Toshiba portege 610ct 620ct Instruction De Maintenance

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This section describes how to determine if the 610CT 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 Check

Procedure 4:

Replacement Check

Connect the external monitor adapter to the computer’s port replicator port and an external
monitor to the external monitor adapter, then boot the computer.  The computer automati-
cally detects the external monitor even if Resume mode is enabled.

If the external monitor works correctly, the internal LCD display may be damaged.  Go to
Procedure 3.

If the external monitor appears to have the same problem as the internal LCD, the display
controller may be damaged.  Go to Procedure 2.

The Display Test program is stored on the 610CT Diagnostic Disk.  This program checks the
display controller on the system board.  After loading Toshiba MS-DOS, run the Diagnostic
Program.  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 function-
ing properly.