Keypad Faults; Power Key - Nokia RH-27 Series Technical Documentation Manual

CCS Technical Documentation

Keypad faults

Power key

Keypad
faults
Is the power key
working?
YES
Keypad
faults,
page 2
Issue 1 11/2003 Confidential
Measure voltage at
NO
R306. Is it high?
YES
Measure voltage at
R306 when power
key is pressed. Is it
low?
NO
©2003 Nokia Corporation
Troubleshooting - Baseband
Check S302, C310,
and R306. If OK,
NO
change UEM
Retest
YES
Change S302
RH-27
Page 53