Torch Triple X Manuale utente

TRIPLE X

SERVICE MANUAL

Issue: 1 .

Date: March 198

;1,i

Part No: 117-1208'·:

Triple X

Triple X - a desk-top workstation which runs the latest generation of office automation e.g. Uniplex and productivity

software and the full range of scientific and technical applications. Triple X offers unprecedented levels of user

convenience and work efficiency. Triple X uses the Unix V operating system developed by AT&T.

Multi-tasking

Its simplest

form

With the unique software package, OpenTop, Torch has released the power of Unix in a user friendly, multi tasking

form which everybody can understand.

Data Security

assured

Triple

Xis

a total concept based

reliability, simplicity, performance .... and security. Only the operator possessing

the appropriately coded floppy disc can control access to the system. Losing data through accidentally switching off

is difficult, because Triple X checks with the operator that 'power down' really is required, and there is a battery backed

configuration memory for added peace of mind.

The

system

you

can

bulld

Additional memory can be incorporated utilising the VME bus.

Colour display

A 14" high resolution colour monitor offers a razor sharp information display. Operating colours may be altered using

the mouse to suit the operator's preference. Standard resolution is 736 x 256 pixels with a selection of four colours from

a full palette of 256.

Flexibility which works harder for

you

Triple X works harder throughout the office than any comparable desktop system. Integrated software packages cover

the full range of office automation, accounting, database management, wordprocessing, communications functions.

The system also works with well established programming languages including fourth generation languages, assembler

and Expert systems.

Torch Technology Ltd., Abberley House, Great Shelford, Cambridge CB2 5LO, England.

Tel. UK: 0223 841000, Intl: +44 223 841000, Fax UK: 0223 840223, Intl: +44 223 840223

Email: [email protected], AppleLink: UK0058

TORCH

HCHNOlOGY

lTD

Specifications

Processors

6801

O16/32 bit microprocessor

68451

MMU

68450 4 Channel DMA controller

6303 service processor

7990 Lance Ethernet controller

NCR8350 SCSI controller

Memory

2Mb dynamic RAM standard.

50 bytes of batterybacked RAM

(configuration.serial number & self

test)

16Kbytes ROM (selftest, diagnostic &

startup software)

Mass

storage

40Mb winchester disc drive with SCSI

controller. 80Mb, 190Mb and 300Mb

drives also available.

Double sided 5 1/4" 720 Kbyte floppy

disc drive, capable of reading IBM PC

discs.

Video

Display

14" standard display fully bit-mapped

736x256 pixels.

Four colours from full palette of 256.

Total of six display resolutions up to

high resolution mode 736x512 and

colour display of up to 16 from a palette

of 256.

Audio

output

Variable frequency and duration, single

channel, to speaker

keyboard.

Graphics

Line, arc, ellipse, area fill, shading,

half-tones etc.

Multiple fonts, proportional spacing and

characters.

Open

Top

Two button mouse -no special surface

required.

Intelligent keyboard to DIN standard.

Numeric keypad and separate cursor

keys.

Full up/down coding, all keys

programmable to any string.

Full windows, icons, mouse, pointer,

menu features accessible to all Unix

programs.

Network

IEEE802.3 Ethernet with B-Net TCP/IP

software using

board LANCE chip

set.

Operating

system

Complete Unisoft Uniplus+ Unix

System

Includes windowing, desktop

manager, shared libraries, fast

'exec' and record locking.

Mora than 300 utilities, including C

compiler,

vi,

csh, yacc, mail, uucp.

Peripheral

connections

Three serial ports total. Expandable

to 11.

Two asynchronous/synchronous

serial ports with maximun transfer

rate

excessof 64 K/bits per

second. Used for X25, or other

software for terminal support (multi

user mode).

Ona asynchronous serial port for

printer, external modem or terminal

support.

Internal

Functions

Battery powered clock.

Intelligent PSU with software

controlled touch on/off switch.

Turbofan cooling system.

XBUS (Acorn BBC micro Bus

compatible) interface.

Dimensions

Main body 450x310x130mm

Keyboard 450x160x40mm

Mouse

60x1

OOx34mm

E & OE

Table

Contents

----------------------------

1 - INTRODUCTION

CHAPTER 1: INTRODUCTION

1.1 THE PURPOSE

THE

MANUAL

The purpose of this manual is to provide all the information necessaryto find and correct faults

in the Triple Xworkstation.

1.2 THE INFORMATION CONTAINED IN THE MANUAL

The information contained in this manual. has been used by Torch Technology's service

department for many years and enables a service engineer to locate a fault to one of the

following parts of the Triple

• the power supply unit

• the on/off switch

• the power supply cables

• the base processor board

• the hard disc unit

• the disc controller board

• the hard disc data

and

control cables and the

SCSI

cable

• the floppy disc unit

• the keyboard

• the mouse

• the monitor.

When one of these parts is found to

faulty, it is replaced as a unit.

This manual does not describe how to mend the parts themselves.

TRIPLEX

SERVICE

MANUAL---------------------

1 - 1

1.3 GLOSSARY

TERMS USED

THE MANUAL

6303R

68010

68450

68451

Backplane

Backup

It is impossible to avoid using some scientific terms and abbreviations in a service manual,

these are included here at the start. Some of them, such

HDU, are used all the time and

it is important that the engineer is familiar with them before reading the rest of the manual.

The service processor mounted on the base processor board is a 6303R. This is an 8-bit

device which controls the power-up and power-down sequence of the Triple

and also looks

afterthe keyboard/mouse and sound when the Triple

Xis

running.

The main processor mounted on the base processor board is a 68010. This is a 16-bit device

of the Motorola 68000 family.

The 68450 is a direct memory access controller (DMAC). When the processor is not using the

bus, the DMAC allows peripherals to write and read data to and from main memory (including

any VME memory).

The 68451 is a memory management unit (MMU).

is programmed at power-up to know what

memory is available on the main board and on the VMEbus, and then translates the logical

address provided bythe

6801

Ointo the physical address which is put on the bus.

Alternating current. This term is used to describe any voltage which varies regularly with time

between a positive and a negative value.

is most usually applied to sinusoidal voltages such

as the mains supply.

On the slim and quin rings, the VME backplane consists of a common set of power lines,

terminated data and address buses, and the connectors into which a VME board can be

plugged.

A backup is a copy of any program orfile which is kept in case the original is lost

damaged. A

backup is usually kept on a medium which can

removed from the machine, such

a floppy

disc

a streaming tape cartridge. A backup on the same hard disc as the original is

good if

the hard disc itself fails.

Base processor

board

Baud

BBC

BBRAM

The main board

the Triple X which is mounted in the base is called the base processor

board.

A unit of measurement of the speed of serial data transmission. 1 baud is 1 bit per second.

The British Broadcasting Corporation. (The BBC made a series

television programs to

educate people about microcomputers, and a certain British microcomputer carried the BBC

name. The Triple X has an external bus which emulates the 1MHz bus used on the BBC

microcomputer.)

Battery-backed RAM. The Triple X has a small amount of battery-backed RAM which holds the

serial number and permissions. The Triple X won't run if the serial number isn't stored in the

BBRAM.

1 - 2

---------------------

TRIPLEX

SERVICE

MANUAL

3.3

The

slim

ring

3.3.1

Removing the slim

ring

3.3.2 Replacing

the

slim

ring

3.3.3 Fitting a

VME

card

3.4 The quin ring

3.4.1

Removing the quin ring

3.4.2 Removing the quin

ring

PSU

3.4.3 Replacing the quin

ring

PSU

3.4.4 Replacing the quin

ring

3.4.5 Fitting

VME

cards

3.5 Keyboard

3.5.1

Disassembly

3.5.2 Reassembly

3.6

Mouse

3.7 13" colour monitors

3.7.1

Precautions

3.7.2 Removing the Mitsubishi monitor casing

3.7.3 Replacing the Mitsubishi monitor casing

3.7.4 Removing the Sony monitor casing

3.7.5 Replacing the Sony monitor casing

CHAPTER 4 DESCRIPTION OF TRIPLE X

3-9

3-10

3-11

3-12

3-13

3-14

3-15

3-16

4.1

The

base

processor board 4-2

4.2

The

power supply unit

and

rechargeable battery 4-3

4.2.1

Functional description 4-3

4.2.2

The

sequence of events after power-up 4-4

4.3

The

VMEbus,

the limpet board

and

the

VME

"rings" 4-4

4.4

The

SCSI

bus,

the

hard

disc unit

(HOU),

the

floppy disc unit

(FDU),

and

the

OMTI

board

4-5

4.5

The

serial ports 4-5

4.6

The

Ethernet

por:t

4-6

The

XBUS

4-6

4.8 Video/audio output and the monitor 4-6

4.9 Keyboard/mouse input 4-6

4.1

The

real

time clock

and

battery-backed

RAM

4-6

TABLE

CONTENTS

CHAPTER

INTRODUCTION

1.1

The

purpose

the

manual

1.2

The

information contained

the

manual

1.3

Glossary

terms

used

the

manual

1-1

1-2

CHAPTER

BEFORE

YOU

START

2.1

Safety

2-1

2.1.1

The

service engineer

2-1

2.1.2

The

Triple

2-1

2.2

What

you

will

need

2-1

2.2.1 Test equipment

2-1

2.2.2 Tools 2-2

2.3 Static handling precautions 2-2

2.4

The

Triple

Xworkstation 2-3

2.5 Triple Xconfigurations 2-4

2.5.1

VME

2-4

2.5.2

Hard

disc

and

SCSI

controller 2-4

2.5.3 Monitor 2-4

CHAPTER

DISASSEMBLY AND REASSEMBLY

' 3.1 Introduction

3-1

.1.1

Before

you

start

3-1

3.1.2

The

Triple X "rings" 3-1

3.2

The

standard

Triple.

(no

extra

rings

fitted)

3-3

3.2.1

Opening

the

case

3-3

3.2.2

Removing

the

disc

ring

from

the

base

3-3

3.2.3

Removing

the

floppy disc

unit

from

the

disc

ring

3-4

3.2.4

Removing

the

SCSI

data controller

board

(OMTI)

fr()m

the

Eltsc

ring

3-4

3.2.5

Removing

the

hard

disc unit frotn

the

disc

ring

3-5

3.2.6

Replacing

the

hard

disc

unit

3-5

3.2.7

Replacing

the

SCSI

data

controller

board

3-5

3.2.8 Replacing

the

floppy disc unit 3-6

3.2.9

Removing

the

power

supply

unit from the

base

3-6

3.2.10

Removing

the

limpet

board

from

the processor

board

3-6

3.2.11

Removing

the

processor

board

from the

base

3.2.12

Replacing

the

base

processor board

3.2.13

Replacing

the

limpet

board

3-7

3.2.14

Replacing

the

power supply unit 3-8

3.2.15

Replacing

the

disc

ring

the

base

3-8

3.2.16 Closing

the

case

3-8

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