LG 70LA8600-SA (CHASSIS:LJ34D) Service Manual ▷ View online
H13
IC100
1 [P60/SCLA0]
2 [P61/SDAA0]
2 [P61/SDAA0]
I2C_SCL/SDA2
UART 4P
P3800
12507WS-04L
13. GPIO(MICOM-RENESAS)
SOC RESET
IC100
LG1154
H13
IC100
LG1154
[P12/SO00/TxD0/TOOLTxD] 20
[P11/SI00/RxD0/TOOLrxD/SDA00] 21
SOC_RX/TX
AMP MAIN
IC5400
TAS5733
[P10/SCK00/SCL00] 22
AMP_MUTE
4 [P63]
GND
+12V TO PANEL_VCC
PANEL_CTL
16 [P16/TI01/TO01/INTP5]
LED_R
6 [P75/KR5/INTP9/SCK01/SCL01]
IR
EEPROM SDA
18 [P14/RxD2/SI20/SDA20]
SOC_RESET
IR 10P
[P24/ANI4] 28
[P22/ANI2] 30
[P27/ANI7] 25
[P26/ANI6] 26
[P23/ANI3] 29
[P22/ANI2] 30
[P27/ANI7] 25
[P26/ANI6] 26
[P23/ANI3] 29
[P146] 23
MODEL1_OPT_0~6
10 [P71/KR1/SI21/SDA21]
11 [P70/KR0/SCK21/SCL21]
EEPROM_SCL
EEPROM_SDA
3.3V-2.5V LDO
IC2302
AP7173-SPG-13 HF(DIODES)
33 [P130]
POWER_ON/OFF2_1
HP AMP
IC6100
TPA6138A2PWR
[P25/ANI5] 27
SIDE_HP_MUTE
OPT0 LOGO_LIGHT / NON_LOGO_LIGHT
OPT1 TOUCH_KEY / TACT_KEY
OPT2 PDP / LCD/OLED
OPT3 GP4_10PIN / GP3_12, 15PIN
OPT4 MHL / NON_MHL
OPT5 GED / NON GED
OPT1 TOUCH_KEY / TACT_KEY
OPT2 PDP / LCD/OLED
OPT3 GP4_10PIN / GP3_12, 15PIN
OPT4 MHL / NON_MHL
OPT5 GED / NON GED
31 [P21/ANI1/AVREFM]
32 [P20/ANI0/AVREFP]
32 [P20/ANI0/AVREFP]
KEY1/KEY2
IR_10P
P4102
12507WR-10L
MICOM
IC3000
[P62] 3
12P MICOM DEBUG
P3000
12505WS-12L
[P40/TOOL0] 39
MICOM_DEBUG
3.5V-1.5V DCDC
IC2305
TPS54319TRE
8 [P73/KR3/SO01]
POWER_ON/OFF2_2
12V-1.0V DCDC
IC2300
9 [P72/KR2/SO21]
POWER_ON/OFF2_3
OPT5 GED / NON_GED
OPT6 OPT / OPT
OPT6 OPT / OPT
[/RESET] 40
MICOM_RESET
MICOM X-TAL
X3000
32.768KHz
[P124/XT2/EXCLKS] 41
[P123/XT1] 42
12V-1.1V DCDC
IC2303
TPS54821RHL
T-R5F100GDAFB
RENESAS
15 [P17/TI02/TO02]
POWER_ON/OFF1
HDMI 1 / 2 / 3 /4
JK3202, JK3200, JK3201, JK3203
51U019S-312HFN-E-R-B-LG
HDMI_CEC
[P74/KR4/INTP8/SI01/SDA01] 7
IC2300
TPS54327DDAR
9 [P72/KR2/SO21]
[P137/INTP0] 43
MHL_DET
HDMI SW
IC3201
SIL9587CNUC
24V-5V DCDC
IC4300
RT8289GSP
34 [P01/TO00/RXD1]
12V-5V DCDC
IC2306
TPS54327DDAR
POWER_ON/OFF2_4
SCART_MUTE
[P00/TI00/TXD1] 35
Full SCART
JK4600
RESET IC
IC2307
NCP803SN293
14 [P51/INTP2/SO11]
POWER_DET
5 [P31/TI03/TO03/INTP4]
EDID_WP
12V-3.3V DCDC
IC2301
AOZ1038PI
[P00/TI00/TXD1] 35
JK4600
DA1R018H91E
NFC_BUSY
[P120/ANI19] 37
LOGO_LIGHT
[P41/TI07/TO07] 38
LOGO LIGHT
P8900
12507WR-03L
MHL DET
[P137/INTP0] 43
HDMI4
JK3203
[P13/T D2/SO20] 19
INV CTL
17 [P15/PCLBUZ1/SCK20/SCL20]
+3.5V_ST TO +3.5V_WOL
WOL_CTL
12 [P30/INTP3/RTC1HZ/SCK11/SCL11]
CAM_DET
USB CAMERA
P4200
24 [P147/ANI18]
+3.5V_ST TO +3.5V_CAM
CAM_CTL
_
[P137/INTP0] 43
POWER S/W
IC3202
TPS2554
HDMI SW
IC3201
SIL9587CNUC
JK3203
51U019S-312HFN-E-R-B-LG
24P POWER
P2301
FW20020-24S
[P13/TxD2/SO20] 19
INV_CTL
[P140/PCLBUZ0/INTP6] 36
RL_ON
USB Wi-FI
P4301
13 [P50/INTP1/SI11/SDA11]
WOL/WOW_POWER_ON
Repair guide
1 / 97
Contents of LCD TV Standard Repair Process
i h
id
k
No.
Error symptom (High category)
Error symptom (Mid category)
Page
Remarks
1
No video/Normal audio
1
2
No video/No audio
2
A. Video error
3
Tuning fail, Picture broken/ Freezing
3, 4
4
Color error
5
Vertical/Horizontal bar residual image light
5
Vertical/Horizontal bar, residual image, light
spot, external device color error
6
6
B. Power error
No power
7
7
Off when on, off while viewing, power auto
8
7
g p
on/off
8
8
C. Audio error
No audio/Normal video
9
9
Wrecked audio/discontinuation/noise
10
10
D. Function error
Remote control & Local switch checking
11
11
External device recognition error
12
12
E Noise
Circuit noise mechanical noise
13
12
E. Noise
Circuit noise, mechanical noise
13
13
F. Exterior error
Exterior defect
14
Fi t f ll Ch k h th th
i SVC B ll ti i GCSC S t
f
th
d l
2 / 97
First of all, Check whether there is SVC Bulletin in GCSC System for these model.
Contents of LCD TV Standard Repair Process Detail Technical Manual
No.
Error symptom
Content
Page
Remarks
1
A. Video error_ No video/Normal audio
Check LCD back light with naked eye
A1
2
LED driver B+ 24V measuring method
A2
3
Check White Balance value
A3
4
Power Board voltage measuring method
A4
6
A. Video error_ No video/Video lag/stop
TUNER input signal strength checking method
A5
7
LCD-TV Version checking method
A6
99
A. Video error_Color error
LCD TV connection diagram
A7
10
11
Check Link Cable (LVDS) reconnection condition
A8
A9
A9
12
Adjustment Test pattern - ADJ Key
A10
13
A. Video error_Vertical/Horizontal bar,
residual image light spot
LCD TV connection diagram
A8
14
Check Link Cable (LVDS) reconnection condition
A8
A9
A9
residual image, light spot
(
)
A9
15
Adjustment Test pattern - ADJ Key
A10
16
Exchange T-Con Board (1)
A-1/5
17
Exchange T Con Board (2)
A 2/5
<Appendix>
Defected Type caused by T-Con/ Inverter/
Defected Type caused by T-Con/ Inverter/
Module
17
Exchange T-Con Board (2)
A-2/5
18
Exchange LED driver Board (PSU)
A-3/5
55” : driver board
Other : PSU
19
Exchange Module itself (1)
A-4/5
3 / 97
g
( )
/
20
Exchange Module itself (2)
A-5/5
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