Picture Errors; High-Light Chroma In White Or Black - NEC MultiSync LCD2080UX -BKA Service Manual

3. Picture Errors

3.1 High-Light Chroma in White or Black

Use AUTO ADJUST of CONTRAST in the service mode.
NG
Use AUTO ADJUST after "SERVICE RESET" in the
service mode.
NG
Is the RGB input maintained at 0.7Vp-p in RA04, RA03,
and RA05?
OK
Is the Video signal input maintained at 0.7Vp-p at ICA01
pins 5, 13 and 20?
NG
Check peripheral circuits of ICA70A.
Adjust the input on the signal side to 0.7Vp-p again.
NG
Then, use AUTO ADJUST in the service mode again.
6-6
Normal
Normal
NG
OK
Normal