Melody Not Ringing - Pantech G310 Service Manual

G310 Service Manual

6.2.6 Melody not ringing

1. Check to see if U105.32, 7 is 2.8V : CP133
2. Check to see if U105.15 is Vbat : CP134
3.Check U105.12, 13, and 14 pin for waveform : CP135
NO Check that C163, R120, C164, R121 and R122 cold solder, broken, short to the other
PCB pattern or not
If you find out any defect, you replace it
4. Check SPK. SPOUT1 and SPOUT2 for waveform : CP136
NO Replacd SPK
40
PANTECH
CP133
CP134
CP136
CP135
CP134
CP136
CP135
CP133
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