LG LG-A270 - LCD Trouble

4. TROUBLE SHOOTING
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Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Copyright © 2012 LG Electronics. Inc. All right reserved.
O nly for training and service purposes
LGE Internal Use Only
TP1
TP2
TP
3
57
4. TROUBLE SHOOTING
4.8 LCD Trouble
CN400
TP1
Figure 4.8.2
TP2
R499
R497
R496
R498
R495
Figure 4.8.3
Figure 4.8.1
4.8 LCD Trouble
Figure 4.8.3
CN400
14
12
11
10
9
8
7
6
5
4
3
2
1
13
C403
27p
C402
27p
VBAT
100ohmsR496
C401
27p
C404
27p
R499 100ohms
R498 100ohms
R495 100ohms
C405
27p
VIO28
C400
1u
100ohmsR497
R1 120K
LSA0
LSCE0B_R
LSDA_R
LSCK
LRSTB_R
LCD_MAKER_ID
LCD_BL_1
TP3
TP2
TP1
TP2
R499
R497
R496
R498
R495
Figure 4.8.2
Figure 4.8.1