Audio Fault 3 - Nokia NHM-7 Series Troubleshooting Manual
Hide thumbs
Also See for NHM-7 Series:
- Service manual (212 pages) ,
- Troubleshooting instructions (40 pages) ,
- Disassembly instructions manual (8 pages)
Table of Contents
Advertisement
NHM-7
Troubleshooting and Tuning Instructions
Audio fault 3
Audio
faults 3
Is BUZZER working?
Yes
END
3DJH
Measure VBATT
No
voltage from B301.
Is it OK?
Set phone in LOCAL mode.
Use Phoenix Audio Test.
Set Buzzer volume ON.
Measure Buzzer
control signal
from BUZZER (C307).
Is it 1kHz pulses ?
Check C306,
C307, C308
and line.
IF OK –>
Change UEM
1RNLD &RUSRUDWLRQ
PAMS Technical Documentation
No
Yes
Yes
No
Check VBATT
line
Change
BUZZER
(B301)
,VVXH
Advertisement
Table of Contents
Troubleshooting
