Melody Not Ringing - Pantech GB310 Service Manual

GB310 Service Manual

6.2.6 Melody not ringing

1. Check to see if C199, C172 is Vbat : CP121
2. Check to see if R197,C198 is 2.8 V : CP122
3.Check U104.12,13,14pin for waveform: CP123
NO Check that C175,R200,R202,C176and R201 cold solder, broken, short to the other
PCB pattern or not
Check U104,17,18pin SPOUT1,SPOUT2 for waveform : NO
1
PANTECH
replace SPK.
CP121
CP122
CP123
CP121
CP122
CP123