LG 27GL850 Service Manual page 28

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
PANEL_ON
C418
0.1uF
16V
C415
0.1uF
50V
R413
2K
OPT
R401
9.1K
IC402
MP2315S
3
SW
2
IN
4
GND
1
AAM
5
BST
6
EN
7
VCC
8
FB
C406
0.1uF
50V
C420
0.1uF
50V
+19V
C414
0.1uF
16V
OPT
C401
4.7uF
25V
C403
4.7uF
25V
JP401
JP400
C409
0.1uF
50V
C410
68uF
35V
105C
+19V
C428
4.7uF
25V
C424
4.7uF
25V
C427
4.7uF
25V
R408
100
JK400
DS439-F01T1BA-A
1
1
2
2
4
4
+3.3V_NORMAL
R424
10K
Q403
2N3904S
E
B
C
Q401
2N3904S
E
B
C
R404
10K
R403
1K
PD_CTLZ_1.8V
AR401
10K
PD_CTL
R423
1K
PD_CTL_DDR
AR400
10K
PD_CTLZ_1.15V
+3.3V_NORMAL
R422
10K
1%
R414
51K
L400
BLM15PX121SN1
C438
0.1uF
50V
C429
10uF
10V
C430
10uF
10V
R434
47K
1%
R425
36K
1%
R427
200K
R433
24K
1%
ZD402
2.5V
PD_CTLZ_1.15V
C432
0.47uF
50V
R430
100
C434
0.1uF
16V
C436
10uF
10V
C431
0.1uF
16V
+1.8V_DDR
C435
10uF
10V
IC403
MP2122AGJ
3
SW2
2
EN2
4
EN1
1
FB2
5
GND
6
SW1
7
IN
8
FB1
R429
10K
OPT
C433
0.1uF
50V
ZD403
2.5V
R428
10K
OPT
C437
10uF
10V
+5V_STANDBY
PD_CTLZ_1.8V
R431
100
+1.15V_VDD
R432
200K
R426
33K
1%
Q400
T2N7002AK
S
G
D
Q402
T2N7002AK
S
G
D
L403
10.0uH
R400
120K
1%
IC400
MP2315S
OPT
3
SW
2
IN
4
GND
1
AAM
5
BST
6
EN
7
VCC
8
FB
C404
0.1uF
50V
OPT
L402
10.0uH
OPT
C411
0.1uF
50V
OPT
+19V
R406
100K
OPT
C405
0.1uF
16V
OPT
C400
4.7uF
25V
OPT
C402
4.7uF
25V
OPT
C416
4.7uF
25V
OPT
C412
4.7uF
25V
OPT
C413
4.7uF
25V
OPT
R407
100
OPT
R411
18K
1%
OPT
R412
5.6K
1%
OPT
R410
51K
OPT
L401
BLM15PX121SN1
OPT
C408
0.1uF
16V
OPT
+3.3V_NORMAL
C407
0.1uF
50V
OPT
R409
15K
OPT
R435
100K
OPT
R402
5.6K
OPT
R436
100K
L410
2.2uH
L409
2.2uH
C439
33pF
50V
C440
33pF
50V
C441
10uF
10V
OPT
C442
10uF
10V
OPT
+10V_PANEL
MAIN POWER
3A
For Jig Test
DC-JacK (Straight Type)
20141112 OPT->APPLY
32GK750F 2017.04.13
8 4
Power sequence Circuit for 1.8V / 1.15V
17.03.16 change the panel volate value for AUO panel
3A
Setting: 3.37V(=0.8(1+18K/5.6K)
20141112 OPT->APPLY
3.3V
1.8V, 1.15V
12V for panel
Setting: 10.4V(=0.8(1+120K/10K)