IBM 727 Manual Of Instruction page 25

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Systems
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Thread tape on machine.
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02A
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03L
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A
w
04C
m
w
05C
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06H
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10.02
05D
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04C Hold R2, load-
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rewind
06H
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transfer.
01H
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tape-end lights.
04D Pick R5, R6, start
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a
04D
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Sequence of
Operation
Push load-rewind
button.
Pick R40, rewind R 42-3n /c, relay driver
PU (75.08), manual load-
rewind line and read
status.
Pick R2, load-
R 4 0 -ln /o
rewind.
Pick R3, R31, R2BLn/0
load-rewind.
LT R21, R26,
unload.
Pick HD4, vacuum R 2 6 -ln /c
mtr.
HD4 pt.
Start vacuum mtr.
Drop R i l , R22, R21-4
unload.
R2ALn/o, caps out m icro­
switches.
Hold R13, clutch
R3BU
Shunt load pt. and R3AU
R2AU, reel-a rm switch
slow rewind and
HD7, time delay.
R5ALn/o
Hold R5, R6, HD7.
Conditions
so tape can be threaded
on the machine easily.
R40 has no hold circuit.
R13 holds through a
different point.
25
Remarks