Toshiba Satellite Pro L450-W1543 Maintenance Manual - Page 50

Troubleshooting Procedures, Satellite A350, SATEGO A350, EQUIUM A350 Series Maintenance Manual, Tests and, Diagnostics

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2 Troubleshooting Procedures Procedure 1: External display check Procedure 2: Diagnostic check Procedure 3: Connector and replacement check Procedure 1 External display check Connect an external display to the computer's external monitor port, and then boot the computer. The computer automatically detects the external display. If the external display works correctly, the internal LCD may be damaged. Go to Procedure 3. If the external monitor appears to have the same problem as the internal monitor, the system board may be damaged. Go to Procedure 2. Procedure 2 Diagnostic check The Display Test program is stored on the computer's Diagnostics disk. This program checks the display controller on the system board. 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. If an error is detected, go to Procedure 3. If an error is not detected, the display is functioning properly. Satellite A350, SATEGO A350, EQUIUM A350 Series Maintenance Manual 15

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2 Troubleshooting Procedures
Satellite A350, SATEGO A350, EQUIUM A350 Series Maintenance Manual
15
Procedure 1:
External display check
Procedure 2:
Diagnostic check
Procedure 3:
Connector and replacement check
Procedure 1
External display check
Connect an external display to the computer’s external monitor port, and then boot the
computer.
The computer automatically detects the external display.
If the external display works correctly, the internal LCD may be damaged. Go to Procedure 3.
If the external monitor appears to have the same problem as the internal monitor, the system
board may be damaged.
Go to Procedure 2.
Procedure 2
Diagnostic check
The Display Test program is stored on the computer’s Diagnostics disk.
This program checks
the display controller on the system board.
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.
If an error is detected, go to Procedure 3.
If an error is not detected, the display is functioning
properly.