Zenith Z-89-37 Installation Instructions Manual

Installation Instructions

for the

~Nnw

data

systems

DOUBLE-DENSITY DISK CONTROLLER

Model Z-89-37

Copyright © 1981

ZENITH DATA SYSTEMS

All Rights Reserved

Printed in the United Stales of America

ZENITH DATA SYSTEMS

SAINT JOSEPH, MICHIGAN 49085

595-2707-01

Page 2

INTRODUCTION

The

Z-89-37 Double-Density Disk Controller inter-

the

Z-89

faces
troller
soft-sectored disks.

Double-Sided (H-17-4 drives):

Single-Sided (H-17-1 drives):

will

96 tracks
80 tracks
Single

48 tracks
40 tracks
Single

Computer

read

and

per
per

or

double

per

or

double

with

floppy

write

as follows to

inch
side

(160 tracks total)

density

inch

density

disks.*

drives

The

Con-

using

Required software is:

HDOS

CP/M

NOTE:
shown
Backplate Modification Kit before
product.

version

or

version

If

your

below,

2.0

(updated

2.2.03 (or higher)

Computer

then

you

has

must

or higher)

a backplate

also install

you

like

the

the

install

one

H-88-6

this

0 0

0

*cassette operation is not supported.

0\
0\

]0

0

]

IBACKPLATE I

,----'.----r--

I I
I

I

L

____

I

I

J

0

HOLE

MAY

MAY

NOT

PRESENT

OR

BE

PARTS LIST

The

key

numbers

"Parts Pictorial" (Illustration Booklet, Page 1). Return
any

part

that

with

the

part

until

that

part

away

any

packing material

the

parts.

correspond to

is

packed

number

in an

on it,

the

numbers

individual

back

into

is called for in a step. Do

until

you

account

envelope,

its

envelope

not

on

the

throw
for all

Page 3

KEY HEATH OTY. DESCRIPTION
No. Part No.

CIRCUIT
Compo

No.

INTEGRATED CIRCUITS - PLUGS

NOTE: Integrated circuits are marked for identification in one

of the following four ways:

1. Part number

2. Type number. (On integrated circuits, use only
those numbersand lettersin
any other numbers or letters.)

3. Part number and type number.

4. Part number with a type number other than the one
listed.

CAUTION: Some IC's are protected against damage caused
by static electricity. Do NOT remove the IC's from their foam
pads until you are instructed to do so in a step.

A1

A2
A2
A2
A3

A4

442-651
444-61
444-83
444-84
100-1817
432-1168

1

UF78HOSSC or MC78TOSIC U101

1

1/0 decoder ROM

1

74S1881C'

1

27321C'

1

20-pin plug w/jumper

2

Programming plug

BOLD print. Disregard

IC'

U550
U516
U518

KEY HEATH OTY. DESCRIPTION
No. Part No.

OTHER PARTS

81 134-1159

100-1816 '

82

B3 6-472-12

B4

346-1

85

352-31

B6 215-658

87 206-1394

250-1319

B8

252-2

89
810 254-9
811 134-1158
812

134-1074

813

134-1163
703-73
890-156

890·157

595-2696

3" wire with connectors

n resistor (yel-viol-red-

4700
gld) with connectors

n resistor (yel-viol-red-

4700
gld)

1"

Sleeving

1

Thermal compound

3

Heat sink

1

Ground plate

2

2 4-40 nut
2
1
1
1
1
1

9/16"

4-40 x
head screw

#4

lockwasher
16-conductor cable with plugs
Floppy cable
Extension cable
Diskette holder
Diagnostic diskette
(hard sectored)
Diagnostic diskette

(soft sectored)
Controller circuit board
ROM Listing Manual
Operation Manual (See front
page for part number.)
Installation Instructions

(See front page for part
number.)

black phillips

CIRCUIT
Compo

No.

'TheseIC's are only available fromHeath Company and must be ordered using

the Heath Part Numbers, not the Description numbers.

Page 4

COMPUTER TOP REMOVAL

~

WARNING:

hazardous

---~~

.->:

I I •

._ I

'--~

i

I
I

~

Boxed-In

voltage

BACK

areas

locations.

TILT

show

PUSH

BACK

Whenever

• Refer to

• Likewise,

•

you

need

the

insert

the

blade

the

notch

in

the

latch

plate

ings.

open

side

of

the

WARNING:

nected
can
Pictorial

to an AC outlet,

be

present

1-1.

~

to

remove

inset

drawing

of a

small

the

latch

as

shown

the

latch

cabinet top.

When

the

inside

the

cabinet top:

on Pictorial

screwdriver

plate,

and

in

the

plate

line

hazardous

your

Computer. See

Sli

TOWARD

then

inset

on

the

cord

voltages

DE

FRONT

INSET

1-1,

into

slide

draw-

other

is con-

• Carefully tilt
The
remove
opened

Unplug

•

Reverse
top back on

this

PICTORIAL 1-1

the

hinges

procedure

the

are

the

cabinet

it completely.

the

fan.

Computer.

cabinet

designed

to close

top

back. NOTE:

so you can easily

top

once

you

and

lock

the

have

cabinet

INSTALLATION

()

Turn

off

the

Computer,

Refer to Pictorial 2-1 (Illustration Booklet, Page 2) for

the

( ) Remove

(~)

( ) Disconnect

Computer,
unplug

two screws

and

its cables.)

the

cables from

set

unplug

that

hold

the

board

the

line

cord,

and

the

CPU logic circuit board

the

circuit board, lift

aside

temporarily.

remove

the

the

cabinet top.

following steps.

in

place.

the

circuit board up out of

(If

a serial I/O board is installed, also

the

Page

e

POWER

( ) Refer to Pictorial 2-3 (Illustration Booklet, Page 3)

Refer to Pictorial 2-2 (Illustration Booklet, Page

( ) Disconnect

( ) Remove

SUPPLY

there are heat sinks at
or 78T05 (#442-651),

the

perform

screws

not

disconnect any wires

following steps.

the

cables from

and

set

the

the

four

hex

circuit board aside.

Ul0l,

Ul02,

and

Ul03. Ifheat sinks are present,

you

may proceed to "CPU Circuit Board" on Page 7. Otherwise,

3) for

the

the

spacers

that

power

and

are soldered to

lift

supply

the

power

circuit board.

supply

the

and

examine

following steps.

heat

heat sink assembly.

Then

sink

your

remove

out

of

computer

and

Ul0l

the

four corner

the

computer. Do

to see if

is 78H05