Accessory Faults1 - Nokia NPL-4 Series Troubleshooting Instructions

NPL-4/5/RM-104
Troubleshooting Instructions

Accessory faults1

Accesory if
faults
Non-ACI
accessory detected and
working?
Yes
Accessory if
fault
2
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Insert mono
No headset
(HDB-4)
Check ACI line
trans.HIGH to LOW
(<0.6V) ?
Yes
Remove
headset
Check ACI line
trans. LOW to HIGH. Is
it OK ?
Yes
Audio OK ? No
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Check PopPort
connecor pin
3(ACI) and line to
systemboard,
No
L106,R103,R102,
R109, C103. If OK
change UEMEk.
Retest.
Check PopPort
connecor pin
3(ACI) and line to
systemboard,
No
L106,R103, R102,
R109, C103. If OK
change UEMEk.
Retest
Check C107,
C108, L103, C114,
C119, R105, R106,
R164, R165, C157
Audio fault
Issue 2 05/05