Mitsubishi M4853 Manuel d'installation et d'exploitation

MITSOBISBI

l/4-

FLEXIBLE

DISK

DRIVE

MODEL

M4853

OEM

MANUAL

TJ2-G30213 A

9/83

_ _

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M4853·1 flu."ble

Disk

Driye

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ELECTRIC

1.1

1.2

1.2.1

1.2.2

1.2.3

1.2."

1.2.5

2.2

2.3

2.11

2.5

3.1

3.2

3.3

3.11

3.5

3.6

3.7

3.8

II.

11.1

".1.1

".1.2

".1.3

".1."

".2

...

2.1

""85"-1S

OEM

MANUAL

TABLE

CONTENIS

INTRODUCTION

•••.•••••••••••••••••••••••••

1_1

General

Descr1ption

••••••••••••••••••••••

1-2

Specit1cations

•••••••••••••••••••••••••••

1-3

Pertormance

Specs

••••••••••••••••••••••

1-3

Functional

Specs

•••••••••••••••••••••••

Pbyslcal

Specs

•••••••••••••••••••••••••

1-5

Environment.l

Specs

••••••••••••••••••••

1-6

Reliability

Specs

••••••••••••••••••••••

1-7

GE.EIAL

OPEIATIO

•••••••••••••••••••••••••

2-1

Srstem

Operat1on

•••••••••••••••••••••••••

2-1

Electronlcs

••••••••••••••••••••••••••••••

2-1

Rotation

Hecbanlsm

•••••••••••••••••••••••

2-3

Positioning

Hechanlsm

••••••••••••••••••••

2-3

le.d/Wrlte

Heads

•••••••••••••••••••••••••

2-3

FUNCTIONAL

OPERATION

•••••••••••••••••••••

3-1

Pover-On

Sequenc1ng

••••••••••••••••••••••

3-1

Drive

Selectlon

••••••••••••••••••••••••••

3-1

Positioning

Operatlon

••••••••••••••••••••

3-1

Side

Selectlon

•••••••••••••••••••••••••••

3-2

lead

Operatlons

••••••••••••••••••••••••••

3-2

Write

Operatlons

•••••••••••••••••••••••••

3-2

Dlsk

Insertion

•••••••••••••••••••••••••••

3-3

Disk

Removal

•••••••••••••••••••••••••••••

3-3

ELECTRICAL

INTERFACE

•••••••••••••••••••••

"-l

Signal

Intert.ce

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

-3

C.bling

Method

.nd

Input

Termlnations

....

-3

Llne

Drives

and

Recelvers

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

-3

Input

Slgnal

L1nes

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

-5

Output

Slgnal

L1nes

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

-11

Power

Intert.ce

••••••••••

••••••••••••

...

-1

Power

•••••••••••••••.•••••••••••••••

--,,,

111

5.1

5.2

5.3

5.&1

6.1

6.2

8.1

S.1.1

8.1.2

8.1.3

8.2

8.3

8.3.1

8.3.2

9.1

9.2

PHYSICAL

INTERFACE

•••••••••••••••••••••••

5-1

S1gnal

Connector

•••••••••••••••••••••••••

5-1

Power

Connector

••••••••••

••••••••••••

5-3

Frame Ground

Connector

••••••.••••••••••••

5-~

Interface

Connector

Locat1on

•••••••

•••••

5-5

PHYSICAL

SPECIFICATIONS

••••••••.•••••••••

6-1

Installat10n

Or1entat1on

•••••••••••••••••

6-1

Dr1ve D1mensions

•••••••••••••••••••••••••

6-1

USER

OPT10IS

•••••••••••••••••••••••••••••

7-1

.Drive

Select

Options

•••••••••••••••••••••

7-1

Motor

Control

Options

••••••••••••.••••••••

7-2

Ready

Output

Opt1ons

•••••••••••••••••••••

T-5

Head

Load Opt1ons

••••••••••••••••••••••••

7-8

LED

Opt1ons

•••••••••••••••••••••••••••••

7~'O

Term1nat1ons

••••••••••••••••••••••••••••

7-12

Frame Ground

•••••••••••••••••••

••••••••

7-12

Opt1ons

Summary

•••••••

•••••••••••••••••

7-13

RECORDING

FORHAT

••••••••••••.•••••••••••••

8-1

Record1ng Encod1ng

•••••••••••••••••••••••

8-1

•••••••••••••••••••••••••••••••••••••

8-2

MFH

••••••••••••••••••••••••••••••••••••

8-3

HHFH

•••••••••••••••••••••••••••••••••••

8-'1

Recommended

Formatt1ng

•••••••••••••••••••

8-5

Error

Detection

and

Correct1on

••••••••••

8.;.12

Write

Errors

••••••••••••••••••••••••••

8-12

Read

Er~ors

•••••••••••••••••••••••••••

8-12

SHIPPING

•••••••••••••••••••••.•.••••••••.

9-1

Shipping

Damage

••••••••••••••••••••••••••

9-1

Re-Sh

1pp1nl

•••••••••••••.•••••••••..•...

•·9-1

, . \

\ \

Li$t

figyrc$

2-1

H~85q-1S

Functional

Diagram

3-1 Comparison

and

HFH

Encoding

3-2

Read/Write

Drive

Compatibility

q-1 Cab11nt Hethod

q-2

Recommended

L1ne

Driver

and

Receiver

C1rcuit

4-3

Dr1ve

Select

Timing

q-~

Side

Select

Timing

q-5

Step

T1ming

4-7

Index

T1ming

4-B

Track

T1m1ng

q-9

Bas1c Ready T1ming

5-1

Connector

Dimensions and

P1n

Numbers

5-2

Connector

5-3

Connector

Locat1on D1agram

6-1

Disk

Dr1ve

Installation

Directions

6~2

Dimensions

MQB5Q-1S

7-1

In-Use

Latch

Tim1ng

7-2

Current

Ready

(I)

Timing

7-3

Held Ready

(II)

T1m1ng

7-q

D1sk Change

(Drive

Select

Reset)

Timing

7-5

Disk Change

(Step

Pulse

Reset)

Timing

7-6

Head Load Opt1ons Schemat1c

7-7

Fr~me

Croud

Circu1t

7-B

PCB

Option

Locat1ons

8-1

Wr1te

T1m1ng

B-2

Read

T1m1ng

8-3

MFH

Wr1te

T1m1ng

B-q

MYH

Read Timing

B-5

HKFH

Write

T1ming

8-6

HHFH

Read T1ming

8-7

ISO-7Q87/2

style,

Track

DO,

Side

0 (FH)

8-8

ISO-7Q87/2

style,

All

other

tracks

(MFH)

8-9

512

Bytes/Sector,

Standard

Format

8-10

1,02Q

Bytes/Sector,

Standard

Format

8-11 256

Bytes/Sector,

S1mplif1ed

For~at

8-12

512

Bytes/Sector,

~illp11f1ed

Forn'at

8-13

256

Bytes/Sector,

IEC

765A

Format

8-1q

512

Bytes/Sector,

IEC 765A Format

8-15

1,02-

Bytes/Sector,

IEC

765A

Format

9-1 Head

Protection

sheet

Installation

9-2

Bag and Board Assembly

9-3

Ten-Pack

Carton

Assellbly

9-~

S1ngle-Pack

Carton

Asse~bly

List

Tables

1-1

Performance

Specifications

1-2

Funct10nal

Specifications

1-3

Physical

Specifications

1-4

Environmental

Specifications

1-5

Reliability

Specifications

4-1

Power

Connector

Arrangement

_-2

Signal

Connector

Arrangement

--3

Power

Specifications

5-1

Connector

for

TWisted-Pair

Cable

(P1)

5-2

Connector

for

Flat

Cable

(P1)

5-3

Power

Connectors

'1-1

Option

Summary

INTRODUCTION

The K1tsub1sh1

K~85~-1S

high-performance,

double-sided,

double

bit

and

double

track

~ens~ty

flexible

disk

drive

using

high-density

5.25-inch

d1skette,

that

provides

maximum

customer

~~t~~raction

with

hlgh

reliability

and

long

service

life.

-Main

Features

o Has an

unformatted

capacity

1.6

mega-byte,

and a

transfer

rate

500

kbit/sec.

Spindle

speed

can

selected

from

interface

(360

RPM

300

RPK). Changes

disk

capacity

1.0

Kegabyte.

compatible

with

the

new

IBH

PC-AT

(trademark

International

Business

Machines

Corporation)

Whigh

capacity"

floppy

disk

dr1ve,

either

w1th a 300

250

Kblt/second

transfer

rate.

electrically

compatible

with

floppy

disk

drive

controllers.

o LSI

ICs

have

been

used

reduce

the

size

the

drive

and

1~~rp~~p

rpJiability.

Easily

removed

front

panel

allows

packaging

flexibility.

Includes'a

diskette

ejector

for

easy

diskette

removal.

o A

circular

gimbal

spring

the

read/write

head

suspension

aechanism

greatly

improves

med1um

tracking

performance.

o The

steel

band,

flat

stepping

motor

drive

system

for

posit1on1ng

achieves

the

best

1ntertrack

access

til;e

~ts

class:

just

3 ms.

o The

maintenance-free,

DC,

brushless,

direct-drive

motor

obviates

ttte

bel

replacement

necessary

(or

conventional

counterparts.

Excellent

med1a

interchangeab1lity,

wide

off-track

window

time

Ita

rgin,

and

tit

,.er

(orl.ance

are

1nta

ined

ove r wide

ambient

temperature

and

relative

humid1ty

ranges.

o The

hlgh-torque

sp1ndle

Inotor

permits

control

s~itcbing

on and

off

either

the

motor

(starting

t1me

500

illS)

the

head

load

solenoid

(loadine

tll\e

less

than

liS).

o Dynam!c

clamping

insures

correct

disk

seating

w~th

easy

disk

insertion.

1-1

;...~~~'\~~~~~,,~'\~~~\~~~~\~--~,,\~~~~~~,,~,,~~~~~~""~,,~\~~~,,\~",\MITSU8tSHl

ELECTRIC

, J

,.,

GENERAL

DESCRIPTION

o The

MQB5Q-1S

Flexible

Disk

Drive

t~in-head,

double-~i

ded.

magnet!

disk

dri

with

unformated

memory

capa~lt)

1.6

megabyte

(360

RPM),

1.0

megabyte

(300

RPM),

for

double-

density

recordings.

For

1.6

Megabye

operation

the

K4B54-1S

reads

and

wr1tes

5.25-1nch,

double-s1ded

high

density

dIskettes

double-density

for~at.

o The

fo;q

85Q-1S employs

the

unique

tsubi

st,1

circular

gimbal

spring

for

holding

and

the

magnetic

heads

assure

soft,

steady

contact

with

the

aed1um.

This

lDeans

elcellent

read/write

operation

and a

long

service

life

for

the

medium.

One

the

outstanding

features

this

.echanism

reduction

the

effects

jacket

deforlhation

and

thickness

variations,

thereby

&tabilizing

read/write

performance.

changing

the

data

transfer

rate

and/or

the

spindle

speed,

and

translating

track

numbers

given

the

controller,

three

different

types

dl~~~

ma~

acco~odat.€d:

TPI,

high

density

disks

may

read

and

written

without

restriction.

TPI,

standard

density

dlS~S

"lay

read

and

written

after

changing

either

the

transfer

rate

the

spindle

speed.

TPI,

standard

density

disks

may

read

and

written

on,

after

changing

the

transfer

rate

the

spindle

speed.

Once

written

upon

the

H4854-1S,

the

disk

cannot

reliably

used

TP1

disk

drive

again.

o The H4854-1S

allows

two

methods

dOk~~6rd

COli

pit

t 1

bil1

360

RPM

operation,

with

either

500

300

[bit/second

transfer

rates.

-low

write

current-

input

must

used

write

standard

density

.,dia.

The

spindle

speed

IDay

lowered

300 by

use

input

the

drive.

The

transfer

rate

would be

changed

250

Kbit/second.

1-2

J....

~~,,~""~.""""\'\~~,,~_\'\~\~~~~~,,~~,,~\~""""""""~""\~~~"""~

MrTSUBrSHt

ELECTRIC

1.2

SPECIFICATIONS

.2.

Performance

specifications

(Table

1-1)

Hemory

capad

Unformatted

Disk,

kilobytes

Per

surface,

kilobytes

Per

track,

ki.lobytes

Formatted

Disk,

kilobytes

Per

surface,

kilobytes

Per

track,

bytes

(bytes/sector)

(sectors/track)

Transfer

rate.

Kbits/sec

Ave'rage

tency

tilDe

Hot6r

starting

ti~e.nSec.max

Access

time

Track

track

Iverage

Settling

time

Head

time

Speed

change

time

360

RPM

1.6

1.0

1664

832

10.11

1228.8

6'''.11

7680

(512)

(15)

500

1000

500

6.25

655.4

327.7

_096

(256)

(16)

300

500

maximum

(unsettled)

300

RPM

1.0

1000

500

6.25

655.11

327.7

" 096

(256

)

(16)

250

100

" 00

(including

settling

time)

maximum

(including

settling>

400

nSec lIaxillum

Table

1-1

Performance

Specifications

1-3

1.2.2

functional

specifications

(Table

1-2)

Magnetic

flux

inversion

density

Encodin£. II'lethod

Track

density

Number

cylinders

Humber

tracks

Number

heads

Rot.at.ion

period

Index

Media

360

RPM

300

RPM

1.6

1.0

1.0MB

9870

5922 5922

9B70

FeI

5922 5922

MFM

Mn~

96 96

160

2 2 2

166.7

3.3

mSec

Double-sided

TPI,

double

densit.y,

h1gh-

density

5.25

inches

diskette,

soft

~ect.ored

ExAmples:

Brown

Disk

Mfgr.

Maxell

Memorex

BASF

Dysan

UHR-2

MD2-HD

20-BO-HD

HDFD

UHR-2

Table

1-2

Funct.ional

Specificat.ions

1-"

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