Zenith data systems Z-89-37 User manual

Installation Instructions

for the

~Nnw

data

systems

DOUBLE-DENSITY DISK CONTROLLER

Model Z-89-37

ZENITH DATA SYSTEMS ZENITH DATA SYSTEMS

Printed in the United Stales of America SAINT JOSEPH, MICHIGAN 49085

Page 2

INTRODUCTION

The

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

faces

the

Z-89

Computer

with

floppy

disks.*

The

Con-

troller

will

read

and

write

as follows to

drives

using

soft-sectored disks.

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

96 tracks

per

inch

80 tracks

per

side

(160 tracks total)

Single

double

density

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

48 tracks

per

inch

40 tracks

Single

double

density

Required software is:

HDOS

version

2.0

(updated

or higher)

CP/M

version

2.2.03 (or higher)

NOTE:

your

Computer

has

a backplate

the

one

shown

below,

then

you

must

also install

the

H-88-6

Backplate Modification Kit before

you

install

this

product.

HOLE

MAY

0 0

-'.----r--

MAY

NOT

I I

PRESENT

____

0 00

]I I

IBACKPLATE I

*cassette operation is not supported.

Page 3

PARTS LIST

The

key

numbers

correspond to

the

numbers

the

"PartsPictorial" (IllustrationBooklet, Page 1). Return

any

part

that

packed

in an

individual

envelope,

with

the

part

number

on it,

back

into

its

envelope

until

that

part

is called for in a step. Do

not

throw

away

any

packing material

until

you

account

for all

the

parts.

KEY HEATH OTY. DESCRIPTION

No. Part No.

INTEGRATED CIRCUITS - PLUGS

CIRCUIT

Compo

No.

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 letters in BOLD print.Disregard

any other numbers or letters.)

3. Part number and type number.

4. Part number witha type numberother 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 442-651 1 UF78HOSSC or MC78TOSIC U101

A2 444-61 1 1/0 decoder ROM

IC'

U550

A2 444-83 1

74S1881C'

U516

A2 444-84 1

27321C'

U518

A3 100-1817 1 20-pin plug w/jumper

A4 432-1168 2 Programming plug

'TheseIC's are only availablefromHeath Companyand must be ordered using

the Heath Part Numbers, not the Description numbers.

KEY HEATH OTY. DESCRIPTION

No. Part No.

OTHER PARTS

81 134-1159

82 100-1816 '

B3 6-472-12

B4 346-1

352-31

B6 215-658

87 206-1394

B8 250-1319

89 252-2

810 254-9

811 134-1158

812

134-1074

813 134-1163

703-73

890-156

890·157

595-2696

3" wire with connectors

4700 n resistor (yel-viol-red-

gld) with connectors

4700 n resistor (yel-viol-red-

gld)

1" Sleeving

1 Thermal compound

3 Heat sink

1 Ground plate

2 4-40 x

9/16"

black phillips

head screw

2 4-40 nut

lockwasher

1 16-conductor cable with plugs

1 Floppy cable

1 Extension cable

1 Diskette holder

1 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.)

CIRCUIT

Compo

No.

Page 4

COMPUTER TOP REMOVAL

WARNING:

Boxed-In

areas

show

PUSH

BACK

PICTORIAL 1-1

TILT

BACK

Sli

TOWARD

FRONT

INSET

hazardous

voltage

locations.

---~~

.->:

I I •

._ I

'--~

Whenever

you

need

remove

the

cabinet top:

• Refer to

the

inset

drawing

on Pictorial

1-1,

insert

the

blade

of a

small

screwdriver

into

the

notch

the

latch

plate,

and

then

slide

the

latch

plate

shown

the

inset

draw-

ings.

• Likewise,

open

the

latch

plate

the

other

side

the

cabinet top.

•

WARNING:

When

the

line

cord

is con-

nected

to an AC outlet,

hazardous

voltages

can

present

inside

your

Computer. See

Pictorial

1-1.

• Carefully tilt

the

cabinet

top

back. NOTE:

The

hinges

are

designed

so you can easily

remove

the

cabinet

top

once

you

have

opened

it completely.

•

Unplug

the

fan.

Reverse

this

procedure

to close

and

lock

the

cabinet

top back on

the

Computer.

Page

INSTALLATION

()

Turn

off

the

Computer,

unplug

the

line

cord,

and

remove

the

cabinet top.

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

the

following steps.

( ) Remove

the

two screws

that

hold

the

CPU logic circuit board

place.

(~)

( ) Disconnect

the

cables from

the

circuit board, lift

the

circuit board up out of

the

Computer,

and

set

the

board

aside

temporarily.

(If

a serial I/O board is installed, also

unplug

its cables.)

POWER

SUPPLY

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

and

examine

your

computer

to see if

there areheat sinks at

Ul0l,

Ul02,

and

Ul03.

heat sinks are present,

and

Ul0l

is 78H05

or 78T05 (#442-651),

you

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

perform

the

following steps.

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

the

following steps.

( ) Disconnect

the

cables from

the

power

supply

circuit board.

Then

remove

the

four corner

screws

and

set

the

circuit board aside.

( ) Remove

the

four

hex

spacers

and

lift

the

power

supply

heat

sink

out

the

computer. Do

not

disconnect any wires

that

are soldered to

the

heat sink assembly.

Page 6

•

REGULATOR

HEATSINK

Detail 2-3A

Refer to Pictorial 2-3 (IllustrationBooklet,

Page

and

De'tail 2-3A for

the

following steps.

( ) Remove

the

two

screws

that

hold

IC socket

UI01.

Then

remove

and

discard

the

IC,

and

set

the

screws

aside.

WARNING: You

will

using

Dow

Corning

340

thermal

compound

the

following steps.

Although

this

compound

not

caustic, it

may

cause

temporary

discomfort if it gets

into

your

eyes.

this

happens,

rinse

your

eyes

with

warm

water.

the

compound

gets on

your

clothing,

may

require

professional

cleaning,

handle

the

compound

carefully.

This

compound

contains

zinc

oxides,

Si0

and

slight

traces of CO2 ,

( ) Locate

the

thermal

compound

pod

and

make

small

slit

one

side.

( )

Spread

small

amount

thermal

compound

onto

the

UA78H05SC or MC78T05

integrated

circuit

(#442-651).

Squeeze

the

pod

remove

the

compound.

( )

Spread

small

amount

thermal

compound

the

back of

the

regulator

heat

sink.

( )

UI0l:

Refer to Detail 2-3A

and

note

the

wide

space

the

Ie.

Install

the

socket

and

the

regulator

heat

sink

UI01.

sure

the

socket is

properly

seated

its

mounting

holes

the

heat

sink,

and

then

install

the

two

screws

you

removed

earlier.

NOTE:

your

Computer

already

has

heat

sinks

UI02

and

UI03,

proceed

"Power

Supply

Installa-

tion."

your

Computer

does

not

have

heat

sinks

these

locations,

proceed

with

the

following steps.

( )

Remount

the

regulator

UI02.

Use a reg-

ulator

heat

sink

and

thermal

compound

as be-

fore.

( )

Remount

the

regulator

UI03.

Use

a reg-

ulator

heat

sink

and

thermal

compound

as be-

fore.

Page 7

POWER SUPPLY INSTALLATION

(/J

U518: Remove

the

IC at U518.

Then

install

the

2732 IC (#444-84) at U518.

(If

your

Computer

Again

refer to Pictorial 2-2 for

the

following steps.

has

the

16K

adapter

circuit

board

installed,

temporarily

remove

it if necessary.)

This

part

( )

Remount

the

power

supply

heat

sink

with

the

programmed

PROM.

The

removed

part

will

four

6-32

hex

spacers

you

removed

earlier.

not

needed

further.

( )

Remount

the

power

supply

circuit

board

with

(/)

U550: Remove

and

discard

the

Ie.

Then

install

the

four

6-32 x 1/4"

screws

that

you

removed

the

I/O

decoder

ROM IC (#444-61) at U550.

The

earlier. NOTE:

your

unit

had

lockwasher

removed

part

will

not

needed

further.

installed

at A,

you

must

reinstall

it at A as

shown.

(-r

Remove

and

set

aside

the

IC's at U558

and

U557.

you

have

a voltmeter,

make

the

following tests.

Otherwise,

proceed

"CPU

Circuit

Board."

(NOTE:

you

ever

remove

the

2-89-37,

then

these

IC's

must

be reinstalled.)

( )

Connect

the

common

voltmeter

lead

the

heat

sink

shown.

NOTE:

you

not

obtain

the

proper

results

the

IIIll

following

steps,

immediately

unplug

the

line

cord

and

correct

the

problem

before

you

proceed.

1~~~~r·1r

PI. I Pl. I POI I

I PI•

Plug

the

line

cord

and

turn

the

Computer.

Measure

TPl.

The

voltage

should

+4.5

+5.5

volts

De.

( )

Measure

TP2.

The

voltage

should

+4.5

+5.5

volts

DC.

( )

Measure

TP3.

The

voltage

should

+10.8

+13.2

volts

De.

( )

Turn

off

the

Computer

and

unplug

the

line

cord.

Then

disconnect

the

voltmeter

and

set it

aside.

CPU CIRCUIT BOARD

Refer to

Pictorials

2-2

and

2-3 for

the

following step.

( )

Reconnect

the

four cable

plugs

the

power

supply

circuit

board.

(Also

see

Pictorial 2-3.)

Again

refer to Pictorial 2-1 for

the

following steps.

( )

/U516:

Referto

inset

drawing

on Pictorial 2-1

and

remove

the

IC at U516.

Then

refer to Detail

2-1A

and

install

the

745188

IC (#444-83) at

U516.

This

part

is a

programmed

PROM,

the

Detail

2·1A

removed

part

will

not

needed

further.

rc LEADS

INDEX

MARK

Page 8

H-88-1

fLOPPY

DISK

I/O

CIRCUIT

I BOARD I

PICTORIAL 2-5

Page 9

Refer to Pictorial 2-4 (Illustration Booklet,

Page

4) for

the

following steps.

( )

the

left

side

ofthe

CPU

circuit

board

is a

row

of four

programming

plugs

shown

the

Pictorial. Remove

and

set

aside

the

top

plug

(it

will

not

be used).

Then

reposition

the

middle

two

plugs

from 0 to 1.

The

bottom

plug

will

not

changed.

( )

Plug

one

end

the

wire

with

connectors

onto

the

top

plug

near

U518. (Be

sure

the

con-

nector

plugs

onto

all

three

pins

the

plug.)

Plug

the

other

end

the

wire

onto

plug

P508.

sure

the

center

hole

the

connector

is con-

nected

14 of

the

plug.

(The

plug

num-

bered

from

top

to bottom.)

NOTE:

The

20-pin

plug

with

jumper

has

one

corner

cut

off.

This

indicates

1 of

the

plug.

( L) U558:

Install

the

20-pin

plug

with

jumper

U558. Be

sure

position

the

plug

with

the

end

properly.

( )

Plug

the

indicated

end

the

16-conductor

cable

with

connectors

into

socket

U557. Be

sure

position

the

end

(marked

with

a color

dot

or arrow)

oftheplug

into

the

end

the

socket.

you

NOT

intend

use

the

H-88-1

floppy

disk

I/O

circuit

board

your

system

(needed

for

transferring

programs

and

data

from

single-density,

hard-sectored

disks to

double-density,

soft-sectored disks),

proceed

with

the

following

steps.

you

intend

use

the

H-88-1

floppy

disk

I/O,

proceed

to "CPU

Installation"

on Page 10.

( ) Refer to Pictorial 2-5

and

remove

the

accessory

mounting

bracket

and

the

H-88-1

circuit

board.

you

are

going

use

the:

• Z-89-47 interface

circuit

board,

proceed

"Z-89-47,"

• Z-89-67 interface

circuit

board,

proceed

"Z-89-67."

Otherwise,

proceed

as follows:

( ) Install

the

4700 n

resistor

with

connectors

onto

plug

P512. Be

sure

the

center

hole

one

con-

nector

plugs

onto

and

the

center

hole

the

other

connector

plugs

onto

12.

Proceed to "CPU Installation."

Z-89-47

For a

system

to operate

properly

with

the

Z-89-37,

the

Z-89-47 I/O

board

should

installed

plugs

P506

and

P512. However, before

the

Z-89-47

will

operate

properly

when

plugged

into

plugs

P506

and

P512, a

resistor

must

added

the

Z-89-47

circuit

board.

Return

the

Z-89-47

circuit

board

(#85-2442) to

Heath

Company

or a

Zenith

Data

System

Service

Center

for

this

modification.

you

want

make

the

modifica-

tion

yourself,

use

the

4700

1/4-watt

resistor

(yellow-violet-red),

slide

the

length

of sleeving over

the

resistor (see

the

inset

drawing),

and

solder

the

resistor

between

pins

and

12 of

plug

P2 on

the

foil

side (not

the

component

side) of

the

Z-89-47

circuit

board

shown

Pictorial 2-6 (Illustration Booklet,

Page 5).

( ) Refer to Detail 2-6A

and

set

the

170/174 pro-

graming

plug

tv 174.

( ) Install

the

Z-89-47

board

plugs

P506

and

P512.

See

Pictorial 2-7 (Illustration Booklet,

Page

6).

NOTE:

you

ever

move

this

board

another

set

plugs, be

sure

remove

the

4700 n

resistor

that

you

just installed.

Proceed to "CPU

Installation."

Z-89-67

( ) Refer to Pictorial 2-8 (Illustration Booklet, Page

and

reposition

programming

plugs

and

the

indicated

positions

the

Z-89-67 I/O

board.

( ) Install

the

Z-89-67

board

plugs

P506

and

P512. See Pictorial 2-7 (Illustration Booklet,

Page 6).

Page 10

CPU INSTALLATION

( )

Again

refer

Pictorials

2-1

and

2-9,

and

reinstall

the

CPU logic

circuit

board.

Secure

place

with

its

two

screws

and

reconnect

the

cables as

shown.

(Be

sure

reconnect

P513 in

the

bottom

right-hand

corner

the

board.)

CONTROLLER

PROGRAMMING

Refer to Pictorial 2-10 for

the

following

steps.

Locate

plug

positions

through

and,

necessary,

move

the

programming

plug

to posi-

tion

J6.

This

plug

selects

which

drive

is con-

nected

plug

P3. (Drive

numbers

are

deter-

mined

how

the

drive

programming

plugs

are

cut. See Pictorials 2-13

and

2-14,

Illustration

Booklet, Page 8). J4 = DS1, J5 = DS2, J6= DS3,

and

J7 = DS4

(presently

not

supported).

r Be

sure

plugs

and

J2 are at 170.

(-.-j

Position

plug

J3 at 1

unless

any

your

drives

are 48TPI

Wanco

Model

82 drives.".

CPULOGIC

CIRCUIT

BOARD

DCE

1340-347

, I

, '

I : : SERIAL

INTERFACE

. I

CIRCUIT

BOARD

: i

I !! <

lEI

PICTORIAL 2-9

*All drives connected to a single Z-89-37 should be of the sametype.

If they are not, the precompensation will be wrong for at least one of

the drives. This will resultin reduceddataintegrityand poor reliability.

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