LG F1200 Service Manual page 42

START
Power is supplied to the board?
Yes
Connection between FPCB
and board is OK?
Yes
CN400 is soldered well?
Yes
Paths of LCD control signals are OK?
Yes
FPCB is OK?
Yes
Connection between FPCB
and LCD Module is OK?
Yes
After changing the board,
LCD Display is OK?
LCD Module is out of order.
Change the LCD Module.
(Trouble Shooting Procedure Flow Chart)
No
No
No
No
No
No
No
- 41 -
4. TROUBLE SHOOTING
Refer to Power On
trouble
Reconnect FPCB
Resolder the CN400
Resolder the FL400
Replace the FPCB
Resolder the
connector of LCD
Module
The board is broken.
Change the board.