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Service

Manual

P h a s e r

™

L a s e r P r i n t e r

4400

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2
3
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Summary of Contents for Phaser 4 400

Page 1: ...Service Manual P h a s e r L a s e r P r i n t e r 4400 ...

Page 2: ... service personnel only To avoid personal injury do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so First Printing June 2002 071 0861 00 PHASER 4400 LASER PRINTER Service Manual p a i r m a n u a l c o m ...

Page 3: ...nts 2 1 Introduction 2 1 Service Diagnostics 2 7 Printer Error Messages 2 11 Image Processor POST Error Codes 2 58 Troubleshooting 3 1 Section Contents 3 1 Introduction 3 1 Measurements 3 1 Troubleshooting Procedures 3 2 Image Quality Checkout Procedures 3 41 Image Quality Troubleshooting Procedures 3 53 Tests Prints Adjustments and NVRAM Reset 4 1 Section Contents 4 1 Service Test Prints 4 1 Adju...

Page 4: ...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 Processo...

Page 5: ... Fan Control 8 28 Duplex Printing 8 29 Envelope Feeder 8 33 Stacker 8 37 Option Feeder Assembly 8 42 Wiring Data 9 1 Section Contents 9 1 Introduction 9 2 Base Engine Wiring Data 9 4 550 Sheet Feeder 9 22 Duplex Unit 9 26 Stacker 9 31 Envelope Feeder 9 37 s e r v i c e r e p a i r m a n u a l c o m ...

Page 6: ...r Overview 1 2 Configurations 1 2 Printer Memory Configuration 1 3 Monitoring Consumables 1 3 Repackaging Information 1 3 Parts of the Printer 1 4 Base Configuration Components 1 4 Internal Components 1 6 Printer Options 1 6 Front Panel Configuration 1 8 Image Processor Board 1 10 Machine Orientation 1 12 Menu Map 1 13 Printer Specifications 1 14 Physical Specifications 1 14 Media and Tray Specifi...

Page 7: ... Diagnostics tests to verify a specific printer assembly is operating correctly Refer to Service Diagnostics on page 2 7 To troubleshoot problems not associated with a front panel error message or code such as ac power or problems related to print quality refer to the section Troubleshooting on page 3 1 Section Contents Introduction 2 1 Service Flowchart 2 2 Service Technician Cautionary Statement...

Page 8: ...en corrected Measurements Power and signal grounds are connected to frame ground You can perform all circuit troubleshooting using the metal frame chassis as the grounding point If you need more information to locate connectors or test points refer to Wiring Data on page 9 1 Unless otherwise specified the following voltage tolerances are used within this section Section Contents Introduction 3 1 M...

Page 9: ...Menu when you select Print Test Prints The other is the Engine Test Print which is stored in the Engine Logic Board and is accessible through the Engine Test Print menu in Service Diagnostics Section Contents Service Test Prints 4 1 Test Print 4 2 Engine Test Print 4 4 Adjustments 4 5 Registration 4 5 Fuser Temperature 4 6 Resetting NVRAM 4 7 Customer Menu Resets 4 7 Service Diagnostics Resets 4 8...

Page 10: ...oner vacuum cleaner Clean water Clean dry lint free cloth Black light protective bag Cleaning Caution Never apply alcohol to any parts in the printer Note Never use a damp cloth to clean up toner 1 Record number of sheets printed 2 Print several sheets of paper to check for problems or defects 3 Turn off the printer and disconnect the Power Cord 4 Remove the Top Cover and clean the Fan with a brus...

Page 11: ...ve or install a part Locations such as left right front or rear given in the repairs assume you are facing the printer front panel The Print Cartridge should be removed and stored in a dark safe place when performing any procedure where screws or components may damage the cartridge and where exposure to light could degrade performance List of Procedures Covers and Trays 6 6 RRP 1 1 Left Interface ...

Page 12: ... and P2 is attached to a wire harness It indicates that connector jack 1 is attached to one end of the wire harness and connector jack 2 is attached to the other end that is plugged into plug 2 The following abbreviations are used in the parts lists text and illustrations P J Plug Jack P O Part of W With W O Without Parts List Index PL 1 1 Covers 1 of 2 7 2 PL 9 1 Frame and Size Sensor 7 22 PL 1 2...

Page 13: ...ission to the Turn Roller Assembly 8 16 Drive Transmission to the Feeder Assembly 8 17 Drive Transmission to the Rubber Registration Roller Assembly 8 18 Drive Transmission to the Drum and the Transfer Roller 8 19 Drive Transmission to the Fuser Assembly 8 20 Drive Transmission to the Exit Components 8 21 Engine Logic Board and Front Panel Functions 8 22 Image Processor Board 8 22 5 VDC PWB 8 22 P...

Page 14: ...eeder P J Table 9 22 550 Sheet Feeder P J Map 9 23 550 Sheet Feeder Block Diagram 1 of 2 9 24 550 Sheet Feeder Block Diagram 2 of 2 9 25 Duplex Unit 9 26 Duplex Unit P J Table 9 26 Duplex Unit P J Map 9 27 Duplex Unit Block Diagram 9 28 Stacker 9 31 Stacker P J Table 9 31 Stacker P J Map 9 32 Stacker Block Diagram 9 33 Envelope Feeder 9 37 Envelope Feeder P J Table 9 37 Envelope Feeder P J Map 9 3...

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