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LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
CIRCUIT
VA307
DNI
C326
CN302
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
FL305
15pF
01
5
6
4
7
3
8
2
9
1
INOUT_A1
INOUT_B1
INOUT_A2
INOUT_B2
INOUT_A3
INOUT_B3
INOUT_A4
INOUT_B4
1
G
2
G
2.2u
C329
15pF
FL303
01
5
6
4
7
3
8
2
9
1
INOUT_A1
INOUT_B1
INOUT_A2
INOUT_B2
INOUT_A3
INOUT_B3
INOUT_A4
INOUT_B4
1
G
2
G
VAUX_2V85
C328
1u
C327
1u
VBAT
100
R319
0.1u
C330
15pF
FL304
01
5
6
4
7
3
8
2
9
1
INOUT_A1
INOUT_B1
INOUT_A2
INOUT_B2
INOUT_A3
INOUT_B3
INOUT_A4
INOUT_B4
1
G
2
G
VDD_IO_1V8
LCD_RS
LCD_CS_N
LCD_WR_N
LCD_VSYNC
LCD_D[02]
LCD_D[04]
LCD_D[06]
LCD_D[07]
LCD_D[05]
LCD_D[03]
LCD_D[00]
LCD_RST_N
LCD_D[01]
MLED1
MLED3
MLED2
MLED4
MLED5
LED_PWM
LCD_MAKER_ID
IFMODE
IF (IM0)
LCD ID
16BIT : H
35
11
LGIT : HIGH
8 BIT : L
1u
C319
1u
C320
1u
C321
8
V1
_
OI
_
M
A
C
R
W
P_
A
NL
_
MF
8
V1
_
E
R
O
C_
M
A
C
8
V2
_
A_
M
A
C
2.2u
C322
R309
15
LD300
LD301
C323
0.1u
VBAT
15
R310
C318
1u
1u
C315
VBAT
C312
1u
1u
C313
C314
1u
U301
24
23
22
21
20
19
18
8
7
6
5
9
4
10
3
11
2
12
1
31 41 51 61 71
L
C
S
A
D
S
N
E
M
W
P
F
C
D
N
G
P
LDO1
N2
C
LDO2
N1
C
LDO3
P1
C
LDO4
P2
C
AGND
VIN
LDOIN
LED6
LED5
LED4
LED3
LED2
LED1
VOUT
I2C_SDA
I2C_SCL
MLED1
MLED3
MLED2
MLED4
MLED5
LED_PWM
LCD_BL_CTRL
TP1
TP3
TP
TP4
TP5