No Sound From Ihf Or Headset - Nokia RM-4 Troubleshooting Instructions

CCS Technical Documentation

No sound from IHF or headset

Clean PWB and system
connector (replace if
defect)
Risk of decreased phone
performance if PWB
pads are corroded or
badly scratched. Reliable
repair might be
impossible.
18
Insert headset
(working reference)
Turn on radio and tune in
Clean/Replace
to a station (using menu
system connector
navigation). Increase
volume with navigation
No
Check system
connector switch
Yes
Check IHF pads on
Is there a
PWB and spring
malfunction or
contacts on IHF
dirt in the
switch?
No
Check PWB and
connector springs
on the system
connector
Yes
Dirty, dusty,
scratched or
corroded?
(working reference)
No
Go to "Headset
earpiece do not
work".
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Copyright © 2003 Nokia. All Rights Reserved.
Troubleshooting Instructions
START
key.
Yes
Sound in
headset?
Enable radio
through loudspeaker
No
Sound in
IHF?
speaker
Yes
Dirty, dusty,
Yes
scratched or
corroded?
No
Change IHF
speaker.
Distorted
sound?
Yes
Yes
Sound in
IHF?
No
Go to "Handsfree
speaker do not
work".
RM-4/RM-5
Clean PWB and IHF
speaker contact springs.
Risk of decreased phone
performance if PWB
pads are corroded or
badly scratched. Reliable
repair might be
impossible.
No
IHF OK
ISSUE 1 02/2004