LG 42LW650G/S/T/W Service Manual page 46

FROM LIPS & POWER B/D
+3.5V_ST
RT1P141C-T112
Q502
R508 1 3
4.7K
NORMAL_26~55
R502 C P502
2
RL_ON 10K FW20020-24S
B Q501
2SC3052
E
PWR ON
1 1 2 2
24V
3 3 4 4
GND
+3.5V_ST 5 5 6 6
L503
GND
7 7 8 8
MLB-201209-0120P-N2
3.5V
9 9 10 10
3.5V
11 11 12 12
C508
GND
13 13 14 14
0.1uF
GND
16V 15 15 16 16
12V
17 17 18 18
12V
19 19 20 20
+12V 12V
21 21 22 22
L501
GND/P.DIM2
23 23 24 24
MLB-201209-0120P-N2
SLIM_32~55
C506
25
0.1uF
50V SMAW200-H24S2
P501
#16/#20/#23
LD - GND OR USE
LE(N.L.D.) - OPEN
LE(L.D.) - USE
Power_DET
+12V +3.5V_ST
R517
100K
PD_+12V PD_+3.5V
R512 R515
IC503
2.7K 0
1% 5% NCP803SN293
VCC
3
1
C580
PD_+12V
0.1uF GND
R513
16V
1.21K
1%
PD_+18.5_20_24V
R516
+24V
100K
PD_+18.5_20_24V
PD_+18.5V
PD_+20V
IC502
R510-*3 PD_24V
R510-*4
4.7K R510
5.6K NCP803SN293
8.2K
1% 1%
1%
VCC
3
PD_+20V PD_+18.5V 1
PD_24V
C581
R511-*4 R511-*3
GND
R511 0.1uF
1.3K
1.21K
1.5K
1% 16V
1% 1%
PD_+18.5_20_24V
+0.9V_CORE_BCM35230
+12V
L502
BLM18PG121SN1D
Placed on SMD-TOP
C503 C505
10uF
10uF
16V
16V
POWER_ON/OFF2_2
R503
1K
IC501
EP_GND
TPS40192DRCR
C504
100pF
50V ENABLE HDRV
1 10 R577 4.7
0.9V_CORE_FB
FB SW
2 9
R504 C510
2K
0.01uF
50V COMP BOOT
3 8
C509 50V
220pF
VDD LDRV
+3.3V_Normal 4 7 R578 4.7
TEST
R507
PGD BP5
10K OPT
5 6
C513
C507 0.1uF
1000pF 16V
R506
50V
330
R505
6.8K
1% R1
0.9V_CORE_FB
R501
12K
1%
R2
Vout=0.591*(1+R1/R2)
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
+24V
L504
24V
MLB-201209-0120P-N2
24V
GND
OS Module OPT
C519
GND
0.1uF
3.5V 50V
3.5V
POWER_16_URSA_SCAN
GND R574 0
L_VS
GND/V-sync
R573 0
L/DIM0_VS
INV_CTL_18
INV ON POWER_16_BCM_SCAN
INV_CTL_18
A.DIM
A_DIM_20
P.DIM1
PWM_DIM_22
Err OUT
A_DIM_20
ERROR_OUT_24
PWM_DIM_22
ERROR_OUT_24
+3.5V_ST
R522
10K
OPT
R520
POWER_DET
RESET 100
2
ESD
C520
0.1uF
16V
not to RESET at 8kV ESD
R519
15V-->3.6V
RESET 100
2
20V-->3.5V
PD_+18.5_20_24V
24V-->3.48V
12V-->3.58V
ST_3.5V-->3.5V
Max 7350 mA
Q503
AON7430
D 5 4 G
3 S_3
2 S_2
+0.9V_CORE
1 S_1
L505
1uH
OPT OPT
C522 C523 C524 C525
22uF 22uF 47uF 10uF
10V 10V 10V 10V
G 4 5 D
S_3 3
S_2 2
S_1 1
AON7200
Q508
Switching freq: 600K
DUAL COMPONENT
Q501,Q504,
1ST : 0TRIY80001A 2ND : 0TR387500AA
Q505,Q506
1ST : 0TRIH80004A, 2ND : EBK61012501, 3RD : 0TR102009AM
Q502
Q507
1ST : EBK60752501, 2ND : EBK61011501
IC502,IC503 1ST : EAN61151001, 2ND : EAN60670101
R532
POWER_18_INV_CTL
100
R533 POWER_18_A_DIM
A_DIM
0
POWER_20_A_DIM
R531 0
A_DIM
POWER_20_PWM_DIM
PWM_DIM
R538 0
+3.3V_Normal
ERROR_OUT_PULL_UP
R523
4.7K
ERROR_OUT
R529 0
POWER_20_ERROR_OUT
POWER_22_A_DIM
R535 0
A_DIM
POWER_22_PWM_DIM
PWM_DIM
R526 0 R540 0
NON_OPC/NON_IOP
R527 0
POWER_24_PWM_DIM
POWER_24_INV_CTL
R537
100
ERROR_OUT
R541 0
POWER_24_ERROR_OUT
<OS MODULE PIN MAP>
AUO
PIN No LGD CMO(09)
INV_ON A-DIM INV_ON
18
V4:VBR-A
20 Err_out
NC
V5:NC
22 PWM_DIM A-DIM
PWM_DIM
Err_out
INV_ON PWM_DIM
24
LED:GND
CHECK PWR/MODULE PIN MAP
+3.3V_NORMAL
+12V
L507
IC505
BLM18PG121SN1D +3.3V_Normal
[EP]PGND TPS54425PWPR
VIN2 VO
14 1
VIN1 VFB
C535 13 2
C501 C502
0.1uF
10uF 10uF
R562
16V 16V 50V
VBST VREG5
0
OPT OPT
12 3
1/10W C512
4A
1uF
5%
SW2 SS 25V
C511 11 4
0.1uF
R521
50V
0
SW1 GND
10 5
R509
100K
PGND2 PG
9 6
PGND1 EN
R514
8 7
C537
POWER_ON/OFF2_2
0.1uF
OPT
Vout=0.8*(1+R1/R2)
+2.5V_BCM35230
Max 960 mA
IC504
AP2132MP-2.5TRG1 [EP]
+3.5V_ST
1 8
OPT
PG GND
R528
POWER_ON/OFF2_1
10K
2 7
EN ADJ
3 6
VOUT
VIN
C533
2A
0.1uF
C527 4 5
OPT
10uF +5V_Normal
NC
VCTRL
6.3V
EAN61387601
C531
1uF
OPT
Vout=0.6*(1+R1/R2)
+12V
L511
12V_PANEL
MLB-201209-0120P-N2
R555
22K
OPT
R554
10K
C
R553
47K B Q505
PANEL_CTL
2SC3052
E
+3.5V_ST
+3.3V_Normal +1.5V_DDR
R546
1K
R551
OPT
10K
C
R543 R547 +3.5V_ST
10K INV_CTL
B
6.8K
OPT Q504
L517
E 2SC3052
R552
BLM18PG121SN1D
10K
OPT
R591
POWER_ON/OFF1
10K
SHARP C590
10uF
10V
INV_ON
Err_out
PWM_DIM
GND
MAX 2.8A
+12V
L514
BLM18PG121SN1D
R534
10K
Placed on SMD-TOP
1%
C546
R2
10uF
16V
R530
33K
1%
C595
R1 22pF
50V
C514 R525
330
3300pF
1%
50V
10K
+3.3V_Normal
Vout=0.8*(1+R1/R2)
L508
2uH
+5V_USB+WIFI
C517 C518
22uF 22uF
10V 10V
+12V
L513
CIC21J501NE
+2.5V_BCM35230
C521
10uF
R544 25V
18K
R2
1%
R545
56K R1
1%
C538 C539
47uF 10uF
10V 6.3V
PANEL_POWER
TYP 1450mA
PANEL_VCC
C551
C550
0.1uF
0.01uF
50V
50V
Q507
AO3407A
C552
10uF
G
25V
C563
0.1uF
50V
C
B Q506
2SC3052
E
R557
22K
Max 800mA
IC508
+1.5V_DDR
AP7173-SPG-13 HF(DIODES)
[EP]
IN OUT
1 8
R1
PG FB
2 7
R595
VCC SS 4.3K
3 6 1%
C594
1.5A
22uF
EN GND C593 10V
R593
4 5
560pF 3.9K
50V 1%
R2
R592
1K
1%
Vout=0.8*(1+R1/R2)
+5V_Normal
MAX 1A
IC507
AOZ1073AIL-3
L516
3.6uH
PGND LX_2
1 8
NR8040T3R6N
VIN LX_1
2 7
3A C568
AGND EN POWER_ON/OFF2_1
22uF
R1
3 6
10V
R566
10K
FB COMP R564 12K
4 5
OPT
C559
C557
0.1uF C565
2200pF
100pF
16V
50V
OPT
R2
Switching freq: 500K
MAX 1.9A
+5V_USB
IC506
MP8706EN-C247-LF-Z
IN GND
1 8
C528
OPT
1uF
SW_1 VCC C529 C530 C532 C534
2 7 50V 100pF
100pF 22uF 0.1uF
50V 50V 10V 16V
R1
3A R542
OPT
SW_2 FB 10K
3 6
C526
0.1uF
POWER_ON/OFF2_1
BST EN/SYNC
4 5
R539 R548
22 10K
EAN31346002
R2
L509
3.6uH
NR8040T3R6N
Vout=(1+R1/R2)*0.8
Vout=0.8*(1+R1/R2)
BCM35230
POWER
5
LGE Internal Use Only
C591
0.1uF
16V
+5V_Normal
C570
22uF
16V
C536
0.1uF
16V
58