LG 42LP860H (CHASSIS:LD33B) 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.
HDMI_HPD_4_JACK
D2+_HDMI4_JACK
D0-_HDMI4_JACK
D2-_HDMI4_JACK
R3307
100K
5V_HDMI_4_JACK
R3311
1K
D0+_HDMI4_JACK
R3308
100
R3309
100
CK-_HDMI4_JACK
CK+_HDMI4_JACK
R3310
1K
DDC_SCL_4_JACK
D1+_HDMI4_JACK
DDC_SDA_4_JACK
D1-_HDMI4_JACK
CEC_REMOTE
R3312
4.7K
NON_HDMI_EXT_EDID
Q3301
MMBT3904(NXP)
E
B
C
5V_HDMI_3_JACK
D0-_HDMI3_JACK
Q3303
MMBT3904(NXP)
E
B
C
CK+_HDMI3_JACK
CEC_REMOTE
HDMI_HPD_3_JACK
D2-_HDMI3_JACK
R3329
100
DDC_SDA_3_JACK
D1+_HDMI3_JACK
R3327
100K
R3336
4.7K
NON_HDMI_EXT_EDID
D1-_HDMI3_JACK
R3328
100
D2+_HDMI3_JACK
DDC_SCL_3_JACK
D0+_HDMI3_JACK
CK-_HDMI3_JACK
R3331
1K
R3330
1K
R3303
120K
CEC_REMOTE
R3302
27K
27K
RUE003N02
Q3300
HDMI_CEC_FET_ROHM
S
D
G
+3.5V_ST
HDMI_CEC
D3304
BAT54_SUZHO
Q3300-*1
SI1012CR-T1-GE3
SI1012CR-T1-GE3
HDMI_CEC_FET_VISHAY
S
D
G
IR_OUT_HDMI2
IR_OUT_HDMI3
HDMI_HPD_4_JACK
MTK_HPD_2
VA3300
ESD_HDMI
VA3301
ESD_HDMI
D3305
RCLAMP0524PA
RCLAMP0524PA
OPT
1
8
2
7
3
6
4
5
9
10
D3306
RCLAMP0524PA
RCLAMP0524PA
OPT
1
8
2
7
3
6
4
5
9
10
VA3303
ESD_HDMI
VA3304
ESD_HDMI
VA3310
ESD_HDMI
VA3309
ESD_HDMI
D3309
RCLAMP0524PA
RCLAMP0524PA
OPT
1
8
2
7
3
6
4
5
9
10
D3310
RCLAMP0524PA
RCLAMP0524PA
OPT
1
8
2
7
3
6
4
5
9
10
VA3312
ESD_HDMI
VA3311
ESD_HDMI
JK3303
51U019S-312HFN-E-R-B-LG
EAG62611204
14
NC
13
CE_REMOTE
5
D1_GND
20
BODY_SHIELD
GND
12
CK-
11
CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17
GND
9
D0-
8
D0_GND
3
D2-
16
DDC_DATA
7
D0+
6
D1-
15
DDC_CLK
R3377
22
R3392
22K
HDMI_EXT_EDID
Q3309
MMBT3904(NXP)
HDMI_EXT_EDID
HDMI_EXT_EDID
E
B
C
DDC_SDA_2_JACK
R3383
22
22
HDMI_EXT_EDID
R3320
22
HDMI_EXT_EDID
R3324
47K
EDID_WP_MTK
DDC_SCL_2_JACK
R3347
22
22
HDMI_EXT_EDID
R3384
22
HDMI_EXT_EDID
5V_HDMI_3_JACK
DDC_SDA_3_JACK
R3337
47K
IC3305
M24C02-RMN6T
HDMI_EXT_EDID
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
R3339
47K
R3385
22
22
HDMI_EXT_EDID
Q3310
MMBT3904(NXP)
HDMI_EXT_EDID
E
B
C
5V_HDMI_2_JACK
EDID_WP_MTK
R3393
22K
HDMI_EXT_EDID
C3301
0.1uF
16V
R3394
10K
HDMI_EXT_EDID
R3389
10K
HDMI_EXT_EDID
R3395
22K
HDMI_EXT_EDID
EDID_WP2
IC3304
M24C02-RMN6T
HDMI_EXT_EDID
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
R3396
100K
HDMI_EXT_EDID
EDID_WP3
R3326
47K
R3397
10K
HDMI_EXT_EDID
EDID_WP1
C3302
0.1uF
16V
R3340
47K
+5V_NORMAL
R3319
22
22
HDMI_EXT_EDID
R3379
22
HDMI_EXT_EDID
R3380
22
22
HDMI_EXT_EDID
IC3306
M24C02-RMN6T
HDMI_EXT_EDID
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
+5V_NORMAL
C3303
0.1uF
16V
EDID_WP2
Q3308
MMBT3904(NXP)
HDMI_EXT_EDID
E
B
C
R3398
100K
HDMI_EXT_EDID
EDID_WP_MTK
DDC_SDA_4_JACK
DDC_SCL_3_JACK
R3378
22
22
HDMI_EXT_EDID
5V_HDMI_4_JACK +5V_NORMAL
DDC_SCL_4_JACK
R3338
47K
R3391
100K
HDMI_EXT_EDID
HDMI_EXT_EDID
D3302
MMBD6100
A
2
C
A
1
EDID_WP1
D3303
MMBD6100
A
2
C
A
1
EDID_WP3
D3301
MMBD6100
A
2
C
A
1
HDMI_HPD_2_JACK
MTK_HPD_1
R3343
22
HDMI_HPD_3_JACK
MTK_HPD_3
R3346
22
R3372
10K
OPT
R3321
4.7K
HDMI_EXT_EDID
+3.3V_NORMAL
R3323
4.7K
HDMI_EXT_EDID
+3.3V_NORMAL
R3373
10K
OPT
JK3301
YKF45-7058V
14
NC
13
CE_REMOTE
5
D1_GND
20
GND
12
CK-
11
CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17
GND
9
D0-
8
D0_GND
3
D2-
16
DDC_DATA
7
D0+
6
D1-
15
DDC_CLK
D1-_HDMI2_JACK
D3308
RCLAMP0524PA
RCLAMP0524PA
OPT
1
8
2
7
3
6
4
5
9
10
VA3306
ESD_HDMI
JK3302-*1
YKF45-7058V
NON_ScrewHole
14
NC
13
CE_REMOTE
5
D1_GND
20
GND
12
CK-
11
CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17
GND
9
D0-
8
D0_GND
3
D2-
16
DDC_DATA
7
D0+
6
D1-
15
DDC_CLK
CK+_HDMI2_JACK
D3307
RCLAMP0524PA
RCLAMP0524PA
OPT
1
8
2
7
3
6
4
5
9
10
5V_HDMI_2_JACK
R3341
0
OPT
Q3302
MMBT3904(NXP)
E
B
C
R3318
4.7K
NON_HDMI_EXT_EDID
R3316
1K
JK3302
YKF45-7054V
ScrewHole
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
VA3308
ESD_HDMI
DDC_SDA_2_JACK
R3322
4.7K
HDMI_EXT_EDID
DDC_SCL_2_JACK
+3.3V_NORMAL
D0-_HDMI2_JACK
CK-_HDMI2_JACK
IR_OUT_HDMI1
R3317
1K
HDMI_HPD_2_JACK
R3314
100
VA3305
ESD_HDMI
D2-_HDMI2_JACK
R3313
100K
CEC_REMOTE
HDMI_ARC
R3315
100
D0+_HDMI2_JACK
R3374
10K
OPT
D1+_HDMI2_JACK
VA3307
ESD_HDMI
D2+_HDMI2_JACK
UI : HDMI2
UI : HDMI3
33
HDMI
2012.12.10
For CEC
From HDMI Connector
To NEC
xxLP860H-ZA
EDID
UI : HDMI1
Fiber Optic
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.
R3620
2.7K
OPT
+3.3V_NORMAL
C3615
0.1uF
0.1uF
16V
SPDIF_OUT
R3615
33
33
D3613
5.5V
5.5V
ADUC 5S 02 0R5L
OPT
JP3606
JP3607
CLK_COM5
CLK_DATA3
CLK_DATA1
CLK_DATA5
CLK_DATA6
CLK_DATA4
JK3603
SPG09-DB-010
1
RED
2
GREEN
3
BLUE
4
GND_1
5
DDC_GND
6
RED_GND
7
GREEN_GND
8
BLUE_GND
9
NC
10
SYNC_GND
11
GND_2
12
DDC_DATA
13
H_SYNC
14
V_SYNC
15
DDC_CLOCK
16
SHILED
CLK_COM2
CLK_DATA7
CLK_COM4
CLK_COM3
CLK_DATA2
CLK_COM1
HP_ROUT
HP_DET
R3601
10K
10K
HP_OUT
HP_LOUT
JK3605
KJA-PH-0-0177
EAG61030001
HP_OUT
3
DETECT
4
L
5
GND
1
R
D3601
5.6V
5.6V
OPT
+3.3V_NORMAL
JK3602
JST1223-001
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
R3635
470
R3634
470
R3633
470
R3632
470
R3631
470
R3630
470
R3629
470
R3628
0
R3627
0
R3626
0
R3625
0
R3624
0
JP3605
R3623
10K
10K
+3.5V_ST
CLOCK_DET
D-SUB 15P FOR LED CLOCK
SPDIF OUT
36
CLOCK/SPDIF/HP
2012.12.10
xxLP860H-ZA
LED CLOCK/SPDIF/HP
HEADPHONE JACK
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.
C3802
0.1uF
C3803
0.1uF
+3.5V_ST
IR_OUT_RS232C
R3814
4.7K
C3801
0.1uF
JK3803
SPG09-DB-009
1
2
3
4
5
6
7
8
9
10
IC3800
MAX3232CDR
EAN41348201
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
DOUT2
8
RIN2
9
ROUT2
10
DIN2
11
DIN1
12
ROUT1
13
RIN1
14
DOUT1
15
GND
16
VCC
R3811
4.7K
C3800
0.1uF
R3821
100
R3820
100
+3.5V_ST
EXT_12V
RS232_RX
RS232_TX
D3804
20V
20V
OPT
D3805
20V
20V
OPT
L3802
SS_OLD
L3801
SS_OLD
EXT_5V
C3804
0.1uF
JK_DBG_TX
JK_DBG_RX
MTK_DBG_TX
JP3802
DBG_SW
C3814
0.1uF
0.1uF
IC3805
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
NEC_DBG_TXD
C3818
1000pF
50V
OPT
UART_DBG_SW
EXT_SPK_VOL+
JK_DBG_TX
D3806
5.6V
OPT
IC3808
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
NEC_DBG_RXD
C3815
0.1uF
0.1uF
+3.5V_ST
IC3806
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
C3817
0.1uF
0.1uF
+3.5V_ST
+3.5V_ST
JK_DBG_RX
EXT_SPK_VOL-
MTK_DBG_RX
IC3807
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
C3819
1000pF
50V
OPT
D3807
5.6V
OPT
JP3801
C3816
0.1uF
JK3801
PEJ027-04
EXT_SPK_CONTROL
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
C3821
0.1uF
0.1uF
C3820
0.1uF
0.1uF
IC3809
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
IC3810
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
+3.5V_ST
EEPROM_SW
SDA_NVRAM
SCL_NVRAM
I2C_SDA5
NEC_EEPROM_SDA
NEC_EEPROM_SCL
I2C_SCL5
+3.5V_ST
D3803
50V
BAP70-02
R3834
1K
1K
R3849
3.6K
R3851
3.6K
R3844
4.7K
R3845
4.7K
+3.5V_ST
+3.5V_ST
+3.3V_NORMAL
+3.3V_NORMAL
IC3812
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
MTK_DBG_TX
RS232_TX
C3811
0.1uF
0.1uF
+3.5V_ST
UART_SW1
NEC_TX3
C3822
0.1uF
0.1uF
R3866
0
OLD_UART
IC3804
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
R3867
0
OLD_UART
IC3802
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
RS232_RX
UART_SW3
NEC_RX3
MTK_DBG_RX
MTK_NEC_TX
R3843
22
C3825
0.1uF
0.1uF
NEW_UART
R3868
0
OLD_UART
R3846
22
C3813
0.1uF
0.1uF
IC3813
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
NEW_UART
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
MTK_NEC_RX
IC3814
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
NEW_UART
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
R3864
0
OLD_UART
UART_SW2
SOC_RX
+3.5V_ST
C3824
0.1uF
0.1uF
NEW_UART
C3823
0.1uF
0.1uF
+3.5V_ST
NEC_TX0
IC3811
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
NEC_RX0
SOC_TX
L3801-*1
CB2012PK501T
SAMHWA_NEW
L3802-*1
CB2012PK501T
SAMHWA_NEW
RS232C
38
RS232/UART
2012.12.10
1A@5V /1A@12V FOR COMMERCIAL(RS-232C POWER)
xxLP860H-ZA
EXT_SPK_CONTROL & DBG OUT
CONNECTION
UART DBG SWITCH
B0 - A
EXT.SPK VOL Control
B1 - A
B0 - A
DEBUG_NEC/MTK
Debug MTK
Debug NEC
CONNECTION
B1 - A
L
UART_DBG_SW
L
DBG_SW
H
H
NVRAM I2C SWITCH
B0 - A
NVRAM - NEC
H
L
CONNECTION
NVRAM - MTK
UART_SW2
B1 - A
H
L
H
B1 - A
B0 - A
UART_SW3
B0 - A
CONNECTION
UART_SW2
B1 - A
H
CONNECTION
L
MTK - RS232C ADJ.
RS232C - NEC_UART3,INTERACTIVE
CONNECTION
EXT UART SWITCH
B0 - A
MTK - NEC_UART3,NEC USB D/L
MTK - NEC_URAT0,NORMAL COMM.
B1 - A
MTK - NEC_UART3,NEC USB D/L
L
DBG_SW
MTK - PHONE JK. DEBUG
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.
IR
+3.5V_ST
+3.5V_ST
R4104
47K
Q4101
2SC3052
E
B
C
R4103
47K
47K
C4102
0.1uF
C4100
0.1uF
R4114
100
100
L4100
BLM18PG121SN1D
C4107
100pF
100pF
50V
KEY2
KEY1
R4113
100
100
+3.5V_ST
C4104
1000pF
50V
LED_R
R4145
10K
+5V_ST
IR_OUT_HDMI1
R4146
10K
IR_OUT_CTRL
+5V_ST
R4149
22
R4141
22
R4139
30K
R4143
30K
IR_OUT_RS232C
+5V_ST
R4135
30K
+5V_ST
R4148
10K
R4147
10K
R4137
22
IR_OUT_HDMI2
R4129
22
IR_OUT_HDMI3
R4117
10K
1%
+3.5V_ST
R4118
10K
1%
10K
1%
R4107
47K
OPT
OPT
R4130
10K
R4134
10K
R4138
10K
R4142
10K
Q4102
2SC3052
E
B
C
Q4103
2SC3052
E
B
C
Q4105
2SC3052
E
B
C
Q4107
2SC3052
E
B
C
Q4108
2SC3052
E
B
C
Q4106
2SC3052
E
B
C
Q4104
2SC3052
E
B
C
P4101
12507WR-08L
1
GND
2
KEY1
3
KEY2
4
+3.5V_ST
5
GND
6
LOGO/LED_R
7
IR
8
GND
9
D4100
5.6V
OPT
D4101
5.6V
OPT
R4125
10K LED_R
D4104
5.6V
OPT
Q4100
MMBT3904(NXP)
MMBT3904(NXP)
LOGO_LIGHT
E
B
C
+3.5V_ST
R4136
1K
1K
LOGO_LIGHT
C4120
0.1uF
16V
0.1uF
16V
LOGO_LIGHT
LOGO_LIGHT
R4132
10K
LOGO_LIGHT
R4133
10K
10K
OPT
R4131
22
LOGO_LIGHT
R4100
22
IR & KEY
41
IR / KEY
2012.12.10
xxLP860H-ZA
Place Near MICOM
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