Index Everest-D, Service Manual

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Version 2.0
Page 1
INDEX EVEREST SERVICE MANUAL
Index Braille Printer Company
Table of contents
1. Mechanics 2
1.1 Disassembling 2
1.1.1 Backplate 2
1.1.2 Expose the main board 3
1.1.3 Open the front panel cover 3
1.1.4 Right casing 4
1.1.5 Left casing 4
1.1.6 Remove the main board 5
1.1.7 Loosen the front panel cover 5
1.1.8 Fan 6
1.1.9 Front panel cover indicator 6
1.1.10 Transformer 7
1.1.11 Roll bearing, left side. 7
1.1.12 Stepper motor, paper feeding 8
1.1.13 Driving belt 8
1.1.14 Pulleys 9
1.1.15 Right roll bearing 9
1.1.16 Roll axle 10
1.1.17 Printing head 10
1.1.18 Front panel board 11
1.1.19 Printing head board 11
1.1.20 Steering dowels 12
1.1.21 Plastic films 12
1.1.22 Hammers 13
1.1.23 Casing 13
1.1.24 Back bar 14
1.1.25 Rubber damper 14
1.1.26 Anvils 15
1.1.27 Axle 15
1.1.28 Gliding bearings 16
1.1.29 Stepper motor, printing head 16
1.1.30 Gear wheel, printinghead motor 17
1.1.31 Reference pulse sensor 17
1.1.32 Gear wheel, paper feeding 18
1.1.33 Sheet feeder 18
2. Service instructions 19
2.1 Adjust printing head
reference pulse offset
19
2.2 Internal printer test program 19
2.3 Front panel 19
2.4 Hammer configuration 20
2.5 Fault messages. 20
2.5.1 Failure "100" No reference-pulse 20
2.5.2 Failure "Front panel open". 20
2.5.3 Failure "Paper length fault". 20
2.5.4 Failure "Paper jam". 20
2.5.5 Failure "140". 20
2.5.6 Failure "150" 20
2.5.7 Failure "160" 20
2.5.8 Failure " 170" 21
2.6 Reference pulse offset. 21
2.7 Paper sensor adjustment 21
2.8 Voltage compensation. 21
2.8.1 Run Volt 21
2.8.2 Change parameters 22
2.8.3 Send file to Everest 22
3 Printer modules 24
3.1 Screws nuts and glue 24
3.2 Printinghead 24
3.3 Chassis 24
3.4 Transmission 25
3.5 Shipping material 25
3.6 Electronics 25
3.7 Component locations 26
4 Electronic components 31
4.1 Printinghead board 31
4.2 Main board 33
5 Shematic descriptions 36
5.1 Mainboard layout 36
5.2 CPU 37
5.3 Memory map decoding 38
5.4 Dynamic Ram 39
5.5 EPROM & EEPROM 40
5.6 Stepper motor drivers -
printinghead interface
41
5.7 Keyboard Indterface &
Speech synthesis
42
5.8 Centronics interface 43
5.9 RS-232 44
5.10 Power supply 45
5.11 Printing head - paper indicator 46
5.12 Printing head - solenoid drivers 47
6 Cables 48
6.1 Serial communication 48
6.1.1 RS232-C circuit summary. 48
6.1.2 Index RS232-C configuration 49
6.1.3 Cable INDEX IBM-PC 49
6.1.4 Cable INDEX-AT 49
6.1.5 Cable configuration
Index - Apple McIntosh
50
6.2 Centronics interface 50
6.2.1 Centronics inteface standard 50
7 Disassembling flowchart 51