I908 Mobile Phone Maintenance Manual
3.2.2 No ringing sound
Identify the SPK that makes no
sound.
connection or replace the speaker.
Try again to see if it functions
N
No
ringing
Y
Check
the
speaker
N
Check whether U1205,
U1206
and
U1207
function normally
N
Replace U1206
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LENOVO
OK
Y
OK