Sony Trinitron HMD-A420 Manual De Instrucciones página 13

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 15) if the following recommendations do not resolve the problem.
Symptom
No picture
If the ! (power) indicator is not lit
If the NO INPUT SIGNAL message
appears on the screen, or if the !
(power) indicator is orange
If the OUT OF SCAN RANGE
message appears on the screen
If no message is displayed and the !
(power) indicator is green or flashing
orange
If using a Macintosh system
Picture flickers, bounces,
oscillates, or is scrambled
Picture is fuzzy
Picture is ghosting
Picture is not centered or sized
properly
Edges of the image are curved
Wavy or elliptical pattern (moire)
is visible
Check these items
• Check that the power cord is properly connected.
• Check that the ! (power) switch is in the "on" position.
• Check that the video signal cable is properly connected and all plugs are firmly seated in
their sockets (page 6).
• Check that the HD15 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 computer 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.
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 – 96 kHz
Vertical: 48 – 120 Hz
• Use the Self-diagnosis function (page 15).
• Check that the Macintosh adapter (not supplied) and the video signal cable are properly
connected (page 6).
• Isolate and eliminate any potential sources of electric or magnetic fields such as other
monitors, laser printers, electric fans, fluorescent lighting, or televisions.
• 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, etc.) and the frequency of the input signal are
supported by this monitor (Appendix). Even if the frequency is within the proper range,
some video 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.
• Adjust the brightness and contrast (page 9).
• Degauss the monitor* (page 11).
• Select CANCEL MOIRE and adjust the moire cancellation effect (page 11).
• Eliminate the use of video cable extensions and/or video switch boxes.
• Check that all plugs are firmly seated in their sockets.
• Adjust the size (page 10) or centering (page 10). Note that some video modes do not fill
the screen to the edges.
• Adjust the geometry (page 10).
• Select CANCEL MOIRE and adjust the moire cancellation effect (page 11).
xProblems caused by the connected computer or other equipment
• Change your desktop pattern.
GB
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