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NHM-2/5nx,ny/6/9
Troubleshooting
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Headset microphone doesn't
work and there are no
mechanical problems
R203 towards C205 is high when
the headset plug is inserted.
R105 (XMICN line) towards
COBBA (N100)
= 2,1V
Check XMIC line to COBBA
(N100) : L400, R105, C100,
R102, C110
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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.
Headset earpiece doesn't
work and there are no
mechanical problems
Check L401, R109, C101, C107.
Replace COBBA (N100).
No
Yes
No
Yes
OK
1RNLD &RUSRUDWLRQ
PAMS Technical Documentation
No
Yes
OK
OK
Check X200
Check R105, R100, R101, V100
Replace COBBA (N100)
Check R115, V101,
C123, C113.
Replace COBBA
(N100)
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