LG CE500 Service Manual page 40

START
Power is supplied to
the board?
Yes
Connection between
FPCB and boards is OK?
Yes
CN401 or CN3 is soldered well?
Yes
Paths of LCD control
signals are OK?
LCD Module is out of order.
No Refer to
Power On Trouble
No
Reconnect FPCB
No
Re-solder the CN401
or CN3
No
Re-solder
the EMI filter
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4. TROUBLE SHOOTING
Change the LCD Module.
Yes
After changing the board,
LCD Display is OK?
Yes
Connection between
FPCB LCD Module is OK?
Yes
FPCB is OK?
Yes
No The board is broken.
Change the board.
Resolder
No
The CN3
No
Replace the FPCB