Acorn FileStore E01, Service Manual

Page: 3 / 164

FileStore Service Manual iii
Contents
CONTENTS
III
INTRODUCTION 1
PART I: FILESTORE E01 3
1. Introduction to the E01 unit 5
1.1 Equipment description 5
1.2 Function 5
1.3 Prerequisites for use 5
1.4 Enhancements 5
2. E01 Specification 6
2.1 General specification 6
2.2 Physical 8
2.2.1 E01 unit 8
2.3 Operation 8
2.3.1 Indicators 8
2.3.2 Controls 8
2.4 Signal connectors 9
2.4.1 FileStore E01 expansion bus pinouts 9
2.4.2 Econet port 9
2.4.3 Printer port 10
2.5 Power input 10
2.5.1 Power input requirements 10
2.5.2
Mains interruptions (‗Brown out‘)
10
2.5.3 Power input plug and cable description 11
2.6 Power supply 11
2.6.1 Power required 11
2.6.2 Specification 11
2.7 Safety standards 11
2.8 Electromagnetic interference 11
2.8.1 Standards 11
2.8.2 Mains transients 11
2.8.3 Electrostatic discharge 12
2.9 Environment 12
2.9.1 Operating 12
2.9.2 Storage and shipping 12
2.10 Operational lifetime 13
3. E01 Disassembly and assembly 15
3.1 Disassembly procedure 15
3.2 Assembly procedure 15
4. E01 Circuit description 17
4.1 Timing 17
4.2 Sequential circuits 17
4.2.1 RAM refresh 17
4.2.2 ROM/RAM latch 17
4.2.3 INTON/INTOFF 17
4.2.4 Econet clock generation 17
4.3 The RESET circuitry 18
4.4 Battery backup 18
4.5 The central processor 18