LG 37LV3730 (CHASSIS:LB12B) 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.
DSUB_B+
C305
1uF 10V
INCM_VID_AV2
INCM_G
C307
1uF 10V
INCM_G
C330
0.1uF
INCM_AUD_AV2
R328
100
SC/COMP2_L_IN
R317
36
R327
100
C311
1uF 10V
R326
100
R324
0
C322
0.1uF
C335
0.1uF
INCM_SIF
SC_B/COMP2_Pb
HP_LOUT_P
SC_RE2
INCM_AUD_PC
C319
0.1uF
C306
1uF 10V
AUD_SCK
INCM_B
DSUB_G+
C339
22pF
22pF
OPT
C302
33pF
50V
33pF
50V
AV1_R_IN
INCM_VID_SC/COMP2
C320
0.1uF
SC/COMP2_R_IN
DSUB_VSYNC
TU_RESET_SUB
DSUB_HSYNC
R320
12K
OPT
C334
0.1uF
INCM_R
C328
0.1uF
R304
36
INCM_VID_COMP1
C338
22pF
22pF
OPT
INCM_TUNER
PC_R_IN
SDA3_3.3V
SCL3_3.3V
R303
36
SC_RE1
AUD_MASTER_CLK
C312
1uF 10V
AV2_CVBS_IN
C303
0.1uF
R329
100
C336
0.1uF
INCM_AUD_PC
C324
0.1uF
SC_R/COMP2_Pr
HP_ROUT_N
HP_DET
C340
33pF
33pF
OPT
C337
22pF
22pF
OPT
C329
0.1uF
INCM_VID_SC
C314
1uF 10V
SC_CVBS_IN
INCM_VID_AV1
SC_FB
R316
36
HP_ROUT_P
TU_SIF
AUD_LRCH
C332
0.1uF
C310
1uF 10V
C323
0.1uF
INCM_B
C313
1uF 10V
C325
0.1uF
R319
10K
OPT
R306
75
1%
OPT
SCART1_Lout_N
M_REMOTE_TX
R311
36
SCART1_Lout_P
C321
0.1uF
INCM_TUNER
TU_RESET
INCM_AUD_SC/COMP2
AV1_CVBS_IN
R314
12K
PC_L_IN
R322
0
C333
0.1uF
R323
0
C318
0.1uF
C316
1uF 10V
DSUB_R+
C331
0.1uF
INCM_AUD_SC/COMP2
SCART1_Rout_P
+3.3V_Normal
INCM_SIF
C317
0.1uF
INCM_AUD_AV2
INCM_R
TU_CVBS
AV1_L_IN
C315
1uF 10V
R315
120
OPT
S2_RESET
C326
0.1uF
INCM_VID_AV2
C327
0.1uF
INCM_AUD_AV1
COMP1_Pb
C304
0.1uF
INCM_VID_AV1
SCART1_Rout_N
INCM_VID_COMP1
AV2_R_IN
C309
1uF 10V
C301
33pF
50V
33pF
50V
AV1_CVBS_DET
R313
10K
AV2_L_IN
SC_G/COMP2_Y
COMP1_Y
HP_LOUT_N
SPDIF_OUT
+2.5V_BCM35230
C308
1uF 10V
R321
0
R305
240
OPT
AUD_LRCK
+2.5V_BCM35230
INCM_VID_SC/COMP2
INCM_AUD_AV1
R312
36
/RST_HUB
COMP1_Pr
R302
1.2K
R301
1.2K
LGE35230(BCM35230KFSBG)
IC101
NON_BCM_CAP
VI_R
B6
VI_INCM_R
A6
VI_G
C7
VI_INCM_G
A7
VI_B
B7
VI_INCM_B
C8
HSYNC_IN
C13
VSYNC_IN
A13
VI_Y1
C9
VI_PR1
A9
VI_PB1
B9
VI_INCM_COMP1
B8
VI_SC_R1
C11
VI_SC_G1
A10
VI_SC_B1
B10
VI_INCM_SC1
C10
VI_FB_1/GPIO
D10
VI_FS1
F13
VI_SC_R2
A12
VI_SC_G2
C12
VI_SC_B2
B12
VI_INCM_SC2
B11
VI_FB_2/GPIO
E12
VI_FS2
E14
VI_L1
E15
VI_C1_1
F17
VI_INCM_LC1_1
E16
VI_C1_2
F14
VI_INCM_LC1_2
E11
VI_CVBS1
C18
VI_INCM_CVBS1
B18
VI_CVBS2
A18
VI_INCM_CVBS2
C19
VI_CVBS3
A19
VI_INCM_CVBS3
B19
VI_CVBS4
C20
VI_INCM_CVBS4
B20
VI_SIF1_1
E19
VI_INCM_SIF1_1
D19
VI_SIF1_2
E10
VI_INCM_SIF1_2
F11
LGE35230(BCM35230KFSBG)
IC101
NON_BCM_CAP
SPDIF_INC_P
B15
SPDIF_INC_N
C15
SPDIF_IND_P
C14
SPDIF_IND_N
B14
I2SSCK_IN/GPIO
G4
I2SWS_IN
F4
I2SSD_IN/GPIO
G5
AADC_LINE_L1
C25
AADC_LINE_R1
B24
AADC_INCM1
A24
AADC_LINE_L2
E22
AADC_LINE_R2
E23
AADC_INCM2
D23
AADC_LINE_L3
C24
AADC_LINE_R3
C23
AADC_INCM3
B23
AADC_LINE_L4
E21
AADC_LINE_R4
D21
AADC_INCM4
D22
AADC_LINE_L5
B22
AADC_LINE_R5
C22
AADC_INCM5
A22
AADC_LINE_L6
F21
AADC_LINE_R6
D20
AADC_INCM6
E20
AADC_LINE_L7
A21
AADC_LINE_R7
C21
AADC_INCM7
B21
I2SSCK_OUTA/GPIO
AF8
I2SWS_OUTA/GPIO
AF9
I2SSD_OUTA0/GPIO
AG9
I2SSOSCK_OUTA/GPIO
AC9
I2SSD_OUTA1/GPIO
AD8
I2SSD_OUTA2/GPIO
AD9
I2SSCK_OUTC/GPIO
E2
I2SWS_OUTC/GPIO
F2
I2SSD_OUTC/GPIO
E3
I2SSOSCK_OUTC/GPIO
F3
I2SSCK_OUTD/GPIO
G2
I2SWS_OUTD/GPIO
G3
I2SSD_OUTD/GPIO
G1
I2SSOSCK_OUTD/GPIO
H1
SPDIF_OUTA/GPIO
B13
AUDMUTE_0/GPIO
AG8
AUDMUTE_1
E13
ADAC_AL_N
C28
ADAC_AL_P
C27
ADAC_AR_N
D28
ADAC_AR_P
D27
ADAC_CL_N
C26
ADAC_CL_P
A27
ADAC_CR_N
B27
ADAC_CR_P
B28
ADAC_DL_N
B25
ADAC_DL_P
A25
ADAC_DR_N
A26
ADAC_DR_P
B26
R310
0
R318
0
R325
0
NON_EU
R325-*1
10
EU
LGE35230
IC101-*1
BCM_CAP
VI_R
B6
VI_INCM_R
A6
VI_G
C7
VI_INCM_G
A7
VI_B
B7
VI_INCM_B
C8
HSYNC_IN
C13
VSYNC_IN
A13
VI_Y1
C9
VI_PR1
A9
VI_PB1
B9
VI_INCM_COMP1
B8
VI_SC_R1
C11
VI_SC_G1
A10
VI_SC_B1
B10
VI_INCM_SC1
C10
VI_FB_1/GPIO
D10
VI_FS1
F13
VI_SC_R2
A12
VI_SC_G2
C12
VI_SC_B2
B12
VI_INCM_SC2
B11
VI_FB_2/GPIO
E12
VI_FS2
E14
VI_L1
E15
VI_C1_1
F17
VI_INCM_LC1_1
E16
VI_C1_2
F14
VI_INCM_LC1_2
E11
VI_CVBS1
C18
VI_INCM_CVBS1
B18
VI_CVBS2
A18
VI_INCM_CVBS2
C19
VI_CVBS3
A19
VI_INCM_CVBS3
B19
VI_CVBS4
C20
VI_INCM_CVBS4
B20
VI_SIF1_1
E19
VI_INCM_SIF1_1
D19
VI_SIF1_2
E10
VI_INCM_SIF1_2
F11
R330
75
1%
OPT
R331
75
1%
OPT
R332
75
1%
OPT
R333
75
1%
OPT
R335
75
1%
OPT
R334
75
1%
OPT
BCM35230
3
MAIN AUDIO/VIDEO
50
Run Along DSUB_R Trace
PHONE JACK
Near
TU2101/2
TU2201/2/3
TU2201/2/3
Near
Near
AUDIO INCM
JK1104
Near
Near
Near
JK1102
Route Between PC_L_IN & PC_R_IN Trace
Route Between AV2_L_IN & AV2_R_IN Trace
Run Along AV1_CVBS Trace
JK1102
Run Along TUNER_CVBS_IF_P Trace
JK1103
JK2501
JK2501
Run Along DSUB_G Trace
Run Along COMP_Y_IN,COMP_Pr_IN,COMP_Pb_IN Trace
Run Along COMP_Y_IN,COMP_Pr_IN,COMP_Pb_IN/SC R,G,B Trace
VIDEO INCM
Route Along With TUNER_SIF_IF_N
Run Along DSUB_B Trace
Near
Run Along AV2_CVBS Trace
Near
JK1103
JK2501
JK2501
P801
JK1101
TU2101/2
TU2201/2/3
TU2201/2/3
Route Between AV1_L_IN & AV1_R_IN Trace
Route Between SC/COMP2_L_IN & SC/COMP2_R_IN Trace
Near
P801
Near
Near
P801
Near
JK801
Near
JK1104
BCM35230_with_CAP_220pF
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.
+3.5V_ST
EDID_WP
C602
13pF
50V
R645
270K
OPT
SCART_MUTE
KEY2
NEC_ISP_Rx
C607
15pF
R624
10K
10YEAR_TOOL
NEC_RXD
MICOM_RESET
R619
22
SIDE_HP_MUTE
R612
10K
LCD/OLED
X601
10MHz
POWER_ON/OFF1
R613
10K
TOUCH_KEY
R616
22
+3.5V_ST
R622
10K
I2C LED
R628
4.7K
+3.5V_ST
R644
47K
KEY1
+3.5V_ST
+3.5V_ST
+3.5V_ST
R617
22
R615
22
R641
0
MODEL1_OPT_0
MODEL1_OPT_1
C609
1uF
C604
0.1uF
0.1uF
RL_ON
R626
4.7K
R647
20K
1/16W
1%
1%
+3.5V_ST
OCD1A
EEPROM_SCL
INSTANT_MODE
MODEL1_OPT_1
R642
4.7M
OPT
AMP_RESET_N
S/T_SCL
C605
0.1uF
FLMD0
EEPROM_SDA
LED_B/LG_LOGO
R
6
3
8
2
2
OPT
R
6
0
1
4
7
K
AMP_MUTE
R625
10K
11YEAR_TOOL
R646
20K
1/16W
1%
GND
R632
22
MODEL1_OPT_2
MODEL1_OPT_0
R614
10K
TACT_KEY
R602
100
R637
47K
OPT
NEC_ISP_Tx
C606
15pF
R610
10K
R611
10K
PDP/3D
X602
32.768KHz
OCD1B
R605
100
MODEL1_OPT_2
R621
22
INV_CTL
R629
22
NEC_ISP_Tx
R639
10K
R606
10K
NEC_TXD
R607
10K
+3.5V_ST
R603
100
PANEL_CTL
MODEL1_OPT_3
MICOM_DOWNLOAD
+3.5V_ST
POWER_ON/OFF2_1
GND
R631
22
NEC_ISP_Rx
R604
100
R643
22
S/T_SDA
LED_R/BUZZ
C603
13pF
50V
C608
0.1uF
16V
0.1uF
16V
R
6
4
0
1
0
K
R623
10K
PWM_LED
FLMD0
EEPROM_SDA
HDMI_CEC
SDA2_3.3V
R630
22
WIRELESS_DET
NEC_ISP_Rx
IC602
uPD78F0514
NEC_MICOM
1
P60/SCL0
2
P61/SDA0
3
P62/EXSCL0
4
P63
5
P33/TI51/TO51/INTP4
6
P75
7
P74
8
P73/KR3
9
P72/KR2
10
P71/KR1
11
P70/KR0
12
P32/INTP3/OCD1B
13
P31/INTP2/OCD1A
14
P30/INTP1
15
P17/TI50/TO50
16
P16/TOH1/INTP5
17
P15/TOH0
18
P14/RXD6
19
P13/TXD6
20
P12/SO10
21
P11/SL10/RXD0
22
P10/SCK10/TXD0
23
AVREF
24
AVSS
25
ANI7/P27
26
ANI6/P26
27
ANI5/P25
28
ANI4/P24
29
ANI3/P23
30
ANI2/P22
31
ANI1/P21
32
P20/ANI0
33
P130
34
P01/TI010/TO00
35
P00/TI000
36
P140/PCL/INTP6
37
P120/INTP0/EXLVI
38
P41
39
P40
40
RESET
41
P124/XT2/EXCLKS
42
P123/XT1
43
FLMD0
44
P122/X2/EXCLK/OCD0B
45
P121/X1/OCD0A
46
REGC
47
VSS
48
VDD
POWER_ON/OFF2_2
R649
0
OPT
OCD1A
MICOM_DOWNLOAD
+3.5V_ST
IR
POWER_DET
MICOM_RESET
MODEL1_OPT_3
P601
12505WS-12A00
DEBUG_MICOM
1
2
3
4
5
6
7
8
9
10
11
12
13
OCD1B
IC601
M24C16-WMN6T
3
NC/E2
2
NC/E1
4
VSS
1
NC/E0
5
SDA
6
SCL
7
WC
8
VCC
NEC_ISP_Tx
EEPROM_SCL
R627
4.7K
SCL2_3.3V
+3.5V_ST
R636
4.7K
R633
22
22
OPT
SOC_RESET
WIRELESS_PWR_EN
Q601
2SC3052
2SC3052
E
B
C
SW1
JTP-1127WEM
DEBUG_MICOM_RESET
1
2
4
3
R648
10K
BCM35230
MICOM
EEPROM for Micom
30
MODEL_OPT_2
MICOM MODEL OPTION
PWM_LED
LOW
11
MODEL_OPT_0
PIN NAME
31
8
HIGH
For Debug
11YEAR_TOOL
(11 SENSOR)
(11 SENSOR)
10YEAR_TOOL
(10 SENSOR)
(10 SENSOR)
50
PDP/3D
6
MODEL OPTION
MODEL_OPT_3
TACT_KEY
10Mhz Crystal
LCD/OLED
MODEL_OPT_1
I2C_LED
TOUCH_KEY
PIN NO.
HIGH
LOW_SMALL
MODEL_OPT_3
TBD
1
LCD
1
0
0
1
0
MODEL_OPT_2
MODEL_OPT_1
OLED
3D
0
0
1
0
1
PDP
LOW
1
NEC MICOM
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.
SCL2_3.3V
R1602
33
LPB_42/47/55
SDA2_3.3V
R1601
33
LPB_42/47/55
L/DIM0_MOSI
L/DIM0_SCLK
L/DIM0_VS
P1601
12507WR-08L
1
2
3
4
5
6
7
8
9
50
BCM35230
16
L_DIMMING
[Local Dimming Block]
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