Filter
Top Products
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
(EEPROM)
25
....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