Folder On/Off Trouble - LG L1150 Service Manual

4.10. Folder ON/OFF Trouble

V_IO
C403
A3212ELH
U401
Keypad Side
V_IO Power
• Folder Operation
– There is a magnet to detect the folder status, opened or closed.
– If a magnet is close to the hall-effect switch(U401), the voltage at pin 2 of U401 goes to 0V.
Otherwise, 2.8V.
– This Folder signal is delivered to DBB, and the status of folder is reported.
Block Diagram
R424
C404
Folder signal
4. TROUBLE SHOOTING
FOLDER
R428
Calypso
R427
FOLDER
_ defect
Component Side
• Folder Signal Status
- L : Close (Magnetized)
- H : Open (Not magnetized)
- 67 -
U102