Sony GDM-W900 - Manual (Page 19)

Troubleshooting
This section may help you isolate a problem emd as a result, eliminate the need to contact technical support, allowing
continued productivity.
Note the model name and the serial number of your monitor. Also note the make and name of your computer and video
board.
Symptom Check these items
No picture
If neither (!) (power)
indicator nor POWER
SAVING indicator is lit • Check that the power cord is properly connected.
• Check that the (!) (power) switch is in the "on" position.
If the POWER SAVING
^dicator is lit
• Check that your computer power switch is in the "on" position.
• The monitor will recover when you press any key on the keyboard of the computer.
• The INPUT switch setting is incorrect.
• Check that the video signal cable is properly connected and all plugs are firmly seated in
their socket.
• Check that the 5 BNC's are connected in the correct order (from the power cord side:
Red-Green-Blue-HD-VD).
• Ensure that no pins are bent or pushed in the HD15 video input connector.
• Check that the video board is seated completely in the proper bus slot.
If the (!) (power) indicator
is flashing in green • Check that the video frequency range is within that specified for the monitor.
(Horizontal: 30 - 96 kHz, Vertical: 50 -160 Hz)
If the (!) (power) and/or
POWER SAVING
indicators are flashing in
orange • Turn the monitor off and on. If the indicator is off, the monitor is in the normal
condition. If the indicator is still flashing, there is a potential monitor failure.
If you do the above
procedures and the
monitor does not recover • Unplug the video input 1 and 2 connectors and wait for 5 seconds. Then press and hold
the O + button for 2 seconds to display the color bars. If the color bars appear, the
monitor may be in normal condition. Turn the monitor off and on to return to the
normal operation mode. If the color bars do not appear, there is a potential monitor
failure.
If using a Macintosh
system • Check that the Macintosh adapter and the video signal cable are properly connected,
and the dip switches of the adapter are properly set.
If using a Windows95 • When you cannot find "GDM-W900" among the Sony monitors on the Windows95
device select screen, select the DDC standard monitor.
Picture is scrambled • Check your graphic board manual for proper monitor setting.
• Check this manual and confirm that the graphic mode and the frequency at which you
are trying to operate is supported (page 5). Even within the proper range some video
boards may have a sync pulse that is too narrow for the monitor to sync correctly.
Color is not uniform • Degauss the monitor (page 16).
If you place equipment which generates a magnetic field such as a loudspeaker, or you
change the direction of the monitor, color may lose uniformity.
This function is to demagnetize the metal frctme of the CRT to obtain a neutral field for
uniform color reproduction. If a second degauss cycle is needed, allow a minimum
interval of 20 minutes for the best result.
• Adjust the landing (page 11).
You cannot adjust the
monitor with the buttons on
the front panel • If the control lock fimction is set to on, set it to off on the OPTION OSD (page 16).
You will be able to adjust the monitor.
White does not look white • Adjust color (page 12,15).
• Check that the 5 BNC's are connected in the correct order (from the power cord side:
Red-Green-Blue-HD-VD).
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