CCS Technical Documentation
Baseband Troubleshooting Instructions
Issue 1 10/02
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Nokia Corporation
Page 53
Display
faults 3
Does the display start?
Change UI module.
Is it working now?
No
Retest
Yes
Measure
VDD (2.78 V) and
VDDI (1.8 V).
Are they OK?
Check C303
and lines.
If OK ->
change UEM.
No
Measure
VOUT voltage.
Is it ~ 8.1 V?
Yes
Check C302,
X300, and lines.
No
Measure
XRES and XCS.
Are they ~ 1.8 V?
Yes
Check X300
and lines.
If OK ->
change UPP.
No
END
Yes
Yes
Check X300
No