Table of Contents | Page |
Service Guide ML520/521 |
|
0 About This Manual |
|
Front Cover | 1 |
Copyright Information | 2 |
1 Product Specifications |
|
1.1.01 General Information | 3 |
....1.2 Physical Specifications | 4 |
....1.3 Power Requirements | 5 |
....1.4 Environmental Conditions | 6 |
....1.5 Agency Approvals | 7 |
....1.6 Operational Specifications | 8 |
....1.7 Paper Specifications | 9 |
....1.8 Memory Specifications | 10 |
....1.9 Consumables | 11 |
....1.10 Options - Cut Sheet Feeders | 12 |
........1.10.02 Pull Tractor Kit | 13 |
........1.10.04 Bottom Push Tractor Kit | 14 |
........1.10.05 Serial Interface | 15 |
........1.10.06 Roll Paper Stand | 16 |
........1.10.08 OKISmart Typer Utility | 17 |
....1.11 Reliability | 18 |
2 Principles of Operation |
|
2.1 Electrical Operation | 19 |
....2.1.01 Main Control Board | 20 |
........Block Diagram | 21 |
........Program ROM | 22 |
........RAM | 23 |
........LSI | 24 |
........Electrically Erasable Programmable Read Only Memory | 25 |
(EEPROM) |
|
....2.1.02 Initialization | 26 |
....2.1.03 Parallel Interface Control | 27 |
....2.1.04 Print Control | 28 |
........LSI/Printhead Interface | 29 |
........Gap Adjust Control | 30 |
........Print Compensation Control | 31 |
....2.1.05 Space and Line Feed (SP/LF) Motor Control | 32 |
........Line Feed Motor Control | 33 |
........Space Motor Control | 34 |
........Encoder Disk | 35 |
....2.1.06 Operation Panel | 36 |
....2.1.07 Alarm Circuit | 37 |
........Low Motor Drive Voltage Alarm | 38 |
