Multifunction Peripherals for PCs

Technology, Troubleshooting and Repair

By: Marvin Hobbs

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Paperback | 1 January 2000

At a Glance

Paperback
232 Pages

Dimensions(cm)
25.4 x 18.42 x 1.27

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$193.99

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Multifunction devices combine the essentials of a fax machine, printer, scanner, and copier into one peripheral for small and home offices. As the market for this equipment grows, the need for skilled repair and maintenance increases. Unfortunately the service documentation supplied by the manufacturers is completely inadequate making the repair jobs even harder and more expensive. Marvin Hobbs teaches you how multifunction peripherals work in theory and in practice with lots of hands-on examples and important troubleshooting and repair tips you don't want to miss.

This book fills a gap in the literature, and will be a welcome addition to the library of any technician or do-it-yourselfer.

Written by a knowledgeable practitioner with inside industry information
Fully covers the troubleshooting and repair of multifunction peripherals
A must-have instructional and reference title for anyone who works with computer peripherals!

Industry Reviews

This resource explains how multifunction peripherals work in theory and in practice, with lots of hands-on examples and important troubleshooting and repair tips.
-Poptronics

Hobbs's guide includes very clear technical illustrations, an abbreviation guide, a glossary of terms, troubleshooting flow charts, and operational theory. While general guides cover many multifunction device maintenance and repair issues, this book provides valuable information on the special failures that come with complicated modern multifunction devices. - Library Journal 2004

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You Can Find This Book In

Non-Fiction Computing & I.T.Computer Hardware Storage Media & Peripherals Education Careers Guidance Engineering & Technology Electronics & Communications Engineering Communications Engineering & Telecommunications Television Technology Personal Computers PCs & IBM Compatible Personal Computers

Computer Science Computer Networking & Communications Computer Programming & Software Development

Abbreviations	p. xiii
Preface	p. xv
Introduction	p. xvii
The Evolution of the MFP from the Fax Machine	p. 1
PC and Fax Machine Linked	p. 1
External Interfaces between Fax and PC	p. 1
A Multifunction Device	p. 2
Multifunction Printer	p. 5
An MFP for Combining and Routing Image Data	p. 6
Printers in Fax Machines	p. 9
Thermal Paper Printing	p. 9
Thermal Transfer Printers	p. 10
Printers in MFPs	p. 11
Plain Paper Monochrome Printing	p. 11
Electrophotographic Printing	p. 12
The Laser Beam Printer	p. 12
Inkjet Printers	p. 13
The Mechanism and the Cartridges	p. 13
Color Inkjet Printers in MFPs	p. 15
Scanners in MFPs	p. 15
Monochrome Scanners	p. 15
Color Scanners	p. 16
Servicing Considerations	p. 17
Servicing Multifunction Peripherals for PCs	p. 19
Service Mode	p. 19
How to Enter Service Mode	p. 19
Options in User and Tech Modes	p. 20
Options in Service Mode	p. 20
Changing Options	p. 20
Test Mode	p. 24
Printer Test	p. 24
Ink Level Check	p. 24
Nozzle Test	p. 25
Scanner Test	p. 26
Modem Test	p. 26
ROM Test	p. 26
Key Test	p. 26
Memory Dump Test	p. 26
Report Printout	p. 26
Selectable Reports	p. 26
How to Print Reports	p. 27
LCD Display	p. 27
During Communication	p. 27
If a Communication Problem Occurs	p. 27
Scanner Mechanism	p. 27
Automatic Document Feeder Mechanism	p. 27
Contact Image Sensor	p. 28
Document Sensors	p. 28
Print Mechanism	p. 28
Paper Feed Mechanism	p. 28
Home Assembly	p. 28
Circuitry	p. 28
Troubleshooting Flowcharts	p. 29
Disassembly and Reassembly	p. 30
General Precautions on Disassembly	p. 30
Scanner Section	p. 31
Covers	p. 35
Main Chassis	p. 36
Remote Diagnostics	p. 39
Precautions	p. 41
Safety Precautions	p. 41
ESD Precautions	p. 46
Lithium Battery Precautions	p. 48
Inkjet Printers in MFPs: I	p. 49
Structure and Operation	p. 49
Printer Mechanism	p. 50
Outline of the Printer Mechanism	p. 50
Print Cartridge	p. 51
Color Print Cartridge Structure	p. 52
Inkjet Head Unit Structure	p. 53
Purge Unit	p. 55
Purge Unit Functions	p. 55
Purge Unit Structure	p. 56
Carriage	p. 56
Carriage Functions	p. 56
Carriage Section Structure	p. 57
Paper Feed/Sheet Feeder	p. 58
Paper Feed/Sheet Feeder Functions	p. 58
Paper Feed/Sheet Feeder Section Structure	p. 59
Sensors	p. 60
Printer Board Section	p. 61
Outline of the Printer Electrical Section	p. 61
Inkjet Printers in MFPs: II. Parts Replacement and Service Precautions	p. 67
Parts Replacement Procedure	p. 67
Installing the Print Cartridge	p. 67
Print Cartridge Container	p. 72
Paper Settings	p. 73
Paper Size	p. 73
Paper Type	p. 73
Paper Weight	p. 75
Personal Safety Precautions	p. 75
Moving Sections of the Unit	p. 75
Ink Path	p. 75
Ink Mist	p. 76
Electrically Live Sections	p. 76
Print Cartridge Aluminum Plate	p. 76
Machine Precautions	p. 77
Print Cartridge Handling	p. 77
Ink Electroconductivity	p. 79
Printer Handling	p. 81
Spur Deformation Precaution	p. 81
Precautions to Prevent Damage from Static Electricity	p. 81
Ink Leakage Precautions	p. 81
Waste Ink Drying Precautions	p. 81
Precautions for Disassembly/Assembly	p. 81
Laser Printers in MFPs	p. 83
Laser Unit	p. 83
Operational Theory	p. 83
Laser Beam	p. 84
Collimator Lens	p. 84
Polygon Scanner	p. 85
f-[theta] Lens	p. 85
Timing Sensor	p. 85
The Print Process	p. 85
Charge and Exposure	p. 86
Development	p. 86
Transfer and Separation	p. 87
Fusing	p. 87
Cleaning and Conditioning	p. 87
Replaceable Cartridges	p. 87
Fuser Unit	p. 88
Main Motor Control Circuit	p. 88
Polygon Motor Clock Generator	p. 90
Fuser Controller (Digital)	p. 90
LBP Control Circuit (Digital)	p. 90
Fuser Control Circuit (Analog)	p. 92
Amplifier and Comparator	p. 93
Toner Sensor Circuit	p. 93
Main Motor Drive Circuit	p. 94
LSU Interface Circuit	p. 95
Polygon Scanner Motor Drive Circuit Interface	p. 95
Laser Diode Control Circuit Interface	p. 95
Recording Paper Sensor	p. 96
Jam Sensor	p. 96
Laser Power Select Signal	p. 96
Laser Interlock Switch	p. 97
24V Interlock Switch	p. 98
Detection of Polygon Motor Rotation	p. 98
Detection of Fan Motor Rotation	p. 99
General Instructions for Maintenance	p. 99
Recommended Tools	p. 99
Cleaning Recommendations	p. 99
Tungsten Wire Cleaning	p. 100
Lubrication	p. 100
Cleaning the Primary Corona Wire	p. 100
Adjusting the Print Density	p. 100
Replacing the Ozone Filter	p. 102
Troubleshooting a Defective LBP Section	p. 102
How to Check Print Quality	p. 102
The Led Printer	p. 113
LED Printers	p. 113
Components of the Printer	p. 113
The LED Printhead	p. 113
The LED Printing Process	p. 114
Printing	p. 114
Hopping	p. 115
Feeding	p. 115
Charging	p. 116
Exposing	p. 116
Generation of Carriers and Electrostatic Contact Image	p. 116
Developing	p. 117
Transfer to Paper	p. 118
Fusing	p. 118
The Cleaning Roller	p. 118
Fuser Unit	p. 118
Printer Control Board	p. 119
Main Motor (Drum Motor)	p. 119
Registration Motor	p. 119
DC Fan	p. 119
The Power Supply Unit	p. 119
Power Supply Board Components and Functions	p. 119
High-Voltage Circuits	p. 120
Sensors and Switches	p. 120
Printer Paper Jam Detection	p. 120
Printer Cover Open Switch	p. 120
Toner Low/No Toner Sensor	p. 120
Troubleshooting Tips	p. 121
Preliminary Checks	p. 121
Tips for Preventing Image Problems	p. 121
Printer Comm Error	p. 122
Printer Fixing Error	p. 122
Image Problems	p. 122
Maintenance	p. 125
General Information	p. 125
Tools	p. 125
Cleaning	p. 126
Lubrication	p. 126
Consumables	p. 127
Scanners in MFPs	p. 129
Shading Compensation and Image Enhancement	p. 129
CIS Scanner Image Processing and Interface Circuitry	p. 130
Image Sensor and Processing	p. 130
CIS Input Processor	p. 130
CIS Driver	p. 130
CCD Scanner Image Processing and Interface Circuitry	p. 130
Scanner Section	p. 130
Description of DRAM Control	p. 132
General Description of Memory Access	p. 133
DRAM Assignment and CPU Access	p. 133
Image Memory Area	p. 133
DMA from the Reading Section	p. 133
Color Image Scanners	p. 134
Transference of Pixel Signals onto a Video Line	p. 136
The Color Scanner of the Brother MFC 7000FC Machine	p. 137
The Samsung MyScan Software Program	p. 138
Scan Source	p. 138
Scan Mode	p. 139
Resolution	p. 139
Scaling Factor	p. 139
Filter	p. 140
Descreen	p. 140
Highlight, Shadow, and Gamma Adjustment	p. 140
Invert	p. 141
Flip/Rotate	p. 142
Preview Image Size	p. 142
The Shortcut Menu	p. 142
Frame Tool	p. 142
Zoom Tool	p. 142
Highlight and Shadow Tools	p. 143
Image Enhancement Tools	p. 143
Level Adjustment	p. 144
Tonal Map	p. 144
The Fax Function	p. 147
Fax Circuitry	p. 149
Circuit Operations	p. 149
Digital Board	p. 149
Analog Board	p. 149
Operation Board	p. 149
Image Data Flow during Facsimile Operation	p. 158
Copy (Fine, Super-Fine, Half Tone)	p. 158
Transmission	p. 158
Reception	p. 158
The Fax Engine	p. 159
The Fax Modem	p. 160
NCU PCB	p. 162
G3 Fax Binary Protocol	p. 163
File Transfer	p. 164
PC Fax	p. 165
SmartFAX	p. 165
Sending a Fax	p. 165
Receiving a Fax	p. 167
Using Phonebook	p. 167
Setting User Options	p. 168
Power Supplies	p. 171
Power Supply PCB of Brother MFC 7000FC and MFC 7200FC	p. 171
Power Supply PCB of Brother MFC 4350 and Related Models	p. 171
Low-Voltage Power Supply PCB	p. 171
High-Voltage Power Supply PCB	p. 172
Switching Power Supply Unit Section	p. 173
Input Circuit	p. 173
Rectifier Circuit	p. 173
Converter Circuit	p. 174
Control Circuit and Error-Detecting Circuit	p. 176
Over-Current Limiter	p. 176
DC-DC Converter	p. 176
Servicing the Power Supply Unit	p. 176
Key Components for Troubleshooting	p. 176
Troubleshooting Flow Chart	p. 177
Repair Details for Broken Parts	p. 177
Surge Protection	p. 178
Surge Suppression Devices	p. 179
Consumables	p. 183
Printer Cartridges	p. 183
Brother HL-700 Laser Printer Cartridge Series	p. 184
Charging Process	p. 184
Exposing Process	p. 184
Developing Process	p. 185
Transferring Process	p. 185
Erasing Process	p. 186
Inkjet Cartridge in Brother MFC 7000/MFC 7200 Machines	p. 186
Printhead	p. 187
Ink Cartridge	p. 187
Paper Types and Sizes	p. 187
Remanufacture of Printer Cartridges	p. 189
Remanufacture of Laser Cartridges	p. 189
Remanufacture of Inkjet Cartridges	p. 190
The Basics	p. 190
Canon BC-01, BC-02, and BC-03 Cartridges	p. 191
Canon BX-3 Cartridge	p. 192
Hewlett-Packard 51625A Cartridge	p. 193
Hewlett-Packard 51629A and 51649A Cartridges	p. 194
Inkjet Processing Equipment	p. 195
Automatic Refilling Equipment	p. 195
Inks for Inkjet Printer Cartridges	p. 195
Appendix	p. 197
Glossary	p. 199
References	p. 203
U.S. Patents	p. 203
Operator's and User's Manuals	p. 203
Service Manuals	p. 204
Publications	p. 204
Index	p. 205
Table of Contents provided by Syndetics. All Rights Reserved.

Multifunction Peripherals for PCs

Technology, Troubleshooting and Repair

At a Glance

Paperback

Industry Reviews

Shipping

How to return your order

Defective items

You Can Find This Book In

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