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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 blue.
(2) Check process
Does minute discharge
at Module?
Yes
Is the link
cable normal?
Yes
Is the Q1104's
output normal?
3. Unusual display from TV/CATV mode
Is video
output of the Tuner
normal?(Check TU500
_Pin15)
Yes
Is the LVDS cable
connected well?
Yes
Change the IC(IC100).
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Only for training and service purposes
No
Is the inverter
/ VaVs on?
Yes
Check the LCD Module.
No
Reconnect Panel link cable.
(P401 or P406 or P401)
No
Replace the Q1104.
No
Is the input
voltage normal?
(Check Pin4)
No
Check the Power.
No
Cable inserts well.
BLOCK A
No
Is output the normality
Low/High voltage except
Stand-by 5V?
Yes
Is the I2C communication
Normal?(Check Pin10, Pin11)
Check the Tuner.
- 15 -
No
Replace the Power board.
No
LGE Internal Use Only
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