IBM 9348 Service Information page 26

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Figure 1-3 (Page 6 of 6). Tape Write Reference Codes
Figure 1-4 (Page I of 4). Tape PositioninglServo Reference Codes
Action
No tape mark was detected during a write tape mark verify 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
62 (with parameter A set to 12) to verify the repair.
If this reference code continues to occur, exchange the FRUs as
needed, and run test 62 (with parameter A set to 12) after each FRU is
exchanged to verify the repair.
No identification (ID) was detected during a write ID verify 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 2
to verify the repair.
If this reference code continues to occur, exchange the FRUs as
needed, and run test 2 after each FRU is exchanged to verify the
repair.
1-1 4
9348 Service lnformation
Probable
Cause
70 %
20 %
9%
70 %
20 %
9 '10
Ref.
Code
005E
005F
Ref.
Code
0060
Part Number
Tape
21 F7923
21 F7933
Tape
21 F7923
21 F7933
Part Number
21 F7932
21 F7931
21 F7927
21 F7935
56 F0091
21 F7945
Tape
Probable
Cause
30 '10
26 %
20 %
10%
5%
5%
4%
Action
The tape unit has lost tape tension. The tape may not have an end-of-
tape (EOT) marker.
If the tape has run off the supply reel, manually pass the tape back
through the tape path and wind it around the supply reel. Turn the
supply reel counterclockwise by hand while looking for the EOT
marker. The EOT marker should appear in approximately 25 revo-
lutions. If there was no EOT marker, attempt the operation with
another tape. Installing an EOT marker on the failing tape may cause
loss of data on the failing tape. The 9348 Customer Information
manual contains more information on looking for an EOT marker.
If the tape was not the problem, check that the buffer spring is good.
Clean the tape path (see "Cleaning Procedure" on page 4-3). Then
run test 85. If test 85 fails, exchange FRU 21 F7935 and run test 85
agai n to verify the repai r.
If the problem has not been found, run test 84. If test 84 fails,
exchange FRU 21F7931 and run test 84 again to verify the repair.
If the problem has not been found, check that the cable for FRU
21 F7932 is attached correctly. Run test 86. If test 86 fails, exchange
FRU 21F7932 and run test 86 again to verify the repair.
If the problem has not been found, check that the cable for FRU
21 F7931 is attached correctly. Run test 94. If test 94 fails, exchange
FRU 21 F7931 and run test 94 again to verify the repair.
If the reference code continues to occur, exchange the remaining
FRUs as needed, and run test 95 after each FRU is exchanged to verify
the repair.