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P h a s e r 840/850/860 Color Printer
®
Service
®
With Phaser 8200 Color Printer Addendum
Manual
PHASER® 840/850/860 NETWORK COLOR PRINTER Service Manual with the Phaser 8200 Color Printer Addendum
Warning The following servicing instructions are for use by qualified 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. This printing: April 2002 071-0723-00
Copyright © 2002, Xerox Corporation. All Rights Reserved. Unpublished rights reserved under the copyright laws of the United States. Contents of this publication may not be reproduced in any form without permission of Xerox Corporation. Copyright protection claimed includes all forms of matters of copyrightable materials and information now allowed by statutory or judicial law or hereinafter granted, including without limitation, material generated from the software programs which are displayed on the screen such as styles, templates, icons, screen displays, looks, etc. XEROX®, The Document Company®, the stylized X®, CentreWare®, ColorStix®, DocuPrint®, Made For Each Other®, Phaser®, PhaserShare®, and the TekColor® icon are registered trademarks of Xerox Corporation. infoSMARTTM, PhaserLinkTM, PhaserPortTM, PhaserPrintTM, PhaserSMARTTM, PhaserSymTM, PhaserToolsTM, and the TekColorTM name are trademarks of Xerox Corporation. Total Satisfaction ServicesSM (formerly TekColor CareSM and RealSuppportSM) is a service mark of Xerox Corporation. Adobe®, Acrobat® Reader®, and PostScript® are registered trademarks of Adobe Systems Incorporated. Apple®, LaserWriter®, LocalTalk®, Macintosh®, Mac® OS, and AppleTalk®are registered trademarks of Apple Computer Incorporated. PCL® and HP-GL® are registered trademarks of Hewlett-Packard Corporation. MS-DOS® and Windows® are registered trademarks of Microsoft Corporation. Novell® and NetWare® are registered trademarks of Novell, Incorporated. Sun® and Sun Microsystems® are registered trademarks of Sun Microsystems, Incorporated. SPARC® is a registered trademark of SPARC International, Incorporated. SPARCstationTM is a trademark of SPARC International, Incorporated, licensed exclusively to Sun Microsystems, Incorporated. UNIX® is a registered trademark in the US and other countries, licensed exclusively through X/Open Company Limited. This product includes an implementation of LZW licensed under U.S. Patent 4,558,302. Other marks are trademarks or registered trademarks of the companies with which they are associated. PANTONE® Colors generated by the Phaser 840 / 850 / 860 / 8200 Color Printers are four- and/or three-color process simulations and may not match PANTONE-identified solid color standards. Use current PANTONE Color Reference Manuals for accurate colors. PANTONE Color simulations are only obtainable on this product when driven by qualified Pantone-licensed software packages. Contact Pantone, Inc. for a current list of qualified licensees.
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User safety summary
Terms in manual
CAUTION WARNING Conditions that can result in damage to the product. Conditions that can result in personal injury or loss of life.
Power source: For 110 VAC printers, do not apply more than 130 volts RMS between the supply conductors or between either supply conductor and ground. Use only the specified power cord and connector. For 220 VAC printers, do not apply more than 250 volts RMS between the supply conductors or between either supply conductor and ground. Use only the specified power cord and connector. Refer to a qualified service technician for changes to the cord or connector. Operation of product: Avoid electric shock by contacting a qualified service technician to replace fuses inside the product. Do not operate without the covers and panels properly installed. Do not operate in an atmosphere of explosive gases.
WARNING Turning the power off using the On/Off switch does not de-energize the printer. You must remove the power cord to disconnect the printer from the mains. Keep the power cord accessible for removal in case of an emergency.
Safety instructions: Read all installation instructions carefully before you plug the product into a power source. Terms on product
CAUTION A personal injury hazard exists that may not be apparent. For example, a panel may cover the hazardous area. Also applies to a hazard to property including the product itself. A personal injury hazard exists in the area where you see the sign.
DANGER
Care of product: Disconnect the power plug by pulling the plug, not the cord. Disconnect the power plug if the power cord or plug is frayed or otherwise damaged, if you spill anything into the case, if product is exposed to any excess moisture, if product is dropped or damaged, if you suspect that the product needs servicing or repair, and whenever you clean the product. Ground the product: Plug the three-wire power cord (with grounding prong) into grounded AC outlets only. If necessary, contact a licensed electrician to install a properly grounded outlet.
Symbols as marked on product:
DANGER high voltage:
Protective ground (earth) terminal:
Use caution. Refer to the manual(s) for information:
WARNING: If the product loses the ground connection, usage of knobs and controls (and other conductive parts) can cause an electrical shock. Electrical product may be hazardous if misused.
Service safety summary
For qualified service personnel only: Refer also to the preceding Users Safety Summary. Do not service alone: Do not perform internal service or adjustment of this product unless another person capable of rendering first aid or resuscitation is present. Use care when servicing with power on: Dangerous voltages may exist at several points in this product. To avoid personal injury, do not touch exposed connections and components while power is on.
Disconnect power before removing the power supply shield, soldering, or replacing components.
Do not wear jewelry: Remove jewelry prior to servicing. Rings, necklaces, and other metallic objects could come into contact with dangerous voltages and currents. Power source: This product is intended to operate from a power source that will not apply more than 250 volts rms between the supply conductors or between either supply conductor and ground. A protective ground connection by way of the grounding conductor in the power cord is essential for safe operation.
Contents
User safety summary ......................................................................................... iii Service safety summary ..................................................................................... iv List of Tables .................................................................................................... vii List of Figures.................................................................................................... ix
General Information
1-1
Phaser 840 Printer Overview ..........................................................................1 - 2 Phaser 850 Printer Overview ..........................................................................1 - 4 Phaser 860 Printer Overview ..........................................................................1 - 5 Solid inks ................................................................................................................1 - 6 Phaser 840/850 RAM and Printer Capabilities.......................................................1 - 7 Memory Considerations Phaser 840/850........................................................1 - 8 Phaser 860 RAM and Printer Capabilities....................................................1 - 10 Memory Considerations Phaser 860.............................................................1 - 11 Print Engine Assemblies 840/850/860..................................................................1 - 12 Circuit Boards...............................................................................................1 - 13 The printer's I2C bus ....................................................................................1 - 15 Printhead Maintenance System.....................................................................1 - 16 Sensor Maps..................................................................................................1 - 17 Combination sensors and their meanings .....................................................1 - 20 Media tray type sensing ................................................................................1 - 20 The Main Board....................................................................................................1 - 21 Front Panel - Phaser 840/850 Printers ..................................................................1 - 23 Front Panel - Phaser 860.......................................................................................1 - 24 Rear Panel Connections ........................................................................................1 - 25 Rear Panel Status LEDs................................................................................1 - 28 DIP Switches ................................................................................................1 - 28 Phaser 840, 850 and 860 Printer Differences .......................................................1 - 29 Specifications........................................................................................................1 - 31 Regulatory Specifications.............................................................................1 - 35
Error Codes and Messages
2 - 37
Phaser 840/850 Rear Panel PS and PE LED Codes .............................................2 - 37 Phaser 860 Power-Up Error Messages and LED Codes.......................................2 - 40 The BIST (Built-In Self Test).......................................................................2 - 40 POST (Power On Self Test) .........................................................................2 - 41 Fault Codes ...........................................................................................................2 - 44
Contents
i
Troubleshooting
3 - 73
Network Event Logs ............................................................................................ 3 - 75 Electronics Troubleshooting ................................................................................ 3 - 76 System power-up sequence.......................................................................... 3 - 76 Inoperative printer problems........................................................................ 3 - 80 Main Board CPU operation ......................................................................... 3 - 80 Verifying print engine operation by printing a built in page. ...................... 3 - 81 Verifying power supply operation ............................................................... 3 - 81 Measuring power supply voltages ............................................................... 3 - 81 Inspecting the power supply fuses ............................................................... 3 - 82 Testing for shorted drivers ........................................................................... 3 - 83 Testing for a shorted motor.......................................................................... 3 - 84 Testing motor and solenoid resistances ....................................................... 3 - 84 Paper Path and Media-based Problems................................................................ 3 - 85 Media-based problems ................................................................................. 3 - 85 Paper-pick errors.......................................................................................... 3 - 85 Print transfer jams ........................................................................................ 3 - 86 Checking the process motor and drive train ................................................ 3 - 86 Media skews passing through the paper path .............................................. 3 - 87 Print Image Quality Problems.............................................................................. 3 - 88 Not printing.................................................................................................. 3 - 88 Missing ink or light colored ink band running length of print..................... 3 - 89 Color is uneven ............................................................................................ 3 - 90 Streaks or lines down the print .................................................................... 3 - 91 Scratches parallel to the long axis of printing, particularly with film ......... 3 - 92 Printing too light or too dark........................................................................ 3 - 93 White portion of print is colored.................................................................. 3 - 94 Fuzzy Text ................................................................................................... 3 - 95 Poor primary color fills................................................................................ 3 - 96 Ghosting....................................................................................................... 3 - 97 Poor small text resolution ............................................................................ 3 - 98 Vertical line appear wavy ............................................................................ 3 - 99 Oil streaks on print..................................................................................... 3 - 100 Incomplete image transfer to paper ........................................................... 3 - 101 Ink smears on first side of duplex print ..................................................... 3 - 102 Repeating print defects on print................................................................. 3 - 103 Wrinkling ................................................................................................... 3 - 104 Image is offset or cut off............................................................................ 3 - 105 Oil streaks on top of print .......................................................................... 3 - 105 Poor ink adhesion, poor image durability.................................................. 3 - 105 Evaluating the printhead and cap/wipe/purge system........................................ 3 - 106 Troubleshooting following cap/wipe/purge installation ............................ 3 - 112 Macintosh printing problems ............................................................................. 3 - 115 Image never prints ..................................................................................... 3 - 115 Image is rotated 90 degrees ....................................................................... 3 - 115 Image prints in black-and-white ................................................................ 3 - 115 Printer isn't in the Chooser ........................................................................ 3 - 116 Windows printing problems............................................................................... 3 - 117
ii
Phaser 840/850/860/8200 Color Printer - Service Manual
Diagnostics, Adjustments and NVRAM
4 - 119
Front Panel Shortcuts..........................................................................................4 - 119 Hidden Service Menu .................................................................................4 - 121 Built-in Diagnostics (Phaser 860 Only)..............................................................4 - 122 Check Menu Value Keys and Descriptions (Phaser 860 only)...........................4 - 126 Check Value Menu Parameters ..................................................................4 - 135 Adjustments ........................................................................................................4 - 136 Printing service test prints ..........................................................................4 - 136 Printing the Configuration Page .................................................................4 - 136 Selecting Duplex (2-sided) Oil Chase ........................................................4 - 137 Selecting Envelope Oil Chase ....................................................................4 - 137 Center Image...............................................................................................4 - 137 Locking the printhead .................................................................................4 - 138 Process belt tension adjustment ..................................................................4 - 139 Exit roller drive belt tension adjustment.....................................................4 - 140 Y-axis belt tension adjustment (Phaser 840 printer)...................................4 - 142 Y-axis belts tension adjustment (Phaser 850/860 printer)..........................4 - 144 Printhead-to-drum spacing adjustment (Phaser 840 Printer Only).............4 - 146 X-axis scale adjustment ..............................................................................4 - 149 Cap/wipe/purge assembly belt adjustments................................................4 - 150 Drum position encoder gap.........................................................................4 - 152 Transfix roller pressure spring adjustment .................................................4 - 154 Vacuum check (Phaser 840/850 Only) ...............................................................4 - 155 Resetting NVRAM .............................................................................................4 - 156
Test Prints
5 - 159
1: X-axis motion .........................................................................................5 - 160 2: Weak/missing jet ....................................................................................5 - 161 3: Color Bands, RGBK Dither....................................................................5 - 161 4: Reverse Text ...........................................................................................5 - 162 5: Big Bands Hand-fed OHP ......................................................................5 - 162 6: 66% Gray, dot size uniformity ...............................................................5 - 163 7: Manuf. Dot position (scanner)................................................................5 - 164 8: YMCKRGB Solid Fills ..........................................................................5 - 164 9: Drum Seal ..............................................................................................5 - 165 10: Manuf. paper path.................................................................................5 - 165 11: Head-to-Drum Gap ...............................................................................5 - 166 12.: Manuf x-axis (scanner)........................................................................5 - 166 13: Black Solid Fill.....................................................................................5 - 167 14: Red Solid Fill........................................................................................5 - 167 15: Green Solid Fill ....................................................................................5 - 168 16: Blue Solid Fill.......................................................................................5 - 168 17: Cyan Solid Fill......................................................................................5 - 169 18: Magenta Solid Fill ................................................................................5 - 169 19: Yellow Solid Fill ..................................................................................5 - 170 20: OHP Color Bands .................................................................................5 - 170 21: Primary Solid Fills 10x.........................................................................5 - 171
Contents
iii
22: Manuf. Skew Margins ......................................................................... 5 - 171 23: Manuf. Banding ................................................................................... 5 - 171
Cleaning and Maintenance
6 - 173
Cleaning ............................................................................................................. 6 - 174 Pick Roller Cleaning Method .................................................................... 6 - 175 Cleaning Page (Phaser 840 printer only) ................................................... 6 - 175 Vacuum ...................................................................................................... 6 - 175 Drum temperature sensor........................................................................... 6 - 175 Maintenance....................................................................................................... 6 - 176 Maintenance roller ..................................................................................... 6 - 176 Waste tray .................................................................................................. 6 - 176 Lubrication......................................................................................................... 6 - 177 Inspection........................................................................................................... 6 - 178
Key FRU Removal and Replacement
7 - 179
Main board and its components ................................................................. 7 - 180 Power supply.............................................................................................. 7 - 183 Power control board.................................................................................. 7 - 184 Upper feed roller assembly ........................................................................ 7 - 185 Paper/drum heater ...................................................................................... 7 - 187 Drum/transfix assembly............................................................................. 7 - 188 Drum position sensor assembly (Phaser 840 printer) ................................ 7 - 192 Drum position sensor assembly (Phaser 850/860)..................................... 7 - 194 Printhead .................................................................................................... 7 - 196 X-axis motor and drive assembly .............................................................. 7 - 199 Y-axis belt drive assembly (Phaser 840 printer)........................................ 7 - 200 Y-axis belt drive assembly (Phaser 850/860 printer)................................. 7 - 201 Cap/wipe/purge assembly (Phaser 840 printer) ......................................... 7 - 202 Cap/wipe/purge assembly (Phaser 850/860 printer).................................. 7 - 204
FRU Parts List
8 - 207
Cabinet FRU's ........................................................................................... 8 - 208 Imaging FRU's .......................................................................................... 8 - 210 Paper Path FRU's....................................................................................... 8 - 212 Motor and Fan FRUs ................................................................................. 8 - 214 Circuit Board FRUs ................................................................................... 8 - 216 Solenoid and Clutch FRUs ........................................................................ 8 - 218 Gear and Belt FRUs ................................................................................... 8 - 220 Sensor and Flag FRUs ............................................................................... 8 - 222 High-capacity Paper Tray Assembly ......................................................... 8 - 224 Service tools....................................................................................................... 8 - 226 Supplies and accessories .................................................................................... 8 - 227
iv
Phaser 840/850/860/8200 Color Printer - Service Manual
Wiring Diagrams Phaser 8200 Color Printer Addendum
9 - 235 PA - 241
Phaser 8200 Printer Configurations........................................................ PA - 241 Hardware Updates .................................................................................. PA - 241 Internal Pages and Menu Items............................................................... PA - 241 Inks ......................................................................................................... PA - 242 Memory................................................................................................... PA - 242
Appendix
A - 243
On-site Printhead Troubleshooting Checklist Phaser 340/350/360/380/840/850 ..............................................................A - 244 On-site Electronics Troubleshooting Checklist Phaser 840/850 ...............A - 250 Z840/z850 Electronics Troubleshooting Guide.........................................A - 253 On-site Printhead Troubleshooting Checklist Phaser 860/8200.........................................................................................A - 261 On-site Electronics Troubleshooting Checklist Phaser 860 ......................A - 266
Contents
v
vi
Phaser 840/850/860/8200 Color Printer - Service Manual
List of Tables
Installed RAM and printer capabilities - - - - - - - - - Acceptible SDRAM DIMMs - - - - - - - - - - - - - - Acceptible SODIMMs - - - - - - - - - - - - - - - - - Installed RAM and printer capabilities - - - - - - - - - Tray switch sensor combinations - - - - - - - - - - - - Rear panel DIP switch settings - - - - - - - - - - - - - Summary of differences between Phaser 840/850/860 - - Physical dimensions - - - - - - - - - - - - - - - - - - Printer installation clearances - - - - - - - - - - - - - Functional specifications - - - - - - - - - - - - - - - - Electrical specifications - - - - - - - - - - - - - - - - Environmental specifications - - - - - - - - - - - - - - Main board power-up self-test error codes - - - - - - - BIST Rear Panel LED Codes - - - - - - - - - - - - - POST (Power On Self Test) Error Messages - - - - - - Front Panel & Fault History Log Error Codes and Messages 22,LSS.TC Error Codes: Media Jams - - - - - - - - - - 22,000 Fault Codes and Actions - - - - - - - - - - - - Front Panel & Fault History Log Error Codes and Messages Electrical Interface RAP Table - - - - - - - - - - - - - Media and Paper Path RAP Table - - - - - - - - - - - Print and Image Quality Problems RAP Table - - - - - Macintosh Printing Problems RAP Table - - - - - - - - Motor and solenoid resistances - - - - - - - - - - - - - Not Printing - - - - - - - - - - - - - - - - - - - - - - Missing or light colored ink band - - - - - - - - - - - Color is uneven - - - - - - - - - - - - - - - - - - - - Streaks or lines down the print - - - - - - - - - - - - - Scratches parallel to the long axis of printing - - - - - - Printing too light or too dark - - - - - - - - - - - - - - White portion of print is colored - - - - - - - - - - - - Fuzzy Text - - - - - - - - - - - - - - - - - - - - - - Poor primary color fills - - - - - - - - - - - - - - - - Ghosting - - - - - - - - - - - - - - - - - - - - - - - Poor small text resolution - - - - - - - - - - - - - - - Vertical line appears wavy - - - - - - - - - - - - - - - Oil streaks on print - - - - - - - - - - - - - - - - - - Incomplete image transfer to paper - - - - - - - - - - - Ink smears on first side of duplex printt - - - - - - - - - Repeating print defects on the print - - - - - - - - - - - Wrinkling - - - - - - - - - - - - - - - - - - - - - - - Front Panel Shortcuts - - - - - - - - - - - - - - - - - - - 1-8 - - 1-9 - 1-10 - 1-11 - 1-20 - 1-28 - 1-29 - 1-31 - 1-31 - 1-32 - 1-33 - 1-34 - 2-37 - 2-40 - 2-41 - 2-45 - 2-59 - 2-60 - 2-71 - 3-73 - 3-73 - 3-74 - 3-74 - 3-84 - 3-88 - 3-89 - 3-90 - 3-91 - 3-92 - 3-93 - 3-94 - 3-95 - 3-96 - 3-97 - 3-98 - 3-99 - 3-100 - 3-101 - 3-102 - 3-103 - 3-104 - 4-119
List of Tables
vii
Hidden Service Menu - - - - Diagnostic Menu Map - - - - Check Menu Value Key - - - Test Print Menu - - - - - - - Maintenance Kit Life - - - - Cabinet FRUs - - - - - - - - Imaging FRUs - - - - - - - - Paper path FRUs - - - - - - - Motor and fan FRUs - - - - - Circuit board FRUs - - - - - Solenoid and clutch FRUs - - Gear and belt FRUs - - - - - Sensor and flag FRUs - - - - High-capacity Paper Tray FRUs Service tools - - - - - - - - - Supplies and accessories - - - -
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4-121 4-123 4-127 5-159 6-176 8-209 8-210 8-213 8-215 8-216 8-219 8-221 8-223 8-225 8-226 8-227
viii
Phaser 840/850/860/8200 Color Printer - Service Manual
List of Figures
The Phaser 840/850 printer shown with optional High-Capacity Paper Tray Assembly. The Phaser 860 printer shown with the optional High-Capacity Paper Tray Assembly. Internal features of the print engine - - - - - - - - - - - - - - - - - - - - - - - - Circuit boards of the print engine (right front view of the Phaser 850)- - - - - - - - Circuit boards of the print engine (left rear view Phaser 850) - - - - - - - - - - - - Circuit Boards of the print engine (right rear view Phaser 860) - - - - - - - - - - - The printer's I2C bus - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Printhead maintenance system of the print engine - - - - - - - - - - - - - - - - - Sensors and switches on the right side of the print engine - - - - - - - - - - - - - Switches and Sensors on the left side of the print engine - - - - - - - - - - - - - - Solenoids and clutches on the print engine - - - - - - - - - - - - - - - - - - - - Features of the Phaser 840 printer main board - - - - - - - - - - - - - - - - - - - Features of the Phaser 860 Main Board - - - - - - - - - - - - - - - - - - - - - - Features of the Phaser 850 printer main board - - - - - - - - - - - - - - - - - - - Printer front panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Front Panel - Phaser 860 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Phaser 840 printer rear panel - - - - - - - - - - - - - - - - - - - - - - - - - - - Phaser 850 printer rear panel - - - - - - - - - - - - - - - - - - - - - - - - - - - Phaser 860 printer rear panel - - - - - - - - - - - - - - - - - - - - - - - - - - - Attaching the service load connector to J250 - - - - - - - - - - - - - - - - - - - Faceplate showing blade wipe with no drops, smudges or streaks - - - - - - - - - - Faceplate showing streaks and smudges from a poor wipe - - - - - - - - - - - - - Connecting the vacuum gauge to the printer - - - - - - - - - - - - - - - - - - - - Maintenance tray showing good purge - - - - - - - - - - - - - - - - - - - - - - Damaged printhead data cable - - - - - - - - - - - - - - - - - - - - - - - - - - Inadvertently disconnected thermistor cable connector - - - - - - - - - - - - - - - Setting process belt tension - - - - - - - - - - - - - - - - - - - - - - - - - - - Setting exit roller drive belt tension - - - - - - - - - - - - - - - - - - - - - - - - Pull the lever arm and press the tool firmly against the printer frame to set tension. - Setting the Y-axis belt tension Phaser 850/860- - - - - - - - - - - - - - - - - - - Attaching clips. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Adjusting the tension spring - - - - - - - - - - - - - - - - - - - - - - - - - - - Drum adjustment - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Adjusting the x-axis scale adjustment - - - - - - - - - - - - - - - - - - - - - - - Aligning (timing) the cap/wipe/purge assembly drive belts - - - - - - - - - - - - - Setting the drum position encoder gap- - - - - - - - - - - - - - - - - - - - - - - Adjusting the transfix roller pressure springs - - - - - - - - - - - - - - - - - - - Connecting the vacuum gauge to the printer - - - - - - - - - - - - - - - - - - - - Resetting print engine NVRAM menu item - - - - - - - - - - - - - - - - - - - - Clearing PostScript NVRAM menu item - - - - - - - - - - - - - - - - - - - - - Lubricating the transfix cam - - - - - - - - - - - - - - - - - - - - - - - - - - - Removing the Phaser 840 printer main board - - - - - - - - - - - - - - - - - - - - - 1-1 - - 1-1 - 1-12 - 1-13 - 1-14 - 1-14 - 1-15 - 1-16 - 1-17 - 1-18 - 1-19 - 1-21 - 1-22 - 1-22 - 1-23 - 1-24 - 1-25 - 1-26 - 1-27 - 3-83 - 3-107 - 3-107 - 3-108 - 3-111 - 3-113 - 3-114 - 4-139 - 4-141 - 4-143 - 4-145 - 4-146 - 4-147 - 4-148 - 4-149 - 4-151 - 4-153 - 4-154 - 4-155 - 4-157 - 4-157 - 6-177 - 7-180
List of Figures
ix
Removing the Phaser 850 printer main board - - - - - - - - - Removing the Main Board (Phaser 860) - - - - - - - - - - - - Removing the power supply- - - - - - - - - - - - - - - - - - Removing the power control board - - - - - - - - - - - - - - Remove the upper feed roller assembly (left side) - - - - - - - Removing the upper feed roller assembly (front) - - - - - - - - Removing the paper/drum heater - - - - - - - - - - - - - - - Removing the drum transfix assembly (left side) - - - - - - - - Removing the drum/transfix assembly (right side) - - - - - - - Marking the drum home flag sensor alignment - - - - - - - - - Removing the drum position sensor assembly (Phaser 840 printer) Marking the shaft for drum home alignment - - - - - - - - - - Removing the drum position sensor assembly (Phaser 850 printer) Plugging the reservoir holes- - - - - - - - - - - - - - - - - - Removing the printhead - - - - - - - - - - - - - - - - - - - Removing the x-axis motor and drive assembly - - - - - - - - Removing the Y-axis belt drive assembly (Phaser 840 printer) - Removing the Y-axis belt drive assembly (Phaser 850/860 printer) Removing the cap/wipe/purge assembly (Phaser 840 printer) - - Removing the lower cap/wipe/purge retainer clip- - - - - - - - Removing the lower cap/wipe/purge retainer clip- - - - - - - - Removing the cap/wipe/purge assembly (Phaser 850/860 printer) Cabinet FRUs - - - - - - - - - - - - - - - - - - - - - - - - Imaging FRUs - - - - - - - - - - - - - - - - - - - - - - - - Paper path FRUs - - - - - - - - - - - - - - - - - - - - - - - Motor and fan FRUs - - - - - - - - - - - - - - - - - - - - - Circuit Board FRUs - - - - - - - - - - - - - - - - - - - - - Solenoid and Clutch FRUs - - - - - - - - - - - - - - - - - - Gear and belt FRUs- - - - - - - - - - - - - - - - - - - - - - Sensor and flag FRUs- - - - - - - - - - - - - - - - - - - - - High-capacity Paper Tray - - - - - - - - - - - - - - - - - - - New ink sticks - - - - - - - - - - - - - - - - - - - - - - - - -
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- 7-181 - 7-182 - 7-183 - 7-184 - 7-185 - 7-186 - 7-187 - 7-189 - 7-190 - 7-192 - 7-193 - 7-194 - 7-195 - 7-196 - 7-197 - 7-199 - 7-200 - 7-201 - 7-203 - 7-204 - 7-205 - 7-206 - 8-208 - 8-210 - 8-212 - 8-214 - 8-216 - 8-218 - 8-220 - 8-222 - 8-224 PA-242
x
Phaser 840/850/860/8200 Color Printer - Service Manual
General Information
This service guide contains information used to verify operation, troubleshoot, repair, adjust, and maintain the Xerox Phaser® 840, Phaser® 850 and Phaser® 860 Color Printers. This guide includes a Field Replacement Unit Parts list. Topics such as printer theory of operation, detailed removal/replacement procedures, configuration page details, and verifying printer operation are located on the companion Color Printer Service & Support Resources CD-ROM. To ensure complete understanding of the product, we recommend participation in Phaser 840/850/860 printer service training.
0388-01
Fig 1-1 The Phaser 840/850 printer shown with optional High-Capacity Paper Tray Assembly.
P860-001
Fig 1-2 The Phaser 860 printer shown with the optional High-Capacity Paper Tray Assembly.
General Inormation
1-1
Phaser 840 Printer Overview
The Phaser 840 Color Printer is an Adobe PostScript® Level 3 (Version 3010) color, solid-ink printer. It also supports color PCL 5c at 600 x 600 dots-per-inch resolution. The Phaser 840 printer prints at a number of resolutions: A 10 page-per-minute (ppm) Fast Color Mode, a standard 5.7 ppm mode, an Enhanced mode of 491 x 982 dpi at 3.3 ppm and a High-Resolution/Photo mode of 600 x 1200 dpi at 2.2 ppm. All printer models but the standard version feature built-in automatic two-sided printing.
Standard Phaser 840N. The Standard Phaser 840 printer features 136 built-in fonts, and is equipped with 32 Mbytes of RAM. It can be upgraded to as much as 128 Mbytes of RAM using any combination of two 32-, and 64-Mbyte RAM DIMMs. The Phaser 840DP. The Phaser 840 DP printer option upgrades the base printer to 64 Mbytes of RAM. It includes a SCSI port daughter card to support an external SCSI disk for additional font storage as well as a scanner. Special circuitry on the SCSI port daughter card enables additional features like duplex printing, job pipelining and First page Preview mode. With job pipelining, the printer can print one image and process the data for the next image at the same time. First Page Preview mode prints the first page of a multiple page print job while holding the remainder of the job pending front panel approval. The Phaser 840DX. The extended features option has all the features of the Phaser 840 Plus printer but includes additional RAM to bring the printer to 128 Mbytes of RAM. It also includes a High-capacity Paper Tray and an internal IDE hard drive. The Phaser 840GP. This Designer Edition printer includes all the features of the Phaser 840DP but includes 128 Mbytes of RAM, a 10/100BaseT network card, and translucent blue cabinet panels. The Phaser 840DPF. This freecolorprinters.com program printer is a Phaser 840DP printer but it also includes a High-Capacity paper Tray and 3 years of onsite service.
All printers support four available paper trays: Two A and A4 trays are intended for paper and low volumes of transparencies; two other A and A4 trays are meant for label stock and high-volume transparencies. The optional 500-sheet High-capacity Paper Tray Assembly gives the printer a two-tray capability. With the addition of a second High-capacity Paper Tray, the printer has a three-tray capability. (The High-capacity Paper Tray Assembly is sometimes referred to as a lower feeder; it only supports paper printing.) The printer can also print six sizes of handfed envelopes.
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Phaser 840/850/860/8200 Color Printer - Service Manual
A 133-MHz PowerPC processor oversees print engine operations and PostScript image processing. The printer features an integral bi-directional parallel port (IEEE 1284C with ECP mode) and a 10BaseT Ethernet port (with support for EtherTalk, Novell NetWare/NDS, TCP/IP, DHCP and Windows Peer-to-Peer). A USB high-speed serial port is also provided. A rear panel slot allows customers to install one "smart card" PhaserShare Series B Network Card. One card provides a LocalTalk port. A second, alternative card offers a 10/100BaseT/10Base2 Ethernet board providing standard protocol support for EtherTalk, Novell NetWare/NDS, TCP/IP and DHCP. When installed, this card disables the standard 10baseT port. A third card provides a Token Ring board providing protocol support for TokenTalk, Novell NetWare/NDS and TCP/IP. When inserted, this card also disables the standard 10baseT port. A second rear panel slot accommodates an internal IDE hard drive for print job collation, job accounting, and font storage. The printer features Job Accounting, which maintains from 50 to 5000 records of processed print jobs, depending on memory options and hard drive options. The record contains information such as time and duration of the print and the percentage of color coverage on the print. The log of records can be retrieved using PhaserLink, PhaserShare or CentreWare IS software.
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Phaser 850 Printer Overview
The Phaser 850 Color Printer is an Adobe PostScript Level 3 (Version 3010) color, solid-ink printer. It also supports color PCL 5c at 600 x 600 dots-per-inch resolution. The Phaser 850 printer prints at a number of resolutions: A 13.9 page-per-minute (ppm) Fast Color Mode, a standard 7.9 ppm mode, an Enhanced mode of 450 x 818 dpi (with dot-size switching) at 4 ppm and a High-Resolution/Photo mode of 600 x 1200 dpi at 2.2 ppm. The printer also includes a 6.3 ppm Fast Transparency Mode and a 3.4 ppm Standard Transparency Mode.
Standard Phaser 850N. The Standard Phaser 850 printer features 136 built-in fonts, and is equipped with 32 Mbytes of RAM. It can be upgraded to configurations of 64, 128, 192, and 256 Mbytes of RAM using combinations of two 32-, and 64-, and 128-Mbyte RAM DIMMs. The Phaser 850DP. The Phaser 850DP printer option upgrades the printer to 64 Mbytes of RAM and includes additional features like 2-sided printing, job pipelining and First Page Preview mode. The Phaser 850DPF. This is a freecolorprinters.com program printer which includes a High-Capacity paper tray and 3 years of on-site service. The Phaser 850DX. The extended features DX option has all the features of the Phaser 850DP printer, but includes additional RAM to bring the printer to 128 Mbytes of RAM. It also includes a High-Capacity Paper Tray and an internal IDE hard drive.
Like the Phaser 840 printer, all printers support four available paper trays. They also support the optional 500-sheet High-Capacity Paper Tray Assembly. The printer can also print seven sizes of hand-fed envelopes. A 200-MHz PowerPC processor oversees print engine operations and PostScript image processing. The printer features a 10/100BaseT Ethernet port (with support for EtherTalk, Novell NetWare/NDS, TCP/IP, DHCP and Windows Peer-to-Peer). A USB high-speed serial port is also provided. A rear panel slot allows customers to install a Token Ring card supporting TokenTalk, Novell NetWare/NDS and TCP/IP. When inserted, this card also disables the standard 10/100BaseT port. LocalTalk and 10Base2 are not supported by the Phaser 850 printer. A second rear panel slot accommodates an internal IDE hard drive for print job collation, job accounting, font storage and PDF direct printing. An integral bi-directional parallel port (IEEE 1284C with ECP mode) supports printing and also allows connecting a parallel interface scanner for optical copying support. Like the Phaser 840 printer, the Phaser 850 printer supports Job Accounting.
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Phaser 840/850/860/8200 Color Printer - Service Manual
Phaser 860 Printer Overview
The Phaser 860 Color Printer is an Adobe PostScript Level 3 (Version 3010) color, solid-ink printer. It also supports color PCL 5c at 600 x 600 dots-per-inch resolution. The printer can print at the following resolutions:
I I I I
Fast Color mode, 16 page-per-minute (ppm) Standard mode, 10 ppm mode at 355 x 464 dpi Enhanced mode, 6 ppm at 464 x 928 dpi High-Resolution/Photo mode, 3.5 ppm at of 600 x 1200 dpi.
The printer also includes a 7 ppm Fast Transparency mode and a 4 ppm Standard Transparency Mode (double-pass). Both modes are at 355 x 464 dpi.
The Phaser 860B. The Phaser 860B printer features 136 built-in fonts, and is equipped with 64 Mbytes of RAM. The Phaser 860B can be upgraded to configurations of 64, 128, 192 and 256 Mbytes of RAM using combinations of 64- and 128 Mbytes RAM SODIMMs. The Phaser 860B does not support networking or High-resolution/Photo mode. The Phaser 860N. The Phaser 860N printer adds a 10/100 BaseT Ethernet port and has all the same features as the Phaser 860B model. The Phaser 860DP. The Phaser 860DP printer option upgrades the printer to 128 Mbytes of RAM and includes additional features like 2-sided printing, job pipelining and High Resolution Photo mode. The Phaser 860DPF. This is a freecolorprinters.com program printer. The Phaser 860DPF has all the features of the Phaser 860DP printer, but adds a High-capacity paper tray and 3 years of on-site service. The Phaser 860DX. The extended features DX option has all the features of the Phaser 860DP printer, but includes a High-capacity Paper Tray and an internal IDE hard drive.
All printers support five available paper trays: Two A and A4 trays are meant for paper and low volumes of transparencies; two other A and A4 trays are meant for label stock and high-volume transparencies; and a legal size paper tray which comes with an output bail. There is an optional 500-sheet High-capacity Paper Tray Assembly gives the printer a two-tray capability. With the addition of a second High-Capacity Paper Tray, the printer has a three-tray capability. (The High-Capacity Paper Tray Assembly is sometimes referred to as a lower feeder; it only supports paper printing.) The printer can also print six sizes of hand-fed envelopes. A 250-MHz PowerPC processor oversees print engine operations and PostScript image processing. All configurations, except the Phaser 860B feature a 10/100BaseT Ethernet port (with support for EtherTalk, Novell NetWare/NDS, TCP/IP, DHCP and Windows Peer-to-Peer). A USB high-speed serial port is also provided. LocalTalk, Tolken Ring and 10Base2 are not supported by the Phaser 860 printer. An internal IDE hard drive can be installed on the main board for font storage and job accounting, if the printer has DP features the hard drive will support collation, proof print, saved print and secure print. An integral bi-directional parallel port (IEEE 1284C with ECP mode) supports printing and also allows connecting a parallel interface scanner for optical copying support.
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The printer supports Job Accounting which maintains from 50 to 5000 records of processed print jobs, depending on memory and hard drive options. The record contains information such as time duration of the print and the percentage of color coverage on the print. The log of reconds can be retrieved using CentreWare software.
Proof Print Jobs. A proof job is a specific case of a multiple-copy job. With a proof job, the customer assigns a password and copy account at the client workstation before printing. The first set of prints are printed immediately. The original number of requested sets are printed after the customer enters the matching password on the printer's control panel. The customer has the option of printing the original number of requested sets or deleting the job. Using the same password will cause any previous job(s) to be deleted. A proof job that has not been printed is retained on hard disk through power cycles. Proof jobs sent to a printer without the hard disk option are not printed and are discarded. Secure Print Jobs. Secure printing allows the customer to defer printing of a job until a matching password is entered from the control panel. The customer assigns the password at the client workstation before printing. The job is stored, and printing is delayed until the password is entered on the printer's control panel. Using the same password will cause any previous jobs(s) to be deleted. A secure job that has not been printed or released is retained on disk through power cycles. This function requires the internal hard drive. Saved Print Jobs.
Saved print allows the user to save print jobs to the internal hard drive of the printer. The print job is not deleted after printing, it is stored on the hard drive for print on demand. This function requires the internal hard drive.
Solid inks
Solid inks, sometimes called phase-change inks, are solid at room temperature and are liquid at the higher temperature used during printing. The inks solidify almost instantly after being jetted onto the printer's drum. Because Xerox proprietary solid inks bleed much less than ordinary liquid inks, they allow the printer to print brilliant colors on plain paper. Each Xerox solid-ink printer's inks are especially formulated for that printer; the inks are NOT interchangeable. Using the wrong ink in a printer may damage the printhead or other subsystems. The Phaser 860 uses the ColorSticks® II ink formulation which enables solid ink documents to be fed through auto-document feeders on copiers.
Note
Turning the printer off and allowing it to cool causes it to perform a printhead cleaning and purge cycle upon power-up. The printer's purge cycle consumes a significant amount of ink. During normal use and servicing, turn the printer off and allow it to cool only when necessary.
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Phaser 840/850/860/8200 Color Printer - Service Manual
Phaser 840/850 RAM and Printer Capabilities
The Phaser 840 printer features two DIMM connectors which accept both 32- or 64-Mbytes RAM DIMMs (16-Mbyte RAM DIMMs work but are not offered). The Phaser 850 printer features two DIMM connectors which will accept both 64- or 128-Mbytes RAM DIMMs. The printers can use SDRAM DIMMs meeting these specifications:
I I I I I I I I I
168-pin DIMM Synchronous DRAM 3.3 volts 10 nsec speed Valid on-board Serial Presence Detect ROM Unbuffered Latency of 2 9 address columns (Phaser 850 printer allows 32-Mbytes DIMM to be in 8 columns) Maximum of 2.8 cm (1.1 in.) in height (Phaser 840 printer only). SDRAM DIMMs from other Phaser printers, such as the Phaser 740 and Phaser 780 color printers may be too tall to fit inside a Phaser 840 printer.
Upon power-up, the image processor interrogates the 256-byte Serial Presence Detect EEPROM, which describes the DIMM in great detail, such as data width, clock delay, number of address columns and row, refresh rate and more. If the DIMM does not meet the required specifications, it will be ignored; no error message will be reported.
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Memory Considerations Phaser 840/850
With more memory, the printer dual-frame buffers for printing one image while processing a second image (which gives greater printing throughput). The printer's capabilities can be increase as detailed in the following table. For the Phaser 840 printer, adding RAM memory, and installing the SCSI daughter card enables the Plus and Extended configurations features. For the Phaser 850 printer, installing the DP Option code ROM module and adding RAM enables these features.
Table 1-1 Installed RAM and printer capabilities
Feature (32 Mbytes) 840N 850N yes yes yes no no (64 Mbytes) 840DP 850DP yes yes yes yes yes. The printer supports fast, standard and enhanced 2-sided prints yes yes yes yes 500 records. 5000 records with optional hard drive 1 Letter-size image (128 Mbytes) 840DX 850DX yes yes yes yes yes. The printer supports 2-sided, high-resolution, 1200 x 600 dpi print yes yes yes yes 5000 records with included hard drive 2 Letter-size images
Fast Color (draft) printing Standard Printing Enhanced Printing High-Resolution/ Photo Printing 2-sided printing
Color PCL 5C Pipelining Check Print Collation (requires hard drive) Job accounting
yes no no no 50 records
Frame buffer (lower print resolutions can provide additional frame buffer space)
1 Letter size image
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Phaser 840/850/860/8200 Color Printer - Service Manual
Print the Configuration Page and check the item "Installed RAM" to see what type of RAM is installed. For example: Installed RAM: 64 Mbytes Mem slot 1: SDRAM/parity/64 MB/KMM366S823BTL-G0 Mem slot 2: Empty This is a list of SDRAM DIMMs that are branded for use by Xerox in this printer at the time this guide was published:
Table 1-2 Acceptible SDRAM DIMMs
Size 32 Mbytes 32 Mbytes 64 Mbytes 64 Mbytes 32 Mbyte 64 Mbyte 64 Mbyte 128 Mbytes 128 Mbytes 32 Mbytes 32 Mbytes 64 Mbytes 64 Mbytes 64 Mbytes 64 Mbytes 128 Mbytes 128 Mbytes Maker Samsung Micron Samsung Micron/Crucial Samsung Samsung Samsung Samsung Samsung Micron Micron Micron Micron Micron Micron Micron Micron Part Number KMM366S403CTL-G0 MT16LSDT464AG-662XX KMM366S823BTL-G0 CT8M64S4D10-MBTBGLP KMM366S424DTS-GL KMM366S823DTS-GL KMM366S924BTS-GL KMM366S1623DT-GL KMM366S1724BT-GL MT4LSDT464AG-662xx MT4LSDT464AG-10Exx MT8LSDT864AG-662xx MT8LSDT864AG-10Exx MT4LSDT864AG-662xx MT4LSDT864AG-10Exx MT16LSDT1664AG-662xx MT16LSDT1664AG-10Exx Printer 840/850 840/850 840/850 840/850 850 (see note) 850 850 850 850 850 (see note) 850 (see note) 850 850 850 850 850 850
Note
The 32-Mbyte DIMM marked for 850-only are not compatible with the other RAM DIMMs because the 32-Mbyte RAM DIMM is an 8-column type; the other DIMMs are 9-column types. If one of each type is installed in the Phaser 850 printer, only the 9-column DIMM will be enabled.
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Phaser 860 RAM and Printer Capabilities
The Phaser 860 printer features two SODIMM connectors which accept off the shelf 64MB or 128 MB SODIMM SDRAM memory modules meeting these specifications:
I I I I I I I
144-pin SODIMM Synchronous DRAM 3.3 volts PC100 compliant Valid on-board Serial Presence Detect ROM Built using 64 or 128Mbit SDRAM parts 100MHz operation at CAS Latency = 2
Upon power-up, the image processor interrogates the Serial Presence Detect EEPROM, which describes the SODIMM in great detail, such as data width, clock delay, number of address columns and row, refresh rate and more. If the SODIMM does not meet the required specifications, it will be not be used. If there are no good SODIMMs you will receive a RAM error. If one SODIMM is good you will receive a temporary error message and the printer will continue with power up. Print the Configuration Page and check the item "Installed RAM" to see what type of RAM is installed. This is a list of SODIMMs that are branded for use by Xerox in this printer at the time this guide was published:
Table 1-3 Acceptible SODIMMs
Size 64 Mbytes 64 Mbytes 128 Mbytes 128 Mbytes Maker Samsung Micron Samsung Micron Part Number 156-4831-00 MT8LSDT864HG-10E 156-4832-00 MT8LSDT1664HG-10E
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Phaser 840/850/860/8200 Color Printer - Service Manual
Memory Considerations Phaser 860
With more memory, the printer dual-frame buffers for printing one image while processing a second image (which gives greater printing throughput). The printer's capabilities can be increase as detailed in the following table. For the Phaser 860 printer, installing the DP Option code ROM module and adding RAM enables these features.
Table 1-4 Installed RAM and printer capabilities
Feature (64 Mbytes) 860B 860N yes yes yes no no (128 Mbytes) 860DP 860DPF 860DX yes yes yes yes yes. The printer supports 2-sided, high-resolution, 1200 x 600 dpi print yes yes yes 500 records. 5000 records with included hard drive 2 Letter-size images
Fast Color (draft) printing Standard Printing Enhanced Printing High-Resolution/ Photo Printing 2-sided printing
Color PCL 5c Pipelining Collation (requires hard drive) Job accounting
yes no no 500 records.
Frame buffer (lower print resolutions can provide additional frame buffer space) Proof Print Secure Print Saved Print (Requires Hard Drive)
1 Letter-size image
no
yes
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Print Engine Assemblies 840/850/860
Cap/wipe/purge assembly Drum Transfix roller Ink load assembly
Printhead
Process motor
Paper/ drum heater Y-axis motor X-axis drive and motor Paper feed motor
Fig 1-3 Internal features of the print engine
0388-0
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Circuit Boards
Seven circuit boards support the printer's electronics. Two boards, called I/O boards (left and right), support the front panel, solenoids and sensors. The main board contains the printer's CPU processor, RAM and ROM. The power control board distributes power supply voltages to the other printer boards and many of the printer motors. The power supply converts the AC line voltage into internal AC and DC voltages. The front panel provides a user interface to the printer. The printhead drive board, a part of the printhead, manages the signals and voltages of the printhead's printing elements and sensors. The optional network card (Phaser 840 and 850 only) and internal hard drive could be considered eight and ninth circuit boards.
Front panel
I/O board right
0388-03
Fig 1-4 Circuit boards of the print engine (right front view of the Phaser 850)
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Printhead drive board Internal hard drive Drum Maintenance counter EEPROM
Network card
Power control board Power supply Main board I/O board left
0388-04
Fig 1-5 Circuit boards of the print engine (left rear view Phaser 850)
Printhead Drive Board Power Control Board I/O Board left
Drum Maintenance Counter EEPROM Internal Hard Drive
Main Board Power Supply
P860-004
Fig 1-6 Circuit Boards of the print engine (right rear view Phaser 860)
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Phaser 840/850/860/8200 Color Printer - Service Manual
The printer's I2C bus
An internal data bus, called the I2C bus, connects all I/O boards to the main board. Through this single bus, the main board can "poll" the I/O boards for the state of the printer's sensors as well as actuate the printer's solenoids. This data bus greatly simplifies the wiring that would otherwise be required for monitoring numerous sensors and solenoids. The I2C bus also extends down to the High-Capacity Paper Trays.
High-capacity Paper Tray connection
I2C bus
0388-05
Fig 1-7 The printer's I2C bus
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Printhead Maintenance System
The printer features a printhead maintenance system used to clean the printhead faceplate and clear clogs from the printhead nozzles. The system consists of a vacuum pump assembly, the cap/wipe/purge assembly and the cap/wipe/purge carriage drive.
Cap/wipe/purge carriage drive
Vacuum pump assembly Cap/wipe/purge assembly
Fig 1-8 Printhead maintenance system of the print engine
0388-06
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Phaser 840/850/860/8200 Color Printer - Service Manual
Sensor Maps
Sensors in the printer provide information to the main board to determine the state of the printer. The printer monitors the positions of some of the movable assemblies, such as the drum, as well as the temperature of many other assemblies, such as the printhead, paper preheater and the drum.
Note
Unlike the Phaser 840 printer, the Phaser 850 /860 printer does not have a separate drum-home position sensor.
Ink-load cover sensor Ink-sticklow sensor Top cover switch Front cover switch
Ink-stickout sensor
Exit / tray-full sensor
A4-size media sensor A-size media sensor Cap/wipe/purge home sensor Preheater entry/left edge sensor
Maintenance blade position sensor Paper-empty sensor
0388-07
Hand-feed sensor Paper-pick sensor
Tray type sensors
Fig 1-9 Sensors and switches on the right side of the print engine
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Transfix exit sensor
Drum temperature sensor
Duplex paper sensor Drum-homeposition sensor (Phaser 840 only) Drum encoder sensor Preheater exit sensor
Process gear position sensor Transfix roller Preheater exit sensor located on inside wall of drum/transfix frame
Preheater Drum
0388-34
Fig 1-10 Switches and Sensors on the left side of the print engine
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Caution The actual position of some printer assemblies, such as the printhead or the cap/wipe/purge assembly, cannot be ascertained at all times. The printer records, in NVRAM, where it last positioned such assemblies each time it moves them. If, after power-down or a power interruption, the assemblies are manually repositioned, the printer erroneously assumes that the assemblies are in the position it last left them. This assumption can result in damage to the printer when it tries to position the assemblies. For example, the printhead could be tilted forward and crash into the raised cap/wipe/purge assembly.
Before turning on the printer, ensure the printhead is tilted forward, centered in front of the drum and the cap/wipe/purge assembly is in the retracted, home position. The tilt cam gear should be disengaged from the gear drive train. Electric clutches and solenoids are used by the printer to engage rollers as needed to move paper through the printer as well as start some print processes.
Drum maintenance cam clutch Upper feedroller clutch
Cap/wipe/purge clutch
Air valve solenoid Pick clutch Transfix solenoid
0388-08
Fig 1-11 Solenoids and clutches on the print engine
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Combination sensors and their meanings
Combinations of sensors are used by the printer to determine the type of standard (or upper) media tray installed in the printer.
Media tray type sensing
The combinations of the three tray sensors inform the print engine what type of media tray is installed. (The print engine does not detect the type of media installed in the tray; it only detects the particular tray being used by the presence of sensor flags on the side of the tray.) The tray sensors are located on the right-side interior of the paper tray slot, mounted on I/O board right. There are five tray types:
I I I I I
Letter (A-size). This tray is sized for 8.5 x 11-inch (U.S.) paper as well as low-volumes of A-size transparency film. Metric Letter (A4-size). This tray is used for 210 x 297 mm (Metric) paper as well as low-volumes of A4-size transparency film. High-volume Transparency/Label (A). This tray supports high volumes of U.S.-size transparency film as well as laser quality, adhesive label stock. High-volume Transparency/Label (A4). This tray supports high volumes of Metric-size transparency film as well as laser quality, adhesive label stock. Legal Tray (Phaser 860 only) This tray supports Legal-size, US 8.5 x 14 inch paper.
Table 1-5 Tray switch sensor combinations
Tray type Top switch Middle switch Bottom switch A Paper Closed Open Open A4 Paper Open Closed Open A Transparency Closed Open Closed A4 Transparency Open Closed Closed Legal Size Closed Closed Open
The slide switch actuators on the media trays will open a switch in the forward position and close a switch in the rear position.
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Phaser 840/850/860/8200 Color Printer - Service Manual
The Main Board
The main board features the printer's PowerPC 603e processor that controls the engine and the PostScript processing. Prominent on the main board is the ROM code DIMM and the RAM DIMM plug-in modules. The code ROM DIMM also contains the printer's on-board fonts. For the Phaser 840, alternate ROM code DIMMs contain language fonts such as Kanji or Hangul. The Phaser 850 printer support two base Heisei Kanji fonts; other Asian fonts are available on the internal IDE drive. For the Phaser 860, all Asian fonts are available on the internal IDE drive. Network connection is provided through a built-in 10BaseT port in the Phaser 840 printer and a 10/100BaseT port for the Phaser 850/860 printer (not enabled in the Phaser 860B). For the Phaser 840 printer, a plug-in SCSI interface adapter board provides a SCSI port for an external hard drive or scanner. The Phaser 840 printer stores unique printer status and PostScript values in its socketed NVRAM and EEPROM modules. The printer's Ethernet address, unique to each printer, is stored in the EEPROM (printer ID chip), an 8-pin socketed IC. For the Phaser 850/860 printer, all printer NVRAM parameters, such as the printer ID, unique printer status and PostScript values, and Ethernet address, are all stored in the socketed EEPROM. All socketed components should be transferred to a replacement main board to maintain customer-unique settings.
SCSI riser EEPROM Printer ID board
RAM DIMMs NV RAM/ Real Time Clock Code ROM DIMM
0388-09
Fig 1-12 Features of the Phaser 840 printer main board
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EEPROM Printer ID
RAM DIMMs Code ROM module
0388-76
Fig 1-13 Features of the Phaser 850 printer main board
Factory Code ROM EEPROM Printer ID Hard Drive
ROM Upgrade Code DIMM
RAM SODIMMs
P860-002
Fig 1-14 Features of the Phaser 860 Main Board
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Phaser 840/850/860/8200 Color Printer - Service Manual
Front Panel - Phaser 840/850 Printers
These front panel features are found on the printer:
I I I
128 x 64 pixel backlighted graphic display Two push buttons and four arrow buttons Two LEDs
LCD. The backlighted LCD serves two purposes: displaying current image processor and print engine status information and displaying an interactive menu. Status information includes image processor status such as Ready to print, Receiving data and Printing. Print engine status includes messages such as Out of paper, Paper Jam, Add ink as well as error messages.
Customers can review and modify certain NVRAM, I/O ports and peripheral parameters.
Buttons. Four of the six buttons are arranged as a diamond-shaped keypad. The other two buttons are used as Select and Help.
Refer to "Check Value Menu Parameters", on page 4-135 for details on using the front panel controls to enter special printer modes. The topic "Resetting NVRAM", on page 4-156 explains how to use the front panel buttons to reset the NVRAM to its factory-default values.
Navigation buttons
Power
READY TO PRINT
Error
Help button
Fig 1-15 Printer front panel
Select button
0388-10
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Front Panel - Phaser 860
These front panel features are found on the printer:
I I I
128 x 64 pixel backlighted graphic display Four push buttons and two arrow buttons One LED status indicator
LCD. The backlighted LCD serves two purposes: displaying the current image processor and print engine status information and displaying an interactive menu. Status information includes an image processor status such as Ready to print, Receiving data and