Nokia NPM-6 Series Troubleshooting Instructions page 35

CCS Technical Documentation
Display faults
2
Does the display start ?
Yes
END
Issue 2 06/03
Company confidential
Try to change
No UI -module. Is it
working now ?
Measure VDDI/J301
(2.78V) and VDD/J300
(1.8V).Are
they OK ?
Check signals
RESX/J306,
SDA/J305,SCLK/J307,
CSX/J304.
Is it OK ?
Change X302
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Troubleshooting Instructions
Yes
No
No
No
No
NPM-6/6X
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
Page 35