LG GD330 - LCD Display Trouble Shooting

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LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
4.5. LCD Display Trouble shooting
• LCD Control signals from Main Board
- The signal of DBB is ELCD_DATA(16BIT), LCD_CS/WR/AD
- LCD MODULE POWER SOURCE and LCD reset.
•Check Point
- The Assembly status of the LCD Module
- The Soldering of connector
- The FPCB which connects the LCD Module
• Trouble Shooting Setup
- Connect PIF Jig, and Power on
B
RT
S
E
_
D
CLE
0
2
D
4
1M
0
S
C
N
_
DC
L
E
TESERN_
D
CL
E
5
1M
5
1K
WNR
_
D
C
L
E
ET
_
D
C
L
E
41K
81
J
11_A
TA
D_
D
CLE
21
_
A
T
A
D_
DC
L
E
12J
9
1J
31_A
TA
D_
D
CLE
12K
41_A
TA
D
_
DC
LE
8
1N
51_
A
T
AD_D
CL
E
61_A
T
A
D
_D
CL
E
8
1R
1
2
V
7
1
_
A
TAD
_DCL
E
91
E
2
_A
TA
D
_
D
CLE
3
_A
T
A
D
_
DC
L
E
81
G
4
_A
TAD_DC
LE
02
F
81H
5_A
T
AD_
DC
L
E
6
_A
TA
D_
DCLE
91
G
02H
7_A
T
A
D_
D
CL
E
8
_
A
TA
D_
DC
L
E
9
1
H
1
2
H
9
_
A
TAD_
DC
L
E
CN
D
_
DCLE
5
1L
12
D
0
_ATAD
_
D
CLE
1
_
A
TA
D_
DC
LE
81
F
0
1_
A
TAD_
DC
L
E
02J
TC
ETE
D
_
TH
G
I
L
CN
Y
SV
_
DCL
)
0
:
51
(D
_L
)8(D_
L
)
9(D_L
SD
A
_DCL
DR
_D
C
L
_
S
C
_
DC
L
_
T
E
SER
_D
CL_
R
W_DCL
_
)0(D
_
L
)
1(D_L
)01(D
_
L
)
1
1(D_L
)2
1(D
_
L
)
31(
D_L
)4
1(
D
_
L
)
5
1(
D_
L
N
E
_
G
HC_
)2(D_L
)
3(
D_L
)4(
D_L
)
5(
D
_L
)6(
D
_L
)
7(D_
L