2.8 Display Troubleshooting 2 Troubleshooting
PORTEGE R200 Maintenance Manual (960-519) [CONFIDENTIAL] 2-39
2.8 Display Troubleshooting
This section describes how to determ ine if the computer’s display is functioning properly.
Start with Procedure 1 and continue with the other procedures as instructed.
Procedure 1: External Monitor Check
Procedure 2: Diagnostic Test Program Execution Check
Procedure 3: Connector and Cable Check
Procedure 4: Replacement Check
Procedure 1 External Monitor Check
Connect an external monitor to the computer’s external monitor port, then boot the computer.
The computer automatically detects the external monitor.
If the external monitor works correctly, the internal LCD may be faulty. Go to Procedure 3.
If the external monitor appears to have the same problem as the internal monitor, system
board may be faulty. Go to Procedure 2.
Procedure 2 Diagnostic Test Program Execution Check
The Display Test program is stored on the Diagnostics disk. Insert the Diagnostics disk in the
computer’s floppy disk drive, turn on the computer and run the test. Refer to Chapter 3, Tests
and Diagnostics for details.
This program checks the display controller on the system board. If an error is detected, go to
Procedure 3.