BLOCK DIAGRAMS
1. SYSTEM BLOCK DIAGRAM
MCS_BCK/LRCK/MCLK/DATA
USB1 USB2
(VCC50)
A,B,C,D,E,F,PD
P/UP
LD
SERVO
BU9546
(4X Speed)
AM5890
Motor Drive
MOT_MUTE,CLOSE,OPEN
EN
USB
U
S S/W
D2S+/ -
M00_15
A00_16
MLC3730
Sub. DSP
SF_DI/DO
SF_CS/SCK
16 MB(128 Mb)
SDRAM
8 MB(64 Mb)
S/Flash
OP_SW,CL_SW,UP_SW,DN_SW,D_SENSE
USB_SW
(+3.3 V_CD, VCC1.2)
USB_D2_DATA
For AUX
m
SF_DI/DO
SF_CS/SCK
S/Flash
MCS_BCK/LRCK/MCLK
MLC3730
Main DSP
ADC_DATA
PGPC08
E2PROM
CLK/DAT
EEPROM
IR
Receiver 1
jo
FRONT
VFD_STB/CLK/DO/RST,
VKK,FL+/ STBY_LED,
RMC,KEY1
VFD
DIG301
Volume/
Key/switch
Slide A/B, Flash A/B,
DJ_A/B,KEY1~4,
Search_A/B, DJ_VOL_A/B,
M_VOL_A/B
F_LED_CLK/DAT
Fader_A/B
DAC
PCM5101
HP AMP
TPA6132
PS9860
PWM
PRE,AMP
S4308
IC
PCM1808
(± 5 V)
(± 57 V)
BTL
IR_IN_WL+
AMP_OSC
OP AMP
AZ4580
IR_IN_WL -
WL_OUT_P/N
DRIVER
IRS2092
X2
FET
IRF6775
X4
WL
DRIVER
IRS2092
X2
FET
IRF6775
X4
FL
IR_IN_FL+
FL_OUT_P/N
SL_OUT_P/N
OP AMP
AZ4580
IR_IN_FL -
SR_OUT_P/N
SL
IR_IN_SL
SPK_LED_CTRL
(+3.3 VA,+12 V)
RMC
MCS_BCK/LRCK, MCLK
IR
Receiver 2
For MIC
PWM_LRCK/BCK/DATA
16 MB(128 Mb)
i
M00_15
A00_16
SDRAM
IC200
ADC
CS5346
UART_RX/TX
32 MB(256 Mb)
DSP_O_DATA
DRM_WEN/CAS/
RAS/SEL/CLK/CKE
DAC_DATA
DECK
MECHANISM
LOAD±,SLED±,
SPIN±,TR±,F±
(+3.3 V_CD, VCC1.2)
MUTE, DET
M
OP AMP
DRV632
DRM_WEN/CAS/
RAS/SEL/CLK/CKE
CD_RW/ MCLK/ LRCK/ BCK,
CD_DAT
SPDO/SLDO
/FOD/TRD
DAC
PCM5101
CD_RST
OP AMP
AZ4580
IR_IN_SR
DRIVER
IRS2092
X2
FET
IRF6775
X4
DRIVER
IRS2092
X2
FET
IRF6775
X4
WR
DRIVER
IRS2092
X2
FET
IRF6775
X4
FR
SR
IR_IN_WR+
OP AMP
AZ4580
IR_IN_WR -
WR_OUT_P/N
IR_IN_FL+
Speaker Lighting
3-41
FR_OUT_P/N
3-42
OP AMP
AZ4580
IR_IN_FL -
SE
2. SMPS BLOCK DIAGRAM
VFD
MAIN SMPS
IC
(STR-2A153D)
Flyback
Ǹ
39 V
MAIN
TRANS
Vcc
PFC Out
(395 V )
PFC IC
(R2A20112A)
+
Gate
Drive
- 5V
OPAMP
5.6 VA
u-com / BT
USB / MPEG
14 VA
LED
Motor Drive
PFC
P-CTRL
On/Off
Pulse
Trans
Gate
Drive
3-43
FET
20 A
600 V
4 EA
On/Off
Ǹ
Ǹ
GATE
F_R
+PVDD
(58 V )
3-44
AMP
P-CTRL
F_L
Half
Bridge
LLC
TRANS
(AMP)
Half
Bridge
LLC
TRANS
(AMP)
FAN/Mic/
Relay
On/Off
Vcc
Relay
FL(+/ -)
12 V
On/Off
Half Bridge
LLC
Resonant IC
(ICE1HS01G)
AC
Ǹ
i
Totem
pole
FET
23.8 A
600 V
4 EA
jo
AC Line
Filter Block
(Varistor,
X-Cap
Line Filter
Thermistor)
4.5 V
Ǹ
m
Interleaved
CRM
Ǹ
VKK
Ǹ
Digital
Power
AMP
Mid_ L
Mid_R
SW_L
Ǹ
-PVDD
(-58 V )
SW_R
4.2 CH 4400 W
3. POWER BLOCK DIAGRAM
25 mA
VFD
IC200
PCM5101
FL ±
77 mA
IC501
+5.6 VA
555.2 mA
)
2
IC509
SDRAM
W9825G6
1 mA
+3.3 VA
1A
1A
+12 V
IC202
LDO(1 A)
LM37102
22 mA
IC600
LDO(1 A)
LM37102D
Option
IC505
LDO
AZ1117
+5 V_AMP
IC508
FLASH
W25Q128
20 mA
IC504
EEPROM
M24C16
2 mA
IC503
Chip Reset
AZ7027
2 mA
2 mA
IC602~ 6
OP AMP * 5
AZ4580
45 mA
LED_5
LED_5 V
3 A)
28
+9 V 350 mA
31
20 mA
IC201
S4308
A
80 mA
80 mA
IC5001
SUB DSP
MLC3730
IC506
MAIN DSP
MLC3730
70 mA
IC5000
LDO
AZ1117(1 A)
DVCC_1.2 V
50 mA
PICK UP
80 mA
FAN*3
300 mA* 3
SPK LED * 18
IC602~ 6
OP AMP * 5
AZ4580
35 mA
145 mA
IC700~ 9
IRS2092 * 10
AMP IC
110 mA
250 mA
- B+12 V
- 57 V
+57 V
3-45
3-46
TUNER
15 mA
RTC3.0
20 mA
6 mA
20 mA
IC5003
SDRAM
W9812G6
MCS_3.3 V
IC700~ 9
IRS2092 * 10
AMP IC
110 mA
2 mA
500 mA
500
38 mA
30 uA
RMC*2
301~ 2
IC5002
FLASH
8 MB
Bluetooth
TS3USB221
IC204
ADC IC
CS5346
IC500
P- SENSE
AZ7027
+5 V / 1 A
IC3U01
LM37102D
USB PWR +
+5 V / 1 A
LM37102D
225
2
25 mA
A
10 mA
IC50A
USB SW
160 mA
2 mA
+5 V_ADC POWER
902 mA
-5V
R
jo
155 mA
80 mA
IC401
RF IC
BU9546
MCS_3.3 V
15 mA
IC502
LDO(1 A)
AZ1117
+4.8 VA
340 mA
10 mA
IC601
PWM
PS986
+1.2 VA
34.2 mA
SMPS
3.2 mA
IC204
ADC IC
CS5346
DVCC_3.3 V
˧MCS_3.3 V
7
83 mA
IC203
TPA6132A2
50 mA
DIG301
VFD
IRF6775M * 20
FET
Expander
BU2090*2
5 mA
10 mA
i
370 mA
m
VKK
FRONT RED
LED(18 EA)
180 mA
FRONT WHITE
LED(6 EA)
60 mA
IMPORTANT SAFETY
NOTE :
WHEN SERVICING THIS CHASSIS, UNDER NO
CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN
BE MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LG CORPORATION. ALL COMPONENTS
SHOULD BE REPLACED ONLY WITH TYPES
IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT.
SPECIAL COMPONENTS ARE SHADED ON THE
CIRCUIT DIAGRAMS
1. SMPS - POWER #1 CIRCUIT DIAGRAM
No Power
SCHEMATIC FOR EASY IDENTIFICATION. THIS
CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER
FROM THE ACTUAL CIRCUIT USED. THIS WAY,
IMPLEMENTATION OF THE LATEST SAFETY AND
PERFORMANCE IMPROVEMENT CHANGES INTO
THE SET IS NOT DELAYED UNTIL THE NEW
SERVICE LITERATURE IS PRINTED.
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
2. Voltages are DC-measured with a digital voltmeter
during Play mode.
No Power
BD901 or BD902 is Defective
Q902 ~ Q905 are Defective
12
11
10
i
9
m
8
7
jo
6
5
4
No Power
F901 is Defective
3
2
Warning
Parts that are shaded are critical with
respect to risk of fire or electrical shock.
CAUTION:
Danger if fuse is incorrectly replaced.
Replace only with the type identical to fuse rating
and(or) model name described in main label.
1
A
B
C
SMPS 1/2
EAX66225601_1.5(5)-SD(#1)
2014. 12. 22
D
E
F
G
H
I
3-47
J
K
L
3-48
M
N
O
P
Q
R
S
T
IMPORTANT SAFETY
NOTE :
WHEN SERVICING THIS CHASSIS, UNDER NO
CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN
BE MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LG CORPORATION. ALL COMPONENTS
SHOULD BE REPLACED ONLY WITH TYPES
IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT.
SPECIAL COMPONENTS ARE SHADED ON THE
2. SMPS - POWER #2 CIRCUIT DIAGRAM
SCHEMATIC FOR EASY IDENTIFICATION. THIS
CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER
FROM THE ACTUAL CIRCUIT USED. THIS WAY,
IMPLEMENTATION OF THE LATEST SAFETY AND
PERFORMANCE IMPROVEMENT CHANGES INTO
THE SET IS NOT DELAYED UNTIL THE NEW
SERVICE LITERATURE IS PRINTED.
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
2. Voltages are DC-measured with a digital voltmeter
during Play mode.
12
11
10
i
9
No Power
No Power
F911 is Defective
7
m
8
Q911 ~ Q914 are Defective
jo
6
5
4
3
2
Warning
Parts that are shaded are critical with
respect to risk of fire or electrical shock.
1
A
B
C
D
E
SMPS 2/2
EAX66225601_1.5(5)-SD(#2)
2014. 12. 22
F
G
H
I
3-49
J
K
L
3-50
M
N
O
P
Q
R
S
T
3. MAIN - MAIN DSP CIRCUIT DIAGRAM
12
11
26 27 28
10
i
9
m
8
7
jo
6
5
4
3
3
4
1
2
2
1
24
: WAVEFORM NUMBER
A
B
C
D
E
F
G
H
I
3-51
J
K
L
3-52
25
M
MAIN DSP
EAX66091702_1.0(1)-SD(#1)
2015. 01. 08
N
O
P
Q
R
S
T
4. MAIN - SUB DSP CIRCUIT DIAGRAM
12
11
10
i
9
m
8
7
jo
6
5
4
3
4
3
2
1
SUB DSP
EAX66091702_1.0(1)-SD(#2)
2015. 01. 08
: WAVEFORM NUMBER
A
B
C
D
E
F
G
H
I
3-53
J
K
L
3-54
M
N
O
P
Q
R
S
T
5. MAIN - SERVO CIRCUIT DIAGRAM
12
11
11
10
10
i
9
m
8
7
jo
6
5
4
12
16
3
14
18 17 13 15
2
20 19
: WAVEFORM NUMBER
1
SERVO
EAX66091702_1.0(1)-SD(#3)
2015. 01. 08
A
B
C
D
E
F
G
H
I
3-55
J
K
L
3-56
M
N
O
P
Q
R
S
T
6. MAIN - ADC/ DAC CIRCUIT DIAGRAM
12
11
10
i
9
m
8
7
jo
6
5
4
21 22
23
3
2
1
ADC/ DAC
EAX66091702_1.0(1)-SD(#4)
2015. 01. 08
: WAVEFORM NUMBER
A
B
C
D
E
F
G
H
I
3-57
J
K
L
3-58
M
N
O
P
Q
R
S
T
7. MAIN - PWM CIRCUIT DIAGRAM
12
11
10
i
9
m
8
7
jo
6
5
4
9
7
8
3
5
6
2
1
PWM
EAX66091702_1.0(1)-SD(#5)
2015. 01. 08
: WAVEFORM NUMBER
A
B
C
D
E
F
G
H
I
3-59
J
K
L
3-60
M
N
O
P
Q
R
S
T
8. MAIN - AMP CIRCUIT DIAGRAM
12
11
10
i
9
m
8
7
jo
6
5
4
3
2
1
AMP
EAX66091702_1.0(1)-SD(#6)
2015. 01. 08
A
B
C
D
E
F
G
H
I
3-61
J
K
L
3-62
M
N
O
P
Q
R
S
T
9. MASTER VOLUME CIRCUIT DIAGRAM
12
11
10
i
9
m
8
7
jo
6
5
4
3
2
1
MASTER VOLUME
EAX64870202_1.0(0)-SD
2015. 01. 08
A
B
C
D
E
F
G
H
I
3-63
J
K
L
3-64
M
N
O
P
Q
R
S
T
10. CONTROL_A CIRCUIT DIAGRAM
12
11
10
i
9
m
8
7
jo
6
5
4
3
2
1
CONTROL_A
EAX64870302_1.0(0)-SD
2015. 01. 08
A
B
C
D
E
F
G
H
I
3-65
J
K
L
3-66
M
N
O
P
Q
R
S
T
11. VFD CIRCUIT DIAGRAM
12
11
10
i
9
m
8
7
jo
6
5
4
3
2
1
VFD
EAX65071102_1.0(0)-SD
2015. 01. 08
A
B
C
D
E
F
G
H
I
3-67
J
K
L
3-68
M
N
O
P
Q
R
S
T
12. MIC/ HP CIRCUIT DIAGRAM
12
11
10
i
9
m
8
7
jo
6
5
4
3
2
1
MIC/ HP
EAX66187402_1.0(0)-SD
2015. 01. 08
A
B
C
D
E
F
G
H
I
3-69
J
K
L
3-70
M
N
O
P
Q
R
S
T
13. TUNER/ AUX CIRCUIT DIAGRAM
12
11
10
i
9
m
8
7
jo
6
5
4
3
2
1
TUNER/ AUX
EAX66187502_1.0(0)-SD
2015. 01. 08
A
B
C
D
E
F
G
H
I
3-71
J
K
L
3-72
M
N
O
P
Q
R
S
T
CIRCUIT VOLTAGE CHART
1. ICs
Location
SPEC [V, mW]
2. CAPACITORS
VOLTAGE [V]
Location
SPEC [V, mW]
VOLTAGE [V]
IC200, IC203
D/A Converter
CPVDD/AVDD/DVDD :
3.0~3.6 V
CPVDD/AVDD/DVDD :
3.29 V
IC601
PWM
AVDD,AVDD_PWM, DVDD_
CORE : 0~3.6 V
AVDD,AVDD_PWM,DVDD_
CORE :3.29 V
IC201
PRE Amplifier
VCC: 5~14 V
VCC: 11.43 V
IC602~IC606
OP Amplifier
VCC: ~20 V
VCC: 5.06 V
IC202, IC600
LDO Voltage Requlator
Vin : 2.25~16 V
Vout : 1.25~15 V
Vin : 5.56 V
Vout : 5.01 V
IC70C~IC70E
OP Amplifier
VCC: ~20 V
IC204
A/D Converter
VA : 4.75~5.25 V
VD : 3.13~3.47 V
VLS : 3.13~5.25 V
VLC : 3.13~5.25 V
VA : 4.99 V
VD : 3.33 V
VLS : 3.33 V
VLC : 3.33 V
IC700~IC709
Power Driver
VB : 0~220 V
VAA : MAX 210 V
VDD : 2.3~5.5 V
VCC: 3.28 V
IC206, IC207
Audio Amplifier
VCC: 5.1 V
VB : -46.5 V
VAA : 5.01 V
Location
Value Capacitor
[uF]
Voltage_Spec
[V]
100 V-10 %
240 V/50 Hz+10 %
Measured voltage
[V]
Measured voltage
[V]
SMPS Board
C903
330 uF
450 V
395 V
395 V
C911
100 uF
50 V
14.8 V
15.8 V
C913
330 uF
450 V
395 V
395 V
C932
22 uF
50 V
14.8 V
14.8 V
C936
1000 uF
16 V
5.65 V
5.65 V
C947
100 uF
50 V
37.2 V
37.5 V
C956
470 uF
16 V
5.1 V
5.2 V
C957
100 uF
16 V
-5 V
-5 V
Vin : 2.7~5.5 V
Vin : 3.33 V
C958
220 uF
25 V
12 V
12 V
IC3A02
Voltage Regulator
Vin : 6~12 V
Vout : 4.88~5.12 V
Vin : 5.55 V
Vout : 5.01 V
C964
100 uF
25 V
11.99 V
11.98 V
IC3B02
Voltage Regulator
Vin : 6~12 V
Vout : 4.88~5.12 V
Vin : 5.59 V
Vout : 5.01 V
C966
1000 uF
80 V
-58 V
-58 V
C968
1000 uF
80 V
58 V
58 V
C975
330 uF
25 V
13.2 V
13.2 V
C993
68 uF
450 V
138 V
336 V
VCC : 4.3~13.2 V
VCC : 8.19 V
IC401
RF, Servo
DVDD,AVDD : 2.7~3.6 V
VDD_CORE : 1.75~1.95 V
DVDD,AVDD : 3.21 V
VDD_CORE : 1.85 V
IC402
DC/DC Converter
VIN : 3.5~28 V
VIN: 13.5 V
VOUT: 8.77 V
IC50A
Analog Switch
VCC: 2.3~3.6 V
VCC: 3.29 V
IC50C
DC/DC Converter
VIN : 3.5~28 V
VIN: 13.5 V
VOUT: 4.83 V
IC500
Voltage Detector
VCC: Max 18 V
Vcc : 3.9 V
Vout : 2.9 V
IC501
LDO Voltage Requlator
Vin : 2.5~6.5 V
Vout : 2.5~5 V
IC502
Voltage Regulator
Vin : Max 12 V
Vout : Max 10 V
VCC: Max 18 V
IC504
EEPROM
VCC : 1.8~5.5 V
IC508
Serial Flash Memory
Vcc : 2.7~3.6 V
jo
IC503
Voltage Detector
Vin : 5.56 V
Vout : 3.29 V
m
IC400
Motor Driver
i
IC3A01,IC3B01
Clock Driver
Main Board
C218
4.7 uF
50 V
1.9 V
1.9 V
C224
100 uF
16 V
11.2 V
11.2 V
C232
47 uF
16 V
4.9 V
4.9 V
C247
47 uF
16 V
4.9 V
4.9 V
C279
100 uF
16 V
3.2 V
3.2 V
C402
100
16 V
4.9 V
4.9 V
C404
47 uF
16 V
3.2 V
3.2 V
C40D
47
16 V
1.1 V
1.1 V
C414
47
16 V
1.5 V
1.5 V
C416
3.3 uF
50 V
1.1 V
1.1 V
C41F
220 uF
16 V
8.7 V
8.7 V
Vcc : 3.32 V
Vout : 3.32 V
C5003
47 uF
16 V
1.1 V
1.1 V
C504
47 uF
16 V
3.2 V
3.2 V
VCC : 3.34 V
C50D
1000 uF
6.3 V
3.3 V
3.3 V
C551
220 uF
6.3 V
3.1 V
3.1 V
Vin : 4.8 V
Vout : 3.3 V
Vcc : 3.33 V
C601
47 uF
16 V
5V
5V
VIN : 3.5~28 V
VIN: 5.57 V
VOUT: 1.2 V
C603
220 uF
16 V
3.2 V
3.2 V
IC509
SDRAM
C605
100 uF
16 V
1.2 V
1.2 V
VDD,VDDQ : 3.0~3.6 V
VDD,VDDQ : 3.29 V
C717
2200 uF
80 V
58.3 V
58.3 V
IC5000
Voltage Regulator
Vin : Max 12 V
Vout : Max 10 V
Vin : 3.29 V
Vout : 1.19 V
C718
2200 uF
80 V
58.3 V
58.3 V
C719
2200 uF
80 V
58.3 V
58.3 V
IC5001, IC506
DSP
VDD12 : 1.08~1.32 V
VDD33 : 3.0~3.6 V
VDD12 : 1.19 V
VDD33 : 3.27 V
C71B
2200 uF
80 V
58.3 V
58.3 V
C724
2200 uF
80 V
58.3 V
58.3 V
IC5002
Serial Flash Memory
Vcc : 2.7~3.6 V
Vcc : 3.29 V
C726
2200 uF
80 V
58.3 V
58.3 V
IC5003
SDRAM
C728
2200 uF
80 V
58.3 V
58.3 V
VDD,VDDQ : 3.0~3.6 V
VDD,VDDQ : 3.29 V
IC507
DC/DC Converter
3-73
3-74