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CCS Technical Documentation
Troubleshooting Instructions
NSB-9
Issue 1 04/03
Nokia Corporation
Page 71
Display
faults 2
Does the display
start?
Measure
VDD (2.78V) and
VDDI (1.8V).
Are they OK?
Measure XRES,
XCS, SI. Are
voltage levels
~1.8V?
Try to chance the
display module. Is it
working now?
Check C305, C306
and lines. If OK,
change UEM.
Check X300 and
lines.
If OK, change UPP.
Check X300
Retest
END
Yes
Yes
Yes
Yes
No
No
No
No
Содержание NSB-9
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