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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
LG Electronics
67/115
LGE Property
4.4 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
10
4
C
p9
3
p7
2
20
4
C
p7
2
30
4
C
p9
3
50
4
C
p7
2
80
4
C
p7
2
90
4
C
p7
2
41
4
C
p7
2
51
4
C
p7
2
61
4
C
p7
2
71
4
C
25pF
ICVE10054E250R201FR
FL401
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
K0
1
50
4
R
GB042-40S-H10-E3000
ENBY0036001
CN403
21
20
22
19
23
18
24
17
25
16
26
15
27
14
28
13
29
12
30
11
31
10
32
9
33
8
34
7
35
6
36
5
37
4
38
3
39
2
40
1
25pF
ICVE10054E250R201FR
FL402
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
25pF
ICVE10054E250R201FR
FL403
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
VBAT
LCD_ID
DIF_VSYNC
DIF_D7
DIF_D6
DIF_D5
DIF_D4
DIF_D3
DIF_D2
DIF_D1
DIF_D0
DIF_CD
DIF_RD
DIF_CS
DIF_WR
DIF_RESET
KEY_COL3
2V62_VIO
RCV_SPK_N
KEY_ROW6
LCD_BACKLIGHT_EN
RCV_SPK_P
KEY_COL4
KEY_COL5
X-
Y-
X+
Y+
IF_MODE0
SLIDE_KEY_BL
Socket
MAIN To FPCB Connector
Содержание GT350
Страница 1: ...Service Manual Model GT350 Internal Use Only Service Manual GT350 Date May 2010 Issue 1 0 ...
Страница 117: ... 118 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 127: ... 128 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 131: ... 132 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 151: ... 152 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...