LG 42LV375H Service Manual page 32

FROM LIPS & POWER B/D
+3.5V_ST
RT1P141C-T112
Q1502
1 3
2
R1504
4.7K
WAFER-STRAIGHT
R1500 C NORMAL_26~52
P1501
10K
B Q1500
FW20020-24S
RL_ON
2SC3052
E
PWR ON 24V
1 1 2 2
24V 24V
3 3 4 4
GND GND
+3.5V_ST 5 5 6 6
L1503
GND GND
7 7 8 8
MLB-201209-0120P-N2
3.5V 3.5V
9 9 10 10
3.5V 3.5V
11 11 12 12
C1500
C1504 C1506
GND GND
100uF 13 13 14 14
0 . 1 u F 0 . 1 u F
16V GND GND/V-sync
16V 16V 15 15 16 16
12V INV ON
17 17 18 18
12V A.DIM
19 19 20 20
+12V 12V P.DIM1
21 21 22 22
L1502
GND/P.DIM2 Err OUT
23 23 24 24
MLB-201209-0120P-N2
25
C1501 C1503 C1505
100uF 0 . 1 u F 0 . 1 u F
25V 50V 50V
SLIM_32~52
P1500
SMAW200-H24S2
WAFER-ANGLE
<OS MODULE PIN MAP>
PIN No LGD CMO(09) AUO PSU AUO LIPS SHARP
18 INV_ON A-DIM INV_ON INV_ON INV_ON
V4:VBR-A
20 NC E r r _ o u t A-DIM
E r r _ o u t
V5:NC
22 PWM_DIM PWM_DIM A-DIM PWM_DIM
PWM_DIM
24 E r r _ o u t INV_ON PWM_DIM E r r _ o u t GND
+12V
L1500
CIC21J501NE
OPT
C1508
C1509
C1582 C1510
0 . 0 1 u F
0 . 1 u F
0 . 0 1 5 u F 10uF
25V
50V
50V 25V
R1508 C1513
33K 4 . 7 u F
R1503
50V
22K
R1509
5.6K
OPT
C
R1502
10K
B Q1503
2SC3052
C
R1501 R1506
E
47K 22K
B Q1501
PANEL_CTL
2SC3052
E
+12V
IC1500
AOZ1073AIL
L1501
PGND LX_2
1 8
VIN LX_1
2 7
3A
AGND EN
C1502 C1516
3 6
10uF
10uF
R1511
25V 25V
10K
FB COMP
4 5
R1505
9.1K
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.
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
+12V
L1507
CIC21J501NE
C1528
+24V
10uF
25V
L1505
MLB-201209-0120P-N2
C1518 C1524
68uF
0 . 1 u F
35V
50V
OPT
R1590
100
+3.3V_NORMAL
+3.5V_ST
NON_CMO R1523
1K
R1516
100
OPT
B C M c o r e 1 . 2 6 V v o l t
R1534
C
10K
R1528
R1515
10K
B
100
INV_CTL
R1520
CMO Q1505 R1535
6.8K
10K
OPT E 2SC3052
OPT
R1525 0 CMO
A_DIM
R1526 0 32_AUO
R1527 0 LGD_V4/37_AUO
R1524 0 OPT
R1517
0
R1519
LGD/37_AUO
0 NON_OPC +3.5V_ST
PWM_DIM
R1518 R1529
0 C1517 C1521 0
32_AUO 1uF OPT
0 . 1 u F
25V SCAN_BLK1/OPC_OUT +12V
OPT
R1530
OPT
0
R1531-*1
R1531
1K
PWM_PULL-DOWN_1K
3.9K
PWM_PULL-DOWN_3.9K
R1521
+3.3V_NORMAL
100
32_AUO/SHARP
R1533
4.7K
R1522
C1570
100
ERROR_OUT 0 . 1 u F
16V
LGD/37_AUO
C1512
0 . 1 u F
OPT
PANEL_POWER
New item
Q1504
PANEL_VCC
AO3407A
G
C1515
1uF
C1522 R1592 R1593
25V
2.2K 2.2K
0 . 1 u F
OPT
50V
PANEL_DISCHARGE_RES
PANEL_DISCHARGE_RES
5V/12V EXT PowerOut
+5V_USB
+5V_USB
MAX 1000mA
L1504
3.6uH
NR8040T3R6N
OPT
C1520 C1523 C1525
POWER_ON/OFF2_1
C1519
22uF 0 . 1 u F 0 . 1 u F
R1
100pF
16V 16V 16V
50V
C1507
2200pF
50V
R2
Vout=(1+R1/R2)*0.8
+5V_NORMAL
IC1502
AOZ1072AI
L1511
3.6uH
PGND LX_2
1 8
NR8040T3R6N
R1544
VIN LX_1
10K
2 7
C1568
2A
POWER_ON/OFF2_2
C1578
0 . 1 u F
R1
AGND EN 0 . 1 u F
50V
3 6
50V
C1530
ESD
10uF
FB COMP
25V
4 5
R1543 C1535
12K 2200pF
R2
Vout=0.8*(1+R1/R2)
IC1503
R1545
MP2208DL-LF-Z
10K
EP
C1580
R1546
0 . 1 u F
3.9K
AGND FB
50V
1 14 OPT
ESD
ESD
SS EN/SYNC D1501
2 13
5.6V
PGND_1 PGND_2
3 12
L1509
2uH
SW_1 SW_2
4 11
R1569
IN_1 IN_2
5 10 470K
C1537
1%
R1538 0 . 1 u F R1
NC POK 100K 16V
6 9 R1570
R1572 30K
BS VCC 10 R1575 1%
7 8 0 OHM
0
R1536
ESD 0
R1576
R1536-*1
910K
100K
1%
R2
C1527 C1572
C1571
22uF 0 . 1 u F 22uF
16V
16V 16V
BCM DDR 1.8V
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
L1510
3.6uH
+3.5V_ST
R e p l a c e d P a r t
NR8040T3R6N
R1547
IC1501
10K
MP2108DQ
POWER_ON/OFF1
L1508 C1581 C l o s e t o I C
0 . 1 u F
CIC21J501NE BST RUN
50V
1 10
ESD
VIN VREF
2 9
3A
LX COMP
3 8 C1577
0 . 0 1 u F
Placed on SMD-TOP $ 0 . 1 6 5
25V
PGND FB
4 7
C1529
C IN 22uF
C1533
16V SGND SS R1537
5 6 3300pF
10K
50V
C1534 1/10W
0 . 1 u F 1%
R1540
50V
6.8K
+12V
R1532
100K
OPT
IC1508
MP2305DS
C1562
EXT12V_CTRL
0 . 1 u F
50V
BS SS
1 8
C1560
0 . 0 1 u F
R1580
50V IN EN 1K
2 7
EXT5V_CTRL
C1561
C1559 R1579
SW COMP 2700pF
0 . 4 7 u F 10K
3 6
25V
L1519
50V
R1578 CB3216PA501E
GND FB
56K
4 5
R1577
12.4K C1563
22uF
25V
L1518
22UH
15V-->3.6V
20V-->3.5V
MAX 350mA 24V-->3.48V
+5V_NORMAL 12V-->3.58V
ST_3.5V-->3.5V
Power_DET
R1548
47K C1540 C1544
C1569
1%
22uF 22uF 0 . 1 u F
16V 16V 16V
R1549
+3.5V_ST
6.2K
1%
OPT
C1539 POWER 3.5V
R1551
100pF
10K
50V
1%
POWER 24V
POWER 18.5V
R1553-*1
R1553-*2
24K
22K 1% 1%
R1550
10K
1%
C1514
POWER 24V
0 . 1 u F
POWER 18.5V R1554-*1
50V
4.3K
R1554-*2
4.7K 1% 1%
+3.3V_NORMAL
MAX 3.1A
+12V
A1.2V
D1.2V
L1513
CIC21J501NE
L1512
CIS21J121
C1579
0 . 1 u F
EN
50V
C1558 ESD
0 . 1 u F
FB
16V
C1545
C1546 COMP
0 . 1 u F
22uF
+3.5V_ST 50V 25V
R1557
20K
C1548
3300pF
50V
C1584
C1583
0 . 1 u F 22uF
16V
16V
BCM A2.5V
Max 1100 mA
+3.3V_NORMAL
D1.8V
AP2132MP-2.5TRG1
R1588
10K
BCD
C1574
C1547
OPT R1587
10uF 0 . 1 u F
10K
SEMTEK
C1532 16V 16V
100pF
+5V_NORMAL
R1589
R1542
BCD 10K
10K
VCTRL
L1522
1%
500
OPT
C1538 C1542
BCD
R1 C1575
0 . 1 u F
10uF 0 . 1 u F
16V
16V
OPT
C1531
R2
Placed on SMD-TOP 0 . 1 u F
R1583
100
IC1509
MP5000DQ
GND SOURCE_5 EXT_12V
1 10
C1564
470pF
DV/DT SOURCE_4
50V 2 9
L1520
R1581 CB3216PA501E
ENABLE/FAULT SOURCE_3
1K
3 8
I-LIMIT SOURCE_2 C1567 C1511
4 7 22uF 0 . 1 u F
50V
25V
EXT_5V NC SOURCE_1
5 6
11
VCC
+12V
D1500
+3.5V_ST C1565 C1566
1uF 22uF
25V 25V
R1582
+3.5V_ST R1586
4.7K
10K
EXT_PWR_DET R1585
C
4.7K
R1584
1K
Q1506 B
2SC3875S(ALY)
Q1507
E
2SC3875S(ALY)
+3.5V_ST +3.5V_ST
+12V
R1564
100K
R1555 R1559 OPT
12K 14K R1567
IC1507
1% 10K
1%
NCP803SN293
R1539
100
VCC RESET
3 2
POWER_DET
1
R1552
5.1K
GND
5%
NON_PD_+3.5V ESD
C1551
0 . 1 u F
R1556
16V
100K
+24V
POWER 20V
IC1506
R1553
24K NCP803SN293
n o t t o R E S E T a t 8 k V E S D
1% R1566
VCC RESET 100
3 2
POWER 20V
1
R1554
GND
5.1K
5%
+3.3V_NORMAL
MAX 2.3A
A3.3V
R1558
D3.3V
L1516
10K
POWER_ON/OFF2_2 CIC21J501NE
C1555
0 . 1 u F
16V
VIN
L1517
6
CIS21J121
IC1504 R1562
LX
27K C1549 C1550 C1552
C1573
4 7
1%
22uF 22uF 10uF 0 . 1 u F
16V 16V 16V
AOZ1024DI 10V
5
R1563
4.7K
1%
R1571
10K
1%
MAX 0.8A
380mA
SEMTEK VOUT : 2.533V
IC1505
BCD VOUT : 2.514V
[ E P ]
A2.5V
PG GND
1 8 SEMTEK BCD
R1560
R1560-*1
18K 4.7K
R2
1% 1% L1515
EN ADJ
2 7 500
SEMTEK BCD
R1565-*1
R1565
39K R1 15K
VIN VOUT
1% 1%
3 6
BCD
NC
C9220
C1576 C1553
4 5
10uF
10uF 0 . 1 u F
16V 16V 16V
SEMTEK Vo=0.8*(1+R1/R2)
BCD Vo=0.6*(1+R1/R2)
IC1505-*1
SC4215ISTRT
NC_1 GND
1 8
SEMTEK
EN ADJ
2 7
VIN VO
3 6
NC_2 NC_3
4 5
Chameleon(EU_GP2_BCM3556)
xxLV375H-ZA 2 0 1 0 . 1 2 . 2 0
POWER
15
LGE Internal Use Only
C1556
0 . 1 u F
16V