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4. TROUBLE SHOOTING
CIRCUIT
TP
FL401
TP3
1
LCD_WR
INOUT_A1
2
LCD_RS
INOUT_A2
3
LCD_CS
INOUT_A3
4
INOUT_A4
TP4
TP4
FL402
1
LCD_DATA07
INOUT_A1
2
LCD_DATA05
INOUT_A2
3
LCD_DATA03
INOUT_A3
4
LCD_DATA01
INOUT_A4
FL400
TP2
1
LCD_DATA06
INOUT_A1
2
LCD_DATA04
INOUT_A2
3
LCD_DATA02
INOUT_A3
4
LCD_DATA00
INOUT_A4
TP2
LED_CA1
LED_CA2
LED_CA3
C416
33p
LGE Internal Use Only
ICVE10184E150R101FR
9
INOUT_B1
8
INOUT_B2
7
INOUT_B3
6
INOUT_B4
15pF
ICVE10184E150R101FR
9
INOUT_B1
8
INOUT_B2
7
INOUT_B3
6
INOUT_B4
15pF
ICVE10184E150R101FR
9
INOUT_B1
8
INOUT_B2
7
INOUT_B3
6
TP401
INOUT_B4
15pF
Charge Pump
TP5
VBAT
TP5
NC2
15
NC1
10
VOUT
20
LED1
19
LED2
18
LED3
17
LED4
16
C417
C418
C414
C415
33p
33p
1u
33p
C412
4. TROUBLE SHOOTING
VIO
R401
R406
100K
100K
LED_CA1
LED_CA2
LED_CA3
TP400
LCD_VSYNC
R403
LCD_ID
100K
GP : LOW
LGIT : HIGH
VHP
VIO VBAT
C457
1u
R417
100K
ENA
9
AVIN
13
PVIN
U400
6
SDA
8
SCL
7
C413
2.2u
1u
C411
1u
75/140
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Copyright © 2010 LG Electronics. Inc. All right reserved.
VBAT
35
34
C423
33
2.2u
32
31
30
R405
29
100K
28
27
26
25
LCD_RESET
24
23
22
D401
21
20
DNI
19
18
17
16
15
14
13
12
11
10
9
VIO
VIO
8
7
6
5
4
3
2
C402
C401
1
1u
CN401
1u
I2C_SDA2
I2C_SCL2
C410
2.2u
Only for training and service purposes
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