Read LG 42LV555H (CHASSIS:LA05E) 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.
120-ohm
L413
INV_CTL_18
4.7K
POWER_20_ERROR_OUT
R400
100pF
50V
OPT
C484
+3.5V_ST
10K
R435
0
POWER_18_A_DIM
R461
PWM_DIM
+3.5V_ST
MAIN_PWR_ON
5:O18;16:AC22
5:O18;16:AC22
0
POWER_22_PWM_DIM
R434
0 . 1 u F
16V
16V
OPT
C483
51K
1%
R457
PWM_DIM
0
R421
ERROR_OUT_24
1.2K
R409
22K
R453
+3.5V_ST
4.7K
POWER_20_A_DIM
R414
1.5K
1%
R458
10K
R417
ERROR_OUT
22uF
10V
10V
C485
10K
1%
R459
A_DIM
12K
R455
120-ohm
L411
MLB-201209-0120P-N2
L407
0 . 1 u F
50V
50V
C411
OPT
4.7K
POWER_24_ERROR_OUT
R418
INV_CTL_18
ERROR_OUT_24
MLB-201209-0120P-N2
L410
10K
R436
+24V
100
POWER_24_INV_CTL
R423
+5V_DEVICE
2SC3052
Q401
E
B
C
RT1P141C-T112
Q408
Q408
E
B
C
10K
R413
0
POWER_20_PWM_DIM
R426
A_DIM
+3.5V
2700pF
C482
A_DIM_20
10K
R456
0
POWER_24_PWM_DIM
R407
4.7K
ERROR_OUT_PULL_UP
R412
A_DIM
PWM_DIM_22
+3.5V_ST
ERROR_OUT
0
NON_OPC/NON_IOP
R460
+12V
A_DIM_20
INV_ON
1K
R440
0
POWER_24_GND
R442
PWM_DIM_22
100
POWER_18_INV_CTL
R428
4.7K
POWER_22_A_DIM
R430
NR8040T3R6N
3.6uH
L418
10uF
10V
10V
C480
OPT
AOZ1073AIL-3
IC406
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
+5V_DEVICE
+5V_DEVICE
SMAW200-H24S2
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
68uF
C405
OPT
35V
47uF
16V
C406
OPT
1uF
50V
50V
C407
100uF
6.3V
C420
OPT
22uF
6.3V
C421
22uF
16V
C424
22uF
6.3V
C425
OPT
10uF
16V
16V
C481
2SC3052
Q400
E
B
C
10uF
6.3V
C435
1/10W
11K
5%
R424
AOZ1073AIL-3
IC400
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
0 . 1 u F
16V
C408
OPT
+3.3V_BCM_EN
5:N18;B15
+3.3V
1/10W
4.7K
1%
R439
0 . 1 u F
16V
C438
OPT
+3.5V_ST
10uF
6.3V
C434
22uF
6.3V
6.3V
C429
+12V
2SC3052
Q406
E
B
C
22uF
OPT
C409
1000pF
50V
50V
C432
BLM18PG121SN1D
L401
10K
1%
R422
22K
R454
AO3407A
Q403
G
D
S
+3.3V_VDEC
+3.5V_ST
10K
R406
1K
R408
0
R425
22uF
6.3V
6.3V
C437
OPT
47K
R405
3.6uH
L404
2.2K
OPT
OPT
R416
0
OPT
R404
VDEC_EN
9 : A J 2 3
22uF
16V
16V
C431
BLM18PG121SN1D
L409
470pF
50V
C436
OPT
27K
1%
R438
0.1uF
C433
OPT
22K
R410
47K
R437
+12V
MLB-201209-0120P-N2
L414
330
R433
R433
AP1117EG-13
IC401
ADJ/GND
OUT
IN
110
R443
1
5%
R441
+5V_ST
0 . 1 u F
50V
50V
C470
10uF
10V
10V
C443
0 . 1 u F
16V
16V
C442
+12V_ST
18K
1%
R446
1uF
10V
10V
C426
0 . 1 u F
16V
16V
C403
OPT
100pF
50V
50V
C423
OPT
+3.5V_ST
22uF
16V
16V
C418
+12V_ST
SMAB34
40V
D401
100K
1%
R445
75K
R429
3.6uH
L416
10uF
10V
10V
C410
1uF
16V
16V
C412
OPT
1200pF
50V
50V
C422
+3.5V_ST
0 . 1 u F
16V
16V
C417
56K
1%
R432
THERMAL
TPS61087DRC
IC403
3
EN
2
FB
4
AGND
1
COMP
5
PGND
6
SW_1
7
SW_2
8
IN
9
FREQ
10
SS
11
[EP]AGND
22uF
OPT
C488
0 . 1 u F
16V
C491
+12V
+3.5V_ST
47K
R467
2SC3052
Q409
E
B
C
+3.5V_ST
PANEL_CTL
9 : A J 2 0
1uF
16V
16V
C486
2.2K
OPT
OPT
R476
AO3407A
Q413
3 7 / 4 2 / 4 7 / 5 5 _ O P T
G
D
S
47K
R462
AO4813
32"_OPT
Q411
3
S1
2
G2
4
G1
1
S2
5
D1_1
6
D1_2
7
D2_1
8
D2_2
+12V_TCON
47K
R468
AO3407A
Q412
3 7 / 4 2 / 4 7 / 5 5 _ O P T
G
D
S
22uF
C489
OPT
0 . 1 u F
16V
16V
C490
47K
R465
0
32"_OPT
R472
+3.3V_BCM_EN
5 : N 1 8 ; J 4
0 . 1 u F
16V
C487
0
32"_OPT
R474
+3.5V
10K
R464
2.2K
OPT
OPT
R475
0
32"_OPT
R470
2SC3052
Q410
E
B
C
0
32"_OPT
R471
33K
R463
0
32"_OPT
32"_OPT
R469
0
32"_OPT
32"_OPT
R473
0
R466
4
POWER(12V)
18
LV555H-UA
2 0 1 0 . 1 2 . 1 0
R2
3A
Placed on SMD-TOP
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
R1
* +12V to +5V USB
2 2 0 u F = = > 1 0 0 u F * 2 + 2 2 u F f o r D e p t h
* FROM LIPS & POWER B/D -->Apply changed Pin Map
* +12V -> +3.3V for HDIM_SW/ EXT_VDEC/ PWM_AMP / Flash / EEPROM / ProidIom
* + 5 V / + 1 2 V
* S T _ 5 V ( 2 0 0 m A ) / S T _ 1 2 V ( 1 . 5 A )
C l o s e t o I C 4 0 3
C470 Close to LDO
R1
R2
0 ohm
R450
0 ohm
R449
Q404
0 ohm
AO4813
R452
Value
R441
R429
3 2 I n c h O p t i o n
0 ohm
0 ohm
0 ohm
R432
Location
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