OKIDATA DOC-IT3000, Service Manual

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Table of Contents Page
Service Guide DOC-IT3000/4000
0 About This Manual
Front Cover 1
Manual Revision & Copyright Information 2
1 Product Specifications
1.0 General Description 3
1.1 General Specifications 4
1.2 DOC-IT Controller Specifications 5
1.3 Printer Specifications 6
1.4 Facsimile Specifications 7
1.5 Scanner Specifications 8
1.6 Copier Specifications 9
1.7 Options 10
1.8 Consumables 11
1.9 Reliability Data 12
1.10 Agency Approvals 13
2 Principles of Operation
2.1 Electrical Principles Of Operation 14
....2.1.01 Main Control Board 15
........CPU (80C154) 16
........Memory Map (on Master CPU Side) 17
........Address Decoder 18
........Program ROM 19
........RAM 20
........WRITE 1 Waveforms (OE Clock) 21
........Image Control LSI 22
........Memory Configuration 23
........External RAM Access 24
........Scanner Control LSI 25
........Line Memory Read/Write Waveforms 26
........Peripheral Interface Controller 27
........Operator Panel 28
........Serial Video Interface 29
........Image Sensor Control Board 30
2.2 Printer Control - Principal Hardware Components 31
........Printer Unit Block Diagram 32
....2.2.02 Printer Control Board 33
....2.2.03 Fuser Unit 34
....2.2.04 Main Motor 35
....2.2.05 LED Array 36
....2.2.06 Sensor and Switch Control 37
....2.2.07 Resist Motor 38
....2.2.08 Fan 39