Acorn FileStore E20 Service Manual Page 101
- Page / 164
- Table of contents
- BOOKMARKS
- FileStore Service Manual 1
- Contents 3
- Introduction 9
- Chapter 1 10
- Part I: FileStore E01 11
- 1.1 Equipment description 13
- 1.2 Function 13
- 1.3 Prerequisites for use 13
- 1.4 Enhancements 13
- 2. E01 Specification 14
- Chapter 2 15
- 2.2 Physical 16
- 2.2.2 E01 packaging 16
- 2.3 Operation 16
- 2.4 Signal connectors 17
- 2.5 Power input 18
- 2.6 Power supply 19
- 2.7 Safety standards 19
- 2.9 Environment 20
- 2.10 Operational lifetime 21
- 3.1 Disassembly procedure 23
- 3.2 Assembly procedure 23
- Chapter 3 24
- 4. E01 Circuit description 25
- 4.3 The RESET circuitry 26
- 4.4 Battery backup 26
- 4.5 The central processor 26
- 4.7 Read-only memory (ROM) 26
- 4.8 The Econet port 27
- 4.9 The disc interface 27
- 4.13 Main signal paths 28
- 4.13.3 Address decoding 29
- 4.14 Link survey 32
- 5. E01 Fault finding 33
- Part II : FileStore E20 35
- 1.1 Packaging 36
- 1.2 Identification 36
- 2. E20 Specification 39
- 2.4 Host Adaptor 40
- 2.6 Power input 42
- 2.7 Power supply 42
- 2.8 Safety standards 43
- 2.10 Environment 43
- 2.11 Emitted Acoustic Noise 44
- 2.12 Operational lifetime 44
- 3.2 Serviceable parts 45
- 4. E20 Circuit description 47
- 4.3 Bus phases 48
- 4.3.1 Bus free phase 49
- 4.3.2 Selection phase 49
- 4.4 The reset condition 50
- 4.5 The 2MHz bus 50
- 4.6.2 Buffering 52
- 4.6.3 Termination 53
- 5. E20 Fault finding 55
- Part III : FileStore E01S 57
- 2. E01S Specification 61
- 2.7 Safety Standards 65
- 4. E01S Circuit description 73
- 4.4 Sequential Circuits 75
- 4.4.2 Memory read / write 76
- 4.4.3 ROM CONTROL 76
- 4.4.4 INTON/INTOFF 77
- 4.5 Battery backup 78
- 4.6 The Econet port 78
- 4.7 The disc interface 78
- 4.10 Main signal paths 80
- 4.11 Link survey 83
- 5. E01S Fault finding 85
- * * * * 86
- +5V Gnd Gnd +12V 86
- 1 2 3 4 86
- 5.2 Initialisation 88
- 5.3 Net link 88
- 5.4 Final checks 88
- 2. E40S/ E60S Specification 93
- 2.3.1 Controls 94
- 2.3.2 Indicators 94
- 2.10 Emitted acoustic noise 97
- 2.11 Operating lifetime 97
- 3.2 Parts not serviceable 101
- 3.3 Assembly procedure 101
- 4.1 Bus phases 103
- 4.1.4 Termination 105
- 5. E40S/E60S Fault finding 107
- 5.4 Bus lines 108
- 5.2 Address decoding 108
- 5.3 Hand shaking 108
- 5.5 Final checks 109
- Appendix A. Test Equipment 111
- Equipment required 111
- Setting up 111
- Connecting the test station 111
- Connecting the UUT 111
- Test procedure 112
- Selecting menu entries 112
- FservCopy 113
- FServEdit 114
- FServFmt 115
- FServInit 116
- FServCMOS 117
- FServSoak 118
- FServTest 119
- FileStore E01 119
- FileStore E01S 120
- Validation procedure 121
- Modifying the test software 121
- Appendix A Test Equipment 122
- Appendix B. Parts lists 123
- Appendix B Parts lists 124
- Appendix C. Diagrams 149
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