1-6. Buffer Controller Reference Codes - IBM 9348 Service Information

Figure 1-6. Buffer Controller Reference Codes
-
O O A O
OOAl
/
Part Number
Code
A data parity error has occurred. If this reference code continues to
occur, run test 140 to isolate FRU 56F0080. If test 140 fails, exchange
56F0080 and run test 140 to verify the repair.
If test 140 did not fail at the start, run test 2. If test 2 fails or if the ref-
erence code continues to occur, exchange the FRUs in sequence as
needed, and run test 2 after each FRU is exchanged to verify the
repair.
A byte-count error has occurred during a read operation. If the refer-
ence code continues -to occur, exchange the FRUs as needed, and run
test 2 after each FRU is exchanged to verify the repair.
Probable
Cause Action
56 F0080
tic int
code
OOA4
I
Operator
A zero-byte record was read by the tape unit or requested by the
system. This is illegal.
If a zero-byte record was not read or requested, exchange the FRU
and attempt the operation again to verify the repair. If the reference
code continues to occur, contact your next level of support.
99 %
Tape
21 F7932
21 F7923
21 F8063
- - - -
Configuration parameter 55 is not set to 0 . Set configuration param-
eter 55 to 0. See "Changing Configuration Values" on page D-1.
The tape unit lost synchronization between tape position and records
written during a backspace operation. This problem may be caused
by a bad tape or a dirty tape path. Clean the tape path; see "Cleaning
Procedure" on page 4-3. Load a tape that is known to be good and
attempt the operation again or run test 86 to verify the repair.
If this reference code continues to occur, exchange the FRUs as
needed, and run test 86 after each FRU is exchanged to verify the
repair.
O O B F microcode
I
An illegal condition has occurred in the tape unit microcode.
If this reference code continues to occur, contact your next level of
support immediately. If possible, do not disturb the error condition on
the tape unit.
Chapter
1.
Anal
yring Problems
1 -1 9