User Guide

CC Technical Documentation Troubleshooting - Baseband
RM-11
Issue 1 02/2004 ©2004 Nokia Corporation Confidential Page 55
Keypad Faults
Power Key
Keypad
faults
Keypad
faults,
page 2
Measure voltage at
R306. Is it high?
Is the power key
working?
Check S302, C310,
and R306. If OK,
change UEM
Measure voltage at
R306 when power
key is pressed. Is it
low?
Retest
NO NO
YES
YES
NO
YES
Change S302