Read LG 37LV5700 (CHASSIS:LC12E) Service Manual online
THERMAL
THERMAL
THERMAL
THERMAL
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.
R524
0
POWER_24_GND
R552
10K
OPT
L503
MLB-201209-0120P-N2
C510
0.01uF
50V
0.01uF
50V
R558-*1
22K
5V_PANEL
A_DIM
+2.5V_BCM35230
0
R540
NON_OPC/NON_IOP
PWM_DIM_22
+3.5V_ST
C519
0.1uF
50V
C503
10uF
16V
10uF
16V
+12V
+0.9V_CORE
Q502
RT1P141C-T112
1
2
3
R543
6.8K
OPT
C513
0.1uF
16V
R547
10K
10K
PANEL_VCC
R554
10K
10K
OPT
A_DIM_20
POWER_ON/OFF2_1
R575
2K
1/8W
PANEL_DISCHARGE_REG
INV_CTL
R531
0
POWER_20_A_DIM
C546
10uF
16V
10uF
16V
A_DIM_20
C507
1000pF
50V
INV_CTL_18
R559 1.8K
12V_PANEL
R535
0
POWER_22_A_DIM
C509
220pF
50V
PANEL_CTL
R566
10K
R522
10K
10K
OPT
R505
6.8K
1%
1%
C560
1uF
25V
OPT
Q504
2SC3052
E
B
C
0
R527
POWER_24_PWM_DIM
0
R526
POWER_22_PWM_DIM
C538
47uF
10V
+5V_Normal
L516
3.6uH
NR8040T3R6N
R520
100
100
R577
4.7
0.1uF
C533
OPT
R576
2K
1/8W
PANEL_DISCHARGE_REG
+3.5V_ST
L514
BLM18PG121SN1D
R572
10K
1%
C570
22uF
16V
22uF
16V
+3.5V_ST
C551
0.1uF
50V
0.1uF
50V
+12V
ERROR_OUT_24
R532
100
100
POWER_18_INV_CTL
R501
12K
1%
1%
C557
2200pF
C527
10uF
6.3V
+24V
A_DIM
C505
10uF
16V
10uF
16V
C568
22uF
10V
22uF
10V
R502
10K
C522
22uF
10V
22uF
10V
0
R538
POWER_20_PWM_DIM
Q501
2SC3052
2SC3052
E
B
C
C508
0.1uF
16V
0.1uF
16V
C516
4.7uF
10V
R578
4.7
L501
MLB-201209-0120P-N2
R544
18K
1%
18K
1%
INV_CTL_18
R551
10K
10K
OPT
R536
10K
+3.5V_ST
R515
0
5%
0
5%
PD_+3.5V
C559
0.1uF
16V
0.1uF
16V
OPT
C524
47uF
10V
47uF
10V
OPT
R533
0
POWER_18_A_DIM
C565
100pF
50V
OPT
OPT
C531
1uF
1uF
OPT
R558
10K
12V_PANEL
C563
0.1uF
50V
0.1uF
50V
+3.3V_Normal
L506
120-ohm
R507
10K OPT
C525
10uF
10V
10uF
10V
+12V
L502
BLM18PG121SN1D
+12V
Q506
2SC3052
2SC3052
E
B
C
R570
51K
1%
R528
10K
10K
OPT
+3.5V_ST
L504
MLB-201209-0120P-N2
PWM_DIM
P502
FW20020-24S
FW20020-24S
NORMAL_26~55
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
ERROR_OUT
C520
0.1uF
16V
0.1uF
16V
ESD
POWER_ON/OFF2_1
C523
22uF
10V
10V
OPT
ERROR_OUT
+3.5V_ST
Q505
2SC3052
2SC3052
E
B
C
+3.3V_Normal
0
R541
POWER_24_ERROR_OUT
C552
10uF
10uF
25V
PWM_DIM_22
R555
22K
R508
4.7K
4.7K
R557
22K
0
R529
POWER_20_ERROR_OUT
R504
2K
2K
R537
100
POWER_24_INV_CTL
POWER_ON/OFF2_2
R559-*1
2.7K
5V_PANEL
R519
100
100
PD_+18.5_20_24V
PWM_DIM
IC504
AP2132MP-2.5TRG1
EAN61387601
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[EP]
+24V
+5V_Normal
Q507
AO3407A
G
D
S
R506
330
330
L511
MLB-201209-0120P-N2
12V_PANEL
ERROR_OUT_24
R546
1K
1K
+12V
C580
0.1uF
16V
0.1uF
16V
A_DIM
POWER_DET
P501
SMAW200-H24S2
SLIM_32~55
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
C506
0.1uF
50V
RL_ON
R553
47K
47K
C515
0.47uF
25V
+1.5V_DDR
R591
10K
10K
POWER_ON/OFF1
+3.5V_ST
R518
0
POWER_16_GND
C591
0.1uF
16V
C539
10uF
6.3V
C594
22uF
10V
560pF
C593
50V
10uF
C590
10V
L517
BLM18PG121SN1D
L/DIM0_VS
L_VS
R574
0
POWER_16_URSA_SCAN
R573
0
POWER_16_BCM_SCAN
R595
4.3K
1%
1%
R593
3.9K
1%
3.9K
1%
R592
1K
1%
1K
1%
R510-*3
4.7K
1%
4.7K
1%
PD_+18.5V
R510-*4
5.6K
5.6K
1%
PD_+20V
R511-*3
1.21K
1.21K
1%
PD_+18.5V
R511-*4
1.3K
1%
1.3K
1%
PD_+20V
R517
100K
100K
R516
100K
100K
PD_+18.5_20_24V
R512
2.7K
1%
2.7K
1%
PD_+12V
R513
1.21K
1%
1%
PD_+12V
R510
8.2K
1%
8.2K
1%
PD_24V
R511
1.5K
1%
1.5K
1%
PD_24V
C550
0.01uF
50V
Q503
AON7430
3
S_3
2
S_2
4
G
1
S_1
5
D
Q508
AON7200
3
S_3
2
S_2
4
G
1
S_1
5
D
L505
1uH
IC508
AP7173-SPG-13 HF(DIODES)
3
VCC
2
PG
4
EN
1
IN
5
GND
6
SS
7
FB
8
OUT
9
[EP]
IC501
TPS40192DRCR
3
COMP
2
FB
4
VDD
1
ENABLE
5
PGD
6
BP5
7
LDRV
8
BOOT
9
SW
10
HDRV
11
EP_GND
R564 12K
L507
BLM18PG121SN1D
R514
10K
C518
22uF
10V
10V
C502
10uF
16V
16V
OPT
POWER_ON/OFF2_2
C511
0.1uF
50V
0.1uF
50V
C501
10uF
16V
16V
C514
3300pF
50V
3300pF
50V
C517
22uF
10V
22uF
10V
R521
0
0
R509
100K
100K
C512
1uF
25V
25V
+3.3V_Normal
+3.3V_Normal
+12V
+5V_USB
L513
CIC21J501NE
+12V
L508
2uH
R562
0
0
1/10W
5%
5%
C535
0.1uF
50V
OPT
0.1uF
50V
OPT
R534
10K
10K
1%
C595
22pF
50V
22pF
50V
C530
100pF
50V
OPT
100pF
50V
OPT
C521
10uF
25V
10uF
25V
R539
22
22
IC506
MP8706EN-C247-LF-Z
EAN31346002
3
SW_2
2
SW_1
4
BST
1
IN
5
EN/SYNC
6
FB
7
VCC
8
GND
C536
0.1uF
16V
0.1uF
16V
R549
33K
1%
R548
10K
POWER_ON/OFF2_1
L509
3.6uH
NR8040T3R6N
C532
22uF
10V
22uF
10V
R550
6.2K
1%
C534
0.1uF
16V
0.1uF
16V
C528
1uF
50V
1uF
50V
C529
100pF
50V
OPT
R542
10K
10K
C526
0.1uF
0.1uF
IC507
AOZ1073AIL-3
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
C537
0.1uF
OPT
0.1uF
OPT
IC505
TPS54425PWPR
3
VREG5
2
VFB
4
SS
1
VO
6
PG
5
GND
7
EN
8
PGND1
9
PGND2
10
SW1
11
SW2
12
VBST
13
VIN1
14
VIN2
15
[EP]PGND
+3.3V_Normal
R530
33K
1%
R525
330
1%
R523
4.7K
4.7K
ERROR_OUT_PULL_UP
C504
100pF
50V
R503
1K
C581
0.1uF
16V
0.1uF
16V
PD_+18.5_20_24V
R545
56K
1%
56K
1%
IC503
NCP803SN293
1
GND
3
VCC
2
RESET
IC502
NCP803SN293
PD_+18.5_20_24V
1
GND
3
VCC
2
RESET
0.9V_CORE_FB
0.9V_CORE_FB
R571
3.6K
1%
DUAL COMPONENT
+1.5V_DDR
Err_out
PANEL_POWER
Q502
R1
+2.5V_BCM35230
22
LED:GND
FROM LIPS & POWER B/D
IC502,IC503
Max 960 mA
R2
INV_ON
20
R1
Q501,Q504,
Q505,Q506
Q505,Q506
PWM_DIM
Err_out
PIN No
R2
A-DIM
58
Vout=0.591*(1+R1/R2)
Vout=0.6*(1+R1/R2)
OS Module OPT
5
15V-->3.6V
CMO(09)
<OS MODULE PIN MAP>
24
1ST : EAN61151001, 2ND : EAN60670101
20V-->3.5V
TYP 1450mA
LGD
R2
1ST : 0TRIY80001A 2ND : 0TR387500AA
Power_DET
PWM_DIM
Switching freq: 500K
AUO
3A
A-DIM
GND
ST_3.5V-->3.5V
CHECK PWR/MODULE PIN MAP
Max 7350 mA
Placed on SMD-TOP
INV_ON
PWM_DIM
PWM_DIM
not to RESET at 8kV ESD
Vout=0.8*(1+R1/R2)
R1
INV_ON
MAX 1A
TEST
NC
24V-->3.48V
2A
1ST : EBK60752501, 2ND : EBK61011501
SHARP
Placed on SMD-TOP
Max 800mA
Err_out
12V-->3.58V
Q507
INV_ON
Switching freq: 600K
BCM35230
POWER
1ST : 0TRIH80004A, 2ND : EBK61012501, 3RD : 0TR102009AM
18
+5V_Normal
+0.9V_CORE_BCM35230
V4:VBR-A
V5:NC
V5:NC
#16/#20/#23
LD - GND OR USE
LE(N.L.D.) - OPEN
LE(L.D.) - USE
LD - GND OR USE
LE(N.L.D.) - OPEN
LE(L.D.) - USE
R2
R1
Vout=0.8*(1+R1/R2)
1.5A
MAX 2.8A
+3.3V_NORMAL
R2
R1
Vout=0.8*(1+R1/R2)
4A
+5V_USB+WIFI
Vout=0.8*(1+R1/R2)
MAX 1.9A
R2
Vout=(1+R1/R2)*0.8
3A
R1