LG 32LV3100 (CHASSIS:LP91U) Service Manual ▷ View online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
10/12/29
HDMI
+5V_HDMI_2
HPD_MST_2
TMDS2_RX2-
CEC
TMDS2_RXC-
TMDS2_RXC-
TMDS2_RXC+
TMDS1_RXC-
TMDS2_RX0+
+5V_HDMI_2
HPD_MST_1
CEC
TMDS1_RX2+
TMDS2_RX1+
+5V_MULTI
+5V_HDMI_1
TMDS2_RX0-
TMDS1_RX1-
TMDS2_RX1-
TMDS1_RX2-
+5V_MULTI
+5V_HDMI_1
TMDS1_RX0-
TMDS1_RX1+
TMDS1_RX0+
TMDS2_RX2+
TMDS1_RXC+
DDC_SDA2
DDC_SCL2
DDC_SDA1
DDC_SCL1
JP301
JP300
JP302
JP303
D300
KDS184S
KDS184S
A
1
C
A
2
D301
KDS184S
KDS184S
A
1
C
A
2
DDC_WP
DDC_WP
BSS83
Q303
READY
S
B
D
G
CEC
+3.3V_MST
CEC_C
D304
30V READY
CDS3C30GTH
R301
10K
R303
1K
R300
10K
R302
1K
R315
68K
READY
R313
0
R305
100
R304
100
C301
0.01uF
0.01uF
R331
100
R306
100
R307
100
C302
0.01uF
0.01uF
R327
100
R308
10K
R310
10K
R309
10K
R311
10K
R316
56K
READY
JK302
YKF45-7058V
14
NC
13
CEC
5 DATA1_SHIELD
20
SHIELD
12
CLK-
11
CLK_SHIELD
2 DATA2_SHIELD
19
HPD
18
+5V_POWER
10 CLK+
4 DATA1+
1 DATA2+
17
DDC/CEC_GND
9 DATA0-
8 DATA0_SHIELD
3 DATA2-
16
SDA
7 DATA0+
6 DATA1-
15
SCL
JK301
14
NC
13
CEC
5
DATA1_SHIELD
20
SHIELD
12
CLK-
11
CLK_SHIELD
2
DATA2_SHIELD
19
HPD
18
+5V_POWER
10
CLK+
4
DATA1+
1
DATA2+
17
DDC/CEC_GND
9
DATA0-
8
DATA0_SHIELD
3
DATA2-
16
SDA
7
DATA0+
6
DATA1-
15
SCL
R319
10K
10K
+5V_HDMI_3
+5V_MULTI
TMDS3_RX1-
DDC_SCL3
HPD_MST_3
TMDS3_RX0+
+5V_HDMI_3
R312
10K
DDC_WP
R318
100
TMDS3_RXC+
JP305
TMDS3_RXC-
DDC_SDA3
R320
10K
10K
R314
1K
TMDS3_RX1+
CEC
TMDS3_RX2+
R317
100
JP304
C300
0.01uF
25V
0.01uF
25V
TMDS3_RX2-
R329
100
D302
KDS184S
A
1
C
A
2
TMDS3_RX0-
JK303
RSD-105156-100
14
13
5
20
12
11
2
19
18
10
4
1
17
9
8
3
16
7
6
15
IC301-*2
AT24C02C-SSHM-T
HDMI2_EEPROM_ATMEL
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
IC302-*2
AT24C02C-SSHM-T
HDMI3_EEPROM_ATMEL
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
IC300-*2
AT24C02C-SSHM-T
HDMI1_EEPROM_ATMEL
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
D303
30V
BAT54_SUZHO
READY
Q300
2SC3875S
MMBT3904(NXP)
E
B
C
Q301
2SC3875S
MMBT3904(NXP)
E
B
C
Q302
2SC3875S
MMBT3904(NXP)
E
B
C
IC300-*1
R1EX24002ASAS0A
HDMI1_EEPROM_RENESAS
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
IC300
CAT24C02WI-GT3
HDMI1_EEPROM_CATAL
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
IC301-*1
R1EX24002ASAS0A
HDMI2_EEPROM_RENESAS
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
IC301
CAT24C02WI-GT3
HDMI2_EEPROM_CATAL
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
IC302-*1
R1EX24002ASAS0A
HDMI3_EEPROM_RENESAS
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
IC302
CAT24C02WI-GT3
HDMI3_EEPROM_CATAL
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
3 12
OPTION
SW_HPD : USE SW HPD (Default)
MST_HPD : USE MST HPD
’11 ATV(H6R)
LP91U
EAX64049202
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
10/12/29
IR
C402
47pF
50V
47pF
50V
READY
C400
470pF
50V
KEY1
ZD400
5.6B
I2C_S/T
5.6B
I2C_S/T
ZD401
5.6B
I2C_S/T
5.6B
I2C_S/T
ZD402
5.6B
5.6B
L401
I2C_S/T
500-ohm
L400
I2C_S/T
500-ohm
SUB_SCL
KEY2
IR
SUB_SDA
C407
0.1uF
0.1uF
READY
+3.3V_MST
+3.5V_MST
C408
0.1uF
READY
C406
0.1uF
50V
0.1uF
50V
READY
C405
100pF
50V
100pF
50V
PWM_LED
C401
100pF
50V
PWM_LED
100pF
50V
PWM_LED
+3.5V_MST
R400
10K
PWM_LED
+3.3V_MULTI
R405
10K
PWM_LED
R403
10K
PWM_LED
+3.5V_MST
R408
10K
PWM_LED
R411
4.7K
4.7K
PWM_LED
R404
0
READY
R402
0
READY
C403
470pF
50V
470pF
50V
SUB_SCL
LED_R
P400
12507WR-15L
11Y_SUB
1
EYEQ_SCL
2
EYEQ_SDA
3
GND
4
KEY1
5
KEY2
6
3.5V_ST
7
GND
8
LED_B
9
IR
10
GND
11
3.3V
12
LED_R
13
GND
14
S/T_SCL
16
.
15
S/T_SDA
IR_OUT
+3.5V_MST
R413
22
IR_OUT
R407
10K
10K
IR_OUT
+3.5V_MST
R401
47K
IR_OUT
R410
10K
IR_OUT
C409
0.1uF
16V
0.1uF
16V
C411
0.1uF
16V
0.1uF
16V
READY
C412
1000pF
50V
1000pF
50V
READY
C410
1000pF
50V
1000pF
50V
+3.3V_MULTI
R414
0
READY
R415
0
READY
P403
12507WR-12L
10Y_SUB
1
2
3
4
5
6
7
8
9
10
11
12
13
L402
PWM_LED
120-ohm
L408
120-ohm
READY
L403
120-ohm
L407
PWM_LED
120-ohm
BLM18PG121SN1D
L406
120-ohm
L404
120-ohm
L405
120-ohm
R406
10K
10K
R409
10K
10K
R412
1K
1K
IR_OUT
Q402
MMBT3904(NXP)
PWM_LED
E
B
C
Q403
MMBT3904(NXP)
IR_OUT
E
B
C
Q401
MMBT3904(NXP)
IR_OUT
E
B
C
Q400
MMBT3904(NXP)
PWM_LED
E
B
C
4 12
IR
’11 ATV(H6R)
LP91U
EAX64049202
IR OUT
THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
10/12/29
Audio amp
C500
1000pF
SW_RESET
R541 100
+3.3V_MST
R540
10K
R537
10K
MULTI_PW_SW
R539
0
READY
R538
0
READY
R536
47K
READY
R550
4.7K
4.7K
AUDIO_OUT
R553
1K
AUDIO_OUT
MNT_L_OUT
P_12V
R557
10K
AUDIO_OUT
R551
4.7K
AUDIO_OUT
C555
33pF 50V
AUDIO_OUT
C553
6800pF
50V
AUDIO_OUT
6800pF
50V
AUDIO_OUT
R552
1K
AUDIO_OUT
R559
6.8K
AUDIO_OUT
6.8K
AUDIO_OUT
C554
33pF 50V
AUDIO_OUT
C556
0.01uF
50V
0.01uF
50V
AUDIO_OUT
R556
5.6K
AUDIO_OUT
C552
6800pF
50V
AUDIO_OUT
6800pF
50V
AUDIO_OUT
P_12V
MNT_R_OUT
MNT_L_AMP
C551
0.1uF
16V
0.1uF
16V
AUDIO_OUT
R558
6.8K
AUDIO_OUT
6.8K
AUDIO_OUT
C550
0.1uF
16V
0.1uF
16V
AUDIO_OUT
MNT_R_AMP
R554
10K
AUDIO_OUT
P_12V
R555
5.6K
AUDIO_OUT
0.1uF
C519
50V
0.1uF
C509
C532
390pF
50V
D502
100V
1N4148W
READY
C521
10uF
35V
10uF
35V
C547
0.01uF
50V
0.01uF
50V
READY
R513
0
0
0.1uF
C536
50V
C546
22pF
50V
22pF
50V
READY
C504
100pF
50V
C531
390pF
50V
R506
33
C540
0.1uF
16V
0.1uF
16V
C524
22000pF
50V
R524
12
R514
100
READY
C518
22000pF
50V
C506
1000pF
50V
R529
4.7K
SPK_R-
C528
10uF
35V
10uF
35V
0.1uF
C538
50V
C542
0.1uF
16V
0.1uF
16V
IC500
AP1117E18G-13
2
OUT
3
IN
1
ADJ/GND
R521
12
TP502
SPK_R-
L501
BLM18PG121SN1D
R500
1
C510
18pF
50V
18pF
50V
I2S_SDO
+1.8V_AMP
C507
18pF
50V
18pF
50V
L508
NRS6045T100MMGK
10.0uH
C511
10uF
10uF
10V
READY
L506
NRS6045T100MMGK
10.0uH
MULTI_PW_SW
L509
NRS6045T100MMGK
10.0uH
SPK_R+
R507
33
R527
4.7K
+1.8V_AMP
C544
22pF
50V
22pF
50V
READY
C534
0.47uF
50V
R522
12
C535
0.47uF
50V
+3.3V_MULTI
+1.8V_AMP
D503
100V
1N4148W
READY
R523
12
D501
100V
1N4148W
READY
D504
100V
1N4148W
READY
0.1uF
C513
16V
C541
10uF
10V
10uF
10V
M_SCL
C502
0.1uF
16V
R530
4.7K
+1.8V_AMP
I2S_MCLK
C520
1uF
25V
C516
1000pF
50V
1000pF
50V
IC501
NTP-7100
EAN60969603
1
BST1A
2
VDR1A
3
/RESET
4
AD
5
DGND_1
6
GND_IO
7
CLK_I
8
VDD_IO
9
DGND_PLL
10
AGND_PLL
11
LF
12
AVDD_PLL
13
DVDD_PLL
14
GND
15
DGND_2
16
DVDD
17
SDATA
18
WCK
19
BCK
20
SDA
21
SCL
22
MONITOR0
23
MONITOR1
24
MONITOR2
25
/FAULT
26
VDR2B
27
BST2B
28
PGND2B_1
29
PGND2B_2
30
OUT2B_1
31
OUT2B_2
32
PVDD2B_1
33
PVDD2B_2
34
PVDD2A_1
35
PVDD2A_2
36
OUT2A_1
37
OUT2A_2
38
PGND2A_1
39
PGND2A_2
40
BST2A
41
VDR2A
42
NC
43
VDR1B
44
BST1B
45
PGND1B_1
46
PGND1B_2
47
OUT1B_1
48
OUT1B_2
49
PVDD1B_1
50
PVDD1B_2
51
PVDD1A_1
52
PVDD1A_2
53
OUT1A_1
54
OUT1A_2
55
PGND1A_1
56
PGND1A_2
57
EP_PAD
+24V_AMP
R517
10K
READY
R526
12
SPK_L+
R535
3.3
3.3
READY
AMP_RESET
SPK_L-
L502
BLM18PG121SN1D
R520
12
L504
BLM18PG121SN1D
P501
WAFER-ANGLE
1
2
3
4
C517
1uF
25V
C508
1000pF
50V
R525
12
C529
390pF
50V
R528
4.7K
C501
10uF
10V
READY
C522
1uF
25V
0.1uF
C526
50V
R519
12
C530
390pF
50V
C525
22000pF
50V
M_SDA
C545
22pF
50V
22pF
50V
READY
0.1uF
C505
16V
SPK_R+
+3.5V_MST
L507
NRS6045T100MMGK
10.0uH
R508
3.3K
C514
22000pF
50V
I2S_WS
R503
100
MULTI_PW_SW
R505
100
C512
1uF
25V
+3.3V_MULTI
I2S_SCK
R515
10K
READY
SPK_L-
C503
10uF
10V
READY
0.1uF
C527
50V
0.1uF
C515
50V
R504
100
+24V_AMP
0.1uF
C537
50V
SPK_L+
0.1uF
C539
50V
AMP_RESET
SPK_OUT_MUTE
R512
0
EXT_SPK
IC502
AS324MTR-E1
AUDIO_OUT
3 INPUT1+
2 INPUT1-
4 VCC
1 OUT1
6 INPUT2-
5 INPUT2+
7 OUT2
8
OUT3
9
INPUT3-
10
INPUT3+
11
GND
12
INPUT4+
13
INPUT4-
14
OUT4
Q501
MMBT3904(NXP)
READY
E
B
C
Q500
MMBT3904(NXP)
E
B
C
Q511
MMBT3904(NXP)
AUDIO_OUT
E
B
C
Q510
MMBT3904(NXP)
AUDIO_OUT
E
B
C
5 12
AMP :GAIN X 4
AUDIO_OUT BLOCK
120 mA
SPEAKER_R
Vd=1.4V
SPEAKER_L
’11 ATV(H6R)
LP91U
EAX64049202
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
10/12/11
TUNER
MAIN_SIF
0.01uF
C601
50V
M_SDA
C602
27pF
27pF
50V
+5V_TUNER
TV_MAIN
M_SCL
+5V_TUNER
C604
50V
50V
READY
C600
27pF
50V
L602
READY
10uH
C607
82pF
50V
82pF
50V
READY
C608
10uF
16V
10uF
16V
L600
120-ohm
READY
Q602
ISA1530AC1
E
B
C
R602
4.7K
4.7K
R606
220
R607
220
C605
100uF
16V
100uF
16V
READY
C606
100uF
16V
100uF
16V
READY
R605
47
R604
47
C603
0.1uF
50V
0.1uF
50V
R600
0
R601
0
TU600
TAFJ-Z001D(P)
TAFJ-Z001D(P)
5
MOPLL_AS
11
VIDEO
2
NC_2
10
NC_4
4
RF_AGC
1
NC_1
9
SIF
8
NC_3
3
+B[5V]
7
SDA
6
SCL
12
GND
13
SHIELD
6 12
Near the pin
’11 ATV(H6R)
LP91U
EAX64049202
* Replacement item
- EBL60720101 : TAFJ-Z001D
- EBL60720102 : TAFJ-Z001D(P)
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