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946261·9701
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2.
Set the dc circuit breaker (labeled 34 VOLTS) to ON. The breaker toggle is located
behind the semicircular protective flange.
NOTE
Set the dc circuit breaker before setting the ac circuit breaker
(following step) or the ac breaker will not set.
3.
Set the ac circuit breaker (labeled
~IAIN)
to ON. Fan should start.
2.4.8 DISK CARTRIDGE INSTALLATION AND REMOVAL. Before installing or removing a
disk cartridge from the disk drive, be sure that the spindle of the disk drive is not rotating. Do not
attempt to install or remove a cartridge unless the brush indicator on top of the disk drive is aligned
with the black area as shown in Figure 2-42. A coin or screwdriver may be used to make the
alignment.
2.4.8.1 Purging the Disk Drive Air Filtering System. Before installing the drive on the system but
after inspection and power configuration, it is necessary to purge the air filtering system to assure
that any residual dust or contamination is removed.
This is accomplished by performing the following steps.
1.
Set the MAIN circuit breaker to OFF.
2.
Unplug AIP2 on the actuator.
3.
Install a scratch cartridge (see paragraph 2.4.8.2).
4.
Set the MAIN circuit breaker to ON.
s.
Set the START/STOP switch to ON.
6.
Allow the disk to spin and run with the heads retracted for 30 minutes.
2·51
Digital Systems Division
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