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IBM 3741 Operator's Manual page 260

Data station
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Code
Type
Z
Last Record
Write Error
Disk Errors (Numbers)
0
Early Disk
Removal
Mode
E,U
v
ALL
ALL
Causes
• In Enter (E) or Update (U) mode,
the write error occurred when per-
forming a record advance at EOE.
• In Verify (V) mode, the write
error occurred when performing
a record advance on the last rec-
ord of the data set.
• Removed the diskette while the
disk operations were in process.
• Removed the diskette while not
on track 00.
250
What You Do
Reset, search EOD and inspect the rec-
ord displayed. Update the record if
necessary and record advance to rewrite
the record.
Reset, search EOD, select Verify mode
and reverify the record if necessary.
Then record advance to rewrite the rec-
ord.
Insert diskette, press NUM SHIFT with
RESET key. Inspect and modify the
data set label if incorrect.
Write down the current disk address
from the status line. Insert diskette and
press NUM SHIFT and RESET (posi-
tions the disk on track 00; sector 08).
If in Enter mode when the diskette was
removed, modify the corresponding data
set label with EOD set to the recorded
address. If not in Enter mode but had
been since leaving track 00, set EOD
equal to EOE and search for the last rec-
ord entered. Record advance, write down
current disk address, return to index, and
modify the label with EOD set to the
recorded address.

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