NEC JC-1946UMW, JC-2241UMW user manual Troubleshooting, No picture, Image is scrolling or unstable

Models: JC-1946UMW JC-2241UMW

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Troubleshooting

Troubleshooting

No picture

Display card should be completely seated in its slot.

Power Button and computer power switch should be in the ON position.

Signal cable should be completely connected to display card/computer.

Check connector for bent or pushed-in pins.

Check that the BNC/D-SUB button is in the correct position.

Image is scrolling or unstable

Signal cable should be completely attached to the computer.

Check pin assignments and signal timings of the monitor and your display card with respect to recommended timings and pin assignments.

If the Macintosh cable adapter is used, check for proper connection or make sure the display card is Macintosh compatible and that the card is properly seated in the computer.

LED on monitor is not lit (no green, orange, yellow color can be seen)

Power Switch should be in the ON position and power cord should be connected.

Picture is fuzzy or color looks blotchy

If the picture is fuzzy, adjust the Moiré Canceler control. If the color looks blotchy, adjust the Brightness, Contrast or GlobalSync® controls, or use the EdgeLockcontrol to change modes.

Access the Degauss Control through OSMcontrols. Activate the Degauss Control.

CAUTION: A minimum interval of 20 minutes should elapse before the Deguass Control is used a second time when not switching between modes.

Picture bounces or a wavy pattern is present in the picture

Move electrical devices that may be causing electrical interference away from the monitor.

See inside cover of User’s Manual for FCC information.

Edges of the display image are not square

Use the OSM Geometry and Corner Correction Controls to straighten the edges.

If possible, position the front of the monitor facing east.

Display image is not centered, too small, or too large

• Use the OSM Size and Position Controls to adjust the image.

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NEC JC-1946UMW Troubleshooting, No picture, Image is scrolling or unstable, Picture is fuzzy or color looks blotchy