Read LG 32LD660 / 32LD665H (CHASSIS:LA05C) 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.
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.
2SC3052
Q401
E
B
C
120-ohm
L411
INV_CTL_18
PWM_DIM
0
POWER_24_GND
R442
100
POWER_18_INV_CTL
R428
RT1P141C-T112
Q408
Q408
E
B
C
PWM_DIM_22
4.7K
POWER_20_ERROR_OUT
R400
10K
R417
10uF
10V
10V
C480
OPT
ERROR_OUT
PWM_DIM
ERROR_OUT_24
4.7K
POWER_22_A_DIM
R430
120-ohm
L413
10K
R435
ERROR_OUT
0
POWER_24_PWM_DIM
R407
A_DIM
ERROR_OUT_24
FM20020-24
P400
19
12V
14
GND
9
3.5V
4
24V
18
INV ON
13
GND
8
GND
3
24V
17
12V
12
3.5V
7
GND
2
24V
16
GND/V-sync
11
3.5V
6
GND
1
PWR ON
20
A.DIM
15
GND
10
3.5V
5
GND
21
12V
22
P.DIM1
23
GND/P.DIM2
24
Err OUT
25
0
POWER_18_A_DIM
R461
+5V_DEVICE
0
NON_OPC/NON_IOP
R460
0
R421
+5V_DEVICE
0 . 1 u F
50V
50V
C411
OPT
10K
R413
A_DIM
1.2K
R409
A_DIM_20
INV_ON
10K
R436
A_DIM_20
PWM_DIM_22
INV_CTL_18
+3.5V_ST
+3.5V_ST
+12V
0
POWER_20_PWM_DIM
R426
MLB-201209-0120P-N2
L410
A_DIM
4.7K
POWER_24_ERROR_OUT
R418
+24V
0
POWER_22_PWM_DIM
R434
100
POWER_24_INV_CTL
R423
1K
R440
4.7K
POWER_20_A_DIM
R414
+3.5V_ST
4.7K
ERROR_OUT_PULL_UP
R412
+3.5V_ST
22K
R453
MAIN_PWR_ON
5:N18;16:AC22
5:N18;16:AC22
MLB-201209-0120P-N2
L407
22K
R454
0.1uF
C433
OPT
470pF
50V
C436
OPT
27K
1%
R438
+3.3V_VDEC
3.6uH
L404
1K
R408
2.2K
OPT
OPT
R416
0 . 1 u F
16V
C438
OPT
0
R425
0 . 1 u F
16V
C408
OPT
+3.3V_BCM_EN
5:N18;B15
22K
R410
+3.5V_ST
AOZ1073AIL-3
IC400
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
10K
1%
R422
+3.5V_ST
1/10W
4.7K
1%
R439
AO3407A
Q403
G
D
S
BLM18PG121SN1D
L401
10K
R406
+12V
1/10W
11K
5%
R424
VDEC_EN
9 : A J 2 3
47K
R405
2SC3052
Q406
E
B
C
47K
R437
+3.3V
0
OPT
R404
NR8040T3R6N
3.6uH
L418
10K
1%
R459
2700pF
C482
10K
R456
51K
1%
R457
AOZ1073AIL-3
IC406
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
+12V
+3.5V
100pF
50V
OPT
C484
12K
R455
1.5K
1%
R458
22uF
10V
10V
C485
+5V_DEVICE
0 . 1 u F
16V
16V
OPT
C483
1000pF
50V
50V
C432
100uF
6.3V
C420
OPT
10uF
6.3V
C434
10uF
6.3V
C435
10uF
16V
16V
C481
1uF
50V
50V
C407
22uF
OPT
C409
22uF
6.3V
C421
22uF
6.3V
6.3V
C429
22uF
6.3V
6.3V
C437
OPT
22uF
16V
C424
22uF
6.3V
C425
OPT
22uF
16V
16V
C431
47uF
16V
C406
OPT
68uF
C405
OPT
35V
BLM18PG121SN1D
L409
2SC3052
Q400
E
B
C
MLB-201209-0120P-N2
L414
22uH
L416
+3.5V_ST
30K
R446
100pF
50V
C428
47uF
10V
10V
C454
OPT
+5V_ST
0
R443
Si4800BDY
Q409
3
S3
2
S2
4
G
1
S1
5
D5
6
D6
7
D7
8
D8
100K
R445
15K
1%
R447
THERMAL
SC632ULTRT
IC403
3
C1-
2
C1+
4
IN
1
GND
5
EN
6
OUT
7
C2+
8
C2-
9
[EP]GND
2 . 2 u F
10V
10V
C423
+12V_ST
1K
R433
DC_DC_EN
5:N17
2 . 2 u F
10V
C403
47uF
10V
10V
C455
OPT
20K
R444
100pF
50V
50V
C430
SMAB34
40V
D401
47K
R451
1K
R448
0 . 1 u F
C427
10uF
10V
10V
C426
22uF
16V
C448
BD9306AFVM
IC404
3
ENB
2
CT
4
GD
1
RT
5
VCC
6
GND
7
COMP
8
FB
0
32"_OPT
32"_OPT
R469
0
32"_OPT
R474
0
32"_OPT
32"_OPT
R473
22uF
OPT
C488
AO3407A
Q412
3 7 / 4 2 / 4 7 / 5 5 _ O P T
G
D
S
0 . 1 u F
16V
C487
+12V
0
32"_OPT
R471
2.2K
OPT
OPT
R475
10K
R464
0 . 1 u F
16V
16V
C490
0
32"_OPT
R470
2.2K
OPT
OPT
R476
AO3407A
Q413
3 7 / 4 2 / 4 7 / 5 5 _ O P T
G
D
S
PANEL_CTL
9 : A J 2 0
+3.5V_ST
0 . 1 u F
16V
C491
47K
R468
47K
R465
47K
R462
47K
R467
0
32"_OPT
R472
1uF
16V
16V
C486
AO4813
32"_OPT
Q411
3
S1
2
G2
4
G1
1
S2
5
D1_1
6
D1_2
7
D2_1
8
D2_2
+3.3V_BCM_EN
5 : N 1 8 ; J 4
22uF
C489
OPT
2SC3052
Q410
E
B
C
+12V_TCON
+3.5V
+3.5V_ST
33K
R463
2SC3052
Q414
E
B
C
0
R466
4
POWER(12V)
18
32/37/42LD660H
2 0 1 0 . 1 2 . 1 3
* FROM LIPS & POWER B/D -->Apply changed Pin Map
2 2 0 u F = = > 1 0 0 u F * 2 + 2 2 u F f o r D e p t h
* +12V -> +3.3V for HDIM_SW/ EXT_VDEC/ PWM_AMP / Flash / EEPROM / ProidIom
R2
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
R1
3A
* +12V to +5V USB
Placed on SMD-TOP
* S T _ 5 V ( 2 0 0 m A ) / S T _ 1 2 V ( 1 . 5 A )
R450
Value
R429
0 ohm
AO4813
R432
0 ohm
R449
* + 5 V / + 1 2 V
3 2 I n c h O p t i o n
R452
0 ohm
Q404
0 ohm
R441
Location
0 ohm
0 ohm
0 ohm
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