Condition Sensed Failing
FRU
or Action
RCV buffer overrun AIE2, AIF2.
Single-frame
or
multi frame
If
the condition was sensed
at
an address where there
is
no work station,
ensure that:
1.
The cable
is
connected to the correct port
at
the system.
2.
The address switches on the work station are set correctly.
3.
The terminator switch on the work station
is
set correctly.
If
a work station display responded with a multi frame condition,
see
the
device maintenance manual to isolate the failure. A multiframe response
from a work station display is
not
valid.
If
a work station printer failed to respond with the multi frame condition,
see
the device maintenance manual to isolate the failure. The work station
printer failed to perform the modeset command.
No
response
If
a work station did not respond:
1.
Verify that the work station
is
powered on and is in a Ready condition
(not in setup or test mode).
2.
Verify that the address and terminator switches are set correctly.
3.
If
the above steps are OK, exchange
AIF2
or
AIE2.
4.
Check the twinaxial cable ("714 Local Work Station Cable Ohmmeter
Test"
on page
7-15
and "710 Local Work Station Cable Signal Quality
Check").
If
a work station printer failed to respond, also
see
the action under
single-frame or multi frame condition.
Serial parity check
A1F2 or AIE2.
Driver activity check A1F2, AIE2, or a short circuit in one
of
the work station cables.
710 Local Work Station Cable Signal Quality Check
DANGER
Do
not work with cables during an electrical storm.
For
an
alternative method
of
checking the cable,
see
"714 Local Work Station Cable Ohmmeter Test"
on
page 7-15.
Installing
and
maintaining the cable
is
a customer task. However,
if
aid
is
requested,
see
the following
manuals for additional information:
•
For
more information on twinaxial cabling,
see
the
IBM
5250 Information Display System Planning and
Site Preparation Guide, GA21-9337.
Section
7.
Local Work Station Procedures 7-3
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