MOBILETT XP family
Troubleshooting Guide
System
Troubleshooting Guide (X-ray)
Valid for
- MOBILETT XP
- MOBILETT XP Eco
- MOBILETT XP Hybrid
- MOBILETT XP Digital
- MOBILETT XP CR
Also replaces SPR8-230.840.60.01.02
2
Document Version / Disclaimer / Copyright
Document Version
Siemens reserves the right to change its products and services at any time.
In addition, manuals are subject to change without notice. The hardcopy documents cor‐
respond to the version at the time of system delivery and/or printout. Versions to hard‐
copy documentation are not automatically distributed.
Please contact your local Siemens office to order a current version or refer to our website
http://www.healthcare.siemens.com.
Disclaimer
Siemens provides this documentation “as is” without the assumption of any liability under
any theory of law.
The content described herein shall be used by qualified personnel who are employed by
Siemens or one of its affiliates or who are otherwise authorized by Siemens or its affiliates
to use such documents.
Assemblers and other persons who are not employed by or otherwise directly affiliated
with or authorized by Siemens or one of its affiliates are not entitled to use this documen‐
tation without prior written authority.
Copyright
“© Siemens, 2009” refers to the copyright of a Siemens entity such as:
Siemens Healthcare GmbH - Germany
Siemens Aktiengesellschaft - Germany
Siemens Shenzhen Magnetic Resonance Ltd. - China
Siemens Shanghai Medical Equipment Ltd. - China
Siemens Healthcare Private Ltd. - India
Siemens Medical Solutions USA Inc. - USA
Siemens Healthcare Diagnostics Inc. - USA and/or
Siemens Healthcare Diagnostics Products GmbH - Germany
MOBILETT XP family
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Table of Contents
1
General information
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
2
3
Required Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Required tools, test equipment and aids. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product-specific safety measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flow chart - troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.1 Chart 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.2 Chart 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.3 Chart 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.4 Chart 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.5 Chart 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.6 Chart 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
© Siemens, 2009
Restricted
18
19
20
21
22
24
25
25
26
27
28
Overviews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1 D916 (CPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.2 D927 (power supply). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.3 U1/U2 (voltage supply DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.4 U3/U4 (voltage supply only for XP Digital (imaging system)) . . . .
3.1.5 D972 (capacitor bank). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.6 D952, mat. no. 7024107 (charging unit capacitor group) . . . . . .
3.1.7 D952, mat. no. 7566974 (charging unit capacitor group) . . . . . .
3.1.8 D962, mat. no. 7566610 (kV - inverter board) . . . . . . . . . . . . . . .
3.1.9 D962, mat. no. 7567006 (kV - inverter board) . . . . . . . . . . . . . . .
3.1.10 D982 (battery charger) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.11 D102 (motor control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28
28
30
33
33
34
35
36
37
37
38
42
43
Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Function Check
5.1
5.2
5.3
5.4
5
6
7
8
11
12
13
16
18
Error messages
4.1
5
Performance of work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Special notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product-specific safety measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System overview - user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System overview - MOBILETT XP/Eco/Hybrid service . . . . . . . . . . . . . . . . . . .
System overview - MOBILETT XP Digital service . . . . . . . . . . . . . . . . . . . . . .
Test Points, Fuses and LEDs
3.1
4
5
General Information on Troubleshooting
2.1
2.2
2.3
2.4
3
43
60
Reading out the MOBILETT XP error memory . . . . . . . . . . . . . . . . . . . . . . . .
Checking the line voltage supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the intermediate circuit/capacitor bank. . . . . . . . . . . . . . . . . . . . .
Battery unit (Hybrid/Digital only): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents
4
5.4.1 Checking the D982 (battery charger and batteries) . . . . . . . . . . .
5.4.2 Checking the motor drive (only hybrid/digital) . . . . . . . . . . . . . . .
6
Basic functions
6.1
6.2
6.3
6.4
6.5
6.6
6.7
7
79
Switch-on mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unexpected shutdown of the PC (laptop) . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mode of operation of the capacitor bank . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mode of operation of the anode starter . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High-voltage circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.5.1 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.5.2 Sample high-voltage measurements. . . . . . . . . . . . . . . . . . . . . . .
Filament circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.6.1 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.6.2 Troubleshooting in the filament circuit. . . . . . . . . . . . . . . . . . . . .
6.6.3 Sample heating measurements. . . . . . . . . . . . . . . . . . . . . . . . . . .
mAs counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service programs
7.1
68
77
79
80
81
82
83
83
83
87
87
88
90
95
96
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.1 Activating service programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.2 Program 1 - formatting the capacitor bank . . . . . . . . . . . . . . . . . .
7.1.3 Program 2 - Exposure counter. . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4 Program 3 - Error log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.5 Program 4 - Deletion of the error log . . . . . . . . . . . . . . . . . . . . . .
7.1.6 Program 5 - changing the preferred values for kV & mAs . . . . . . .
7.1.7 Program 6 - Display of the maximum values (KV & mAs) . . . . . . .
7.1.8 Program 7 - setting the maximum main inverter frequency. . . . .
7.1.9 Program 8 - Anode starter - start/stop test . . . . . . . . . . . . . . . . . .
7.1.10 Program 9 - Filament current test . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.11 Program 10 - AutoOff on/off (Hybrid/Digital in battery mode) . . .
7.1.12 Program 11 - Exposure points . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.13 Program 12 - system type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.14 Program 13 - sound level of the keyboard . . . . . . . . . . . . . . . . . .
7.1.15 Program 14 - mAs counter configuration . . . . . . . . . . . . . . . . . . .
7.1.16 Program 15 - Low Consumption Mode (only available with Mo‐
bilett XP/Eco) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.17 Program 16 - Energy saving mode . . . . . . . . . . . . . . . . . . . . . . . .
7.1.18 Program 17 - Checking the inverter current in the main inverter
7.1.19 Program 18 - Switch-on time of the collimator lamp . . . . . . . . . .
96
96
96
97
97
97
98
98
98
99
99
99
99
100
100
100
101
102
102
103
8
Changes to Previous Version
104
9
List of Hazard IDs
105
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General information 1
1.1 Performance of work
Any technician duly assigned by the local Siemens office is authorized to perform mainte‐
nance and service work.
U
Certain tasks may also be performed by other technical personnel (e.g. the customer's
hospital technicians). These tasks are marked by the icon shown here.
In such cases it is absolutely necessary:
n
to observe all instructions in the text and graphics;
n
to use the specified tools, test equipment and aids.
You can also contact your national Siemens Uptime Service Center for support.
© Siemens, 2009
Restricted
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6
1 General information
1.2 Special notes
 DANGER
DANGER indicates an immediate danger that if disregarded will cause death or se‐
rious physical injury.

 WARNING
WARNING indicates a possible danger that if disregarded can cause death or seri‐
ous physical injury.

 CAUTION
CAUTION used with the safety alert symbol indicates a possible danger that if dis‐
regarded will or can lead to minor or moderate physical injury and/or damage to
property.

NOTICE
NOTICE used without the safety alert symbol indicates a possible danger that if
disregarded can or will lead to an undesirable outcome or state other than death,
physical injury or property damage.


NOTE is used to indicate information that explains the proper way to use devices or to
carry out a process, i.e., provides pointers and tips.
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General information 1
1.3 Icons
X
Warning about ionizing radiation or radioactive substances. Tests and adjustments that
must be performed with the radiation switched on are indicated by this radiation warning
icon.
.
V
Dangerous electrical voltage > 25 VAC or > 60 VDC.
C
Caution! General hazard warning.
E
ESD: Warning about electrostatically sensitive components.
P
U
Report icon. Used to indicate entries in certificates.
Certain tasks can also be performed by other technical personnel (e.g. the customer's hos‐
pital technicians).
Fig. 1:
© Siemens, 2009
Restricted
Certain sections apply only to the USA. These sections are marked with this icon.
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1 General information
1.4 Product-specific safety measures
 DANGER
While performing maintenance and service work
on the MOBILETT XP/Eco/Hybrid/Digital with the covers removed, it is possible to
come into contact with components under voltage.
Carelessness can result in death or serious bodily injury.
When performing maintenance and service work, the following is to be observed:
 the product-specific safety information contained in the technical documenta‐
tion,
 and the general safety information (TD00-000.860.01...).
 DANGER
Remove or install components only if:




- The system is switched off, and
- The capacitors are discharged, and
- The ESD guidelines are followed, and
- The batteries have been disconnected.
 DANGER
Releasing radiation:
 Checks and settings for which radiation must be released are to be marked
with the radiation warning symbol.
 Radiation protection measures are to be used.
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General information 1
 DANGER
To avoid electrical shock from components under voltage, also be aware that:
The capacitors of the capacitor bank can be electrically charged even when the
system is switched off and the power cable is disconnected!
In the case of an error, individual capacitors of the capacitor bank can still be elec‐
trically charged when disconnected from the charging circuit!
Disconnect the battery blocks in the XP Hybrid/Digital prior to maintenance and
service work!
Carelessness can result in death or serious bodily injury.
 Make sure that no parts or tools fall into the unit;
 Do not touch potentially dangerous components( Fig. 2 Page 9)
 If loose parts must be removed from the unit, use only insulated tools;
 Protect the work area so that no other persons are able touch the unit while
the covers are open or removed!
n
Switch the unit off before servicing or maintenance. Always disconnect the power
plug first.
n
XP Hybrid: Make sure that the main switch and the battery mode are switched off.
n
The capacitor bank discharges to < 40 V in approx. 15 minutes.
 The safety covers can be removed after this period has elapsed.
n
Prior to performing any work, it must be verified that areas with dangerous voltage
are voltage-free ( Fig. 2 Page 9).
Fig. 2: Locations with dangerous voltage
© Siemens, 2009
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1 General information
Explanation of ( Fig. 2 Page 9):
V
Covers and safety covers are removed:
Back:
CAUTION: DC voltage (440V) at the capacitor bank (D927)
Left:
CAUTION: DC voltage (440V) directly at the capacitor bank!
Right:
CAUTION: DC voltage (440V) directly at the capacitor bank!
CAUTION: AC voltage (> 100V ∼or > 60V ~ = half line voltage) at power sup‐
plies U1 and U2 as long as the power cord is connected.
Additionally for XP Hybrid/XP Digital:
CAUTION: DC voltage (300 V) from the battery block to PCB D982!
Always disconnect the battery plug from BK1-BK4.
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General information 1
1.5 System overview - user
Fig. 3: User overview_01
(1) Hanger for lead apron
(13) Castors
(2) Articulated arm
(14) Console with chassis
(3) Sensor for IR remote control (optional)
(15) IR remote control (optional)
(4) DAP display (optional)
(16) Holder for IR remote control (optional)
(5) Exposure switch (S27)
(17) Potential equalization connector
(6) Control panel and display field
(18) Transport safety device
(7) Transport handle
(19) Stand column
(8) Hand/parking brake handle
(20) Multileaf collimator
(9) Main switch
(21) DAP ionization chamber (optional)
(10) Power cord
(22) X-ray tube assembly
(11) Brake handle for cable winch
(23) Light localizer buttons (two sides)
(12) Cassette compartment
(24) Motor control (Hybrid)
© Siemens, 2009
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1 General information
1.6 Orientation
Fig. 4: Top view of system_01
System orientation to clarify the technical description

Abbreviations
Explanation
Uv
User view - back (User view)
L
Left side of unit (left)
R
Right side of unit (right)
F
Front (front)
fw
Front wheels (front wheels)
sa
Support arm (support arm)
T
Tube (single tank)
C
Multileaf collimator (collimator)
dd
DAP display (dose display)
These orientation indicators are used the same way in all technical documents. De‐
scriptions are always from the "forward travel" user view. Always reference these
indicators when communicating with third parties (e.g., USC/HSC).
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General information 1
1.7 System overview - MOBILETT XP/Eco/Hybrid service
Fig. 5: Top view_01
Fig. 6: Top view with D916, mat. no. 10272714
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1 General information
Common parts of MOBILETT XP, Eco and Hybrid
Abbreviations
Explanation
D908
User display and control
D916
CPU circuit board (starting with serial number 2056 for Mobilett XP
Digital the CPU is in the front in front of the D927).
D917
Galvanic separation for S27/DAP/Remote (for D916, material no.
7566909, D917 is no longer available)
Rcb
Remote control board (remote control option)
Fig. 7: Schematic overview of XP, Eco, Hybrid
Common parts of MOBILETT XP, Eco and Hybrid
Abbreviations
MOBILETT XP family
Explanation
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General information 1
SW1
Key switch, Power ON/OFF
Z1
Line filter
C1 (R1)
Capacitor for inverter with discharge resistor (front left side / not
shown here)
C2 (R2)
Starter capacitor with discharge resistor
R3 - 5 / R6
R3-R5 internal discharge resistor capacitor bank
(Front right)
R6 separate discharge resistor for Service
Capacitor block
12 x 10 mF capacitors, mounted with D972
K22
Main relay
U1
+5V / ± 15V power supply
U2
+24V power supply
D927
Power Supply
D952
Charging board capacitor bank (behind D927)
D962
kV inverter (behind D927)
D972
Capacitor bank board (behind D927)
Sa
Support arm adjusting spring
sw
Castors
Additional components for MOBILETT XP Hybrid only
SW2
Op. mode selector (battery / off / power)
D982
Battery charger
D102
Motor drive control
BK1 / BK2
Battery block, left
BK3 / BK4
Battery block, right
mr/ml
Motor right / motor left
Optional parts for MOBILETT XP; Eco and XP Hybrid (not pictured)
DAP chamber
Dose area product measuring chamber (mounted on the collima‐
tor)
D991
DAP adapter board (mounted in the collimator cover)
DAP display
DAP display board (mounted in the lower arm segment cover)
© Siemens, 2009
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1 General information
1.8 System overview - MOBILETT XP Digital service
Fig. 8: Schematic overview of XP Digital
MOBILETT XP Digital parts
Abbreviations
Explanation
D916/D919
CPU board/X-ray interface
D917
Galvanic separation for S27/DAP/Remote (for D916, material no.
7566909 or 10272714, D917 is no longer available).
Rcb
Remote control board (remote control option)
SW1
Key switch, power ON/OFF
Z1
Line filter
C1 (R1)
Capacitor for inverter with discharge resistor (front left side/not
shown here)
C2 (R2)
Starter capacitor with discharge resistor
R3-R5, R6 (X9)
Discharge resistor capacitor bank (front right side)
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General information 1
Capacitor bank
12 x 10 mF capacitors, mounted on D972
K22
Main relay
D909
X-ray display and keyboard
U1
+5V/± 15V power supply
U2
+24V power supply
D927
Power supply
D952
Capacitor bank charging board (behind D927)
D962
kV inverter (behind D927)
D972
Capacitor bank board (behind D927)
Sa
Support arm adjusting spring
lw/rw/sw
Support rollers and back wheels
D982
Battery charger
D102
Motor drive control
BK1/BK2
Battery block, left
BK3/BK4
Battery block, right
mr/ml
Motor right/motor left
CXDI PC
Laptop for the imaging system
CXDI detector
CXDI flat detector
Power box
Connecting unit between CXDI PC and CXDI detector
U3
DC converter 300V DC/24V DC
U4
Inverter 24V DC/220V AC
U5
Power supply CXDI PC (laptop)
Optional parts for MOBILETT XP Digital (not shown in illustration)
DAP chamber
Dose area product measuring chamber
D991
DAP adapter (inside the collimator cover)
DAP display
DAP display board (mounted in the lower arm segment cover)
© Siemens, 2009
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2 General Information on Troubleshooting
2.1 Required Documents
n
Operator Manual
SPR8-230.621...
n
Wiring Diagram
SPR8-230.621...
n
Instructions for installation and startup
SPR8-230.814...
n
Replacement of Parts
SPR8-230.841...
n
Disposal instructions
SPR8-230.861...
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General Information on Troubleshooting 2
2.2 Required tools, test equipment and aids
n
Standard service tool kit
n
Digital multimeter
n
2-channel storage oscilloscope with ± 2.5% accuracy
n
Ground wire test meter
n
Test device for Error 6 (problems with filament circuit) material number 10390704
n
For Mobilett XP Hybrid and Digital
Service tool for troubleshooting the motor drive material number 10272763
n
For Mobilett XP Digital Imaging System
Support for top cover material number 10390900
© Siemens, 2009
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20
2 General Information on Troubleshooting
2.3 Product-specific safety measures
Prior to beginning system work, be aware:
 DANGER
Danger of life-threatening electric shocks.
When performing maintenance or service work on the MOBILETT XP/Eco/Hybrid/
Digital with the covers removed, it is possible to come into contact with compo‐
nents under voltage.
Carelessness can result in death or serious bodily injury.
 Before starting work with open covers, secure the working area so that no
other persons can come into contact with the system.
 Remove safety covers only if absolutely necessary to perform a task. Then re‐
fit the cover correctly.
 Never leave the system unattended without safety covers. Do not employ any
helpers without technical instruction. THINK CAREFULLY BEFORE TOUCHING
ANY PART OF THE SYSTEM!
 When performing measurements and troubleshooting under voltage, comply
with the general safety regulations for such work.
 Use the discharge resistor to safely discharge non-discharged capacitors.
 Secure the system via the brake.
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General Information on Troubleshooting 2
2.4 Flow chart - troubleshooting

The following charts serve exclusively as guidelines for the procedure for testing the ele‐
ments or components. The associated work steps and safety measures are not described
in these charts.
© Siemens, 2009
Restricted
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2 General Information on Troubleshooting
Fig. 9: Troubleshooting_Procedure diagram_
2.4.1
Chart 1
Starting the "initialization phase":
In the case of initialization errors, the following points must be checked:
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General Information on Troubleshooting 2
n
Power socket, power supply available, e.g., 220 V AC
n
Only for XP Hybrid/XP Digital: Battery charge - battery status display available
n
Check power cable/plug - cable winch - line filter
n
Main switch SW1, relay K22
n
Check fuses F7/F8 on board D927
n
Hybrid only: Check operating mode switch SW2
n
Hybrid/Digital only: Check fuses F1 and F2 on battery charger D982.
n
Check power supply U2:
n
n
-
In the case of XP (Eco): the input voltage of power supply U2 = power input voltage
(AC).
-
In the case of XP Hybrid:
the input voltage of power supply U2 = power input voltage (AC) or = battery volt‐
age (DC) (depending on the position of operating mode switch SW2)
-
In the case of XP Digital:
the input voltage of power supply U2 = battery voltage (DC)
-
Check fuse F1 of power supply U2
Check the cable connection between power supply U2 and D927
Check fuse F3 of board D927
Check the connections between D927 and D916
(24 V DC: D916 plug X2 pin 5-7 & pin 9-8)
Check power supply U1:
-
In the case of XP (Eco): the input voltage of power supply U1 = power input voltage
(AC)
-
In the case of XP Hybrid:
the input voltage of power supply U1 = power input voltage (AC) or = battery volt‐
age (DC) (depending on the position of operating mode switch SW2)
-
In the case of XP Digital:
the input voltage of power supply U1 = battery voltage (DC)
-
Check fuse F1 of power supply U1
Check the cable connection between power supply U2 and D916
D916 X15 pin 4-3 +5 V DC; X15 pin 5-6 +15 V and X15 pin 6-7 -15 V DC
Check power supply U3 (only for XP Digital):
the input voltage of power supply U3 = battery voltage (DC), and the output voltage is
24 V (DC)
n
Check power supply U4 (only for XP Digital):
the input voltage of power supply U4 = the output voltage of power supply U3, 24 V
(DC), the output voltage is 220 V (AC), power supply for CXDI PC and the touchscreen
display
n
© Siemens, 2009
Restricted
D916 may be defective, check D916 (see chart 2)
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2 General Information on Troubleshooting
2.4.2
Chart 2
Initialization phase of D916 (CPU):
The system starts in the normal operating mode.
Initialization is correctly completed if the system displays the default kV and mAs values in
user mode.
If initialization is interrupted, the following error messages may be displayed:
2.4.2.1

ERR 0 voltage error of + 5 Vcc
ERR 92 RAM error
ERR 93 voltage error of +15 Vcc
ERR 96 kV converter error
ERR 97 mA converter error
ERR 98 Jh converter error
Checking D916 in the service mode
Radiation cannot be released in the service mode.
Switch on the service mode on D916:
n
Move switch SW2B to position 2 (service)
n
Activate SW3
 The service mode starts
Initialization phase of D916:
- Initialization of the microcontroller register
- Initialization of the periphery
- Variable initialization
- Internal A/D channel check
- Start of the internal hardware monitoring
- RAM value check
Initialization has been completed correctly when "Pr 1" is shown on the display.
If initialization is interrupted, D916 may be defective.
The following error messages are possible:
-
MOBILETT XP family
ERR 92 RAM error
ERR 93 voltage error of +15 Vcc
ERR 96 kV converter error
ERR 97 mA converter error
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General Information on Troubleshooting 2
2.4.3
ERR 98 Jh converter error
Chart 3
"Standby operation"
The following functions are checked:
-
Internal hardware monitoring on D916
Monitoring of the supply voltage
Monitoring of the oil pressure and temperature lines
Monitoring of the short-circuit inverter lines (main inverter/filament inverter)
Monitoring of the capacitor voltage
Controlling of the capacitor charger
Hybrid/Digital only: Monitoring the battery voltage
kV and mAs can be selected via the keyboard (only for XP Digital in the manual
mode).
If the above functions are correct, exposure switch S27 can be set to "exposure prepara‐
tion".
On failure of the above functions, the standby mode is interrupted. The system must be
restarted.
The following error messages are possible:
2.4.4
ERR 1 error value of +15 V
ERR 3 oil pressure high or tube overheated
ERR 4 static short-circuit at the main inverter
ERR 6 Ih < I preheat (filament current error)
ERR 7 Ih > I preheat (filament current error)
ERR 8 static kV measured value <> 0
ERR 9 static mA measured value <> 0
ERR 10 battery voltage <= 125 V or defect in a battery pack
Err 11 Overvoltage at capacitor bank or fault in capacitor charger (D952)
ERR 12 short-circuit signal at the filament inverter
ERR 13 low voltage at the capacitor bank
ERR 14 battery/charger switching error
ERR 15 static short-circuit at the filament inverter
Chart 4
"Preparation" for exposure release
The following functions are checked and/or performed:
-
© Siemens, 2009
Restricted
Query of all standby functions (see chart 3)
Start of rotating anode rotation
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2 General Information on Troubleshooting
-
Start of preheating (pushing) of tube filament heating
Start of monitoring of the filament circuit
Start of monitoring of the exposure switch
If the above functions are correct, the "conclude preparation" function follows (see chart
5).
Preparation is interrupted if one of these functions fails.
The following error messages are possible:
2.4.5
ERR 22 short-circuit at the filament inverter
ERR 23 limitation of the filament current
ERR 24 anode does not rotate
ERR 25 preparation > 20 seconds
ERR 28 short-circuit at the starter
ERR 41 exposure not completed
Chart 5
"Conclude preparation"
The following functions are checked and/or performed:
-
Query S27 in the "Preparation" position
Query of the filament inverter
Query of the filament current / kV/mAs preselection
Query of the rotating anode starter
Query of the anode rotation (current measurement of the stator windings)
Start of the "maximum preparation time" function (preheating max. 20 sec)
Acoustic signal 2.5 sec after the "preparation" start
If the above functions are correct, an "exposure" can be released via S27 within 20 sec
after the acoustic signal.
Preparation is interrupted if one of these functions fails.
The following error messages are possible:
-
MOBILETT XP family
ERR 22 short-circuit at the filament inverter
ERR 23 limitation of the filament current
ERR 24 anode does not rotate
ERR 25 preparation > 20 seconds
ERR 28 short-circuit in the starter
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General Information on Troubleshooting 2
2.4.6
ERR 41 exposure not completed
Chart 6
"Exposure release"
The following functions are checked and/or performed:
-
Starting of the HV inverter
Monitoring and controlling of the actual tube current
Monitoring and controlling of the high-voltage
Change after exposure into standby mode
Anode braking
For the Hybrid: when motor movement is detected, the exposure release is blocked.
If the exposure is interrupted, the following error messages are possible:
-
© Siemens, 2009
Restricted
ERR 31 kV limitation
ERR 34 tube current limitation
ERR 35 short-circuit at the main inverter
ERR 36 short-circuit at the filament inverter
ERR 37 error in the kV control loop
ERR 38 error in the mA control loop
ERR 39 timeout "t-max exposure"
ERR 41 exposure not completed
ERR 42 filament current exceeds permissible limit
A defective release switch or low battery voltage can also lead to the interruption of
an exposure.
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3 Test Points, Fuses and LEDs
3.1 Overviews
3.1.1
3.1.1.1
D916 (CPU)
LEDs, potentiometer, switch
Name
Function / information
Value / comment
V24
Flashes when software is running
n.a.
P1
Adjustment of the mAs counter
Only in factory (do not change)
P3
Adjustment of the max. frequency
of the filament inverter
75 kHz ± 5 kHz
(Test point TP - FC1)
(See the "Filament circuit" section)
P4
Adjustment of the max. frequency
of the main inverter
Service program 7:
50 kHz ± 0.5 kHz
(Test point TP - FC2)
P5
Preheating adjustment
Presetting, test point TP - 1: 7.5 kHz
± 1kHz
Setting, test point TP - JR
SW2B
Mode selection:
Normal mode: Position 1
To change the mode, switch SW2B, Service mode: Position 2
switch the system off and on again,
or press reset button SW3.
SW3
Reset button
n.a.
Fig. 10: CPU D916
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Test Points, Fuses and LEDs 3
Fig. 11: D916, mat. number 10272714
3.1.1.2
Test points D916 (CPU)
SP
Name
Function / information
Test ratio
1
GND
0V signal (ground)
n.a.
2
GND
0V signal (ground)
n.a.
3
KVN
kV actual, negative
1 V ^ 10 kV
4
KVP
kV actual, positive
1 V ^ 10 kV
5
KV
kV actual, total
1 V ^ 30 kV
6
JR
mA actual, tube current (mA)
1 V ^ 100 mA
7
I
Primary resonant filament current (can be meas‐
ured only with the oscilloscope)
1V^1A
8
IH
Actual effective filament current
1 V ^ 1.2 A
9
SWT
Main inverter control circuit (high = kV actual >
70%)
n.a.
10
F1
mAs integration (see service program 14)
n.a.
11
TEMP
Single tank temperature (analog/neg. coefficient)
> 2 V = > 60˚C
12
VR
+5 V - DC, U1
± 0,01
13
VC
Capacitor bank voltage
1 V ^ 100 V
14
SCM
Main inverter short-circuit (high = error, e.g.: ERR
22)
n.a.
15
SCH
Filament inverter short-circuit (high = error, e.g.:
ERR 36)
n.a.
16
JIM
Overcurrent error (filament or tube current), (high n.a.
= error, e.g.: ERR 23/ERR 42)
17
KVM
Overvoltage error (+/- kV), (high = error, e.g.: ERR
31)
n.a.
18
KVC
Main inverter resonant current
1 V ^ 50 A
© Siemens, 2009
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3 Test Points, Fuses and LEDs
3.1.2
3.1.2.1
19
VSA
Not used
n.a.
20
KVS
kV nominal (kV)
1 V ^ 30 kV
21
JRS
Nominal tube current (mA)
1 V ^ 100 mA
22
IHS
Nominal effective filament current
1V^2A
23
I1
Motor current (stator winding 1)
n.a.
24
I2
Motor current (stator winding 2)
n.a.
25
FC1
Filament inverter (kHz)
n.a.
26
FC2
Main inverter (kHz)
n.a.
27
EXP
Main inverter status (high = standby, low = expo‐
sure in progress)
n.a.
28
ERAR
Stator start signal (high = error, e.g.: ERR 28)
n.a.
D927 (power supply)
D927 (mat. no. 7566743), potentiometer, LEDs
Name
Function / information
Value
P1
Collimator voltage control
Setting at >180 lux in light field ^ approx.
25 V at connection X7
3.1.2.2
V7
+15 V DC present
LED "on"
V8
+24 V DC activated
LED “on” = U2 “on”, line voltage present
V18
Filament circuit
LED "on" = intermediate circuit voltage
present
V26
Line voltage/battery voltage
present
LED "on"
V63, V53 Rotating anode starter
LED "on" = intermediate circuit voltage
present
V54
LED "on" = supply voltage present
Light localizer
D927 (mat. no. 7566925), potentiometer, LEDs
Name
Function / information
Value
P1
Collimator voltage control
Setting at >180 lux in light field ^ approx.
25 V at connection X7
V7
MOBILETT XP family
+15 V DC present
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Test Points, Fuses and LEDs 3
V8
+24 V DC activated
V18, V26 Filament circuit
LED "on" = intermediate circuit voltage
present (450 V)
V63, V53 Rotating anode starter
LED "on" = intermediate circuit voltage
present (450 V)
V59
LED "on" = supply voltage present
Light localizer
V40, V41 Line voltage/battery voltage
present
3.1.2.3
LED “on” = U2 “on”, line voltage present
450 V present
D927 (mat. no. 10272717), potentiometer, LEDs
Name
Function / information
Value
P1
Collimator voltage control
Setting at >180 lux in light field ^ approxi‐
mately
25 V at connection X7
V7
+15 V DC present
LED on
V8
+ 24 V DC activated
LED “on” = U2 “on”, line voltage present
V18, V26 Filament circuit
LED "on" = intermediate circuit voltage
present (450 V)
V63, V53 Rotating anode starter
LED "on" = intermediate circuit voltage
present (450 V)
V59
Light localizer
LED "on" = supply voltage present
V1
Line voltage present, and F7
& F8 are OK
450 V present
V79
Power switch "on" and F6 is
OK
450 V present
V40, V41 Line voltage / battery voltage 450 V present
present
3.1.2.4
Fuses
Fuse
Value
Comments
F3
1 A (250V~/ slow)
Switch-on circuit
F5
6 A (500 V DC/ fast)
Capacitor bank intermediate circuit
F6
20 A (500 V DC/ fast)
Capacitor charger
© Siemens, 2009
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3 Test Points, Fuses and LEDs
F7
10 A (250V~/ slow)
Line voltage
F8
10 A (250V~/ slow)
Line voltage
Fig. 12: D927
(1) F5
(2) X3
(3) F7/F8
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Test Points, Fuses and LEDs 3
Fig. 13: D927, mat. no. 7566925
3.1.3
3.1.3.1
3.1.4
3.1.4.1
U1/U2 (voltage supply DC)
Test points
Name
Function / information
U1
+5 V & +/-15 V (output: K2)
U2
+24 V (output: K1)
U3/U4 (voltage supply only for XP Digital (imaging system))
Test points
Name
Function / information
U3
+300 V DC/ +24 V DC
U4
+ 24 V/ 110 V AC
© Siemens, 2009
Restricted
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3 Test Points, Fuses and LEDs
3.1.5
3.1.5.1
D972 (capacitor bank)
LEDs
Name
Function / information
Value
V1-12
Charge voltage C1-C12 (10 mF) LED "ON" (yellow), charge voltage > 40 V
Fig. 14: Board D972 capacitor block
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Test Points, Fuses and LEDs 3
Fig. 15: D972 and D952 new version
3.1.5.2
3.1.6
3.1.6.1
Fuses
Fuse
Value
Comments
F1-F12
20 A (500 V DC/ fast)
Capacitors C1-C12
F13
20 A (500 V DC/ fast)
Capacitor bank input
F14
100 A (500 V DC/super fast)
Capacitor bank output
D952, mat. no. 7024107 (charging unit capacitor group)
LEDs, fuse
Name
Function / information
Value
V25
Input voltage ok
LED "on"
(Mains battery)
V30
Output voltage ok
LED "on"
F1
Input fuse for D927
10 A (250 V~/slow)
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3 Test Points, Fuses and LEDs
Fig. 16: Board D952 (view with capacitor bank dismantled)
3.1.7
3.1.7.1
D952, mat. no. 7566974 (charging unit capacitor group)
LEDs, fuse
Name
Function / information
Value
V IN (V8)
Input voltage OK
LED "on"
(Mains battery)
V DC (V1)
Output voltage OK
LED "on"
F1
Input fuse for D927
15 A (250 V~/slow)
CBF (V30)
Charging unit error
Replace D952
CBC (V31)
Charge charging unit
LED "on"
CBE (V32)
Charging unit OK
LED "on"
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Test Points, Fuses and LEDs 3
Fig. 17: D952 detail
Fig. 18: Capacitor bank
3.1.8
D962, mat. no. 7566610 (kV - inverter board)
The kV inverter does not include any displays, fuses, or test points relevant to trouble‐
shooting.
3.1.9
D962, mat. no. 7567006 (kV - inverter board)
Name
Function / information
Value
V5
Fuse F14 on D972
LED "On" F14 is OK
© Siemens, 2009
Restricted
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3 Test Points, Fuses and LEDs
3.1.10
D982 (battery charger)
Battery charger D982 comprises 2 charging units
Charging unit 1 of D982 supplies left battery blocks BK1 & BK2. Charging unit 2 of D982
supplies right battery blocks BK3 & BK4.
Fig. 19: D982 Battery charger__
3.1.10.1
3.1.10.2
Fuses D982
Fuse
Function / information
Value
F1-F2
Input alternating current voltage
6 A (230 V~/slow)
F3
Charger 2 - output voltage
6 A (500 V DC/ fast)
F4
Charger 1 - output voltage
6 A (500 V DC/ fast)
F5
300 V output to capacitor block
40 A (500 V DC/fast)
LEDs and potentiometer for charging unit 1 (for D982 mat. no. 8390234 or 7024461)
The following table applies for charging operation (power line connected).
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Test Points, Fuses and LEDs 3
Charger 1 (charges BK1 and BK2)
3.1.10.3
Name
Function / information
Value
V46
Trickle charge (Ubat >80V<120V)
LED on
V42
Charging process (Ubat >120V<170V)
LED on
V82+V46+V42
Batteries completely charged (power
line disconnected)
All LEDs off
V85
Floating
LED on
V82+V46
Defective batteries in BK1 or BK2; or
fuse F4 blew
LED on
V33
Charger 1 is working; voltage present
at output (approx. 175 V max.)
LED on
P9
Output voltage (BK1 & BK2)
Factory-only setting
LEDs and potentiometer for charging unit 2 (for D982 mat. no. 8390234 or 7024461)
The following table applies for charging operation (power line connected).
Charger 2 (charges BK3 and BK4)
Name
Function / information
Value
V40
Trickle charge (Ubat >80V<120V)
LED on
V39
Charging process (Ubat >120V<170V)
LED on
V80+V40+V39
Batteries fully charged
All LEDs off
(Power line disconnected)
3.1.10.4
V84
Floating
LED on
V80+V40
Defective batteries in BK1 or BK2; or
fuse F3 blew
LED on
V34
Charger 2 is working; voltage present
at output (approx. 175 V max.)
LED on
P7
Output voltage (BK3 & BK4)
Factory-only setting
LEDs and potentiometer for charging unit 1 (for D982 mat. no. 10130442, 7567071,
or 10272759)
The following table applies for charging operation (power line connected).
Charger 1 (charges BK1 and BK2)
Name
Function / information
Value
V38
Trickle charge (Ubat >80V<120V)
LED "on"
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3 Test Points, Fuses and LEDs
3.1.10.5
V39
Charging process (Ubat >120V<170V)
LED "on"
V37+V38+V39
Batteries completely charged (power
line disconnected)
all LEDs "off"
V40
Floating
LED "on"
V37+V38
Defective batteries in BK1 or BK2; or
fuse F4 blew
LED "on"
V8
Charger 1 in operation; voltage
present at output (approx. 175 V
max.)
LED "on"
P9
Output voltage (BK1 & BK2)
Factory-only setting
LEDs and potentiometer for charging unit 2 (for D982 mat. no. 10130442, 7567071,
or 10272759)
The following table applies for charging operation (power line connected).
Charger 2 (charges BK3 and BK4)
Name
Function / information
Value
V42
Trickle charge (Ubat >80V<120V)
LED "on"
V43
Charging process (Ubat >120V<170V)
LED "on"
V41+V42+V43
Batteries fully charged
all LEDs "off"
(Power line disconnected)
3.1.10.6
V44
Floating
LED "on"
V41+V42
Defective batteries in BK3 or BK4; or
fuse F3 blew
LED "on"
V9
Charger 2 in operation; voltage
present at output (approx. 175 V
max.)
LED "on"
P7
Output voltage (BK3 & BK4)
Factory-only setting
LEDs and potentiometer of charging units (for D982 mat. no. 10272764)
Battery charger D982 version V6
The following table applies for charging operation (power line connected).
Charging units (charge BK1, BK2, BK3, and BK4)
Name
Function / information
Value
V20( 2/Fig. 20
Page 41)
Board D982 OK
Green LED on
V20
Fuses F3, F4 possibly defective
Green LED flashes
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Test Points, Fuses and LEDs 3
V20
If V63 illuminates and V20 is off ->
D982 is defective.
Green LED off
V63( 1/Fig. 20
Page 41)
PFC stage OK, input voltage available
LED on
V8( 3/Fig. 20 Page 41)
Charging unit 1 in operation; voltage
present at output (approx. 175 V
max.)
LED on
V9( 4/Fig. 20 Page 41)
Charging unit 2 in operation; voltage
present at output (approx. 175 V
max.)
LED on
P9
Output voltage (BK1 & BK2)
Factory-only set‐
ting
P7
Output voltage (BK3 & BK4)
Factory-only set‐
ting
Fig. 20: D982 V6
3
1
2
4
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3 Test Points, Fuses and LEDs
3.1.11
3.1.11.1
D102 (motor control)
Potentiometer, fuse
Name
Function / information
Value
P1
Speed setting
Factory-only setting
F1
Input 300 V (DC)
3.15 A fast
Fig. 21: D102 (motor control)
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Error messages 4
4.1 Error messages


The error messages described below are generator-specific and appear on the kV-mAs
display when an error occurs. The Mobilett XP Digital has an additional series of error
messages (Fatal, Alert, Error, Warning and Attention), that appear on the display when
errors occur. These errors are identified with a dash and a code (e.g.: -100). A descrip‐
tion of these error codes can be found in the document "Troubleshooting Guide, Image
System, SPR8-230.840.30.xx.xx."
MOBILETT XP CR:
Error messages for the "Copy Reader" imaging system are described in a separate docu‐
ment SPR8-230.840.99..., on the CB-DOC intranet under Service/CR-Reader/Trouble‐
shooting Guide.
USE 01
User message 01 (only XP Digital)
System
status:
Explanation: If the exposure time from the digital application software (pa‐
rameter kV, mAs, mA) is < 1 sec but the calculated exposure time of the
generator is > 1 sec, the USE 01 message is displayed.
Action:
n
Due to a possible faulty exposure, the mA value in the digital application
software is to be reduced.
Standby
USE 02
User message 02 (only XP Digital)
System
status:
Explanation: If the DAP value was set to Auto (see Service tools --> DAP
Mode), the CPU expects a dose value after an acquisition. USE 02 is dis‐
played if the value is not available. This can also occur after replacement of
the CPU (with mat. no. 10272714).
Action:
n
If no DAP is available, the DAP function can be changed from "Auto" to
"Manual" in the service mode.
After ac‐
quisition
Service tools-->Main Menu-->CXDI Configuration-->DAP Mode
Pause
Message: "Pause"
System
status:
Explanation: This message appears when the temperature of the capacitor
charging circuit board has exceeded a defined value (caused by a number of
exposures taken within a short time).
Action:
n
Wait until the temperature has dropped.
Standby
n
© Siemens, 2009
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Error: If this message ("Pause") does not go away or if it appears immedi‐
ately after the unit is switched on, the D952 board may need to be re‐
placed.
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4 Error messages
ERR 0
Error value + 5 V
System
status:
Explanation: D916 (CPU) faulty recording of +5V DC when system is switch‐
ed on. System cannot be switched on.
Action:
n
Check D916 (CPU). X15. Voltage "+ 5V" from U1 power supply. The volt‐
age must have a value between 5.15 and 5.25 volts. If not, adjust using
a potentiometer.
Standby
Fig. 22: Power supply
1
ERR 1
Error value +15 V
System
status:
Explanation: D916 (CPU) faulty recording of +15 V DC. System cannot be
switched on.
Action:
n
Check D916 (CPU). X15.5-6 voltage “+15 V” from power supply U1.
Standby
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Error messages 4
ERR 3
Oil pressure too high or tube too hot
System
mode:
Explanation: Oil pressure switch or temperature sensor of the single tank ac‐
tivated.
Action:
n
Check the connections and cable between D916 (CPU X8.9/X8.8 and oil
pressure switch/temperature switch on the single tank (K2).
Standby
n
n
Have the leads become disconnected from the oil pressure switch or the
temperature switch? If the leads on the oil pressure switch are defective
(torn off), they can be bypassed. The system is designed to reliably pre‐
vent oil leaks via other mechanisms. Bypassing the oil pressure switch
does not pose any increased risk to customers, patients or service per‐
sonnel.
Allow single tank to cool prior to check.
ERR 4
Static short-circuit at main inverter D962
System
mode:
Explanation: D916 (CPU) detected main inverter short-circuit (D962).
Action:
n
Check D962: Switch system off, wait 15 minutes (capacitor discharge
time!), disconnect the cable connection at C1, switch the system on
again.
Standby
-
If ERR 4 is displayed again, D962 must be replaced.
If ERR 4 is not displayed again, the problem is in the single tank, capac‐
itor C1, or the cable connection/plug to the single tank.
ERR 6
Ih < I preheat (filament current error)
System
mode:
Explanation: The instantaneous filament current (test point IH) is less than
the specified nominal value (test point IHS) of the microcontoller (D916).
Standby
Action: for troubleshooting Err 6, the procedure shown in flow chart "Err 6"
( Fig. 23 Page 46) is recommended. Also see description in chapter: "Fila‐
ment current circuit".( Filament circuit / Page 87). Also see
( Fig. 51 Page 89).
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4 Error messages
Fig. 23: Error 6
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Error messages 4
ERR 7
Ih > I preheat (filament current error)
System
mode:
Explanation: The instantaneous filament current (test point IH) is greater
than the specified nominal value (test point IHS) of the microcontoller
(D916).
Action:
n
Check the resonant filament current (D916; TP-I), the filament current
(D916, TP-IH), and the nominal filament current value (D916, TP-IHS). IH
and IHS must be the same. (Further information is available in the "Fila‐
ment circuit" section of this document).
Standby
Possible causes: D927; D916.
Rare causes: Defective cable/contacts between D927 (X5) and the single
tank; fuse F5 blown on D927; ribbon cable X11 (D927-D916); single tank
(heating coil, filament transformer).
ERR 8
Static kV measured value <> 0
System
mode:
Declaration: D916 detects actual kV error.
Action:
n
Check the cable connection of measurement data log D907, the single
tank, and D916.X8 (CPU).
Standby
Possible causes: Defective single tank, defective cable, defective D916
(CPU).
ERR 9
Static kV measured value (tube current) <> 0
System
mode:
Explanation: A tube current is detected during stand-by. D916 (CPU) detects
actual mA error.
Action:
n
Check the cable connection between measurement data log D907 (the
single tank) and D916.X8 (CPU).
Standby
Possible causes: Cable connection between the single tank and D916 (X8);
"ground connection" from the system to the single tank is defective; D916;
D907; single tank.
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4 Error messages
ERR 10
Voltage in battery block too low
System
mode:
Explanation: D916 (CPU) detects via D982 a battery block with a voltage <=
125V or a defect in a battery pack.
Action:
n
Check the battery voltage for each battery block (left or right), nominal
value > 125 V, charge battery if necessary (also see ( Battery unit (Hy‐
brid/Digital only): / Page 66)).
n
Check fuse F5 on D982 (battery block output).
Standby
n
Check fuse F3 on D982 (charger 1).
n
Check fuse F4 on D982 (charger 2).
n
Check the cable connection between the battery packs and D982.
n
Check the cable/contacts between the individual batteries.
ERR 11
Overvoltage at capacitor bank or fault in capacitor charger (D952)
System
mode:
Explanation: D916 (CPU) detects overvoltage (> 460 V) at the capacitor bank
or an error at D952.
Standby
Action: for troubleshooting Err 11, the procedure shown in flow chart "Ca‐
pacitor voltage (Flow diagram A ( Fig. 24 Page 49) )" is recommended.
Also see the description in chapter: "Capacitor bank".( Mode of operation
of the capacitor bank / Page 81).
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Error messages 4
Fig. 24: Flow chart A
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4 Error messages
ERR 12
Short-circuit signal at the filament inverter (D927)
System
mode:
Explanation: Permanent short-circuit in the filament inverter during stand-by
(test point D916, TP SCH).
Action:
n
Check test point TP - SCH on D916 (CPU) (high = error, short-circuit is de‐
tected).
Standby
n
n
Check the cable connection between D916.X11 (CPU) and board D927.
Check D916 (CPU): Switch off the system, disconnect plug X5 of board
D927, switch the system on again.
 If ERR 12 continues to be displayed, D916 is to be replaced.
 If ERR 6 is displayed, D916 is ready for operation.
n
Possible defects: Cable connection X11 (D927-D916); D916 (CPU); D927.
ERR 13
Capacitor bank voltage too low
System
mode:
Explanation: D916 (CPU) detects a capacitor bank voltage that is too low.
Standby
Action: for troubleshooting Err 13, the procedure shown in flow chart "Ca‐
pacitor voltage (Flow diagram A) ( Fig. 24 Page 49) " is recommended. Also
see the description in chapter: "Capacitor bank" ( Mode of operation of the
capacitor bank / Page 81).
ERR 14
Power switch error on D982
System
mode:
Explanation: D916 (CPU) detects an error in the power switch located on
board D982 (not a battery error).
Action:
n
Check cable connections D982 X2-D916 (CPU) X2.
Standby
n
D982 defective.
Possible defects: D982, D916 (CPU)
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Error messages 4
ERR 15
Static short-circuit at the filament inverter
System
mode:
Explanation: Noise in the filament inverter short-circuit signal (test point
D916, TP SCH) during stand-by.
Action:
n
Check test point TP - SCH on D916 (CPU) (high = error, short-circuit is de‐
tected).
Standby
Check D927: Switch off the system, disconnect cable X5 of board D927,
switch the system on again.
n
 If ERR 6 is displayed, D927 and D916 are ready for operation.
 If ERR 15 continues to be displayed, check D916 (see ERR 12) or
replace D927.
Possible defects: Cable connection X11 (D927-D916); D916 (CPU); D927.
ERR 22
Short-circuit at the filament inverter
System
mode:
Explanation: Short-circuit in the filament inverter during "preparation" (test
point D916, TP SCH).
Action:
Preparation n Check test point TP - SCH on D916 (CPU) (high = error, short-circuit is
detected).
n
Check D927: Switch off the system, disconnect cable X5 of board
D927, switch the system on again.
 If ERR 6 is displayed, D927 and D916 are ready for operation.
 If ERR 22 continues to be displayed, check D916 (see ERR 12) or
replace D927.
Possible defects: D916; D927.
ERR 23
Filament current exceeds permissible limit
System
mode:
Explanation: D916 (CPU) detects that the filament current exceeds the per‐
missible limit during "preparation" (test point D916, TP JIM).
Action:
Preparation n Check test point TP - JIM on D916 (CPU) (high = error).
n
Check the filament current values for the preparation phase. (Possibly
too high or too low). Adjust potentiometer P5 on D916 (CPU).
Possible defects: D916; D907.
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4 Error messages
ERR 24
Anode does not rotate
System
mode:
Explanation: D916 (CPU) detects no or insufficient anode rotation in the
start phase.
Action:
Preparation n Check fuse F5 on board D927.
ERR 25
n
Check fuse F6 on board D927.
n
Check the cable connection between the single tank and D927.
n
Check the cable connections to phase shift capacitor C2.
n
Check the cable connection between boards D927 X11 and D916 X11.
n
Measure stator winding TP - I1 and I2 on D916. (Also see ERR 28)
Timeout in preparation
System
mode:
Explanation: D916 (CPU) detects a timeout during preparation when the
preparation button is pressed for longer than 20 seconds without exposure
release.
Preparation Action:
n
If this error occurs without the hand switch having been pressed longer
than 20 seconds, test the connection between the CPU and hand
switch. The hand switch or D916 may be defective.
ERR 28
Short-circuit at the starter
System
mode:
Explanation: D916 (CPU) detects a short-circuit of the starter.
Action:
n
Check phase shift capacitor (C2).
Preparation
n
n
Check the resistance at the stator winding (between X6-3 and X6-1 ap‐
prox. 5 Ohms; between X6-3 and X6-5 approx. 9 Ohms) in the switch‐
ed-off state.
Check the FW status (J38) on D916. FW must be:
MXP/Hybrid >= VC00C
MXP Eco >= VC00C
MXP CR >= VC00C
MXP Digital >= VC00D
Possible defects: D927, C2, cable connection to the single tank, single
tank.
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Error messages 4
ERR 31
kV exceeds permissible limit
System
mode:
Explanation: D916 (CPU) detects max. kV.
Action:
n
Check the test point "overvoltage error" TP - KVM on D916 (CPU), (high
= error) after exposure.
Exposure
n
n
n
Check the cable connection between the single tank and D916.
Check the highest frequency of the main inverter, test point FC2 on
D916 (CPU).
Check the filament current.
Possible defects: D916, D907; single tank.
ERR 32
Asymmetical kVP and kVN (only with FW versions VC00A and higher)
System
mode:
Explanation: error in single tank or measuring loop
Action:
n
check kV measuring loop
exposure
n
ERR 34
Tube current exceeds permissible limit
System
mode:
Explanation: D916 (CPU) detects IJRmax. during an exposure (test point
D916, TP JIM).
Action:
n
Check test point TP - JIM on D916 (CPU), (high = error).
Exposure
n
check single tank and D916.
Check the filament current with preparation. Set potentiometer P5 (fila‐
ment current during preparation).
 Sporadic error message - check the highest frequency of the fila‐
ment inverter.
Possible defects: D916, D907.
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4 Error messages
ERR 35
Short-circuit at the main inverter
System
mode:
Explanation: D916 (CPU) detects a main inverter short-circuit.
Action:
n
Check test point TP - SCM on D916 (CPU) after exposure, (high = error).
Exposure
n
ERR 35 with exposures in all kV ranges indicates a probable single tank
defect.
n
Check the cable connections between D916 and D962 (X20).
n
Check the cable connections between D962 and the single tank (U - V).
n
Check C1.
n
Check the grounding cable connection between D972 and the device
frame (on the voltage supply side U1/U2).
ERR 36
Short-circuit at the filament inverter
System
mode:
Explanation: D916 (CPU) detects a short-circuit at the filament inverter dur‐
ing an exposure.
Action:
n
Check test point TP - SCH on D916 (CPU) (high = error, short-circuit is
detected).
Exposure
n
n
Check the maximum heating rate at TP - FC1, D916 (CPU)
Check the connections between D927 (X5) and the single tank (termi‐
nals 11 and 12).
Possible defects: D927, D916.
ERR 37
Error in the kV control loop
System
mode:
Explanation: D916 (CPU) detects an error in the kV control loop.
Exposure
The value KV actual (TP-KV) does not agree with the value KVnominal (TPKVS).
Action: For troubleshooting Err 37, the procedure shown in the flow chart
"Err 37" (see
( Fig. 26 Page 56) and ( Fig. 25 Page 55)) is recommended. Also see
the instructions in the chapter "High-voltage circuit" ( High-voltage cir‐
cuit / Page 83).
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Error messages 4
Fig. 25: Detailed view: D962 U+ and U-
U+
© Siemens, 2009
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U-
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4 Error messages
Fig. 26: Error 37
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Error messages 4
ERR 38
Error in the mA control loop
System
mode:
Declaration: D916 (CPU) detects an error in the mA control loop (test point
D916 (TP - JR) and (TP - JRS).
Action:
n
Check the maximum frequency of filament inverter FC1.
Exposure
n
Ensure that value Iactual (JR) agrees with value Itarget (JRS).
n
Check the cable connections between D916 (X8) and single tank D907.
Possible defects: D916; D927; D907.
ERR 39
Timeout during exposure (>tmax)
System
mode:
Explanation: D916 (CPU) detects a timeout during exposure (>tmax). If the
exposure lasts longer than calculated, the exposure is interrupted by the
system. This can occur if the mAs integrator on D916 (CPU) is defective.
Action:
n
Check the resonance frequency of the filament inverter TP - FC1 on
D916 (CPU).
Exposure
n
Replace D916 (CPU).
ERR 41
Exposure not completed
System
mode:
Explanation:




Exposure
The exposure was interrupted via the hand switch.
kV or mA control failed.
Remote control option: Fault / battery low
If Error 41 occurs during remote control triggering, the cables of the
IR sensor may be routed too closely to the primary high voltage
power cables (problems cause by power cable).
ERR 42
Filament current exceeds permissible limit
System
mode:
Explanation: D916 (CPU) detects that the filament current is outside of the
permissible limits (too low or too high) during "preparation" or an expo‐
sure.
Action:
n
Check the filament current at test point TP - IH on D916 (CPU).
Exposure
n
Check the maximum frequency of filament inverter FC1.
n
Check the cable connection between D927 (X5) and the single tank.
n
Check ribbon cable X11 (D927-D916).
Possible defects: D916; D927; single tank.
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4 Error messages
ERR 43
Exposure release with activated motor drive
System
mode:
Explanation: Exposure is not possible.
Safety precaution to prevent exposures while the system is being moved
by motor drive.
Exposure
ERR 92
RAM error
System
status:
Explanation: D916 (CPU) detects a RAM error.
Action:
n
Check the supply voltages of power supply U1.
Initializa‐
tion
 Check fuses F7 and F8 on D927, relay K22 and the cable connec‐
tions.
n
Check the voltages at D916 X15.
-
+15 V D916 X15 pin 5-6
-15 V D916 X15 pin 6-7
+ 5 V D916 X15 pin 4-3 (range: 5.15 V to 5.25 V, see also Err 0)
ERR 93
Voltage error of +15 Vcc
System
status:
Initializa‐
tion
Explanation: D916 (CPU) detects a voltage error of +15 Vcc.
Action:
n
Check the voltages of power supply U1 and D916 X15.
-
+15 V D916 X15 pin 5-6
-15 V D916 X15 pin 6-7
+5 V D916 X15 pin 4-3
ERR 96
kV converter error
System
status:
Initializa‐
tion
Explanation: CPU board D916 is defective.
Action:
n
Check the voltages of power supply U1 and D916 X15.
MOBILETT XP family
-
+ 15 V D916 X15 pin 5-6
- 15 V D916 X15 pin 6-7
+ 5 V D916 X15 pin 4-3
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Error messages 4
ERR 97
mA converter error
System
status:
Initializa‐
tion
Explanation: CPU board D916 is defective.
Action:
n
Check the voltages of power supply U1 and D916 X15.
-
+ 15 V D916 X15 pin 5-6
- 15 V D916 X15 pin 6-7
+ 5 V D916 X15 pin 4-3
ERR 98
IH converter error
System
status:
Initializa‐
tion
Explanation: CPU board D916 may be defective.
Action:
n
Check the voltages of power supply U1 and D916 X15.
© Siemens, 2009
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-
+ 15 V D916 X15 pin 5-6
- 15 V D916 X15 pin 6-7
+ 5 V D916 X15 pin 4-3
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5 Function Check
5.1 Reading out the MOBILETT XP error memory
n
n
Switch off the system and disconnect the power plug if necessary. Set the XP Hybrid
operating mode switch to "0". Please observe all safety information.
Remove the upper cover. Remove the XP Digital upper covers and place them on their
sides on a table or similar surface. Do not disconnect any cables.
n
Move switch SW2B on CPU board D916 to position 2 (service) (( Fig. 27 Page 60)).
n
Switch on the system.
n
n
Service program Pr 1 is displayed on the control panel. Use the mAs +/- keys to select
service program 3. Read out the error memory and make a note of the data (see the
service programs section of these instructions).
Subsequently set switch SW2B of D916 to position 1 (user) ( Fig. 27 Page 60).
Fig. 27: CPU D916
Fig. 28: D916, mat. number 10272714
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Function Check 5
5.2 Checking the line voltage supply

In the case of error and for all planned dismantling, disconnect the supply cable to the
capacitor charger (plug X3 on board D927).
For Hybrid/Digital, disconnect the four plugs of battery pack BK1-BK4 and the 300 V sup‐
ply cable plug to the capacitor bank.
The "~" symbol must be lit on the control panel when the power plug is connected.
n
Switch off the system and disconnect the power plug if necessary. (For XP Hybrid, the
operating mode switch = "0").
n
Measure the customer's power connection.
n
Check the power plug.
n
Open the upper cover and rear panel.
n
Check the power cord between the plug and the line filter.
First perform the test with the cable fully uncoiled, then as the cable is being coiled,
and finally with the cable completely coiled.
n
Remove the protective cover of D927.
V
 DANGER
There is a risk of a lethal electric shock when removing the safety cover in front of
D927.
 The voltages at fuse F5 of D927 can be up to 440 V!
n
Check the cables from the line filter to D927.
n
Check line fuses F7 and F8 on board D927 ( F7/ F8/Fig. 29 Page 62).
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5 Function Check
Fig. 29: D927
(1) F5
(2) X3
(3) F7/F8
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Function Check 5
5.3 Checking the intermediate circuit/capacitor bank
 DANGER
There is a risk of a lethal electric shock when troubleshooting at the capacitor
bank. Be careful when removing the safety cover in front of D927 or when remov‐
ing the capacitor bank.
 In the case of an error, the voltage at individual capacitors C1-C12 can be > 40
V even after discharge of capacitor bank C1-C12 (approx. 25 minutes), regard‐
less of the measured intermediate voltage.
In the case of error and for all planned dismantling, disconnect the supply cable to the
capacitor charger (plug X3 on board D927).

For Hybrid/Digital, disconnect the four plugs of battery pack BK1-BK4 and the 300 V sup‐
ply cable plug to the capacitor bank.

To check the function of the capacitor bank charging board (D952), also look at the LEDs
on the D952 ( D952, mat. no. 7566974 (charging unit capacitor group) / Page 36)
In the case of an error, the capacitor bank must be completely dismantled. This work is
described in the "Replacement of parts" instructions SPR8-230.841... .
n
n
n
Switch off the system and disconnect the power plug if necessary. In XP Hybrid, set
the operating mode switch to "0". Please observe all safety information.
Remove the covers in the following order: the upper cover first, then the rear cover,
and finally all the side covers.
Check or measure the current intermediate voltage with the system switched on (ca‐
pacitor bank C10C12). Different checks are possible:
-
At test point D916 TP "VC“ (13), (1 V^100 V )
At fuse F5 D927 against GND. The safety cover of D927 must be removed for this
measurement.
Visual inspection of LED displays V1-V12 on board D972 of the capacitor bank
( V/Fig. 30 Page 64).
 As long as an LED lights up, the assigned capacitor is still charged > 40 V (refer
to Layout D972 of these instructions).
 If one or several LEDs on D972 is missing, the capacitor bank must be disman‐
tled completely. (See "Replacement of parts, MOBILETT XP").
n
© Siemens, 2009
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Check fuse F5 - D927. Only measure and change the fuse when plug X3/D927 is dis‐
connected and fuse F5 is voltage-free.
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5 Function Check

The image in ( Fig. 30 Page 64) shows the capacitor bank in the uninstalled state.
When installed, board D972 is only visible from the side.
With the system "ON", capacitors C1-C12 are charged to 440V (±10%), V1-V12 light up a
distinct yellow. With the system "OFF" (Hybrid = "0"), capacitors C1-C12 are discharged.
LEDs V1-V12 show the charge level of the capacitors > 40 V. The complete discharge (to
<3V) takes approximately 20 minutes.
Fig. 30: D972 LED displays V1-V12
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Function Check 5
Fig. 31: D972 and D952 new version
Fig. 32: D927 capacitor voltage measurement
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5.4 Battery unit (Hybrid/Digital only):

The MOBILETT may be turned on only if all battery packs BK1 - BK4 are connected to
D982.
If one or more battery packs are plugged in or pulled out while the unit is switched on,
then fuse F3 and/or F4 (on D982) will blow.
24 batteries at 12 V/7 Ah Pb, grouped to form 4 battery packs (BK1-BK4), divided in the
left blocks (BK1&BK2) and the right blocks (BK3&BK4), for the battery unit. Each battery
block is assigned a charger of D982.
Charging unit 1 of D982 supplies the left-hand battery block (which consists of BK1 &
BK2). Charging unit 2 of D982 supplies the right-hand battery block (which consists of
BK3 & BK4).
If any defects occur, both battery blocks (left and right) must be replaced. For the materi‐
al number, see the Spare Parts Catalog.
Fig. 33: Installed battery packages BK1-BK4_01
Fig. 34: Single battery package
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Function Check 5
D916 (CPU) checks the charge level of the batteries via charger D982. LEDs are activated
on the display of D908 (XP, Eco, Hybrid) ( Fig. 35 Page 67) or D909 (Digital) in accord‐
ance with the battery level. This display is valid whenever the line voltage plug is dis‐
connected.

With battery charging unit D982, material nos. 10272759 and 10272764 , all three LEDs
blink in succession during the charging process until the batteries are fully charged.
When the batteries are fully charged, all three LEDs light up continuously.
Fig. 35: Board D908 user display
The following table shows the battery status when switched on:
Tab. 1
Battery charge level
Display
Information
V21, V22, V23 = “ON" Batteries fully charged (100%)
V21, V22 = “ON”
Batteries 60-80% charged
V21 = “ON”
Batteries < 60% charged
V21, V22, V23 = “OFF" Discharge batteries, no exposures possible, motor drive
(Hybrid/Digital) possible, battery block voltage (left of
right block) between 125V and 135V.
V20 = “ON” (red LED)

Batteries highly discharged, Err10 output, no exposures
possible, motor drive possible, battery block voltage (left
of right block) between 110V and 125V.
If battery voltages of a battery block (left or right side) are < 110V, the MOBILETT XP (XP
Hybrid/Digital) will switch off!
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5 Function Check


5.4.1
If battery voltages of a battery block (left side [BK1+BK2] or right side [BK3+BK4]) are <
80V, the corresponding battery packs can no longer be charged and must be replaced.
The battery voltage of a battery block (left or right side) is the total of the battery voltag‐
es of the given battery packs, BK1 + BK2 (left side) or BK3 + BK4 (right side).
To measure the battery voltage of a battery pack, pull out the appropriate plug (BK1 BK4) and measure the voltage at the plug. When the battery packs are fully charged, the
voltage should amount to approximately 70 volts.
Checking the D982 (battery charger and batteries)
Mobilett switched off:

With battery charging unit D982, material no. 10272759 or 10272764 , all three LEDs
blink in succession during the charging process until the batteries are fully charged.
When the batteries are fully charged, all three LEDs light up continuously.
Battery field display
Fig. 36: Charging process
 Current status of charging process is displayed (no direct display of charge level)
Mobilett switched on:
n
1. System not connected to power supply:
Fig. 37: Voltage level of batteries
 Current status of battery voltage is displayed
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Function Check 5
n
2. System connected to power supply:
 Current status of battery voltage is displayed, but the D982 battery charger
works to reach "Float" status

Depending on which model of D982 is present ( Tab. 2 Page 69), there are two differ‐
ent flow charts for troubleshooting the battery charging circuit. Flow chart for versions
V1 through V5 ( Fig. 39 Page 71) and flow chart for version V6 ( Fig. 42 Page 75).
Should there be a problem in the battery charging circuit (batteries, D982), these flow
charts will help you delimit the problem.
Tab. 2
Overview of D982 (versions V1 through V6)
Circuit
board
Material No.:
Version
D982
08390234
V1
D982
10130442
V2
D982
07024461
V3
D982
07567071
V4
D982
10272759
V5
D982
10272764
V6
D982 battery charger (version V1 to V5)
n
n
© Siemens, 2009
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Check fuses F5 (40 A), F3,F4 (6 A)
Check whether LED V33 (V8)( 1/Fig. 38 Page 70)for BK1-BK2 and LED V34(V9)
( 2/Fig. 38 Page 70) for BK3-BK4 are lighted. In normal operation, both LEDs
should light up.
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n
If LED fault1 or fault2 is lighted (red LEDs on D982), check the fuses. If the fuses are
OK, check the battery voltage (voltage j > 60 volts) of the individual banks of batter‐
ies. If they are OK, replace the D982.
The following figure shows board D982 for versions V1 through V5
Fig. 38: D982
1
2
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Function Check 5
Fig. 39: D982 - flow chart up to V5
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5 Function Check
Fig. 40: D982 up to Version V5
The following table contains additional information for troubleshooting D982 for versions
V1 through V5:
Name
Description
Vac
PFC stage OK
Vo1
LED
LED at D982 V1 LED at D982 V2, Status
& V3
V4, & V5
V28
V63
Out voltage BK1
- BK2
V33
V8
Vo2
Out voltage BK3
- BK4
V34
V9
Fault 1
Fault BK1 - BK2
V82
V37
Fault 2
Fault BK3 - BK4
V80
V41
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OK *)
OK
OK
Error
Error
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Function Check 5
*) The Vac LED may be installed in different locations depending on the version of D982.
The following table shows the charge state (advanced troubleshooting)

Only one LED should illuminate.

The normal charge state is indicated when all LEDs are in OFF status.
Name
Description
Trck 1
Trickle BK1 - BK2
OL 1
Overload BK1 - BK2
Float1
Floating BK1 - BK2
Trck 2
Trickle BK3 - BK4
OL 2
Overload BK3 - BK4
Float 2
Floating BK3 - BK4
LED LED at D982 V1 LED at D982
& V3
V2, V4, & V5
V46
V38
V42
V39
V85
V40
V40
V42
V39
V43
V84
V44
D982 battery charger (version V6, material no.: 10272764)
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For system serial numbers:
Mobilett XP Hybrid, 2700 and higher

Mobilett XP Digital, 3140 and higher
ITX560, 10260 and higher,
an F10 (40 A) battery fuse protection ( 1/Fig. 41 Page 74) is installed.
If you suspect a defect in the battery charging circuit, you should check this fuse as well.
Fig. 41: F10 battery fuse protection
1
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Function Check 5
Fig. 42: D982 flow chart for V6
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Fig. 43: D982- layout for version V6
Tab. 3
The following table is used to check the batteries.
If
Check
1. System has been
charging for a long
time (several hours) (3
LEDs ON, Float)
n
n
n
2. System has been
charging for a long
time (several hours) (3
LEDs ON, Float)
n
n
n
n
MOBILETT XP family
Action/Explanation
Switch system on for 5 mi‐
nutes. Display: 3 LEDs.
Then switch system off and
connect to power supply (1
or 2 LEDs ON)
The system is OK. The
charger always starts in
"Charge" status and
moves through "Over
Load" into "Float" status
After a few minutes, all 3
LEDs ON again
Switch system on for 5 mi‐
nutes. Display: 3 LEDs.
Activate motor drive for 5
minutes
Then switch system off and
connect to power supply (1
or 2 LEDs ON)
The system is OK. In this
case the charger needs a
longer time to move from
"Charge" status into "Over
Load" or "Float" status.
After a few minutes, only
one or two LEDs ON again
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Function Check 5
If
Check
3. System has been
charging for a long
time (several hours) (3
LEDs ON, Float)
n
n
n
n
4. System switches it‐
self off due to Err 10
n
n
5.4.2
Action/Explanation
Switch the system on. Dis‐
play: 3 LEDs.
Batteries at end of useful
life. Charge/discharge the
After 5 minutes Display: on‐ batteries. If the charge
process takes < 1 hour, re‐
ly 1 LED.
place the batteries.
Then switch system off and
connect to power supply (1
or 2 LEDs ON)
After a few minutes, all
three LEDs are ON
Connect device to power
supply.
After a few minutes all 3
LEDs ON
Batteries defective.
Charge/discharge process
to fast.
Checking the motor drive (only hybrid/digital)
For more simple troubleshooting of the "Motor drive handle", the service tool, "Motor
drive tester", T102 Part No: 10272763 was introduced.
A description of use is included with this tool.
Fig. 44: Motor drive tester/analyzer
The back side of the tool also has an additional explanation of the function.

For safety reasons, the motor drive (movement of the unit) is switched off while using
this tool. Only the control switches are simulated.
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5 Function Check
This tool has 2 functions which can be used together or one after the other.
Testing motor handle
n
Remove plugs X13A and X13B from the CPU
n
Connect plugs X13A and X13B of the service tool to the CPU.
n
Connect plug X13A from motor drive handle to the plug X13A of the service tool
n
Switch the unit on
 Check the switches using the table
LED Name
Function
D1
Slow
D2
Fast
D3
Backward (reverse)
D4
Forward
If one of the functions is not present (LED does not light up), the respective switch must
be simulated by operating the corresponding key (S1 to S4) on the tool. If the corre‐
sponding LED still does not light up, the problem is on the CPU PC board.
D102 Test
n
Remove plugs X13A and X13B from the CPU
n
Connect plugs X13A and X13B of the service tool to the CPU.
n
n
Connect the X13B plug from the motor drive D102 cable to the X13B (D102 connec‐
tor) plug of the service tool.
Switch the unit on
First:
If the LED D9 lights on the T102 (service tool), this indicates that the power supply of the
D102 (motor drive PC board) is functioning (fuse is OK).
If this LED does not light up, check plug K104 on D102.
If the LEDs on the service tool light when operating switches S1-S4, this means the CPU is
forwarding the signal to D102.
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Basic functions 6
6.1 Switch-on mode
The line voltage must be in the range of 110 V (+/-10%) or 230 V (+/-10%).
The line voltage is conducted via line filter Z1 to D927.
Board D927 distributes the required voltage via board fuses F7/F8 and control relay K22
to the system.
Power supply U2 is fed constantly when there is line voltage applied.
The system control unit (CPU) D916 and logical control unit D927 are supplied by power
supplies U1 and U2 when system switch SW1 (key switch) is activated.
System initialization begins:
SW1 = ON
The following functions are integrated on board D927:
-
Power distribution, (fuses F7 and F8)
Switch-on circuit (fuse F3)
Voltage supply to the capacitor charger (fuse F6)
Supply for the intermediate circuit for anode start, filament circuit, and high-voltage
(fuse F5)
-
Collimator light
All functions are controlled and monitored by D916 (CPU).
For XP Digital, voltage supplies U3/U4 are switched on to supply 220 V AC to the CXDI PC,
power box, and touchscreen.
The main system functions are activated during initialization of D916 (CPU). The main
functions are:
-
Charging of the capacitors
Preparation of the filament circuit
Preparation of the high-voltage circuit
After conclusion of initialization, the system shows the preferred values for kV and mAs
and is ready for operation.
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6 Basic functions
6.2 Unexpected shutdown of the PC (laptop)
The PC (laptop) can only be started when the system (Mobilett) is switched on. The PC
requires a voltage of 110 volts, which is provided by the U4 power supply (see wiring dia‐
gram).
The indicator ( 1/Fig. 45 Page 80) on the U4 (blue box) should show only a green LED
(lit up) after the system has been switched on. If this is not the case, then the voltage for
the PC is incorrect (yellow or red LEDs) and the PC will shut down automatically.
Fig. 45: U4 power supply
Fig. 46: U3 power supply
1
1
3
2
If a deviation occurs, then the input voltage for the U4 can be set to 24 volts (+0.3 volts)
between CN2 2,3 (+)( 2/Fig. 46 Page 80) and CN2 6,7 (-)( 3/Fig. 46 Page 80), using the
VR501 potentiometer on the U3 ( 1/Fig. 46 Page 80) (U3 board next to the power supply
box). Perform the setting on the potentiometer only with very fine movements (sensitive
adjustment).
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Basic functions 6
6.3 Mode of operation of the capacitor bank
Capacitor bank D972 generates the intermediate circuit voltage for the HV inverter, fila‐
ment inverter, and anode starter modules.
Capacitor bank D972 is continuously charged by capacitor charger D952.
Capacitor bank D972 consists of 12 capacitors connected in parallel that deliver sufficient
energy to operate the inverter. Each capacitor is connected in series with a fast fuse. Each
capacitor has a capacity of 10 mF. The total capacity is 0.12 F. To facilitate handling of
these live components, the LEDs at the capacitors show the charge level > 40 V.
When the system is "OFF", the capacitors are discharged to a voltage of <40 V via three
resistors (R3, R4, R5) within 15 minutes.
The charging time of the capacitors varies depending on the charge level of the capacitor
bank. Around 7 to 9 seconds are required for charging empty capacitors.
The intermediate circuit voltage of the capacitor bank is monitored by D916 (CPU).
In the case of an error, the charging procedure is interrupted.
When replacing one or more capacitors of the capacitor bank, all capacitors must have a
voltage value of < 2 V to avoid outage of the fast fuses on D972.
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6 Basic functions
6.4 Mode of operation of the anode starter
The anode starter on D927 is fed by the intermediate circuit voltage of the capacitor
bank.
The "preparation" function causes the rotating anode to start up (150 Hz). The anode runs
freely during the exposure. The started anode stator is not supplied with voltage. At the
end of exposure, the anode is braked.
The anode starter is controlled by D916 (CPU).
The rotating anode motor in the single tank functions as a single-phase motor with a
phase-shifted auxiliary phase via capacitor C2.
The anode starter is not activated in standby.
D916 monitors the motor current through measuring signals TP-I1 and TP-I2 and thus
protects anode operation. If a phase is missing or the motor current is outside the permit‐
ted range, the system interrupts the anode starting function and brakes the anode.
The braking process of the anode rotation lasts around 5 seconds. The system subse‐
quently switches over to standby.
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Basic functions 6
6.5 High-voltage circuit
6.5.1
Principle of operation
The high-voltage circuit is to reach the selected high-voltage as quickly as possible and
keep it constant during the exposure.
The high-voltage circuit is made up of the following components:
-
D916 (CPU)
Main inverter on D962
Oscillating circuit capacitor C1
High-voltage transformer in the single tank
D907 measurement data log
Intermediate circuit, capacitor bank D972
The high-voltage inverter is not active in standby.
With "exposure," the nominal kV of D916 is output (measurable at TP-KVS D916).
During exposure, D916 controls and monitors the high-voltage.
The high-voltage can be measured as test points TP-KVN, TP-KVP (1 V = 10 kV) and TP-KV
(1 V = 30 kV, total kV) on D916.
n
Possible error messages of the high-voltage circuit:
ERR 4
Static short-circuit at the main inverter
ERR 8
Static kV measured value <> 0
ERR 31
kV exceeds permissible limit
ERR 34
X-ray current exceeds permissible limit (tube short-circuit)
ERR 35
Short-circuit at the main inverter
ERR 37
Error in the kV control loop
For more details, also see ( Fig. 26 Page 56).
6.5.2
6.5.2.1
Sample high-voltage measurements
Positive/negative high-voltage measurement
n
n
n
Switch off the system
Remove the top cover and, in the case of MOBILETT XP Digital, place it on its side on a
table or similar surface (do not disconnect any cable connections)
Oscilloscope channel 1 at D916 TP “KVP” (4) and D916.GND (1), channel 2 at D916 TP
“KVN” (3)
Oscilloscope setting: channel 1 = 2V/div, channel 2 = 2V/div, trigger channel 1, trigger
stage 1.5 V, 500 μs/div
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6 Basic functions
n
n
X
n
Switch the system on
Select 121 kV, 5 mAs on the control panel (For Digital, first switch to the manual oper‐
ating mode)
Release an exposure
 Below is the oscillogram of the positive and negative high-voltage values
Fig. 47: Exposure_kVp_kVn_2

6.5.2.2
If problems are encountered in the high voltage circuit, it is recommended to measure
the measuring leads at the X8 plug (D916 input). When the leads at the X8 plug, pin 1 pin 3 (KVP - ground) and pin 2 - pin 3 (KVN - ground) are measured, the resulting value
should be about 20 kΩ each. The measured value must never amount to 0 Ω ; a zero
value here indicates a fault in the signal cable.
Sample error with tube short-circuit ERR 34
n
n
n
Switch off the system
Remove the top cover and, in the case of MOBILETT XP Digital, place it on its side on a
table or similar surface (do not disconnect any cable connections)
Oscilloscope channel 1 at D916 TP “KVP” (4) and D916.GND (1), channel 2 at D916 TP
“KVN” (3)
Oscilloscope setting: channel 1 = 2V/div, channel 2 = 2V/div, trigger channel 1, trigger
stage 1.5 V, 1 ms/div
n
n
MOBILETT XP family
Switch the system on
Select 133 kV, 2 mAs on the control panel (For Digital, first switch to the manual oper‐
ating mode)
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Basic functions 6
X
n
Release an exposure
 Below is the oscillogram of the positive and negative high-voltage values
Fig. 48: Exposure_kVp_kVn_s
6.5.2.3
Setting the highest frequency for the main inverter (50 kHz)
n
n
n
n
Switch off the system
Remove the top cover and, in the case of MOBILETT XP Digital, place it on its side on a
table or similar surface (do not disconnect any cable connections)
Remove the metal plate over board D916 For MOBILETT XP Digital, remove the CXDI
PC (laptop) and also remove the holder plate
Oscilloscope channel 1 at D916 TP “FC2” (26) and D916 TP “GND” (1)
Oscilloscope setting: 1V/div, sweep 5 μs/div
n
Move switch SW2B on D916 to 2 (service program) and switch the system on
n
Select service program 7
n
n
© Siemens, 2009
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Use exposure switch S27 to press and hold "PREP"
Set the resonance frequency of the main inverter via potentiometer P4 on D916 to 50
kHz +/-0.5 kHz ( Fig. 49 Page 86)
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6 Basic functions
Fig. 49: FC2_50kHz
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Basic functions 6
6.6 Filament circuit
6.6.1
Principle of operation
The filament circuit controls standby heating, preheating in the preparation phase, and
the tube current during exposure.
The filament circuit is made up of the following components:
-
D916 (CPU)
Filament inverter on D927
D907 measurement data log
Filament transformer/heating coil for the single tank
Intermediate circuit, capacitor bank D972
In standby and during preheating, the primary current of the filament transformer is ob‐
tained from D916 (CPU) ( TP I / D916 (1 V = 1A)). The effective primary current is conver‐
ted into IH and regulated by the target IHS value (TP IH / D916 (1 V = 2 A)).
During an exposure, D916 (CPU) controls the filament circuit via the tube current.
The exposure is performed with a decreasing load, reduction in the tube current.
Maximum exposure output:
Tab. 4
Maximum output for different exposure times
ms
KV
KW
0-10
>= 81
30
10-100
>= 81
25
0-100
< 81
25
Possible error messages for the filament circuit:
-
© Siemens, 2009
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ERR 6, filament inverter frequency error
ERR 7, invalid primary filament current
ERR 9, invalid tube current, mA <> 0
ERR 12, short-circuit of the filament inverter
ERR 15, static short-circuit of the filament inverter
ERR 22, short-circuit of the filament inverter
ERR 23, filament current exceeds permissible limit
ERR 34, tube current exceeds permissible limit
ERR 36, short-circuit of the filament inverter
ERR 38, error in the mA control loop
ERR 42, filament current exceeds permissible limit
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6 Basic functions
6.6.2
Troubleshooting in the filament circuit
For troubleshooting in the filament circuit, the service tool, "Filament tester", part no.:
10390704 was introduced. A description of use is included with this tool.
For details, also see ( Fig. 23 Page 46).
Fig. 50: Filament tester
The procedure to use the service tool is shown in the following flowchart B:
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Basic functions 6
Fig. 51: Flow chart B
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6 Basic functions
6.6.3
6.6.3.1
Sample heating measurements
Measuring the standby heating
n
n
n
Switch off the system
Remove the top cover and, in the case of MOBILETT XP Digital, place it on its side on a
table or similar surface (do not disconnect any cable connections).
Oscilloscope channel 1 at D916 TP “I” (7) and D916.GND (1) - resonant filament cur‐
rent.
Oscilloscope setting: channel 1 = 2 V/div, trigger channel 1, trigger stage 1.5 V, 100
μs/div
n
Switch the system on
 Below is the oscillogram of the resonant filament current during standby
Fig. 52: Stand_by_operation_ih_ir

The oscillogram below shows a single oscillation (shorter time base) of the resonant fila‐
ment current during standby.
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Basic functions 6
Fig. 53: Stand By_I
6.6.3.2
Setting the highest frequency of the filament inverter (75 kHz)
The settings are made via a 2-channel oscilloscope and potentiometer P3 of D916 (CPU).
n
n
n
n
n
Switch off the system
Remove the top cover and, in the case of MOBILETT XP Digital, place it on its side on a
table or similar surface (do not disconnect any cable connections).
Remove the back cover of the MOBILETT XP (Access to D927)
Remove the metal plate over board D916 For MOBILETT XP Digital, remove the CXDI
PC (laptop) and also remove the holder plate
Oscilloscope channel 1 at D916 .FC1 (TP25) and D916.GND (TP1)
Oscilloscope setting: 1V/div, sweep 5 μs/div
n
Remove the protective cover of D927 Caution! It is possible to come into contact with
components under voltage!
n
Disconnect plug X5 of board D927 (breaking the filament circuit)
n
Move switch SW2B on D916 to 2 (service program) and switch the system on
n
Select service program 9
n
Use exposure switch S27 to press and hold "PREP"
n
© Siemens, 2009
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Set the resonance frequency of the filament inverter via potentiometer P3 on D916 to
75kHz +/- 2 kHz
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6 Basic functions
Fig. 54: Test point FC1 75 kHz
6.6.3.3
Measuring preheating
n
n
n
Switch off the system
Remove the top cover and, in the case of MOBILETT XP Digital, place it on its side on a
table or similar surface (do not disconnect any cable connections).
Oscilloscope channel 1 at D916 TP “I” (7) and D916.GND (1) - resonant filament cur‐
rent
Oscilloscope setting: trigger channel 1, trigger stage 1 V, 2 V/div, sweep 100 μs/div
n
n
Select 81 kV and 5 mAs on the control panel In the case of XP Digital, switch to the
manual operating mode
Use exposure switch S27 to press and hold "PREP"
 Below is the oscillogram of the resonant filament current during preheating

See the "MOBILETT XP, Replacement of parts" instructions for information on setting the
filament current on the D916.
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Basic functions 6
Fig. 55: Preparation_ih_ir

The oscillogram below shows a single oscillation (shorter time base) of the resonant fila‐
ment current during preheating.
Fig. 56: Preparation_I
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6 Basic functions
6.6.3.4
Measuring the exposure (mA and kV)
n
n
n
Switch off the system
Remove the top cover and, in the case of MOBILETT XP Digital, place it on its side on a
table or similar surface (do not disconnect any cable connections).
Oscilloscope channel 1 at D916 TP “KV” (5) and D916 TP “GND” (1), channel 2 at D916
TP "JR" (6)
Oscilloscope setting: channel 1 = 2 V/div, channel 2 = 1 V/div, trigger channel 2, trig‐
ger stage 1 V, sweep 20 ms/div
n
n
X
n
Switch on the system
Select 81 kV, 40 mAs on the control panel (For Digital, first switch to the manual oper‐
ating mode)
Release an exposure
 Below is the oscillogram of the high-voltage and the tube current
Fig. 57: Exposure_kV_ir5
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Basic functions 6
6.7 mAs counter
The tube current acquired on board D907 is conducted to a voltage frequency converter
on D916 (CPU).
This converter generates a proportional frequency with a ratio of 100 mA = 16 kHz. The
output impulses can be measured by the oscilloscope at test point F1 on D916. The im‐
pulses are digitally integrated to count the necessary mAs value.
The mAs counter switches the exposure off when the set mAs values are reached and
switches to standby.
If the time limit of 3 or 5 seconds is reached prior to mAs switch-off, the exposure is can‐
celed and an error message is output.
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7 Service programs
7.1 Overview
7.1.1
Activating service programs
n
System OFF
n
Remove the top cover.
n
Service switch SW2B on board D916 in position 2
n
System ON.
 Display shows "Pr 1"
n
n

7.1.2
Use the "mAs+ / mAs-" keys to select the service program
Use the Collimator Lamp button on the control panel to start a service program. To
end a service program, press the Collimator Lamp button again.
If a service program is activated, no radiation can be released.
Program 1 - formatting the capacitor bank
Program 1
n
n
n
After the start of the service program, "CAP 150" is shown on the display.
The voltage rises incrementally from 150 V to 440 V DC. Each program step is per‐
formed for approx. 6 minutes.
The system maintains the voltage level of 440 V DC for approx. 1 hour. The program
is then ended automatically. After termination of the program, the message "CAP
END“ is displayed.
NOTE:
If the actual voltage is greater than 150 V, the program first performs a discharge to <
150 V. This process takes 10 to 15 minutes. The program then begins charging the ca‐
pacitor bank.
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Service programs 7
7.1.3
Program 2 - Exposure counter
Program 2
n
Display of exposure number in the display
NOTE:
It is not possible to reset to zero in the event of a tube change.
The counter reading must be noted as the starting value for a new component (e.g. sin‐
gle tank).
7.1.4
Program 3 - Error log
Program 3
7.1.5
n
Shows an error list of the last 20 error messages.
n
The left section shows how many error messages were logged.
n
The error codes are shown in the right section.
n
The latest error message is shown first.
n
Use the mAs +/- keys to display the next error messages.
Program 4 - Deletion of the error log
Program 4
n
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Keep the kV+ key pressed for approx. 4 seconds to delete the error list.
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7 Service programs
7.1.6
Program 5 - changing the preferred values for kV & mAs
Program 5
n
After the start of the service program, "LAS VAL" is shown on the display.
This does not mean that the "Last value" option has been selected.
n
The “Last Value" function can be activated with the “Collimator Lamp” button.
Select "Last values" or "Default values".
n
Last Value: press the "Collimator light" button once to save the "Last value" function
and end program 5.
or
n
7.1.7
Default Values: select the desired values for kV and mAs and then press the "Collima‐
tor light" button to save these values. This will cause these values to be displayed
each time the system is started up.
Program 6 - Display of the maximum values (KV & mAs)
Program 6
n
n
7.1.8
The maximum exposure parameters can be selected/established via the kV+/kV- and
mAs+/mAs- keys.
Collimator lamp button to save these values and to end the program.
Program 7 - setting the maximum main inverter frequency
Program 7
n
After the start of the service program, "ADJF" is shown on the display.
n
Measure F (max) at the test point TP-FC2 on D916.
n
Set exposure switch S27 to "preparation".
n
set the frequency of the main inverter with potentiometer P4 at D916.
(Turn counter-clockwise - Increase).
- Setting value for TP-FC2 is 50 kHz +/-0.5 kHz
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Service programs 7
7.1.9
Program 8 - Anode starter - start/stop test
Program 8
n
"ROT220" (present line voltage of the system) is displayed on the display. When con‐
necting Mobilett XP Hybrid to 110 V and “Mains mode” --> "110" is displayed
When connecting Mobilett XP Digital and Hybrid in “Battery mode”-->220 display
n
7.1.10
Set exposure switch S27 to "preparation". The anode starter is activated. The anode
accelerates.
Program 9 - Filament current test
Program 9
n
n
7.1.11
After the start of the service program, "FIL3“ is shown on the display.
Set exposure switch S27 to "preparation". Preheating begins. "FIL5" is shown on the
display as long as exposure switch S27 is pressed.
Program 10 - AutoOff on/off (Hybrid/Digital in battery mode)
Program 10
n
n
n
After the start of the service program, "ON" or “OFF“ is shown on the display.
ON = automatic switch-off after approx. 15 minutes of inactivity (default factory set‐
ting: Hybrid = ON, Digital = OFF)
Use the mAs+ or mAs- keys to switch over.
NOTE:
If the battery voltage is less than 110 V (right or left side), the system is always switched
off (Hybrid and Digital).
7.1.12
Program 11 - Exposure points
Program 11
n
n
n
© Siemens, 2009
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After the start of the service program, "ON" or “OFF“ is shown on the display.
ON = 47 (for ECO = 45) exposure points possible (default factory setting); OFF = 24
(for ECO = 23) exposure points possible
Use the mAs+ or mAs- keys to switch over.
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7 Service programs
7.1.13
Program 12 - system type
Program 12
n
After the start of the service program, system information is shown on the display.
E.g.:
7.1.14
“DIG 102” = Digital, 102 = Firmware VA00B (A = 1, B = 2, ...)
“103” = XP Hybrid, 103 = Firmware VA00C (A=1, C=3, ...)
“ECO 102” = ECO, 102 = Firmware VA00B (A=1, B=2,...)
Program 13 - sound level of the keyboard
Program 13
n
n
n
n
n
7.1.15
After the start of the service program, "bep1", “bep2”, or “bep3“ is shown on the dis‐
play.
bep1 = OFF; confirmation tone upon pressing the "kV," "mAs," or "collimator lamp"
keys is OFF (factory default setting).
bep2 = quiet; confirmation tone upon pressing the "kV," "mAs," or "collimator lamp"
keys is ON
bep3 = loud; confirmation tone upon pressing the "kV," "mAs," or "collimator lamp"
keys is ON
Use the mAs+ or mAs- keys to change this.
Program 14 - mAs counter configuration
Program 14 (possible starting with system serial no. 2001/D916 material no. 7566909)
n
n
n
MOBILETT XP family
This program is provided for plant configuration only. Using the program, the base
frequency for the mAs counter can be set without releasing an exposure (if necessa‐
ry, e.g., after replacement of D916).
After the program launches, measure the frequency at point F1 (D916). The frequen‐
cy should be approx. 320kHz.
If required, adjust P1 (D916) using a potentiometer during exposure mode.
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Service programs 7
7.1.16
Program 15 - Low Consumption Mode (only available with Mobilett XP/
Eco)
Program 15 (possible starting with system ser. no. 2001/D916 Item no. 7566909)
n
n
Note: When operating the unit with 220 volt line voltage, this program should be
switched on if the circuit breaker is only sporadically tripped when an exposure is
triggered under heavy load.
After the start of the service program, "ON" or "OFF" is shown on the display.
ON = Low Consumption Mode switched on
OFF= Low Consumption Mode switched off
If the Low Consumption Mode is switched on, the jumper on D952 (Item no.
7566974) must be moved, refer also to Replacement of Parts).
The customer has to be informed regarding the limitation of the mAs range.
n
Use the mAs+ or mAs- keys to change this.
Fig. 58: D952 jumper
Fig. 59: D952 jumper position
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7 Service programs
7.1.17
Program 16 - Energy saving mode
Program 16 (only for Mobilett XP Digital with FW beginning with VB00D/VC00B or
Mobilett XP, XP Hybrid with FW beginning with VB00C/VC00A, or XP Eco with FW begin‐
ning with VC00A)
n
If this program is set to ON, after 5 or 10 min. (depending on the FW version) the
devices switches to an energy saving program. One reason for this is to prevent heat
buildup in the unit.
If the unit switches to the saving program, a blinking line appears in the kV/mAS dis‐
play.
When operating an organ program or a key, the unit returns to the normal mode af‐
ter a short time.
7.1.18
Program 17 - Checking the inverter current in the main inverter
Program 17 (possible only starting with FW VCXXX)
n
n
n
n
After the program starts, P Off is shown on the display.
Connect the oscilloscope to measuring point D916, KVc.
When the release button is pressed, the main inverter is activated once; P On ap‐
pears on the display, the progression of the inverter current can be measured at
point KVc; see graphic ( Fig. 60 Page 102).
After the button is released, P Off is shown on the display.
Fig. 60: Inverter current
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Service programs 7
7.1.19
Program 18 - Switch-on time of the collimator lamp
Program 18 (only for Mobilett XP Digital starting with FW VC00C or Mobilett XP, XP Hy‐
brid, XP Eco starting with FW VC00B.
n
After the start of the service program, "COL20" is shown on the display.
n
By pressing the mAs+/mAs button, the switch-on time can be set to:
COL 20--> for 20 sec switch-on time
COL 30--> for 30 sec switch-on time
COL 40--> for 40 sec switch-on time
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8 Changes to Previous Version
Chapter
Section
Revision
Error messages
Error 37
Image added with detailed view of D962, for measuring points
U+ and U-.
Service programs Service program 11 Specification for exposure points corrected.
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List of Hazard IDs 9
There are no Hazard IDs in this document.
© Siemens, 2009
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mens Healthcare Products. Any
document in electronic form may
be printed once. Copy and distribu‐
tion of electronic documents and
hardcopies is prohibited. Offenders
will be liable for damages. All other
rights are reserved.
healthcare.siemens.com/services
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Henkestr. 127
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Telephone: +49 9131 84-0
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Print No.: SPR8-230.840.01.18.02 | Replaces: SPR8-230.840.01.17.02
Doc. Gen. Date: 01.15 | Language: English
© Siemens Healthcare GmbH, 2009
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