NEC LCD1280 user manual Troubleshooting/Support, Problem, Check These Items, Controls

LCD1280 10/29/99 9:25 AM Page 7

Controls

Fine VGA Horizontal Adjust (V-H2): fine adjustment for horizontal position of VGA mode (2 pixel / 1 dot increment per operation).

Rough VGA Vertical Adjust (V-V1): rough adjustment for vertical position of VGA mode (32 pixel / 16 line increment per operation).

Fine VGA Vertical Adjust (V-V2): fine adjustment for vertical position of VGA mode (2 pixel / 1 line increment per operation).

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	Troubleshooting/Support
Problem	Check These Items
No Picture	• The signal cable should be completely connected to the video card/computer.
	• The video card should be completely seated in its slot.
	• Power Switch and computer power switch should be in the ON position.
	• Check BNC connectors to make certain that each connector has been attached correctly.
	• Check H-SEL Switch and SYNC Switch to make certain that they are in the
	correct position according to the Installation section of this manual.

Image is unstable or swimming is apparent

•Signal cable should be completely attached to the computer.

•Check the monitor and your video card with respect to compatability and recommended signal timings (Please see FastFacts document #52301280 and Appendix 2).

•Check the SYNC Switch and H-SEL Switch for their correct position.

LED on the monitor is not lit (no green or amber color can be seen)

•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 the keyboard or mouse).

Picture is not focused or jitter is present

•Use WS Clock Delay Adjust (H-C) or VGA Clock Delay Adjust (V-C) to focus display. When the display mode will be changed, the clock settings may need to be re-adjusted.

Display image is not centered • Use WS and VGA horizontal and vertical adjustment controls located on the rear of the panel to adjust centering.

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