IBM 727 Manual Of Instruction page 29

Magnetic tape unit and tester, electronic data-processing machines
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output of the SS,p goes up, allowing the relay driver at 5F (75.04) to conduct, latch
picking R42, load point (75. 09.03L).
Systems
Sequence of
Operation
011
Drop R35, R36,
rewind status.
Oil
Drop R33, r e ­
verse.
011
Drop R34, start.
02E
Drop manual
start line.
The moving coil has already been put in a stop status by the line "not arriving at
load p oin t." At the end of the 20ms SST , the line goes up again. By that time, how­
ever, the manual start line has gone down, keeping the moving coil in a stop status.
During the 20ms period, the status is changed from reverse stop to forward stop.
For reference purposes, low-speed rewind and high-speed rewind sequence charts
are includes as Figures 31 and 32 at the end of this manual.
Conditions
R42-1
R35-2
R33-1
R34-1
29
Remarks

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