User Guide

CCS Technical Documentation Troubleshooting Instructions
Issue 1 01/03 ãNokia Corporation. Page 33
Display faults
2
Does the display start ?
Try to change
UI -module. Is it
working now ?
Check signals
RESX/J306,
SDA/J305,SCLK/J307,
CSX/J304.
Is it OK ?
Board to boad
connector fault in
display module or faulty
module.
Retest
Check lines of
VFLASH1 and VIO. If
lines are OK change
UEM
Check lines of display
control. If OK change
UPP
Change X302
Measure VDDI/J301
(2.78V) and VDD/J300
(1.8V).Are
they OK ?
No Yes
No
No
END
Yes
No
No