User Guide

RH-37
6(a) - BB Troubleshooting Instructions Nokia Customer Care
Page 26 Nokia Corporation Issue 1 07/04
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