Troubleshooting - IBM P260 Installation & Operation Manual

Additional Information

Troubleshooting

This section may help you isolate the cause of a problem and as a result, eliminate the need to contact technical support.
Symptom
No picture
If the u indicator is not lit
If the "NO INPUT SIGNAL"
message appears on the
screen, or if the u (power)
indicator is either orange or
alternating between green and
orange
If the "NO INPUT SIGNAL"
and "CHECK SIGNAL
CABLE" messages appear on
the screen, or if the u
indicator is either orange or
alternating between green and
orange
If the "OUT OF SCAN
RANGE" message appears on
the screen
If no message is displayed
and the u indicator is green
or flashing orange
Picture is scrambled
Color is not uniform
You cannot adjust the
monitor with the buttons on
the front panel
18
Check these items
• Check that the power cord is properly connected.
• Check that the u (power) switch is in the "on" position.
• Check that the input switch setting is correct (page 5).
• Check that the video input connector's pins are not bent or pushed in.
• 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.
• Check that the video signal cable is properly connected and all plugs are firmly seated
in their sockets.
• Ensure that no pins are bent or pushed in the video input connector.
• Check that the input switch setting is correct (page 5).
• Check that the graphic board is completely seated in the proper bus slot.
• Check that the video frequency range is within that specified for the monitor.
(Horizontal: 30 – 121 kHz, Vertical: 48 – 160 Hz)
Refer to your computer's instruction manual to adjust the video frequency range.
• See "Self-diagnosis Function" (page 20).
• Check your graphics board manual for the proper monitor setting.
• Check this manual and confirm that the graphics mode and the frequency you are
trying to operate at is supported. 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.
• Degauss the monitor (page 13).
If you place equipment which generates a magnetic field, such as a loudspeaker, near
the monitor, or you change the direction of the monitor, color may lose uniformity.
The degauss function demagnetizes the metal frame 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 10).
• If the control lock function is set to ON, set it to OFF using the OPTION OSD
(page 14).