Audio Faults - Nokia 6310i Service Manual

PAMS Technical Documentation

Audio faults

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Earpiece doesn't work
and there isn't any
mechanical problem
Replace Earpiece
Ok
Check R171 (and
Check L158, R171 (and
C150 and R156 for
Shortcircuit)
Ok
UEM FAILURE (D200)
Headset microphone doesn't work
R162 towards UEM (bias) = 2.1V
R163 towards miclines (bias) = 0.8-
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and there isn't any
mechanical problem
Ok
Yes
1.4 V
Yes
Check XMIC line to UEM:
L168, R167, C168, C167, C166,
C165, R166, C164, R165
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Microphone doesn't work
and there isn't any
mechanical problem
Replace Microphone
Ok
Ok
R150 towards UEM (bias) = 2.1V
Yes
R151 towards miclines (bias) = 1.0-
1.4 V
Yes
Check MIC line to UEM:
L155, R153,C156, C155, R151,
C154, R152
No
UEM FAILURE (D200)
Check R162, R163,
No
V151, C160, C162,
C161
Ok
UEM FAILURE (D200)
NPL-1
6 - Troubleshooting
No
UEM FAILURE (D200)
Check R150, R151,
No
V158, C151, C153,
C152
Ok
UEM FAILURE (D200)
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