Sony CPD-G420S Trouble symptoms and remedies, Symptom, No picture, Picture is fuzzy, Check these items, Picture flickers, bounces, oscillates, or is scrambled

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 21) 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 SIGNAL message appears	• Check that the video signal cable is properly connected and all plugs are firmly seated in
on the screen, or if the	their sockets (page 6).
! (power) indicator is orange	• Check that the INPUT switch setting is correct (page 8).
	• 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	xProblems caused by the connected computer or other equipment
message appears on the screen	• 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 – 110 kHz
	Vertical: 48 – 170 Hz

If no message is displayed and the	• Use the Self-diagnosis function (page 21).
! (power) indicator is green or
flashing orange

If using a Macintosh system	• Check that the Macintosh adapter (not supplied) and the video signal cable are properly
	connected (page 7).

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 graphics board manual for the proper monitor setting.

•Confirm that the graphics mode (VESA, Macintosh 21" Color, etc.) and the frequency of the input signal are supported by this monitor (Appendix). Even if the frequency is within the proper range, some graphics 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 contrast and brightness (page 11).
	• Degauss the monitor* (page 13).
	•	Adjust the degree of moire cancellation until the moire is minimal, or set CANCEL
		MOIRE to OFF (page 13).

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