HP Color Display A7217A Trouble symptoms and remedies, Symptom, No picture, is visible, Picture is fuzzy, Check these items, Picture is ghosting, Picture flickers, bounces

Trouble symptoms and remedies

If the problem is caused by the connected computer or other equipment, please refer to the connected equipment’s instruction manual. Use the self-diagnosis function (page 20) if the following recommendations do not resolve the problem.

Symptom	Check these items
No picture
If the ! (power) indicator is not lit	•	Check that the power cord is properly connected.
	•	Check that the ! (power) switch is in the “on” position.

If the NO INPUT SIGNAL message appears on the screen, or if the

!(power) indicator is either orange or alternating between green and orange

•Check that the video signal cable is properly connected and all plugs are firmly seated in their sockets (page 6).

•Check that the INPUT switch setting is correct (page 9).

•Check that the video input connector’s pins are not bent or pushed in.

xProblems caused by the connected computer or other equipment

•The computer is in power saving mode. Try pressing any key on the keyboard or moving the mouse.

•Check that the computer’s power is “on.”

•Check that the graphic board is completely seated in the proper bus slot.

If the OUT OF SCAN RANGE message appears on the screen

xProblems caused by the connected computer or other equipment

•Check that the video frequency range is within that specified for the monitor. If you replaced an old monitor with this monitor, reconnect the old monitor and adjust the frequency range to the following.

Horizontal: 30 – 121 kHz

Vertical: 48 – 160 Hz

If no message is displayed and the

!(power) indicator is green or flashing orange

• Use the Self-diagnosis function (page 20).

If using Windows 95/98	•	If your PC/graphic board has difficulty communicating with this monitor, download the
		specific driver by accessing the web site of Microsoft Corporation.

Picture flickers, bounces,	•	Isolate and eliminate any potential sources of electric or magnetic fields such as other
oscillates, or is scrambled		monitors, laser printers, fluorescent lighting, televisions, or electric fans.
	• Move the monitor away from power lines or place a magnetic shield near the monitor.
	• Try plugging the monitor into a different AC outlet, preferably on a different circuit.
	•	Try turning the monitor 90 ° to the left or right.

xProblems caused by the connected computer or other equipment

•Check your graphic board manual for the proper monitor setting.

•Confirm that the graphics mode (VESA, etc.) and the frequency of the input signal are supported by this monitor (Appendix). Even if the frequency is within the proper range, some graphic boards may have a sync pulse that is too narrow for the monitor to sync correctly.

•Adjust the computer’s refresh rate (vertical frequency) to obtain the best possible picture.

Picture is fuzzy	•	Adjust the brightness and contrast (page 11).
	• Degauss the monitor* (page 15).
	•	If CANCEL MOIRE is ON, the picture may become fuzzy. Decrease the moire
		cancellation effect or set CANCEL MOIRE to OFF (page 14).

Picture is ghosting	•	Eliminate the use of video cable extensions and/or video switch boxes.
	• Check that all plugs are firmly seated in their sockets.

Picture is not centered or sized properly

•Press the ASC button (page 9).

•Adjust the size or centering (page 12). Note that some video modes do not fill the screen to the edges.

Edges of the image are curved	•	Adjust the geometry (page 12).
Wavy or elliptical pattern (moire)	•	Set CANCEL MOIRE to ON and adjust the degree of moire cancellation until the moire is
is visible		at a minimum (page 14).

xProblems caused by the connected computer or other equipment

• Change your desktop pattern.