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INTRODUCTION
1.5 -- Hardware Installation
1.5 Hardware Installation
The
floppy disk controller module and drive" unit should
be inspected upon receipt
for
broken,
damaged,
or
missing
parts
as
well
as
for damage to the printed circuit board.
The packing materials should be saved in case
reshipping
is
necessary.
1.
5.1 Four-drive system installation
The following procedure must be performed to install the
four diskette
drive
version
of
the
EXORdisk
III.
This
section
is
not
applicable
to
EXORdisk
II
systems or to
dual-drive EXORdisk
I i I
systems.
This
procedure
must
be
performed
before
the
floppy
disk
controller
module
is
instailed (next section).
It should be
noted
that
in
the
four-drive
configuration, all diskette controller originated
lines
must
be terminated in
the
last
d~ive
of
the
daisy
chain.
When facing the front of the disk drive units,
drive
zero is on the left and drive one is
on
the
right
of
one
unit,
~hile
drive
two is on the left and drive three is on
the
right
of
the
other
unit.
Before
the
following
modifications are made,
both dual-drive units are identical.
1.
The
housings
from
both
dual-drive
units
must be
removed.
2.
In the dual-drive unit that is to contain drives
and
one,
the
Terminator
Network
(Motorola
51NW9626A01) should be removed from the
socket
on
printed
circuit board (pcb) for
d~ive
zero.
drive
one
pcb
socket
XA22
should
not
have
Terminator Network installed.
zero
PIN
XA22
The
the
3.
JPR
11
should
be
installed
in
the Jumper area of the
pcb for drive zero.
4.
JPR 9
should be installed
in
the Jumper
are~
of
the
pcb for drive one.
5.
The
housing
should
be
replaced on this dual-drive
unit and the drives marked as zero and one.
6.
On the
other dual-drive unit the
Terminator
Network
should
be
installed
in
socket XA22 of the pcb for
d~ive
three.
There should be no
Terminator
Network
installed on socket XA22 of the pcb ror drive two.
7.
,",PR
11
in
the. Jumper area of the pcb for drive two
should be removed (ir installed>.
JPR
8
should
be
install ed.
Page
01-05
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