Folder On/Off Trouble - LG U8210 Service Manual

4. TROUBLE SHOOTING

4.18 Folder ON/OFF Trouble

Folder On/Off is worked as below :
Folder On/Off Event → Flip(U604 pin 2) is triggered(On : about 2.1V, Off : 0V) → MSM6250 Sense the
Folder Event
Start
Check t he magnet in
folder Assy
Yes
Appr oach the magnet to
U604
FLIP(U604 pin 2) is 0V?
Yes
Change the Main b'd
NO
Insert the mag net
NO
Check t he U604
higher t han 2.6V
Yes
Work w ell?
Yes
Check CN300,CO N504
Change the Main b'd
- 120 -
NO
Change the Key Pcb