Service manual

FileStore Service Manual iv
4.6 Random access memory (RAM) 18
4.7 Read-only memory (ROM) 18
4.8 The Econet port 19
4.8.1 The Econet network 19
4.8.2 Econet module 19
4.8.3 Econet clock and active terminator 19
4.9 The disc interface 19
4.10 The printer/VIA circuitry 20
4.11 The real-time clock (RTC) 20
4.12 The FileStore Expansion bus and E20 interface 20
4.12.1 Termination 20
4.13 Main signal paths 20
4.13.1 Data bus 20
4.13.2 Address bus 20
4.13.3 Address decoding 21
4.13.4 Machine Operating System function calls 22
4.14 Link survey 24
5. E01 Fault finding 25
5.1 Stage 1: Initialisation 25
5.2 Stage 2: Net link 25
5.3 Stage 3: Final checks 25
PART II : FILESTORE E20 27
1. Introduction to the E20 unit 28
1.1 Packaging 28
1.2 Identification 28
2. E20 Specification 31
2.1 General specification 31
2.1.1 Hardware components 31
2.1.2 Software components 31
2.2 Physical 31
2.2.1 E20 unit 31
2.2.2 E20 packaging 31
2.3 Operation 32
2.3.1 Controls 32
2.3.2 Indicators 32
2.4 Host Adaptor 32
2.5 FileStore E20 Expansion Input/ Output Ports 32
2.5.1 The FileStore E20 expansion bus connector 32
2.6 Power input 34
2.6.1 Power input requirements 34
2.6.2 Mains interruptions (‗Brown out‘) 34
2.6.3 Power input plug and cable description 34
2.7 Power supply 34
2.7.1 Power required 34
2.8 Safety standards 35
2.9 Electromagnetic interference 35
2.9.1 Standards 35
2.9.2 Mains Transients 35
2.9.3 Electrostatic discharge 35
2.10 Environment 35
2.10.1 Operating 35
2.10.2 Storage and shipping 36
2.11 Emitted Acoustic Noise 36
2.12 Operational lifetime 36