Lcd Display Trouble - LG GD510 Service Manual

GD510 Operational Description

5.4 LCD display trouble

Check Points
-LCD assembly status ( LCD FPCB, Connector on FPCB)
-EMI filter soldering
-Connector combination
EVRC14S03Q030100R FL506
9
DIF_D0
INOUT_B1 INOUT_A1
8
DIF_D1
INOUT_B2 INOUT_A2
7
DIF_D2
INOUT_B3 INOUT_A3
6
DIF_D3
INOUT_B4 INOUT_A4
DIF_D4
INOUT_A4 INOUT_B4
4
DIF_D5
INOUT_A3 INOUT_B3
3
DIF_D6
INOUT_A2 INOUT_B2
2
DIF_D7
INOUT_A1 INOUT_B1
1
FL501 EVRC14S03Q030100R
Check signal
flow via EMI filter
FL502
FL501
FL506
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LG Electronics
Only for training and service purposes
VFM_2V9
1
2
3
4
6
7
8
C510
9
1u
GB042-40S-H10-E3000
LCD Connector
CN503
40 1
39 2
TP501
38 3
LCD_ID
TP
37 4
MLED
36 5
MLED1
35 6
MLED2
34 7
MLED3
33 8
MLED4
32 9
MLED5
31 10
MLED6
30 11
IF_MODE1
29 12
28 13
27 14
DIF_RESET
26 15
25 16
24 17
DIF_VSYNC
23 18
TP502
22 19
IF_MODE0
TP
21 20
VA502
EVLC14S02050
ENBY0036001
GB042-40S-H10-E3000
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5. Trouble shooting
Revision A
EVRC14S03Q030100R
1 9
INOUT_A1 INOUT_B1
2 8
INOUT_A2 INOUT_B2
3 7
INOUT_A3 INOUT_B3
4 6
INOUT_A4 INOUT_B4
FL502
Check the connection LCD FPCB
Connector
Charge Pump
LGE Internal Use Only
LGE Property
DIF_CD
DIF_CS
DIF_RD
DIF_WR