Hook Switch Not Working - Pantech GB210 Service Manual

GB210 Service Manual

6.2.4 Hook Switch not working

1. Check to see if U113.5 pin is 2.8V : CP129
2. Check to see if U113.1 pin is around 0.12V during pressing Hook Switch : CP130
3. Check to see if U113.3 pin is around 0.21V : CP131
NO Check that R156 and R157 cold solder, broken, short to the other PCB pattern or not
If you find out any defect, you replace it
4. Check to see if U113.4 pin is around 0V, when you press Hook Switch : CP132
NO Check that U113 cold solder, broken, short to the other PCB pattern or not
If you find out any defect, you replace it
35
PANTECH
CP131
CP129
CP130
CP132
R&D CONFIDENTIAL