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IBM 3741 Operator's Manual page 151

Data station
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Notes:
1.
When sensitive data is being processed, proceed as fol-
lows to assure the last card of a punch operation can-
not be duplicated:
2.
A.
Place the data recorder off line.
B.
Feed a blank card by pressing REL on the data
recorder.
To be sure that the last card is punched during punch
operations, you must check for an error condition on
the data recorder.
• If using a 129 Data Recorder and an 88 appears in
the column indicator:
A.
Register a blank card at the punch/read sta-
tion.
B.
Turn off SPL FEAT and the last card sent is
punched automatically.
• If using a 129 Data Recorder and an SA appears in
the column indicator:
A.
Remove the jammed cards manually. (Do
not use the CLEAR switch.)
B.
Switch SPL FEAT to OFF.
C.
Press DUP until a card feeds.
D.
Check the card for registration. If the regis-
tration is off, press DUP again until another
card is punched.
• If using a 5496 Data Recorder and the feed check
light indicates a hopper misfeed:
A.
Place some good cards in the hopper.
B.
Switch TERMINAL to MANUAL.
c.
Press REL and a card is punched.
141

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