IBM 240 Laptop User Manual


 
Troubleshooting charts
External monitor problems
Problem Action
The external monitor is
blank.
Do the following:
1. Connect the external monitor to another computer and make sure it works.
2. Reconnect the external monitor to your computer.
3. Start the ThinkPad Configuration program.
4. Click External Display
or LCD + External Display
on the toolbar in
the ThinkPad Configuration program.
If nothing appears on the external monitor, have the computer serviced.
You cannot set a higher
resolution than the
present one on your
external monitor.
Make sure that:
The ThinkPad display driver is installed correctly.
1. Click Start and move the cursor to Settings; then click Control Panel.
2. Double-click Display.
3. Select the Settings tab in the "Display Properties" window.
4. (For Windows 98) Click Advanced...; then click the Adapter tab.
(For Windows 95) Click Advanced Properties. The "Adapter/Driver Infor-
mation" window appears.Make sure that the ThinkPad display driver is
installed.
If you are not sure that the ThinkPad display driver is installed correctly,
reinstall it.
An appropriate display type or refresh rate is selected.
1. Start the ThinkPad Configuration program.
2. Click LCD
.
3. Click Properties.
4. Make sure the settings in the "Display Properties" window are correct.
5. Click OK to close the window.
104 ThinkPad 240 User's Reference