System diagnostic tests (continued)

Component

Tests

Function

 

 

 

 

Video

Page selection*

Tests the paging function of

(continued)

 

the adapter

 

 

Color’

Tests the background and

 

 

 

border color mapping

 

 

640 x 350 graphics*

Tests the 640 x 350 graphics

 

 

 

display

 

 

640 x 480 graphics’

Tests the 640 x 480 graphics

 

 

 

display

 

 

 

 

I

 

Printer adapter

See ‘Miscellaneous

 

Comm. adapter

Diagnostics’

 

 

 

 

Test appears only if you have installed a color monitor.

Memory Diagnostics

If you have relocated any memory addresses, you must change the addresses to their original locations before running the memory tests or they will not work properly. If an error occurs during a memory test, the program displays this message:

Press <Enter> to view faulty memory chip.

Press m. The program displays a diagram of the main system board and highlights the faulty memory chip.

B-12 Performing System Diagnostics