Nokia RH-6 Series Baseband Description & Troubleshooting page 69

CCS Technical Documentation
Touchpad module - softies
Continue
Are the TP
Module keys
working?
Continue
Issue 1 10/2003
Company Confidential
Change TP Module.
No Are the keys working
now?
No
Check X305 (solder
joints). Is it OK?
Yes
Measure ROW0 and
ROW1 lines from
X305. Are voltage
level ~ 1.8V?
Yes
Measure SLEEPX-
signal fom testpoint
J403 when key is
pressed.
Is voltage level ~
1.8V?
Yes
When keypad is
pressed, are the
LED's turned on?
No
Illumination
fault
© 2003 Nokia Corporation.
6 - BB Description & Troubleshooting
Retest failing
Yes
TP Module
No Change X305
No
Check lines ROW0
and ROW1 from
No X305. If OK, change
Z300. If still fails,
change UPP
RH-6
Page 69