User Guide

Nokia Customer Care Baseband Description and Troubleshooting
6255/6255i6256/6256i (RM-19)
Issue 2 05/2005 ©2005 Nokia Corporation Company Confidential Page 65
EL Panel and Driver
EL Panel
and Driver
Faults
Is the keypad
backlight on?
Check
Tiku_GPIO(57). Is it
OK?
Check N2400. Is it
OK?
NO
Replace D2800
NO
Replace N2400
Is the root EL power
180Vpf-pk?
Check EL panel. Is it
OK?
YES
YES
NO
YES
EL Panel
OK
YES
NO
Replace EL panel
NO