Nokia NPM-6 Series Troubleshooting Instructions page 33

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