Lenovo PC 300PL User guide for IBM PC300PL (type 6584, 6594) systems - Page 133

Monitor problems, Action, Attention

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Monitor problems Screen flickers. The monitor works when you turn on the system, but goes blank when you start some application programs. The monitor works when you turn on the system, but goes blank after some period of computer inactivity. Blank screen. Only the cursor appears. Action Set the monitor for the highest, noninterlaced refresh rate supported by your monitor and the video controller in your computer. Attention: Using a resolution or refresh rate that is not supported by your monitor might damage it. You can reset the refresh rate through your operating system, using the instructions provided in the README files. See your operating system documentation for further information on monitor settings. If this does not correct the problem, have the monitor and computer serviced. Verify that: 1. The monitor signal cable is securely connected to the monitor and the monitor connector on the graphics adapter. For the location of the monitor connector on the graphics adapter installed in your computer, see "Connecting computer cables" on page 10. 2. The necessary device drivers for the application programs are installed. If you cannot correct the problem, have the computer serviced. The computer is probably set for energy savings using one of the power-management settings. If power-management features are enabled, disabling or changing the settings might solve the problem (see "Power-management features" on page 51). If you cannot correct the problem, have the computer serviced. Verify that: 1. The computer power cord is plugged into the computer and a working electrical outlet. 2. The monitor is turned on and the Brightness and Contrast controls are adjusted correctly. 3. The monitor signal cable is securely connected to the monitor and the monitor connector on the back of the computer. To find the monitor connector, see "Connecting computer cables" on page 10. If you cannot correct the problem, have the computer serviced. Have the computer serviced. Chapter 6. Troubleshooting 119

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Monitor problems
Action
Screen flickers.
Set the monitor for the highest, noninterlaced refresh
rate supported by your monitor and the video
controller in your computer.
Attention:
Using a resolution or refresh rate that is
not supported by your monitor might damage it.
You can reset the refresh rate through your operating
system, using the instructions provided in the
README files.
See your operating system
documentation for further information on monitor
settings.
If this does not correct the problem, have the monitor
and computer serviced.
The monitor works when
you turn on the system,
but goes blank when you
start some application
programs.
Verify that:
1.
The monitor signal cable is securely connected to
the monitor and the monitor connector on the
graphics adapter.
For the location of the monitor
connector on the graphics adapter installed in your
computer, see “Connecting computer cables” on
page 10.
2.
The necessary device drivers for the application
programs are installed.
If you cannot correct the problem, have the computer
serviced.
The monitor works when
you turn on the system,
but goes blank after
some period of computer
inactivity.
The computer is probably set for energy savings using
one of the power-management settings.
If
power-management features are enabled, disabling or
changing the settings might solve the problem (see
“Power-management features” on page
51).
If you cannot correct the problem, have the computer
serviced.
Blank screen.
Verify that:
1.
The computer power cord is plugged into the
computer and a working electrical outlet.
2.
The monitor is turned on and the Brightness and
Contrast controls are adjusted correctly.
3.
The monitor signal cable is securely connected to
the monitor and the monitor connector on the back
of the computer.
To find the monitor connector,
see “Connecting computer cables” on page
10.
If you cannot correct the problem, have the computer
serviced.
Only the cursor appears.
Have the computer serviced.
Chapter 6.
Troubleshooting
119