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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. TROUBLE SHOOTING
5.4 LCD display trouble
Check Points
-LCD assembly status ( LCD FPCB, Connector on FPCB)
-EMI filter soldering
-Connector combination
Charge Pump
Check signal flow via EMI
filter
Check the connection LCD FPCB
Connector
1uF
C105
2V9_VFM
CN101
04-6293-037-001-829
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
TP105
MLED5
MLED4
MLED3
MLED2
MLED1
MLED
_DIF_RESET
LCD_ID
DIF_VSYNC
DIF_CD
DIF_MAIN_CS
DIF_RD
_DIF_WR
DIF_D4
DIF_D7
DIF_D6
DIF_D1
DIF_D5
DIF_D0
DIF_D3
DIF_D2
LCD_IF1
LCD_IF2
RENESAS HIMAX
LCD_IF2 (PIN4) L H
LCD_ID (PIN27) H L
LCD_IF1 (PIN3) H H
0
0
3
A
V
R
F
0
5
1
X
5
0
5
0
N
V
CI
FL300
ICVE10184E150R101FR
0
1
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
0
1
3
Cu
1
R
F
0
5
1
X
5
0
5
0
N
V
CI
1
0
3
A
V
VBAT
ICVE10184E150R101FR
FL302
0
1
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
CN301
GB042-60S-H10-E300
31
30
32
29
33
28
34
27
35
26
36
25
37
24
38
23
39
22
40
21
41
20
42
19
43
18
44
17
45
16
46
15
47
14
48
13
49
12
50
11
51
10
52
9
53
8
54
7
55
6
56
5
57
4
58
3
59
2
60
1
U
1
5
1
3
C
2V9_VFM
2V11_RTC
ICVE10184E150R101FR
FL306
0
1
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
LED_INT
LED_CNT
_LED_RESET
VIB_EN
LCD_ID
DIF_VSYNC
_DIF_WR
_DIF_RESET
DIF_D7
DIF_D6
DIF_D5
DIF_D4
DIF_D2
DIF_D1
DIF_D0
DIF_MAIN_CS
DIF_CD
DIF_RD
DIF_D3
LCD_BACKLIGHT_EN
LCD_IF1
LCD_IF2