19LV2500-ZG, 19LV250A-ZG, 19LV250N-ZG, 19LV250U-ZG (CHASSIS:LD01R) - LG TV Service Manual (repair manual). Page 27

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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.
D404
100V
1N4148W
R442
3.6K
1/10W
C414
10uF
25V
V4
R443
33
R404
33
TH400
47k-ohm
OPT
L401
10uH
3.1A
C440
4.7uF
50V
VGH_S
(+27V)
C411
0.1uF
50V
C424
0.1uF
50V
R444
33
C421
10uF
25V
D405
100V
1N4148W
V13
R436
2K
1/8W
1%
OPT
R411
2.2
FLK
C450
10uF
25V
Q401
2SC3052
E
B
C
C442
10uF
25V
OPT
V17
VCC_LCM
(+3.3V)
R432
9.1K
1/8W
V12
V5
HVDD
(+8.4V)
VDD_LCM
(+16.8V)
VL
(+5V)
C436
4.7uF
50V
C412
0.1uF
50V
R439
22
C402
10uF
25V
C439
10uF
25V
OPT
C419
0.1uF
50V
C454
4.7uF
50V
V6
C429
10uF
25V
OPT
D402
40V
SMAB34
R428
33
C432
1uF
25V
R416
18K
1/10W
C430
4.7uF
50V
C405
10uF
25V
V18
R415
0
1/10W
C443
0.1uF
50V
C441
0.1uF
50V
C449
0.1uF
50V
OPT
R401
33
VGH_M
VDD_LCM
(+16.8V)
R424
33
C456
1uF
25V
VCOMOUT
C403
10uF
25V
OPT
R446
0
HVDD
(+8.4V)
C433
10uF
25V
R426
680
VDD_LCM
(+16.8V)
V15
C409
1uF
25V
D403
40V
SMAB34
R410
120K
OPT
VGL
(-5V)
C400
56pF
50V
R413
680
C452
4.7uF
50V
SWB
R417
18K
1/10W
R429
0
1/10W
R431
10K
C413
1000pF
HVDD
(+8.4V)
V14
R419
0
I2C_SCL
V1
L402
22uH
2.2A
D400
100V
1N4148W
VGH_S
(+27V)
VGH
(+27V)
C415
1uF
25V
C453
1uF
10V
C418
10uF
25V
OPT
C446
1uF
25V
VCC_LCM
(+3.3V)
I2C_SDA
C420
10uF
25V
OPT
R438
0
C431
10uF
25V
R409
0
1/10W
C423
10uF
25V
R425
33
VDD_LCM
(+16.8V)
R403
OPT
R400
15K
1%
R437
0
OPT
R433
0
C426
10uF
25V
OPT
C404
10uF
25V
C428
4.7uF
50V
Q400
MMBT3906(NXP) 
E
B
C
C437
1uF
10V
R427
0
1/10W
VCC_LCM
(+3.3V)
I2C_SDA
V9
VCC_LCM
(+3.3V)
VLCD_POWER
(+12V)
VLCD_POWER
(+12V)
R445
10K
R435
0
C455
0.1uF
50V
R405
2.7K
R423
33
R406
0
1/10W
VCOMFB
C416
0.01uF
50V
C410
10uF
25V
R440
0
1/10W
CTRLP
VLCD_POWER
(+12V)
R407
OPT
VL
(+5V)
D401
100V
1N4148W
C427
0.1uF
50V
DPM
V7
VDD_LCM
(+16.8V)
I2C_SDA
R418
10K
C401
10uF
25V
R402
33
VGH
V16
C406
10uF
25V
OPT
VGH_S
(+27V)
R447
0
SWB
R430
5.1K
VCC_LCM
(+3.3V)
C417
0.1uF
50V
I2C_SCL
C451
10uF
25V
TCOMP
V3
C434
10uF
25V
R414
33K
R420
22
CTRLP
I2C_SCL
TCOMP
R441
10K
V10
GSC
V2
VCC_LCM
(+3.3V)
R448
10K
L400
22uH
C457
10uF
25V
C458
10uF
25V
VCORE
(+1.0V)
TCON_RST
R449
33
VGL_FB
VGL_FB
R450
0
1/10W
R451
0
1/10W
R452
0
1/10W
R453
0
1/10W
R408
150K
1%
C422
120pF
50V
C407
0.47uF
50V
C408
0.47uF
50V
R454
10
1/10W
R455
10K
R456
10K
OPT
VCC_LCM
(+3.3V)
R412
0
L403
2.2uH
LQM2HPN2R2MG0L
C425
2200pF
50V
IC401
MAX17139
3
VL
2
TCOMP
4
AGND
1
EN1
6
PVINB3
5
AVIN
7
BST3
8
SWB3
9
OUT3
10
PGND3
11
SS
12
COMP
13
PGND_1
14
PGND_2
15
SW_1
16
SW_2
17
SWI
18
SWO
19
NC_1
20
CTRLP
21
VGH
22
VGL
23
NC_2
24
CTRLN
25
NC_3
26
RST
27
A0
28
SCL
29
SDA
30
VLOGIC2
31
PGND2
32
SWB2
33
VLOGIC1
34
NC_4
35
SWB1_1
36
SWB1_2
37
BST1
38
PVINB12_1
39
PVINB12_2
40
NC_5
41
[EP]AGND
IC402
BUF08630
1
SDA
3
DVDD
7
AVDD_AVDD
9
BKSEL
10
GM1
11
GM2
12
GM3
13
GM4
14
GM5
15
GM6
16
NC_1
17
HVDD
18
GM7
19
GM8
20
SCL
5
VCOM_OUT
8
AVDD_1
6
VCOM_FB
4
VCOM_GND
2
A0
21
EP[GND]
IC403
BUF08630
1
SDA
3
DVDD
7
AVDD_AVDD
9
BKSEL
10
GM1
11
GM2
12
GM3
13
GM4
14
GM5
15
GM6
16
NC_1
17
HVDD
18
GM7
19
GM8
20
SCL
5
VCOM_OUT
8
AVDD_1
6
VCOM_FB
4
VCOM_GND
2
A0
21
EP[GND]
IC400
KIA3820FK
3
RE
2
VGH_M
4
CE
1
VGH
5
VDD
6
VDPM
7
GND
8
VFLK
C435
22uF
10V
C438
22uF
10V
C444
0.22uF
50V
OPT
C445
0.22uF
50V
OPT
C448
0.22uF
50V
C447
0.22uF
50V
T-Con Power/P-Gamma/GPM
2010. 10. 20
04
LG1121 GP3
Place Bottom
Place Bottom
Place Bottom
0xE8
Place Bottom
Place Bottom
[PMIC Block]
0xEA
[P-Gamma Block]
[GPM Block]
to prevent inrush current
Display
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