LG FLATRON L2320A - NO RASTER STATE

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Copyright 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
2. NO RASTER STATE
Check
U12(AD9888)
.MHS
.MVS
.MCLK
.DATA
NO RASTER ON ANALOG
SIGNAL
Replace Device
Main B’d : U9
AV B’d : U702
Check
Power Line
(U13)
Check LED
Status on
Display Head
Check
Ctrl signal
U9(Sil160) Pin#26
(TMDSTX-PDN)
Blue
3.3V
LOW
Replace Device
Main B’d
: U201,U9
Replace the
U201(Scaler)
Find a
Soldering Error
or check the
oscillator(X6)
*Check the DTV Jack
Connection
- Y/Pb/Pr Jack check
*Check the other Device
- U26,U27(SDRAM)
- U2,U17(TMDS Receiver)
Check
Scaler(U201)
Output
. LHSYNC
. LVSYNC
. LCKA
. DATA
Fail
Fail
High
*Check Connector
*Check Ctrl Signal
(INVT-CTL/LCM-CTL
/LCM-PWR)
Check
Inverter or
LCD Module
Fail
Fail
Fail
Replace Device
Main B’d :U12
Amber
Pass
Pass
Pass
‘A’ Process