Xerox 4400DT Service Manual - Page 15
Cleaning and Maintenance, FRU Disassembly, Parts Lists, Theory of Operation - fuser
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Cleaning and Maintenance 5-1 Service Preventive Maintenance Procedure 5-1 FRU Disassembly 6-1 List of Procedures 6-1 Covers and Trays 6-6 Tray 1 6-18 Paper Feed (Tray 1 6-28 Paper Feed (MPT 6-44 Paper Transportation 6-57 Exit Assembly and Fuser 6-65 Xerographics 6-79 Main Drive 6-84 Electrical 6-87 Stacker 6-101 Optional Paper Feeder 6-120 Duplex Unit 6-141 Envelope Feeder 6-157 Parts Lists 7-1 Parts List Index 7-1 Using the Parts Lists 7-1 Theory of Operation 8-1 Section Contents 8-1 Print Process Overview 8-3 Print Process Description 8-5 The Paper Path 8-11 Drive Flow 8-14 Engine Logic Board and Front Panel Functions 8-22 Image Processor Board 8-22 Power Supplies 8-23 Interlocks 8-24 xiv Phaser 4400 Laser Printer Service Manual
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xiv
Phaser 4400 Laser Printer Service Manual
Cleaning and Maintenance
5-1
Service Preventive Maintenance Procedure . . . . . . . . . . . . . . . 5-1
FRU Disassembly
6-1
List of Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Covers and Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Paper Feed (Tray 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28
Paper Feed (MPT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44
Paper Transportation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-57
Exit Assembly and Fuser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-65
Xerographics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-79
Main Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-84
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-87
Stacker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-101
Optional Paper Feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-120
Duplex Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-141
Envelope Feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-157
Parts Lists
7-1
Parts List Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Using the Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Theory of Operation
8-1
Section Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Print Process Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Print Process Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
The Paper Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
Drive Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
Engine Logic Board and Front Panel Functions . . . . . . . . . . . 8-22
Image Processor Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22
Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Interlocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-24