Digital Equipment RA81 User Manual

EK-ORAS1-UG-

001

RA81

User

. Disk Drive

Guide

EK-ORA81-UG-

001

RA81

User

Disk Drive

Guide

Prepared

Digital Equipment Corporation

by

Educational Services

of

by

Digital Equipment Corporation

The

material

in

this manual is for informational purposes and is subject to change

without notice. Digital Equipment Corporation assumes no responsibility for any errors which

may appear

in

this manual.

Printed

in

U.S.A.

This document was set on DIGITAL's computerized type-setting system.

• Class A Computing Devices: Notice:

The equipment has been type tested and found to Class A computing device pursuant to Subpart J are designed to provide terference when operated ment own expense may be required

This equipment generates, uses, and may emit radio frequency energy.

comply with the limits for a

of

Part 15

of

FCC Rules

..

reasonable protection against such radio frequency

in

a commercial environment. Operation

in

a residential area may cause interference

to

take measures

in

which case the user

to

correct the interference.

of

this equip-

which

in-

at

his

following are trademarks

The chusetts:

DEC DECUS DIGITAL Digital

Logo PDP UNIBUS VAX

of

Digital Equipment Corporation, Maynard, Massa-

DECnet DECsystem-10 DECSYSTEM-20 DECwriter DIBOL EduSystem

lAS

OMNIBUS OS/8 PDT RSTS RSX VMS

VT

MASSBUS

11

CONTENTS

Page

CHAPTER 1

1.1

1.2

1.3

1.3.1

1.3.2

1.3.3

1.3.4

1.3.5

1.4

1.5

1.6

CHAPTER 2

2.1

2.1.1

2.1.2

2.1.3

2.1.4

2.1.5

2.1.6

2.2

2.2.1

2.2.2

2.2.3

2.3

2.3.1

2.3.2

2.3.3

2.4

2.4.1

2.4.2

2.4.3

2.4.4

2.4.5

2.4.6

2.4.7

2.4.8

2.4.9

INTRODUCTION

PURPOSE AND SCOPE GENERAL INFORMATION DRIVE DESCRIPTION

Head Disk Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Internal Drive Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multi-Drive and Recording Features

Media Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RELATED RA81 RA81

INSTALLATION

SITE PREPARATION AND PLANNING

Environmental Considerations

Cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Floor Loading

Heat Dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power and Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AC

EQUIPMENT UNPACKING AND EXTERNAL INSPECTION. . . . . . . . . . . . . 2-2

Unpacking the System on a Shipping

Installing the Cabinet Levelers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Removing Internal Shipping Brackets and

RA81

Connecting Cabinets

External SDI Cabling Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Programming the Drive Unit Address Plug . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

RA81

Remove the Front Trim Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Install the Slide Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remove the Internal Shipping Brackets and

Mount the RA81 on the Program the Drive

Connect the Electrostatic Discharge

Install the Internal SDI Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31

Mount the Install the Drive Sequence Cables

DOCUMENTATION SPECIFICATIONS OPTIONS

Power Wiring

Packing Material

INSTALLATION.

ADD-ON INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Packing Material

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

I/O

Bulkhead.

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

... " .. " ..............

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

Dual-Port Capability

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

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

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

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

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

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

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

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

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

Slides.

Unit Address Plug

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

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

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

Pallet

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

Bracket.

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

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

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

. . . . . . . . . . . . . . . . . . . . . . . . 2-30

"

....... , '"

, "

.. " ........

'.

. . . . . . . . . . . . . . . . 1-9

~

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

;<

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

..

. . . . . . . . . . . 2-25

. . . . . . . . . . . 2-30

. " . .

'"

1-1 1-1 1-2

11-5 11-

. 1-8

1-12

,

2-1 2-1 2-1 2-1 2-1 2-1 2-2

2-2

2-6

2-10

2-

21

2-

25

2-33

2

7 7

1II

Page

QHAPTER 2

2.4.10

204.11

2.S

2.S.1

2.S.2

2.S.3

CHAPTER 3

3.1

3.1.1

3.1.2

3.1.3

3.1.4

3.1.S

3.2

3.3

3.3.1

3.3.2

3.3.3

3.4

3.4.1

3.4.2

304.3

INSTALLATION (Cont)

Connect AC Power Route and Clamp the Cables

RA81 DRIVE

The Diagnostic Terminal Applying Checkout

OPERA TING INSTRUCTIONS

CONTROL

RUN/STOP FA

UL UNIT/READY WRITE A and B CIRCUIT BREAKERS DRIVE Spin-Up Spin-Down Removing RA81

CUSTOMER

Air-Filter Cleaning Replacement

DIAGNOSTIC

Power to the Drive

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

PANEL SWITCHES AND INDICATORS

Switch and Indicator

T Switch and Indicator

PROT

Port Select Switches

OPERATION

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

.......

CARE

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

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

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

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

CHECKOUT

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

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

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

........

"

......

Power

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

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

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

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

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

..........

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

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

,

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

"

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

'

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

,

...

,

....... , ...

'"

"

..

.,

"

, .

.

2-36

.

2-36

.

2-38

.

2-38

.

2-39

.

2-39

.

3-1

.

3-2

.

3-3

.

3-S

.

3-S

.

3-6 3-6

.

3-6 3-6

.

3-6 3-6

.

3-6

.

3-6

. .

3-7

.

3-7

APPENDIX A

A.l A.2 A.3

AA A.S

A.6

A.7

A.8 A.9

A.I0

FIGURES

1-1 1-2

1-3 1-4

1-5

1-6

1-7

2-1 2-2 2-3 2-4

2-5

2-6

DIAGNOSTIC TERMINAL INSTRUCTIONS

INTRODUCTION SHIFf CONTROL CONTINUE (CONT) AND X-ON, X-OFF KEYS DELETE DISPLAY

BREAK CR ESCAPE

The RA81 Disk Drive

Basic RA81 Disk-Subsystem Block Diagram

Hinged Circuit-Module Arrangement

Bingle-Port, Multi-Drive Configuration

Dual-Port Configuration

HDA

RA81

RA81 Electrical

Unpacking a

Building the Ramp

Shipping Bracket Removal

Cabinet Leveler Installation

Leveler Adjustment

KEyS

CHARACTERS

KEy

SCROLL SWITCH

KEy

KEY (CARRIAGE RETURN)

KEy

Head Arrangement

Sector Format

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

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

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

CLEAR

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

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

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

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

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

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

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

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

Plugs and Receptacles

System

on

a Shipping Pallet

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

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

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

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

(CLR) KEYS

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

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

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

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

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

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

,

'

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

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

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

.

A-I

.

A-2 A-2

. .

A-2 A-2

.

A-2

.

A-2

. .

A-3

.

A-3

.

A-3

.

1-3

.

1-4

.

I-S

.

1-6

.

1-6

.

1-7

.

1-7

.

2-2

.

2-3

.

2:-4

.

2-S

.

2-S

.

2-6

iv

Page

FIGURES

2-7

2-8 2-9 2-10 2-11 2-12 2-13 2-14 2-15 2-16 2-17 2-18 2-19 2-20 2-21

2-22 2-23 2-24 2-25 2-26 2-27 2-28 2-29 2-30 2-31 2-32 2-33 2-34 2-35 2-36 2-37

2-38 2-39 2-40 2-41 2-42 2-43 2-44 2-45 3-1 3-2 3-3

A-I

(Cont)

Raising the Drive Logic Chassis Assembly Foam

Pad Removal

HDA

Details Belt Tension Lever Belt tension End

Panels Opening the Back

Door End-Panel Connecting the Cabinets Removing the Installing the Front Locking Bracket Installing the SOl

Cable Shield Terminator Installation Single Drive External Drive Removing Cabinet Chassis Mounting Chassis Mounting Chassis Mounting the Electrostatic Discharge Bracket Installation Installation Installation

Removal

HDA

Positioner Extending Extending the Chassis

Pivot

Wing Electrostatic Discharge Bracket Details Cabling for a Two-Drive Cabling for a Three- and Four-Drive Connecting Mounting the Drive Sequence Cable Installation Power Connecting Cable Clamps to Uprights Cable Routing and Clamping Diagnostic Terminal Connections

Panel Controls and Indicators

Front Cam-Coded Air

Filter Removal

Field Service Diagnostic Terminal

Lever

and

Back

and

Back

Unit Address Plug

Slide Bracket Installation

of of

of

HDA

Cabinet

Assembly

SOl

I/O

Controller

Swlich

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

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

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

and Interlock Switch

Joiner Panels

Door

End-Panel Lock Removal

Bottom Key-Button Removal

Trim

Panel Brackets

Locking Brackets

SOl

Trim

Slide to Front Upright Slide to Back Upright

Cable Retainer Springs Drive Detent Latch Drive Mounting Rails

Cable Connections

Lock

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

Stabilizer

Slides

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

Cable Shield Terminators

Bulkhead Assembly

AC

Receptacles

Cover

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

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

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

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

Cables

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

Panels

System

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

System

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

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

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

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

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

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

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

.

2-7

.

2-7

.

2-8

.

2-9

.

2-10

.

2-11

.

2-11 2-12

.

2-13

.

2-14

.

2-15

.

2-16

.

2-17

. .

2-18

.

2-19

.

2-19

.

2-20

.

2-21

.

2-22

.

2-22

.

2-23

.

2-24

.

2-24

.

2-25

.

2-26

.

2-27

.

2-28

.

2-28

.

2-29 2-30

. .

2-31

.

2-32

.

2-33

.

2-34

.

2-35

.

2-36 2-37

. .

2-38

.

2-40

.

3-1

.

3-5

.

3-7

.

A-I

TABLES

1-1 1-2

1-3 3-1 3-2

Related Documentation RA81 Specifications

RA81 Options

Indicator Conditions

Drive

Front-Panel Fault Identification

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

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

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

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

Codes

v

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

1-8

. .

1-9

1-13

.

3-2

.

3-3

.

CHAPTER 1

INTRODUCTION

1.1

PURPOSE AND SCOPE

This manual describes the RA81 Disk Drive and tells

is

This manual

written primarily for the RA81 user except for Chapter 2 which

service personnel.

1.2 GENERAL INFORMATION

The RA81

is

a random-access, moving-head disk drive with non-removable media using a head/disk assembly (HDA). The HDA, a key feature of this drive, protects data and improves hardware dependability. The RA81 has a data storage capacity of 456 megabytes in 16-bit word format. The RA81 connects to the controller via the Standard Disk Interconnect

(SDI) bus and may be used with any controller implementing this bus. Additional disk drives can be connected to a controller to increase the data storage capacity. The RA81 can also be connected

in

a dual-port arrangement permitting time-shared access by two controllers.

Performance Features

• 17.4 megabit per second peak transfer rate

how

to install, checkout, and operate the equipment.

is

only for qualified field

•

28

ms average positioning rate

• 8.3 ms average rotational latency

Data Integrity

• Protected media

• Microprocessor-controlled servo

• Automatic error correction

Hardware Features

• Simple modular construction

• Rugged design

• Extensive microcode diagnostics

]

-]

NOTE Like other fixed-media devices, some method backup should be used to prevent loss event

of

a failure. The following methods are recom-

of

data in the

of

mended.

File Duplication-Important files should be duplicated often. Usually, this

will

involve

copying the

data on a removable medium such as magnetic tape.

Journaling-The use

of

journaling is recommended in

transaction processing applications. This method allows reconstruction

of

files

up

to the last checkpoint

or backup.

1.3 DRIVE DESCRIPTION The RA81 The drive has optional slide rails and

rack. An RA81 Disk Drive subsystem figuration) and one or more disk drives. Figure

is

a self-contained disk drive with a built-in cooling system and dc power supply. See Figure

is

designed to be inserted into a 19-inch wide RETMA equipment

Up to three drives (one fixed mounted and two mounted

is

made up of an SDI controller (two controllers with the dual-port con-

1-2

shows the relationship between the subsystem compo-

on

slides) can be included in a single cabinet.

1-1.

nents. All RA81 disk logic

is

included within the drive. Three of the primary circuit modules (servo, microprocessor, and personality) are located directly under the logic access cover on top of the cabinet. These three modules are mounted

DC operating power for the logic circuits

on

hinges for ease of service. See Figure

is

provided by the drive power supply located inside the back of

1-3.

the drive. Internal fans provide the necessary cooling for the power supply and for other drive components. The RA81 Disk Drive conforms to UL,

CSA, FCC, and VDE standards.

1.3.1 Head Disk Assembly

The sealed HDA contains the recording media (four platters), rotary positioner, read/write heads, and

preamplifiers. information used for positioning the read/write heads. The rotary positioner in the HDA

Seven of the platter surfaces are used for recording data. The eighth has dedicated servo

is

controlled by a slave microprocessor closed-loop servo system. The RA81 uses both dedicated and embedded servo for head positioning. This dual arrangement allows for coarse cylinder positioning from the dedicated servo surface and fine cylinder positioning from embedded servo bursts which are read preceding each block of data. The dedicated servo surface and the embedded servo data are written on the disk HDA

is

manufactured.

at

the time the

1.3.2 Internal Drive Diagnostics Two groups of internal diagnostics are used in the RA81 to permit error detection and fault isolation. The first group of diagnostics

is

run automatically during the power-up sequence to validate initial operations. Error codes for this test are displayed by indicators nostics

is

initiated and monitored through a diagnostic terminal as a maintenance function in the off-line mode. These microcode diagnostics are for field service use only and are not part of the normal operating functions.

The RA81 has a dual microprocessor (master and slave) control system. The master

croprocessor module and the slave functions, such

as

servo control, while the other controls status checking. Both microprocessors share the

diagnostic responsibilities.

on

the operator control panel. The second set of diag-

is

located

is

located on the servo module. One microprocessor handles real-time

on

the

1-2

mi-

CZ-0775

Figure

1·1

The RA81 Disk Drive

TO/

FROM

CPU

SDI

CONTROLLER

SDI CABLES

DRIVE

o

r------,

DRIVE :

I 1 I

L

____

---J

r----.

I DRIVE I

L

2 I

____

-.1

r------,

I DRIVE I

L

3 I

____

-1

ADDITIONAL

DRIVES

CZ-0730

Figure 1-2. Basic RA81 Disk-Subsystem Block Diagram

1-4

CHAPTER 1

INTRODUCTION

1.1

PURPOSE AND SCOPE

This manual describes the RA81 Disk Drive and tells

is

This manual service personnel.

written primarily for the RA81 user except for Chapter 2 which

1.2 GENERAL INFORMATION

The RA81 sembly (HDA). The HDA, a key feature of this drive, protects data and improves hardware dependability. The RA81 has a data storage capacity of 456 megabytes controller via the Standard Disk Interconnect this bus. Additional disk drives can be connected to a controller to increase the data storage capacity. The RA81 can also be connected in a dual-port arrangement permitting time-shared access by two controllers.

Performance Features

is

a random-access, moving-head disk drive with non-removable media using a head/disk

(SDI) bus and may be used with any controller implementing

• 17.4 megabit per second peak transfer rate

how

to install, checkout, and operate the equipment.

is

only for qualified field

in

16-bit word format. The RA81 connects to the

as-

•

28

ms

average positioning rate

• 8.3

Data Integrity

• Protected media

• Microprocessor-controlled servo

• Automatic error correction

Hardware Features

• Simple modular construction

• Rugged design

• Extensive microcode diagnostics

ms

average rotational latency

I-I

NOTE Like other fixed-media devices, some method backup should be used to prevent loss event

of

a failure. The following methods

of

data in the

are

recom-

mended.

of

File Duplication-Important files should

cated often. Usually, this

will

involve

be

dupli-

copying the

data on a removable medium such as magnetic tape.

Journaling-The use

of

journaling is recommended in transaction processing applications. This method allows reconstruction

of

files

up

to the last checkpoint

or backup.

1.3 DRIVE DESCRIPTION The RA81 The drive has optional slide rails and rack. An RA81 Disk Drive subsystem figuration) and one or more disk drives. Figure

is

a self-contained disk drive with a built-in cooling system and dc power supply. See Figure

is

designed to be inserted into a 19-inch wide

RETMA

Up to three drives (one fixed mounted and two mounted on slides) can be included

is

made up of an SDI controller (two controllers with the dual-port con-

1-2

shows the relationship between the subsystem compo-

equipment

in

a single cabinet.

I-I.

nents. All RA81 disk logic

sor, and personality) are located directly under the logic access cover modules are mounted

DC operating power for the logic circuits

is

included within the drive. Three of the primary circuit modules (servo, microproces-

on

top of the cabinet. These three

on

hinges for ease of service. See Figure

is

provided by the drive power supply located inside the back of

1-3.

the drive. Internal fans provide the necessary cooling for the power supply and for other drive components. The RA81 Disk Drive conforms to

UL, CSA, FCC, and VDE standards.

1.3.1 Head Disk Assembly The sealed HDA contains the recording media (four platters), rotary positioner, read/write heads, and preamplifiers. Seven of the platter surfaces are used for recording data. The eighth has dedicated servo information used for positioning the read/write heads. The rotary positioner in the HDA

is

controlled by a slave microprocessor closed-loop servo system. The RA81 uses both dedicated and embedded servo for head positioning. This dual arrangement allows for coarse cylinder positioning from the dedicated servo surface and fine cylinder positioning from embedded servo bursts which are read preceding each block of data. The dedicated servo surface and the embedded servo data are written HDA

is

manufactured.

on

the disk

at

the time the

1.3.2 Internal Drive Diagnostics

Two groups of internal diagnostics are used in the RA81 to permit error detection'and

first group of diagnostics Error codes for this test are displayed by indicators nostics

is

initiated and monitored through a diagnostic terminal as a maintenance function in the off-line

is

run automatically during the power-up sequence to validate initial operations.

on

the operator control panel. The second set of diag-

fault isolation. The

mode. These microcode diagnostics are for field service use only and are not part of the normal operating functions.

The RA81 has a dual microprocessor (master and slave) control system. The niaster croprocessor module and the slave functions, such

as

servo control, while the other controls status checking; Both microprocessors share the

is

located on the servo module. One microprocessor handles real-time

'located on

the

mi-

is

diagnostic responsibilities.

1-2

"

IIliiiIiIIiIiii.UHlliUiIIIlifiiRiUliilM9f1

~

........

uHdinii

.1.

I

!

Figure

1-1

The RA81 Disk Drive

CZ-0775

1-3

TO/

FROM

CPU

SDI

CONTROLLER

SDI CABLES

DRIVE

o

,------,

DRIVE I

I 1 I

L

____

---J

r-----,

I DRIVE I

L

2 I

____

--1

,----,

I DRIVE I

L

3 I

____

--1

ADDITIONAL

DRIVES

CZ-0730

Figure 1-2. Basic RA81 Disk-Subsystem Block Diagram

1-4

1.5 RA81

SPECIFICATIONS Table 1-2 gives the primary performance, power, environmental, and physical characteristics Disk Drive.

NOTE

The term operating, under the specification section of

the table, indicates those values

that

must not be

exceeded while the drive is operational. The term

non-operating indicates those values

be exceeded when the drive is being stored

that

must not

or

in a non-operating condition. Exceeding these values can damage the drive when power is applied. Adhering to

that

these values ensures

the drive operates correctly

when power is applied.

Table 1-2 RA81 Specifications

of

the RA81

Characteristic

Data

storage capacity

(Single drive)

16-bit word format Media Head

type

disk assembly(HDA)

Number

of disks Disk surfaces Number

of

heads (groups) Heads per disk surface Cylinders per Sectors per

head

track

16-bit word format

Servo system

Performance characteristics

Disk encoding method Linear bit density

Bytes per

Transfer

track

rate

(unformatted)

Bit cell period Read

initialization time

Write-to-read recovery

Specification

456

MB

Winchester double density

4

7 data, 1 servo

14 data, 1 servo

2

1258 (numbered 0 through 1257) 52

Dedicated

and

embedded

3/2

11,400 bpi, 8550 flux changes per inch

at

inner group

36,352

17.4 megabits per second 57 ns (nominal)

10 microseconds (ex-

data

cluding

separator

sync)

1-9

Table 1-2 RA81 Specifications (Cont)

Characteristic

Read-to write recovery

Data

separator

synchronization

Rotational latency

Rotational speed Average rotational latency Maximum rotational latency Head

switch latency (switch on a given cylinder) Average seek One cylinder Maximum seek

Disk rotation

Start

start/stop

time Stop time Maximum

start/stop

times

frequency

Specification

1 microsecond 10

microseconds

3600 rpm, + 2.5%, - 3.5%

8.33 ms

16.66 ms 6 ms maximum

28

ms maximum 7 ms maximum 50 ms (1258 cylinders)

20 seconds maximum 20 seconds maximum 6

(3

minutes between cycles with drive powered up and ready during one of the 3-minute cycles)

Physical characteristics (Drive only)

Width (nominal) Depth (nominal) Height (nominal) Weight (approx.)

Environmental limits

Temperature

Operating

Non-opera ting

Relative humidity

Operating

44.5 centimeters (17.50 in.)

67.3 centimeters

(26.50 in.)

26.4 centimeters (10.38 in.)

67.1 kilograms (148 pounds)

10 to 40 degrees C (50 to 104 degrees F) with a temperature gradient of (36 degrees F

20 degrees

/hour)

C/hour

- 40 to + 60 degrees C ( - 40 to + 140 degrees F)

10%

to 85% (non-condensing) with a maximum wet bulb temperature of

28

degrees C (82 degrees F) and a minimum dew point of 2 degrees C (36 degrees F)

1-10

Table 1-2 RA81 Specifications (Cont)

Characteristic

Shipping and storage

Heat

dissipation

Altitude

Operating

Non-opera ting and shipping

Power

Voltage requirements (Single phase)

Specification

10%

to

85%

with

no

condensation 644 watts (nominal)

Sea level to 2400 meters (8000 feet) above sea level. Note: Maximum allowable temperatures are reduced by a factor of 1.8 degrees meters for operation

(1

degree F /1000 feet)

at

C/1000

higher

altitude sites 300 meters (1000 feet) below

sea level to

9000 meters (30000 feet) above sea level (actual or by means of cabin pressurization)

120 volt, 60

220-240 volt, 50 drives

Current requirements

Starting current for

120 volt ac drives

Running current for 120 volt ac drives

Starting current for 220-240 volt ac drives

Running current for 220-240 volt ac drives

Power requirements

Starting power for 120 volt ac drives

Hz

drives

90-128 volts ac, 60 plus

or minus 1

Hz

184-256 volts ac, 50 plus

or minus 1

35

ampere peak surge for

Hz

4 seconds

7.8 amperes rms

at

120 volts 18

ampere peak surge for

4 seconds

3.5 amperes rms

at

240 volts

4200 watts

at

120 volts

I-I

I

Table 1-2 RA81 Specifications (Cont)

Characteristic

Running power for 120 volt ac drives

Starting power for 220-240 volt ac drives

Running power for

220-240 volt ac drives Power factor Line cord length

(from cabinet) Plug type

120 volts,60 Hz

Specification

644 watts

4320 watts

496 watts

at

120 volts

at

240 volts

at

240 volts

0.9

259 cm (8.5 feet)

Hubbe1 No.2611 NEMA DEC

No.L5-30P

No.12-11193

(See Figure 2-1)

240 volts, 50Hz

1.6 RA81 OPTIONS

Table All RA81 options

1-3

lists the RA81 options.

in

Table

1-3

include a 12-foot, shielded, inter-cabinet cable.

because of the dual-access feature, order cable

feet),or BC06V-80 (80 feet).

Hubbel No.2321 NEMA DEC (See Figure

No.L6-20P

No.12-11192

2-1

If

a longer cable

is

required

BC06V-12 (12 feet), BC06V-25 (25 feet), BC06V-50 (50

1-12

Table 1-3 RA81 Options

Option

RA81-AA RA81-AD RA81-CA RA81-CD RA81-EA RA81-ED RUA81-AA

RUA81-AD RUA81-CA RUA81-CD RUA81-EA RUA81-ED RUA81-JA RUA81-JD

Description

456 MB drive, 120 V AC, 60 Hz, 456 MB drive,240 VAC,

50 RA81-AA, H9642-AP cabinet, RA81-AD, H9642-AR cabinet, 50

no

HZ,no

60

cabinet cabinet

Hz

Hz (3) RA81-AA, H9642-AP cabinet, 60 (3) RA81-AD, H9642-AR cabinet, 50 RA81-AA,

RA81-AD, RA81-CA,

RA81-CD, RA81-EA, RA81-ED,

RA81-CA, (2)

RA81-CD, (2)

UDA50,

no cabinet UDA50, no cabinet UDA50, cabinet UDA50, cabinet

UDA50, cabinet UDA50, cabinet

Hz

1-13

CHAPTER 2

INSTALLATION

2.1

SITE

PREPARATION AND PLANNING

A certain amount of preparation and planning

paragraphs that follow discuss some of the points that should be considered.

2.1.1 Environmental Considerations The RA81 altitude limits must be considered before the drive mental characteristics.

2.1.2 Cleanliness Because the RA81 has a sealed HDA, dust particles should not be able to enter the area where the recording media ment possible.

2.1.3 Floor Loading The weight of one RA81 cabinet and disk drive drive weighing approximately 67.1 Kg (148Ibs). A completely loaded RA81 cabinet (approximately 283 Kg or 6241bs) should not place any abnormal stress on a raised computer room floor. However, the weight of existing equipment should be considered before installing additional drives.

is

designed to operate in a business or light industrial environment. Temperature, humidity, and

is

located. However, it

is

still desirable that the equipment be operated in the cleanest environ-

is

necessary before installing the RA81 Disk Drive. The

is

installed. Refer to Table 1-2 for figures

is

approximately 148.8 Kg (328 lb) with each additional

on

environ-

2.1.4 The heat dissipation requirements for the complete system can be computed by multiplying this figure by the number of drives, adding the heat dissipation figures of the other system components, and then adjusting the total figure to allow for cooling system efficiency and any other factors.

2.1.5 Power and

The RA81 wiring for future expansion. The circuit breaker on the back of the power controller regulates the power to every

drive within the cabinet.

Heat

Dissipation

of

each RA81 may reach approximately 2200 Btu/hour. The approximate cooling

Safety Precautions

WARNING Hazardous voltages ment. Installation and servicing should be performed by

a qualified and trained service person. Bodily in-

jury

or

equipment damage may result from incorrect

servicing. Refer to the RA81 Service Manual for proper instructions.

will

not cause any unusual fire or safety hazards to other computer equipment. The ac power

in

the computer system should be carefully checked, however, to be sure there

are

present inside this equip-

2-1

is

adequate capacity

2.1.6 The wiring used by Digital Equipment Corporation conforms to graph 1.3. This means the wire used load current (except

AC

Power Wiring

UL

and other standards listed in Para-

as

equipment ground

in

an emergency), but does carry leakage current. All equipment

is

green and yellow. The ground wire carries

is

shipped with a

no

grounding connection on its frame. The ac return line (also called the identified conductor, neutral, common, and cold lead)

is

blue. The ac return line must not be used to ground equipment since its purpose

is

to

conduct current. The ac input line (brown wire)

ac plugs and receptacles used

120V 30 1-PHASE

240 V 50Hz 15 1-PHASE

NOTE:

PIN POWER CONTROLLER

Figure

2-1

is

also called the hot wire. Its purpose

on

the RA81 are shown in Figure 2-1.

PLUG

60

Hz

A

CONFIGURATIONS

HUBBEL #2611

NEMA = L5-30P DEC = 12-11193

HUBBEL

#2321 N DEC#12-11192

w~

@

EMA # L6-20P

OF

PLUGS EXITING

IN

CABINET.

#2610 L5-30R 12-11194

#2320

L6-20R 12-11191

RA81 Electrical Plugs and Receptacles

is

to supply current to the system. The

RECEPTACLE

@

G

X

@

CZ-0740

2.2

EQUIPMENT

When delivered, the RA81 equipment

UNPACKING AND EXTERNAL

is

packed in a cardboard container attached to a shipping skid or

INSPECTION

pallet. Refer to Figure 2-2.

Before unpacking the equipment, check for external shipping damage. Report any damage to the DIGI-

TAL

Field Service or Sales Office and to the local carrier. Keep all packing material and receipts when a

damage claim

is

filed.

2.2.1 Unpacking the System on a Shipping Pallet

To unpack the equipment and remove it from the pallet, proceed

1.

Remove all packing materials.

2.

Remove the four shipping bolts that fasten the drive cabinet to the pallet. Refer to the inset

as

follows using Figure 2-2 as a guide.

Figure 2-2.

2-2

in

SHIPPING STRAPS

Figure 2-2 Unpacking a System

3.

Build the ramp (Figure 2-3) to aid in rolling the disk drive off the pallet.

1.

Remove the plastic package containing the lag screw and nails from the bottom of the ramp.

2.

Connect the ramp support block to the front of the shipping pallet with the lag screw.

3.

Nail the ramp to the top of its support block using the two nails provided.

on

a Shipping Pallet

2-3

CZ-0564

LAG SCREW

PALLET

RAMP

SUPPORT BLOCK

CZ-Q735

Figure

2-3

Building the Ramp

WARNING

will

be

At least two persons next step

of

this procedure because

needed to perform the

the cabinet.

4.

Remove the four wooden blocks under the drive cabinet.

5.

Carefully roll the drive cabinet down the ramp.

2.2.2 Installing the Cabinet Levelers Use the following procedure to install the cabinet levelers.

1.

Wheel the equipment cabinet to the correct location before installing the levelers.

2.

Unbolt and remove the four red shipping brackets and leveler nuts

3.

Assemble the four levelers as shown

in

Figure 2-5. Screw each leveler through the nut until it .

may be positioned into place without raising the cabinet. See inset

of

the weight of

as

shown in Figure 2-4.

in

Figure 2-5.

2-4

..h~:....---

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

LEVELER NUT

~.J>~-

RED

SHIPPING

BRACKET

Figure 2-4 Shipping Bracket Removal

ill

~LEVELERNUT

®

FLAT

WASHER

[!]

@ LOCK WASHER

®

HEX

NUT

CZ·OS88

Figure 2-5 Cabinet Leveler Installation

4. Slide the leveler into the slots in the cabinet made with the floor.

5.

Adjust until the cabinet

See Figure 2-6.

is

level.

CZ-0736

as

shown. Screw the leveler down until solid contact is

2-5

"'------_d'

CZ-0737

2.2.3

Figure

Removing Internal Shipping Brackets and Packing Material

2-6

Leveler Adjustment

Packing material and shipping brackets are inside the cabinet of each disk drive. Use the following procedure to remove this material and to prepare the drive for operation.

1.

Raise the logic access cover by turning the lock 90 degrees counterclockwise. Refer to Figure 2-7.

2.

Fold out the servo and personality modules. Remove the foam shipping pads between the modules (Figure 2-8).

3.

Return the modules to their original position and lock the logic access cover back in place.

4.

Raise the drive logic chassis assembly by pushing in front bezel (Figure 2-7).

Use a screwdriver blade to trip the latch.

on

the latch behind the center slot in the

2-6

LOGIC ACCESS

COVER

/

LOGIC ACCESS COVER LOCK

CZ-0739

Figure 2-7 Raising the Drive Logic Chassis Assembly

LOGIC ACCESS

COVER

SERVO

MODULE

PERSONALITY MODULE

FOAMPADS14~======~~========~)

U~

m 0

moo

00100

all

00

ooooom

00000

00001

Figure 2-8 Foam Pad Removal

CZ-0738

2-7

5.

Remove the four red shipping brackets that fasten the HDA to its mountings. See Figure 2-9. The bracket next to the spindle motor requires special attention and should be removed last. To remove the other three shipping brackets, loosen the three HDA mounting nuts. Also, completely remove the 5/16-inch hex-head bolts that hold the shipping brackets in place. Slide the three shipping brackets out from under the HDA mounting nuts.

6.

Remove the shipping bracket next to the spindle motor by loosening the remaining HDA mount-

jam

ing nut and detaching the bolt and

nuts. See Figure 2-9. Slide the shipping bracket out from

under the HDA mounting nut.

TOP

VIEW

SPINDLE MOTOR

~

..........

.r

POSITIONER LOCK

LEVER

1c5l):::!!~'!!!!!:.~~E!~~~~~--

11'

LOCK

WASHER

SHIPPING BOLT

AND

JAM

NUTS

SHIPPING BRACKET

5/16 BOLT

HEX HEAD

Figure

2-9

HDA Details

2-8

SHOCK

MOUNT

SHIPPING BRACKET

FRONT VIEW

CZ-0741

NOTE

Save all shipping brackets and hardware for future use when moving equipment.

7.

Tighten all four HDA mounting nuts.

8.

Ensure that the belt-tension lever

9.

Place the positioner lock lever on the HDA in the UNLOCK position (Figure 2-9).

is

in the engaged position as shown in Figure 2-10.

READ/WRITE MODULE

HDA

RELEASED

POSITION

BELT TENSION LEVER

Figure 2-10 Belt Tension Lever

An interlock switch prevents the spindle motor from operating while the belt tension is released. See Figure 2-11. The belt-tension lever must be in the en-

gaged position for spin-up.

CZ-0742

NOTE

2-9

CZ-0743

10.

Figure

Lower the logic chassis assembly until it latches.

2-11

Belt Tension Lever and Interlock Switch

2.3 RA8l INSTALLATION

An RA81 Disk Subsystem consists of an SDI disk controller and the subsystem, it net, install the is

necessary to join two drive cabinets together.

is

necessary to connect the disk drive cabinet to the Central Processing Unit (CPU) cabi-

SDI cables, and program the unit address plug.

at

least one RA81 Disk Drive. To install

If

the system has more than three RA81s, it

2.3.1 Connecting Cabinets

The H9642 end panels for stand-alone use. to the first. The H9642 BP

AP/AR

(120/240 volt) cabinet

If

more than three drives are required, a second drive cabinet may be joined

/BR

(120/240 volt) expansion cabinet comes with a joiner panel but

will

hold up to three disk drives.

It

comes equipped with two

no

end panels. The two cabinets may be joined by removing one of the end panels of the first cabinet and placing it on

the the outside edge of the expansion cabinet. Figure 2-12 shows the end and joiner panel locations.

Use the following procedure to join disk cabinets.

1.

Open the back door

on

the cabinet with the end panels by turning the hex lock counterclockwise.

Refer to Figure 2-13.

2-10

JOINER PANEL

END PANELS

Figure 2-12 End Panels and Joiner Panels

Figure 2-13 Opening the Back Door

2-11

2.

Remove the back cabinet door by unscrewing the ground wire and pulling down latch. See Figure 2-14.

on

the top door

PULL DOWN

ON

DOOR

LATCH

CZ-07B1

Figure 2-14 Back Door and End-Panel Lock Removal

3.

Lift the door off the bottom end panel lock.

4.

Loosen the two hex screws and remove the end panel lock from the base of the cabinet.

5.

Lift the end panel vertically to disengage it from the four key buttons on the side of the cabinet frame. Refer to Figure 2-15.

6.

Unscrew the ground wire attached to the end panel.

7.

Remove the back end-panel lock from the expansion cabinet.

8.

Attach the ground wire just removed from the first cabinet to the exposed side frame of the expansion cabinet.

9.

Attach the other end of the ground wire to the end panel just removed from the first cabinet.

2-12

TOP KEY BUTTONS

10.

11.

12.

13.

REMOVE CENTER SCREW

CZ-0774

Figure 2-15 End-Panel Bottom Key-Button Removal

Lower the end panel over the keyhole buttons on the expansion cabinet. Secure the end panel by replacing the back end-panel lock. Remove the screws in the center

of

the two lower key buttons from the first drive cabinet.

Engage the top two key buttons on the first drive cabinet (Figure 2-16) into the keyhole slots the expansion cabinet joiner panel.

on

2-13

DRIVE CABINETS

TOP VIEWS:

KEY

BUnONS

CABINET EXPANSION

JOINER

PANEL

CABINET EXPANSION

14.

15.

DRIVE CABINETS

CABINET EXPANSION

CZ-0744

Figure 2-16 Connecting the Cabinets

Adjust the cabinets until their fronts are flush. Remove the bottom trim panels from the front of the cabinets by removing the two screws

their base. Refer to Figure 2-17.

at

2-14

Figure

2-1

7 Removing the Trim Panel Brackets

16.

Remove the two screws that hold the two retainer trim brackets nearest the side where the two cabinets are joined. Refer to Figure 2-18.

17.

18.

19.

Place the front locking bracket over the retainer trim brackets. Bolt the two cabinets together with the four bolts, as shown. Replace the two bottom trim panels.

20. Open the back door of the cabinets.

21. Loosen the screws that hold the two back end-panel locks nearest the side where the two cabinets are joined.

2-15

RETAINER

TRIM

BRACKET

FRONT LOCKING BRACKET

FRONT LEFT END-PANEL

LOCK

CZ-0760

22.

Figure

Slide the back locking bracket over the end panel locks and tighten the four

2-18

Installing the Front Locking Bracket

Figure 2-19.

23.

24.

25.

Replace the back door and any end panel locks removed

Lower the levelers until the cabinets are raised off their casters. Adjust the levelers.

2-16

in

this procedure.

screws.

Refer to

CPU

CABINET

==--

111111

111111 111111

111111 111111,

111111

11111'

111111

11

1111

1111111111111

=-----

''ill

111111. 1111

IlIlIi

11111

111111

11111

JlJII

,

11111

1111111

BACK LOCKING BRACKET

11111

11111 11111111111

'1111

11111

111111

'11111

111111

11111

",Ii

111111

11111

lill

DRIVE CABINET

CZ-0746

Figure 2-19 Installing the Back Locking Brackets

2.3.2 External SDI Cabling Procedure Both internal and external SDI cables are mounted in the

I/O

bulkhead assembly. Internal SDI cables

connect to the top of the bulkhead and external cables connect to the bottom. Refer to Figures

2-21. The procedure for connecting the internal

The external head connector, and the drive cabinet have already been installed. ler user guide. When the

SDI cables must be installed between the central processing unit (CPU) cabinet,

I/O

If

not, refer to the installation procedure

CPU

cabinet

I/O the appropriate disk controller user guide to install the procedure to install the external

1.

Plug the external SDI cable into the Port A receptacle

SDI cables.

SDI cables

bulkhead connector. The CPU

is

discussed in Paragraph 2.4.7.

I/O

bulkhead connector should

in

the appropriate disk drive control-

bulkhead connector has been installed,

SDI cables

at

the

CPU

cabinet. Use the following

on

the bulkhead. External SDI cables

follow

the instructions in

enter from the bottom.

2.

Install the two screws that hold the SDI cable shield terminator in place and tighten them. Refer to Figure

2-20.

2-20 and

I/O

bulk-

2-17

--------

-- i :

: -

MO~::-~

SCREWS

I/O

BULKHEAD

FOR

SECOND

ADD-ON

EXTERNAL SDI

CABLES

Figure 2-20 SDI Cable Shield Terminator Installation

3.

Clamp the external SDI cables to the cable entry retainers below the hose clamp or tie wrap. Refer to Figure 2-21.

4.

If

more than one drive

the

RA8!

add-on installation procedure (Paragraph 2.4) for instructions.

is

mounted in the cabinet, more SDI cables must be installed. Refer to

--

~

rl----

I/O FOR ADD-ON

_________

BULKHEAD

FIRST

I/O

bulkheads with either a

--

CZ-0764

2-18

DRIVE

CIRCUIT BREAKER

POWER CORD

AC

OUTLET FOR DRIVE POWER ON FRONT OF

POWER CONTROLLER

DISK DRIVE

2.3.3

Figure

Programming the Drive Unit Address Plug

2-21

Single Drive External SDI Cables

The READY cover on the operator control panel between

0 and

251

must be programmed into this plug. The plug comes

~~==O=~~~_POWER

LOCAL/REMOTE

is

also the drive unit address plug. The drive unit numbers

SWITCH CZ-0765

LAMP

as

"Unit 0". To set up a drive unit number other than zero, remove the READY switch cover from the control panel and cut off the tabs that add up to the required number. Figure 2-22 shows the binary value represented by each tab.

REAR

CONFIGURATION

Figure 2-22 Drive

16

Unit

2-19

CZ-0747

Address Plug

For example, switch cap.

number 0

if

unit number 7 is required for a specific drive, tabs

If

unit number 113

is

required.

is

required, tabs

64,32,

1,

2, and 4 would have to be

cut

16, and 1 must be removed. Leave all tabs on

off

the

ifunit

After the drive unit number has been selected, place the gummed label with the corresponding number in

the recessed area on the front

of

the switch cover. Replace the switch cover on the operator control panel.

2.4 RA81 ADD-ON INSTALLATION Use the following procedure to install additional drives in a cabinet.

CAUTION

Do not try to complete the add-on instalhition with-

of

out the help of

the drives.

a second person because

of

the weight

2.4.1 Remove the

The first add-on drive should be placed in the center bay bay. Remove the trim panel

Front

Trim

Panel

of

the RA81 cabinet and the second in the bottom

at

the proper location by unscrewing the four 10-32 hex nuts panel to the cabinet frame. These nuts can be reached through the back 2-23.

HEX

NUT

10-32

(4

PL)

TRIM

PANEL

/~

~

,/

8

that

hold the

of

the cabinet. Refer to Figure

Figure 2-23 Removing Cabinet Trim Panel

CZ-OS77

2-20

2.4.2 Install

the

Slide Assembly

Each RA81 add-on drive must be mounted to install the slides in the drive cabinet.

1.

Screw a chassis slide bracket 5/16

inch phillips head sems screws (screws with star washers attached) to mount each. Refer to

on

Figure 2-24.

2.

Set aside the following hardware:

in

the cabinet on a slide assembly. Use the following procedure

to each end of the left and right chassis slides. Use two 8-32 x

• Four phillips head screws - 10-32 x

5/8

inch

• Four lock washers - 0.380 inch O.D. x 0.200 inch I.D.

• Two slide mount spacers (two holes)

• Four phillips head sems screws - 10-32 x

1/2

inch

• Four nut bars (four holes)

3.

Mount the chassis slides to the front vertical upright as shown add-on drive (center bay), use mounting holes

27

and 31, counting from the bottom. Notice that

in

Figure 2-25.

If

this installation to the front vertical upright needs both a slide mount spacer and a nut bar.

RIGHT CHASSIS SLIDE

this

is

a first

NOTE

1.

REPEAT

Figure 2-24 Chassis Slide Bracket Installation

FOR

LEFT

CHASSIS SLIDE.

2-21

CHASSIS SLIDE BRACKETS

CZ·0578

VIEWED FROM FRONT

CABINET FRONT

LEFT UPRIGHT

LOCK

OF

,.

CABINET

SLIDE

SPACER

MOUNT

Whttps://manualmachine.com/

NUT BAR

CHASSIS SLIDE

BRACKET

< PHILLIPS HEAD SCREWS

NOTE

1. REPEAT FOR FRONT RIGHT UPRIGHT.

10-32

X

5/8"

Figure 2-25 Mounting Chassis Slide to Front Upright

4.

Mount the chassis slides to the back vertical uprights nut bar

is

used here with sem screws. Use the same mounting holes as specified in Step 3 above.

VIEWED FROM FRONT

NUT

BAR

OF

CABINET

CHASSIS SLIDE BRACKET

as

shown

PHILLIPS HEAD SEM

10-32 X 1/2"

CZ·OS79

in

Figure 2-26. Note that only a

SCREWS

NOTE

1. REPEAT

Figure 2-26 Mounting Chassis Slide to Back Upright

FOR

RIGHT

LEFT

VERTICAL UPRIGHT

BACK

VERTICAL UPRIGHT.

2-22

BACK

CZ-0749

5.

Mount the electrostatic discharge bracket over the chassis slide bracket on the back left vertical upright. Pass the two sem screws through the two center holes of the chassis slide bracket and fasten them to the nut bar inside. Refer to Figure 2-27. bay), use mounting holes ing holes

10

and 12.

28

and 30.

If

this

is

the second add-on drive (bottom bay), use mount-

If

this

is

the first add-on drive (center

VIEWED FROM BACK

LEFT VIEWED FROM

LEFT

CHASSIS

SLIDE

BRACKET

OF

CABINET

VERTICAL UPRIGHT

ELECTROSTATIC DISCHARGE BRACKET

BACK

"-

"~

PHILLIPS HEAD

SEM SCREWS

10-32 X 1/2"

CZ-0750

Figure 2-27 Mounting the Electrostatic Discharge Bracket

6.

Insert the two cable retainer springs in to the back of the left and right chassis slides as shown in Figure 2-28. Push the cable retainer springs until they latch into place.

7.

Mount an

11/

16-inch cable clamp on to each cable retainer spring,

as

shown. Each cable clamp

should be mounted on inside (drive side) of the cable retainer spring.

8.

Install the drive detent latch on the left vertical upright (back that the drive detent latch will not move freely but

If

this

is

a first add-on drive (center bay), use mounting holes 36 and 37.

add-on drive (bottom bay), use mounting. holes

is

loose enough that it can be adjusted later.

18

and 19.

view).

See Figure 2-29. Ensure

If

this

is

a second

2-23

VIEWED FROM FRONT

OF

CABINET

PHILLIPS SEM SCREW 10-32 X 1/2"

HEAD

CABLE RETAINER SPRING

CABINET SLIDE MEMBER

~_

"

FLAT WASHER /

0.500

INTERMEDIATE SLIDE MEMBER

NOTE

1. REPEAT

FOR

CHASSIS SLIDE

ON

RIGHT SIDE.

Figure 2-28 Installation of Cable Retainer Springs

VIEWED FROM RIGHT SIDE

CABINET

OF

SPACER

/ CABLE CLAMP

11/161NCH

~

/"~

aD

X 0.281

ID

PHILLIPS HEAD SCREW 10-32

X

5/8"

CZ-0751

PHILLIPS HEAD SEM SCREWS 10-32 X 1/2"

~

"

'-

"

'-

.......

......

.......

'-

DRIVE DETENT LATCH

"

CABINET BACK LEFT

VERTICAL

UPRIGHT

Figure 2-29 Installation of Drive Detent Latch

CZ-0752

2-24

2.4.3 Remove the Internal Shipping Brackets and Packing Material Remove the shipping brackets and packing material from inside the drive using the procedure described previously in Paragraph 2.2.3.

2.4.4 Mount the RA81 on the Slides Use the following procedure to mount the drive on its slides.

1.

Install the left and right mounting rails onto the sides of the disk drive as shown in Figure 2-30 using ten 6-32 kep nuts.

RIGHT

NOTES

1.

REPEAT

MOUNTING RAIL

FOR

LEFT MOUNTING RAIL.

-_-'/n

.......

KEP

NUT

6-32 X 5/16"

(5

PL

EACH SIDE)

CZ-0584

Figure 2-30 Installation of Drive Mounting Rails

2.

Remove the HDA to reduce the weight of the drive using the following procedure. Refer to Figures

1.

2.

3.

4.

2-31

and 2-32.

Raise the drive logic chassis. Refer to Paragraph 2.2.3, Step

4. Unplug connector P502 from the read/write module. See Figure 2-31. Unplug connectors P602 and P603 from the preamplifier module. Refer to Figure 2-31. Place the belt tension lever in the release position. Refer to Figure

2-31

2-25

READ/WRITE MODULE

HDA

RELEASED

BELT TENSION LEVER

POSITION

"'@-

ENGAGED POSITION

HDA HOLDDOWN NUTS

(4)

Figure

2-31

5.

6.

7.

8.

-----.

~.

~

CZ-0770

Removal of HDA Cable Connections

Remove the four HDA retaining nuts. Place the positioner lock

in

the LOCK position. Refer to Figure 2-32.

CAUTION

The HDA could

be

damaged

if

the previous step is

not performed.

Remove the HDA from the drive by lifting from diagonally opposite corners. Refer to Figure 2-32.

Place the HDA on a level surface in the vertical position only. Feet are provided

on

the

front cover of the HDA for this purpose.

2-26

CAUTION

Do not place

the

UDA in a horizontal position (on the pulley). The speed and temperature transducers mounted on the bottom

of

the UDA could

be

dam-

aged.

If

the UDA is going to tape the movement

UDA spindle pulley in place to prevent

of

the spindle. Any movement

be

moved

to another location,

of

the spin-

dle could damage the heads.

It

is important to use a good nylon reinforced pack-

ing tape. Masking tape should never

be

used

as

it

not strong enough.

is

Figure 2-32 HDA Positioner Lock.

3.

Extend the cabinet stabilizer as shown in Figure 2-33.

4.

Extend each chassis slide all the way forward until it locks. See Figure 2-34.

A second person is needed to place the drive on the

chassis slides because

PLASTIC

BULKHEAD

WARNING

of

the weight

2-27

FEET

of

the disk drive.

CZ-8021

Figure 2-33 Extending Cabinet Stabilizer

DRIVE

CABINET

SLIDE ASSEMBLY

PHILLIPS HEAD SEM SCREWS

8-32 X 5/16

(2 EACH SIDE)

Figure 2-34 Extending the Chassis Slides

CZ-0753

RA81 DISK DRIVE

•

CZ-0754

5.

With the help of a second person, lift the drive and place it on top of the chassis slides in Figure 2-34. Push the drive toward the back of the cabinet until its mounting rails touch the stop.

2-28

as

shown

6.

Fasten the drive to the chassis slides using four 8-32 x shown.

7.

Extend the drive forward

8.

Replace the HDA using the following procedure.

1.

Ensure that the drive belt

on

the slides.

is

centered on the motor pulley. The other end of the belt should

be even with the top of the nylon rollers on the wing pivot assembly.

5/16

inch phillips head sem screws,

See Figure 2-35.

as

CZ-0767

Figure 2-35 Wing Pivot Assembly

CAUTION

Damage to the HDA, could result

2.

Lift the HDA by grasping two diagonally opposite corners, then lower the HDA over the

if

the

drive

belt, or nylon rollers

drive

belt is not aligned correctly.

four mounting bolts.

3.

Replace the four nuts and washers on the HDA.

4. Connect P602 and P603 to the read preamplifier module on the front of the HDA.

5.

Connect P502 to the read/write module.

6.

Place the belt tension lever in the engaged position. See Figure 2-10.

2-29

7.

Turn the HDA positioner lock counterclockwise to the unlocked position.

9.

Slide the drive back into the cabinet.

10.

Adjust the drive detent latch

so

that it prevents the drive from sliding forward and tighten the

la tch screws.

2.4.5 Program the Drive

Unit Address Plug

Program the drive unit address plug using the procedure described previously in Paragraph 2.3.3.

2.4.6 Connect the Electrostatic Discharge Bracket The electrostatic discharge bracket grounds the disk drive to the cabinet. To complete this ground path, the bottom left screw

on

the drive power supply should be removed. This same screw should then be inserted

through the electrostatic discharge bracket and screwed back into place as shown in Figure 2-36.

~

<tl <tl <tl <tl <tl

cg

ELECTROSTATIC DISCHARGE BRACKET

<tl

cg cg

NOTE

1.

Figure 2-36 Electrostatic Discharge Bracket Details

This ground connection must always

the drive is operated.

To slide the drive forward, remove the screw that holds the electrostatic discharge bracket to the power supply and push on the drive detent latch. Remember to reconnect the electrostatic discharge bracket each

time the drive

is

pushed back into the cabinet.

LEFT DISK DRIVE

REMOVE POWER SUPPLY SCREW TO SLIDE DRIVE

THROUGH

IS SLID BACK INTO CABINET.

FORWARD. REPLACE SCREW

BRACKET EACH TIME THE DRIVE

CAUTION

2-30

BACK

OF

CZ-0755

be

made before

2.4.7 Install the Internal SDI Cables

The two internal SDI cables that exit from the back of the add-on drive must be connected to the top of the I/O

bulkhead assembly. The external SDI cable that connects the drive cabinet to the disk controller must be mounted on the bottom of the tion), a second external SDI cable must be installed. The SDI cables must be connected to the head before the bulkhead wiring for add-on disk drives.

I/O

bulkhead assembly.

is

connected to the drive cabinet. Figures 2-37 and 2-38 show the electrical

Use the following procedure to install the SDI cables.

If

two disk controllers are used (dual-port opera-

I/O

bulk-

AC LIN

POWE CONT

./

ES

~"

R

ROllER

I/O

BULKHEAD

_OUT

c=J c=J

1

.OUTl~

B

1--

I

L-

•

____

I

~~~~

SDI CABLES

!

i I B

110UT

~

ApN'

DRIVE 0

A"rlr-

DRIVE 1

--l

~

?N

I

DRIVE SEQUENCE TERMINAT

OR

CONTROllER

SDI

PORT 0

1

PORT

Figure 2-37 Cabling for a Two-Drive System

SDI

B

NOTES

1. HEAVY LINE INDICATES THE DRIVE

SEQUENCE CABLE.

2-31

CONTROllE

RA

PORT 0 PORT

CZ-0758

1

•

OUTl

AI

B"r

IN

.OUT1~

~NT

AC LIN

~

WER

PO

NTROLLER

CO

f-o

1'--'-..

c:::J c:::J

.OUT1~

c:::J

CJ

.OUT1~

15

n

R

~~

SDI CABLES

DRIVE 0

A"r~-

DRIVE 1

A"rIN~

DRIVE 2

~

!

1/0

BULKHEAD

0

.0.1 0 []

A B A B A

B

NO

TES

1.

ALL

PORT CONTROLLER GO

2. HEAVY LINE INDICATES DRIVE SEQUENCE CABLE.

A CONNECTIONS GO TO SDI

A.

TO

SDI CONTROLLER

ALL

I D

PORT B CONNECTIONS

B.

I I

D

0 0

OUT

lU-

DRIVE SEQUENCE

IN

TERMINATOR

r--

I

AC

I

,

L1\

,--

I I

L

•

POWER CONTROLLER

I

!

EXTERNAL DRIVE / SEQUENCE CABLE

c::J

~

--

__

I

,

I/O BULKHEAD

DRIVE 3

--,.

__

J

---1

__.J

CbttJCb

J6

J5 J4

l~

J3

SDI CABLES

I I

o 0

0

A OUT

IN

I

CZ-0759

Figure 2-38 Cabling for a Three- and Four-Drive System

1.

Locate the Port A SDI cable where it exits the back of the disk drive. Find the end of the cable and plug the connector into Port A on the top of the tion key.

2.

Screw the Port A SDI cable shield terminator into the

will

the disk drive

captive hardware. Refer to Figure 2-39.

3.

Repeat Steps 1 and 2 for the Port B SDI cable.

4.

Plug the SDI cable from the first disk controller into the Port A connector on the bottom of the I/O

bulkhead assembly. Note the orientation key.

need separate screws to mount the shield terminator. Later versions

2-32

I/O

bulkhead assembly. Note the orienta-

I/O

bulkhead assembly. Early versions of

will

have

EXTERNAL SOl CABLES

Figure 2-39 Connecting SDI Cable Shield Terminators

5.

Screw the shield terminator of this cable into the

6.

If

a second disk controller

is

used, mount its SDI cable into Port B

bly.

M~;;:NG~

SCREWS

1/0

BULKHEAD

FOR

SECOND

ADD-ON

1/0

BULKHEAD

FOR

FIRST

ADD-ON

I/O

bulkhead assembly

on

the

CZ-0764

as

in

I/O

bulkhead assem-

Step

2.

2.4.8 Mount the An

I/O

bulkhead assembly must be installed

Screw the

I/O

Bulkhead

on

the back base of the drive cabinet for each add-on drive.

bulkhead assembly on to the back of the cabinet as shown in Figure 2-40. Mount the bulkhead assembly in the drive 1 location for the first add-on drive. Mount the the drive 2 location for the second add-on drive.

2.4.9 Install the Drive Sequence Cables Figures 2-37 and 2-38 show the electrical wiring diagrams for add-on drives.

Use them

installing drive sequence cables, as follows.

1.

Unplug the drive sequence cable from the output connector on drive 0 (top drive) done by raising the back cover and removing

2.

Plug the drive sequence cable described in Step 1 into the output connector

it

from the cable clamp. Refer to Figure 2-41.

add-on, or into the output connector on drive 2 for two add-ons.

3.

Install the new 8-foot cable between the output connector of drive 0 and the input connector on drive

1.

If

a second add-on drive has been installed, connect another 8-foot drive sequence cable

between the output connector of drive

1 and the input connector of drive

2-33

I/O

bulkhead assembly in

as

a reference when

on

drive 1 for one

2.

I/O

•

./

....

~~-I/O

1/0

BULKHEAD

FOR

SECOND

ADD-ON

DRIVE SEQUENCE CABLE BULKHEAD

BULKHEAD FOR FIRST ADD-ON

CZ-0772

Figure 2-40 Mounting the

I/O

Bulkhead Assembly

2-34

DRIVE SEQUENCE CABLES

Figure

4.

Tie-wrap the drive sequence cable to the existing SDI cable clamps.

5.

Add a cable between the drive sequence bulkheads is

used. Refer to Figures 2-38 and 2-41.

2-41

Drive Sequence Cable Installation

on

each drive cabinet when a second cabinet

2-35

CZ-0769

2.4.10 Connect AC Power Plug the ac power cord from each add-on into the ac receptical on the power controller

cabinet. Refer to Figure 2-42.

J6

at

the base of the

AC PLUG

DRIVE 1

Figure 2-42 Power Controller AC Receptacles

2.4.11 Route and Clamp the Cables The cables from the add-on drives must

now

the slide rails. Route and clamp the cables

1.

Mount the spacers and cable clamps into the back vertical uprights this

is

the first add-on drive (center bay), mount the cable clamps in hole 44 of the left and right vertical uprights. mounting hole

If

this

is

the second add-on drive (bottom bay), mount the cable clamps in

23

of the left and right vertical uprights.

CZ-07S7

be routed and clamped to allow the drive to be extended

as

follows.

as

shown in Figure 2-43.

2-36

on

If

KEP

NUT

10-32 X 3/8"

STANDOFF

10-32,6-32

FLAT WASHER

0.375

OD X 0.156

ID

CABLE CLAMP 3/8"

Figure 2-43 Connecting Cable Clamps to Uprights

2.

Use the

15

cable ties provided with each add-on to route and tie the cables where indicated in Figure 2-44. Three cable ties are used on the ac power cord and seven ties are and drive sequence cables.

CZ-0771

used on the SDI

3.

Tie wrap the cables to the clamp mounted previously on the back of the chassis slides.

4.

Form a service loop approximately eight inches in diameter in the cables as shown in Figure 2-44. Fasten the output of the service loop with the cable clamps installed uprights in Step 1 above.

5.

Tie wrap the cables

at

the bottom of the cabinet to the cable clamp

2-37

at

mounting hole

on

the vertical

14.

DRIVE CIRCUIT BREAKERS

POWER CIRCUIT

CONTROLLER

BREAKER

AC

OUTLETS FOR

POWER ON FRONT

DRIVE OF

POWER CONTROLLER

LOCAL/REMOTE

DISK DRIVES

POWER LAMP

SWITCH

CZ-0766

Figure 2-44 Cable Routing and Clamping

2.5 RA81 DRIVE DIAGNOSTIC CHECKOUT

The paragraphs that follow describe how to run the drive-resident diagnostics using the diagnostic terminal. Use this procedure to verify the proper operation of each RA81 Disk Drive after installation.

NOTE

Checkout procedures should

be

used only

by

trained

maintenance personnel.

2.5.1 The Diagnostic Terminal

A field service diagnostic terminal used to communicate with the RA81

is

stocked with every spares kit. The diagnostic terminal utilizes a standard ASCII keyboard and an RS232 interface. Any EIA-compatible terminal set

at

300 baud can be used to communicate with the drive to run the diagnostic tests. See Appen-

dix A for instructions on how to use this terminal.

2-38

2.5.2 Applying Power to the Drive Use the following procedure to apply power to the drive.

1.

Verify

that

the ac circuit breakers on the power control unit and each disk drive are in the

position. Refer to Figure 2-44.

2.

Plug the ac power cord from the drive into the ac power receptacle on the power control unit the bottom of the cabinet if this

3.

The

LOCAL/REMOTE

sure drive operation since

4. Plug the control unit ac power cord into an external ac power source.

5.

Place the ac circuit breaker on the power control unit in the

switch on the power controller must be in the LOCAL position to en-

no

is

an add-on drive.

power sequencing cable

is

used.

2.5.3 Checkout Use the following procedure to verify drive operation.

1.

Ensure the drive

is

in the off-line state by placing both port select switches (A and B) in the

position.

2.

Place the

RUN/STOP

switch in the

OUT

position.

ON

OFF

at

position.

OUT

3.

Open the logic access cover and raise the servo and personality modules.

4.

Make sure

5.

Place the ac circuit breaker on the back of the drive in the tics (hardcore test sequence) run automatically when the drive circuit breaker front-panel lights turn on while the drive runs these diagnostics. the hardcore test sequence, the front-panel indicators

that

all cable connectors are firmly seated in the mating connectors.

ON

position. Internal drive diagnos-

If

the drive successfully passes

go

off in 3-4 seconds.

is

turned on. All

If

an error code

displayed on the front-panel indicators, refer to the fault isolation procedures in the RA81 Ser-

vice Manual.

NOTE

Do not have the diagnostic terminal connected to the

at

drive tests to fail.

6.

The drive idle loop tests start automatically about 30 seconds following the end of the hardcore test sequence. Allow about sor LEDs for a display of a hexadecimal E7 after a successful completion. Errors are indicated by a fault code in the front-panel lights. Refer to the fault isolation procedures in the

Service Manual.

7.

Connect the diagnostic terminal to the RS232 port connector in the drive. Refer to Figure 2-45.

this time. Doing so could cause the hard core

30 seconds for the execution of these tests. Observe the microproces-

is

RA81

2-39

RS232 DIAGNOSTIC

TERMINAL

CONNECTOR

" "

, '

DIAGNOSTIC TERMINAL POWER CONNECTOR

Figure

2-45

P306

:[]lil

0

P307

0

o 0

000000000

MICROPROCESSOR

MODULE

TOP

VIEW

DO

OF DRIVE

DODD

Diagnostic Terminal Connections

MOTOR START CAPACITOR

CZ-0773

2-40

8.

Key

in a CTRL

mode. A diagnostic prompt (RA81

9.

Depress the continue

feature of the terminal allowing the testing to be continuous.

C (Te) on the terminal keyboard to place the drive

»

is

then displayed by the terminal.

NOTE The drive idle loop test sequence is repeated continuously until a CTRL C complete the current sequence before displaying the RA81> prompt.

(CaNT)

key on the terminal. This disables the automatic X-On, X-Off

(TC)

is input. The test

will

in

the diagnostic monitor

10.

Run the entire drive sequence test with the drive spun down by typing

is

nal. As the sequence

IRA81-COMPlETED IRA81-COMPlETED IRA81-COMPlETED

IRA81-COMPlETED

TEST:DIAG TEST:DIAG

TEST:DIAG

executed, the following messages are displayed by the terminal:

SUBTEST:xx SUBTEST:xx SUBTEST:xx

SUBTEST:xx

RUN

DIAG on the termi-

RA8h

The microprocessor LEDs increment and then settle

being executed. The display of the prompt indicates successful completion of the test sequence.

The following terminal display means that one of the tests has failed. When a test fails, refer to the fault isolation procedures

IRA81-TEST:DIAG

SUBTEST:xx

in

the

ERROR:xx

UNITxxx

RA81

Disk Drive Service Manual.

on

a hexadecimal E7 while the sequence

IRA81-FRU-xxxx,xxxx,xxxx

is

11.

After passing the above test, spin up the drive by pushing the position. The drive should respond with the following message:

FRONT

PANEL

FUNCTION

A diagnostic sequence The microprocessor LEDs remain off while the drive spins up. When it

display the E7 code and the terminal displays the following:

IN

PROGRESS

is

automatically executed during spin-up.

2-41

RUN/STOP

is

up to speed, the LEDs

.

switch to the

IN

%RA81-COMPLETED %RA81-COMPLETED %RA81-COMPLETED

TEST:DIAG TEST:DIAG TEST:DIAG

SUBTEST:xx SUBTEST:xx SUBTEST:xx

12.

13.

14.

15.

%RA81-COMPLETED

TEST:DIAG

SUBTEST:xx

RA8h

The terminal displays the most likely above sequence. The diagnostic takes about

is

prompt

Manual

displayed.

will

is

displayed, respond by typing in

for the list

25

step until the prompt

Type

RUN should display messages similar to those when the drive was spun down. during this test, the terminal LEDs increment and then settle on a hexadecimal E7 while the sequence (about 7 minutes).

When the the drive

As soon

entire drive sequence diagnostics are once again initiated.

If

any errors occur during this time, the terminal

to the

After the above test has run for the loop mode and the test.

DIAG to initiate the entire drive sequence test with the drive spun up. The terminal

RA81>

in

a continuous loop mode, halting only on an error.

as

the drive returns with the

RA81

Service

FRU

to replace if an error condition

45

seconds to complete.

display the most likely

RA81>

minutes without an error, key

prompt, respond by typing

will

of

FRUs.

FRU

SET

Run

indicate the most likely failing

Do

not proceed to the next

If

an error

to replace. The microprocessor

DIAG

this test sequence for 25 minutes.

LOOP=HALT

in

CTRL C (TC)

is

noted during the

is

indicated

is

being executed

to place

RUN

DIAG. The

FRU.

to terminate

Refer

16.

17.

18.

19.

As soon as the drive returns an RA81 > prompt, type

EXIT

to exit the diagnostic monitor mode.

NOTE

CTRL Z (lZ)

One

mode. pushed in to accomplish the same.

Push in the desired port select button to place the drive in an available state. Run the main system diagnostics.

Upon completion personality modules back into their proper positions, and then close and secure the logic access cover on the drive.

of

all tests on each drive, disconnect the diagnostic terminal, fold the servo and

can also be used to exit the monitor

or

both

of

the port select switches can be

2-42

3.1.3 UNIT/READY

The READY indicator is

in

a read/write ready condition. The READY indicator

is

in the

RUN

position and the

The numbered switch cover over the READY indicator light

is

preceded by a successful (fault-free) spin-up sequence and indicates that the drive

will

RUN

light

only come

is

on.

The READY indicator goes off during seek operations.

is

also a logic plug which distinguishes one

on

when the

RUN/STOP

switch

drive from another in multi-drive arrangements. The switch cover has a unique cam-coded configuration that corresponds to the drive unit number. Refer to Paragraph 2.3.3 for details

on

how

to program the logic plug. The cam-coded switch sets up a unit code corresponding to the drive number when plugged into the mating cam-encoded switch located behind the READY indicator light. Refer to Figure 3-2. Drive selection

is

accomplished when the address

on

the drive select lines matches the code established by the switch

cover.

B

---

READY INDICATOR AND

MICROSWITCH CONTACTS

LAMP

~~-CODED

--

SWITCH COVER

----------

Figure 3-2 Cam-Coded Switch Cover

3.1.4 WRITE PROT

The

WRITE switch places the drive drive are disabled in this mode.

Releasing the push button enables the write circuits and turns off the WRITE the disk

PROT switch

is

not read/write ready, it

is

in

the write protect mode and turns

a double-action push button with a built-in indicator light. Pushing

on

the indicator light. The write circuits of the

is

always write protected.

3-5

CZ-0756

in

on

this

PROT indicator light. When

3.1.5 A and B

Port

Select Switches

The RA81 Disk Drive has two port select push button switches. These double-action switches (A and B) have built-in lights that indicate the port through which the drive with dual-port abilities,

anyone

of three modes can be selected with the A and B switches.

is

being accessed.

If

the drive

is

equipped

• Port A operation only

• Port B operation only

• Port

When the controller. During the opposite condition, only are

in

at the same time, either Port A or Port B can be accessed by the controller. When either or both

buttons are out, the drive The drive

A/B

(programmable) operation

Port A button

will

indicate that it

is

pushed in and the Port B button

is

out, only Port A can be accessed by the

Port B can be accessed. However, when both push buttons

is

off-line to the port or ports indicated.

is

on-line to controller A by lighting the A switch, on-line to controller B by lighting the B switch, or not on-line to either controller by leaving both lights off. During normal operation, the indicator lights not always

follow A, the indicator light for A indicator

will

never be on

at

the same time. The

on/off

conditions of the port indicator lights

changes in switch positions immediately. For example, if the drive

will

be

on.

If

the switches are then reset for access by controller

stay

on

until the drive

is

actually on-line to controller

B.

Then and only then

is

on-line to controller

B,

will

the indicator

do

the A

lights change state.

3.2 CIRCUIT BREAKERS

Each disk drive has a circuit breaker on the back panel as controller in the bottom of the cabinet. Access to these breakers The breakers and the spindle motor. This breaker must be

on

the drive control the application of ac power to the drive dc power supply, the cooling fans,

on

before the drive

well

as

a breaker

is

through the back door of the cabinet.

will

operate.

on

the back of the power

The power controller breaker regulates the application of ac power to all assemblies within the RA81 cabinet and must be turned on before the drive breaker can be effective.

3.3 DRIVE OPERATION

3.3.1 Spin-Up

Push in the

immediately and the

RUN/STOP

READY

button on the drive front panel to spin-up the drive. The

indicator

will

come on as soon as the drive has completed the spin-up cycle.

RUN

indicator

will

light

3.3.2 Spin-Down

Release the

indicator

RUN/STOP

will

go

off immediately and the

button (out position) on the drive front panel to stop the drive. The READY

3.3.3 Removing'RA81 Power

Do a spin-down

as

described above. After the back panel off and disconnect the cord going to the power controller. This drive.

3.4 CUSTOMER CARE

The airfiIter in the logic chassis assembly should be inspected and cleaned every six months.

3.4.1 Air-Filter Removal

To remove the air filter, proceed as

RUN

follows:

indicator

RUN

will

go

off

as

soon

as

disk rotation stops.

indicator has gone off, turn the drive breaker

will

remove all power to the

3-6

on

the

1.

Pull down the access door

2.

Take hold of the filter material and pull outward until it

3.4.2 Cleaning

1.

Wash the foam air filter in warm water using a mild detergent.

2.

Rinse the filter material with clear water and then allow to dry.

3.4.3 Replacement

1.

Slide the filter into place inside the bezel.

2.

Close the access door.

on

the front bezel of the drive. Refer to Figure 3-3.

NOTE

The hinge mechanism can be damaged placed on the open access door or

if

it

NOTE

Replace the filter 7422816-00.

by

ordering DIGITAL part no.

if

tools are

is leaned on.

is

free of the bezel.

Figure

AIR FILTER

3-3

Air-Filter Removal

OPERATOR CONTROL PANEL

""

./

""

./

,/

CZ-0599

3-7

3.1.3 UNIT/READY

The READY indicator

is

in

a read/write ready condition. The READY indicator

is

in

the

RUN

position and the

is

preceded by a successful (fault-free) spin-up sequence and indicates that the drive

RUN

light

is

on. The READY indicator goes off during seek operations.

will

only come

on

when the

RUN/STOP

switch

The numbered switch cover over the

READY indicator light

is

also a logic plug which distinguishes one drive from another in multi-drive arrangements. The switch cover has a unique cam-coded configuration that corresponds to the drive unit number. Refer to Paragraph 2.3.3 for details on

how

to program the logic plug. The cam-coded switch sets up a unit code corresponding to the drive number when plugged into the mating cam-encoded switch located behind the tion

is

accomplished when the address

on

READY indicator light. Refer to Figure 3-2. Drive selec-

the drive select lines matches the code established by the switch

cover.

B

--

READY INDICATOR

AND

MICROSWITCH

LAMP

CONTACTS

~~-CODED

--

SWITCH

COVER

-------

Figure 3-2 Cam-Coded Switch Cover

3.1.4 WRITE PROT

The WRITE

switch places the drive in the write protect mode and turns

drive are disabled in this mode. Releasing the push button enables the write circuits and turns off the WRITE

the disk

PROT

is

not read/write ready, it

switch

is

a double-action push button with a built-in indicator light. Pushing in

on

the indicator light. The write circuits of the

is

always write protected.

3-5

CZ-0756

on

this

PROT indicator light. When

3.1.5 A and B

The

RA81 have built-in lights with dual-port abilities,

•

Port

Select Switches

Disk Drive has two port select push

that

Port

A operation only

Port

B operation only

Port

A/B

(programmable) operation

indicate the

anyone

of

port

three

through

modes

button

which the drive is being accessed.

can

switches. These double-action switches

be selected with

the A and

If

the drive is equipped

B switches.

(A

and

B)

When controller. During the opposite condition, only are buttons

The lighting the B switch, the indicator lights will never be on not always follow changes in switch positions immediately. A, indicator will lights change state.

the

Port A button

in

at

the

same

time, either

are

out, the drive

drive will indicate

the indicator light for A will

stay

on until the drive

is pushed in

is

off-line to the

that

it is on-line to controller A by lighting

or

not on-line to either controller

and

Port A or

at

the

be

on.

is

actually on-line

the

Port B button

Port B can

port

or

same

time.

If

the

switches

be

ports indicated.

by

The

to

controller

3.2 CIRCUIT BREAKERS

Each

disk drive has a circuit controller in the The

breakers on the drive control

and

the spindle motor. This

The

power controller

and

net

must

bottom

be

turned

breaker

of

the cabinet. Access to these breakers is through

breaker

regulates

on before the drive

on

the

application

must

the

back

panel as well as a

of

ac

power to the drive

be

on before the drive will operate.

application

breaker

of

can

3.3 DRIVE OPERATION

3.3.1 Spin-Up

Push in immediately

the

RUN/STOP

and

the

button

READY

on

the

drive

indicator will

front

panel to spin-up

come

on as soon as the drive has completed the spin-up cycle.

is

out, only

be

accessed. However, when both push buttons

accessed by the controller.

the

leaving

on/off

are

ac

be

both

conditions

For

example,

then reset for access

B.

power to all assemblies within effective.

the

Port A can

A switch, on-line to controller B by

lights off. During normal operation,

of

the

if

the drive is on-line to controller

Then

and

only

breaker

dc

drive.

on

the

power supply, the cooling fans,

The

be accessed by the

When

port indicator lights do

by

then

the

back

RUN

either

controller

will the indicator

back

of

door

of

the cabinet.

the

RA81 cabi-

indicator will light

B,

the

or

both

the A

power

3.3.2 Spin-

Release indicator will go

Down

the

RUN/STOP

off

immediately

button

3.3.3 Removing'RA81 Power

Do a spin-down as described above. back

panel

off

and

disconnect the

drive.

3.4 CUSTOMER CARE

The

air' filter in

the

logic chassis assembly should

3.4.1 Air-Filter Removal

To

remove

the

air

filter, proceed as follows:

(out position) on and

the

After

cord

RUN

going to

indicator will go

the

RUN

the

drive front panel

off

indicator has gone off,

the

power controller. This will remove all power

be

inspected

3-6

and

to

stop

the

drive.

as soon as disk rotation stops.

turn

the

drive

cleaned every six months.

The

READY

breaker

on

to

the the

1.

Pull down the access door

2.

Take hold of the filter material and pull outward until it

3.4.2 Cleaning

1.

Wash the foam air filter

2.

Rinse the filter material with clear water and then allow to dry.

3.4.3 Replacement

1.

Slide the filter into place inside the bezel.

2.

Close the access door.

on

the front bezel of the drive. Refer to Figure 3-3.

NOTE

The hinge mechanism can be damaged if tools are placed on the open access door

in

warm water using a mild detergent.

or

if

it is leaned on.

is

free of the bezel.

NOTE

Replace the filter 7422816-00.

by

ordering DIGITAL part no.

Figure

AIR FILTER

3-3

Air-Filter Removal

OPERATOR CONTROL PANEL

.,;

,,/

./

.,;

,./

,,/

CZ-0599

3-7

DIAGNOSTIC TERMINAL

APPENDIX A

INSTRUCTIONS

This appendix provides instructions on

how

to use the field service diagnostic terminal.

A.I INTRODUCTION Refer to Figure A-I. The terminal contains a two-level LED display and a keyboard. The display holds a maximum of 32 characters keyboard contains a standard ton

is

the default character displayed when the button

at

a time while an internal buffer stores 2 K characters for the display. The

ASCII set of alphanumeric characters. The larger character

is

pushed.

DISPLAY SCROLL SWITCH

'

;~\i:;H;;l;l;5f;t;

I

"'OJilODIIID

~

~ ~

, f

EQUIPMENT CORPORATION

<'

,

0

~~

{.

on

each keybut-

Figure A-I Field Service Diagnostic Terminal

CZ-0768

A-I

A.2

SHIFT

KEYS To obtain one of the other three possible characters shown on any keybutton, one of the three shift keys the right side of the terminal must be used. When the upper shift key neous with a keyboard button, the left-most character

is

dislayed.

on

the terminal

is

pushed simulta-

on

As an example, push the middle shift key and the number 5 key. The letter K lower shift key and the

CONTROL CHARACTERS

A.3

A control character (e.g., key.

Push the CTRL key. Push one of the shift keys simultaneous with the appropriate letter key.

Example: A

1.

2.

3. CONTINUE (CONT) AND CLEAR (CLR) KEYS

A.4

TZ

is

Push CTRL key Push the upper shift key

Simultaneous with step

The X-On, X-Off feature

0 key, results in the letter Q being displayed.

TC)

is

obtained by using the

CTRL

key, the shift keys, and the appropriate letter

desired. The following steps should be used.

on

the right-hand side of the drive

2,

push the number 0 key.

is

enabled when power

is

applied to the terminal. The

is

displayed. Pushing the

CONT

key disables the automatic X-On, X-Off feature, while the CLR key re-enables the feature. Keeping this feature in automatic allows the display buffer to fill and then to automatically transmit a signal (X-Off) to the microprocessor. This signal stops all transmission of data to the display buffer until the buffer time, the terminal automatically sends an

A.5

X-ON, X-OFF KEYS These keys manually control the display buffer of the terminal. X-Off signal has stopped all transmission to the buffer. The

X-On signal to re-enable transmission.

If

the display buffer

X-On key

is

used to reload the buffer with

is

unloaded. At this

is

full, an automatic

new

information even though the buffer has not been read. The X-Off key may be used to stop the loading of the buffer even though the buffer

ple, the automatic X-On, X-Off feature

messages to the terminal. These messages are being sent

is

disabled by the

CONT

at

a faster rate than can be read by the human eye.

key and the diagnostics are inputting test

is

not full. For exam-

Pushing the X-Off key stops the diagnostic testing (and the messages). This enables the user to read the

display and manually scroll through the buffer.

A.6

DELETE The delete key

be pushed causing a backslash now

be keyed

RUN

DIAF\F\G

The command

DISPLAY SCROLL

A.7 The display scroll switch display within the The display scroll switch The display scroll switch

KEY

is

used to correct mistakes in keyboard entries. Once a mistake

(\)

to be displayed with the last character input. The new character may

in.

For example, if

RUN

DIAG

RUN

DIAF

is

now input correctly.

was

keyed in, the delete key could be used as follows.

SWITCH

i~

located on the left side of the terminal. Its function

2K

display buffer. Long messages cannot be read all

is

moved in the upward direction to scroll the display forward through the buffer.

is

moved downward to scroll the display backward through the buffer.

at

is

discovered, the delete may

is

to back up or advance the

once

on

a 32 character display.

A-2

A.8 BREAK KEY The break key transmits a break character when pushed. Its purpose is

not used in RA81 diagnostic operation.

A.9

CR

This key

KEY (CARRIAGE

is

pushed after typing a command string. Its effect

RETURN)

is

that

is

the same as a VT 1 00 break key.

of an enter key on a computer.

It

A.tO

ESCAPE

KEY This key transmits an escape character when pushed. Its purpose not used in RA81 diagnostic operation.

is

the same as a VT100 escape key.

It

is

A-3

RAS1

USER GUIDE

EK-ORAS1-UG-001

Your

comments

and

suggestions

will

help

publications.

What

is

your general reaction to this manual? In your

written, etc.? Is

What

faults or errors have you found in the manual?

~

easy to

us~

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

us

in

our continuous effort to

judgment

~~~~~~~~~~~~~~~~~~~-

Reader's Comments

improve

is

it complete, accurate, well organized, well

the quality

and

usefulness of

our

Does this manual satisfy the need you think it was intended to satisfy?

Does it satisfy your needs?

o Please send me the current copy

the remainder

Name Title

Company~~

_~~_~

___________________________________________

Department

Additional copies

Digital Equipment

of

_________

~_~~

of

__

~~~~~

of

DIGITAL's

____

~_~

technical documentation.

__ ~ ____ ~ __

~_~

__________ ~ __ ~ __

this document are available from:

Corporation

___

~~_

the Technical Documentation Catalog, which contains information

Street

_

C~y

__ ~ __

__

State/Country

_

Zip

Why?

_~~~

_________________

______________

444 Whitney Street Northboro,

Attention: Communications Services

Ma

01532

(NR2/M

15)

Customer Services Section

_~~_~~~_~~~~_

____________________________________________________________

__

on

____ ~ __

~~_~~~_~~_

_

Order No.

__

EK_-_O_R_A_S_1_-U_G_-_O_O_1

ex

______

_

______________________

DO

NOT

Fold

TEAR

- FOLD HERE

Here---------------------

AND

TAPE

momoomo

BUSINESS

FIRST

CLASS

POSTAGE

WILL BE PAID

Digital Educational 12

Crosby

Bedford,

PERMIT

Equipment

Services/Quality

Drive,

MA

01730

REPLY

NO.33

BY

ADDRESSEE

Corporation

BU/E08

MAIL

MAYNARD,

Assurance

MA.

111111

No

Postage

Necessary

if

Mailed

United

in

the

States

Digital Equipment

Corporation.

Bedford,

MA

01730

TECHNICAL DOCUMENTATION

CHANGE NOTICE

EK-ORA81-UG-CN2

Addendum

User

This Drive notifieSo'Ur on-line controllers This

for

This

(EK-ORA81-UG-CNl).

change

User

to

addendum

the

new

information

notice

Guide customers

one

are

shipping

to

RA8l

Guide

updates

connected also

replaces

(EK-ORA8l-UG-OOl)

information

(EK-ORA8l-UG-OOl).

that

controller

in provides pallets

the

a

a new

and

Disk

disk

at

dual-port

unpacking

unloading

in

drive

a

time

the

RA8l

This

change

addendum

can

only

when

arrangement.

procedure

ramps.

Disk

be

two

notice

Copyright

All

rights

Printed

Digital

Equipment

©

in

1984

reserved

U.S.A.

by

Digital

Corporation.

Equipment

Corporation

Colorado Springs, Colorado

80919

Page

2

Replace

(EK-ORA81-UG-001)

1.3.3 Multiple

Dual-Port

disk controller added permits

Figure either drive change

storage

a

second 1-5. controller

can

only

in 200-millisecond controller.

section

Capability drives

used)

~apacity

controller

When

two can

be

on-line

controller

microcode

can

(Figure

controllers be

access

CHANGE

1.3.3 with

(the

be

number

operated

to

selected

to switch-over

NOTICE

in

the

this

1-4).

be

connected are to

one

controller

requires

RA8l

new

5eCtion-I:3.3.

depends

from

a

Also,

connected

access

the

process

User

on single a

dual-port

to

a

in

the

drive;

at

execution

in

Guide

the

type

controller

subsystem.

this

however,

a

time.

of

a

the

drive

of

for

feature

See

manner,

Any

100-

to

and

a

Page

3

Replace

Figure

(EK-ORA8l-UG-001)

DISK DRIVE

CHANGE

2-1

with

NOTICE

in

this

DRIVE CORDS GOING TO CONTROLLER

120V

60 POWER DEC NO. A-P5-1700083-23

240 V 50 POWER DEC NO. A-P5-1700083-24

~

figure.

Hz

CORD

Hz

CORD

~

POWER

PLUG CONFIGURATION

G

.

@

Guide

Figure

POWER

2-1

CONTROLLER

RA8l

. PLUGS GOING TO

240 V, 50 20A 1-PHASE USED WITH

240 V, 50 30A

1-PHASE USED WITH H874E POWER

Electrical

120 V 60 30A 1-PHASE

POWER

Hz

H874B

CNTRL

Hz

.

CNTRL

Plugs

WALL

OUTLET

PLUG CONFIGURATION

W~

Y~G

and

Receptacles

NEMA = L5-30P

= 12 - 11193

DEC

NO.

NEMA DEC NO.

NEMA NO. DEC

12-11192

L6-30 P

ND-

12-16886-00

L6-20 P

CX-392A

Page

4

2.2.1

When

Unpacking

delivered,

container

2-2.

Use

remove

1.

2.

3.

4.

Replace

section

(EK-ORA8l-UG-OOl)

the

System

the

disk

the

it

from

Cut

the

Remove

attached

following

the

the carton.

pallet.

outside

the

to

two

cabinet. Remove

the

shipping

materials. Check

external service

the

or

cabinet

damage.

sales

CHANGE

2.2.1 with

on a Shipping

drive

the

wooden

procedure

shipping

unloading

carton

and

Report

office

NOTICE

in

the

this

cabinet

shipping to

straps

ramps

associated

any

and

new

is

unpack

and

damage

to

RA8l section

Pallet

packed

pallet

and

packed

all

the

local

User

2.2.1

in

shown

the

lift

on

the

top

equipment

associated

equipment

to

the

carrier.

Guide

a

cardboard

in

cover

of

the

packing

for

DIGITAL

Figure

and

off

disk

any

field

5.

6.

7.

8.

Keep a

Remove

cabinet

2-2. Slide Attach

the

grooved

strip Screw

so

that

Two due

all

damage

the

to

the

shipping

the

on

front

the

cabinet

the

persons to

packing claim

four

the

two

end

cabinet

the

materials

is

shipping

pallet.

brackets

unloading.

of

each

of

·the levelers

rests

are

needed

weight

NOTE

filed.

bolts

ramps

ramp

pallet.

on

WARNING

of

the

and

Refer

off

to

board

See

(Figure

the

to

perform

cabinet.

receipts

that

to

the

over Figure

2-4)

rollers.

fasten

the

insert

cabinet

pallet

the

all

the

in

levelers.

by

mating

2-3.

the

in

case

drive

Figure

fitting

metal

way

step

up

9.

Carefully

roll

the

drive

cabinet

down

the

ramps.

Page

5

10.

11.

Wheel Adjust

with

2-4.

the

cabinet

levelers floor

to

the

downward

and

the

desired

until

cabinet

location.

solid

is

level.

contact

See

is

made

Figure

Page

6

Replace

Figure

(EK-ORA8l-UG-OOl)

CHANGE

2-2

with

UNLOADING

RAMPS

this

NOTICE

in

RA8l

figure.

User

Guide

Figure

2-2

Unpacking

the

Disk

CX-393A

Cabinet

Page

7

Replace

Figure

(EK-ORA81-UG-OOl)

CHANGE

2-3

with

this

UNLOADING

PROVIDED)

(TWO

NOTICE

in

RA81

figure.

RAMP

User

Guide

SHIPPING PALLET

SECOND RAMP BOARD HERE

Figure

2-3

Ramp

ATTACHES

Installation

on

Shipping

CX-394A

Pallet

Page

8

Replace

Figure

(EK-ORA81-UG-OOl)

CHANGE

2~4

with

this

NOTICE

in

RA8l

figure.

User

Guide

Figure

2-4

Cabinet

Leveler

Feet

CX-39SA

Adjustment

F

rOil:

To:

SubJ:

DONNER::MURRAYF SALAZ FYI

20-HAY-1986

08:40

Fro,,:

To:

8672:

CO'1E

SubJ:

TO:

RA81

SUBJECT:

USER'S

RA81

On

It,.,

Lower

Bezel

i n t r u

abilit~

of

it¥.s

1.

DOCUMENTATION.

T h

to

6

aonths

b.

Blitzed the is

available.

w i

11

:

~ROW~~

T: : HURRAY

HARDWARE

T'

ill

Ch.~sis

Cc.ver,

due e d.

R A 8 1 S e r y i

R A S 1 U

be

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Digital Equipment RA81 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual