LG 32LC5DC Service Manual page 19

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) Procedure check
Does minute discharge
At Module?
Yes
Is the LVDC cable
normal?
Yes
Is the IC506(FLI8662)
Output normal?
Yes
Is the LED change when
Push remote contol?
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 the Tuner normal?
Yes
Is the FIL8662
normal?
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 wellfrom
MPI card to tuner?
Cable inserts well.
No
Is the Input voltage, IIC Communication
and HV sync normal?
NO
Is output the normality
Low/High voltage except
Stand-by 5V?
Yes
No
No
- 19 -
NO
Is the Input voltage, IIC Communication
and CVBS output normal?
No
Replace the Tuner
Replace the IC or Main Board.
Replace the Power
board.