LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 70 -
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
MAIN TO LCD CONNECTOR
2V9_VFM
VBAT
2V11_RTC
INOUT_B1
9
8
INOUT_B2
INOUT_B3
7
6
INOUT_B4
ICVE10184E150R101FR
FL302
5
G1
10
G2
1
INOUT_A1
INOUT_A2
2
3
INOUT_A3
INOUT_A4
4
VA310
ICVN0505X150FR
1u
C317
1
2
INOUT_A2
INOUT_A3
3
4
INOUT_A4
9
INOUT_B1
INOUT_B2
8
7
INOUT_B3
INOUT_B4
6
FL304
ICVE10184E150R101FR
G1
5
G2
10
INOUT_A1
6
7
8
9
5
29
3
30
4
14
15
16
17
18
19
2
20
21
22
23
24
25
26
27
28
CN30
GB042-60S-
1
10
11
12
13
5
G1
10
G2
1
INOUT_A1
INOUT_A2
2
INOUT_A3
3
INOUT_A4
4
INOUT_B1
9
8
INOUT_B2
INOUT_B3
7
6
INOUT_B4
ICVE10184E150R101FR
FL306
C318
1u
ICVN0505X150FR
VA309
AUDIO_IN
_DIF_RESET
LCD_ID
DIF_VSYNC
VIB_EN
_LED_RESET
LED_CNT
DIF_D3
DIF_D2
DIF_D1
DIF_D0
DIF_D7
DIF_D6
DIF_D5
DIF_D4
DIF_CD
DIF_MAIN_CS
DIF_RD
_DIF_WR
LCD CONNECTOR
10K
R106
1u
C119
2V9_VFM
5
6
7
8
9
23
24
25
26
27
28
29
3
30
31
32
33
34
35
4
1
10
11
12
13
14
15
16
17
18
19
2
20
21
22
CN104
GF032-35S-E2000
2V9_VFM
_DIF_RESET
DIF_MAIN_CS
DIF_CD
DIF_VSYNC
MLED5
MLED3
MLED2
MLED4
MLED1
MLED
DIF_RD
DIF_D0
DIF_D1
DIF_D2
DIF_D3
DIF_D4
DIF_D5
DIF_D6
DIF_D7
_DIF_WR
LCD_ID
Содержание KF350
Страница 1: ...Service Manual Model KF350 Service Manual KF350 Date October 2008 Issue 1 0 Internal Use Only ...
Страница 127: ... 128 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 174: ...Note ...
Страница 175: ...Note ...