Nokia 7600 - Accessory Fault

CCS Technical Documentation 6-Troubleshooting
Company Confidential NMM-3
Issue 1 (11/2003) Copyright  2003 Nokia Corporation Page 6-13
Company Confidential
Accessory Fault
Start
Check system
connector X401
contacts and solder
j
oints. OK?
Repair or replace
system connector.
No
ACI-Accessor
y
Non ACI-Accessor
y
Measure ACI line
(pin 3). Is it ~0V?
Look for activiy on
the ACI line on
initial accessory
connection.
Y
es
Check ACI line,
L4??, R429, R409.
If faulty, replace
defective part
and retest.
No No
Measure VOUT
(pin4) Is it ~2.8V?
Y
es
Check L4??
and R409.
OK?
No
Replace
defective part.
No
Replace
UEME D200.
Y
es
In a call, check
operation of
XEAR and XMIC
Y
es
Y
es
No XMICNo XEAR
Check L404, L403,
R415, C412 and
C413. OK?
Replace UEME
No
Y
es
Replace
defective part.
Check L405-L407,
C416-C419 and
R421. OK?
Replace UEME
Y
es
No
End
In a call, check
operation of XEAR
and XMIC.