Read LG 42LG80FD (CHASSIS:LJ82C) Service Manual 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.
R437
470
INV_BUFFER
GND
R461
470
INV_BUFFER
D3.3V
C429
0.1uF
C417
0.1uF
C425
0.1uF
X400
24MHz
SDA3_3.3V
1:I4
GND
KEY2
C3
GND
SYS_RESET
10:AC4
R4
74
3.
3K
3.3VST_MICOM
C428
0.1uF
GND
R435
22
AC_DET
8:D6
DDC_SDA
7:J2
UCOM_RX
A4;D6
+3.3V
R487
1K
READY
R444
1K
R441
OPT
MICOM 3P LOW
RL_ON
8:A6;8:D7
R448
47K
3.3VST_MICOM
R446
22
R498
1K
RXD
D6
C408
0.1uF
GND
C436
0.1uF
R4
5
7
22
SDA2_3.3V
1:B2;1:I4;5:A5;12:M12
R471
6.8K
READY
D3.3V
D3.3V
R452
10K
R478
6.8K
3.3VST_MICOM
GND
GND
ST_5V
KEY1
C3
R460
4.7K
INV_BUFFER
LED_G
C2
R4
7
0
22
5V_MNT
8:A6
R447
1K
R458
4.7K
JTAG_RESETb
2:E1
R431
680
R449
220
R453
4.7K
GND
C405
10uF
D3.3V
IC405
KIA7029AF
2
G
3
O
1
I
IC400
KIA7029AF
2
G
3
O
1
I
R400
1K
IC406
AT24C16AN-10SI-2.7
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
C402
0.1uF
R419
100
READY
C437
0.1uF
TXD
D6
INV_ON/OFF_3.3
I3
R4
5
5
22
R464
1K
GND
MUTE2
6:AO23
R436
22
ST_5V
IC404
AZ1117H-3.3
2
OUTPUT
3
INPUT
1
ADJ/GND
GND
INV_ON/OFF
8:D6
D3.3V
R440
1K
MICOM 3P HIGH
R443
4.7K
D3.3V
R418
1K
READY
SW400
SKHMPWE010
PV
1
2
4
3
5
UCOM_RX
D6;D3
SCL3_3.3V
1:I4
R4
6
9
2
2
LED_R
C2
GND
C410
220pF
GND
GND
GND
C433
22pF
POWER_CTL_2.6V_1.2V
8:D1
POWER_CTL_3.3V
8:F6
R488
100
C409
220pF
C424
10uF
READY
SYS_RESETb
1:E2;2:B3;8:A3;11:O11
R4
75
1K
3.3VST_MICOM
C432
0.1uF
GND
MUTE1
5:A4;12:M11
HDMI_CEC
6:M14;7:H7
GND
ST_5V
R428
1K
READY
R4
9
9
33K
GND
INV_ON/OFF_3.3
H7
C401
10uF
IC407
MTV416GMF
1
HSYNC/P1.5
2
VSYNC/P1.6
3
P1.7/SOGI
4
RST
5
HSCL1/P3.0/RXD
6
P4.3/AD3
7
HSDA1/P3.1/TXD
8
P3.2/INT0
9
P3.3/INT1
10
ISDA/P3.4/T0
11
ISCL/P7.5
12
HSDA2/P7.4
13
HSCL2/P7.3
14
X2
15
X1
16
VSS
17
P4.0/AD0
18
P6.0/CLKO1
19
P6.1
20
P6.2
21
P6.3
22
P6.4
23
P6.5
24
P6.6
25
P6.7
26
P7.2/HCLAMP
27
P7.1/VBLANK
28
P4.1/AD1
29
P7.0/HBLANK
30
P5.7/CLKO2
31
P5.6
32
P5.5
33
P5.4
34
P5.3
35
P5.2
36
P5.1
37
P5.0
38
VDD
39
P4.2/AD2
40
P1.0/ET2
41
P1.1/DA0
42
P1.2/DA1
43
P1.3/DA2
44
P1.4/DA3
R445
22
3.3VST_MICOM
GND
D402
SDC15
A1
C
A2
3.3VST_MICOM
D401
SDC15
A1
C
A2
R434
100K
INV_BUFFER
3.3VST_MICOM
DDC_SCL
7:J2
GND
GND
ST_5V
SCL2_3.3V
1:B2;1:I4;5:A5;12:M12
/W_PROTECT
6:B26;6:B23;7:D7;7:J3
R467
0
NONE_INV_BUFFER
R463 15K
IR
C2
C426
0.1uF
R430
330
MICOM_RESET
5:A6;5:C3;12:J19
C435
0.1uF
R496
1K
LVDS_PANEL_CTRL
9:A4
R492
68K
GND
C434
22pF
R459
0
READY
R489
4.7K
R491
4.7K
3.3VST_MICOM
C407
0.1uF
C404
0.1uF
C403
0.1uF
C420
0.1uF
PWM_LED
C2
R473
100
R403
100
R401
100
R402
100
READY
EYE_Q_RESET
R404
220
UCOM_TX
E5
SDA1_5V
EYEQ_SCL
R406
22
SCL1_5V
R405
22
EYEQ_SDA
C421
5pF
READY
R412
0
GND
C412
0.1uF
16V
C411
0.1uF
16V
C415
0.1uF
C413
0.1uF
16V
R413
0
LED_R
G5
R407
0
C416
0.1uF
16V
R409
0
GND
R415
0
LG50
EYEQ_SDA
C4
ST_5V
C414
0.1uF
16V
EYEQ_SCL
C4
C400
0.1uF
16V
IR
D3
PWM_LED
G5
EYE_Q_RESET
I4
R408
0
+3.3V
C419
5pF
READY
C418
0.1uF
16V
R414
0
LG50
LED_G
G5
KEY2
I2
KEY1
I2
TP405
TP407
R427
2.7K
R424
0
RXD
TP406
TP408
+3.3V
UCOM_RX
A4;D3
ST_5V
BCM_TX
1:H5
BCM_RX
1:H5
C427
0.1uF
16V
R426
100K
TP404
UCOM_TX
D3
R425
0
IC408
MC14053BDR2G
0ISTL00024A
3
Z1
2
Y0
4
Z
1
Y1
6
INH
5
Z0
7
VEE
8
VSS
9
C
10
B
11
A
12
X0
13
X1
14
X
15
Y
16
VDD
C430
47uF
16V
TP409
TXD
A5
R420
1K
READY
C406
22uF
IC401
MC74LCX14DT
3
A2
2
Y1
4
Y2
1
A1
6
Y3
5
A3
7
GND
8
Y4
9
A4
10
Y5
11
A5
12
Y6
13
A6
14
VCC
Q400
2SC3052
E
B
C
Q401
2SC3052
INV_BUFFER
E
B
C
Q404
2SC3052
INV_BUFFER
E
B
C
3.3VST_MICOM
R422
4.7K
R423
4.7K
R466
33K
R416
750
R417
750
R4
33
10
K
R411
0
R410
0
JP413
JP414
JP407
JP408
JP409
JP410
JP411
JP412
JP405
JP403
JP406
JP404
JP401
JP402
TP401
TP402
TP403
TP410
TP411
TP412
TP413
TP414
TP415
TP416
TP417
TP419
TP418
TP421
TP420
TP424
TP425
TP426
R485
4.7K
R481
4.7K
R483
4.7K
R484
4.7K
R451
4.7K
R450
4.7K
C422
0.1uF
C423
0.1uF
TP427
TP428
TP429
TP433
TP432
TP434
TP435
TP436
TP437
TP438
TP439
TP440
TP441
TP442
TP443
TP444
TP445
TP446
TP447
TP448
TP452
TP453
TP454
TP455
TP456
TP457
TP458
TP461
TP463
TP464
TP465
TP466
TP467
TP468
TP469
TP470
TP473
TP474
TP475
TP476
TP477
TP478
TP479
TP480
TP481
TP482
TP483
TP484 TP485
TP486
TP487
TP488
TP489
TP490
TP491
TP492
TP493
TP494
TP495
TP496
TP497
JK400
KCN-DS-1-0088
1
2
3
4
5
6
7
8
9
10
R477
0
READY
L409
BG2012B800
POWER_CTL_1.2V_ONLY
L400
L402
L403
L401
L404
L405
L408
IC402
ST3232CDR
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
T2OUT
8
R2IN
9
R2OUT
10
T2IN
11
T1IN
12
R1OUT
13
R1IN
14
T1OUT
15
GND
16
VCC
R479
4.7K
ZD400 5.1V
ZD401 5.1V
IC403
AT24C512BW-SH-T
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
P402
12505WS-15A00
1
SCL_EYEQ
2
SDA_EYEQ
3
GND
4
GND
5
KEY_1
6
KEY_2
7
3.3V
8
5V_ST
9
PWM_LED
10
IR
11
EYEQ_RESET
12
GND
13
LED_G
14
LED_R
16
GND
15
GND
TP498
TP499
TP4000
TP4001
TP4002
TP4003
TP4004
TP4005
TP4006
TP4007
TP4008
TP4009
TP4010
TP4011
TP4012
TP4014
TP4015
TP4017
TP4018
TP4019
TP4020
TP4021
TP4022
TP4023
TP4024
TP4025
TP4026
TP4027
TP4028
TP4029
TP4030
TP4031
TP4032
TP4033
TP4034
TP4035
TP4036
LCD Module Only
NVRAM
RESET
Serial Port
RxD
TxD
MICOM, TTL
4
Detect +3.3V for Power Sequence(BCM 1.2V, 2.6V, 3.3V)
LJ82C
12
BREATHING LED
2008.04.04.
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