HP 1000 A990 Installation And Service Manual

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HEWLETT

PACKARD

HP

20-Slot

Installation

1000 A990

System/Computer

and

Service

Manual

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.:~

HEWLETT

PACKARD

H P 1

000

A990

20-Slot

System/Computer

Installation and Service Manual

Manual Part No. 02959-90002
E0292

Measurement & Control Systems Dlvison

11000 Wolfe Road

Cupertino, CA 95014

Printed in U.S.A. February 1992

First Edition

NOTICE

The information contained

HEWLETT-PACKARD
INCLUDING, BUT NOT
FITNESS

FOR A PARTICULAR

contained herein or for

MAKES

LIMITED

incidental or consequential damages in connection with the furnishing,

performance, or use of this
Hewlett-Packard

ment that is not furnished

assumes no responsibility for the use or reliability of its software on equip-

by

This document contains proprietary information which is protected

in

this document is subject to change without notice.

NO

WARRANTY

TO,

THE

OF

ANY

IMPLIED

KIND

WITH

WARRANTIES

REGARD

OF

PURPOSE. Hewlett-Packard shall not be liable for errors

material.

Hewlett-Packard.

by

copyright. All rights are
reserved. No part of this document may be photocopied, reproduced, or
language without the prior written consent of Hewlett-Packard Company.

RESTRICTED
Use,

duplication, or disclosure

subparagraph
DFARs

RIGHTS

(c)

(1)

252.227.7013

LEGEND

by

(ii) of the Rights

the Government is subject to restrictions as set forth

in

Copyright © 1992

Technical Data and Computer Software clause at

by

HEWLETT-PACKARD

2

COMPANY

TO

THE

MATERIAL,

MERCHANTABILITY AND

translated to another

in

Safety and Regulatory Information

For your protection, this product has been tested to various national and international
regulations and standards. The scope of this regulatory testing includes electrical/mechanical
safety, radio frequency interference, ergonomics, acoustics, and hazardous materials. Where
required, approvals obtained from third-party test agencies are shown on the product label.
In addition, various regulatory bodies require some of the information under the following
headings.

USA (Radio Frequency Interference)

The United States Federal Communications Commission (in 47CFR Subpart J, of Part

15)

has specified that the following notice be brought to the attention of the users of this product:

Warning

o

This equipment generates, uses, and can radiate radio frequency

if

energy, and
tions

manual, may cause interference to radio communications. It

not installed and used in accordance with the instruc-

has been tested for compliance with the limits for Class A computing
devices pursuant to Subpart J
designed

ence. Operation

to

provide reasonable protection against such interfer-

of

this equipment in a residential area is likely

of

Part

15

of

FCC

Rules, which are

to
cause interference, in which case the user, at his own expense, will
be required to take whatever measures may be required

to

correct

the interference.

Japan (Radio Frequency Interference)

The following notice

is

for users of this product in Japan:

c::.

0)~11l

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~

11.

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Vf

~

:r

/

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(V

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it'={;

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-r

Japanese Radio Frequency Interference

fa

~

in (ttli

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W~~§~~L~m~M~~

Ie

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L L

jo

J)

i T u

t.:

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tf

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-5

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United Kingdom (Telecom Declaration)

This product is approved under approval number
public telecommunication systems within the United Kingdom.

NS/G/1234/J/1()()()()3

for indirect connection to

Europe (Data Communications)

The remote support interface conforms to
connection to a public telecommunications network, use only a modem complying with local
regulations.

CCITI

Recommendations

V.24

and

V.28.

For

Germany (Acoustics)

Laermangabe (Schalldruckpegel
nach

DIN

45635,

Acoustic Noise (A-weighted Sound Pressure Level
normal operation to

Teil

19:

ISO

LpA

7779:

LpA)

<

70

LpA

gemessen am fiktiver Arbeitsplatz bei normalem Betrieb

dB

LpA)

measured at the bystander position,

<

70

dB

4

Safety Considerations

GENERAL - This product and related documentation must be reviewed for familiarization with
safety markings and instructions before operation.

SAFETY SYMBOLS

Instruction manual symbol: the product will be marked with this symbol when it is
necessary for the user to refer to the instruction manual in order to protect the
product against damage.

Indicates hazardous voltages.

Indicates earth (ground) terminal (sometimes used
common connected to grounded chassis).

Caution

I

Warning

G

in

manual

Explanation

The CAUTION sign denotes a hazard.
procedure, practice, or the like, which, if not correctly performed or
hered to, could result in damage to or destruction of part or all of the
product. Do not proceed beyond a

fully

conditions are

understood and met.

Explanation

The WARNING sign denotes a hazard. It calls attention
dure, practice,
hered to, could result in injury.
sign until the indicated conditions are fully understood and met.

or

the like, which,

of

Caution

It

calls attention to an operating

CAUTION sign until the indicated

of

Warning

if

not correctly performed

Do

not proceed beyond a WARNING

to

indicate circuit

to

a proce-

or

ad-

ad-

5/6

Printing History

The Printing History
cally, update packages are distributed which contain replacement pages to

cluding an updated

Each reprinting
Thus, the reprinted
update information. New editions

To

determine what manual edition and update is compatible with your current software revision code, refer to
the Manual Numbering File or the Computer User's Documentation Index. (The Manual Numbering File is
included with your software.

First Edition

below

of

this manual will incorporate all past updates; however, no

copy

identifies the edition

copy

of

this printing history page. Also, the update

will

be

identical

It

consists of an "M" followed

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

of

this manual and any updates that are included. Periodi-

in

content to prior printings of the same edition with its user-inserted

of

this manual will contain new information, as well as all updates.

by

a five digit product number.)

Feb 1992

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

be

merged into the manual, in-

may

contain write-in instructions.

new

information will

be

.

added.

7/8

Preface

The

HP

1000

A990

20-S10t System/Computer Installation and Service Manual, part number

02959-90002,
A990 Computer and the
service engineers.

Chapter 1 - Introduction

Includes environmental and electrical specifications plus site preparation, unpacking, and loss or
damage claims procedure information.

Chapter 2 - Installation

Gives configuration information and describes the procedures for installing the A990 computer.

Chapter 3 - Service

Describes maintenance and troubleshooting requirements and procedures, power supply checks,
power-on self-tests, and definitions of LED indicators. Also describes procedures for removing

and replacing assemblies and reconfiguring the power supply.

describes the procedures for configuring, installing, and servicing, the

HP

2999A A990 System. This manual is written for systems and field

HP

2959A

Chapter 4 - Replaceable Parts

Lists and illustrates replaceable parts for the A990 computer.

9/10

Chapter 1
Introduction

Table of Contents

Site Preparation

Environmental Considerations
Power

Cooling Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unpacking and Inspecting
Claims Procedure
Physical Inventory

.....

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

Requirements.

....

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

...

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

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

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

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

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

Chapter 2
Installation

Required Tools
Configuration Requirements

Verifying the Power Supply Configuration
Battery
A990

Startup Option Switches

Autorestart Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Interface

Virtual Control Panel (VCP) Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Memory Configuration
I/O

Priority Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation Procedure

Battery Backup Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Memory Installation
I/O

Card
Self-Test Check . .
Computer

Table Mounting

Rack Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

System Console (Terminal) Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Interface Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disk Drive Installation
Powering
Verifying Computer Operations
Primary System Backup

Repackaging for

Shipment Using Original Packaging

Shipment Using New Packaging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

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

Backup. . ..

CPU

Card

Card

Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting.

Up

Shipment.

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

Switches

Switches

..

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

..

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

the System and

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

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

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

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

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

. .

..

. . . . .

..

. . . . . . . .

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

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

Booting.

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

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

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

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

.. ..

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

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

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

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

1-1
1-1
1-1
1-2
1-2
1-6
1-6
1-6

2-1
2-1
2-1
2-2
2-4
2-5
2-5
2-7
2­2-7

2-9
2-10
2-10
2-13
2-13
2-13
2-14
2-14
2-14
2-15
2-16
2-17
2-17
2-18
2-18
2-20
2-20
2-20

7

11

Chapter 3

Service

Electrical Safety
Periodic Maintenance
Troubleshooting

Power Supply
A990 Self-Test

Test 1

Test 2
Diagnostics
Memory Card LEDs

Assembly Removal and Replacement

Fan Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fans

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

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacement. .

Power Supply

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Battery Pack

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Plug-in Cards

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EPROM

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacement. . . . . . . . . . . . . . . .

Backplane.

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Line Filter

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

115/230

Power Distribution Diagram

Vac

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

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

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

Check....

Programs.

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

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

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

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

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

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

and Time-of-Day Clock

. . . . . .

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

Reconfiguration

..

..

... . .. . ...

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

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

..

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

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

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

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

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

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

Chips.......................................

..

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

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

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

...

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

. .

. . .

..

. . . . . .

3-1
3-1
3-2

. 3-2

3-4
3-4
3-5
3-9
3-9

3-9
3-10
3-10
3-10
3-10
3-10
3-10

3-11
3-11
3-11
3-12
3-12
3-12
3-12
3-12
3-13
3-13
3-13
3-13
3-14
3-14
3-15
3-15
3-15
3-15
3-16
3-16

Chapter 4
Replaceable Parts

Replaceable Parts Table
Ordering Information

Parts Exchange Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

4-1

4-1

4-1

12

List of Illustrations

Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure 3-1.
Figure
Figure
Figure
Figure
Figure

Table
Table
Table
Table

Table
Table 3-2.
Table
Table 3-4.
Table

1-1.

1-2.
2-1.
2-2.
2-3.
2-4.
2-5.
2-6.
2-7.
2-8.
2-9.
2-10.
2-11.
2-12.

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

4-2.
4-3.

1-1.
2-1.

2-2.
2-3.
3-1.

3-3.
4-1.

AC

Power Cord Sets (USA)

AC

Power Cord Sets (Non-USA)

of

Front View
Power Supply Connector Diagram
Computer Back

A990

CPU

Switch

A990 Memory Configurations

HP
Backup Battery and Battery Bracket
Backup Battery Installed in Battery Bracket
Battery Assembly in Initial Position
Battery Assembly in Final Position
System Cabling Diagram
Sample Display
A990
Power Distribution Diagram
2O-Slot
2O-Slot
Front

SW2 in Default Configuration

2959/2999

CPU

:Box
Box Exploded View (Rear)

Panel Assembly

Chassis with Bezel and Fan Panel Removed

Panel and Power Panel

Card

Switches SW1 and SW2

Cards and

of

Self-Test Test 2

Card

Chip Location Diagram

Exploded View (Front)

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

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

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

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

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

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

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

I/O

Priority Assignments

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

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

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

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

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

Error

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

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

Code

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

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

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

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

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

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

Tables

Electrical and Environmental Specifications. . . . . . . . . . . . . . . . . . . . . . . . . .

SW2 Start-Up Switch Settings
Memory Array Cards and Frontplanes
A-Series
Power Supply Test Voltages
LED
Self-Test
LED
List

1/0

Interface

Indicators and

Pass Indications

Indicators and

of

Replaceable

Card
Error
Error

Parts.

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

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

ID

Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . .

........................................•

Codes for Test 1 and Phase 1

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

Codes for Test 2 . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

of

Test 2

......

1-5

.

1-5

.

2-2

.

2-3

.

2-3

.

2-4

.

2-5

.

2-8

.

2-9

.

2-11

.

2-11

.

2-12

.

2-12

.

2-16

.

3-7

.

3-14

.

3-17

.

4-5

.

4-7

.

4-9

.

1-2
2-6
2-8

2-19

"

3-3
3-6
3-7
3-8

13

1

Introduction

This chapter describes environmental specifications, site preparation procedures, and procedures

HP

1000

for unpacking and inspecting the supplied materials for the

HP

1000

and the
A990 CPU Card in a
2999A System Processor Unit (SPU) consists of an A990 CPU card in a
power supply,
appropriate manuals, and on-site installation assistance and checkout by a Hewlett-Packard
Service Engineer.

A990 System (HP 2999A). The

20-s10t

HP-IB or SCSI Interface, RTE-A Primary System software, diagnostic software,

card cage with power supply, and appropriate manuals. The

HP

2959A Computer product consists

A990 Computer (HP 2959A)

of

an

HP

20-s10t

card cage with

Site Preparation

When you prepare the site for the computer
environmental considerations, power requirements, and type

115

Vac

system operates at a nominal

or

mounted

rack mounted.

or, optionally, at

Environmental Considerations

Table

1-1

describes the environmental requirements for the A990. When you set up your
computer or system, be sure you take into account environmental requirements or limitations
imposed by all peripheral devices and components in the same location.

Power Requirements

The

HP

2959A and

power source of
Maximum power consumption

information on changing the power supply line configuration from
For the protection

ground the instrument chassis, panels, and housing.
providing a grounded three-wire female power outlet at the computer location. This outlet should
be checked by a qualified electrician to ensure that it furnishes the required voltage and current.

HP

2999A are shipped with the power supply configured for a single-phase

86

Vac

to

138

Vac

(standard) or

of

the

HP

of

your operating and service people, various safety codes require you to

or

system, be sure you include provisions for

of

mounting. The computer or

230

Vac.

The system may be table

178

Vac

to

276

Vac

2959/99A

(option

is

750

watts

(1400

VA).

115

You

can satisfy this requirement by

015).

Refer to Chapter 3 for

Vac

to

230

Vac

operation.

Introduction

1-1

The computer or system also must be properly protected by fuses or circuit breakers of sufficient
capacity to carry the current load specified for the computer or system. Refer to Figures
1-2

for descriptions of the various types of ac power cord configurations.

1-1

and

Cooling Requirements

No external cooling

airflow as long as the computer or system

1-1

in Table

and the front and rear grills are not obstructed.

Four fans provide approximately
Half of the airflow is used to cool the power supply, and half the airflow

is

required for the computer or system. The internal fans provide enough

is

operated within the temperature limitations specified

10.1

cubic meters per minute

(360

CFM) front-to-rear airflow.

is

card cage.

Mounting Considerations

You

can use the computer either free-standing on a table, or mounted in a standard

If

(19-inch) equipment rack.
mounted equipment rack. Refer to Table
mounting the

A990 on a table, provide enough clear space at the front and back of the computer

to permit an unimpeded intake and exhaust of airflow.

Table 1-1. Electrical and Environmental Specifications

ELECTRICAL SPECIFICATIONS

AC Power Requirements

used in a mobile environment, install the computer in a shock-

1-1

for physical dimensions of the computer. When

directed through the

483

mm

Line

Line

Inrush

Maximum

Power Supply

Output

and

tolerances:

Available Backplane

1-2 Introduction

voltage:

frequency:

Current

Power

DC

voltages

86

to

172

47.5

(cold power-up): 20.0

40.0

Required:

750

+5.1

+ 12.0 V

-12.0

Power:

380

power may be used if

voltages between 104-138

(option 015).

138

to

276

to

66

Amps
Amps

Watts

V

V

Watts,

Vac

(115

Vac

(230

Hz

maximum
maximum

(1400

VA)

±2%

+6/-3%

±6%

maximum.

Vac

Vac

(at
(at

An
the

-25%/

+ 20%) standard;

-23

%/

+ 20%) option 015.

115

Vac)

230

Vac)

additional

input voltage

Vac

60

(standard)

Watts

range

or

of backplane

is limited

178-276

to

Vac

Table

1-1. Electrical and Environmental Specifications (continued)

Power

Supply (continued)

Maximum output and
current rating to
memory cards:

Short circuit protection:

Optional
it must be charged from

DC

25 kHz AC VOLTAGE

Voltage:

I/O and

Power (If

+5.1 V

65.8 A

Note that combined current available from the

+5

V(M) power supplies is 70 A maximum

All

dc

power outputs are fault protected for short circuits
The power supply will shut down if any output is short
circuited when it receives power.

an

external battery is used,

an

external source):

EXT

BAT

+

-

EXT

BAT

19.5 V rms ±
(phase to common).

+5.0

V(M)

8.5A

Input: 15.0 V maximum

10.5 V minimum

Input: Ground

8%

(at

0.02 to 1.5

+ 12.0 V

5.4 A

12.6 V nominal

A),

-12.0 V

split phase

3.4 A

5.1

V and

Current:
Power:

BATTERY BACKUP

HP

12157B Battery Backup:

Battery type:

1.5 A maximum
50Wmaximum

Battery backup provides from 15 to 90 minutes
memory sustaining power for up to four memory array
cards, depending upon system configuration, state
charge, and temperature. Additional hold-up time can be
achieved

Sealed lead-acid.

by

connecting

an

external battery.

of

of

Introduction 1-3

Table 1-1. Electrical and Environmental Specifications (continued)

PHYSICAL CHARACTERISTICS

Dimensions

Height:
Width:
Depth:

266 mm (10.5
483

mm

(19

610 mm

(24

in)

in)

in)
Weight:
Venti lation:

ENVIRONMENTAL SPECIFICATIONS

Temperature

Operating:

Non-operating:

with optional battery backup:

Relative humidity

Operating:

Non-operating:

Altitude

Operating:

29.5 kg

Four fans provide approximately
per minute
the card cage and half to cool the power supply.

0° to 55° C (32° to

Maximum temperature is linearly derated 2° C (3.6°

for each 304.8 m (1000
The resulting temperature range is

(32° to

-40°

-40°

(65

Ib)

10.1

cubic meters

(360 cfm) front-to-rear airflow, half through

131

°

F)

up to 3048 meters (10,000

ft)

increase in altitude.

0° to 45° C

113

°

F)

at 4572 meters (15,000

to 75° C (-40° to 167°
to 60° C (-40° to 140°

F);
F)

ft).

F)

5% to 95% with maximum wet bulb temperature not to

exceed
may cause condensation.

40° C (140°

F),

excluding all conditions which

5% to 95% in non-condensing conditions.

4.6 km (15,000

to

ft)

ft);

Non-operating:

Vibration and

Shock

Operating:
Non-operating:

Vibration

Operating:

Gravity, due to acceleration:

1-4

Introduction

Shock

to 15.2 km (50,000

1.5 g peak,

Y2

ft)

sine, 6 to 9 ms duration,

45

Hz crossover

7.0 g peak, % sine, 6 to 9 ms duration, 45 Hz crossover

Frequency

(Hz)

5

5-15

15

12-200
200-350
350-500

Power spectral density

-1/.5

dB/octave

-6.0

dB/octave

~6.0

dB/octave

(g2

/Hz)

0.002

0.0015

0.00012

0.43 rms (approximate)

115/120 Vac

220/240Vac

Brown or Black

Green/Yellow

Light Blue or White (N)

Brown

Green/ Yellow

Light Blue

'"

Blad<

or

White (N) r

(E)

(E)

Male Nema (Molded) Female CEE

(l)~

crn{-§

~

MaleCEE

II.)

:(J

~

~

Female CEE

a::

(l) Brown

(E) Green/Yellow
(N) Light Blue or White

Part No.

~

(l)

Brown or Black

(E)

Green/Yellow

(N) Light

Part No.

or

Black

8120-5337 (2.2m)

Blue or White

8120-1860 (1.5m)

Note:

Other countries such as Canada, Japan
Mexico, Philippines, and Taiwan
power cord sets.

220/240Vac

Green/Yellow

220/240Vac

Ugh!

Blue

Green/Yellow

Light Brown or Red

220/240 Vac

Green/Yellow

Light Brown (l)

Note: Other countrtes

configurations. For correct
consult your nearest HP Sa es Office.

Consult your nearest HP Sales Office.

East and West Europe

Ugh!

BI,.

Brown (l)

Australia, New Zeland

0'

BlaOk

United Klndom, Cyprus, Nigeria,

Ugh!

BI,.

may

(100 or 200 volts),

may

use some of the above N

Figure 1-1. AC Power Cord Sets (USA)

IN)

~

(E)

~

IN)

=©

(E)

(l)

IN)

~

(E)

~

Singapore

•

use more than one of the above power cord

Fe0wer

cord set In your area,

E Earth or Safety Ground

l

FemaieCEE

~

FemaieCEE

~

FemaieCEE

~

--

Neutral or Identified Conductor
Line

or

Active Conductor

(l) Brown

(E)

~

(N) Light Blue

Part No. 8120-1689 (2.0m)

(l) Light Brown or Red

(E)
(N) Light Blue or Black

~

Part No. 8120-1369 (2.2m)

~

(l) Light Brown

~

(E)
(N) Light Blue

Part No. 8120-1351 (2.2m)

or

Safety Ground

Earth

E
N

l

Identified Conductor

Neutral or
Line or Active Conductor

Green/Yellow

Green/Yellow

Green/Yellow

Figure 1-2.

AC

Power Cord Sets (Non-USA)

Introduction 1-5

Unpacking and Inspecting

Your A990 computer or system may be shipped in several containers. Verify the number of
containers received against the carrier's paperwork. Inspect each container for damage that may

If

have occurred during transit.

carrier be present when you open the container.

Open the shipping container marked "MANUALS AND ACCESSORIES" and locate the
materials list. Compare it with your purchase order. Make sure it includes everything you have
ordered. Unpack the shipping container(s) and inspect each item for external damage, such as
broken controls and connectors, dented corners, bent panels, scratches, and loose components.
Also check the rigid foam-plastic packing material (if used) for signs of deformation or cracking.
Such signs may indicate rough handling in transit.

If

you find damage to the computer or accessories,
below. Be sure you keep
settling a claim, or to repackage the computer or system.

all

you find damage or water stains, request that an agent of the

follow

shipping containers and packing materials.

the damage claim procedure described

You

may need them for

Claims Procedure

If

you need to make a claim, contact your nearest Hewlett-Packard Sales and Service Office.
the loss occurred in transit, notify the carrier as
retain all shipping and packaging materials for inspection. Hewlett-Packard
or replace damaged or lost items even though claims against the carrier may not yet be settled.

well

as Hewlett-Packard, and also be sure you

will

arrange to repair

If

Physical Inventory

Make sure all manuals listed in the bill of materials are included. Your computer's model and
serial number
serial numbers should match those on the packing list.
Hewlett-Packard
computer or system, verify that the cards have been supplied as specified on your purchase order.

is

located on the identification label on the back of the chassis. The model and

If

they do not, immediately contact your

Sales and Service Office.

If

you have ordered I/O or memory cards with your

1-6 Introduction

Installation

2

This chapter describes procedures for configuring and installing the A990
and system.

Required Tools

Slot and Phillips head screwdrivers are the only tools you
system.
cards.

We

strongly recommend the use of a wrist strap and ground cord when handling plug-in

will

need to install the computer or

Configuration Requirements

Verifying the Power Supply Configuration

Warning

G

To

avoid damage
adjustments,
only by qualified maintenance people.

or

to

equipment

repair

or

injury

to

the power supply must be performed

to

people, any service,

20-s10t

box computer

The computer's ac line voltage configuration
configuration power connector. The power connector must be plugged into one of two connectors
(P7 or P8) located at the left side of the power supply when viewing the computer from the front.
See Figure
connectors P7 and P8. For
P8. For

To

check the position of the ac line configuration/fan power plug connector, remove the computer
front panel and fan panel and inspect the position of the power line connector relative to sockets
P7 and P8. The ac power cord
configuration connector

panel, refer to Chapter 3 of this manual.

230

2-1

for a

view

of the power supply from the front, and Figure

Vac

operation, the connector must be plugged into socket P7.

is

is

determined by the position

115

Vac

operation, the power connector must be plugged into socket

is

always connected to plug P9 regardless of how the line

set. For step-by-step information on removing the front panel and fan

of

the line

2-2

for the location

Installation 2-1

of

B. B.

ON

Terminal

Positive

Battery

Terminal

Figure 2-1. Front View of Chassis with Bezel and

Battery

Backup Terminal

Assembly

B. B.

OFF

Fan

Negative

Battery

Terminal

Panel Removed

Battery Backup

The

HP

12157B
system configuration, state of charge, and temperature. Additional memory hold-up time can be
achieved by connecting an external battery.

If

Battery Backup
ENABLE. The switch
position if the power is turned off and if memory backup
be set to DISABLE if cards are to be connected or disconnected from the backplane.

Refer to the
battery backup. Note that if batteries are not installed, the strapping connector from the terminal
on the lower board of the power supply must be connected to B.B.
batteries are installed, the strapping connector must be connected to B.B. ON.

Battery Backup

is

installed, set the Battery Enable switch on the back panel of the computer to

is

shown in Figure

will

sustain memory for

2-3.

15

to

90

minutes, depending on the

This switch should be set to the DISABLE

is

not required. The switch should also

Battery Backup Installation section later in this chapter for instructions on installing

OFF. (See Figure 2-1.)

If

2-2 Installation

B

P9

pSL-1
P7L-1

___
___

....J

....J

(Toward

Front

of

Power Supply

Fan

Panel and Front Panel)

P2

P1

P5

[!!l

Connector

P1
P2
P5
P6
P7
PS
P9
P14

-

Figure

Description

DC

Output Connectors

DC

Output Connectors
Battery Switch Connector
Test Points and External Battery Connector
230 Vac Line Configuration Connector
115 Vac Line Configuration Connector
AC

Line Input Connector

Battery Backup

2-2.

Power

OFF Connector

Supply

Connector

Diagram

-

Figure

2-3.

Computer

Back

Panel

and

Power

Panel

Installation

2-3

A990

CPU

Card Switches

The A990 CPU card contains two switches, SWI and
action (push and release) reset switch that resets the A990
DIP switch (see Figure

1.

BOOT

2.

Autorestart override (Memory Lost), which sets the conditions under which autorestart
occurs.

SELECT, which selects computer operations at power-up.

2-5)

that controls the following functions:

· .

· .

· .

..

· .

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

· .

0

~

2

m

Cti

C

..

· .

. .

..

. .

. .

· .

. .

..

. .

. .

. .

..

. .

. .

. .

..

. .

.

.

. .

· .

. .

. .

..

. .

.

.

. .

. .

. .

. .

. .

..

. .

. .

. .

..

. .

..

..

SW2

(s,ee

Figure

CPU card. SW2 is an eight-section

SW1

2-4).

SWI is a momentary

2-4 Installation

Firmware

EPROM

Figure 2-4. A990

A bank

board,

CPU

Card Switches

of 4 LEOs

directly below the upper bank

is located on the lower side

SW1

and SW2

of

8 LEOs.

of

the

Startup Option Switches

There are eight switches,

SW2-1

through

SW2-8,

that control the startup options. Table

specifies the available startup options and corresponding switch settings.

Autorestart Switch

Autorestart

1.

DOWN
autorestart or if battery backup is not installed. When using the
be sure you set the Battery Enable switch to DISABLE.

When
that was running prior to the powerfail condition. Instead, the boot loader (or
routine)

2.

UP (oft) - Autorestart
is
restart the program that was running prior to the powerfail condition. With no battery
backup installed, you

is

controlled by switch

(on) - Autorestart

SW2-8 is ON, if power

will

execute.

set to ENABLE.

SW2-8

is

not enabled. Use this setting if you do not wish to use

is

is

enabled if battery backup is installed and the Battery Enable switch

If

power

will

is

get a self-test error when you switch the computer on.

(see Figure

lost, the autorestart feature

2-5).

The settings for switch SW2-8 are:

ON

position for

will

not restart the program

lost and memory was sustained, autorestart

will

2-1

SW2-8,

VCP

automatically

Figure 2-5. Switch SW2 In Default Configuration

Installation 2-5

Table 2-1. SW2 Start-Up Switch Settings

Computer Action

S1

Loop on self-test Test 2 regardless of error. D D
Loop on
Run

For the
is restarted (JMP 4B).
VCP will execute. When a loader finishes an autoboot, it starts execution

self-test Test 2 and stop on error.

Virtual Control Panel

following switch settings, the computer action indicated will occur if memory is lost, otherwise, the program

VCP.

Run

Speed sense and run

Execute program from
must have

Load and execute the program via the HDLC
the

to loader command %BDS. **

Load and execute program from the first file of the disk (via HP-IB

To

autoboot via HP-IB
and, for
dress

select code 22. This is equivalent to the loader command %BRM. **

HDLC

or

LAN card, the card must have select code 24. This is equivalent

HP-IB, the disk drive must have HP-IB address 2

6.

This is equivalent to the loader command %BDC. **

(VCP)

routine on completion of self-test.

If the autorestart feature is disabled (switch SW2-8 down), the program cannot restart and

VCP.

See Notes 2 and

PROM card. In order to autoboot from PROM, the card

or

SCSI, the interface card must have select code 27;

3.

or

LAN card.

To

autoboot via U

or,

for SCSI, ad-

of

the loaded program at location 02.

or

SCSI). U U U

D D
D

U

U U

U

Swlt~h~~*

S2 S3 S4 S5 S6 S7 S8

D D
U

U U

D D D

D

D

U

D D z

U

D z
D z

U

D z

D

Y
Y
Y

Y

Y

Y

Y

Y

D M
D M
D M

M

D

D M

M

D

M

D

D M

z

z

z

z

Execute bootstring from the time-of-day clock

the A990

*
**

Notes:

CPU card.

D = Down (On); U =
Refer to the

=

D,

y

=

U,

y

=

D,

z
z =

U,

M =
M =

1.

2.

3.

HP

normal mode, system console uses ENQ-ACK handshaking.
system console does not use ENQ-ACK handshaking.
normal mode, break enabled.
break disabled (but not halts).

D,

disable autorestart (battery backup not installed).

U,

enable autorestart (battery backup installed).

Do not use any switch combination that is not specified above.
Use this switch configuration for normal computer operation.
Speed sense allows VCP to execute at any baud rate supported

Up

(Off)

1000 A990 Computer Reference Manual, part number 02959-90001.

RAM

(non-volatile

RAM)

on

D D

D

by

the 8-channel MUX.

U z

Y

D M

2-6 Installation

Interface Card Switches

Assign each I/O interface card to be installed in the computer a unique select code by setting the
select code switches on the interface cards. Refer to the appropriate interface card reference
manuals for select code switch information and for information on any other card switches that
must be set.

Virtual Control Panel (VCP) Configuration

If

you are installing a Virtual Control Panel (VCP), assign one of your

(HP

12005B),

cards as the VCP interface card.

LAN (HP

12076A),

or HDLC (HP

12007B

Modem or

MUX

HP

(HP 12040D), ASIC

12044A Direct Connect)

Set switch U1S1 on that card to

ON

(closed) to designate it as the VCP interface card.

Memory Configuration

Several memory configurations, using
can be installed in the

memory configurations. All three array sizes may be used together in the same system provided
that the largest memory card
can be installed in the
and frontplane connectors. Refer to the
instructions on installing memory.

A990.

A990 computer. Refer to Table

Refer to Figure

is

768

Kbyte, 3 Mbyte and/or 8 Mbyte memory array cards,

2-6

for an illustration of minimum and maximum

closest to the A990 CPU card.

2-2

for the available memory array cards

Memory Installation section in this chapter for

Up

to four memory array cards

Installation 2-7

Minimum A990 Memory Configuration

slot #

11

Available for I/O Card 1

12

Available for

13

Available for I/O Card
14 Available for
15

Available for
16 Available for

17 Available for

18

Available for I/O Card

19

Available for I/O Card

20 Available for I/O Card

§!Q1it

11

Available for I/O Card 1
12 Available for
13

Available for I/O Card
14 Available for
15 Available for
16

Available for I/O Card
17 Available for
18 Available for
19

Available for I/O Card 9

Available for I/O Card

20

I/O Card 2 12220A 768
I/O Card 4 Available for I/O Card

I/O Card
I/O Card
I/O Card

I/O Card
I/O Card 4

I/O Card

I/O Card 7 Available for I/O Card
I/O Card

§!Q1it

A990 CPU Card

12oo9A HP-IB Interface Card

3

Available for I/O Card

5

Available for I/O Card

6
7 Available for

Available for I/O Card

8

Available for

9

Available for I/O Card

10

Maximum A990 Memory Configuration

slot #

A990 CPU Card
12221

2
3

5
6

8

10

B 8 MB Memory Array Card

12221

B 8 MB Memory Array Card

12221

B 8 MB Memory Array Card

12221

B 8 MB Memory Array Card

12009A
Available for I/O Card

Available for
Available for I/O Card

HP-IB Interface Card

Figure 2-6. A990 Memory Configurations

KB

Memory Array Card

I/O Card

I/O Card

I/O Card

12220A 768 KByte Memory Array Card
12221A 3 MByte Memory Array Card 12221-60001
12221
Connector for 1 Memory Card
Connector for 2 Memory Cards
Connector for 3 Memory Cards 12230-60003
Connector for 4 Memory Cards

2-8 Installation

Table 2-2. Memory Array Cards and Frontplanes

Description Part Number

12220-60001

B 8 MByte Memory Array Card 12221-66001

12230-60001
12230-60002

12230-60004

I/O Priority Assignment

Each peripheral device in the system must be connected to the computer system through an
interface card installed in the card cage. A priority chain connects all interface cards in series to
prioritize simultaneous
priority of an interface card

after the last memory card having the highest priority and slot

Figure
installing interface cards in the desired order

I/O requests from a higher priority device inhibit lower priority requests by breaking the priority
chain.

peripherals. Consult the system manager to establish
cards accordingly.

2-7

for an illustration of the I/O priority assignments. Configuring I/O priority consists of

To

maximize system response time and efficiency, assign the higher priorities to high-speed

DMA

requests and interrupt requests from two or more peripherals. The

is

determined by the slot the card occupies, with the slot directly

20

having the lowest priority. See

of

priority.

I/O device priority and install the interface

Note

"

Correct computer operation requires that there be NO vacant slots
between plug-in cards.

Memory Array

Card

Memory

Frontplane

Connector

Cable to I/O Device
with Lowest Priority

Figure 2-7.

Cable

to I/O Device with

Highest Priority

(System Disk Drive)

HP

2959/2999 Cards and I/O Priority Assignments

A990 CPU

Card

Installation 2-9

Installation Procedure

Battery Backup Installation

The A990 Computer or System accommodates an optional battery backup, which you can install

To

in the power supply compartment.

1.

Make sure that the ac power cord is not connected to the computer chassis and that the ac
LINE switch is set to the
Enable switch on the back of the chassis to DISABLE.

2.

Remove the front panel, the fan panel, and the ac line configuration/fan power connector
from the chassis. Note whether the connector is attached to
Refer to Chapter 3 of this manual for instructions on removing these assemblies.

3.

If

the strapping connector
supply marked "B.B.
ON".

4.

Place the battery bracket over the battery. Align the negative (-) terminal of the battery with
the label on the battery bracket that reads

See Figure

2-1.

OFF

is

OFF", connect it to the terminal on the upper board marked "B.B.

install the battery backup:

position.

connected to the terminal on the lower board

If

you have not already done so, set the Battery

P7

(230

Vac)

"Black Wire (-)". See Figures

or

to P8

of

the power

2-8

and

(115

2-9.

Vac).

5.

On the right side of the chassis, locate a pair of wires (a white covered wire and a black
covered wire) in a gray sheath. Connect the terminal lug on the white wire to the positive
( + ) battery terminal and connect the terminal lug on the black wire to the negative (-)
battery terminal. See Figure

6.

Place the battery, bracket, and attached wires in an upright position in the battery tray
beneath the power supply.
not upward. See Figure
bracket assembly under the power supply as you set it into place. Rotate the battery and
bracket assembly so the battery terminals face upward. See Figure
screws on the battery bracket.

7.

Reinstall the fan panel and front panel. Remember to reconnect the line configuration
connector to

complete instructions.

P7 or P8, as appropriate for your line power voltage. Refer to Chapter 3 for

2-9.

Place the assembly so the battery terminals are facing outward,

2-10.

The fit

is

close, so you may have to maneuver the battery and

2-11.

Fasten the captive

2-10 Installation

Place bracket
over

battery

Figure 2-8. Backup Battery and Battery Bracket

Allach battery cable
terminal lugs onto
battery terminals.

I

I

I

White wire

l

Black wire

Figure 2-9. Backup Battery Installed

In

Battery Bracket

Installation

2-11

Battery

Assembly

Battery

Terminal

(Negative)

Figure 2-10. Battery Assembly

Positive

Battery

Terminal

Battery

Backup

Assembly

In

Initial Position

B. B.

Terminal

B.

B.

Terminal

OFF

ON

Negative

Battery

Terminal

Figure 2-11. Battery Assembly

2-12 Installation

In

Final Position

Memory Installation

Caution

I

You

can install from one to four memory array cards in the A990 card cage. With available
memory cards, you can install up to
ECC memory array cards. The memory frontplane connectors, however, are unique to the
A900 memory frontplane connectors cannot be used with the
types of memory array cards and frontplanes.

Install the first memory array card in the slot immediately to the left of the
immediately to the left of the first, and so on.
CPU card and a memory array card or between any memory array cards.
array cards of different capacities, place the largest capacity card(s) nearest the

Install the appropriate frontplane connector using one of the four supplied with your computer.
Attach the small connector of the frontplane to the
memory array card(s). Be sure you use a frontplane that matches the number of memory array
cards you have installed. For example, if you have installed four memory array cards, the
frontplane must have

STATIC SENSITIVE DEVICES ­you install or remove memory cards, you
switch to DISABLE. Also, make sure the LINE switch is set to
the ac power cord
antistatic wrist strap connected to a ground wire.

five

connectors.

is

not connected to the ac power mains. Wear an

32

Mbytes of memory. The A990 supports only the A900

To

avoid damage to equipment, before

must set the Battery Enable

A990.

Do

not leave an empty backplane slot between the

CPU card and the other connector( s) to the

Table

2-2

lists the available

CPU card, the second

If

you have memory

OFF

and

A990.

A990 CPU card.

I/O Card Installation

Install I/O cards the same way you installed the CPU and memory cards.
priorities for
CPU card, the higher the priority. Install

I/O cards are related to their placement relative to the CPU card. The closer to the

all

cards contiguously (no empty slots between cards).

DMA

and interrupt

Self-Test Check

The self-test for the processor automatically executes every time the computer is powered on.
recommended that you run the self-test to ensure that the CPU
must be made with all plug-in cards installed in the computer.
proceed as follows:

1.

Set the LINE switch to the
battery backup is installed, set the Battery Enable switch to DISABLE.

2.

Remove the rear cover for observation of the processor LEDs.

OFF

position and connect the power cord to a power outlet.

is

operating correctly. This check

To

verify the self-test operation,

It

If

is

Installation 2-13

3.

Set the power switch to ON. Observe the eight LEDs on the top of the A990 CPU card.

the computer passes the self-test, the LEDs

will

display one of the following values within
seconds. Any other LED display indicates a self-test failure. Refer to Chapter 3 for
troubleshooting information.

If

20

000001*1- VCP program
000000*0 - VCP program

VCP console to respond to the first Enq/ Ack handshake.

is

00000001
00000000
10000000

- Loader

- User software

- Loader error. Probably a checksum error; change media on loading device.

where: 1

for the

= LED lit; 0 = LED unlit; * = LED blinking

is

running; VCP console is connected.

is

running; VCP console

running.

is

running.

is

not connected, that

is,

VCP

is

waiting

Computer Mounting

Table Mounting

The computer may be used as a freestanding instrument in a land-based environment. The only
considerations are that adequate space should be allowed at the front and rear to ensure

intake and exhaust of ventilating air, and that all covers are installed. Also, a minimum of

centimeters

(15

inches) of clearance behind the computer

is

required when removing and

installing plug-in cards.

full

38

Rack Mounting

You

can mount the A990 Computer in any standard 19-inch cabinet, such as the

HP

29431G.

The usual location for the computer

is

at the bottom of the cabinet. Refer to the

HP

29429A or

manuals supplied with your cabinet for specific information on installing mounting rails, installing
the computer chassis, and grounding requirements.

When installing the

power cord to the ac power socket in the chassis and the other end to the
(PDU) mounted on the back door of the cabinet.
switch

is

set to OFF, then remove the four screws that secure the

HP 2959A CPU or the

HP

2999A SPU in a cabinet, connect one end of the ac

Power Distribution Unit

To

access the PDU, make sure the Main Power

PDU

access panel.

2-14

Installation

System Console (Terminal) Installation

Except for the cabling information given in this section and in Figure

2-12,

refer to the
documentation supplied with your terminal for all other installation information. For information
on configuring the console interface as the Virtual Control

Virtual Control Panel Configuration section

in

this chapter.

Panel (VCP) interface, refer to the

Use one of the following interfaces for your system console:

HP

12005B

HP

12040C/D Multiplexer Interface (MUX) Card

Asynchronous Serial Interface (ASIC) Card

Use the following procedure to connect your terminal to the interface card:

1.

Set the system power switch to

OFF

and, if battery backup is installed, set the Battery

Enable switch to DISABLE.

2.

Remove the computer card cage rear cover.

3.

If

you connect the terminal with an electrical cable (instead of a fiber optic cable), connect
the cable's hooded connector to the interface card, with the cable extending down. Connect
the ground lug from the hooded connector to the computer chassis.

4.

If

you connect the terminal with a fiber optic cable (to the

HP

12005B

ASIC card only),

connect the gray connector on the cable to the gray transmitter on the interface card and the

blue connector on the cable to the blue receiver on the interface card.

If

an

HP

12040

MUX

is

used as the VCP interface, the VCP terminal must be connected to

Port 0 of the MUX.
If

your terminal is connected to an ASIC card or to revision C of the

must configure the terminal for
If

you are using revision D of the

to operate at the baud rate of your

9600

HP

HP

baud rate.

12040

MUX card, the computer

terminal.

You

must have your terminal configured for the
ENQ/ACK protocol and 8 data bits with no parity or 7 data bits with
1200,2400,4800,9600, and

You

may also use one

19.2k

are supported for terminals connected to an

of

the following I/O interfaces as your VCP interface for remote VCP

HP

12040

MUX

is

automatically configured

O's

parity. Baud rates

HP

card, you

12040

MUX.

download and boot capabilities:

HP 12076A

:HP

12007B

If

you want to use the LAN card as your VCP interface, refer to the

and Installation Manual,

If

you want to use an HDLC card as your VCP interface, your remote system must be running

either

NS-ARPAl1000 or DS/1000-IV software.

refer to the NS-ARPA/lOOO Generation and Initialization Manual,
information on remote

DS/1000-WTheory

information on remote

LAN/IODO

or

HP

12044A

part number

VCP.

o/Operation

VCP.

Link Interface Card

HDLC Interface Card

92077-90034,

If

your remote system

and

Troubleshooting Manual, part number

RTE-A

for information on remote

If

your remote system is running NS-ARPAl1000,

part

is

running DS/1000-IV software, refer to the

System Generation

VCP.

number

91790-90030,

91750-90014,

for

300,

for

Installation 2-15

Interface Cabling

Refer to the manuals supplied with your interface cards and peripherals for information on
connecting devices to
procedure to install the interface cables:

1.

Set the power switch to
switch to DISABLE. Remove the rear panel.

2.

Connect the hooded connector of each cable to the edge connector of the appropriate
interface card, with the cable extending to the bottom of the card cage. Connect the cable
ground wire, if present, to the grounding strip.

3.

Connect the other end of each cable to the appropriate peripheral device. Reinstall the rear
panel.

I/O cards. After all interface cables have been assembled, use the following

OFF

and, if battery backup is installed, set the Battery Enable

Memory Frontplane

ill

I A990

C

d C

ar age

CPU

Card

V Connector

~-

v

I Memory Array

l HP-IB or SCSI

I

ASICorMUX

ill

As additional memory array cards are added, the appropriate frontplane connector must
array frontplane part numbers
respectively.

~

When installing the optional
cabling information. Note that revision
terminal.

~

Connect gray connectors to gray transmitters; connect blue connectors to blue receivers.

* Portions

or

all

of

this product line are discontinued; shown for reference only.

HP

~

_ CS/80 or SCSI

r-

Disk Drive

Jt---+----------I'------~

~

E-~------

,,/

..-------.

239x*

Terminal

......

Alternate System Console Configurations

12230-60001 through -60004 connect one through four memory array cards,

12040 MUX card, refer to the card manual, part number 12040-90123, for

0 of the MUX senses and sets the baud rate

5061-5798 (Fiber Optic) ~

--;------,

/ I I

5061-6634

I

r::::::=-1

I

~~OO_1~*

I

~~~:~~

~I~

J.

Is061J

r

l.§.8QQ

I I 262x* I

I I

Terminal

L..

____

Fi~r

OptiC
Adapter

1 ,

I

J

be

used. Memory

to

match that of the

2-16

Installation

Figure 2-12. System Cabling Diagram

Disk Drive Installation

A variety of disk drives are available for use with A990 computers and systems. Except for

installing the
for installation information. Use the following instructions to install your disk drive cabling:

HP-IB or SCSI cable, refer to the installation manual supplied with your disk drive

Note

"

1.

Set the system power switch to

2.

Connect the HP-IB or SCSI connector on the disk drive cable to the HP-IB or SCSI

connector on the back of the disk drive.

3.

Connect the hooded connector on the disk drive cable to the

Card or

cage.

4.

Install the rear panel.

Where both standard and high-speed disk drives are used in a multiple

drive installation, assign one

OFF

HP

12016A

SCSI Interface Card, with the cable extending to the bottom of the card

HP-IB Interface Card to each class of drive.

and remove the rear panel of the computer.

HP

12009A HP-IB Interface

Powering Up the System and Booting

Use the following procedure to complete the installation and power up the system:

1.

Set the terminal Power switch to ON; then set the system Power switch to ON.
backup
appear on the terminal screen after approximately
the

is

installed, set the Battery Enable switch to ENABLE. A blinking cursor

15

seconds. Press carriage return to get

VCP power-up message which displays the following:

If

battery

will

• 110 table with the select code, ID number, and revision of each installed 110 card

• Pretest errors, if present

• CPU identification

• Amount

• Contents of selected registers
Table

of

memory installed

2-3

gives the ID number for each A-Series interface card.

Installation 2-17

The following is an example YCP power-up message for a system with an
card at select code

27

and an

HP

12005B

ASIC card at select code

20

and designated as the

YCP interface:

HP

12009A HP-IB

Installed

ID Rev
004
000

(Pretest

HP

1000

A-Series

A990

CPU

P

00000

A

000002

VCP>

Note that the A-Register contains the number
contains the revision
the

A990 firmware EPROM.

2.

Boot up the RTE-A Primary System using the instructions given in the

System Software Installation Manual,

I/O

Cards

SC
0 27
1 20

Error

M

Message)

8192KB

00000
B

004022

of

<-

VCP

(this message appears only if an error was detected;

3,

Y

000000

cards found by YCP; the B-Register

?

for

MEMORY

T

Help

000000

X

refer to Chapter

RW

000000

000003

of

I/O

the YCP code; and the X-Register contains the revision number of

part number

92077-90038.

Verifying Computer Operations

A990

Self-Test Programs)

E 0 o 0

RTE-A

Primary

You

can use the diagnostic programs supplied with the

5270

or later) to verify the installation and operation of your A990 CPU. Complete

HP

24612A Diagnostic Package (Revision

documentation is supplied with the package.

Primary System Backup

Use the appropriate backup utility to back up the Primary System. Refer to the

Manual,

part number

92077-90004.

RTE-A

Utilities

2-18 Installation

Table 2-3. A-Series I/O Interface Card

10

Number Rev. Number Interface Card

10

Numbers

000 0
000
001
002
002
003
003 0

004 0

005
006
022
023
025
040

** **
044
060
061

102
102

102

102
102
102
102
106
115
126
141
143
177 7

HP 12005A*

1
0
0
0
0

0
0
0
0
0
0

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

HP

12005B

HP

12oo6A Parallel Interface Card

HP

12043A Multi-Use Programmable Serial Interface

HP

12092A Data Link Master Interface Card
HP12008A PROM I/O Card
HP

12155A A700 PROM Control Store Card
HP12009A HP-IB Interface Card
HP

12010A Breadboard Card
HP

12041B Multi-Use 8-Channel MUX Interface Card
HP

37222A Integral MODEM Interface Card

HP

12022A
HP

12065A
HP

12060A*/B
HP

12061A
HP

12062A
HP

12153A A700 Writable Control Store Card
HP

12205A A900 Writable Control Store Card
HP

12007B HDLC (Modem) Card

HP

12044A HDLC (Direct Connect) Card

HP

12042A
HP

12042B Programmable

HP

12073A
HP

12075A
HP

12082A DS/1000-IV Direct Connect Interface to
HP

12040B* /C/D 8-Channel Multiplexer Interface Card

HP

12016A
HP 12076A

HP

12063A

HP

12072A

HP

12100A

Asynchronous
Asynchronous

Integrated Disk Interface Card

Color Video Interface Card

High

Level Analog Input Card

Analog Multiplexer Expansion Card

Digital-to-Analog Card

Programmable Serial Interface
DS/1000-IV Modem Interface to

LAP-B Network

SCSI Interface Card
LAN

Interface Card
161N/160UT Isolated Digital Card
Data Link
A400 Processor Card On-Board

Interface Card
Interface Card

S~rial

Interface (Direct Connect) Card

Interface Card

Slave Interface Card

(Modem) Card

HP

3000

HP

3000

I/O (not an I/O card)

Discontinued product; shown for reference

*
**

Has no I/O master or

ID

number.

only.

Installation 2-19

Repackaging for Shipment

If

you need to return any part or all of your computer or system to the factory, you can use the
same shipping materials originally used
from Hewlett-Packard

available materials.

Sales and Service Offices. Alternatively, you can use commercially

Shipment Using Original Packaging

When returning an item in its original or factory supplied packaging, use the following procedure:

1.

Attach a tag to the item clearly describing the type of service needed or
returning the item; include the item's model number and serial number on the tag.

2.

Mark the container "Fragile" to assure special handling (although this
proper packaging).

3.

In correspondence dealing with an item, please refer to it by both model and serial numbers.

Shipment Using New Packaging

by

the factory or you can obtain new shipping packages

why

you are

is

no substitute for

The following instructions should be used
commercially available materials:

1.

Wrap the computer in Aircap film or foam.
Hewlett-Packard, first attach a tag to the computer with your return address and indicate the
type of service required. Include the computer model number and full serial number.

2.

Use a strong shipping container large enough to hold the item and enough shock absorbing
material to cushion the item and prevent movement inside the container. A double-wall
carton made of

3.

Seal the shipping container securely and mark it "Fragile".

4.

In any correspondence dealing with the computer, be sure you refer to it by its model
number and serial number.

2.41

MPa (350-psi) test material

as

a guide when packaging the computer with

If

shipping the computer back to

is

adequate.

2-20

Installation

3

Service

This chapter describes periodic maintenance procedures, troubleshooting information for

level,

isolating malfunctions to the assembly
computer assemblies.

Electrical Safety

Before proceeding with any maintenance or service on the computer which requires physical
contact with electrical or electronic

safety precautions are followed to protect against shock. Heed all

equipment and in this manual. All service work must be done by qualified personnel.

components, be sure that either power

and procedures for removing and replacing various

is

removed or that

"WARNING" signs on

Periodic Maintenance

Warning

G

Maintenance schedules should be set up according to the quality of the environment in which the
computer
periodic maintenance than one that
or other particulate matter. Consult the service manuals for any peripherals for the procedures
required for a preventive maintenance schedule.

Perform the following steps as often as necessary:

1.

2.

3.

is

Clean the cabinet exterior and interior.
Check the ventilating fans for proper operation. The fans have sealed bearings and need no

lubrication.
Clean the computer air filter by washing it in a solution of warm water and mild soap. Dry

the filter thoroughly before you re-install it.

High voltages are present
nect power before performing any maintenance. Failure to do this

in

could result

operating. A computer in a clean and air-conditioned atmosphere requires less

serious injury.

is

located in an atmosphere laden with dust, smoke, moisture,

in

the system equipment. Always discon-

Service

3-1

Caution

I

To

ensure that the computer remains free of dust, you must clean the air
filter periodically. Inspect it as often as your computer environment dic­tates, and clean it as soon as the first signs of dirt appear. Failure to keep
the filter clean can result in permanent damage to the computer.

Troubleshooting

System malfunctions can be isolated to the assembly

1.

Power supply check.

2.

Self-tests.

3.

Diagnostics.

When a test procedure indicates a faulty component, you can usually correct the problem by
replacing the assembly in which the indicated faulty component
problem, contact your nearest Hewlett-Packard
obtaining a new assembly and returning the faulty one. Assembly removal and replacement
procedures are given in this chapter.

level

by performing the following tests:

is

located.

Sales and Service Office for instructions regarding

Mter

identifying the

Power Supply Check

Warning

G

To

avoid damage to equipment or injury
adjustments, or repair to the power supply must be performed
only by qualified maintenance people.

to

people, any service,

Before working on the power supply, you must set the computer's ac Power Switch (LINE switch)
to

OFF

and disconnect the ac power cord. Before working on the system, turn off the power at
the system Main Switch, on the rear door of the cabinet, and disconnect the ac power cord.
computer

To

verify power supply operation, use a voltmeter to verify that the signal values at the rear panel
test connector (near the Battery Enable switch) are the same as those listed in Table
MLT - signal
not installed.

3-2 Service

or

system

is

is

equipped with battery backup, set the Battery Enable switch to DISABLE.

generated

by

battery backup and may not be within tolerance if battery backup

3-1.

The

If

the

is

Table 3-1.

Power

Supply

Test Voltages

Test Conn.

Pin No.

1
2
3

4

5

6
7

8,9

12

If

any of the voltages are out of tolerance, perform the following steps to identify the malfunction:

1.

Set the ac Power Switch (LINE switch) to OFF, the Battery Enable switch to DISABLE (if

-12

PFW

Common

battery backup

Test Point

+5
+12

+5M

paN

+ (Power ON)

- (Power Fail Warning)

MLT

- (Memory Lost)

<t>1,

<t>2

is

installed), and disconnect the ac power cord. Wait

+5.1 V

+ 12.0 V + 0.72

-12.0 V
+5.1 V
+3.7V
+3.7V
+3.7V

0.4 V ± 0.4 V if battery backup is not installed

19.5 Vrms + 1.95,

19.5 Vrms

Nominal Voltage

±0.10

±0.72
±2%
±1.3
±1.3
± 1.3 V if battery backup is installed

± 1.6 Vrms (at .02 to 1.5 Amps)

V

V,

-0.36 V

V

V
V

-2.3

Vrms (at 0 to .02 Amps)

90

seconds before

proceeding to the following steps.

2.

Remove

the,

front panel and fan panel to uncover the power supply. Refer to the removal

and replacement sections later in this chapter for instructions.

3.

Verify that the ac line configuration/fan power plug
the power supply. Refer to Figure

a.

For

115

Vac

power sources, plug the configuration/fan power plug into connector P8.

b.

For

230

Vac

power sources, plug the configuration/fan power plug into connector P7.

4.

Reconnect the ac power cord and set the LINE switch on the rear panel to ON.
backup

5.

Using a voltmeter, verify that the signal values at the rear panel test connector are the same
as those listed in Table

a.

is

installed, set the Battery switch on the power panel to ENABLE.

3-1.

If

a charged battery pack

within tolerance, turn the power supply

2-2.

is

installed and the MLOST- (memory lost) signal is not

OFF

is

plugged into the correct connector on

for

90

seconds, then

ON

again.

recurs, replace the power supply.

b.

If

a charged battery pack
memory array cards for
pack must have been charged for

will

not sustain one memory array card for

15

minutes, replace the power supply. Note that the battery

24

hours in order to sustain memory for the specified

60

minutes, or four

amounts of time.

c.

If

the

25

for

kHz sine wave

90

seconds, then back ON.

<t>

1 and

<t>2

signals are not within tolerance, turn the power

If

the fault recurs, replace the power supply.

If

battery

If

the fault

OFF

Service 3-3

d.

If

any

seconds, then

of

the remaining signals are not within tolerance,

ON

again.

If

the fault recurs, replace the power supply.

turn

the power

OFF

for

90

Caution

,

6.

If

the voltage checks in step 5 do not detect an out-of-tolerance voltage, remove all
plug-in cards in the
(these ranges
power supply):

a.

If

the voltages are within tolerance, one

cards one-by-one while making voltage checks to detect the defective card.
If

b.

A990

any voltage is

First, replace the power supply.

Self-Test

Set the Power switch to
before removing

card

are

slightly wider than those listed in Table 3-1 because there is no load on the

out

or

cage. Repeat the voltage checks using the following voltage ranges

Voltage Point

+12V

-12V

+5.1V

+5.1VM

PON+

of

tolerance, this could mean a faulty power supply

OFF

and

the Battery Enable switch

inserting a plug-in card.

Voltage Range

11V - 14V

-llV --14V

4.75V - 5.5V

4.75V - 5.5V

2.4V - 5.2V
of

the plug-in cards is defective. Install the

If

the problem persists, replace the backplane.

to

DISABLE

or

backplane.

Programs

of

the

The A990 self-test consists

turn

each time you

on

SW1
Test 2
hardware associated with the
executes the

Successful completion
Control
(Refer
bootstrap loaders
switches

Test 1

Test 1 is stored as a microprogram in the firmware
immediately on power-up
of
card

the A990

(VCP pretest) tests the processor

LIA

Panel (VCP) program,

to

the

A990

are

configured. Refer to

Test

1,

Test 2 is started.

display an

on

CPU

instruction

Computer Reference Manual,

and

error

of

two test programs (Test 1

the computer.

card. Test 1 (microcoded self-test) tests the processor

LIA

and

of

the tests is followed by execution

the VCP.) Which

and

checks all

If

Test 1 detects a failure, it stops executing

code.

You

also can initiate these tests by pressing Reset Switch

at

the functional level.

instruction to ensure

checks the results

or

a program sustained in memory by optional battery backup.

part

of

these occurs depends on how the

A990

CPU Card Switches in

of

the hardware

and

Test

2)

that

automatically execute

at

the circuit level.

For

example, Test 1 tests the

that

the hardware works correctly. Test 2

to

ensure

number 02959-90001, for information on

EPROM

that

the instruction works correctly.

of

either a bootstrap loader, the Virtual

on

on

the card.

Chapter

the A990

BOOT

2.

CPU

On

successful completion

and

the

card.

LEDs

SELECT

It

executes

on the

CPU

3-4 Service

The bank

of

four LEDs on the bottom

of

the

CPU

card displays a code that indicates which field

replaceable unit failed. When Test 1 is finished, all four LEDs are extinguished. The bank

eight LEDs on the top

replaceable units. Any pattern that is displayed on the bank

of

the

CPU

card is not used by Test 1 to indicate defective field

of

eight LEDs during Test 1 should

be ignored. Table 3-2 lists the LED indications for Test 1 and their associated error codes.

Test 2

of

Test 2 is

It

begins execution upon successful completion

operator command (%T) from

seconds to run, depending on the amount

The first phase
Boot RAM. When the entire Boot RAM has been successfully tested, each location

part

of

the VCP program also stored in the firmware

of

Test

1.

VCP.

of

Test 2 checks the computer's basic instruction set, several internal flags, and the

Test 2 executes in two phases, and may take as long as

of

memory installed.

EPROM

on the A990

CPU

Test 2 can also be initiated by an

of

Boot RAM

card.

contains zeros.

The second phase of Test 2 tests main memory, the

computer configuration. The

110 Master of each interface card is checked to ensure that data

110 Master

of

each interface card, and the

transfer, flag, interrupt, and Direct Memory Access (DMA) functions are correctly processed.

If

battery backup sustained main memory, phase two of Test 2 tests main memory in a non-

If

destructive manner.

test is performed and main memory is effectively cleared (memory contains all zeros).
successful completion
on the startup configuration as selected by the
Table

3-3

for the LED displays that indicate self-test passed.

If

Test 2 detects a failure, the error code

all oft).
indicate the type

detected during

properly and a

If

a failure is detected during phase one

of

phase two of Test

VCP console is installed. The failure causes the LEDs to flash the error code (in

binary format) as
xxx.xxx.xxx.xxx"

on the VCP console.

main memory is not sustained by battery backup, a destructive memory

of

Test

2,

the LEDs

failure by displaying a I-byte static error code (see Table

2,

well

as display the error code in octal format in the message "Pretest

will

be lit with a specific pattern. This pattern depends

BOOT

is

displayed on the upper 8 LEDs (the lower 4 LEDs are

SELECT switches (SW2). Refer to

of

Test

2,

test execution stops and the LEDs

3-2).

If

the VCP can still run if the VCP interface is functioning

On

a failure is

Error

20

Each error message for

phase two

is displayed on the LEDs using the scheme described in Figure

code is the main error code (memory error,

byte is the subcode.
example, error code

Some

300

203
error was caused by duplicate select codes
An error code

memory

(000

of

340201

000).

000 000

Table 3-4 shows the LED failure indications for Test

of

Test 2 consists

of

the error codes

000

022

indicates that an 110 error

indicates a memory error

of

four bytes

110 interface error,

give

additional information in bytes 3 and

of

information. The information

3-1.

The first byte

or

interrupt error) and the second

(300)

(203)

and the duplicate select code was

(340

201)

in the first 32k block

of

the error

4.

For

has occurred and that the

22

(000

022).
of

2.

Service 3-5

Error

Bank

4 LEOs

1111

0001

0010

0011
0100
0101
0110
0111

1000
1001
1010
1011

1100

1101
1110
1111

Table 3-2.

Code

of

11111111

XXXXXXXX
XXXXXXXX

XXXXXXXX
XXXXXXXX
XXXXXXXX
XXXXXXXX
XXXXXXXX
XXXXXXXX
XXXXXXXX
XXXXXXXX
XXXXXXXX
XXXXXXXX
XXXXXXXX

XXXXXXXX

OOOOXXXX

*

Bank

8 LEOs

LED

Indicators and Error Codes

of

Initial power-on condition. All LEOs are turned on when PON signal is low. Incorrect
indication may be caused by microcode load or execution problem, an A990 board

failure, EPROM failure,

Failure caused

Base set fatal error (also known as machine check error) has occurred after VCP was
started.

Failure caused by bad jumper board.
Failure caused
Failure caused
Failure caused by bad time-of-day clock
Failure caused by bad
Failure caused by bad
Failure caused by bad
Failure caused by bad
Failure caused
Failure caused by bad
Failure caused
Failure caused by bad
Failure caused

processor

by

See LED indications below for fatal base set error codes.

by
by

by

by

by

ASIC Chip).

or

power system failure.

bad EPROM

bad memory frontplane connector.
bad memory array card.

A990 board (possibly caused
A990 board (possibly caused by a bad cache ASIC Chip).
A990 board.
A990 board.

bad A990 board.

A990 board.

bad A990 board.

A990 board.

bad EPROM or A990 board (board failure possibly caused

for

Test 1 and Phase 1

Meaning

or

bad A990 board.

chip

or

bad A990 board.

by

a bad processor ASIC Chip).

of

Test 2

by

a bad

The following LED indications are caused by fatal base set errors after the VCP program has started:

0010 00000001

00000010

00000100
00001000
00010000

The following are Test 2 Phase 1 LED indications:

0000

11111110
11111100

11111000
11110000

Control

Microcode stack overflow or underflow. May have been caused by an error in the base
set microcode.

Zap counter interrupt. May have been caused
Two consecutive micro-interrupts. May have been caused
A micro-interrupt occurred, but the micro-interrupt register

error pattern. May have been caused by bad hardware.

Microcoded self-test
Basic instruction test failed. Bad

Boot memory access failed. Bad EPROM
TBG test failed. Bad

store parity error. May have been caused

(Test

1)

passed but first memory fetch failed. Bad A990 board.

A990 board.

A990 board.

or

by

bad hardware.

by

an error in the base set microcode.

by

bad hardware.

did

not contain a known

A990 board.

* 1 = lit LED; 0 = unlit LED; X = don't care

3-6 Service

Note

"

If

a self-test error occurs, do not boot the operating system. The integrity

of the system cannot be assured.

Use the diagnostics to find and eliminate

the cause of the error if you cannot identify a problem with the self-test.

If

the computer fails the self-test only when it is cabled to an A-Series I/O
extender, make sure the extender
is

cabled to an

HP

12025NB I/O Extender, turning off the power to the

is

powered on. Also, when the computer

extender causes a powerfail shutdown of the computer that may appear to
be a computer failure.

Revision
Preceding each byte of information a "travelling" LED pattem is displayed to indicate which byte
going
See Table

4022

and later

to

be displayed. For example, the following LED sequence is displayed for the error code 302

3-4

for a definition

Octal Code

302

201

023

021

of

VCP uses the following scheme to display the four-byte long error code on the 8 LEOs.

of

all the error codes.

LED

Display

0000000.

••

000000
.000000.

00000

000.00

0000

000.000.

Figure 3-1. Sample Display

40-

0000.0

40-

40-

•••

40-

••••

••

••

One travelling LED is displayed, then
First byte

Two

Second byte

Three travelling LEOs are displayed, then
Third byte

Four travelling LEOs are displayed, then
Fourth byte

of

error message is displayed

travelling LEOs are displayed, then

of

error message is displayed

of

error message is displayed

of

error message is displayed

of

Self-Test Test 2 Error Code

of

information is

201

023

021.

LED

Octal Code

007±:+005
002±:;000

001
000
200
020

Display Definition

000001.1

000000.0
00000001

OOOOOOOO

10000000

00010000

1 = lit LED; 0 = unlit LED; • = flashing LED

Table 3-3. Self-Test Pass Indications

VCP program is running; VCP console connected and waiting for user input.
VCP program is running; VCP console is not connected, that is, VCP is waiting for

the

VCP console to respond
A boot loader is running.
User software is running.
Loader error. Probably a checksum error; change media on loading device.
Running Diagnostic Design Language (DOL) Program.

to

the first ENQ-ACK handshake.

Service 3-7

1

360

Octal

8YD.

2

360

Table 3-4.

Code

* Definition

4

3

xxx xxx

TBG

test failed. Third and fourth bytes (xxx xxx) indicate the address in the VCP

the error was detected.

LED

Indicators and Error Codes

for

Test 2

code

where

---

340

340

200 000

340 2nn xxx xxx

341

000

200

300

300

201
202

300

203

300

204

300

205

300
300 206 000 000

207

300
300 210 000 000 Unexpected UIT interrupt.

211

300

---

---

000

377 377

000 000

Oxx

Oyy

Oxx

Oyy

Oxx

000

Oxx

000
000 000

000 000

000 000

When the LEOs are in this static pattern the memory test is running and has not yet
completed; this is not an error condition.

No

memory found

Main memory failed.

detected. Third
ECC memory detected in A400/A600; ECC memory is not supported in an A400/A600.

(This error should never

No

I/O cards
More than one card has VCP enabled;
Broken I/O chain; yy is the

priority scan; the break will usually
Duplicate select codes; more than one card has the select
An I/O card at select
No

I/O card has been enabled as the VCP interface.
Unexpected
Unexpected Memory Protect interrupt.

10

Invalid
an

number

A990.)

or

missing frontplane connector.

nn = 01b

and

fourth bytes (xxx xxx) indicate the 32-KByte

in

the card cage.

code

TBG

interrupt.

or

select

to 12b

occur

on

an A990.)

number

xx has a select

code

of

be

for A400 On-board I/O. (This error should never

depending

yy

and xx are the select

I/O cards found

found at slot xx +

code

on

where in the VCP

of less than 20b.

block

codes

by

polling; xx is the

1.
code

xx.

code

the error was

of

failed memory.

of

the enabled cards.

number

found

occur

by

on

213

300
300 220

300

*

000 000
xxx xxx

277 xxx xxx

The error
scheme illustrated in Figure 3-1.

codes

for phase 2

3-8 Service

VCP Speed Sense

} An I/O

card

where the error was detected.

of

Test 2 are displayed on the

failed.

at select

code

20 through

upper

77

failed self-test.

8 LEOs as 4 bytes

xxx xxx is the address in VCP

of

information using the

Diagnostics

You

can use the diagnostics in the
testing the computer when you cannot identify a problem with the self-test.
instructions for running the diagnostics in the manuals included with the diagnostics package.

HP

24612A Diagnostics Package (Revision 5270

You

or

later) for

will find

Memory Card LEOs

Memory array cards are equipped with a green
a multiple-bit error has occurred on that card since the time you switched the computer on.
Single-bit errors are automatically corrected. Multiple-bit errors cause the computer to execute a
jump to memory location

05.

LED

indicator.

If

the

LED

is off, it indicates that

Assembly Removal and Replacement

Warning

G

Hazardous voltages are present inside the system mainframe. Heed

all WARNING - HAZARDOUS
To

avoid damage

adjustments,

by qualified maintenance people.

or

to

equipment

repair

to

VOLTAGE

or

the power supply must be performed only

injury

labels.

to

people, any service,

Caution

I

The following paragraphs describe procedures for removing and replacing the various computer
assemblies. Refer to Chapter 4 for exploded views
mounted, read the entire assembly removal procedure.
the computer mounted in the rack, do the following:

1.

Set the power switch (LINE) to
installed, set the Battery Enable switch to DISABLE.

2.

Disconnect all 110 cables from the computer interface cards.

3.

Remove the computer from the rack. Refer to the manuals supplied with the rack for

mounting and dismounting information.

The contents
tery backup (if installed)
be

sure to save and store the contents

of

memory will be lost when ac line voltage is

is

disabled. Before shutting down the computer,

of

memory.

of

the computer.

If

you cannot carry out a procedure with

OFF

and disconnect the power cord.

If

OFF

and bat-

your computer is rack

If

battery backup is

Service 3-9

Fan Panel

Removal

Remove the fan panel as

1.

Set the power switch (LINE) to OFF, the Battery Enable switch to DISABLE, and

follows:

disconnect the power cord.

2.

Remove the front panel

by

grasping it at the indentations on the sides of the panel and

pulling the panel away from the chassis.

3.

Remove the eleven screws on the front of the chassis.

4.

Grasp the fan panel by its right and left edges and carefully tilt it away from the chassis. Do

is

not pull it out too hard or too far. Note that the fan panel

by

and chassis

5.

Disconnect the ac line configuration/fan power connector from the power supply, noting
whether the connector

the ac line configuration/fan power connector.

is

in P7 or

P8.

See Figure

2-2.

Remove the fan panel.

connected to the power supply

Replacement

Replace the fan panel
line configuration/fan power connector to the power supply, use connector
is

230

Vac,

or connector P8 if the ac line voltage

by

reversing the removal procedure. Note that when reconnecting the ac

P7 if the ac line voltage

is

115

Vac.

Fans

Removal

Remove a fan as follows:

1.

Set the power to OFF, disconnect the power cord, and set the Battery Enable switch to
DISABLE. Remove the fan panel, as described previously.

2.

Disconnect the fan power plug at the fan. Remove all four fasteners and the finger guard,
then remove the fan.

Replacement

Replace the fan by reversing the removal procedure. Be sure you orient the fan so that the

flow

is

direction of the air

3-1

0 Service

into the computer. Air

flow

direction

is

indicated on the fan housing.

Power Supply

Warning

,

Removal

Remove the power supply as

1.

Remove the fan panel, as described previously. Be sure you disconnect the
line configuration connector from P7 or

2.

Disconnect the ac line input connector from

3.

Disconnect the test point/external battery connector from P6.

4.

Disconnect the Battery Backup connector from the
required.

5.

Disconnect the Battery Enable switch connector from P5.

6.

Remove the

Before removing the power supply, set the LINE switch to the OFF
position and disconnect the power cord.
switch to the DISABLE position. Allow 90 seconds for high voltages
on

the power supply to discharge.

follows

two

screws that secure the bottom bracket of the power supply.

(refer to Figures

P8.

P9.

2-1

B.B.

Set the Battery Enable

and

2-2):

ON

or B.B.

OFF

115

Vac/230

terminal, as

Vac

7.

Grasp the power supply by the front edge and pull the power supply away from the

backplane.

Replacement

Replace the power supply by reversing the removal procedure.

Caution

I

Arrange all cables (ac line, test point/external battery, and Battery Backup)
for the shortest possible run over the power supply, to prevent them from
interfering with the fans.

When you connect the line configuration/fan power connector to the power
supply, be sure you use connector
nector P7 for a

230

Vac

power source.

P8 for

aIlS

Vac

power source or con-

Service 3-11

Battery Pack

Removal

Remove the battery pack as

1.

Make sure the power switch
Enable switch to DISABLE.

2.

Remove the fan panel, as described previously.

3.

Unplug the wires from the battery terminals.

4.

Loosen the battery assembly fasteners.

5.

Rotate the battery assembly toward yourself and remove the battery assembly.

6.

Remove the battery pack from the battery bracket.

Replacement

Replace the battery pack
section in Chapter

2.

follows:

is

set to OFF, disconnect the power cord, and set the Battery

by

following the instructions given in the Battery Backup Installation

Plug-in Cards

Caution

STATIC SENSITIVE DEVICE. Use anti-static handling procedures when
removing or installing a system plug-in card.

I

Removal

Remove a plug-in card from the card cage as

1.

Set the power switch to
set the Battery Enable switch to DISABLE.

2.

Remove the rear panel.

3.

If

applicable, remove the cable connector from the card and disconnect the ground lead

from the chassis. Firmly pull outward on the card extractor levers to remove the card.

3-12 Service

OFF

follows:

and disconnect the power cord.

If

battery backup

is

installed,

Replacement

Replace a plug-in card by reversing the removal procedure. Make sure you have set the switches
on the card correctly. All plug-in cards must be installed with the component side facing towards
the right. For the
right.

A990 CPU card, the side with the bank of eight LEDs must face towards the

EPROM and Time-of-Day Clock Chips

Caution

STATIC SENSITIVE DEVICE. Use anti-static handling procedures when

removing or installing a chip on the A990 CPU card.

I

Removal

To

remove the
CPU card from the computer, placing it on a flat surface. While observing the anti-static
handling precautions, carefully pull the chip from its mounting socket. Refer to Figure
chip locations.

Replacement

Replace the
reinstalling the chip, be sure to note the orientation of pin 1 as illustrated in Figure

EPROM

EPROM

or time-of-day clock chip, set the power switch to

or time-of-day clock chip

by

reversing the removal procedure. When

OFF

and remove the

3-2

3-2.

for the

Service 3-13

10J

J1

TEST Comec:tor

P1

~----

SW2

r I

A bank of 4

on the lower side of the
board,
upper bank of 8

Time-of-Day

Clock

XU1910

LEOs

is located

directly below the

LEOs.

Backplane

Removal

CACHE

lo~

o

Figure 3-2. A990

Chip

U1309

TEST

Comector

CPU

CPU
Chip

U1609

Pin 1

P2

Firmware

EPROM
XU1913

o

Card Chip Location Diagram

Remove the backplane

1.

Set the power switch to OFF and disconnect the power cord.

as

follows:

set the Battery Enable switch to DISABLE.

2.

Disengage all plug-in cards from the backplane.

3.

Remove the fan panel and power supply,

4.

Remove the connectors on the right-hand (primary) side of the line filter.

5.

Loosen the battery assembly screws and remove the battery assembly.

3-14 Service

as

described previously.

If

battery backup

is

installed,

6.

Remove the four screws that retain the left guide mounting bracket and remove the left guide
mounting bracket.

7.

Remove the seven screws that hold the rear shield to the backplane and remove the rear
shield.

8.

Remove the seven screws that hold the backplane and remove it.

Replacement

Replace the backplane by reversing the removal procedure.

Caution

I

When you reconnect the wires to the line filter, be sure you connect the
white wire to the top
wire to the casing.

lug,

the black wire to the bottom lug, and the green

Line Filter

Removal

Remove the line filter as

1.

Make sure the power switch
is

installed, set the Battery Enable switch to DISABLE.

2.

Remove the fan panel and line filter connectors, as described previously.

3.

Remove the four screws and washers that retain the line filter and remove the line filter.

Replacement

follows:

is

set to

OFF

and disconnect the power cord.

If

battery backup

Replace the line filter by reversing the removal procedure. When you reconnect the wires to the
line filter, be sure you connect the white wire to the top
the green wire to the casing.

lug,

the black wire to the bottom

lug,

and

Service 3-15

115/230 Vac Reconfiguration

Warning

G

The computer's ac line voltage configuration

configuration/fan power connector (refer to
steps to change the position of the ac line configuration/fan power connector.

1.

If

you are reconfiguring the power supply from

230

Vac

If

you are reconfiguring the power supply from

115

Vac

2.

Remove the front panel of the computer and the fan panel, as described previously.

3.

Remove the ac line configuration/fan power connector by squeezing the tabs at the ends of
the connector. Insert the connector in the appropriate plug

Reconfiguring the computer to operate from 115 or 230 Vac line volt-

age must be done only by qualified
from 115
switch

DISABLE, and disconnect the power cord. Failure to observe this
precaution can
supply.

label to the back panel of the computer.

label to the back panel of the computer.

Vac to 230 Vac configuration, or vice versa, set the power

on

the front of the box to

result

in

serious injury or

is

determined

P7 and P8 in Figure

personnel. Before changing

OFF,

the Battery Enable switch to

in

damage to the power

by

the position of the ac line

2-2).

Carry out the following

115

Vac

to

230

Vac

operation, apply the

230

Vac

to

115

Vac

operation, apply the

(P8 for

115

Vac,

P7 for

230

Vac).

4.

Replace the fan panel and the front panel.

5.

Be sure you use the correct ac power cord with the new configuration. Refer to Figures
and

1-2.

Power Distribution Diagram

Figure

3-3

is

the power distribution diagram for the 20-slot

box.

1-1

3-16 Service

LB200-73A

LINE

~:J

AC

Input

>

/h

Backup

~o

0

WARNING

Do not alter the connector attached to

P7

or

P8

while

ac

power

is applied.

Power

Supply

P9

"

I 1

Line

: "

Filter

3

,..

2

Line

..

>

d7

¢

Fuse

I

P5

I 1

~

>

I

~

"

2

,..

Batt
Fuse

I 4

--L-~-------------'~

"~~~--------------~

Battery
Pack

T~

__________

+..

>~

__

~3

__

~~

Battery
Backup
Circuits

230Vi

P7

~
~

I 8

~

~

I 5

I 4

~

~

I 1

I

P8 I

115V I 10

---"""«

43

46

39-42

1-28

29-32

33,34

35-38

47
48
49

1-36

37-50

I 9 (
I 8

I 7

6

5

4

3

2

P2

I

(
(
(
(
(

(

I

(

I

~1

(

I

(

I

--

r- Fan Power/

Configuration

--

-

Fan Power/

r-

Configuration

--

Phase 2

--

Phase 1
COMMON

+12

-12
+5M

r-

To

PON+

Backplane

PFW­MLOST-

+5V

COMMON

-

Figure

3-3.

Power

Distribution

Diagram

Service

3-17/3-18

4

Replaceable Parts

This section provides a list of replaceable parts and illustrated parts breakdowns of the computer.

Replaceable Parts Table

Table

4-1

lists the replaceable parts shown in Figures
table and in the illustrations
information for each part.

by

index numbers. The columns in the table provide the following

4-1,

4-2,

and

4-3.

Parts are referenced in the

1.

Index

No.

- The figure index number of the part as shown in Figure

2.

Description - The description of each part.

3.

HP

Part

No.

- The Hewlett-Packard part number for each part.

4-1,

4-2,

or

4-3.

Ordering Information

When ordering replaceable parts, address the order to the nearest Hewlett-Packard Sales and
Service

1.

2.

3.

Office. Include the following information for each part ordered:

Complete model number and serial number of the computer.
HP

Part number for each part.

Complete description for each part as provided in the replaceable parts list.

Parts Exchange Program

If

you have a defective processor card, memory card, or power supply, you can exchange it for an
operating assembly. For costs and other details of the exchange program, contact your nearest
HP

Sales and Service Office.

Replaceable

Parts

4-1

Table 4-1. List

of

Replaceable Parts

GENERAL

Index

PARTS

No. Description

1
2
3 Battery Support
4
5
6

7 Rear

8

9
10
11
12
13
14
15 Fan

16
17

18 Grommet
19 Terminal

20 Rivet,
21
22
23
24
25

26

27

28

29 Screw, PH, 8-32 x 0.375
30
31
32
33 Lock Washer, #8
34 Power Panel
35 Ground Bracket 12210-00031
36 Backplane 12210-60002

-

-

37 Test Point

Chassis 12151-60026
Rack Ear

-

Front

Deflector

Panel 5061-6642

Fan

Shield

Guide Mounting Bracket

Inner Rack Ear

Right
Left

Inner Rack Ear
Fan Cable
AC Filter Cable
AC Power Cable 12151-60007
Line Filter 9135-0312

Fan Guard 3160-0092
Card Guide, Narrow

Blind 0361-1072
Flat Washer, #6 3050-0228
Flat Washer, #8 3050-0139
Lock Washer, #6
Screw,

Screw, PH, 6-32 x 0.375
Screw, PH, 6-32 x 0.625
Screw, PH, 8-32 x 0.375
Screw, PH, 8-32 x 0.25

Screw,
Location Pin 12210-20001

-

PH,

6-32 x 1.875

FH,

6-32

Diode, Zener, 5V
Diode, Zener, 12V

Cable

PO

PO

HP

12151-00032
12210-00020

12210-00009

12210-00022

12210-00013
12151-00039
12151-00038
12151-60009
12151-60006

3160-0315

0403-0436
0400-0370
0360-1263

2190-0851

2360-0318
2360-0359
2360-0203
2510-0103

2510-0099
2510-0195
2360-0333

2190-0073

1221

1902-0939

1902-0941

12151-60008

Part No.

-

-

0-00038

4-2 Replaceable Parts

Table 4-1. List

of

Replaceable Parts (continued)

GENERAL

Index

38
39

40
41
42 Rear Panel 5061-6652
43
44
45

46

47
48
49

50

51

52

- Battery Backup Cable

-

-

-

PARTS

No. Description

Flat Washer, #6 3050-0228
Screw, PH, 6-32 x
Screw, 8-32 x 0.375 2510-0045
Screw,

Power Switch

Power
Front
Grill, Flat
Front
Air Filter (Foam)
Filter Retainer
Snap-in Plunger 1390-0365

Snap-in Grommet

Ball Stud

Battery Pack

Power Supply

Cable Retainer Hardware Kit

FH,

Receptacle

Panel 12151-40001

Panel Support

0.374

6-32 x 0.312 2360-0116

HP

2360-0359

3101-0402
1251-4470

12210-00026
12210-00025

4208-0405

12210-00027

1390-0366

0510-1107

12151-60010

1420-0304

0950-2100

12151-60015

Part No.

A990 CPU CARD AND MEMORY

-

-

-

-

-

-

-

-

-

-

A990 CPU Card

Time-of-Day Clock Chip

Firmware EPROM Chip

768 KByte ECC Memory Array
3 MByte ECC Memory Array

8 MByte ECC Memory Array

Connector for 1 Memory Card

Connector for 2 Memory Cards

Connector for 3 Memory Cards

Connector for 4 Memory Cards

12990-60202

1826-2068
12990-80106
12220-60001
12221-60001
12221-66001
12230-60001
12230-60002
12230-60003
12230-60004

Replaceable Parts 4-3/4-4

-

-.;:::::::

---

-

-

o 0

Side View

wHh

Shroud Removed

Figure 4-1.

16-Slot

Box

Exploded View

(Front) with

Internal Disks

Replaceable Parts 4-5/4-6

(2

Places) @ ®

\..--.

(2

Places)

~~-

®®~

~--~--~~

~~~

..... -

....

~--<""~

.-

~

-~< ---~

<

._. _ :c:-

<::

---<

"--0

<.. -<

.c-

---

. -

~

-.

-,.-~

---.:::::

------

@

@

@

F"

Igure 4-2 20 S . - lot B ox Exploded

V·

lew

(Rear)

Replaceable P

arts

4-

7/4-8

®

(3Plac~"""

22)--_-

.......

~---®

$

•

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Figure 4-3. 16-510t

Box

Exploded View

(Rear)

Replaceable Parts

4-9/4-10

rljpi

~~PACKARD

HEWLETT

Manual

Part

No.

02959-90002

Copyright © 1992

Hewlett-Packard
Printed

in

USA 02/92

Company

Manufacturing

Part

No.

02959-96002 .

1IIIIIIIlll~IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII~1111III