Keyboard Faults 1 - Nokia NPL-4 Series Troubleshooting Instructions

Nokia Customer Care

Keyboard faults 1

Keyboard
faults
Is the powerkey
working?
Yes
Keyboard
faults
2
Copyright © 2005 Nokia Corporation. All rights reserved.
Issue 2 05/05
Company confidential
Measure voltage
No from S302.
Is it HIGH?
Yes
Measure voltage
from S302 when powerkey is
pressed.
Is it HIGH ?
Yes
Check S302.
Is it OK ?
Yes
Phone is
dead
Troubleshooting Instructions
Check R306,
C310, S302 and
No
POWERONX line.
If OK change UEMEk
Phone is
No
jammed
No Change S302
NPL-4/5/
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