LG 32LG500H Service Manual page 20

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) Procedure check
Does minute discharge
At Module?
Yes
Is the LVDS
cable normal?
Yes
Is the IC506 (FLI8662)
Output normal?
Yes
Is the LED change when
Push remote-control?
3. In case of occurring strange screen into specific mode
(1) Symptom
The screen does not become the display from specific input mode.
(RF, AV, Component, RGB, DVI).
(2) Check following
- Check the all input mode should become normality display.
- Check the Video(Main)/Data(Sub), Video(Main)/Video(Sub) should become normality display from the PIP mode or DW mode.
(Re-Check it Swap)
(3) In case of becomes unusual display from RF mode
Is normal the Tuner?
Yes
Is normal the
FIL8662?
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Only for training and service purposes
No
Is the IC1111 output
normal?
YES
Check the LCD Module
No
Reconnect the LVDS
cable in P600.
No
Replace the main
board
No
Replace the IR board
Check the tuner cable.
No
* Isn't cable has broken?
* Is the cable connected
well from MPI card to tuner?
No
Cable inserts well.
No
Is normal the Input voltage, IIC
Communication and HV sync?
NO
Is output the normality
Low/High voltage except
stand-by 5V?
Yes
Is normal the Input voltage, IIC
Communication and CVBS output?
No
- 20 -
NO
Replace the
Power board.
No
Replace Tuner
Replace IC or Main Board
LGE Internal Use Only