User Guide

Issue 1 04/2005 COMPANY CONFIDENTIAL 25
Copyright © 2005 Nokia. All Rights Reserved.
RM-94
6(a) - Baseband Troubleshooting Instructions Nokia Customer Care
■ Keypad faults 2
Display
faults
Measure
SLEEPX signal
from J2801 when key is
pressed.
Is it 1.8V?
When
keypad is pressed,
the LEDs are turned
on?
No
No
Yes
No
Yes
Check lines. If still
failing change UPP.
Check lines. If still
failing change UPP.
Are keys working?
Keypad
faults
2
Retest
END
Yes