IBM 727 Manual Of Instruction page 35

Systems Sequence of
Operation
04D Pick R5, R6, start
slow rewind, and
HD7, time delay.
05F Drop R12, high
speed, and DP3,
rewind mtr.
10.01 1/2 power to right
stop clutch.
05E Pick DPI, take-
up mtr. reverse.
06G Pick HD8, retract
06B
caps. Pick re ­
tracting solenoid
latch.
05E HD6, take-up mtr.
From this point on, the sequence of events is identical to slow-speed rewind, and
the operation terminates when load point is reached.
high-speed rewind sequence chart at the end of this manual (Figure 32).
Condition
Arm switch
R5BL
R12BL
R6BLn/o
R6AUn/o
R6AL
Time delay point
See section 7.0 and also the
35
Remarks
Start time delay motor.
Turn power off rewind
mtr.
Start slowing down. No
brake on left stop clutch.
Prepare to lower head
cover.
Prepare to extend cap­
stans.
By this time, tape has
been braked to a stop,