External Monitor Problems - IBM ThinkPad 760E Instruction Manual

External Monitor Problems

Problem
The screen is blank.
You cannot set the higher
resolution for the external
monitor.
The screen is unreadable
or distorted.
Verify that:
The power cord for the external monitor is plugged into a working electrical
outlet and into the external monitor.
The external monitor is turned on and the brightness and contrast controls
are adjusted.
The signal cable for the external monitor is plugged into the external-monitor
connector on the computer. Some signal cables might not fit into the
external-monitor connector because of the connector type.
The external monitor (CRT
device using the Fn key function (see page 26) or the ThinkPad Features
program (see page 35).
After verifying the preceding items, turn off the computer; then turn it on.
If the external monitor remains blank, run the display tests described in the
instructions supplied with the external monitor. If the tests show the external
display is OK, have the computer serviced.
Verify that:
1. The ThinkPad display driver is installed correctly. If you are not sure,
reinstall the display driver referring to Chapter 7.
2. An appropriate monitor type is selected. See the ThinkPad Features
program's advanced setup window.
3. An appropriate refresh rate is selected. See the ThinkPad Features
program.
Verify that:
The ThinkPad display driver is installed correctly (see Chapter 7).
The device setup parameters (resolution and refresh rate) in the display
setting screen (click on the Display (
program) are set to your display resolution and color type (see page 40).
To change or set up the external monitor, see "Using the LCD and an External
Monitor" on page 40.
If these are correct, run the tests described in the instructions supplied with the
external monitor. If the tests show the external display is OK, have the
computer serviced.
Troubleshooting
Action
or Both ) is selected as the display
) icon in the ThinkPad Features
Chapter 8. Solving Computer Problems
247