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The brightness dial is on the right side of the display unit. Use this dial to adjust the display
screen.
If the brightness does not change when you adjust it, go to Procedure 2.
Procedure 2 External CRT Check
Connect the external CRT to the T6400's RGB port, then cold boot the computer. The computer
automatically detects the external CRT.
If the external the CRT works correctly, the internal color LCD or plasma display may be damaged.
2-35
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