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LGE Internal Use Only
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
GS290 Operational Description Revision B
LG Electronics
69/136
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
ICVE10184E150R101FR FL400
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
TP400
R400 DNI
ICVE10184E150R101FR
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
VA402
EVLC14S02050
TP408
TP409
TP410
VFM_2V9
ICVE10184E150R101FR
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
TP411
TP412
C420
1u
TP413
VFM_2V9
CN402
GB042-40S-H10-E3000
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
TP414
IF_MODE
LCD_ID
DIF_VSYNC
DIF_WR
DIF_RESET
DIF_D7
DIF_D6
DIF_D5
DIF_D4
DIF_D3
DIF_D2
DIF_D1
DIF_D0
DIF_CS
DIF_CD
DIF_RD
MLED
MLED5
MLED4
MLED3
MLED2
MLED1
LCD Connector
L
H
Maker ID
H
L
IF
Pin11 : IF_MODE(IF1)
Pin18 : OPEN(OTP)
SHARP
LGIT
Maker
LCD Interface Mode
Pin19 : IF_MODE(IF0)
Pin2 : LCD_VSYNC_I
Pin3 : MAKER_ID