AT&T 610 - Keyboard-Generated Self-Test

U$er's Guide
August 1985
Keyboard-Generated Se1f-Test
Operating Inforaation
Page 2- 5
A self-test procedure is initiated when, with the power on
and
the Shift, and Ctrl (Control) keys depressed, the Esc
(Escape) key is depressed. If the keyboard is malfunctioning,
the message "ERROR: Kybd" will be displayed on the status line;
if there is an error in the internal RAM, the message
"ERROR: Base" will be displayed, if there is an error in the
external RAM, the message "ERROR: RAM" will be displayed.
Other messages ("ERROR: Cartridge" or "ERROR: 10") indicate
cartridge and expansion I/O card failures.
If the internal RAM fails the self-test, the screen may not
contain any error messages. If more than one failure exists,
the message will read (in the worst case) "ERROR: Base Kybd RAM
Cartridge 10."
If all of the internal tests are passed, a message
indicating the terminal personality and the fact that all the
tests were passed is displayed on the status line. For example,
if the internal ROM is running, the message will read "610 OK."
If running from a cartridge, "610" would be replaced by a
different appropriate identification.
All test messages will remain on the screen until a
character is received or a keyboard key is depressed.
The keyboard may also be self-tested by simultaneously
depressing the Shift, Shift, and Ctrl keys (left Ctrl key on the
56K430/ACZ Keyboard). A successful test is followed by the
keyboard bell being sounded.