Usb Fault - Nokia 7600 Troubleshooting Manual

NMM-3
6-Troubleshooting

USB Fault

Start
Connect a USB device
to phone and check
N401 Vpu goes to 3.3V.
Yes
Is there any
activity on
D+ and D-?
No
Check R423, R424,
R410, R413 and
X410. OK?
No
Replace
defective part.
Page 6-16
Company Confidential
Check VCC
No
for ~5V
Yes
Yes
Yes
Replace N401.
OK?
Yes
End
Copyright  2003 Nokia Corporation
Company Confidential
CCS Technical Documentation
Check R442, L411,
C414 and X401.
No
Replace if defective.
Replace
No
TIKU
Issue 1 (11/2003)