User Guide

CCS Technical Documentation
NHM-4
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Display troubleshooting 3
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Display
faults 3
Does the display start ?
Display module
Is it working now ?
No
Retest
Yes
Measure
VDD (2.78V) and
VDDI (1.8V) from
Is it OK?
Check C303
and solders
If OK,
No
Measure
VOUT voltage.
Is it ~8.1V?
Yes
Check C330
X300 and
No
Measure
XRES, XCS.
Is it ~1.8 V?
Yes
Check X300
and lines.
If OK, change
UPP
No
END
Yes
Yes
Check X300
No
Try change
X300
Change LA4
lines to X300
are broken
module
lines