HP 9122D, 9122S Service Manual

HP

91220/5

Disc Drives

Prin

ted: APRIL 1

Printed

Service

in

Manual

U.

s.

part

988

A.

Manual

number:

5957-6559

Edition

E0488

2

P.O.

rL:'

a!~

HEWLETT

Box

39,

HEWLETT PACKARD

-PACKARD

Boise,

Idaho

83707-0039

Notice

The

information

contained

in

':his

document

is

subject

to

change

without

notice.

HEWLETT-PACKARD

~lA](ES

NO

WARRANTY

OF

ANY

KIND

WITH

REGARD

TO

THIS

MATERIAL.

I;SCLUDI~G.

BliT

NOT

LI"lITED

TO,

THE

IMPLIED

"[ARRA!'iTIES

OF

~IERCHANTABILITY

A~D

lFITNESS

FOR A PARTICULAR

PURPOSE.

HEWLETT-PACKARD

shall

not

be liable for I!rrors

contained

herein

or

for

incidental

or

consequential

damages

in

connection

with

the

furnishing,

performance:

or

use

of

this

material.

HEWLETT-PACKARD

assumes

no

responsibility

for

the

use

or

reliability

of

its

software

on

equipment

that

is

not

furnished

by

HE'N'l.ETT-PACKARD.

This

document

contains

proprietary

information,

which

is

protected

by

copyright.

All

rights

are

reserved.

N'J

part

of

this

document

may

be

photocopied,

reproduced

or

translated

to

another

language

without

the

prior

written

consent

of

HEWLETT-PACKARD

Company.

Copyright @ 1984,

1988

by

HE\VLETT-PACKARD

b

Printing

History

New

editions

are

complete

revisions

of

the

manual.

Update

packages,

which

are

issued

between

editions,

contain

additional

and

replacement

pages

to

be

merged

into

the

manual

by

the

customer.

The

dates

on

the

title

page

change

only

when a new

edition

or a new

update

is published.

No

information

is

incor-

porated

into a reprinting

unless

it

appears

as a

prior

update;

the

edition

does

not

change

when

an

update

is

incorpora

ted.

A

software

code

may

be

printed

before

the

date;

this

indicates

the

version level of.

the

software

product

at

the

time

the

manual

or

update

was issued.

Many

product

updates

and

fixes do not,

require

manual

chang-

es

and,

conversely,

manual

corrections

may

be

done

without

accompanyi~gproduct

changes.

Therefore,

do

not

expect a one-to-one

correspondence

between

product

upd'ates

and

manual

updates.

Edition

1.

.......................................................

JUNE

1984

Edition 2 ........................................................

APRIL

1988

c

Contents

Cha

pter

1

Page

Genera)

Information

1-

1

Introduction

....................

'.' . . . . . . . . . . . . . . . .

..

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..

. . . . . . . . . . . . . .

..

1-1

Technical

Specifications

..........................................

'"

..

. . . . . . . . . . . . . .

.. . ..

...

. . . . .

..

. . . . .

.. ..

. . .

..

1-1

Power

Requirements

.....

: . . .

..

. . . . . . .

.. .. .. .. ..

. . . . . . . . . . . . . . . . . . . .

..

. .

..

. . . . . . . . . .

.. ..

. . . . . . . . .

..

. . . . .

... . ..

. . .

..

. . .

.. 1-2

Environmental

Specs

.............

: "

...... , ...............................................................................

1-

2

Equipment

Supplied

.........

, . .

..

. . . . . . . . . . . .

..

. .

..

. . . .

..

. . . . . . . . . . . . . . .

..

. . . . .

..

. . . . . . . . . . . . . .

..

. . .

..

. .

.. . ..

..

... 1-3

Unpacking

the

HP

9122D/S

Disc Drive

...................................................................

,

........

1-

3

Cleaning the Case. . . . . . . . . .

..

. .

..

.. . ..

. .

..

. . . .

.. .. . ..

..

. . .

..

. . . . . .

.. .. . ..

. . . .

..

. . .

..

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.. . ..

. . . . . . . . . . .

..

. . . . . .

..

. . . .

..

1 - 4

Chapter

2

Page

Installation

2-1

Configuring

Po'~er

......................................................................................................................

2-1

Setting

The Line Voltage Select Switch

..............................................................................

2-1

Fuses ...................... " .............

""

..................................................................... , ..........................

2-1

Power Cords

............................................................................................................................

, 2 - 1

Selecting the Device Address. . .

.. .. ..

. .

..

. .

.. . .. . ..

. . . . . .

..

. .

..

. . .

..

. .

..

. . . . .

..

. . . . . .

..

. . . .

.. ..

. . . . . . .

..

. .

..

.. ..

. .

.. .. ..

....

2 - 2

Disc

Compatibility

.................................................................................................................

2-3

Con troIs and Indica

tors.

.. ..

. . . . . .

.. . ..

. . .

..

. . . . . . . . . .

.. .. . ..

. . .

.. .. . .. .. . .. . .. .. . .. ..

. . . . . . . .

..

. . . . . . . . . . .

..

. . . . .

.. . ..

. . .

.. . ...

2 - 4

Media Moni

tor

...........

,.

. . .

..

. . . . . .

..

. .

..

. .

..

.. . ..

. .

.. ..

. .

..

. . . . .

..

. . . .

..

. . . . .

.. . .. ..

. . . . .

.. ..

. .

..

. . . . . . . .

..

. . . .

..

. . .

...

2 - 5

Power-On

Self test

.............................................................................................................

2-5

Write

Protect

Error

on

Initialization

....................................................................

2-5

Chapter

3

Page

Interface

Information

3-1

HP-IB

Interface

......................................................................................................

3-1

Instaiia tion. . . . . . . . . . . . . .

..

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..

. . . . . . . .

..

. . .

..

3 - 1

HP-IB

Interface Restrictions

............................................................

,

.............

'"

..........

3-1

Chapter

4

Trou

bleshooting

Page

4-1

Repair

Philosophy

....................................................................................................

4-1

Non

-Exchange

Assemblies

.........................................................................................

4-1

Exchange Assemblies

.........................................................................................

4-1

Controller

Electronics

and

Power Supply Assembly

..........................................................

4-

2

e

Contents

(continued)

5elftest

.........................

,

.........................................................................

4-4

Available Tests

........................................................................................

4-4

Selecting a 5elftest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..

4 - 5

Troubleshooting Procedures

..............................................................................

4-6

Fault

Isolation Procedures

.............................

'"

........... _ ...... , .......... _ ... _ ...... _ ...

4-6

Troubleshooting

Proc~~dures_

...

_ . _

.... _ ..

_ . _

..........................................................

4-6

Troubleshooting

Flowchart.

'.'

........................................................................

4-7

Using the

55/80

Exerciser

..

':

.......................................................................

4-11

DERRORS

...........................................................................................

4-11

Hints

on Using the 55/80 Exerciser

..................................................................

4-12

Adjustments

.................

'.'

................................

,

...... " .............. , .................

4·-14

PLL Adjustment

.....................................................................................

4·-14

Chapter

5

Assembly Access

Page

5-1

Introduction

...................

, . . . .

..

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..

5-1

9122D/5

Parts List

......................................................................................

5-1

Chapter

6

Product

History

Page

6-1

Introduction

................

"

.............................

"

.................................

,

...... " ..

6-1

5.ervice

Note

History. . . . . . . . . . . . . . . . . . . . . . . . . . . .

...

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..

6-1

f

iCHAPTER

I

GENERAL INFORMA

TION

I 1 I

Introduction

The

HP

9122

disc

drives

are

random

access

data

storage

devices.

The

HP

9122S

contains

a single 3

1/2-inch

-double-sided

drive

and

the

HP

9122D

contains

two 3 I/2-inch

double sided disc drives.

The

storage

capacity

ranges

from

630K

bytes

to

7 8SK

bytes

depending

on

the

sector

size beng used.

The

HP

9122

dics drives

have

beeR designed using

the

SUBSET

80

command

set.

Refer

to

the

Subset

80

Reference

Manua~,

PN

595.8-4129,

for a complete

description

of

this

command

set.

Technical

Specifications

Number

of

drives

Net Weight Height Depth Width

Interface

HP

Double-Density

Format Encoding Rotational

Speed

Bit

Density

@ 600

RPM

Track

Density

Tracks

per

Surface

Surfaces

used

per

disc

HP

9122S

HP

9122D

1

2

3.6kg

(8.5

lbs)

76

mm

(2.99

in.)

285

mm

(1

1 . 2

in.)

325

mm

(12.8

in.)

4.5

kg

(10

lbs)

76

mm

(2.99

285

mm

(

11

.2

325

mm

(12.8

HP-IB

MFM 600

RPM

Track

79

(Inside

track)

8717

BPI

135

tracks

per

inch

80

2

in.

)

in.

)

in.

)

1-

1

GENERAL

I!'FOR~IATION

1-2

Double-sided

Single-sided

Capacity

Bytes/Sector

256 512

1024

Sectors/Track

16

9

5

Tracks

80 80

80

Data Tr,acks

~\vailable

(----

154

------>

Access

Time

Track-to-Track

Seek

Maximum

Track-to-Track

See k (8 a t r a c k

~i

)

Average

Track-to-Track

Maximum

Rotational

Latency

Average

Rotational

Latency

Spindle

Motor

on

time

Maximum

Data

Access

Time

(Seek

plus

Latency

plus

Motor

on

time)

Average Data

Access

Time

15

ms/tri!:ck,

1242

ms

447

ms

100

ms

50

ms

400

ms

1.742

s

497

ms

NOTE

256

16 70

66

plus

42

ms

settling

The

HP

9122

disc

drives

spare

four

complete

tracks

and

reserve

two

tracks

for

system

use

with

double

sided

formats,

and

spare

four

tracks

in single sided

format.

Power

Requirements

86-125

volts

or

195-250

volts

@ 67

watts

RMS

(94

voltamps)

50-60

Hertz

Fuse lA, 250

for

115V

setting

.5A, 250

for

230V

setting

Operating

Limits Temperature HumiditY'

Altitude'

Non-operating

Limits

(Storage

and

Transit) Temperature Altitude

Environmental

Specs

10

to

40°C

(50

to

104°F)

20

to

80r.

with

maximum

wet

bulb

temperature

(non-condensing)

not

toe

x c e e d 29 ° C (850 F)

.

o

to

4572 m

(0

to

15,000

tt)

-40

to

60°C

(-40

to

140°F)

-304

to

15240 m

(-1000

to

50,000

tt)

GE~ERAL

I~FOR~fATION

NOTE

The

flexible disc in

the

HP

9122

disc drives

is

designed

for

operation

in

a

typical

office

environment.

Use

of

the

equipment

in

an

environment

containing

dirt,

dust,

or

cor-

rosive substances will cause

the

flexible disc

drives

and

medium

life

to

be

drastically

reduced.

Equipment

Supplied

The

following

equipment

is

supplied

with

each

HP

9122

disc drive.

Description

AC

Power Cord

Operator's

Manual

Disc Shipping

Disc

Quantity

HP

Part

Number

Dependent

on

location

09122-90020

N/A

1150-1786

A

package

of

ten

discs,

product

number

92192A,

is

available

from

DMK.

Unpacking

The

HP 91

220/S

Disc

Drive

The

disc

drive

was

carefully

inspected

before

shipment.

Remove

the

unit

from

the

shipping

carton

and

carefully

inspect

the

unit

for

any

physical

damage

that

may

have

occurred

during

shipment.

If

you

find

any

damage, you

should

immediately

notify

the

dealer

and

file a

claim

with

any

carriers

involved.

[CAUTION

I

The

disc

drive

is

a precision

instrument.

Mechanical

shock

can

misalign

the

read/write

head,

resulting

in

read

errors

and/or

damaged

discs

whether

the

disc

is

operating

or

not.

When

moving

the

disc

unit,

care

must

be

taken

to

prevent

ex-:

cessive shock.

Install

the

shipping

disc

(P

/N

1150-1786

for

half

height

drives

and

1150-1787

for

full

height

drives)

before

moving

it

to

another

location.

If

you

do

not

have

the

parts

metioned,

they

may

be

purchased

from

Hewlett

Packard.'

1-3

GE",ERAL

I\:FOR\1A

TIO~

Cleaning

the

Case

The

disc

drive

case

is

made

from a white

plastic

material

and

is

not

painted.

The

rear

panel

has a durable,

non-toxic

label. In

the

event

of

damage

to

the

case

finish,

consult

your

HP

Sales

Office

for

touchup

paints.

I

CAUTION

I

Chemical

spray-·on

cleaners

used

for

appbances

and

other

household

and

industrial

applications

may

damage

the

case

finish.

Do

not

use

detergents

that

contain

ammonia,

benzenes,.

chlorides,

or

abrasives.

Before

cleaning

the

case,

disconnect

the

power

cord

and

HP-IB

cables.

Make

sure

that

any

disc

is

removed

from

the

drives.

Dampen a clean,

soft,

lint

-free

cloth

in a solution

of

clean

water

and

mild

soap. \Vipe

the

soiled

areas

of

the

case,

making

sure

that

no

cleaning

solution

gets

inside

the

case.

For

cleaning

more

hea

vi-

ly soiled areas, a

solution

of

80%

clean

water

and

20%

isopropyl

alcohol

may

be used.

Dry

the

areas

that

had

cleaning

solution

applied

with

a.nother

clean,

soft,

lint-free

cloth. A non-abrasive

eraser

may

be used

to

remove

pen

and

pencil

marks.

1-4

ICHAPTER

I

Installa tion

121

Configuring

Power

Setting

The

Line

Voltage

Select

Switch

The

voltage select switch on the

rear

panel must

be

set to

the

nominal line voltage for the

area

in _which it

is operating. Figure

2-1

shows

the

setting

for

the

voltage select switch

for

the

various voltages.

[g]@

OR

11SV

Figure

2-1.

Line Voltage Select Switch

Fuses

The

part

numbers of the fuses used for

the

two voltage ranges

of

90-125

and

180-250

VAC

are

2110-0001

and

2110-0012

respectively.

Power

Cords

'~.A~f(~~~5

.

-'

..

Always disconnect

the

disc drive

from

any

AC line before

changing fuses.

The

power cord supplied by HP has polarities

matched

to

the

power sockets on

the

equipment. See Figure

2-

2

for

details on the power cords.

2-1

InstallathJn

lUI..

tor

either

2Ul

tor

eithit'

Selecting

Each

device switches your

controller

tions.

Prior the

power

cycle

The these

An

to

seIftest

is

the

switches

and

<:SA!1fJPf'OY9d

100

:')t

120

and

CSA

ar-proved

2GO

or

240

the

Devic~!

in

located

HP-IB

setting

and

applied

power

can

an

HP-IB

on

the

for

aJdressing

address

the

device

power-up

to

the

switch.

be

to

the

Addn~ss

set

desired

for

U84t

Vac

~Ition.

for

USE'

Vac,

ooenltion.

system

rear

panel

inf'Jrma

of 0 is

disc

to

set

address

sequen,;e

drive

anyone

device

in

the

United

in

the

Ur4ted

Figu.re 2 -

must

be

set

for

programming

tiCin

concerning

at

the

factory

switches,

includes a check

these

of

address.

switch

eight

turn

addresses,

States

2. A vaila

to a unique

settings

ot

of

in mass

before

the

disc

to

are

from 0 through

Am&rica

America

bIe

Power

device this

address. 5ee

storage

shipment.

drive

see

what

checked,

and

Canada

and

Canada

Cords.

address.

devices. See

AC

line

the

address

so

if

The

switch

you

7.

Refer

Wh

with

HP

the

OFF.

switch

change

equipment

91220/5

mass

storage

Figure

This

settings

the

to

Figure 2-3

set

contains

information

2 - 5

for

is

because are.

switches

switch

Each

be

when

address

of

loca-

part

of

time

sure

to

setting

2-2

Installa tion

Address

0

1

2

3

4

5

6

7

Disc

Compatibility

The

table in Figure 2

table

are

defined as follows:

Position

Left

Down Down Down Down

-4

of

4 small switches

-

Middle

Left

Down

Up

Up Up

Up

Figure

details the recommended usage of single-sided

Middle

Right

Down Down

Up

Down Down

Right

Down

Up

Down

Up

Down

Up

Down

Up

2-3.

Device Address Switch Settings

Up

and

double discs. Words used in

the

* "Exchange only" means

data

on a daily basis.

* "OK

Single-sided

Double-sided

single-sided

Double-sided double-sided

software

HP

Figure

and

II

means

HP

HP format

2-4.

programs

that

disc

media

Usage

with

the

in

of

that

the

disc should be used only

single-sided disc drives,

disc

may

Single-

be used

and

on

exchange

Double-sided

and

should not

a daily basis.

only

OK

Flexible Discs.

for

exchanging

be

used

2-3

Insta

lla t

ion

-..a-.rTT

AC

--1CeI

Power

==

-

9122

SWit-Ch--7

SelHest Indicate,r

(Viewed through

I!i

= :====

9122

Irttake

=E:=J=~

7

AC

POW?SWitCh 7

Self

test

Indicato

(View·ed

Lntake

Slel~)

---

/

r"

through

Slots)

Controls

Disc Access Light

for

Drive 0

Air

I . I

Seriol

. .

and

number

Indicators

Disc Eje t

for

Drive 0

prefix

2518A

I

Il

V

i

2

r=:ll

,/

/

/'

Disc Access Light

for

Drive 0

Air

ISenol

num~r

Disc

for

Drive 0

p~fix

2614A

Eje<

Button

and

below Disc

It

II

t

Button

and above I

for

Drive 1

/

Disc

for

Drive 1

Ac<::es3

/

If

for

Ac<::ess

Disc Eje t

for

Drive 1

Un,

ht

':I

V

t::ll

Disc

Ejec

Drive 1

Ught

Button

II

\

t

Butto

n

AC

INPUT

o

~~

10

O~o

L

--1~~O@fl

LU

O

o O[_,.:J

~

I

[IJ]]

0

~-'+'----~-------------l~!-i

HP-IB

Figure 2-5.

IALL

serial

Controls

number

and

Indicators.

prefixes

I

AC

SELECT

FUSE

SW

2-4

ADDRESS/

TEST

SELECT

Installa tion

~ledia

~lonitor

Through a feature

called

Tvfedia

l\fonitor,

the

disc drive

automatically

monitors

the

cumulative

use

of

each

individual

disc. When

the

usage

of

a disc

is

approaching

a level

at

which

there

is

a risk

of

loss

of

data

through

normal disc wear, the disc access

light

on

the

front

panel

blinks

and

a clicking sound

is

heard.

Commands

will still

be

performed

by

the

computer.

However,

after a command

has been performed, the disc

drive

immediately resumes

the

warning

indication.

When

the

Media

Monitor

warning

occurs,

immediately

copy

your

disc. If you

continue

to use this disc,

the

disc drive will

eventually

automatically

write

protect

the

disc.

After

that

time, you will only be able to

read

data

from

the

disc

or

copy

the

disc.

Power-on

Self test

A

power-on

selftest

is

performed

automatically

when

you

turn

on

the

disc drive. The selftest first checks

the

HP-IB, FDC, RAM,

and

ROM, followed by a

WRITE/READ

test (if

an

initialized, non

write-protected

disc

is

inserted).

When

a WRITE test

is

'performed,

it

is

done

on

a reserved

area

of

the disc and no user

data

is

at

risk. The Selftest

LED

acts as a

pass/fail

indicator

and

is

visible

through

the

air

intake

slots.

When

an

initialized,

unprotected

disc

is

inserted; read, write,

and

motor-speed

tests are performed. A

write-

protected

disc will

not

allow

the

read

and

write

tests to run.

If

the

disc access

light

stays on

after

the

nor-

mal

testing time,

an

error

within

the

disc drive has been detected.

If

an

error

occurs,

refer

to

Chapter 4 for

troubleshooting procedures.

Write

Protect

Error

on

Initialization

A

motor

speed check

is

performed

before

initialization

is

performed.

If

the

motor

speed

is

on

either

side

of

the

tolerance

allowed, a

Write

Protect

Error

is

generated

and

the

disc

cannot

be initialized.

At

this point,

insert

another

disc.

If a write

protect

error

is

generated

again,

refer

to

Chapter

4 for troubleshooting

procedures.

If

no

write

protect

error

occurs

with

the

second disc,

then

the

first

disc used

is

bad

and

should

be discarded.

2-5

ICHAPTER

I

Interface

Information

I 3 I

HP

-18

Interface

Installation

The

HP

91220/5

is

connected

to

the

computer

via

the

Hewlett-Packard

Interface

Bus (HP-IB).

Refer

to

Figure

3-1

for

a list

of

the

HP-IB

interface

c~bles

used

with

HP

computers.

Length

Accessory

Number

1 metre

1

0833

A

2 metres

10833B

4 metres

10833C

0.5 metres

10833D

Figure

3-1.

HP-IB

Interface

Cables

All

the

cables listed above

are

completely

shielded

to

eliminate

Radio

Frequency

Interference

(RFI).

The

use

of

unshielded

cables will cause

increased

RFI

in

the

area

of

operation.

I

CAUTION

I

Never

turn

the

disc

drive

off

or

remove

the

disc

from

the

drive

when

the

disc access

light

is

on;

doing

so

can

cause loss

of

data.

HP-IB

Interface

Restrictions

1.

All

the

AC

line

switches

(of

the

host system)

must

be

turned

"OFF"

when

connecting

(and disconnecting)

devices

to

the

system.

2.

The

total

length

of

cable

permitted

in

one

bus

system

must

be less

than

or

equal

to

two

metres

times

the

number

of

devices

connected

together

(the

interface

card

is

considered

one

device).

3.

The

total

length

of

the

cable

must

not

exceed

20

metres.

For

example, a system

containing

six devices

can

be

connected

together

with

cables

that

have a total

length

less

than

or

equal

to 12

metres

(six

devices x

2m/device

= 12 metres).

The

individual

lengths

of

cable

may

be

distributed

in

any

manner

desired

as long as

the

total

length

does

not

exceed

the

allowed

maximum.

If

more

than

10 devices

are

to

3-1

Interface

Information

be

connected

together,

cables

shorter

than

two

metres

must

be used

between

some

of

the

devices

to

keep

the

total

cable

length

less

than

20

metres.

4.

The

max:imum

number

of

devices

that

can

be

connected

together

in a

one-bus

system

is

15.

There

are

no

restrictions

to

the

way

cables

may

be

connected

together;

however,

it

is

recommended

that

no

more

than

four

piggyback

conneGtors be

stacked

together

on

one

device.

The

resulting

structure

could

exert

enough

force

on

thf~

connector

mounting

to

damage

it.

3-2

ICHAPTERi

~T_r_o_ub_l_e_s_ho_o_t_in

__

g

____________

~1

4 I

Repair

Philosophy

The

HP 9

12

20/S

are serviced on the exchange program.

Part

Number

09123-61611 09121-61611 09121-68511 09121-61612 09122-68802

2110-0001 2110-0012

09122-69511 09122-69514 09114-69511 09123-69101

Non-Exchange

Assemblies

Description

SIN

Prefix

2614A

and

above

-

RIBBON

CABLE

ASSEMBLY

X

RIBBON

CABLE

ASSEMBLY

FAN

ASSEMBLY

X

DC

POWER

CABLE

LINE

FILTER

ASSEMBLY

X

FUSE

1A

250

VOLT

X

FUSE

1/2A

250

'VOLT

X

Exchange

Assemblies

Controller

PCA

Controller

PCA

X

3

1/2-inch

disc

drive

3

1/2-inch

disc

drive

X

SIN

Prefix

2518A

and below

X X X

X

X X

X

4-1

HP 9122D, 9122S Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual