IBM 5291 Maintenance Information page 73

0124
0125
0149
Activate Not Valid
This condition indicates that the activate
command that was sent to the display station
was not valid.
Undefined Exception Status
This condition indicates that an undefined
exception status was returned by the display
station in response to a poll.
Undefined Error Status
This condition indicates that the controller found
an error but the cause of the error cannot be
determined.
0182 Device Type Error
This condition indicates that an unrecognized
device responded to a poll.
0183 Wrong Size Display Assembly
The CRT image size does not match the CRT .
image size set in the ID word sent by the
display station.
0184 Incorrect Keyboard ID
The keyboard ID received by the controller was
not correct.
0185 Incorrect Keyboard Specified
The keyboard ID received by the controller does
not match the ID in the keyboard table in use
for the display station.
0189 Invalid Outstanding Status
An outstanding status was sent in the poll
response, and no outstanding status information
was available.
3-54 Error History Table
Time-Out Errors
0190
0191
Even
I
Odd Change in Status
This condition indicates that the status sent to
the controller from the display station did not
change within 225 milliseconds after the
controller sent a positive acknowledgment and
received a not busy response.
Busy
This condition inaicates that the controller found
the busy bit had been on for a period of more
than 400 milliseconds.