SERVICE MANUAL
Electrocardiograph
FX-2111
4R2043
FUKUDA DEIMSHI CO., LTD.
Copyright © 1997 by Fukuda Denshi Co., Ltd.
No part of this document may be copied
or transmitted in any form without
the prior written permission of Fukuda
Denshi Co., Ltd.
Manufactured in Japan
Foreword
A
We list up here the warning marks used in Fukuda operation and
service manuals.
When you sen/ice the FX-2111, read this service manual thoroughly and pay attention especially to instructions bearing the following marks:
Warning Marks
Warning marks used in operation and service manuals and labelled
on the instrument have the following meanings:
Read them carefully to understand the meanings and make sure of
the significance of each particular.
A
This mark is used to indicate the direct hazards
Danger which may lead to the death or serious injury of the
person, may wholly damage the instrument, or may
cause fire hazard, unless the instructions written
there are followed.
A
This mark is used to indicate the indirect potential
Warning hazards which may lead to the death or serious injury
of the person, may wholly damage the instrument
or may cause fire hazard, unless the instructions
written there are followed.
A
This mark is used to indicate the possible hazards
Caution which may lead to a mild or medium injury of the
person, may partially damage the instrument or may
erase data from the computer.
NOTE
"NOTE" is not warning instructions but offers information to prevent the person from doing erroneous
sen/icing.
Other Marks
0
A
Notice to indicate general unspecific prohibited
matters.
Notice to indicate general unspecific caution, warning or hazard.
This service manual describes technical information on FX-2111 to
aid the service engineer in troubleshooting.
The manual is intended to be used by service engineers of Fukuda
representatives and authorized technical staff concerned with medical electronic equipment. Description includes repairing and assembling methods
of each component unit of FX-2111. For parts lists and diagrams, refer to
the Part II of the service manual.
The service manual consists of the following nine chapters:
1
.
General Description
The outline of FX-2111, specifications, controls and indicators are
described.
2
Circuit Description
Circuit configuration and functions are explained.
3
Troubleshooting
.
.
Troubles vs. causes and countermeasures are described.
4 Maintenance
.
Procedures to replace the power fuse, ROM and battery and to perform
self-test are described.
5
.
6
.
7
.
Periodical Inspection
Inspection procedures to prevent troubles and ensure safe and complete operation of the instrument are described.
Circuit Diagrams
Assembly Diagrams
8 Electrical Parts Lists
.
9
.
Structural Diagrams
A Caution
0
. Never remodel Fukuda medical electronic equipment
. The service manual
.
is intended for the service
engineers of Fukuda representatives and the technical staff concerned with medical electronic equipment. Servicing, reassembling, and adjustment shall
be performed by authorized service engineers.
. Prepare proper facilities and tools when servicing
. Be sure to follow the instructions of operation manual
when operating the instrument. For operating precautions, refer to the operation manual.
.
ii
A Servicing Precautions
A Cautions listed below are the instructions of prohibit danger, warn,
ing, and caution described in this service manual. When taking the
procedure bearing the following mark, read the description thoroughly,
then start the task.
A Caution
(page 3-2)
When checking the power supply and related circuits for troubleshooting, take sufficient care to avoid a short circuit.
A Caution
(page 3-3)
When checking power fuses, be sure to turn the power off and disconnect the power plug from the wall outlet beforehand.
A Caution
(page 3-8)
The inserting part of key connector is made of carbon. Avoid frequent
repeated disconnection and connection.
A Caution
(page 4-1)
When replacing power fuses, be sure to turn the power off and disconnect the power plug from the wall outlet beforehand.
A Caution
(page 4-1)
When replacing the ROM, be sure to turn the power off. Also, take care
to install the ROM in correct position.
A Caution
(page 4-2)
When replacing the battery, be sure to turn the power off and disconnect the power plug from the wall outlet beforehand.
iii
A Caution
(page 4-6)
Disassembling/Reassembling Precautions
Be sure to disconnect the power cord and make sure the instrument
is turned off before disassembling or reassembling.
. Do not remove the battery before disconnect any PC board
.
Take care that repeated disconnection of the key panel and sensor
board may result in poor contact.
Use proper tools to loosen screws.
. When reassembling make sure that all screws are securely tightened and all connectors are completely inserted.
,
PC Board Handling Precautions
. PC boards are equipped with highly sensitive components to static
electricity.
. PC boards are highly sensitive electronic devices Put removed PC
boards in a proper protective bag or take appropriate measures to
protect them.
.
Handle PC boards carefully. A shock to them may damage the components.
Never insert a connector to the powered PC board nor remove the
powered PC board.
A Caution
(page 5-2)
If you find a value which exceeds the allowable level, be sure to let
the user avoid using the FX-2111. If the user operates the FX-2111 as
it is, he/she may receive an hazardous accident.
Equipment Classification
The FCP-2155 is classified into the following equipment:
1
Protection against electrical shock
.
Class I
2
.
Type against electrical shock
Applied part: Type CF
3
Degree of protection against harmful water invasion
Other equipment
4
Degree of safety in using under air-inflammable anesthetic gases or
oxygen/nitrous oxide-anesthetic gases
Equipment used under an environment containing no inflammable
anesthetic gases or no inflammable cleaning agent.
.
.
5
.
Running mode
Continuous running mode
iv
CHAPTER
1
General Information
1 Outline of the FX-2111
.
2
.
1-1
Specifications
2 1 Electrocardiograph Section
1-1
1-1
2 2 General
1-2
23
1-2
.
.
.
Environmental Conditions
3 Controls and Indicators
.
1-3
1 Top Panel
3 2 Side Panels, Left and Right
1-4
1-4
33
1-4
3
.
.
.
Bottom Panel
1 Outline of the FX-2111
.
The FX-2111 is the easy-to-use single-channel electrocardiograph
featuring a simple operation panel. The compact yet high-performance
design makes it suitable not only for use in the consultation room but
also for-carrying in a visit to the hospital ward or patient s home and
examination at an emergency site.
'
It has a high-density thermal dot printer incorporated to provide clear
ECG recording. The FX-2111 can operate on either AC line or rechargeable Ni-MH battery.
2
2
.
.
Specifications
1 Electrocardiograph Section
Input circuit:
Floating from the ground
Leads:
Standard and Cabrera 12 leads
Input impedance:
Input circuit current:
Calibration voltage:
20MQ min. (referred to 10Hz)
5x10"8 max.
1mV within ±5%
Common mode rejection: 10mm or less per IEC 62DC06 test
method
Polarization voltage:
±300mV min.
Time constant:
3 2 sec min.
Sensitivities:
1/2, 1 and 2 cm/mV
.
Frequency response:
0 05
AC filter:
50/60Hz, -20dB or lower
Muscle filter:
35 to 45Hz, -3dB (-6dB/oct)
10mm/0.5V, unbalanced, 100kfi min.
Liquid-crystal display, 20 chars, x 2 lines
(character: 5x7 dots)
Thermal dot printer, 8 dots/mm
DC input:
Display:
Recording system:
Paper speeds:
Chart papersRoll paper:
Z-fold paper:
.
to 150Hz (within -3dB)
25 and 50 mm/sec within ±3%
63mm or 50mm wide x 30m long
63mm or 50mm wide x 20m long,
75mm/fold
AID conversion:
12 bits
Sampling rate:
1ms
1-1
2 2 General
.
Safety:
I EC 601-1 Class I
.Type CF
. Internally powered equipment Type
CF (IEC 601-1)
Power requirementsAC operation:
DC operation:
Dimensions:
Weight:
115V AC, 50/60H2; 19VA max.
230V AC, 50/60Hz; 19VA max.
9 6V, 7W max. (rechargeable Ni-MH
battery)
Continuous operation: approx. 120 min
at 20oC (according to IEC 62D Testing
Method)
Charging time: within 3 hours
26 (W) x 18.2(D) x 6.3(H) cm
Approx. 1.7kg (excluding battery)
.
2 3 Environmental Conditions
.
OperatingTemperature:
10 to 40oC
Humidity:
30 to 80%RH (no dew condensation)
Atmospheric pressure: 70 to 106kPa
Transportation & StorageTemperature:
-10 to 40oC
Humidity:
10 to 95%RH (no dew condensation)
Atmospheric pressure: 70 to 106kPa
1-2
3 Controls and Indicators
.
Top Panel
X Liquid-crystal Display
31
-
k
»
@ Paper Magazine
(D Operation Panel
Left Panel
Right Panel
o«
® Potential Equalization
Terminal
0
0
© Power Connector
0
F3
© Main Power Switch
D
@ DC Input Terminal
Q
© Lead Connector
Bottom Panel
@
o
o
{
*
I
i<
"
iii
0
© Fuse Holders
§)
~
~
0
®
1-3
0
© Rechargeable feattery Room
3
1 Top Panel
.
© Display:
Indicates current status such as recording mode, lead, sensitivity, heart rate, or program setting.
© Operation Panel:
ON
OFF
Mode
Turns the FX-2111 on in DC operation.
Turns the FX-2111 off in DC operation.
Pressing this key during AC operation lets the FX-2111 enter the
charge mode.
Select a mode in the following order when pressed during cessation of recording:
|-> Automatic recording -» Manual recording -> Programming -|
Holding this key during automatic recording lets the FX-2111 record
the current lead continuously until detached.
Holding this key during manual recording lets the FX-2111 record
an event mark until detached.
Sensitivity
Lead Select <
Reset
1mV
Start/Stop
© Paper Magazine:
3
Selects a recording sensitivity.
Select a lead for recording. In programming mode, these keys allow
you to select a setting value.
Resets the measuring circuit while held during recording. In
programming mode, this key selects a setting parameter.
Applies a 1mV calibration waveform when pressed during recording. In programming mode, this key selects a setting parameter.
Starts the FX-2111 recording the ECG waveform. Another press stops
it from recording.
Accommodates a chart paper.
2 Side Panels, Left and Right
.
® DC Input:
Inputs external DC signals with a sensitivity of 10mm/0.5V.
© Lead Connector
Connects to the lead cable.
© Power Connector
Connects to the power cable.
© Main Power Switch:
Turns AC power on/off.
@ Potential Equalization
Terminal:
Makes the FX-2111 equipotential to another instrument used in combination with it. To that effect, connect both instruments to a
common grounding conductor using an optional grounding wire.
3 3 Bottom Panel
.
© Battery Room:
Houses the rechargeable Ni-MH battery.
© Fuse Holders:
Have power fuses inserted.
1-4
CHAPTER
2
Circuit Description
1
.
2
.
Introduction
2-1
Isolated Input Circuit
2 1 Buffer Amplifier and RF Driver
2-2
2-2
.
2
.
2
.
2 Lead Network and Lead Selector
2-3
3 Preamplifier and 1mV Generator
2-3
4 R-wave Detector and Overinput Detector
5 Amplifier Control
2 6 Signal Isolator
2-4
2-5
2-5
27
2-6
2
.
2
.
.
.
3
.
Power Isolator
Middle Amplifier and AID Converter
1 Middle Amplifier and DC Input
2-6
2-6
3 2 AID Converter
2-7
2-8
2-8
3
.
.
4 Motor Control
5 Sensor Circuit
.
.
1 Detection of Magazine Open Condition
5 2 Detection of Paper End and Paper Marks
5
.
.
6 CPU Circuit
2-9
2-9
6 2 CPU, ROM and RAM
2-9
2-9
2-9
63
2-9
.
61
.
Reset Circuit
.
.
Gate Array
LCD Control Circuit
8 Thermal Print Head Control Circuit
2-11
2-11
Memory Backup Circuit
10. Power Supply and Charging Circuit
2-12
2-13
7
.
.
9
.
10.1 Introduction
2-13
10.2 Rectifier/Smoothing Unit and ON/OFF Control
2-13
10.3 + 10V and +5Vd Power Generators
10.4 ±5Va Power Generator
10.5 +24V Power Generator
2-14
2-15
2-15
10.6 Charging Circuit
2-16
1 Introduction
.
The FX-2111 is composed of the following circuits:
(1) Main Board PCB-6409
-Isolated input circuit
-Middle amplifier and AID converter circuit
-Motor control circuit
-Sensor circuit
-Reset circuit
-CPU circuit (CPU ROM, RAM, gate array)
,
-LCD control circuit
-Thermal print head control circuit
-Memory backup circuit
-Power supply and charging circuit
(2) Sensor Board PCB-6239
(3) AC Inlet Board PCB-6410
ECG signals input through the lead connector are amplified by the
isolated input circuit and the middle amplifier circuit, then converted from
analog to digital signals by the AID converter circuit. The digitized signals
are digitally filtered, if the filter is set to ON, then sent through the gate
array to the thermal print head control so that they are recorded as ECG
waveform by the thermal print head.
During these processes, the heart rate detected by a hardware
technique and operation status such as filter ON/OFF setting are displayed
on the LCD.
The power supply provides circuits with necessary powers. The
charging circuit, if activated, charges the Ni-MH battery in AC operation
or transfers the power from the Ni-MH battery to the power supply. The
state of battery is indicated on the LCD.
:
PCB-6409
i5V
-
AC Inlet
I0V
"
re
O
Isolated Input Circuit
i
If
3
Power Supply
-24V
AC Power
VDO
+2 5V
.
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DC
Input
/Charging;-;
-
AyiCircuil ;--
Motor
Motor
Control
Thermal
Thermal ]
Print
Head
LCD
*
.
5 M mt
:'
J Gate Array
,
CPU Circuit
Print it
Head
[
Control
1
LCD
Control
PCBSensor
Board
.
Backup
Circuit
6239
Overall Block Diagram
2-1
NiMH
Battery
*
DC
:pcb-64io
Key Panel
2
.
Isolated Input Circuit
The isolated input circuit is composed of the following:
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Buffer amplifier and RF driver
Lead network and lead selector
Preamplifier and 1mV generator
R-wave detector and overinput detector
Amplifier control
Signal isolator
Power isolator
R
-
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5
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5
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-
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5
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5
Preamplifier
"
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Isolator
I
1mV
S
RESET
Amplifier
T
RF Drive <-
"
Control
Signal
Isolator
RF
Overinput/
(Photo
R-Wave Detector
Circuit
Coupler)
I
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Isolator <-
Block Diagram of Isolated Input Circuit
2
.
1 Buffer Amplifier and RF Driver
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.
3
5
Since the buffer amplifier should input signals with high impedance
and output them with low impedance, it is configured as an impedance
conversion circuit using an operational amplifier. The circuit shown above
is individually applied to all leads except for RF (right foot). Also, a limiter
using a dual transistor is mounted for protection against overinput.
The RF driver feeds back the composite signal of limb leads to the
right foot for improved common mode rejection ratio.
2-2
2 2 Lead Network and Lead Selector
.
OK
211
OK
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304
OK
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Lead Select Signals
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A
BCD
STD
0
0
0
0
10
0
0
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Ok
II
0
10
0
III
110
0
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0
200
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10
10
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0
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110
0
0
1
V3
10
0
1
V4
0
10
1
V5
110
1
V6
0
0
11
The lead network is formed with resistors and lead selector, with multi-
plexors IC36, IC38, IC41 and IC4. Input signals to multiplexors are selected
from RA, LA, LF, and CI to C6 according to four signals of A, B, C, and
D then synthesized to produce each ECG lead (see table above).
,
2
3 Preamplifier and 1mV Generator
.
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1 Preamplifier
Signals output from the lead selector (multiplexors) are amplified 8
times by a differential amplifier, then 25 times by a noninverting amplifier,
thereby letting the isolated input circuit amplify the input signals by 200
times in total. Signals output at the first stage are sent to the overinput
23
.
.
detector.
2-3
The 3.5Mfi resistor and 1|jF capacitor set the time constant at 3.5
seconds.
2 3 2 1mV Generator
.
.
The 1mV generator divides the high-precision voltage reference output of 1.235V by a high-precision resistor, thereby applying a 8mV voltage
to the preamplifier when the 1mV application signal is at a low level.
2
.
4 R-wave Detector and Overinput Detector
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.
R-wave Detector
RA and LF signals of lead network are synthesized to II lead. The Rwave detector detects R wave by picking up R-wave component from the
II lead signal through a band-pass filter, then sending it to a comparator.
24
.
2 Overinput Detector
The signal output at the first stage of preamplifier is sent to a com-
.
parator and if the signal exceeds ±360mV, the output of the comparator
becomes inverted.
Signals output from the R-wave detector and overinput detector are
adjusted in the pulse width by the multivibrator IC40 (TC4538), then input
into the photo coupler.
+2 9V
.
+0 31V
.
OV
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1T63
-
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.
-
2 9V
.
TP19
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R-wave Detection Wavelorm
Overinput Detection Waveform
2-4
5 Amplifier Control
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This circuit picks up a reset, 1mV,or lead select signal from the serially
transferred amplifier control signals.
!<-% 1ms
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C L K
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DO
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D6
D5
D4
D3
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Data wfitlen (rom CPU are latched.
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Response
K
time: 32ms + a max.
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2
.
6 Signal Isolator
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The signal isolator modulates input analog ECG signals with FETs
Q31 and Q32 and pulses TRF1 + and TRF1 -, then transfers the modulated
signals through the T1 isolation transformer (1:1). FETs Q22 and Q23
demodulate the signals. A low-pass filter formed with capacitors and
resistors in two stages eliminates noise in the demodulated signals.
Digital signals (AMPCLK, AMPDATA and HR) are transferred using a photo
coupler.
2-5
2 7 Power Isolator
.
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The power is transferred using 10V pulse at 100kHz. At the isolated
side, a 3-terminal regulator supplies ±5V.
3
3
.
.
Middle Amplifier and AID Converter
1 Middle Amplifier and DC Input
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ECG signals demodulated at the isolated signal transmission section
are output to the middle amplifier just after passing through a low-pass
filter formed with capacitors and resistors in two stages. The middle amplifier amplifies the input signals 1.25 times to a total gain of 250 times
and sends them to the AID converter. Signals output from the AID converter
are digitally filtered with a software technique. The isolated input circuit
and the middle amplifier are designed so as to provide a general hardware frequency response of 150Hz (-3dB).
The DC input amplifies input signals 0.5 times, then sends the signals
to the AID converter through a buffer amplifier.
2-6
3 2 AID Converter
.
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The A/D converter is a single slope type. It is composed of a triangular
wave generator, sample & hold circuit, and comparator. The comparator
compares input signals with ±3.2\/ triangle wave generated at every 1ms.
The signals are then converted from the voltage to a pulse width and transferred to the gate array. In the gate array, the pulse width is counted, then
converted into a digital value.
520ps
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A/D CLK
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S/H
(TP35)
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.
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(TP7)
3 2V
-
.
Start ol counting
A/D Conversion Timing
Besides ECG signals, the AID converter digitizes DC input signals,
battery voltage, thermistor signals of thermal print head, and the reference voltage of 2.5V for calibration of A/D conversion.
2-7
4 Motor Control
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The motor to drive the recorder is the DC motor which has a photo
sensor built in for detection of motor speed. The PLL control IC25 compares a signal detected by the photo sensor with the reference frequency
in phase, thereby providing a motor control signal at pin 13 of IC25.
The motor control signal goes to the integrator circuit formed with
R140, R142, and C64 and is made by a proper motor drive voltage of the
PWM control IC24.
25mm/s
(256Hz)
SOmra/s (5L2Hz)
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-+5V
IC25 (pin 14)
SIN
-
-
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+5V
IC25 (pin 3)
CIN
.OV
.+5V
IC25 (pin 13)
. +3 IV
.
P2
\
K
Delayed
Early
+2 2V
.
\
Delayed
/
Delayed
OV
Early
Delayed
5 Sensor Circuit
.
The sensor circuit is provided to check for a magazine opening
condition and paper end as well as detecting paper marks.
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51
.
Detection of Magazine Open Condition
When the paper magazine is open, the microswitch SPVC2-1 is turned
off to send an interrupt signal to the gate array. Magazine opening is detected with the fall signal and magazie closed is detected with the rise signal.
52
.
Detection of Paper End and Paper Marks
A reflection type photo interrupter acknowledges a black paper mark
or paper end status (no paper remaining) if receiving no reflection from the
location of paper. It discriminates between paper end status and paper mark
based on a duration of the low level starting from a fall signal.
6 CPU Circuit
.
The CPU circuit is composed of a reset circuit, CPU, ROM, RAM, gate
array, and backup power circuit.
61
.
Reset Circuit
VOO
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.
.
Using NJM2103, the reset circuit generates a reset pulse as well as
monitoring the battery voltage. It outputs the reset pulse when Vdd falls
to lower than 4.27V or when it receives a signal from WDT.
As for the battery voltage, the reset circuit monitors the power voltage
divided by resistor and when the voltage becomes lower than 7.5V referred
to the battery terminal, it outputs a pulse to the LOWS terminal to turn
the power off. To protect the output pulse against power fluctuation noise,
a filter formed with a capacitor and resistor in one stage and a Schmidt
trigger inverter are provided.
6 2 CPU, ROM and RAM
.
The CPU is HD63B09E. It controls the overall circuit of the instrument
through the gate array. The ROM is 64K-byte AM27C512-150DC and the
RAM is 8K-byte SRM2264LM12. By changing the jumper connection, the
ROM can be replaced with a 128K-byte ROM and the RAM, with a 32Kbyte RAM (with a data holding current of lower than 2\iA).
6
3 Gate Array
.
The gate array is FD88007-AC with a clock frequency of 16MHz. Its
control signals are as follows:
2-9
631
.
.
2MHz E and Q Clocks for CPU
'
-5 00 n s-->
<
E
500ns
V,
$->, 125ns
Q
63
.
2 Interrupt Signals
.
There are three types of interrupt signals-NMI, FIRQ and IRQ. All
these signals, active at low level, are output to the CPU.
-NMI
Output at every 1ms.
-FIRQ
Output at every 10ms.
-IRQ
Output when any one of MAGAZIN, MARK, HR, LOWB, CHG
IRQ and AC/DC signals is input.
,
!<
S>
Ims
NM I
-
j* 500jis
1 0 0 Hz
1 Oras
FIRQ
. CLEAR
MARK
RUN
a
PAPER
END
a = 390ms (9.75mm) with a paper speed of 25mm/sec
190ms (9.75mm) with a paper speed of 50mm/sec
NOTE: ACDC, CHG IRQ, and MAGAZIN DOWN signals are detected at
their rise and others are at their fall.
63
.
.
3 Watchdog Timer (WDT)
.
10ms
,
'
<
=»
1 0 0Hz
WDT
CLEAR
,
70ras .
WDT
a = Response time of IC
2-10
a i
634
.
.
Chip Select Signals
Chip select signals are all active at low level.
WE: Write enable signal
RD: Read enable signal
E
Q
ROM ]
RAM [
KEY J
1
1
|
1
WE I
RD J
'
1
'
'
NOTE: LCD signal differs from the above since the memory is ready. (See
LCD control circuit.)
7 LCD Control Circuit
.
Since the LCD (NDM202A00) has a controller built in, it is interfaced directly with the CPU. However, E and Q clocks make the bus timing as shown below.
E
Q
LCD
Data
Bus
Address
Bus
CM
ZX
$3040 ~ $30<tF
>
X
8 Thermal Print Head Control Circuit
.
A waveform is traced at every 1ms and alphanumerics are at every
6ms with a paper speed of 25mm/sec or every 3ms with a paper speed
of 50mm/sec. The RAM for the thermal print head control uses 4K-byte
for alphanumeric data. This circuit controls dot heating temperatures based
on previously printed data to provide a proper printing condition.
When the paper is not driven or when the magazine is open or there
remains no paper in the magazine, the circuit generates TOFF signal to
shut off power supply to the thermal print head at the FET Q24, thereby
protecting the thermal print head.
There are four control signals of CLOCK, DATAIN, LATCH, and STROBE.
The STROBE signal is varied in pulse width according to thermal print
head temperatures.
2-11
1ms
LATCH
e-
I
8,3
STROBE
us
-
!<
-
960vs
(Max)
895,is
CLOCK
(SOOKHz)
9
<
.
5us
S
DATA
2v s
CLOCK
.
1
.
Sks
1
DATA
9
.
Memory Backup Circuit
The battery-backed RAM SRM2264LM12 is installed to keep program
contents when the FX-2111 is turned off. The RAM should feature a data
holding current of lower than 2nA.
J
2 k otci 1 . o>
O . I
T ."
5 "
9
When the FX-2111 is turned on, Vdd is supplied to the circuit and
turns Q6 and Q7 on to send +5\/ Vdd to the RAM.
When the FX-2111 is turned off, Q6 and Q7 are turned off but the back-
up lithium battery supplies +3V to the RAM to let it keep the stored data.
2-12
10. Power Supply and Charging Circuit
10.1
Introduction
The power supply transforms the AC power by the transformer or
receives DC power from the battery, then regulates the power to stabilized
voltages required by respective circuits.
The FX-2111 is equipped with a charging circuit to permit the user
to charge the Ni-MH battery.
AC Power
Transformer
Rectifier
5
-
+ 1 0 VN
Regulated
Power
Supplies
+ I 0 V
ON/OFF
Control
DC Power
+ 5 VD
Battery
I
!
± 5 VA
Charging
+ 2 4 V
Circuit
Block Diagram
10.2 Rectifier/Smoothing Unit and ON/OFF Control
10.2.1 AC Operation
The AC power voltage is transformed by the transformer, then rectified
by D1 to D4 and smoothed by C136. D1 to D4 are Schottky diodes with
low Vpand form a bridge circuit. This rectifier circuit suppresses voltage
decrease and features less heat generation.
10.2.2 ON/OFF Control
In battery operation, a press of the ON key switches FET 04 on and
electrifies D7, thereby making the base of 05 driven. If the operator
detaches the finger from the ON key, 04 is kept on and the power is
supplied to the FX-2111.
The battery voltage is detected via D6. If the voltage between battery
terminals is lower than 7.5V or so, the gate array generates POWER OFF
signal to turn 03 on and cancel the bias voltage of 05, thereby switching
04 off. As the result, the FX-2111 receives no power supply and is turned off.
Similarly, a press of the OFF key cancels the bias voltage of 05, thereby
turning the FX-2111 off. In AC operation, 01 is on; therefore the base of
05 cannot be driven and 04 cannot be kept on, thereby making battery
operation impossible.
2-13
VDO
AC DETECT
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10.3
*
-
+10V and +5Vd Power Generators
10.3.1 10V Power Generator
The dropper type 4-terminal regulator IC22 is used to regulate unstabilized IOVnU) stabilized lOV. R118 and R119 are to set the output voltage.
The 10V power is supplied to the motor and the 5Vd power generator.
If the battery voltage becomes lower than 10V in battery operation,
IC25 drops the voltage to several ten millivolts.
10.3.2 5Vd Power Generator
C7 is a drop type low-loss 3-terminal regulator. It produces regulated
5V power from 10V. IC7 can operate if an input-output voltage difference
becomes up to 0.5V and thus it can output the stable 5V power if the input
voltage fluctuates due to lowered battery voltage.
The 5V power thus produced is supplied to the CPU and other digital
circuits.
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IC7
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10.4
± 5Va Power Generator
Using the unregulated 10Vn power from the AC power supply or the
battery, the 3-terminal regulator ICQ produces +5V. IC10 is a CMOS inverting
type switching regulator, in which the output voltage is fixed and which
inverts the input +5V and outputs -5V. A capacitor at the output is an
organic semiconductor capacitor which features superior characteristics
at low temperatures and least leakage current.
±5V powers thus produced are supplied to analog circuits such as
operational amplifier.
ICS
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+24V Power Generator
Using the unregulated 10Vn power from the AC power supply or the
battery, the +24V power generator, a boosting type DC-DC converter,
produces 24V power for driving the thermal print head and charging the
battery.
IC6 is a PWM-controlled switching regulator. R22 and C18 determine
the oscillation frequency. The PWM control is performed at approximately
170kHz to drive Q9 at a high speed. While Q9 is on, the current flows to
LI which in turn stores the energy. When Q9 is turned off, the stored energy
becomes a counter-electromotive force and is stored in C137 via D13. By
repeating a series of these operations, the +24V power generator can
produce an output voltage larger than the input voltage. R41 and R42 set
the output voltage at 24V. R24 checks for an overcurrent and a characteristic is provided to gradually lower the output voltage when the load
current increases to over 0.4A.
The 24V power thus boosted is used to drive the thermal print head.
When the thermal print head is printing, a signal from pin 21 of the gate
array drives the base of Q15 to switch FET Q24 on so that the -I-24V is
supplied to the thermal print head. When the thermal print head is not
printing, Q15 and Q24 are off and the thermal print head is not supplied
with power.
Pin 16 of IC6 outputs 2.5V, which is used by the AID converter and
the thermistor temperature detector of thermal print head.
I
-
11
;;
j1UY
i 111 * 51 i
= LIL
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10.6 Charging Circuit
The charging circuit is equipped with the quick charging IC18 (bq2003),
which performs constant current control as a frequency modulation controller for switching regulation of the charging current and monitors the
battery temperature and voltage and the charging time to ensure proper
charging. It also checks whether or not the Ni-MH battery is connected
and enables charging only when the battery is connected.
In AC operation, the circuit is supplementarily charging the battery
even if the FX-2111 is not placed in charging mode.
10.6.1 Starting the Charging Circuit
When the OFF key is pressed in AC operation, Q11 is turned on to
supply +5V for operation of the IC. Since the base of Q12 is driven by
turning Q11 on, Q11 is kept on. When +5V is supplied to IC18, the charging circuit automatically starts operating.
10.6.2 Charging Temperature and Voltage Monitoring/Control
Charging is limited by battery temperature and voltage so that it is
made in a preset range.
To monitor the battery temperature, a thermistor (with negative temperature coefficient) is installed in the battery pack. The thermistor outputs
a voltage signal to pin 6 (TS) of IC18 and charging is enabled if the voltage
is within the preset limits in voltage converted from battery temperature.
The sensitivity of a battery temperature rising ratio (AT/At) is adjusted by
resistances of the thermistor and R59, R61, and R62 on the charging circuit.
The battery voltage is divided to a voltage per cell by R58 and R60
which are connected between battery terminals, then sent to pin 7 (BAT)
of IC18. Charging is enabled if the voltage is within the preset limits in
voltage per cell.
Divided +5V powers of R84 and R85 are used to determine the maximum cell voltage (MCV) of the battery and the maximum voltage (TCO)
for the battery temperature to stop charging, respectively. They are output
to pin 10 (TCO) and pin 11 (MCU) of IC18.
Preset battery temperature limits and cell voltage limits are as follows:
. Battery temperature limits
Minimum charge enable temperature limit LTF: Approx. -50C
(voltage level 2.0V)
Maximum charge enable temperature limit HTF: Approx. 60oC
(voltage level 1.13V)
High temperature to stop charging TCO: Approx. 650C
(voltage level 1.01V)
. Battery cell voltage limits to enable charging
Minimum: Approx. 1.0V
Maximum: Approx. 1.78V
That is, when the charging circuit is turned on, it starts charging the
battery if the battery temperatre is within a range of 50C to 60oC and
the cell voltage is within a range of 1.0V to 1.78V. If either one of the above
2-16
conditions is not satisfied, it does not start charging the battery but is
placed in a standby status until both conditions are satisfied.
Once the charging circuit starts charging the battery, the charge complete system described later will be effective. However, if the maximum
cell voltage of 1.78V is exceeded before the start of charging, the charging
circuit judges the battery abnormal and does not start charging.
10.6.3 Charge Current Control
The power required for charging is supplied from the 24V power
generator. The charging current to the battery is detected by the resistor
R18 then sent to pin 9 (SNS) of IC18. The output of pin 14 (MOD) of IC18
is switched based on the voltage value of R18 to switch Q17 on/off, thereby
making the current constant. The charging current is set at approximately
0 45C (480mA).
.
Q16, D22, and Q10 form a MOS FET driver and level shifter circuit to
heighten the switching frequency.
10.6.4 Charge Complete System
When the battery temperature and cell voltage are within the respective ranges, the charging circuit continues to charge the battery until one
of the following five conditions is satisfied:
. - AV detected
.
.
.
.
- AllAt (temperature rising ratio) detected
Maximum temperature of 650C to stop charging TCO reached
Maximum charging time of 3 hours reached
Maximum cell voltage MCV of 1 78V reached
.
Usually, the charging circuit stops charging by detecting -AV.
However, if charging is started at high ambient temperatures, the charging
circuit may detect the maximum temperature (TCO) to stop charging. Also,
as a safety measure against no - AV detection, the maximum charging
time of three hours is set by timer and TM1 and TM2 signals at pins 4
and 5 of IC18, respectively, stop the charging circuit from charging if the
time is reached.
......
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10.6.5 Other Functions
In AC operation, supplemental charging is made by R66. In AC operation, Q14 is on and the base of Q13 is driven to supply R66 with the 24V
power. The current of which the value is determined based on a voltage
difference at R66 flows for supplemental charging. However, if the battery
is not connected, Q8 is turned on and Q14 is kept on, thereby disabling
supplemental charging and at the same time cancelling the bias voltage
of Q12. Thus, the 5V power to operate the charging circuit is not held and
charging is impossible.
The charging circuit outputs CHG IRQ and CHG STATUS signals. When
the circuit is supplied with 5V, the CHG IRQ signal becomes high level
to indicate the instrument is placed in charge mode. The CHG STATUS
signal is output from pin 13 (CHG) of IC18 to indicate the current charging
status. If the battery is not connected, the CHG IRQ signal cannot become
higher than 0.7V since D15 is electrified. Thus, the instrument is not placed
in charge mode.
The CHG signal is output in the following manner:
CHG STATUS Output Level
Low
High
Continuous
Abnormal power voltage
Continuous (rise)
Start of charging
1 375s ± 0.225s
Standby
.
125ms ±20ms
Continuous
Charging
125ms ±20ms
Charged
125ms ±20ms
CHG IRQ Signal
CHG swilch ON
Cha/ping Mode
2 0s
.
'
*
*
CHG STATUS Signal
in ordinary charging
\
Start of Charging Mode
Charolng In Progress
Churging ConipleloiJ
CHG STATUS Signal
with some pending of charging
2 0s
.
Rending
CHG STATUS Signal
with abnormal battery voltage
Charging in Progress
No charging made
CANT CHARGE" message appears aller 5 seconds Irom the start
"
.
2-18
CHAPTER
3
Troubleshooting
1 Introduction
.
1 Internal Power Supplies
1 2 Faulty Power Supplies vs. Troubles
Troubleshooting
2 1 All Specified Secondary Power Supplies Are Not Available
in AC Operation
2 2 All Specified Secondary Power Supplies Are Not Available
in Ni MH Battery Operation
2 3 +24V Is Not Output
2 4 + 10V Is Not Output
2 5 Vdd Is Not Output
2 6 Unisolated ±5Va Are Not Output
2 7 Isolated ±5V Are Not Output
2 8 Troubles Related to Charging
2 8 1 Charging Mode or "CHARGING" Status Is Not Effected.
2 8 2 Virtually No Charging Is Made Despite "CHARGING
COMPLETE" on Display
2 9 LCD Operation Is Abnormal
2 10 No Key Operation Is Possible
2 11 Paper Is Not Driven or Abnormally Driven
2 12 No Mark Detection on Z-fold Paper Is Available
2 13 No Paper End Detection Is Available Or "PAPER END"
Alarm Is Constantly Displayed
2 14 Program Contents Change
2 15 Buzzer Does Not Operate
2 16 No Waveform Recording Nor Alphanumeric Printout
1
.
.
2
.
3-1
3-1
3-2
3-3
.
3-3
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
3-3
3-4
3-4
3-4
3-5
3-5
3-6
3-6
3-7
3-7
3-8
3-8
3-9
.
.
.
3-9
3-9
3-9
.
17
18
2 19
2 20
2
.
2
.
.
.
Is Available
3-10
No DC Input Waveform Recording Is Available
Any Waveform of All 12 Leads Is Recorded As Baseline
Waveform of Some Specific Lead Is Recorded As Baseline...
Checking AID Converter
3-10
3-10
3-11
3-11
1 Introduction
.
11
.
Internal Power Supplies
First, understand internal power supplies and their functions.
10Vn
The IOVn power is output from the secondary side of transformer.
Since it is not regulated, it fluctuates depending on the load status
and AC input voltage. It is transformed to various regulated voltages
to be supplied to respective circuits.
+10V
Inputting 10Vn, the low-loss 4-terminal regulator outputs regulated 10V. However, if the input is lower than 10V, the output
voltage will be lower by several ten millivolts than 10V.
This voltage is supplied to the motor and the regulator which
produces -i-5Vd.
+ 5Yp
Inputting + 10V, the dropper type low-loss regulator outputs
regulated -(-5Vd.
This voltage is used as the power supply for digital circuits,
such as CPU, of the unisolated section.
+ 24V
Inputting 10Vn, the switching regulator outputs regulated
+24V. A limiter is applied at approximately 0.4A referred to 10V,
thereby lowering the output voltage.
The +24V voltage is supplied to the thermal print head. In the
case of FX-2111N, it is also used as a charging power supply.
+5Va (unisolated)
Inputting IOVn, the dropper type 3-terminal regulator outputs
regulated -i-5Va.
5Va (unisolated)
-
Inputting +5Va, the inverting type switching regulator
produces -5Va.
±5Va are used as analog power supplies for DC input, ECG
circuit and AID converter.
± 5Vf (isolated)
Receiving 10Vn through the isolation transformer which
isolates the voltage from other circuits, the 3-terminal regulator
outputs regulated ±5Vf.
The ±5Vf are used as power supplies for digital circuits of the
isolated section.
± 5Vb (isolated)
±5Vb are produced from ±5Vf through diodes. They are
used as power supplies for analog circuits (input amplifiers)
of the isolated section.
3-1
2 Faulty Power Supplies vs. Troubles
1
.
1 21
If 10Vn is not output...
The FX-2111 does not operate at all since 5V, 24V and all other powers
are not produced.
.
.
122
If 10V only is not output...
The dropper type low-loss regulator cannot produce +5Vd, thereby disabling the CPU, etc. to operate. The FX-2111 does not apparently operate
.
.
at all while 24V and others are available.
3 If +5Vd only is not output...
The CPU and other components are not supplied with power. The
FX-2111 does not apparently operate at all while powers other than +5Vd
12
.
.
are available.
12
.
4 If +24V only is not output...
The LCD and keys operate normally but waveform recording and al-
.
phanumeric printout are not available at all.
12
.
5 If unisolated ±5Va are not output...
.
The AID converter and comparator do not operate normally, thereby
making ECG waveform or DC input waveform a baseline with alphanumerics
printed out normally.
6 If isolated ±5Vf and ±5Vb are not output...
All 12 leads are displayed and recorded as baselines with alphanumerics
printed out normally.
12
.
.
A Caution
When checking the power supply and related circuits for troubleshooting, take sufficient care to avoid a short circuit.
3-2
2
2
Troubleshooting
.
1 All Specified Secondary Power Supplies Are Not
Available in AC Operation
.
(1) Check the FX-2111 is securely connected to the wall outlet using the
specified power cord.
(2) Check the AC inlet has two specified power fuses inserted and the fuses
are not blown out.
(3) Check AC voltage at the secondary side of power transformer. Disconnect the output jack, which comes from the transformer, from P1 connector and measure the voltage between pins 1 and 3 of the output
jack. The AC voltage should be as follows:
9 9V to 12.5V for 115V version
.
8 5V to 12.5V for 230V version
.
(4) Check supply voltages on PCB-6236.
1) Check voltages between the anode side of D2 and D3 and the cathode
side of D1 and D4. They should be in a range of 10 to 16V DC.
If DC power output is not available on the board while the transformer
output is found normal, the contact of PI connector may be faulty
or diodes D1 to D4 may be damaged.
2) Also verify that the voltage between the cathode side (TP22) of D5
and GND (TP21) is in a range of 10 to 16V DC.
If the voltage between the cathode side of D5 and GND is not available, the fuse F1 on the board may be blown out or D5 may be
damaged.
A Caution
When checking power fuses, be sure to turn the power off and disconnect the power plug from the wall outlet beforehand.
2
2 All Specified Secondary Power Voltages Are Not
Available in Ni-MH Battery Operation
.
(1) Open the rear cover of instrument and check the presence of battery.
Then check that the battery is securely connected to the FX-2111 via
the connector.
(2) Check supply voltages on PCB-6236.
1) Verify that the battery voltage is available between pins 1 and 4 of
P10 and between the plus side (TP25) and GND (TP21).
If the battery voltage is not available there, the contact of P10 may
be faulty or the fuse F2 may be blown out.
2) Press the ON key and verify that the battery voltage is available
between the drain of Q4 (anode side of D6) and GND.
If the battery voltage is not available there, the holding circuit around
Q4, D7 and Q5 may be faulty or the connection of key panel may
be inferior.
3) Verify that the battery voltage is available between the cathode side
(TP22) of D6 and GND.
If the battery voltage is not available there, D6 may be faulty.
3-3
2
.
3 +24V Is Not Output
(1) Check the presence of IOVn (8V to 16V). Then verify that the voltage
is aupplied to pins 10 and 13 of IC6.
(2) Check operations of components around IC6.
1) Using the oscilloscope, verify that pin 4 of IC6 outputs a triangular
wave at approximately 170kHz.
If not, IC6 may be faulty.
2) Using the oscilloscope, verify that the gate of Q9 outputs a rectangular wave at approximately 170kHz.
If not, IC6 may be faulty.
3) Using the oscilloscope, verify that the waveform at the drain of Q9
is switched at approximately 170kHz.
If not, Q9 or D13 may be faulty.
4) If +24V is supplied to the thermal print head only, conduct the
following:
Press the START/STOP key to place the instrument in recording condition. Then verify that -I-24V is available at the drain of Q24 and
pins 13, 14 and 15 of P5 connector.
If the + 24V is not available there, consider Q24 or Q15 may be faulty
or check whether or not signals are sent from the gate array (pin 21).
Signal level of Q15's base input: High-24V ON
Low- 24V OFF
If +24V is available there, check the cable of thermal print head.
2
4 + 10V Is Not Output
.
(1) Check the presence of IOVn at pin 1 of IC22. To make 10V output available, the input 10Vn should be higher than 10V.
If the input voltage is present but the output is not available, setting
resistors R119 and R118 or IC22 may be faulty.
2
.
5 Vdd Is Not Output
(1) Verify that 10V input is available at pin 1 of IC7. If the IOVn output from
the secondary side of power transformer is lower than 10V, however,
the 10V input at pin 1 of IC7 is lower by several ten millivolts than the
specified -I-10V.
If the input voltage is present but the output is not available, IC7 may
be faulty.
3-4
2
6 Unisolated ±5Va Are Not Output
.
(1) Verify that the 10Vn input is available at pin 3 of ICQ.
If not, both ±5Va should not be output. Conduct the steps described
in 2.1 and 2.2.
(2) Verify that +5Va is output at pin 1 of ICQ and pins 3 and 5 of IC10.
If not, ICQ may be faulty.
(3) Verify that -5Va is output at pin 4 of IC10 (TP2Q, TP53).
If not, IC10, L2 or D14 may be faulty.
2
.
7 Isolated ± 5V Are Not Output
(1) Verify that +10Vn (8V to 16V) is supplied to pins 6 and 7 of 12.
If not, check whether or not 10Vn is output from the secondary side of
power transformer.
(2) Check the circuit around 12.
1) Verify that pin 11 (TP49) of IC20 inputs a 200kHz rectangular wave as
clock signal.
If not, IC16 or IC1Q on the oscillator circuit may be faulty.
2) Verify that pins 8 and 9 of IC20 output rectangular waves at 100kHz
in reversed phases.
If not, IC20 may be faulty.
3) Verify that pin 3 (TP60) of D29 and pin pin 3 (TP61) of D30, each at
the isolated side, output rectangular waves at 100kHz.
If not, check Q20, Q21 and 12, which may be faulty.
4) Verify that rectified and smoothed voltages in plus and minus directions are input into pin 3 of IC33 and pin 2 of IC34, respectively.
If not, D29 or D30 may be faulty.
If all the abovementioned inputs and outputs are found normal but
isolated ±5V are not output, IC33 or IC34 may be faulty.
3-5
2
8 Troubles Related to Charging
.
28
.
1 Charging Mode or "CHARGING" Status Is Not Effected
.
If charging mode is not effected, +5V (CHG IRQ) may not be output
at pin 9 of IC18 or +5V may not be supplied to the charging circuit. Conduct
steps (1) and (2)-1) below.
If charging mode is effected but "CHARGING" status is not initiated,
+ 5V may be available on the charging circuit and at pin 9 (CHG IRQ) of
IC18 but either the battery voltage or temperature may not satisfy the charging
condition. Also, if +5V is not correctly output, the voltage may vary con-
siderably and may be beyond the specified range. So conduct steps (1), (2)-1)
and (2)-2) below.
(1) Open the rear cover of instrument and check the presence of battery.
Then check the battery is securely connected to the instrument via the
connector and the battery cable is not disconnected.
(2) Check the circuit around IC18.
1) Press the OFF key in AC operation and verify that pin 16 (TP44) of
IC18 outputs + 5V. Also verify that pin 9 (CHG IRQ) of gate array IC8
outputs +5\/.
If not, check the operation of + 5V power supply.
. If +5V is output only when the OFF key is pressed Q12 may be
faulty.
. If +5V is not output at all even if the OFF key is pressed Q11, Q12,
or D8 may be faulty.
. If only +5V for CHG IRQ is not output check whether or not the
collector (TP48) of Q8 is at low level. If it is low, Q8 may be faulty.
2) Verify that voltages between pin 6 (TS) and pin 9 (SNS) and between
pin 7 (BAT) and pin 9 (SNS) of IC18 are in the specified ranges as
,
,
,
follows:
Pin 6 (TP42) 1.01V to 2.0V
Pin 7 (TP2)
1.0V to 1.78V
. If the voltage at pin 7 (BAT) is beyond the specified range check
the terminal voltage of battery. If the battery voltage is not higher
than 8.0V or so, the FX-2111 is not placed in "CHARGING" status.
Owing to this, supplemental charging is made in AC operation. Check
whether or not 24V output is available at the collector of Q13 in AC
operation.
. If the voltage at pin 6 (TS) is beyond the specified range remove
the battery and check the thermistor in the battery. Measure the
resistance between pin 2 (blue) and pin 4 (black) of the collector.
The resistance should be in a range of 3kft to 30kl2 (lOkft at 250C).
Ambient temperatures should be proper.
,
,
3-6
28
.
2 Virtually No Charging Is Made Despite "CHARGING
COMPLETE" on Display
.
(1) Check the circuit around IC18.
1) Verify that the source side of Q17 is supplied with +24V.
If not, conduct the steps described in "8.3 +24V Is Not Output:'
2) Verify that pin 14 (MOD) of IC18 outputs a rectangular wave at
approximately 140kHz; the drain (TP52) of Q17 outputs a rectangular
wave at approximately 140kHz; and pin 9 (SNS) of IC18 outputs a
triangular wave at approximately 140kHz.
If not, check the following:
. R18 and R82 including their mounting condition
,
. 017 Q10, 016, and D22
,
. If above components are found normal IC18 may be faulty.
NOTE: Charging current is detected as a voltage value at pin 9 (SNS),
thereby switching the output of pin 14 (MOD).
,
(2) Check the number of charge-discharge times and the number of operating times after charging.
Usually, the number of charge-discarge times is 200 max, though it may
decrease depending on the operating environment.
The larger the number of operating times after charging, the shorter
the service life of battery becomes.
Thus, if the charging circuit is found normal but virtually no charging
is made despite "CHARGING COMPLETE" on display, the battery may
exhaust the service life.
2
.
9 LCD Operation Is Abnormal
(1) Check sure connection between the P2 connector on the main board
and the connector of LCD.
Check the connector terminals for any possible inferior soldering.
(2) Verify the following voltages on the P2 connector:
GND level at pin 1 (Vss)
+5V at pin 2 (Vdd)
+ 0.238V at pin 3 (Vee)
(3) Check the continuity of the following signal lines referring to "4.2 LCD
Control Circuit!'
Rs
signal
R/W
E signal
Signals of DB0 to DB7
NOTE: The LCD module used for FX-2111 has a built-in control driver and
is directly accessed by the CPU, with MEMORY READY put.
3-7
2 10
.
No Key Operation Is Possible
(1) Verify sure connection between the P7 connector on the main board
and the flexible cable of key panel.
Check the P7 connector for any possible inferior soldering.
Check the flexible cable of key panel for any possible disconnection
and wear of the carbon part.
(2) Verify that key signal lines except for ON and OFF keys are normally
pulled up by checking TP120 to 125 and TP128.
(3) Check the voltage at pin 20 (power supply) of IC15.
Check signals at pin 1 (KEY) and pin 19 (AO) of IC15. Signal at pin 1
should be at low level at every one millisecond.
Verify that pins 2 to 9 and 11 to 18 of IC15 are at low level when a key
is pressed.
NOTE: If only some specific key is not effective, the key may have a poor
contact.
A Caution
The inserting part of key connector is made of carbon. Avoid frequent
repeated disconnection and connection.
2
11 Paper Is Not Driven or Abnormally Driven
.
(1>/erify sure connection between the P4 connector on the main board
and the motor cable.
Check the P4 connector for any possible inferior soldering.
Check the motor cable for any possible disconnection.
(2Verify that pins 3 and 5 (TP103) of P4 connector are supplied with +5V.
(3yerify that the following signal is available at pin 1 (TP101) of P4 connector.
!<
5|19. 5;s
;<
5*L9. 5,s
+ 10V
JUULJUU
Paper speed 25mm/sec
Paper speed 50mm/sec
Check the signal at pin 14 (TP59) of IC25. (Refer to "2.4 Motor Control:")
It should be 256Hz with a paper speed of 25mm/sec and 512Hz with
a paper speed of 50mm/sec.
Verify that the signal at pin 2 (JP5Q) of IC12 is at high level when the
paper is driven.
3-8
2
12 No Mark Detection on Z-fold Paper Is Available
.
(1) Verify that "RECORDING MODE" is set to "MARK" in the program.
(2) Check the mark sensor for any possible dirt deposit and inferior mounting condition.
(3) Verify sure connection between the P6 connector on the main board
and the flexible sensor cable.
Check the P6 connector for any possible inferior soldering.
Check the flexible sensor cable for any possible disconnection.
NOTE: The mark sensor is the one and only part in the FX-2111, which is
adjusted by a variable resistor. Before conducting the steps
described above, therefore, check the variable resistor for any
possible peeling-off of the paint lock and slippage.
2 13
.
No Paper End Detection Is Available Or "PAPER
END" Alarm Is Constantly Displayed
(1) Check the mark sensor for any possible dirt deposit and inferior mounting condition.
Verify that the magazine sensor switch is positioned in place and
pressed when the magazine is closed.
(2) Verify sure connection between the P6 connector on the main board
and the flexible sensor cable.
Check the P6 connector for any possible inferior soldering.
Check the flexible sensor cable for any possible disconnection.
NOTE: The mark sensor is the one and only part in the FX-2111, which is
adjusted by a variable resistor. Before conducting the steps
described above, therefore, check the variable resistor for any
possible peeling-off of the paint lock and slippage.
2 14
.
Program Contents Change
(1) Verify that the lithium battery voltage is +2.5V.
Check the lithium battery for any possible inferior soldering.
(2) Verify that when the FX-2111 is turned off, pin 28 of IC2 is supplied with
+3V from the lithium battery to back up the RAM.
NOTE: Program contents are stored in the RAM IC2 and backed by the
lithium battery when the FX-2111 is turned off.
If program contents change despite sufficient lithium battery
voltage, refer to 2 9 Memory Backup Circuit:'
"
.
2 15
.
Buzzer Does Not Operate
(1) Verify that pin 15 (or R73) of the gate array outputs a rectangular wave
at 1kHz under the condition where the buzzer should sound.
If the wave is normally output, R73, soldering of the buzzer or the buzzer
itself may be faulty.
In the case where no QRS-synchronized sound is generated, make sure
that "QRS BEEP" is set to "ON" in the program.
3-9
2 16
.
No Waveform Recording Nor Alphanumeric
Printout Is Available
(1) Verify sure connection between the P5 connector on the main board
and the thermal print head cable.
Verify sure connection between the thermal print head and the cable.
Check the P5 connector for any possible inferior soldering.
(2) Verify that +24V is available between pins 13 and 15 (TP112) of the P5
connector under the condition where a waveform should be recorded.
Verify that pin 9 of P5 connector is supplied with +5V.
(3) Verify that the TOFF signal at pin 21 of gate array or the base of Q15
is at high level under the condition where recording should be made.
Verify that signals of LATCH (pin 2 of P5 or TP107), CLOCK (pin 3 of
P5 or TP108), STROBE (pins 5, 6,and 7 of P5 or TP109) and DATA IN
(pin 1 of p5 or TP106) are available at the timings as described "2.8
Thermal Print Head Control Circuit;'
(4) To make sure of the correct operation of the RAM for thermal print head:
. Verify that pin 28 of IC5 is supplied with +5V
. Verify that JP3 is short-circuited by soldering
.
.
NOTE: If electrical signals are normal mechanical failure may make waveform recording and alphanumeric printout impossible. So check
the spring mounting condition and other mechanical status around
the thermal print head.
,
2 17
.
No DC Input Waveform Recording Is Available
(1) Make sure that "DC RECORDING" is set to "ON" in the program.
(2) Check the P3 connector on the main board for any possible inferior
soldering.
(3) Verify that pin 4 of IC21 is supplied with +5V and pin 11, with -5V.
If IC21 is not correctly supplied with power, the FX-2111 should not be
able to record ECG waveform too.
(4) Check the AID converter referring to "2.20 Checking AID Converter"
If the AID converter is faulty, the FX-2111 should not be able to record
ECG waveform too.
2 18
.
Any Waveform of All 12 Leads Is Recorded As Baseline
(1) Check isolated ±5V and unisolated ±5V referring to 2.6 and 2.7.
Verify that power supply pins of IC12,13,17, 21, 31 and 35-45 (operational amplifier, multiplexor, etc.) are supplied with power.
(2) To check the reset circuit and the control signal, verify that pin 13 of
IC44 is not fixed to high level.
3-10
2
.
19 Waveform of Some Specific Lead Is Recorded As
Baseline
(1) Check the lead cable for any possible internal disconnection and inferior
hookup.
(2) In relation to the lead which results in a baseline, check the buffer IC,
the resistance of resistance network, power supplies to lead selector
ICs (IC36,38,41 and 45) and their connection status such as soldering.
2
20 Checking AID Converter
.
Check the AID converter if the trouble occurs despite the normal condition detected by taking steps described in Section 2.16, 2.17 or 2.18.
(1) Verify that pin 7 (TP7) of IC13 outputs a triangular wave with an amplitude of ±3.2V and a pulse width of 520ns. If the triangular wave is
normally output, proceed to step (4) below.
(2) Verify that power supply pins of IC17,21 and 13 are supplied with power.
Verify that the reference voltage of +2.5V is supplied.
If not, check the power supply.
(3) Verify that a rectangular wave ADCLK (L: 520(is, H: 480|js) of 1ms cycle
is output at 1ms cycles from the collector terminal of Q1.
(4) Verify that the low level S/H signal with a pulse width of 96ns is output
at every 1ms from pin 6 of IC17, referring to 2 3 AID Converter Circuit!'
"
.
(5) Check the output of comparator as follows.
*
Verify that pin 1 (ECG signal) of IC13, pin 8 (DC input signal) or pin 14
(battery/thermistor temperature) outputs a pulse which changes in the
pulse width corresponding to the changing input signal.
Verify that pins 4, 6 and 8 of IC12 output the abovementioned pulse
signal of which the amplitude is limited to a range of 0 to 5V.
3-11
CHAPTER
4
Maintenance
1
.
2
.
3
.
4
.
Replacing Power Fuses
Replacing ROM
Replacing Rechargeable Battery
Operation Check by Self-testing
4 1 Self-testing Procedures
4 2 Examples of Test Results
4 3 System Errors
Disassembling/Reassembling the FX-2111
5 1 Disassembling Procedure
.
.
.
5
.
.
4-1
4-1
4-2
4-3
4-3
4-4
4-5
4-6
4-7
1
.
Replacing Power Fuses
Power fuses are hardly blown out. But if they are blown out due to
some reason, turn the FX-2111 off and disconnect the power cord from
the wall outlet. Then pull fuse holders off the bottom panel as shown
below. Insert spare fuses and put fuse holders in original positions.
A Caution
When replacing power fuses, be sure to turn the power off and disconnect the power plug from the wall outlet beforehand.
2
.
Replacing ROM
(1) Remove the upper casing.
(2) The ROM will be accessible on the PC board. Remove the ROM.
(3) Mount the new ROM, taking care of the direction. The ROM's socket
has 36 pins.
If 1M-byte ROM is used, it will be mounted taking the full space for
it. If the ROM is other than "IM-byte ROM, put it aside the rear of the
socket (aside IC3).
(4) Check the ROM is not contacted with feet of R18 when mounted.
(5) If there is no problem, put the upper cover and fix it with screws.
(6) Turn the FX-2111 on. Verify that the control program version on the
standby display is the same as the label on the ROM.
A Caution
When replacing the ROM, be sure to turn the power off. Also, take
care to install the ROM in correct position.
tfC6 tft
i)
4-1
3
.
Replacing Rechargeable Battery
(1) Turn the FX-2111 off and disconnect the power cord from the wall
outlet.
(2) Put the FX-2111 upside down. Loosen two screws off the battery cover.
(3) Replace the battery with new one. Insert the connector of battery cable
securely in place.
(4) Put the battery cover in the original position and fix it with two screws.
If the battery cover is not put squarely, rearrange the battery cable,
etc. to neatly accommodate the battery in the room.
(5) Press the ON key to verify that the FX-2111 is powered.
(6) The new battery may have been stored for a long period of time and
lowered in capacity due to self-discharge. So be sure to charge the
battery after replacing.
A Caution
When replacing the battery, be sure to turn the power off and disconnect the power plug from the wall outlet beforehand.
c
"v
-
V
NOTE: It is recommended to charge the battery in the stock every six
months. Also to make full use of the battery in the FX-2111, follow instructions in the operation manual.
4-2
4
.
Operation Check by Self-testing
The self-testing function permits you to perform the following tests:
1 Total Test
6. LCD Test
.
2
.
Sensitivity Test
7. Key Test
3 Time Constant Test
8. Status Test
4 Print Test
9. Automatic Power-off Test
.
.
5 Recorder Test
.
41
.
Self-testing Procedures
(1) Press the MODE key to place the FX-2111 in the program mode. The
display will be as follows:
1
AC FILTER
(OFF)
(2) Press the ImV (A) key. The following message will appear:
MAINTENANCE
PUSH (START) KEY
]
(3) Press the START/STOP key. The display will be as follows:
M-1 AC FILTER
FREQUENCY
(50HZ)
(4) Press the ImV (A) key. The following message will appear:
SELF TEST
PUSH (START) KEY
(5) Press the START/STOP key. The display will be as follows:
1
TOTAL TEST
Press the START/STOP key once more. The total test will start to test
sensitivity, time constant, print, recorder, and LCD.
To proceed to the Key Test, Status Test or Auto Power-off Test, select
it using the < or
key.
9 AUTO POWER OFF
4-3
r
？
1/2
1
Z
TEST
1
42
.
.
2 Print Test
'
n t a» « *
1 *
'
:
42
.
.
3 Recorder Test
;
....
;..>
.
Mm"
RECORDER 'EST
42
.
.
4 LCD Test
0 o
0 0 0 0 0
0 0 0 0 0
0
0
0
0
0 0 0
0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0
4-4
!
4
3 System Errors
.
System errors are caused by troubles with hardware or software.
Usually, they cannot be treated by users.
If a system error occurs, the following alarm message blinks and
the buzzer sounds:
(Blinks)
S
Y
T
S
E
CODE
M
m R
R
9
0
O
R
If a system error occurs during recording, the operator should stop
the FX-2111 from recording (stop the motor). All the operation keys will
be ineffective. Also, the normal operation will not be recovered unless
the power is turned off once.
Error codes and causes are as follows:
Code
01
Type
Description
Overheat
Thermal print head is abnormally heated to over 60oC.
02
ROM error
Checksum error
03
RAM error
RAM's read/write error
04
Unused interrupt 1
Unused software interrupt
05
Unused interrupt 2 Unused software interrupt
06
RTM error 1
Task No. to RTM macro is illegal.
07
RTM error 2
Task status to RTM macro is improper.
08
RTM error 3
Task's queue area overflows.
RTM: Real-time monitor
4-5
5
.
Disassembling/Reassembling the FX-2111
For maintenance, inspection and replacement of ROM and other
components, you need to disassemble the instrument. Use the following steps to disassemble: The FX-2111 will be reassembled in the reverse
order. Also, refer to the Chapter 9 Structural Diagrams" when disassembling.
"
When disasssembling or reassembling the FX-2111, take the following cautions:
A Caution
Disassembling/Reassembling Precautions
. Be sure to disconnect the power cord and make sure the instrument is turned off before disasasembling or reassembling.
. Do not remove the battery before disconnecting any PC board
.
. Take care that repeated disconnection of the key panel and sensor board may result in poor contact.
. Use proper tools to loosen screws
.
. When reassembling make sure that all screws are securely tightened and all connectors are completely inserted.
,
PC Board Handling Precautions
. PC boards are equipped with highly sensitive components to static
electricity.
. PC boards are highly sensitive electronic devices Put removed PC
boards in a proper protective bag or take appropriate measures to
protect them.
.
Handle PC boards carefully. A shock to them may damage the components.
. Never insert a connector to the powered PC board nor remove the
powered PC board.
4-6
51
.
Diassemling Procedure
Take the following steps to disassemble the FX-2111: (The procedure described here
is for the model equipped with the battery.)
Doublt Semus Screw (S)
~
M3x8
e7)
,
~
g3
jo
Step 1: Remove the cover of paper magazine
and the paper shaft.
Step 2: Open the battery cover on the bottom
panel and remove the battery.
Irom Ttanslormer
2-Double
Semus Screw (S)
,
Irom RecodJer Motor
Thermal Array Head Cable
Sensor Cable
Double Semus Sciew (S)
.
fe
I
M3x8
-
1/
1
51
.
*
0*
4-Double Semus Sciew
(S) M3x8
.
Step 3: Loosen four screws on the bottom
panel and remove the upper case.
Step 4: Diconnect connectors from the PC
board and loosen two screws on the
PC board. Then, the PC board can be
removed.
4-7
Double Semus Screw (S), M3x8
3-Double Semus
Screw (I). M3xB
r
-
>
8
0
8
0
0
8
0
Step 5: Loosen three screws which fix the
recorder onto the botton panel and
remove the recorder.
Step 6: Loosen the screw which fixes the
power board PCB-6238 and the transformer onto the bottom panel. Disconnect
the
connector
from
the
transformer and remove the power
board.
2- Double Semus Screw
(S)
,
M3»8
m
8
8
el
0
5
Step 7: Loosen the screws whch fix the
transformer onto the bottom panel.
Then, remove the transformer and
grounding parts. Now, disassembling is complete.
4-8
CHAPTER
5
Periodical Inspection
1
.
Periodical Inspection
1 1 Checking lead cable and power cord
1 2 Visual inspection
1 3 Cleaning the FX-2111
5-1
5-1
5-1
5-1
1 4 Self-test and total function check
5-1
15
Battery check
Safety Inspection
2 1 Measuring leakage current
2 2 Measuring protective grounding resistance
5-2
5-2
5-2
5-5
2 3 Remarks
5-6
.
.
.
.
.
2
.
.
.
.
1
Periodical Inspection
.
In this chapter, we describe the inspection to prevent troubles and
let the FX-2111 keep the sufficient safety and complete operating condition.
Perform the following at least once a year:
Check the lead cable, power cord, and grounding wire for any possible
damage.
. Conduct visual inspection
.
. Clean the FX-2111
.
. Perform the self-test and total function check
.
. Check the battery
. Check the leakage current
Measure the protective grounding resistance.
.
.
As with simple inspection, recommend the user to make it every day
or week. But let the user refer a complete function check and troubleshooting to the service engineer authorized by Fukuda Denshi.
11
.
Checking lead cable and power cord
Visually check the lead cable and power cord for any possible damage.
Check also the connectors for any possible looseness. If a damage is
found, replace them as required. Merely applying a tape may not repair
the cable sufficiently.
Also measure the resistance of each electrode to check for internal
cable disconnection and damage.
1
2 Visual inspection
.
.
.
.
Check that mechanical parts such as screws are securely fitted
Check that connectors inside the FX-2111 are securely connected
Check that there is no trace of damage
If a loose part is found tighten it securely.
.
1
.
.
.
,
3 Cleaning the FX-2111
.
The recommended number of cleaning times depends on the operating frequency and environment.
For cleaning, wipe the casing with a properly wetted soft cloth. You
can use the cleanser for tableware by weakening it with water. However,
take care that the cleaning solution or water may not enter the inside
through openings. Finally, wipe off wetty substance with a dry cloth.
1 4 Self-test and total function check
.
Perform the self-test described in "4. Maintenance" and check the total
function of the FX-2111 to ensure that the equipment operates safely and
completely.
5-1
15
.
Battery check
Measure the voltage between plus and minus sides of battery to check
the capacity. If it is below 9V, charge the battery. Also, if the battery has
not been charged for six months, charge it. If the battery will not be used
for a long period of time, remove it from the FX-2111 and store in a cool
place.
If the battery is below 6V, it may be difficult or impossible to charge.
In such a case, replacement is required.
2
.
Safety Inspection
To ensure the safety of FX-2111, it is recommended to perform safety
inspection. The test methods and measuring instruments are stipulated
in the standard for safety test. It is considered extremely difficult to fully
follow the standard for the safety test at the health care site. In checking
for maintenance and inspection, therefore, measure each specified value
as a rough rule of thumb.
We describe here examples of simplified measurement of leakage
current and protective grounding resistance.
A Caution
If you find a value which exceeds the allowable level, be sure to let
the user avoid using the FX-2111. If the user operates the FX-2111 as
it is, he/she may receive an hazardous accident.
2
.
1 Measuring leakage current
Prepare an instrument to measure the leakage current (electronic or
digital voltmeter), impedance device and power switch box.
The impedance device has the following configuration:
R1: 10kn ±5%
R2: 1kfi ±1%
R 1
C1: 0.015tiF ±5%
V:
R 2
C 1
-r
Voltmeter
V
You can obtain a leakage current by measuring voltages at both ends
of the impedance device.
5-2
The digital voltmeter shall indicate a true root mean square value to
a composite waveform of a frequency band from DC to 1MHz. If such a
voltmeter is not available in hand, you may use a commercially available
digital voltmeter for the purpose of simple maintenance and inspection.
However, make sure of the frequency band of the voltmeter and note that
the voltmeter will not indicate a leakage current at a frequency exceeding
the capacity.
(1) Example of checking ground leakage current (current flowing in protective grounding conductor)
Power Switch Box
Polarity Switches
oa
POWER
-
-
ob
-
Wall Outlet
O
Medical
Electronic
Instalment
a
°b
-
GND
GND
-
o
Oft
'
A Point
8 Point
Power Cord
M D
MD=lmpedance Measurement Device
See the figure above. A gounding terminal and the power switch box
which allows you to switch the polarity facilitate measurement of
ground leakage current.
The procedure to measure ground leakage current using the power
switch box is as follows:
. Measurement of ground leakage current is made by measuring
voltages at B point (grounding conductor of power cord) and A point
(wall grounding terminal) under normal condition and single fault condition.
Normal condition
. Measurement of ground leakage current under normal condition is
made by switching the polarity switches to a" positions, then to
b" positions. Thus, measurement is made in two ways.
"
"
Single fault condition
. Measurement of ground leakage current under single fault condition is made with a power fuse removed by switching the polarity
switches as above. Since the same measurement is made with
another fuse removed, measurement for single fault condition is made
in four ways.
5-3
(2) Example of measuring enclosure leakage current (current flowing from
enclosure to the ground)
Power Swdch Box
Polanty Switches
;
POWER
!
Oj-
-
-
ob
Medical
Electronic
Insirument
Wall OuUel
GND
GND
T-O
A Point
B Point
Opsn lor ilngla lauli condillocyPower Cord
| M D \-
Metal Foil
Probe
MO Impedance Measuiement Device
Or
Apply a metal foil of 20 x 10 cm to the isolated enclosure. Put the probe
to the metal foil for measurement.
Measurement of enclosure leakage current is made by measuring
voltages at A point (wall grounding terminal) and B point (desired
part of enclosure).
If the enclosure is isolated, stick a metal foil (e.g. aluminium foil) onto
the enclosure with a conductive tape and apply the probe to that
metal foil.
Measurement of enclosure leakage current under normal condition
is made by switching the polarity switches to "a" positions, then to
b" positions. A value measured under normal condition will be a
very small value near zero.
Measurement of enclosure leakage current under single fault condition is made with the wall grounding terminal and the grounding
conductor of power cord removed and by switching the polarity of
"
power source.
In leakage current measurement, take a maximum value as the measurement result.
The following are maximum allowable ground leakage current and
enclosure leakage current: In inspection, it is important to compare measurement values with past ones to check for any outstanding difference.
Maximum allowable leakage currents (117/253V AC)
Ground leakage current
Enclosure leakage current
Normal condition
Single fault condition
0 5mA
1 0mA
0 1mA
0 5mA
.
.
.
.
5-4
22
.
Measuring protective grounding resistance
According to the standard, protective grounding resistance shall be
measured by letting the testing transformer flow an AC current of 10-20A
from a power source of which the voltage with no load does not exceed
6V. Practically, however, it is not easy to prepare such a testing device.
We show therefore a simplified method as follows:
V
O
o
Power Iranslormer shall be able lo let a curfent of 13A How at a voltage ol less than 6V with no load
.
Medical Eqjipmenl
VW
A Point
Power
30
Transformer
Or
C Point
EO
(SOW)
6
A C
6V
Metal Part
VI (Voltage between
A and C)
o
2 30 V
V2 (Voltage between
B and C)
R: Protective Grounding
Resistance
B Point
.
O
t
El
Power Cord
'
Simplified Measurement of Protective Grounding Resistance
The testing circuit above allows you to measure the protective grounding resistance of equipment using an AC current of 2A or so. Connect the
power cord of equipment to El and the metal part (such as equipotentialization terminal) to EO. Make the conductor to EO shortest possible to
suppress the contact resistance. Flow a current of 2A or so to the equipment and measure voltage V1 between A and C points and V2 between
B and C points.
Since the flowing current is the same, the subject protective grounding
resistance can be obtained through the relations between the voltage ratio
and resistance ratio as follows:
R/3 = V2/V1
"
.
.
R (protective grounding resistance) = 3 V2A/1 (fi)
Measurement current may be 1A or so.
With the standard, the resistance between an accessible conductive
part and the protective grounding terminal shall be 0.1 Q maximum. In measurement at the grounding conductor of power cord with the power cord
connected, the grounding resistance including that of the protective
grounding conductor of power cord shall be 0.2ft maximum.
Protective grounding resistance
Resistance between protective grounding terminal
and potential equalization terminal
0 10 maximum
Protective grounding conductor of power cord and
potential equalization terminal
0 20 maximum
5-5
.
.
2 3 Remarks
.
Abovementioned measurement of protective grounding resistance
requires the power transformer which can flow an AC current of several
amperes and a testing fixture. If you cannot prepare such a testing power
transformer, you may measure it with the following method to obtain a
rough rule of thumb:
Measure the resistance between an accessible conductive part and
the protective grounding terminal to verify that it is lower than 0.1ft. If you
measure the protective grounding resistance with the grounding conductor
of power cord as the protective grounding terminal, the resistance shall
be lower than 0.2ft including that of the protective grounding conductor.
You need also to adjust the resistance of the testing lead or probe
used for measurement.
Medical Ecjjipmenl
Reslsianca Measuring InsUument
Testing Lead
Accessible Conductive Part
< 0 .
(e.g. potential equalization terminal)
1 fi
Protective Grounding Terminal
Potential Equalization Terminal
po-m
nvj
Protective Grounding Terminal
Simplified Method of Resistance Measurement
This method considerably differs from that of the standard. Consider
the result as a rough rule of thumb.
Protective grounding resistance
Resistance between protective grounding terminal
and potential equalization terminal
0 1ft maximum
Protective grounding conductor of power cord and
potential equalization terminal
0 2ft maximum
5-6
.
.
CHECK SHEET FOR PERIODICAL INSPECTION
Inspection Date:
Inspected by:
Model Number
Installation Site
Serial Number
Years of Use
Check Items
Judgment/Measurement : Remarks (Repair Required)
VISUAL INSPECTION
1 Cords and Cables
.
2
.
Power cord and lead cable for damage
Pass/Fail
Connections of power cord and lead cable
Pass/Fail
Casing and Accessories
. Casing for damage such as crack
. Casing for dirt
Pass/Fail
. Labels for fading letters
Pass/Fail '
Pass/Fail
. Screws for loooseness and dropout
Pass/Fail
. Electrodes for dirt and rust
Pass/Fail
. Expendables and operation manual
Pass/Fail
3 Connectors
.
Pass/Fail
. Power and lead connectors for damage and looseness
r
-
4 Others
.
. Power fuses for breakdown
Pass/Fail
Protective grounding terminal for damage
Pass/Fail
Switch panel for damage and dirt
Pass/Fail
Thermal print head for damage and dirt
Pass/Fail
Paper magazine for damage and dirt
Pass/Fail
LCD module for damage and dirt
Pass/Fail
ELECTRICAL INSPECTION
Pass/Fail
. AC operation and battery operation
. Time constant test
Pass/Fail
. Recorder test (paper speed & sensitivity)
Pass/Fail
. Printout test (for missed dots)
Pass/Fail
. Key test
Pass/Fail
. LCD test
Pass/Fail
. Auto power-off test
Pass/Fail
V)
. Battery charge
Pass/Fail
SAFETY
|jA Pass/Fail
. Ground leakage current (normal condition)
pA Pass/Fail
(single fault condition)
|iA Pass/Fail
. Enclosure leakage current (normal condition)
(single fault condition)
|jA Pass/Fail
Q Pass/Fail
. Protective grounding resistance
OTHERS
5-7
Charge OK/NG
CHAPTER
6
Circuit Diagrams
Overall Block Diagram
Overall Block Diagram
Main Board Circuit Diagram, 1/9 to 9/9
Power Board Circuit Diagram
433-5125
6-1
433-4893
6-3
523-2020... 6-5 to 6-21
524-2021
6-23
Sensor Board Circuit Diagram
Motor Module Circuit Diagram
524-1959
524-1960
6-24
6-25
Battery Pack Circuit Diagram
Overall Connection Diagram
Overall Connection Diagram
LCD Connection Diagram
Motor Connection Diagram
524-1961
433-5126
433-4894
434-4895
434-4896
6-26
6-27
6-29
6-31
6-32
r .
.
.
DC Input
*
Main Board
Pr.B-6409
Bult.r
Amplifier'
, i
Power Supply ' :
i
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>
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i
5
u
I
Isolated Section
rs
c
Butttr
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ConsUnt/
it
Reset
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u
n
ModulaiJon
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i25
I
5
.
Tranjlormer
Circuit
! fi!
1
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Resislanct
NelworK lor
Lead S«lectior
Demodulation
Circuit
I->
I
.
_
Amplifier
1
Control
i
Pustv
Power
Circuit
Isolation
Translormer
i
.
Pull
'
21
I .
Detector
Detector
Circuit
Circuit
PCB-€410
i:
i . - - -
I
. I
*
i
.
Digital
Power
+ 5V
i
Rectifier
Circuit
Overinpul
AC Inlet Board
\\
\\
'
Supplies
Oscillator
R-wav*
I
i
'
l
I
Circuit
1
.
'
J
+VFB
I
I
: i
+5V
j-
Generator ~
+5V.
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i
i US
Triangular |_
.
""
i
'
< £ IA
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r-»Wav*
liaV
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r-
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i
T
Trans I or mc/
: i
; i
i
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i
,
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Photo
Photo
Coupler
Coupler
i
0
t
A
Sensor Board:
-
Sensor
Circuit
.
'
PCB-62 39
Gale Array
Motor
Control
R
ROM
E
AM27C512
S
54Kbyte
QS6-F
L
- . - - . .1
0
Charging
Circuit
»| A V A T
CLK
SRH2254-12
16HHz
8Kbyte
lor Thermal Prinl Head
I
RAM
SRM2264-12
i
i
_
-»
RAM
.
i
S
S
T
i
i
i
U
t
'
i
B
TEMP
Prinl Head
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s
4 \
Thermal
？.
A
U
i
2HHz
In
B
Motor Module
_
H063B09
T
FD88O07-AC
NF-26P1/25|*
KM
; i
1 i
CPU
7t
,
i
,
I
:i
:i
ji
r
SKbvte
Ni-MH
r
LCD
NOH202AOO
Battery
PacK
i
Key Panel
i
DRAWING NO.
TITLE
Overall Block Diagram
MODEL NO.
ASSEMBLY NO.
433-5125
DATE
96.10.9
FX-2111 (USA)
6-1
,
DC Inpul
.
3
-
Main Board .
pcb-6409
Butter
'
-.1
Power Supply 1 ;
Amplitief
-
AC
sv
i
o
|i
Isolated Section
rs
i
c
Time
Resistance
5 Network lor
Lead Seltctior
o
V
Preamplilicr
-
xB
Reset
'
3
Modulation
Amplifier
Circuit
125
Circuit
o
1
1
Middle
ConslanU
-
Amplilier
Isolation
Transformer'
Demodulation
Circuit
Amplifier
o
T
2S1
!
5£
xl.25
Triangular
I
r-SWave
I
ItnV
i
Power
Circuit
1 ,
u
Isoiation k
Translormer
-
PushPull
Circuit
in
AT
Digital
Power
i
+ 5V
*
i
i
Supplies
Oscillator
Rectifier
Circuit
Oelector
Circuit
Detector
Circuit
5
-
Pulse
Generator
Circuit
t
I
Photo
Photo
Coupler
Coupler
CPU
HD63809
2MHz
D
Recorder
FET
A
T
Sensoi
Circuit
.
PCB-5239
X
-
Gate Array
5
Motor
Control
NF-26P1/25
<
R
ROM
AM27C512
8
S
64Kbyte
？
i
R AM
CLK
SRH2264-12
16MHz
8Kbyte
i
U
S
Charging
Circuit
I
> AVJT
i
S
i
I
>
-
TEMP
Thermal
Print Head
056-F
+2 V
i D
E
A
FD88007-AC
Motor Module
Transformer
+ 10V
v
Sensor Board:
pcB-e4io
11.
_
I
iVFB
i
Overinput
AC Input
Generator
i5V
Amplilier
Control
R-wave
,
AC Inlet Board
I
3
.
+ 5V
fc
U
230 V
B
RAM
U
SRM2264-12
S
8Kbyte
J
.
r
Ni-MH
LC 0
Battery
i
Pack
Key Panel
NDM202AOO
-
i
lor Thermal Prim Head
t
DRAWING NO.
TITLE
Overall Block Diagram
MODEL NO.
ASSEMBLY NO.
4334893
DATE
96.10.9
FX-2111 (CE)
6-3
noi!) i miss omtnsi smcifih
.
.
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TITLE
DRAWING NO.
Main Board Circuit Diagram, 1/9
MODEL NO.
FX-2111
ASSEMBLY NO.
523-2020
DATE
PCB-6409
6-5
95.01.09
co1
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o
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s
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TITLE
Main Board Circuit Diagram, 2/9
MODEL NO.
FX-2111
523-2020
DATE
ASSEMBLY NO.
PCB-6409
6-7
95.01.08
R12(.
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Main Board Circuit Diagram, 4/9
MODEL NO.
FX-2111
523-2020
DATE
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PCB-6409
6-11
95.01.08
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TITLE
Main Board Circuit Diagram, 5/9
MODEL NO.
FX-2111
ASSEMBLY NO.
523-2020
DATE
PCB-6409
6-13
95.01.08
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TITLE
Main Board Circuit Diagram, 6/9
MODEL NO.
FX-2111
523-2020
DATE
ASSEMBLY NO.
PCB-6409
6-15
95.01.08
6
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TITLE
Main Board Circuit Diagram, 7/9
MODEL NO.
FX-2111
523-2020
DATE
ASSEMBLY NO.
PCB-6409
6-17
95.01.08
P7
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TITLE
Main Board Circuit Diagram, 8/9
MODEL NO.
FX-2111
523-2020
DATE
ASSEMBLY NO.
PCB-6409
6-19
95.01.08
nxi 2 1 1 90 I
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TITLE
Main Board Circuit Diagram, 9/9
MODEL NO.
FX-2111
523-2020
DATE
ASSEMBLY NO.
PCB-6409
6-21
95.01.08
J
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Power Board Circuit Diagram
MODEL NO.
FX-2111
1
B
ASSEMBLY NO.
524-2021
DATE
PCB-6410
6-23
96.01.08
r
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DRAWING NO.
TITLE
Sensor Board Circuit Diagram
MODEL NO.
FX-2111
524-1959
DATE
ASSEMBLY NO.
PCB-6239
6-24
94.07.14
NF-26P . /2'i
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MODULE
DRAWING NO.
TITLE
Motor Module Circuit Diagram
MODEL NO.
ASSEMBLY NO.
524-1960
DATE
94.07.14
FX-2111
6-25
VHfl-4M
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4
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PRCK
6-HRflRFD
DRAWING NO.
TITLE
Battery Pack Circuit Diagram
MODEL NO.
524-1961
DATE
ASSEMBLY NO.
94.07.14
FX-2111
6-26
F C P-2 2 2 2 A T
INLET BOARD
PI
0
PZ
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BOARD
PANEL
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PCB-6239
DRAWING NO.
TITLE
Overall Connection Diagram
MODEL NO.
ASSEMBLY NO.
433-5126
DATE
96.10.09
FX-2111 (USA)
6-27
FCP-2222W
INLET
BOARD
PI
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PCB-6239
DRAWING NO.
TITLE
Overall Connection Diagram
MODEL NO.
ASSEMBLY NO.
4334894
DATE
96.01.08
FX-2111 (CE)
6-29
SOLDER
NDM202AOO
14
3
2
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2
(7)
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F4
TITLE
DRAWING NO.
LCD Connection Diagram
MODEL NO.
ASSEMBLY NO.
434-4895
DATE
96.01.08
FX-2111
6-31
MOTOR
NF-26P1/2 5
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DRAWING NO.
TITLE
Motor Connection Diagram
MODEL NO.
1
1 6 Omml pin
14 0
2 pin
434-4896
DATE
ASSEMBLY NO.
96.01.08
FX-2111
6-32
CHAPTER
7
laqram
Main Board Assembly Diagram, 1/2 & 2/2 433-4897
Inlet Board Assembly Diagram
434-4899
7-1 to 7-3
7-5
HOW 10 MOUNT IC22
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COMPONENT SIDE
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TITLE
Main Board Assembly Diagram, 1/2
PC BOARD
MODEL NO.
FX-2111
ASSEMBLY NO.
433-4897
DATE
PCB-6409
OMPOfCNT SIDE
7-1
95.12.15
is FLUX AREA .
1
5
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TITLE
DRAWING NO.
Main Board Assembly Diagram, 2/2
MODEL NO.
FX-2111
DATE
ASSEMBLY NO.
PCB-6409
0
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TITLE
DRAWING NO.
Inlet Board Assembly Diagram
MODEL NO.
FX-2111
434-4899
DATE
ASSEMBLY NO.
PCB-6410
7-5
96.01.08
CHAPTER
8
Electrical Parts Lists
1 FX-2111 Main Blocks
674-11338
8-1
2 Main Board, PCB-6409 SAS SMD for FX-2111
674-11339
8-2
3 Main Board, PCB-6409 THD for FX-2111
674-11340
8-9
AC Inlet Board, PCB-6410 THD for FX-2111 (115V)... 674-11664
8-11
AC Inlet Board, PCB-6410 THD for FX-2111 (230V)... 674-11340
8-12
LCD Assembly for FX-2111
Parts Supplied to Wiring/Assembling Process
674-11342
8-13
674-11343
8-14
.
.
.
4
.
5
.
6
.
7
.
for FX-2111
1 FX-2111 Main Blocks
.
674-11338
Parts No.
9E3041
Description
Symbol
Drawing No.
PC Board AS
Q'ty
1
Main Board
1
9F3419
PCB-6409 with ROM
9F3293
ROM Set
9F3424
PCB-6409 SAS
9G3739
PCB-6409 SMD
674-11339
1
9G3740
PCB-6409 THD
674-11340
1
674-10486
1
1
AC Inlet Board
9F3420
PCB-6410 Assembly
674-11341
1
9F3421
LCD Assembly
674-11342
1
9D0995
Set of Supplied Parts to Assembling Process (CE)
9E2793
Set of Assembled Electrical Parts (2307)
674-10513
1
9E3042
Set of Assembled Electrical Parts (CE)
674-11359
1
9D0996
Set of Supplied Parts to Wiring Process (CE)
674-11343
1
8-1
1
Remarks
2 Main Board, PCB-6409 SAS SMD for FX-2111
.
674-11339
Parts No.
Drawing No.
Description
Symbol
Q'ty
Resistors
1A7510A
R1, 15, 23,
75-77,
145, 163,
168, 176,
181, 192,
197, 200,
202, 207,
209, 212,
219, 220,
226, 227,
229, 230,
232, 236,
239, 242,
RK73H2AF, Square Chip
lOkfi
30
RK73H2AF, Square Chip
20kfi
51
245
1A7503A
R2~11, 14,
26, 29, 30,
34-40,
43, 46 57,
68-70,
86-92,
140, 158,
182, 183,
189-191,
,
195,
201,
210,
225,
196,
204,
211,
241,
254, 255
1A7685A
R12, 84, 110
RK73H2AF, Square Chip
12kG
3
1A9662A
R13, 41, 51,
72, 80,
199, 206,
RK73H2AF, Square Chip
30kn
8
RK73H2AF, Square Chip
560kn
3
RK73H2AF, Square Chip
200kn
8
RK73H2AF, Square Chip
3kil
5
RK73H2AF, Square Chip
1kfi
14
215
1A7641A
R16, 117,
148
1A9666A
R17, 32, 58,
116, 169,
173, 231,
252
1A9657A
R19, 59,
119, 164,
222
1A9655A
R20, 28, 64,
65, 67, 82,
93-100,
105, 109,
132, 133,
136, 144,
150, 156,
217, 248
8-2
Remarks
2 Main Board, PCB-6409 SAS SMD for FX-2111. continued
.
674-11339
Parts No.
Symbol
Description
Drawing No.
Q'ty
1A7512A
R85, 147
RK73H2AF, Square Chip
16kn
2
1A7502A
R22
RK73H2AF, Square Chip
6 8kG
1
1A9263A
R24
SR73K2EJ, Metal Film
0 1fi/0.5W
1
1A7522A
R25, 63, 81,
RK73H2AF, Square Chip
lOOkfi
5
RK73H2AF, Square Chip
5 1k0
10
.
.
141,142
1A7545A
R27, 61,
103, 171,
174, 214,
216, 228,
.
249, 250
1A7571A
R31
RK73H2AF, Square Chip
300fl
1
1A9631A
R33
RK73K2AF, Square Chip
100
1
1A7534A
R42, 62
RK73H2AF, Square Chip
3 48kU
2
1A7584A
R44, 45, 56,
78, 124,
125, 165,
RK73H2AF, Square Chip
1Mfi
11
RK73H2AF, Square Chip
1001]
6
RK73H2AF, Square Chip
2kU
14
166
,
.
218,
244, 246
1A9653A
R47, 48, 55,
74, 115,
161
1A9656A
R49, 50, 52,
71, 73,
126-129,
143, 159,
178, 179,
187
1A9396
R53
RN73F2ATD-B, Metal Film
1
1A9398
R54
RN73F24TD-B, Metal Film
1
1A9303A
R60
RH73H2AF, Square Chip
28.7k(]
1
1A9271
R66
RK73H3AF, Metal Film
IkO/IW
1
1A7681A
R79
RK73H2AF, Square Chip
2 2kQ
1
R7519A
R83, 146,
160, 193,
RK73H2AF, Square Chip
51 kl)
15
198,
205,
213,
223,
240,
203,
208,
221,
237,
243,
247
8-3
.
Remarks
2 Main Board, PCB6409 SAS SMD for FX-2111., continued
.
674-11339
Parts No.
Symbol
Drawing No.
Description
Q'ty
1A7547A
R85, 147
RK73H2AF, Square Chip
16kn
2
1A7656A
R101, 151,
RK73H2AF, Square Chip
240ki]
3
162
1A7558A
R104, 122
RK73K2AF, Square Chip
42.2fl
2
1A7689A
R106, 108,
111, 155,
RK73H2AF, Square Chip
82kn
5
167
1A9665A
R107
RK73H2AF, Square Chip
120kQ
1
1A9397
R112~114
RN73F2ATD-B, Metal Film
78.7ki]
3
1A7674A
R118, 121,
123, 149,
RK73H2AF, Square Chip
430n
5
RK73H2AF, Square Chip
13kn
4
152
1A7652A
R120, 131,
157, 238
1A7616A
R130
RK73H2AF, Square Chip
56kn
1
1A9270A
R134
SR73H2EF, Metal Film
0 51Q/0.25W
1
1A7604A
R135
RK73H2AF, Square Chip
1 43k£l
1
1A7540A
R137, 138,
RK73H2AF, Square Chip
24kQ
4
.
.
233, 251
1A7554A
R139
RK73H2AF, Square Chip
36kfi
1
1A7578A
R153, 154
RK73H2AF, Square Chip
150fi
2
1A7202
R170
TRN60LG, Cylindrical Tantalum Alloy
1A7591A
R175, 180,
RK73H2AF, Square Chip
3 5Mn
1
160kfi
4
.
234, 253
1A7526A
R172, 177
RK73H2AF, Square Chip
1A9393
R184
RN73F2ATD-B, Metal Film
11011
1
1A7640A
R185, 186
RK73H2AF, Square Chip
140kfi
2
1A7587A
R188
RK73H2AF, Square Chip
3 4kQ
1
1A9395
R194
RN73F2ATD-B, Metal Film
13kn
1
1A7668A
R256~259
RK73H2AF, Square Chip
220n
4
1A7528A
R224
RK73H2AF, Square Chip
698kH
1
2
8-4
.
Remarks
2 Main Board, PCB-6409 SAS SMD for FX-2111, continued
.
674-11339
Parts No.
Description
Symbol
Drawing No.
Q'ty
Capacitors
1B5021A
01,2, 4, 6,
7 11, 13,
14, 22, 25,
26, 28-34,
36, 37, 39,
40, 42, 43,
GRM40F104Z50, Layered Ceramic Chip
0.1 pF
59
,
45, 49, 50,
52, 53,
61 -63,
66-68,
73, 76, 77,
85, 86, 89,
93, 94, 96,
97, 99,
100,
105-108,
116-119,
125-128
1B1701
C3
ECSTCY105, Tantalum Electrolytic 1.0(jF
1
1B5412A
C5, 27
EEV-H81CV220, Aluminum Electrolytic 22nF/16V
2
1B5408A
C8
EEV-HBIHV0010, Aluminum Electrolytic 1mF/50V
1
1B5073A
C9, 16, 41,
56, 58, 87,
GRM40CH1U2J50, Layered Ceramic
7
lOOOpF
88
1B0702
1B5055A
C10
C12, 51, 69,
25CV100GX, Aluminum Electrolytic Chip
100uF/25V
for High Frequency
1
GRM40B222K, Layered Ceramic
2200pF
4
134
1B0209
C15
16SM6R8M, OS
6.8mF/16V
1
1B0208
C17, 21
10SM22M, OS
22tiF/10V
2
1B5019A
C18
GRM40CH101J, Layered Ceramic
100pF
1
1B5022A
C18, 20, 57,
59, 60, 65,
GRM40B103K, Layered Ceramic
O.OIpF
8
MCH215C223K, Layered Ceramic
0.022mF
5
51pF
1
75, 115
1B5062
C23, 24, 38,
47, 71
1B5002A
C35
GRM40CH510J, Layered Ceramic
1B8501
C44, 90, 91
35CV47GX, Aluminum Electrolytic Chip
for High Frequency
47pF/35V
1B5815
C46
ECHU1H102G, Layered Film
8-5
1000pF
3
1
Remarks
2 Main Board, PCB-6409 SAS SMD for FX-2111
.
674-11339
Parts No.
1B5027
Description
Symbol
C48, 131,
Drawing No.
MCH215A561J, Layered Ceramic
3
3300pF
Q'ty
133
1B5816
C54
ECHU1C332G, Layered Film
1B5402A
C64, 70, 95
EEV-HB1 EV4R, Aluminum Electrolytic
4 7nF/25V
3
.
1
1B5513A
C55, 83
GRM42-6F224Z, Layered Ceramic
0.22nF
2
1B5011A
C72, 74
GRM42-6B473K, Layered Ceramic
0.047mF
2
1B5818
C78
ECHU1C683J, Layered Film
0.068mF
1
1B5261
C79, 80, 92
ECWU1C224J, Layered Film
0.22nF
3
1B5076A
C81, 100,
110, 112,
GRM40B332K, Layered Ceramic
3300pF
6
124, 135
1B5044A
C84
GRM40B153K, Layered Ceramic
0.015nF
1
1B5003A
C98, 103,
104, 113,
114, 120,
121, 123,
GRM40CH101J, Layered Ceramic
150pF
9
129
1B5403A
C101, 102
EEV-HB1EV330, Aluminum Electrolytic
4 7nF/16V
2
.
1B5808
C111,113
ECHU1H140J, Layered Film
O.lpF
2
1B5014C
C130
MCH325F274Z, Layered Ceramic
0.47nF
1
1B5001A
C132
GRM40CH300J, Layered Ceramic
30pF
1
1B5074A
C138
GRM40CH331J, Layered Ceramic
330pF
1
Diodes
3929
D1~6
D3FS4A (2.6A, 40V)
6
1D4200
D7
02CZ-5.1V, Zener
1
1B3885
D8, 1, 15, 32
1SS301
3
1D3886
D9, 11, 12,
16, 17, 19,
20, 23-31,
1SS302
18
33, 34
1D4113
D10
02CZ-3.0K, Zener
1
1D3928
D13, 14, 18,
D1FS4A
4
21
8-6
Remarks
2 Main Board, PCB-6409 SAS SMD for FX-2111, continued
.
674-11339
Parts No.
1D4552
Description
Symbol
D22
U1ZB12, Zener
Drawing No.
Q'ty
1
Transistors
1D1735
Q1~3, 5, 8,
12 14, 15,
27, 29, 30,
UN5212
13
,
33, 38
1D989
Q6
2SC-2713GR
1
1D0116
Q7
2SA-1163G
1
1D2385
Q9
2SK-739-2, FET
6
1D2392
Q10
2SK-1062, FET
1
1D0117
Q11
2SA-1162V
1
1D1734
Q13, 18, 26,
28, 42, 43
UN5112, Digital
6
1D0968
Q16
2SC-1623(L5/L6)
1
1D2394
Q17
2SJ245S, FET
1
1D2382
Q19, 22, 23,
31, 32, 34
SST4393, FET
6
1D2342
Q20, 21
2SK1920-FA, FET
2
1D0153
Q25
2SA-1463(1 K)
1
1D1713
Q35~37,
39-41,
FMW2
9
44-46
Integrated Circuits
1E5037A
IC2, 5
HM6264BLFP-10LT, RAM
2
1E2769
IC4
NJM2103M, Reset IC
1
1E6168
IC6
HA16120FP, Switching Regulator
1
1E6245
IC7
PQ05SZ5, Low-loss Regulator
1
IE2621
ICS
FD88007-AC, Gate Array
1
1E6235
IC9, 33
NJM78L05UA, 3-terminal Regulator
2
1E7205
IC10
S-8437AF
1E5390A
IC11
TC-74HC245AF, CMOS Logic
,
Inversion-type Switching Regulator
8-7
1
1
Remarks
2 Main Board, PCB-6409 SAS SMD for FX-2111, continued
.
674-11339
Parts No.
Drawing No.
Description
Symbol
Q'ty
1E4424
IC12, 19
TC-4584BF, CMOS Logic
2
1E0374
IC13
HPC4074G2, Low-noise FET-input OP Amp.
1
1E5397A
IC14, 23
TC-74HC04AF, CMOS Logic
2
1E5412A
IC15
TC-74HC541AF, CMOS Logic
1
1E6167
IC18
bq2003S> Quick Charging IC
1
1E5543
IC16
TC7W04F, L-MOS Logic
1
1E4169
IC17
TC-4053BF, CMOS Logic
1
1E5595
IC20
TC-74AC74F, CMOS Logic
1
1E0198
IC21, 31
pPC4064G2, Low Power CoSsumption J-FET
Input Operational Amplifier
1E0715
IC24
pPC4064G2(2), Low Power Oonsumption J-FET
Input Operational Amplifier
1E2613A
IC25
HEF4046BT, PLL
1
1E0266
IC26
MPC358G2, Comparator
1
1E5542
IC27
TC7W02F, L-MOS Logic
1
1E8961
IC28~30
PS2652L2-V(K), Photo Coupler
3
1E2083
IC32
LT1004CS8-1.2, Voltage Reference
1
1E7221
IC34
NJM79L05UA, 3-terminal Regulator
1
1E4177
IC35
TC-4093BF, CMOS Logic
1
1E4170
IC36, 38, 41,
TC-4051BF, CMOS Logic
4
45
1E0264
IC37, 39, 42
MPC4064G2(2), Low Power Oonsumption J-FET
Input Operational Amplifier
1E4423
IC40
TC-4535BF, CMOS Logic
1
1E0365
IC43
pPC339G2, Comparator
1
1E4182
IC44
TC-4094BF, CMOS Logic
1
Coil
1T6047
1H6409
L2
470mH
LPC4045TE-471K
Printed Circuit Board, PCG-6409
8-8
1
1
Remarks
3 Main Board, PCB-6409 THD for FX-2111
.
674-11340
Description
Symbol
Parts No.
Drawing No.
Q'ty
Resistor
1A7040
R18
RSSX3L20 0.01J/3W, Metal Film
1
Capacitors
1B4701
C82
ECHE1H105JZ, Metalized
1
1B0866
IC136
URS1E222MHZ 2200/25V, Aluminum Electrolytic
1
1B0713
CI37
URS1V102MHZ 1000/35V, Aluminum Electrolytic
1
Transistors
1D2393
Q4, 24
2
2SJ245L, FET
Crystal Oscillator
1D7620
XI
1
JX0-5S 16MHz (with stand)
Integrated Circuits
1E1957
IC3
HD63B09E, CPU
1
1E7021
IC22
PQ30RV1/11, Low-loss Regulator
1
1E9198
DIC«?iG11S1 IC Socket
1
1E9199
DIC640G11S1, IC Socket
1
,
Lithium Battery
1U0231
BT1
CR-1/3-FT2-1
684-2428
1
Connectors
1F0215
P1
B3P-VH
1
1F1068
P2
AXB114001 BB
1
1F3208
P3
S-G8036 #01
1
1F0562
P4
DF3A-6P-2DSA
1
1F9376
P5
DF3A-15P-2DSA
1
1F0548
P6
008370061000800
1
1F1131
P7
008370151000800
1
1F1004
P8
RDAG-15SE1(F)
1
8-9
Remarks
3 Main Board, PCB-6409 THD, continued
.
674-11340
Parts No.
1F0365
P10
Drawing No.
Description
Symbol
B4P-VH
Q'ty
1
Arrestor
1L4807A
NE1
Y06S-230B
1
Fuses
1L4057
F1, 2
3 15A
TR-5 K19374
2
.
Coils & Ferrite Core
1T6242
L1
HK-05S035-2010 RBP
200mH
684-2109
1
1T6243
L3
HK-04D030-1510 RBP
150nH
684-2108
1
1L4584
L4
BL01RN1-A62, Ferrite Core
1
Isolation Transformers
1T6015A
T1
FT-2111
684-2153
1
1T6016A
T2
FT-2155
684-2154
1
Piezoelectric Buzzer
1S3200
BZ1
1
PKM13EPP-4002
8-10
Remarks
4
.
AC Inlet Board, PCB-6410 THD for FX-2111 (115V)
674-11664
Parts No.
Symbol
Description
Drawing No.
Q'ty
Fuses
1L4476
239001
1L4905
MF-561A, Fuse Holder
1A
2
2
Locker Switch
1G3508
SJ-2S4A-07BB
1
AC Inlet
1D2393
NC176-1.5
1
GND Terminal
1K1151
FX-2111GND (A)
1
Connector
1F0159
1
B2P-VH
Choke Coil
1T6342
TF1028S-801Y2R0-01
1
Spacer
1Z4311
1/2
LR-1.5
Printed Circuit Board
1H6410
323-3961
PCB-6410
8-11
1
Remarks
5
.
AC Inlet Board, PCB-6410 THD for FX-2111 (230V)
674-11340
Parts No.
Drawing No.
Description
Symbol
Q'ty
Fuses
1L4091
No. 19195
1L4905
MF-561A, Fuse Holder
500mA
2
2
Locker Switch
1G3508
1
SJ-2S4A-07BB
AC Inlet
1D0288
NC176-1.5
1
GND Terminal
1K1151A
314-3471
GND (A)
1
Connector
1F0159
1
B2P-VH
Choke Coil
1T6342
1
TF10283-801Y2R0-O1
Spacer
1Z4311
1/2
LR-1.5
Printed Circuit Board
1H6410
1
PCB-6410
8-12
Remarks
5
.
LCD Assembly for FX-2111
674-11342
Parts No.
Symbol
Description
Drawing No.
Q'ty
LCD
1 LI 709
NDM202A00
1
Connector
1F1085
AXL214901
1
Spacers
6B8308
SP-15
2
6B9216
Grounding Piece
1
Shielding Fingers
6B9217
(A)
1
6B9218
(B)
1
8-13
Remarks
7
.
Parts Supplied to Wiring/Assembling Process for FX-2111
674-11343
Parts No.
Description
Symbol
Drawing No.
Q'ty
434-4725
1
1M0385
Motor Assembly
1M0466
Inlet Board Grouding Cable 3 with Core
1M0482
Inlet Board Grounding Cable 3
1L4581
Ferrite Core, 5977-000601
1
6G0234
Heat Shrink Tube, F2 25x0.4, 30mm long
1
1K0031
Press-fit Terminal, TMEV1.25-3
1
8-14
1
684-2415
1
Remarks
CHAPTER
9
Spare Parts Lists
PCB-6238
2 PCB-6236
674-10554
674-10555
9-1
9-2
Paper Magazine
674-10556
9-3
Recorder
674-10557
9-4
Upper Case
674-10558
9-5
Lower Case
7 Screws
674-10559
674-10560
9-6
9-7
1
.
.
3
.
4
.
5
.
6
.
.
1 PCB-6238
.
674-10554
Parts No.
Symbol
Description
Drawing No.
Q'ty
9E2963
PCB-6238B (2) Assembly for 115V
9F3331
PCB-6238 Assembly for 115V
5T3111
Nuts, Type 3 M6
2
5T2009
Spring Washer, Nominal Dia. 6mm
1
9E2964
PCB-6238B (3) Assembly for 230V
1
9F3310
PCB-6238 Assembly for 230V
1
5T3111
Nut, Type 3 M6
2
5T2009
Spring Washer, Nominal Dia. 6mm
1
1L4476
Fuse, 239001 for 115V
2
1L4475
Fuse, 239500 for 230V
2
9-1
1
Remarks
2 PCB-6236
.
674-10555
Parts No.
Symbol
Description
Drawing No.
Q'ty
9E2965
PCB-6236 (1) Assembly
1
9F3307
PCB-6236 Assembly for FX-2111(N)
1
5R1604
Double Semus Screw, M3x6
2
9E2966
PCB-6236 (2) Assembly
1
9F3309
PCB-6236 (with ROM) for FX-2111 (N)
1
5R1604
Double Semus Screw, M3x6
2
1E8531
Programmed ROM for FX-2111 (36-202)
1
1L4057
Fuse, TR-5 K19374, 3.15A
2
1U0231
Lithium Battery, CR-1/3-FT2-1
684-2428
1
9F3305
LCD Assembly
634-4726
1
9F3305
Spacer, SP-15
2
9-2
Remarks
3
.
Paper Magazine
674-10556
Parts No.
Symbol
Description
Drawing No.
Q'ty
9H0402
Platen Roll Assembly
6B8324A
Platen Roll
6A5350
Bearing, LF-740ZZ
6B8325
Gear, 38A
5R3003
Countersunk Screw, M2x6
1
9F2648
Paper Magazine Assembly
1
6B8323
Paper Magazine
9H0402
Platen Roll Assembly
1
224-0890
1
2
224-0313
222-0889
1
1
1
9-3
Remarks
4 Recorder
.
674-10557
Parts No.
Description
Symbol
Drawing No.
Q'ty
9H0617
Gear 38B Assembly
6B8320
Gear, 38B
5R8001
Setscrew, M3x3
1
9H0812
Thermal Array Head Assembly
1
6B8316
Thermal Array Head, Q56-F
684-2092
1
6B8316A
Thermal Array Head Mounting Plate
213-3448
1
6B8394
Tension Coil Spring, DE542
2
5R0602
Semus Screw, M3x5
2
9F3354
Recorder Assembly
1
9H0812
Thermal Array Head Assembly
1
9H3215
Recorder Chassis SU
1
1M0385
Motor Assembly
1
9H0617
Gear 38B Assembly
1
9H3216
Grounding Piece (C) SU
6B8307
Grounding Flexible Conductor
6B8395
Sensor Presser Sponge
9F3289B
PCB-6295SMD Sensor Board
1M0381
Thermal Array Head Cable
5R1851
Double Semus Screw, M3x4
1
5R1604
Double Semus Screw, M3x8
1
9H3522
Paper Shaft SU
1
244-0314
313- 3461
1
6B8307
1
314- 3465
1
674-10490
1
684-2093
1
224-0891
9-4
1
1
Remarks
5
.
Upper Case
674-10558
Parts No.
Description
Symbol
Drawing No.
Q'ty
1
9F3355
Upper Case Assembly
9H3211C
Upper Case SU
111-6621
1
6B8305
LCD Filter
114-6625
1
6B9171
Lock Spring
114-6811
1
1G9340A
Key Panel
684-2146
1
5H9128
Rated Power Label (B) for 115V
154-4573
1
5H9130
Rated Power Label (C) for 230V
154-4575
1
9-5
Remarks
6 Lower Case
.
674-10559
Parts No.
Symbol
Description
Drawing No.
Q'ty
9F3356
Lower Case Assembly (1)
9H3212C
Lower Case SU
111-6622
1
6B8306
Insulation Sheet
314-3463
1
6B8327
Batter Presser Sponge
314-3466
1
9H3213A
Grounding Piece (A) SU
313-3459
1
1T1558
Transformer, FCP2222AT for 115V
684-2158
1
1T1559
Transformer, FCP-2222UT for 230V
684-2157
1
6B8326A
Battery Cover
112-6624
1
5H9127
Instructions Label (B)
154-4572
1
5H9138
Instructions Label (C) for 230V
154-4577
1
5H9129
Fuse Label (B) for 115V
154-4574
1
5H9131
Fuse Label (C) for 230V
154-4576
1
5H5639
Lithium Battery Label
154-3574
1
6B6796
TM-166 No. 12
1
1
9-6
Remarks
7 Screws
.
674-10560
Parts No.
Symbol
Description
Drawing No.
Q'ty
9H3238
Set of Screws for Ni-MH
5R1604
Double Semus Screw, M3x8
5R0602
Semus Screw, M3x5
2
5R1851
Double Semus Screw, M3x4
1
5R3003
Countersunk Screw, M2x6
1
5R8001
Setscrew, M3x3
1
9-7
1
24
Remarks
CHAPTER
10
Structural Diagrams
FX-2111 (USA)
External Appearance (1)
External Appearance (2)
413-0994
413-0995
10-1
10-3
424-3619
10-5
423-3620
423-3621
422-3622
422-3623
412-0996
10-7
10-9
10-11
10-13
10-15
413-0849
413-0927
10-17
10-19
AC Inlet Board
424-3443
10-21
Main Board*
423-3444
10-23
Paper Magazine Assembly*
Paper Shaft Assembly*
Recorder Assembly*
Upper Case Assembly
Lower Case Assembly (1)
Lower Case Assembly (2)
Lower Case Assembly (3)
Exploded View
423-3250
424-3251
423-3252
423-3445
423-3446
423-3447
422-3448
412-0928
10-25
10-27
10-29
10-31
10-33
10-35
10-37
10-39
AC Inlet Board
Upper Case
Lower Case Assembly (1)
Lower Case Assembly (2)
Lower Case Assembly (3)
Exploded View
FX-2111 (CE)
External Appearance (1)
External Appearance (2)
>
Asterisked diagrams are common to both FX-2111 (USA) and FX-2111 (CE).
2
6
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II
8
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as
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DRAWING NO.
TITLE
External Appearance (1)
MODEL NO.
ASSEMBLY NO.
413-0994
DATE
96.09.30
FX-2111 (USA)
10-1
JUL
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DRAWING NO.
TITLE
External Appearance (2)
MODEL NO.
ASSEMBLY NO.
413-0995
DATE
96.09.30
FX-2111 (USA)
10-3
2
\
a*
o
®
o
0
O
2-M8 Nut & Plain Washer
T
r
Key
No.
Parts No.
1
1L4476
2
1K1151A
i
Description
Drawing Na
314-3471
Fuse, 239001
2
GND Terminal (A)
1
AC inlet Board
FX-2111 (USA)
Remarks
DRAWING NO.
TITLE
MODEL NO.
Q'ty
424-3619
DATE
ASSEMBLY NO.
PC 6-6410
10-5
96.09.30
5
3
i
6
''
1
A
-
55
33
0
2
ti
1
»l
4
Si'S
II
s
Of
S»!|!Li
TO
8
7
Key
No.
Parts Na
Description
Drawing Na
1
Q'ty
Upper Case Assembly
1
2
9H3494
111-6862
Upper Case Assembly SU for USA
1
3
1G9340A
684-2146
Key Panel
1
4
6B8305
114-6625
LCD Filter
1
5
5H9128
154-4573
Rated Power Label (B)
1
6
6B9171
114-6811
Lock Spring
1
7
5H9237
154-4670
Caution Label
1
Remarks
DRAWING NO.
TITLE
Upper Case
MODEL NO.
ASSEMBLY NO.
423-3620
DATE
96.09.30
FX-2111 (USA)
10-7
4
2-Double Semus Screw M3x8
,
2-Taping
Pan-head Screw M2.6x6
,
6
A
A
A
C
3
Pasted
2
A
C
f_
o
TV
1
Key
Na
Parts Na
Description
Drawing Na
1
Q'ty
Lower Case Assembly (1)
1
2
9H3495
111-6863
Lower Case Assembly SU for USA
1
3
6B8327
314-3466
Battery Presser Sponge
1
4
6B8326
112-6624
Battery Cover
1
5
5H9374
154-4669
Fuse Label (D)
1
6
9E7329
Rating label
1
Remarks
DRAWING NO.
TITLE
Lower Case Assembly (1)
MODEL NO.
ASSEMBLY NO.
423-3621
DATE
96.09.30
FX-2111 (USA)
10-9
7
Key
No.
Drawing No.
1
B
A
Parts No.
3
Q'ty
Lower Case Assembly (1)
1
423- 3621
Lower Case Assembly (1)
1
9H3213A
313- 3459
Grounding Piece
1
684-2156
Transformer, FCP2222AT
1
2
4
Description
4
1T1558
5
9F3420
424- 3619
PCB-6410 Assembly
1
6
6B8306
314- 3463
Insulation Sheet
1
7
6B9198A
314-3601
Insulation Cover
1
Remarks
\
.v
A
3
B
O
5
2
o
3
o
9
a
0
6
o
o
DRAWING NO.
TITLE
Lower Case Assembly (2)
MODEL NO.
ASSEMBLY NO.
422-3622
DATE
96.09.30
FX-2111 (USA)
10-11
2
9-Double Semus Screw M3x8
,
G
c
4
E
F
IF
D
0
.
c
D
A
G
it
E
5
B
O
3
F
O
5
0
11
0
-1
p
6
V
o
Key
Na
Parts Na
1
Description
Drawing Na
Q'ty
422- 3622
Lower Case Assembly (2)
1
2
9F3354
423- 3252
Recorder Assembly
1
3
1M0381
684-2093
Thermal Array Head Cable
1
4
1T1558
423-3444
PCB-6409 Assembly
1
Remarks
7
DRAWING NO.
TITLE
5
5H9615
154-4836
Lead Label (C)
1
6
5H5639
154-3574
Lithium Battery Label
1
7
5H9417
154-4821
Patient Label
1
Lower Case Assembly (3)
MODEL NO.
ASSEMBLY NO.
422-3623
DATE
96.09.30
FX-2111 (USA)
10-13
2
i
5S>
'
II
D
At
r
A
m
3*
Li
6
A
Double Semus Screw
3
M3x8
4
A
B
ii
s"
2-D-jubl
e Semus Screw M3x8
11
,
Key
Na
Parts No.
Description
Drawing Na
Q'ty
Remarks
DRAWING NO.
TITLE
1
423-3623
Lower Case Assembly (3)
1
2
423-3620
Upper Case Assembly
1
423-3250
Paper Magazine Assembly
1
3
4
9F2648
9H3522
224-0891
Paper Shaft SU
1
Exploded View
MODEL NO.
ASSEMBLY NO.
412-0996
DATE
96.09.30
FX-2111 (USA)
10-15
o
2?5
v
.
>5-
\
DRAWING NO.
TITLE
External Appearance (1)
MODEL NO.
ASSEMBLY NO.
413-0849
DATE
94.10.07
FX-2111 (CE)
10-17
-
I
[
I
@
/Ft,
o
Cilil01-Ti
Itfir
TtAtEi
itttitin
tki
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ii tk* frimci sf
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ptititu d inttl«*Miii iifliaiiMn.
o
o
n
S
I 2»TI
5i
oo
1DDI
UISITITITT
5 I
;
CA R D I MA X
FX-Z11 J
IBID
'
11
oil:?:
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STAKT
PIT
OTf
V
A
STOP
Y
3J
v
0
0
!=.
ii
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-
si
I
o
a
.
2 6 0
nzr
DRAWING NO.
TITLE
External Appearance (2)
MODEL NO.
ASSEMBLY NO.
413-0927
DATE
96.01.24
FX-2111 (CE)
10-19
2
\
0
®
0
O
o
2_M8 Nut & Plain Washer
T
T
Key
No.
Parts Na
1
1L4475
2
1K1151A
1
Drawing Na
314-3471
Description
Fuse, 239500
2
GND Terminal (A)
1
TITLE
FX-2111 (CE)
Remarks
DRAWING NO.
AC Inlet Board
MODEL NO.
Q'ty
424-3443
DATE
ASSEMBLY NO.
PCB-6410
10-21
96.01.24
5
2-Binding
Screw M3x8
,
7
r
CD
2
.j
3
o
o
3
r
0
v.
\
6
y
y
y
0
y
y
y
4
y
y
y
y
y
0
y
2-Double Semus Screw M3x8
,
y
y
Key
No.
Parts No.
Drawing No.
Description
Q'ty
1
9F3424
PCB-6409 SAS
1
2
9F3419
PCB-6409 with ROM
1
3
1L4057
Fuse, TR-5 K1937, 3.15A
2
4
1U0231
Lithium Battery, CR-1/3N-FT-2-1
1
5
1E8631
Programmed ROM, FX-2111 (36-202)
1
6
9F3421
LCD Assembly
1
7
1L1709
LCD, NDM202A0O
1
8
6B8308
Spaeer, SP-15
2
9
6B9216
314-3602
Grounding Piece (D)
1
10
6B9217
314-3603
Shielding Finger (A)
1
684-2428
Remarks
TITLE
11
6B9218
314-3604
Shielding Finger (B)
1
DRAWING NO.
Main Board
MODEL NO.
ASSEMBLY NO.
FX-2111 (CE)
423-3444
DATE
96.01.24
10-23
5
Countersunk Screw M2x6
,
1
-
J6
-
-
J
1
4
2
3
Key
Parts No.
Drawing No.
1
6B8323
222-0889
2
9H0402
Na
3
6B8324A
4
6A5350
5
6B8325
Platen Roll
224-0313
Description
Paper Magazine
1
Platen Roll Assembly
1
Remarks
1
LF-740ZZ Bearing
2
Gear, 38A
1
DRAWING NO.
TITLE
Paper Magazine Assembly
MODEL NO.
Q'ty
ASSEMBLY NO.
423-3250
DATE
94.10.01
FX-2111
10-25
2
1
Key
Description
Q'ty
Parts Na
Drawing Na
1
6B8321
223-0892
Paper Shaft
1
2
6B8322
224-0893
Back Tension Spring
1
No.
DRAWING NO.
TITLE
Paper Shaft Assembly
MODEL NO.
Remarks
ASSEMBLY NO.
424-3251
DATE
94.10.07
FX-2111
10-27
2-Double Semus Screw M3x5
,
5
3
6
D
1
1
7
4
Setscrew, M3x3
A
A
)
a
«1
v
.
0
j
c
Key
Na
1 1
9
Double Semus Screw M3x4
,
C
2
D
3-Double Semus Screw, M3x8
Parts Na
Drawing Na
Description
Q'ty
1
9H3215
211-3447
Recorder Chassis SU
1
2
1M0385
434-4725
Motor Assembly
1
3
9H0617
Gear 38B Assembly
1
4
6B8320
Gear 38B
1
5
9H0812
Thermal Array Head Assembly
1
6
6B8316A
Thermal Array Head Mounting Plate
1
7
6B8317
Tension Coil Spring, DE511
1
224-0314
213-3448
Thermal Array Head Q56-F
1
PCB-6239 SMD, Sensor Board
1
313- 3461
Grounding Piece C SU
1
6B8395
314- 3465
Sensor Presser Sponge
1
6B8307
314-3464
Flexible Grounding Conductor
1
8
1W3006
684-2092
9
9F3289B
674-10490
10
9H3216
11
12
,
TITLE
Remarks
DRAWING NO.
Recorder Assembly
423-3252
Double Semus Screw,
M3x8
MODEL NO.
ASSEMBLY NO.
FX-2111
DATE
94.10.07
10-29
7
3
6
II
II
It
A
.St
.4>
0
2
4
Key
Na
Parts Na
Drawing Na
1
9F3355
2
9H3211C
111-6621
Description
Q'ty
Upper Case Assembly
1
Upper Case Assembly SU
1
3
1G9340A
684-2146
Key Panel
1
4
6B8305
114-6625
LCD Filter
1
5
5H9130
154-4575
Rated Power Label (C)
1
6
6B9171
114-6811
Lock Spring
1
7
5H9428
154-4694
CE Marking Label
1
Remarks
TITLE
DRAWING NO.
Upper Case Assembly
MODEL NO.
ASSEMBLY NO.
FX-2111 (CE)
423-3445
DATE
96.01.24
10-31
b
2-Double Semus Screw
,
M3x8
A
5
rJ5
A
A
6
c
4
<S>
Pasted
®
.
2
r
A
C
<s>
1/
OS
v
Key
No.
Parts Na
Description
Drawing Na
'
Q ty
1
9F3356
Lower Case Assembly (1)
1
2
9H3212D
111-6622
Lower Case Assembly SU
1
4
6B8327
314-3466
Battery Presser Sponge
1
5
6B8326
112-6624
Battery Cover
1
6
5H9131
154-4576
Fuse Labell
7
9E7293
Remarks
TITLE
Rating Label
Lower Case Assembly (1)
MODEL NO.
1
DRAWING NO.
ASSEMBLY NO.
FX-2111 (CE)
423-3446
DATE
96.01.24
10-33
7
Key
Parts Na
No.
1
Drawing Na
9F3356
3
9H3213A
313- 3459
4
1T1559
684-2157
Transformer FCP2222UT
5
9F3420
424- 3443
PCB-6410 Assembly
1
6
6B8306
314- 3463
Insulation Sheet
1
Insulation Cover
1
TM-166 No 12
1
2
4
Q'ty
Lower Case Assembly (1)
Lower Case Assembly (1)
Grounding Piece (A) SU
B
A
Description
423- 3446
1
1
,
A
7
6B91108A
8
6B6796
314-3601
.
A
Remarks
1
1
IB
3
O
5
ft
2
o
8
o
0
6
0
o
O
TITLE
DRAWING NO.
Lower Case Assembly (2)
MODEL NO.
ASSEMBLY NO.
FX-2111 (CE)
422-3447
DATE
96.01.24
10-35
2
4-Double Semus Screw M3x&
,
G
C
4
E
F
1
D
c
D
A
G
E
5
B
O
3
F
O
9
0
si fi'
6
/I
1
ii
i"
41
V
O
Key
Na
Parts Na
1
9F3354
3
1M0381
Q ty
Lower Case Assembly (2)
1
Recorder Assembly
1
684-2093
Thermal Array Head Cable
1
423-3444
PCB-6409 Assembly
1
422-3271
2
Description
Drawing Na
'
Remarks
TITLE
4
5
5H9138
154-4577
Lead Label (C)
1
6
5H5639
154-3574
Lithium Battery Label
1
DRAWING NO.
Lower Case Assembly (3)
MODEL NO.
ASSEMBLY NO.
FX-2111 (CE)
422-3448
DATE
96.01.24
10-37
2
1
3§5
it
r
5S>
"J
ir.>
r
re
A
z
3
Double Semus Screw, M3x8
B
4
A
B
si
'
4-Doubte
t'
Semus Screw M3x8
,
Key
Na
Parts No.
Drawing Na
Description
Q'ty
Remarks
TITLE
1
Lower Case Assembly (3)
1
2
Upper Case Assembly
1
Paper Magazine Assembly
1
Paper Shaft SU
1
3
9F2648
4
9H3522
224-0891
DRAWING NO.
Exploded View
MODEL NO.
ASSEMBLY NO.
FX-2111 (CE)
412-0928
DATE
96.01.24
10-39
FUKUDA DENSHI CO., LTD.
39-4, Hongo 3-chonne, Bunkyo-ku, Tokyo 113, Japan
Phone:(03)3815-2121
Fax: (03)5684-3791