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2. No Raster
(1) Symptom
1) No OSD and image occur at screen.
2) It maintains the condition where the front LED is green.
(2) Check process
Does
minute discharge
at Module?
Yes
Is the link cable
normal?
Yes
Is the IC801's
output normal?
3. Unusual display from RF mode
Is
video output of the
Tuner normal? (Check
TU500_Pin13)
Yes
Block A
Is the LVDS
Cable connected?
well
Yes
Change the IC(IC801)
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Only for training and service purposes
No
Is the inverter
/ VaVs on?
Yes
Check the LCD Module
No
Reconnect Panel line cable.
(HD : P403, FHD : P402)
No
Replace the VSC.
Is the
No
input voltage
normal?(Check
Pin3)
Check the power.
No
Cable inserts well.
Is output the normality
No
Low/High voltage except
Stand-by 5V?
Yes
Is the I2C communication normal?
(Check Pin9, Pin10)
No
- 15 -
No
Check the Tuner.
LGE Internal Use Only
Replace the
Power board.
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