Nokia 3390, 3390b, 3395 Manuales De Servicio
NPB-1NB
Baseband Troubleshooting
PAMS Technical Documentation
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Earpiece doesn’t work
and there aren’t any
electrical or mechanical
problems
Check R119, R120, C122,
C105, C125, C104, C126,
Replace COBBA
(N100)
OK
OK
Microphone doesn’t work
and there aren’t any
electrical or mechanical
problems.
C115 towards R115 (bias)
= 2,1V
Check mic-line to
COBBA :
L402, C403, C407,
C120, R111.
OK
Yes
Check R115, V101,
C123, C113.
Replace COBBA
(N100)
No