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Procedure 2
External CRT Check
Connect the external CRT to the T4500/T4500C's external monitor port, then press Fn+F5
If the external CRT works correctly, the internal LCD display may be damaged. Go to Proce-
dure 4.
If the external CRT appears to have the same problem as the internal LCD, the display con-
troller may be damaged. Go to Procedure 3.
Procedure 3
Diagnostic Test Program Execution Check
The Display Test program is stored on the T4700CS/T4700CT/T4800CT 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, Test and Diagnostics, for details.
T4700CS, T4700CT, T4800CT
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