Nokia 6255 サービスマニュアル
Nokia Customer Care
Baseband Description and Troubleshooting
6255/6255i6256/6256i (RM-19)
Issue 2 05/2005
©2005 Nokia Corporation Company Confidential
Page 61
Main
Display
faults,
page 2
Does the Display
show an image?
Try changing
display module.
Is it OK?
Retest
Measure VIO and
VFLASH1. Is it
OK?
Check LCD signals
LCDCSX, LCDCLK,
LCDCSX, LCDCLK,
LCDDA, and XRES. Are
the signals OK? (Refer
to the display section.)
to the display section.)
Change UPP
Change Display
END
YES
NO
YES
NO
NO
YES
Change UEM
NO