Sun Microsystems Sun Workstation 100U System Manager's Manual page 31

Subsystem Set-Up
Sun 100/150 Installation Manual
3. Remove the foam piece and the cardboard below it; you'll see four styrofoam corner pieces
and another box. Remove the inner box from the shipping carton.
4.
Peel off the tape which seals this box. DON'T CUT OPEN the box, or you may damage
the finish on the unit. Remove the metal unit - this holds the 84-MByte disk subsystem,
and may also contain a l/4-inch tape drive.
We recommend that you save the salvageable shipping carton and packing material for
future use in case the product must be reshipped.
5. If you are mounting the subsystem in a 19-inch rack, proceed with the next three steps;
otherwise, unlock the heads on the disk drive by following the procedure in step 7, and
then proceed with cabling in step 9.
6. To mount the subsystem, first mount the slides at the chosen position in the rack.
7. Before
ctlre/ully sliding the subsystem into the rack, you must unlock the heads on the disk
drive. The head lock lor the 84-MByte drive is on the bottom of the subsystem enclosure,
so you must either tilt or elevate the enclosure to get at it. To unlock the heads, use a large
screwdriver to rotate the white plastic knob on the bottom of the unit to the OFF position.
AL WAYS lock the heads by rotating this knob to the ON position before moving the drive
- even from table to table. More detailed instructions are in the Fujitsu Microdisk Drives
CE Manual.
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8. Now, slide the sub!lystem into the rack.
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9. The disk subsysten\ is attached to either the Model 100U workstation backpanel or the
Model 150U card ca.ge enclosure backpanel via two flat ribbon cables. The (wider) control
cable comes out of the back of the Fujitsu disk drive enclosure, and is labelled "DISK".
This cable plugs into the connector labelled
'DISK COMMAND'
on the Sun backpanel. The
(narrower) data or "B" cable for each of up to four drives plugs into one of the four SMD-B
connectors labelled
'DISK DATA
lx' on the back panel, where z is 0 through
3.
The first
disk drive must be cabled to connector
'DISK DATA
#0'; the second should be cabled to
'DISK DATA
#1 '.
The disk controller installed in the card cage of both the Model100U and the 150U is a Xylogics
450 controller which
can
control up to four drives; however, the system is configured for a max-
imum of two drives per controller. As shipped, each drive is configured as the first drive, that is,
unit number 0, by setting section 4 of SWI (accessible at the top of the drive) to ON and all
other sections to OFF. SW2 and SW3 are set correctly as they come from Sun, and should be
3-2
Revision H of 12 March 1984