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RM-12
USB Problems (1)
Start with
phone with battery.
Connect the phone to
PC via USB with known
good DKU2 cable
PC recognizes
the phone as USB
device
No
Connect a service battery to phone.
Check that the startup mode
selection is NORMAL. Connect to
PC with service battery USB plug,
inspect also production test pattern
(where the service battery
connects) for damage/litter
PC recognizes
the phone as
USB device
No
Page 93
Customer's cable
Yes
broken, end
Inspect system
connector X2021
Yes
visually and check
solder joints
Undamaged
Goto USB
troubleshooting
page 2
Copyright ©Nokia. All rights reserved
Nokia Customer Care
Replace damaged
connector or re-
Damaged
solder broken
connections
PC recognizes
the phone as USB
device
No
Yes
End
Issue 1 11/2004
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Table of Contents
Troubleshooting
