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7901A
3·1.
INTRO DUCTION.
3-2.
Operating instructions for the disc drive are
covered in this section of the manual.
3·3.
OPERATING CONTROLS AND INDICATORS.
3-4.
Front and rear panel controls, indicators, and
terminals of the disc drive are identified in figure 3-1.
3·5.
OPERATING INSTRUCTIONS.
3-6.
To operate the disc drive, proceed as follows:
a. Set the DATA PROTECT switch (on the inside, right-
hand side of drive) to the ON position if data protec-
tion is required.
b. Set SOFTWARE PROTECT-OVERRIDE switch to
desired position (see figure 3-1).
c. Set UNIT SELECT switch for proper operation with
the controller (see figure
3-1)~
d. Press POWER switch on front panel to ON position.
The lamp in the POWER switch will light and the
DOOR UNLOCKED lamp will light.
e. Open the disc drive front door by pulling out and down
from the upper inset edge of the front door.
f.
Install a front-loading disc cartridge (2200 bpi surfaces)
with the access-door end first.
I
CAUTION
I
If a head crash should occur, do not
attempt to retrieve data by putting the
damaged cartridge in another disc drive or
a second head crash might occur.
g. Close the disc drive front door.
h. Press the disc drive LOAD switch to the ON position;
the DOOR UNLOCKED lamp will go out. After a
30-second start-up time, the DRIVE READY lamp will
light, indicating that the cartridge has been air purged
and the disc drive heads are loaded. The DRIVE
FAULT lamp will light only if an illegal memory opera-
tion is attempted, if some of the read/write circuitry
failed, or if a seek operation did not finish within 850
milliseco nds.
OPERATION
II
3-7.
To change a cartridge in the disc drive, proceed as
follows:
a. Press the disc drive LOAD switch to the OFF position.
The DRIVE READY light will immediately go out.
b. Allow the spindle to halt (approximately 35 seconds).
c. The DOOR UNLOCKED indicator will light.
d. Open the disc drive front door by pulling ou t and down
from the upper inset edge of the front door.
e. Remove the cartridge by grasping firmly and pulling
out.
f.
Install the new disc cartridge, access-door end first.
g. Close the disc drive front door.
h. Press the disc drive LOAD switch to the ON position.
3-8.
After a 30-second start-up time, the DRIVE READY
lamp will light, indicating the heads have loaded and
disc drive is awaiting a command from the disc drive
controller.
To shut the unit off, proceed as follows:
a. Press the disc drive LOAD switch to the OFF position.
b. Allow the spindle to halt (approximately 35 seconds).
The DOOR UNLOCKED indicator will light.
c. Set the disc power supply POWER switch to the OFF
position. The drive POWER lamp on the disc drive will
go off.
CAUTION
Power down the disc unit using the
LOAD switch, not the POWER switch. If
the unit is powered down using the
POWER switch while the heads are
loaded, the internal batteries must retract
the heads. Unnecessary use of internal
battery power to retract the heads might
lead to a possible problem; head or disc
damage will occur if the internal-battery
protection feature fails.
3-1
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