Nokia 6610 - Cell Phone 625 KB, Service Manual

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CCS Technical Documentation Troubleshooting Instructions
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Start
Is accessory detected
when connected to
system connector?
Check system
connector X101
(solder ings, contact
plates). Is it OK?
Measure VOUT
voltage (pin4).
Is it ~2.8V?
Check VOUT-line (N100, L107, R103, C101,
C102, C112).
If not OK, change defect part and retest.
End
No
No
Repair solderings or check contact
plates if dirty. Retest.
No
Retest
Measure ACI-line
(pin3).
Is it ~0.83...1.13V?
Check ACI- line (L106,R103,R102,R109,C103).
If not OK, change defect part and retest.
No
Yes
Yes
Yes
ACI-Accessory
Non-ACI Accessory
Measure VOUT
voltage (pin4).
Is it ~0V?
Check that regulator N100 enable-pin is
LOW-state.
If not OK, check ACI-line again
No
Retest
Measure ACI-line
(pin3).
Is it ~0V?
Check ACI- line (L106,R103,R102,R109,C103).
If not OK, change defect part and retest.
No
Yes
Yes
Yes