Read LG 42LV375H-ZA (CHASSIS:LD03X) 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.
10uF
25V
25V
C1502
+3.5V_ST
100
CMO
R1515
NR8040T3R6N
3.6uH
L1504
+3.5V_ST
2SC3052
Q1501
E
B
C
+12V
0 . 1 u F
16V
16V
C1547
0 32_AUO
R1526
PANEL_CTL
0 . 1 u F
OPT
OPT
C1517
+5V_USB
+3.3V_NORMAL
A2.5V
POWER_ON/OFF2_2
NR8040T3R6N
3.6uH
L1511
0 OPT
R1524
0 LGD_V4/37_AUO
R1527
POWER_ON/OFF1
4.7K
R1533
2SC3052
Q1503
E
B
C
100pF
50V
OPT
C1539
+12V
FW20020-24S
WAFER-STRAIGHT
P1501
NORMAL_26~52
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
22K
R1503
100
NON_CMO
R1516
0 . 1 u F
16V
16V
C1504
1uF
25V
25V
C1515
OPT
2SC3052
Q1500
E
B
C
INV_CTL
+3.5V_ST
0 . 1 u F
50V
C1518
10K
1%
1%
R1550
D1.8V
2200pF
C1535
PWM_DIM
4.7K
R1504
10K
R1500
0
LGD/37_AUO
R1517
22K
R1506
+3.3V_NORMAL
RT1P141C-T112
Q1502
1
2
3
100
R1566
0
32_AUO
R1518
+5V_NORMAL
1uF
25V
25V
OPT
C1521
10K
R1544
AOZ1072AI
IC1502
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
100K
R1564
0 . 1 u F
16V
C1553
6.8K
OPT
OPT
R1520
0 . 1 u F
16V
16V
C1525
14K
1%
1%
PD_+3.5V
R1559
0 . 1 u F
50V
50V
C1534
SCAN_BLK1/OPC_OUT
L1501
0
NON_OPC
R1529
0 CMO
R1525
MLB-201209-0120P-N2
L1503
12K
R1543
10K
OPT
OPT
R1535
+12V
0 . 1 u F
C1542
10K
OPT
R1567
68uF
35V
C1524
+3.5V_ST
0
OPT
R1530
A_DIM
10K
OPT
R1534
47K
R1501
NR8040T3R6N
3.6uH
L1510
RL_ON
ERROR_OUT
MLB-201209-0120P-N2
L1505
47K
1%
1%
R1548
10K
R1511
POWER_DET
100pF
50V
50V
OPT
C1519
PANEL_VCC
+3.5V_ST
+12V
AO3407A
Q1504
G
D
S
+24V
0
R1512
CIC21J501NE
L1508
100pF
C1532
OPT
+24V
10K
OPT
R1502
R1502
0 . 1 u F
16V
16V
C1551
ESD
10uF
25V
25V
C1528
MLB-201209-0120P-N2
L1502
12K
1%
1%
PD_+12V
R1555
POWER_ON/OFF2_1
10K
R1547
0 . 1 u F
16V
16V
C1523
10K
R1528
10uF
25V
25V
C1530
+3.3V_NORMAL
0
R1519
0 . 1 u F
16V
16V
C1544
+3.5V_ST
0 . 1 u F
16V
16V
C1506
+12V
5.1K
5%
5%
NON_PD_+3.5V
R1552
2SC3052
Q1505
E
B
C
0 . 0 1 u F
25V
C1508
2uH
L1509
22uF
16V
C1527
0 . 1 u F
16V
16V
C1558
100K
R1538
A1.2V
+3.5V_ST
1uF
10V
10V
C1526
POWER_ON/OFF2_1
D1.2V
22uF
16V
16V
C1543
22uF
16V
16V
C1557
22uF
16V
16V
C1541
0 . 1 u F
16V
C1536
3.9K
R1561
OPT
3.6uH
L1514
AOZ1024DI
IC1504
1
PGND
2
VIN
3
AGND
4
FB
5
COMP
6
EN
7
LX
+12V
D3.3V
A3.3V
0 . 1 u F
16V
16V
C1556
0 . 1 u F
16V
16V
C1552
CIC21J501NE
L1516
0 . 1 u F
16V
16V
C1555
+3.3V_NORMAL
27K
1%
R1562
4.7K
1%
R1563
10K
1%
1%
R1571
POWER_ON/OFF2_2
CIC21J501NE
L1500
CIC21J501NE
L1507
CIC21J501NE
L1513
0
R1575
20K
R1557
3300pF
50V
C1548
0 . 1 u F
50V
50V
C1562
1K
R1584
CB3216PA501E
L1519
22UH
L1518
CB3216PA501E
L1520
D1500
A1
C
A2
EXT5V_CTRL
MP2305DS
IC1508
3
SW
2
IN
4
GND
1
BS
5
FB
6
COMP
7
EN
8
SS
EXT_12V
0 . 1 u F
50V
50V
C1511
100K
OPT
R1532
MP5000DQ
IC1509
3
ENABLE/FAULT
2
DV/DT
4
I-LIMIT
1
GND
5
NC
6
SOURCE_1
7
SOURCE_2
8
SOURCE_3
9
SOURCE_4
10
SOURCE_5
11
VCC
4.7K
R1582
1K
R1581
2700pF
50V
C1561
EXT12V_CTRL
EXT_5V
1K
R1580
2SC3875S(ALY)
Q1507
E
B
C
12.4K
R1577
10K
R1579
EXT_PWR_DET
470pF
50V
50V
C1564
0 . 0 1 u F
50V
50V
C1560
2SC3875S(ALY)
Q1506
E
B
C
56K
R1578
100
R1583
0 . 4 7 u F
25V
C1559
4.7K
R1585
10K
R1586
+12V
+12V
+3.5V_ST
+3.5V_ST
SMAW200-H24S2
WAFER-ANGLE
SLIM_32~52
P1500
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
1K
R1523
THERMAL
MP2208DL-LF-Z
IC1503
3
PGND_1
2
SS
4
SW_1
1
AGND
6
NC
5
IN_1
7
BS
8
VCC
9
POK
10
IN_2
11
SW_2
12
PGND_2
13
EN/SYNC
14
FB
15
EP
10
R1572
0 . 1 u F
16V
C1537
0 . 1 u F
16V
C1570
0 . 1 u F
16V
C1571
22uF
16V
C1572
470K
1%
R1569
910K
1%
R1576
0
R1536
0 OHM
5.6V
ESD
D1501
100K
R1536-*1
ESD
10K
R1545
3.9K
R1546
OPT
MP2108DQ
IC1501
3
LX
2
VIN
4
PGND
1
BST
5
SGND
6
SS
7
FB
8
COMP
9
VREF
10
RUN
0.01uF
25V
C1554
10K
1%
R1542
1/10W
10K
1%
R1537
6.8K
R1540
3300pF
50V
C1533
0 . 0 1 u F
25V
C1577
NCP803SN293
IC1507
1
GND
3
VCC
2
RESET
NCP803SN293
IC1506
1
GND
3
VCC
2
RESET
100K
R1556
24K
1%
1%
R1553
POWER 20V
5.1K
5%
5%
R1554
POWER 20V
+3.5V_ST
24K
1%
1%
POWER 24V
R1553-*1
4.3K
1%
1%
POWER 24V
R1554-*1
10K
R1558
10uF
10V
10V
C1573
10uF
16V
16V
C1574
CB3216PA501E
L1521
10K
R1587
SEMTEK
0 . 1 u F
16V
16V
C1575
OPT
10uF
16V
C1576
10uF
16V
16V
C9220
39K
1%
1%
R1565
SEMTEK
18K
1%
R1560
SEMTEK
0 . 1 u F
50V
50V
C1509
10uF
25V
25V
OPT
C1510
4 . 7 u F
50V
C1513
0 . 1 u F
50V
50V
C1522
0 . 1 u F
50V
50V
C1568
22uF
25V
25V
C1546
22uF
25V
25V
C1563
22uF
25V
25V
C1566
22uF
25V
25V
C1567
1uF
25V
25V
C1565
0 . 1 u F
50V
50V
C1545
100uF
25V
C1501
0 . 1 u F
50V
C1505
0 . 1 u F
50V
C1503
0 . 1 u F
OPT
OPT
C1512
4.7K 1%
POWER 18.5V
R1554-*2
22K
1%
POWER 18.5V
R1553-*2
0
R1507
SHARP
100
R1539
500
L1515
10uF
16V
C1538
22uF
16V
16V
C1540
22uF
16V
16V
C1569
22uF
16V
16V
C1529
22uF
16V
16V
C1549
22uF
16V
16V
C1550
CIS21J121
L1517
CIS21J121
L1512
CIS21J121
L1506
SC4215ISTRT
IC1505-*1
SEMTEK
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
THERMAL
AP2132MP-2.5TRG1
IC1505
BCD
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[ E P ]
4.7K
1%
1%
BCD
R1560-*1
15K
1%
1%
BCD
R1565-*1
10K
BCD
R1588
+5V_NORMAL
500
BCD
L1522
0 . 1 u F
OPT
C1531
10K
BCD
R1589
100uF
16V
C1500
AOZ1073AIL
IC1500
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
10uF
25V
25V
C1516
51K
5%
R1513
1.5K
1%
R1510
9.1K
R1505
2200pF
50V
50V
C1507
10K
1%
R1514
22uF
16V
16V
C1520
0 . 1 u F
50V
50V
C1578
ESD
0 . 1 u F
50V
50V
C1579
ESD
0 . 1 u F
50V
50V
C1580
ESD
0 . 1 u F
50V
50V
C1581
ESD
6.2K
1%
1%
R1549
10K
1%
1%
R1551
POWER 3.5V
30K
1%
R1570
33K
R1508
5.6K
R1509
100
R1590
OPT
100
R1522
LGD/37_AUO
100
32_AUO/SHARP
R1521
3.9K
PWM_PULL-DOWN_3.9K
R1531
1K
PWM_PULL-DOWN_1K
R1531-*1
0 . 0 1 5 u F
50V
50V
C1582
2.2K
PANEL_DISCHARGE_RES
R1592
2.2K
PANEL_DISCHARGE_RES
R1593
CIS21J121
OPT
L1523
+12V
+3.5V_ST
22uF
16V
C1584
0 . 1 u F
16V
C1583
CIS21J121
L1524
0 . 1 u F
50V
50V
C1514
15
<OS MODULE PIN MAP>
PIN No
INV_ON
V o u t = ( 1 + R 1 / R 2 ) * 0 . 8
+5V_NORMAL
R2
3A
S T _ 3 . 5 V - - > 3 . 5 V
SEMTEK Vo=0.8*(1+R1/R2)
B C M c o r e 1 . 2 6 V v o l t
INV_ON
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
INV_ON
INV_ON
3A
C l o s e t o I C
+5V_USB
R2
E r r _ o u t
20V-->3.5V
Power_DET
R2
BCM A2.5V
15V-->3.6V
PANEL_POWER
22
NC
2A
PWM_DIM
R1
24V-->3.48V
FROM LIPS & POWER B/D
R1
AUO PSU
Placed on SMD-TOP
R2
18
V4:VBR-A
V5:NC
SHARP
E r r _ o u t
CMO(09)
New item
PWM_DIM
PWM_DIM
GND
20
MAX 350mA
A-DIM
R1
MAX 1000mA
A-DIM
E r r _ o u t
24
R1
Max 1100 mA
12V-->3.58V
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
BCM DDR 1.8V
380mA
LGD
+3.3V_NORMAL
MAX 3.1A
MAX 2.3A
MAX 0.8A
5V/12V EXT PowerOut
R2
R1
C IN
Placed on SMD-TOP
R e p l a c e d P a r t
n o t t o R E S E T a t 8 k V E S D
Chameleon(EU_GP2_BCM3556)
2 0 1 0 . 1 2 . 2 0
POWER
xxLV375H-ZA
AUO LIPS
INV_ON
PWM_DIM
E r r _ o u t
A-DIM
PWM_DIM
$ 0 . 1 6 5
BCD VOUT : 2.514V
SEMTEK VOUT : 2.533V
BCD Vo=0.6*(1+R1/R2)
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