After checking the character fonts, respond to the prompt:

Is the display correct (Y/N)?

If the characters displayed match the illustration, press Y and Enter. If you find a problem with the characters on the screen, press N and Enter to display the error message.

40-Column Character Set Check

To check your 40-column character set, press 4 and then Enter. The character fonts that are included in the internal character generator are displayed. Compare the characters on your screen to this illustration:

After checking the character fonts, respond to the prompt:

Is the display correct (Y/N)?

If the characters displayed match the illustration, press Y and Enter. If you find a problem with the characters on the screen, press N and Enter to display the error message.

320x200 Graphics Mode Check

To check your 320x200 graphics mode, press 5 and then Enter.

The screen displays three colored squares-light green, brown, and red-against a cyan background. (On the LCD display, the colors appear as shades of gray.) These four colors make up Color Set 0. If they are correct, press Y and then Enter.

Performing System Diagnostics

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