LG L240 Service Manual page 73

4. TROUBLE SHOOTING
4.9.2 Folder Trouble (ON/OFF)
START
The all paths connected
to U502 are OK?
YES
Is the VREXTH a 2.8V?
Is the VRIO a 1.8V?
YES
Folder signal is low on
Magnetizing into U502?
YES
Folder_2 signal is low on
Magnetizing into U502?
YES
The DBB(U102) is broken.
Change the board.
- 74 -
NO
Resolder the
R537,C503,C504,R44
4
NO
Refer to Power ON
Trouble
NO
Replace the U502.
The U502 is broken
NO
Replace the U408
The U408 is broken.