LG 37LV470S Service Manual page 20

FROM LIPS & POWER B/D
+3.5V_ST
RT1P141C-T112
Q502
R508
1 3
4.7K
NORMAL_26~55
C
R502 P502
2
10K FW20020-24S
RL_ON
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
MLB-201209-0120P-N2 7 7 8 8
3.5V
9 10
9 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
SMAW200-H24S2
50V
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
NON_PD_+3.5V
0.1uF
GND
R513
16V
1.21K
1%
NON_PD_+3.5V
R516
+24V
100K
NON_PD_+3.5V
PD_+18.5V
PD_+20V
IC502
R510-*4 R510-*3 PD_24V
5.6K 4.7K R510 NCP803SN293
1% 8.2K
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%
NON_PD_+3.5V
+0.9V_CORE_BCM35230
+12V
L502
BLM18PG121SN1D
Placed on SMD-TOP
C503 C505
10uF
10uF
16V 16V
POWER_ON/OFF2_2
R503
1K
IC501
TPS40192DRCR EP_GND
C504
100pF
50V
ENABLE HDRV
1 10
R577 4.7
0.9V_CORE_FB
FB SW
2 9
R504
C510
2K
0.01uF
COMP BOOT
50V
3 8
C509 50V
220pF
VDD LDRV
+3.3V_Normal 4 7 R578 4.7
TEST R507
10K OPT PGD BP5
5 6
C513
C507 0.1uF
1000pF 16V
R506
50V
330
R505
6.8K
R1
R501
0.9V_CORE_FB
12K
1/16W
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
ERROR_OUT_24
A_DIM_20
PWM_DIM_22
ERROR_OUT_24
+3.5V_ST
R522
10K
OPT
R520
POWER_DET
100
RESET
2
ESD
C520
0.1uF
16V
not to RESET at 8kV ESD
R519
15V-->3.6V
100
RESET
2
20V-->3.5V
NON_PD_+3.5V
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 C524 C525
C523
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
POWER_18_A_DIM
R533
A_DIM
0
POWER_20_A_DIM
R531 0 A_DIM
POWER_20_PWM_DIM
PWM_DIM
R538 0
+3.3V_Normal
R523
4.7K
ERROR_OUT_PULL_UP
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) SHARP
INV_ON
INV_ON A-DIM INV_ON
18
V4:VBR-A
20 NC Err_out Err_out
V5:NC
A-DIM
22 PWM_DIM PWM_DIM PWM_DIM
Err_out
24 INV_ON PWM_DIM GND
LED:GND
CHECK PWR/MODULE PIN MAP
+3.3V_NORMAL
+12V
R542
POWER_ON/OFF2_2
OPT 10K
C532
0.1uF
16V
L507
BLM18PG121SN1D
L509
VIN 3.6uH
EN 4A
6
IC505 C534 C535
FB LX
22uF 22uF
4 7
10V 10V
C528 COMP AOZ1024DI
10uF 5
16V
R525
EAN60660601
13K
C530
3300pF
50V
Vout=0.8*(1+R1/R2)
+2.5V_BCM35230
Max 960 mA
IC504
AP2132MP-2.5TRG1 [EP]
+3.5V_ST
1 8
OPT GND
PG
R528
POWER_ON/OFF2_1
10K
2 7
EN ADJ
3 6
VIN VOUT
C533
2A
C527 0.1uF
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
C550
0.01uF
50V
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
AP7173-SPG-13 HF(DIODES)
OPT Q504
L517
E 2SC3052
R552
BLM18PG121SN1D
10K
OPT
R591
POWER_ON/OFF1
10K
C590
10uF
10V
+5V_Normal
Vout=0.8*(1+R1/R2)
MAX 2.8A
+12V
L514
BLM18PG121SN1D
+3.3V_Normal
Placed on SMD-TOP
C546
10uF
16V
R1
C537
OPT
50V
Vout=0.8*(1+R1/R2)
R2
+5V_USB+WIFI
Switching freq: 500K
+12V
+2.5V_BCM35230
L513
BLM18PG121SN1D
Placed on SMD-TOP
R544
18K R2
C545
1%
10uF
R545 16V
56K
R1
1%
C538 C539
47uF 10uF
10V 6.3V
Vout=0.8*(1+R1/R2)
PANEL_POWER
TYP 1450mA
PANEL_VCC
C551
0.1uF
50V
Q507
AO3407A
C552
10uF
G
25V
C563
0.1uF
50V
C
B Q506
2SC3052
E
R557
22K
Max 800mA
IC508
+1.5V_DDR
[EP]
IN OUT
1 8
PG FB
2 7
R595
R1
4.3K
VCC SS
3 6 1%
C594 C591
1.5A
22uF 0.1uF
EN GND C593 10V 16V
4 5 R593
560pF 3.9K
1%
50V R2
R592
1K
1%
Vout=0.8*(1+R1/R2)
MAX 1A
+5V_Normal
IC507
AOZ1073AIL-3
L516
3.6uH
PGND LX_2
1 8
NR8040T3R6N
VIN LX_1
2 7
3A
POWER_ON/OFF2_1
AGND EN
C568 C570
3 6 R1
22uF 22uF
R566
10V 10V
10K
FB COMP
OPT
4 5
C559 OPT
R564
C565
0.1uF
12K
16V 100pF
50V
R2
Switching freq: 500K
MAX 1.9A
+5V_USB
IC506
AOZ1073AIL-3
L515
3.6uH
PGND LX_2
1 8
NR8040T3R6N
VIN LX_1
2 7
3A
POWER_ON/OFF2_1
AGND EN C567 C571
3 6 R1
22uF 22uF
R565
10V 16V
10K
FB COMP OPT
OPT
4 5
C558 OPT
R563
0.1uF C564
12K
100pF
16V
50V
R2
Switching freq: 500K
BCM35230
POWER
5 58
LGE Internal Use Only