COLOR LASERJET ENTERPRISE CP4020/CP4520

Transcription

1 COLOR LASERJET ENTERPRISE CP4020/CP4520 SERIES PRINTER Service Manual CP4025n CP4025dn CP4525n CP4525dn CP4525xh

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3 HP Color LaserJet Enterprise CP4020- CP4520 Series Printers Service Manual

4 Copyright and License 2009 Copyright Hewlett-Packard Development Company, L.P. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. Part number: CC Edition 1, 10/2009 Trademark Credits Adobe, Acrobat, and PostScript are trademarks of Adobe Systems Incorporated. Corel is a trademark or registered trademark of Corel Corporation or Corel Corporation Limited. Intel Core is a trademark of Intel Corporation in the U.S. and other countries. Java is a US trademark of Sun Microsystems, Inc. Microsoft, Windows, Windows XP, and Windows Vista are U.S. registered trademarks of Microsoft Corporation. PANTONE is Pantone, Inc's checkstandard trademark for color. UNIX is a registered trademark of The Open Group. ENERGY STAR and the ENERGY STAR mark are registered U.S. marks.

5 Conventions used in this guide TIP: Tips provide helpful hints or shortcuts. NOTE: Notes provide important information to explain a concept or to complete a task. CAUTION: product. Cautions indicate procedures that you should follow to avoid losing data or damaging the WARNING! Warnings alert you to specific procedures that you should follow to avoid personal injury, catastrophic loss of data, or extensive damage to the product. iii

6 iv Conventions used in this guide

7 Table of contents 1 Theory of operation Basic operation... 2 Sequence of operation... 3 Engine-control system... 4 DC controller... 5 Solenoids... 5 Clutches... 6 Switches... 6 Sensors... 7 Motors... 8 Fans... 9 High-voltage power supply Low-voltage power supply Overcurrent/overvoltage protection Safety Voltage detection Sleep (powersave) mode Low-voltage power supply failure Fuser control Fuser temperature control Fuser sleeve temperature protection Failure detection Fuser unit identification Fuser unit life detection Laser/scanner system Laser/scanner failure Protective-glass cleaners Image-formation system Image-formation process Step 1: Pre-exposure Step 2: Primary charging Step 3: Laser-beam exposure Step 4: Development Step 5: Primary transfer v

8 Step 6: Secondary transfer Step 7: Separation Step 8: Fusing Step 9: ITB cleaning Step 10: Drum cleaning Print cartridge Developing-roller engagement and disengagement Intermediate transfer belt (ITB) unit Primary-transfer-roller engagement and disengagement ITB cleaning Calibration Color-misregistration control Image-stabilization control Pickup, feed, and delivery system Pickup-and-feed unit Cassette pickup Cassette-presence detection Cassette lift operation and cassette paper-presence detection Cassette multiple-feed prevention Multipurpose tray pickup Paper feed Skew-feed prevention Paper detection Feed speed control Fusing and delivery unit Loop control Pressure-roller pressurization control Duplexing unit (HP Color LaserJet CP4525dn, HP Color LaserJet CP4025dn, and HP Color LaserJet CP4525xh only) Duplexing reverse and feed control Duplex print operation Jam detection Optional paper feeder Motor control Paper-feeder pickup and feed operation Paper-size detection and cassette-presence detection Paper-feeder cassette lift operation Paper feeder jam detection Removal and replacement Introduction Removal and replacement strategy Electrostatic discharge Required tools vi

9 Before performing service After performing service Post-service test Print-quality test Parts removal order Customer self repair (CSR) components Print cartridges Toner-collection unit Formatter PCA Hard drive Remove the hard drive Memory DIMM Remove the memory DIMM Enable memory Tray Fuser Feed and separation rollers (Trays 2-5) Pickup roller (Tray 1) Secondary transfer roller Reinstall the transfer roller Intermediate transfer belt (ITB) External panels, covers, and doors Identification and location Upper-left cover Power-supply cover Left cover Remove the left cover Front-top cover Remove the front-top cover Rear-top cover Remove the rear-top cover Right-front cover Remove the right-front cover Reinstall the power button Control-panel assembly Remove the control-panel assembly Front-door assembly Remove the front-door assembly Right-rear cover Remove the right-rear cover Rear cover Remove the rear cover Right-door assembly Internal assemblies vii

10 Cassette feed guide Secondary transfer assembly Reinstall the secondary transfer assembly Separation pad (Tray 1) Remove the separation pad (Tray 1) Registration density (RD) sensor assembly Remove the RD sensor assembly Registration assembly Remove the registration assembly Residual-toner-feed motor Remove the residual-toner-feed motor Residual-toner duct and feed assembly Remove the residual-toner duct and feed assembly Cartridge fan and environmental sensor Remove the cartridge fan and environmental sensor Toner-collection sensor and scanner-thermistor assembly Remove the toner-collection sensor and scanner-thermistor assembly Delivery fan Remove the delivery fan Delivery assembly Remove the delivery assembly Reinstall the delivery assembly Duplex-drive assembly Remove the duplex-drive assembly Power-supply fan Remove the power-supply fan Interconnect board (ICB) Remove the ICB DC controller PCA only Remove the DC controller PCA only Low-voltage power supply (LVPS) Remove the low-voltage power supply DC controller PCA and tray Remove the DC controller PCA and tray High-voltage power supply lower (HVPS-D) Remove the high-voltage power supply lower Reinstall the high-voltage power supply lower Developing-disengagement motor Remove the developing-disengagement motor Exhaust fan and fan duct Remove the exhaust fan and fan duct Reinstall the exhaust fan and fan duct Pickup motor Remove the pickup motor viii

11 Lifter-drive assembly Remove the lifter-drive assembly Lifter base assembly Remove the lifter base assembly Reinstall the lifter base assembly Tray-pickup drive assembly Remove the tray-pickup drive assembly Tray-pickup assembly Remove the tray-pickup assembly Laser/scanner assembly (Y/M) Remove the laser/scanner assembly (Y/M) Laser/scanner assembly (C/Bk) Remove the laser/scanner assembly (C/Bk) Reinstall the protective glass cleaner (PGC) actuators High-voltage power supply upper (HVPS-T) Remove the high-voltage power supply upper Reinstall the high-voltage power supply upper Yellow, magenta, cyan, and black drum motors Remove the yellow, magenta, cyan, and black drum motors Fuser motor Remove the fuser motor ITB motor Remove the ITB motor Main-drive assembly Remove the main-drive assembly Reinstall the main-drive assembly Fuser-drive assembly Remove the fuser-drive assembly Reinstall the fuser-drive assembly Optional paper feeder assemblies (1 x 500-sheet and 3 x 500-sheet) Front door (optional paper feeder) Rear cover (optional paper feeder) Right-front cover (optional paper feeder) Right door (optional paper feeder) Left cover (optional paper feeder) Remove the left cover (optional paper feeder) Right cover (optional paper feeder) Remove the right cover (optional paper feeder) Rear-right cover (optional paper feeder) Remove the rear-right cover (optional paper feeder) Pickup assembly (optional paper feeder) Remove the pickup assembly (optional paper feeder) Lifter assembly (optional paper feeder) Remove the lifter assembly (optional paper feeder) ix

12 Lifter-drive assembly (optional paper feeder) Remove the lifter-drive assembly (optional paper feeder) Pickup motor assembly (optional paper feeder) Remove the pickup motor (optional paper feeder) assembly Controller PCA (optional paper feeder) Remove the controller PCA (optional paper feeder) Solve problems Solve problems checklist Menu map Troubleshooting process Determine the problem source Pre-troubleshooting checklist Troubleshooting flowchart Power subsystem Power-on checks Power-on troubleshooting overview Tools for troubleshooting Individual component diagnostics LED diagnostics Understand lights on the formatter Engine diagnostics Defeating interlocks Disable cartridge check Engine-test button Paper-path test Manual sensor test (special-mode test) A TOP (top of page) sensor B and C loop sensors D fuser delivery sensor E duplex re-pickup sensor F output bin full sensor I developer alienation J fuser pressure-release sensor K primary transfer-roller-disengagement sensor L media sensor M front-door switch N right-door switch Manual sensor test 2 (special-mode test) O Tray 1 paper present sensor P Tray 2 paper present sensor Q Tray 2 paper surface 1 and 2 sensors R Tray 2 paper size switches x

13 S Tray 3 paper present sensor T Tray 3 feed sensor U Tray 3 paper surface 1 and 2 sensors V Tray 3 paper size switches W Tray 4 paper present sensor X Tray 4 feed sensor Y Tray 4 paper surface 1 and 2 sensors Z Tray 4 paper size switches a Tray 5 paper present sensor b Tray 5 feed sensor c Tray 5 paper surface 1 and 2 sensors d Tray 5 paper size switches V laser and 24V interlock and logic switches (and power switch) New ITB sensor Tray 3, 4, and 5 right door switch Paper-path sensors test Print/stop test Component tests Component test (special-mode test) Diagrams Block diagrams Plug/jack locations Location of connectors DC controller connector locations Controller PCA (1 x 500-sheet and 3 x 500-sheet optional paper feeders) Locations of major components General timing chart Circuit diagrams HP Easy Printer Care Open the HP Easy Printer Care software HP Easy Printer Care software sections Internal print-quality test pages Print-quality-troubleshooting pages Diagnostics page Cleaning page Configuration page Configuration page HP embedded Jetdirect page Embedded protocol page Finding important information on the configuration pages Color-band test Print-quality troubleshooting tools xi

14 Repetitive defects ruler Calibrate the product Control panel menus Control panel menus Show Me How menu Retrieve job menu Information menu Paper handling menu Manage supplies menu Configure device menu Diagnostics menu Service menu Interpret control-panel messages Control-panel message types Control-panel messages Event log messages Print an event log Show an event log Sample event log Clear the event log Event log message table Clear paper jams Common causes of jams Jam locations Clear jams in the right door Clear jams in the output bin area Clear jams in Tray Clear jams in Tray 2 or optional Trays 3, 4, or Clear jams in the lower right door (Tray 3, 4, or 5) Jam causes and solutions Jams in the output bin Jams in the fuser and transfer area Jams in the duplex area (HP Color LaserJet CP4525dn, HP Color LaserJet CP4025dn, and HP Color LaserJet CP4525xh only) Jams in Tray 1, Tray 2 and internal paper path Jams in Tray 3, 4, and Change jam recovery Solve paper-handling problems Product feeds multiple sheets Product feeds incorrect page size Product pulls from incorrect tray Paper does not feed automatically Paper does not feed from Tray 2, 3, 4, or Transparencies or glossy paper will not feed xii

15 Envelopes jam or will not feed in the product Output is curled or wrinkled Product will not duplex or duplexes incorrectly Use manual print modes Solve image-quality problems Image defects table Clean the product Clean the paper path Solve performance problems Solve connectivity problems Solve direct-connect problems Solve network problems Service mode functions Service menu Product resets Restore factory-set defaults Hard disk initialization (optional) NVRAM initialization Product cold reset Product updates Parts and diagrams Order parts, accessories, and supplies Part numbers Accessories Print cartridges and toner collection unit Memory Cables and interfaces Customer self repair (CSR) parts Service maintenance kits Unique components Screws How to use the parts lists and diagrams External covers, panels, and doors Right door assembly Front door assembly Internal components Internal components (1 of 7) Internal components (2 of 7) Internal components (3 of 7) Internal components (4 of 7) Internal components (5 of 7) Internal components (6 of 7) xiii

16 Internal components (7 of 7) Cassettes Paper pickup assembly Tray 1 paper pickup assembly Registration assembly Secondary transfer assembly Delivery assembly Fuser assembly PCAs Assessories Paper feeders Paper feeder external covers, panels, and doors X 500 paper feeder main body X 500 paper feeder main body Alphabetical parts list Numerical parts list Appendix A Service and support Hewlett-Packard limited warranty statement HP's Premium Protection Warranty: LaserJet print cartridge limited warranty statement HP Color LaserJet Fuser Kit Limited Warranty Statement End User License Agreement Customer self-repair warranty service Customer support Appendix B Product specifications Physical specifications Performance specifications Electrical specifications Acoustic specifications Environmental specifications Skew specifications Appendix C Regulatory information FCC regulations Environmental product stewardship program Protecting the environment Ozone production Power consumption Toner consumption Paper use Plastics HP LaserJet print supplies xiv

17 Return and recycling instructions United States and Puerto Rico Multiple returns (more than one cartridge) Single returns Shipping Non-U.S. returns Paper Material restrictions Disposal of waste equipment by users in private households in the European Union Chemical substances Material Safety Data Sheet (MSDS) For more information Declaration of Conformity Safety statements Laser safety Canadian DOC regulations VCCI statement (Japan) Power cord instructions Power cord statement (Japan) EMC statement (China) EMC statement (Korea) EMI statement (Taiwan) Laser statement for Finland GS statement (Germany) Substances Table (China) Restriction on Hazardous Substances statement (Turkey) Index xv