Read LG 42LG61YD (CHASSIS:LB81C) 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.
TUNER
TU_TS_SYNC
TU_TS_VAL
TU_TS_DATA[0]
TU_TS_CLK
C416
0.1uF
50V
+3.3V_TU
R415
33
C408
47pF
50V
C404
47pF
50V
SDA_D_TU
003:M14;001:H25;001:AB6;001:AM6
SCL_D_TU
003:M14;001:H25;001:AB5;001:AM5
+3.3V_TU
L401
LEMC3225T-6R8M
C421
100uF
16V
C420
100uF
16V
C417
0.1uF
50V
C414
0.1uF
50V
C405
0.1uF
50V
+5V_TU
BOOSTER
+5V_TU
R450
2.2K
R455
10K
C427
100uF
16V
C426
0.01uF
50V
R444
OPT
L402
LEMC3225T-6R8M
Q405
2SA1530A-T112-1R
E
B
C
R402
0
OPT
C423
47pF
50V
OPT
R401
0
AUS_ONLY
R451
OPT
Q404
2SA1530A-T112-1R
E
B
C
C429
0.01uF
50V
R454
220
Q406
2SA1530A-T112-1R
E
B
C
R468
0
TV_CVBS+
+5V_TU
C403
100pF
50V
AUS_ONLY
R443
4.7K
Q403
2SA1530A-T112-1R
E
B
C
R446 470
R449
82
SIF+
+5V_TU
C413
47pF
50V
AUS_ONLY
C412
47pF
50V
AUS_ONLY
R420
47
AUS_ONLY
R419
47
AUS_ONLY
+3.3V_TU
R422 4.7K
OPT
R424 4.7K
OPT
+5V_TU
C402 0.1uF
50V
C401
0.1uF
50V
+1.8V_TU
C419
100uF
16V
C410
0.1uF
50V
C415
0.1uF
50V
C409
0.1uF
50V
C418
100uF
16V
R441
0
R442
0
R440
0
R439
0
GND_1
R435
0
R437
0
R438
0
GND_2
R436
0
R430
0
R432
0
R433
0
GND_3
R431
0
R425
0
R427
0
R428
0
GND_4
R426
0
SCL_A_TU
004:L4;004:R8;001:H26
GND
GND
GND
GND
R452
10K
OPT
+5V_TU
R403
0
AUS_ONLY
C425
4700pF
50V
R445 1K
R448
1K
C428
4700pF
50V
TU_RESET_N
R429
100
+3.3V_TU
R418 4.7K
C411
1000pF
50V
C406
1000pF
50V
C407
1000pF
50V
R434 4.7K
R457
0
C422
0.1uF
50V
OPT
R465
330
R447
0
R461
100
R466
330
Q402
2SC3052
E
B
C
Q407
2SC3052
E
B
C
C424
0.1uF
50V
OPT
LD400
TU401
TDFV-G135D1
AUS_Tuner
EBL42367001
1
ANT[5V]
2
BB[CTR]
3
GND_1
4
+B[5V]
5
NC_1
6
RF_AGC
7
TP[VT]
8
NC_2
9
GND_2
10
SDA_T
11
SCL_T
12
AIF_1
13
AIF_2
14
NC_3
15
VIDEO
16
AUDIO
17
SIF
18
SDA
19
SCL
20
RST
21
3.3V
22
1.8V
23
ERR
24
MCL
25
D7
26
D6
27
D5
28
D4
29
D3
30
D2
31
D1
35
SHIELD
32
D0
33
VAL
34
SYNC
R416
33
R417
33
R421
1.2K
R423
1.2K
R462
0
TAIWAN
R463
0
TAIWAN
R467
0
TAIWAN
R469
0
OPT
C432 27pF
TAIWAN
+5V_TU
R458 4.7K
OPT
C431 27pF
TAIWAN
R456 4.7K
OPT
SDA_A_TU
004:K16;004:L3;001:H26
SCL_A_TU
004:K15;004:L4;001:H26
TU_TS_DATA[0]
TU_TS_VAL
TU_TS_SYNC
TU_TS_CLK
R472
4.7K
OPT
SCL_A_TU
Q408
2N7002(F)
G
D
S
Q409
2N7002(F)
G
D
S
+3.3V_TU
R471
0
SCL_A_TU_5V
SDA_A_TU
+5V_TU
SDA_A_TU_5V
R474
2K
R475
2K
R477
5.6K
R470
0
R476
5.6K
R473
4.7K
OPT
R481
0
AUS_ONLY
R480
0
OPT
SCL_A_TU_5V
SDA_A_TU_5V
R479
0
AUS_ONLY
R478
0
OPT
SDA_A_TU
004:L3;004:R8;001:H26
R483
0
TAIWAN
SCL_A_TU_5V
R484
0
OPT
R485
0
TAIWAN
R482
0
OPT
SDA_A_TU_5V
C433
0.1uF
16V
R464
100pF
TAIWAN
50V
R459
100
TAIWAN
R460
100
TAIWAN
TU402
TAFT-H005F
TAIWAN
EBL35311216
14
AFT
13
V-OUT
5
RF_AGC
12
NC_4
11
AS
AS
2
GND_1
19
NC_7
18
NC_6
10
CLOCK
4
NC_2
1
NC_1
17
NC_5
9
DATA
8
GND_2
3
+B[5V]
16
SIF-OUT
7
NC_3
6
TP[33V_OPTION]
15
A-OUT
21
SHIELD
20
NC_8
TP465
TP466
TP470
R412
100
R413
100
R414
100
R404
100
TU401-*1
TDFV-D135F
TAIWAN_TUNER
1
ANT[5V]
2
BB[CTR]
3
GND_1
4
+B[5V]
5
NC_1
6
RF_AGC
7
TP[VT]
8
NC_2
9
GND_2
10
SDA_T
11
SCL_T
12
AIF_1
13
AIF_2
14
NC_3
15
NC_4
16
NC_5
17
NC_6
18
SDA
19
SCL
20
RST
21
3.3V
22
1.8V
23
ERR
24
MCL
25
D7
26
D6
27
D5
28
D4
29
D3
30
D2
31
D1
35
SHIELD
32
D0
33
VAL
34
SYNC
C434
0.1uF
C435
0.1uF
OPT
R453-*1
220
TAIWAN
R453
270
AUS
C430
680pF
50V
OPT
AM_AUDIO
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