LG FLATRON L2320A - NO RASTER ON AV SIGNAL; NO RASTER ON TV SIGNAL

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Copyright 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
NO RASTER ON AV SIGNAL
(CVBS, S-VIDEO, DVD Y/Pb/Pr)
Repeat
‘A’ Process
Fail
Pass
Pass
Pass
Pass
Check
Digital Switch for AV
(Main B’d : U16)
Check
U601(VPC3230D)
*In/Out H/V Sync
*Output Data
*Input Signal
Resoldering
Or Replace
Device
Fail
* Check the Power
(5VA, 3.3VDD)
* Replace Device
NO RASTER ON TV SIGNAL
Check
The connection
Between AV B’d
And Tuner B’d
Fail
High
Pass
Pass
Check
Power(AV B’d)
*L702(5V)
*D802(33V)
Check
Tuner Output
*L701(TV-VIF)
Replace Device
. Main B’d:
U201, U9
Low
Replace Device
. Main B’d: U9
. AV B’d: U702
Fail
* Check Connector
* Check Ctrl Signal
(INVT-CTL/LCM-CTL
/LCM-PWR
)
Fail
Check
U302(FLI2310)
*S2310-RESET
*In/Out H/V Sync
*Output Data
* Check the Power
:U303, U304
* Replace Device
Check the Input Jack and Cable