IBM 3742 Reference Manual page 80

Code Type Causes
What To Do
M Mode selection Verify (V) mode from enter (E) or Reset and reselect correct mode.
(continued) search (S) mode.
Field correct (C) mode was attempted Reset and reselect correct mode.
with one of the following conditions:
1. Not in verify (V) mode
2.
While in an auto dup/skip field
3. When currently at the end of
the record
Update (U) mode was attempted Reset and reselect correct mode.
from enter (E) mode or from search
(S) mode when search was selected
from enter (E) mode.
Communications mode was attempted Reset and reselect correct mode.
from verify (V), enter (E), or search
(S) mode.
Search on content was attempted Reset and reselect correct mode.
from update (U) mode when currently
on the last record in the data set.
DISPLAY PROG was pressed in con- Reset and reselect correct mode.
junction with either shift key in verify
(V) or field correct (C) mode.
Disk initialize was attempted under Reset, select primary station, and remove
one of the following conditions: disk from secondary station.
1. From the secondary station
2.
When the primary station isn't
on the index track
3.
When the secondary station
has a disk inserted
Program select was attempted in field Reset and reselect correct mode.
correct (C) mode.
Program load was attempted in verify Reset and reselect correct mode.
(V) mode or field correct (C) mode.
N Keyboard Keying rate exceeded machine capacity. Reset and continue.
overrun
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