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4. TROUBLE SHOOTING
4.8 LCD Trouble
-LCD assembly status ( FPCB)
-LCD Interface’s status
-Connector combination
-Data signal through EMI filter
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
CN101
CN301
TEST POINT
NA
G1
5
G2
10
1
INOUT_A1
INOUT_A2
2
INOUT_A3
3
4
INOUT_A4
INOUT_B1
9
8
INOUT_B2
INOUT_B3
7
INOUT_B4
6
FL301
EVRC14S03Q030100R
0.1u
C310
R312
100K
VA301
R308
47K
2V8_CAM
C315
0.1u
INOUT_B2
INOUT_B3
7
INOUT_B4
6
G1
5
G2
10
1
INOUT_A1
INOUT_A2
2
INOUT_A3
3
4
INOUT_A4
INOUT_B1
9
8
FL302
ICVE10184E050R101FR
C316
1V8_CAM
1u
C312
0.1u
VBAT
0.1u
C311
52
53
54
6
7
8
9
VA302
38
39
4
40
41
42
43
44
45
46
47
48
49
5
50
51
23
24
25
26
27
28
29
3
30
31
32
33
34
35
36
37
1
10
11
12
13
14
15
16
17
18
19
2
20
21
22
CN301
0.1u
C313
INOUT_A3
INOUT_A4
4
9
INOUT_B1
INOUT_B2
8
7
INOUT_B3
6
INOUT_B4
EVRC14S03Q030100R
FL303
5
G1
10
G2
INOUT_A1
1
2
INOUT_A2
3
ICVE10184E050R101FR
FL304
5
G1
10
G2
INOUT_A1
1
2
INOUT_A2
3
INOUT_A3
INOUT_A4
4
9
INOUT_B1
INOUT_B2
8
7
INOUT_B3
6
INOUT_B4
varistor
VA300
V_EXTH
G1
5
G2
10
1
INOUT_A1
INOUT_A2
2
INOUT_A3
3
4
INOUT_A4
INOUT_B1
9
8
INOUT_B2
INOUT_B3
7
INOUT_B4
6
FL300
ICVE10184E050R101FR
VA303
5
G1
10
G2
INOUT_A1
1
2
INOUT_A2
3
INOUT_A3
INOUT_A4
4
9
INOUT_B1
INOUT_B2
8
INOUT_B3
7
6
INOUT_B4
EVRC14S03Q030100R
FL305
V_IO
C314
1000p
IND_LED_R
CAM_PWDN
MLED2
EAR_P
IND_LED_B
SPK_P
LCD_RESET
MOTOR_P
I2C_SDA
EAR_N
VRWLED
MLED1
SPK_N
I2C_SCL
CAM_MCLK
CAM_PCLK
CAM_HS
CAM_VS
_LCD_SUB_CS
CAM_D(3)
CAM_D(2)
CAM_D(1)
CAM_D(0)
LCD_D(0:7)
LCD_D(0)
LCD_ADS
CAM_D(0:7)
CAM_D(7)
CAM_D(6)
CAM_D(5)
CAM_D(4)
CAM_RESET
_LCD_WR
LCD_ID
_LCD_MAIN_CS
LCD_D(7)
LCD_D(6)
LCD_D(5)
LCD_D(4)
LCD_D(3)
LCD_D(2)
LCD_D(1)
CIRCUIT
CN301
FPCB
MAIN PCB