Audio Failure: Downlink (Earphone) Is Broken; Figure 16: Fault Finding For Broken Downlink With Working Uplink - Nokia NSB-5 Series Troubleshooting Instructions

NSB-5
Troubleshooting Instructions

Audio failure: Downlink (earphone) is broken

Downlink broken
Voltage on C203 & C204 is
1.4VDC
during call
Audio signal on C203 & C204
during call when speaker should
emit sound
Is connector on
Display assy OK?
Check display module and
speaker

Figure 16: Fault Finding for Broken Downlink with Working Uplink

Page 22
Yes
Yes
Yes
Nokia Mobile Phones Ltd.
PAMS Technical Documentation
No
Check R202, C203, C204,
C404, C405, X400 and
N200
No
Check N200 & D300
No
Repair or new module
Issue 1 03/01