Troubleshooting - NEC XP21 - MultiSync - 21" CRT Display User Manual

Trouble Shooting
Trouble Shooting
Please check to be certain that the following items are properly
connected or set, before calling your NEC dealer.
If a non IBM computer or video card, non Apple Macintosh II computer or
video card is being used, make sure the signal timing and pin assignments
meet the specifications outlined in Appendix A and B and C.
Problem,
No picture.
Image is scrolling or
unstable.
LED on the monitor is
not lit or lit with orange
or yellow colour.
Picture is fuzzy.
Check these items
Power Switch and computer power switch should
be in the ON position. MultiSync signal cable
should be completely connected to the video
card/computer. The video card must be com-
pletely seated in the slot. Check the connector for
bent or pushed-in pins.
Signal cable may not be completely connected to
the computer. Check the pin assignments and
signal timings of the monitor and your video card
with respect to recommended timings and pin
assignments.Check for proper connection or make
sure the video card is PC or Mac compatible and
that the card is properly seated in the computer.
Check SYNC. Switch for its correct position
Power switch should be in the ON position and
the power cord should be connected. Make
certain the computer is not in a power saving
mode (touch keyboard or mouse).
Adjust Contrast and Brightness controls. Push the
Degauss Button once. Caution: A minimum
interval of 20 minutes should exist before the
Degauss Button is used a second time when not
switching between signal modes. Do not hold
down the button down continuously.
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