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For this check, the program writes specific data into memory and then
reads it back. The data is written and read in blocks of 64KB. A parity check
is also made on each block. A memory count displays after each block tests
without error. After the program checks the last block, you see a message
like:
000640 KB 0K
If an error occurs, make a copy or a printout of the error code and
message, and contact your dealer or Epson for customer service. Attempting
to correct memory errors yourself may violate your warranty agreement.
Note: Memory above 640KB, which is normally not available to
MS-DOS, is checked using the protected mode of the 80286 CPU
chip.
Keyboard Check
Use this option to check the operation and the configuration of the
keyboard.
The program first checks the keyboard controller; during this check,
you see the green indicator lights on the keyboard flash.
Before checking the operation of the keys, you must select the appro-
priate keyboard layout so that the test display matches the keys on your
keyboard. You see this menu:
KEYBOARD SELECT MENU
1
- US ASCII
;
-
United Kingdom
-
French
4
- German
5-
Italian
6 - Spanish
0 - Exit
Enter selection number:
Type the number of your keyboard layout, then press
Enter. You
can exit
the keyboard test by pressing 0 and
Enter.
Diagnostics
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