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HP Color LaserJet 4700/CP4005 Series
Service Manual

HP Color LaserJet 4700/CP4005 Series printers

Service Manual

Copyright © 2006 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. CB503-90929 Edition 1, 10/2006

FCC Class A Statement This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his own expense. The end user of this product should be aware that any changes or modifications made to this equipment without the approval of Hewlett-Packard could result in the product not meeting the Class A limits, in which case the FCC could void the user's authority to operate the equipment.

Trademark Credits Adobe®, Adobe Photoshop® and PostScript® are trademarks of Adobe Systems Incorporated. Bluetooth is a trademark owned by its proprietor and used by Hewlett-Packard Company under license. CorelDRAWTM is a trademark or registered trademark of Corel Corporation or Corel Corporation Limited. Linux is a U.S. registered trademark of Linus Trovalds. Microsoft®, Windows®, and Windows XP® are U.S. registered trademarks of Microsoft Corporation. PANTONE®* *Pantone, Inc's checkstandard trademark for color. UNIX® is a registered trademark of the Open Group. ENERGY STAR® and the ENERGY STAR logo® are U.S. registered marks of the United States Environmental Protection Agency. Safety Information WARNING! Potential Shock Hazard Always follow basic safety precautions when using this product to reduce the risk of injury from fire or electric shock.

Table of contents

1 Product information Printer configurations ............................................................................................................................. 2 HP Color LaserJet 4700 (Q7491A) ....................................................................................... 2 HP Color LaserJet 4700n (Q7492A) ..................................................................................... 3 HP Color LaserJet 4700dn (Q7493A) ................................................................................... 3 HP Color LaserJet 4700dtn (Q7494A) .................................................................................. 3 HP Color LaserJet 4700ph+ (Q7495A) ................................................................................. 4 HP Color LaserJet CP4005n (CB503A) ............................................................................... 4 HP Color LaserJet CP4005dn (CB504A) ............................................................................. 5 Printer features ...................................................................................................................................... 6 Printer walkaround ............................................................................................................................... 11 HP Color LaserJet 4700 models ......................................................................................... 11 HP Color LaserJet CP4005 models .................................................................................... 12 Identification, site requirements, and specifications ............................................................................ 15 Model and serial numbers .................................................................................................. 15 Power and regulatory label ................................................................................................ 15 Site requirements ................................................................................................................ 16 Space requirements ........................................................................................... 17 Physical specifications ....................................................................................... 18 Electrical specifications ....................................................................................................... 18 Environmental specifications .............................................................................................. 19 Acoustic emissions ............................................................................................................. 19 Supply storage requirements ............................................................................................. 20 Skew specifications ............................................................................................................. 20 Media specifications ............................................................................................................................ 21 Printing and paper storage environment ............................................................................ 21 Envelopes ........................................................................................................................... 22 Envelopes that have double side seams ........................................................... 23 Envelopes that have adhesive strips or flaps .................................................... 23 Envelope margins .............................................................................................. 23 Envelope storage ............................................................................................... 23 Labels .................................................................................................................................. 24 Label construction .............................................................................................. 24 Transparencies ................................................................................................................... 24 Supported types and sizes of print media .......................................................................... 25 Media to avoid ..................................................................................................................... 29 Media that can damage the printer ..................................................................................... 29 Printing on special media .................................................................................................................... 31 Transparencies ................................................................................................................... 31 Glossy paper .......................................................................................................................31

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Colored paper ..................................................................................................................... 32 Envelopes ........................................................................................................................... 32 Labels .................................................................................................................................. 32 Heavy paper ........................................................................................................................ 33 HP LaserJet Tough paper ................................................................................................... 33 Preprinted forms and letterhead ......................................................................................... 33 Recycled paper ................................................................................................................... 34 Weight equivalence table .................................................................................................... 34 Environmental product stewardship program ...................................................................................... 36 Protecting the environment ................................................................................................. 36 Ozone production ................................................................................................................ 36 Power consumption ............................................................................................................ 36 Toner consumption ............................................................................................................. 36 Paper use ............................................................................................................................ 36 Plastics ................................................................................................................................ 36 HP LaserJet print supplies .................................................................................................. 36 Return and recycling instructions ........................................................................................ 37 United States and Puerto Rico ........................................................................... 37 Multiple returns (two to eight cartridges) ........................................... 37 Single returns .................................................................................... 37 Shipping ............................................................................................. 37 Non-US returns .................................................................................................. 37 Paper ................................................................................................................................... 37 Material restrictions ............................................................................................................. 38 Disposal of waste equipment by users in private households in the European Union ...... 38 Material Safety Data Sheet (MSDS) ................................................................................... 39 For more information ........................................................................................................... 39 Hewlett-Packard Limited Warranty Statement .................................................................................... 40 Limited warranty for print cartridges and image drums ....................................................................... 42 Color LaserJet Image Fuser Kit and Image Transfer Kit Limited Warranty Statement ....................... 43 Country/region-specific safety statements .......................................................................................... 44 Laser safety ........................................................................................................................ 44 Canadian DOC regulations ................................................................................................. 44 VCCI statement (Japan) ..................................................................................................... 44 Power cord statement (Japan) ............................................................................................ 44 EMI statement (Korea) ........................................................................................................ 44 EMI statement (Taiwan) ...................................................................................................... 45 Finnish laser statement ....................................................................................................... 46 Australia .............................................................................................................................. 46 2 Service approach Service approach ................................................................................................................................. 50 Parts and supplies ............................................................................................................................... 51 Ordering parts, supplies, and accessories over the Internet .............................................. 51 Ordering directly through the embedded Web server (for printers with network connections) ........................................................................................................................ 51 Exchange program .............................................................................................................. 51 Supplies .............................................................................................................................. 51 World Wide Web ................................................................................................................. 51 HP Service Parts Information ............................................................................................. 52

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HP available services .......................................................................................................................... 53 Ordering related documentation and software .................................................................................... 55 3 Installation and configuration What ships in the box .......................................................................................................................... 58 Unpacking the printer .......................................................................................................................... 59 Loading detectable standard-sized media into Tray 2 and optional trays ........................................... 64 Connecting power ................................................................................................................................ 66 Installing a new control panel label ..................................................................................................... 67 Testing the printer operation ................................................................................................................ 68 Sleep delay ..........................................................................................................................................69 Setting sleep delay .............................................................................................................. 69 Disabling/enabling sleep mode ........................................................................................... 69 Connecting to a computer ................................................................................................................... 70 Parallel configuration .......................................................................................................... 70 USB configuration ............................................................................................................... 70 Auxiliary connection configuration ...................................................................................... 71 HP Jetdirect print servers ................................................................................................... 72 Available software solutions ............................................................................... 73 Wireless printing ................................................................................................................. 73 IEEE 802.11 standard ........................................................................................ 73 Bluetooth ............................................................................................................ 73 Printer software .................................................................................................................................... 74 Software ..............................................................................................................................74 Software features ............................................................................................... 74 Driver Autoconfiguration ..................................................................................... 74 Update Now ........................................................................................................ 74 HP Driver Preconfiguration ................................................................................ 75 Installing the printing system software ................................................................................ 75 Installing Windows printing system software for direct connections .................. 75 Installing Windows printing system software for networks ................................ 76 Setting up a Windows computer to use the network printer with Windowssharing ................................................................................................................ 77 Installing the software after the parallel or USB cable has been connected ..... 77 Uninstalling the software ..................................................................................................... 78 Removing software from Windows operating systems ...................................... 78 Software for networks ......................................................................................................... 78 HP Web Jetadmin .............................................................................................. 78 UNIX ...................................................................................................................79 Utilities ................................................................................................................................. 79 Embedded Web server ...................................................................................... 79 Features ............................................................................................ 79 Other components and utilities .......................................................................... 80 Printer drivers ...................................................................................................................................... 81 Supported printer drivers .................................................................................................... 81 Additional drivers ................................................................................................................ 81 Select the correct printer driver ........................................................................................... 82 Printer-driver Help (Windows) ............................................................................................. 82 Gaining access to the printer drivers .................................................................................. 82 Printer drivers for Macintosh computers .............................................................................................. 84

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Supported printer drivers .................................................................................................... 84 Gaining access to the printer drivers .................................................................................. 84 Software for Macintosh computers ...................................................................................................... 86 Installing Macintosh printing system software for networks ............................................... 86 Installing Macintosh printing system software for direct connections (USB) ...................... 87 To remove software from Macintosh operating systems .................................................... 88 Network configuration .......................................................................................................................... 89 Configuring TCP/IP parameters .......................................................................................... 89 Manually configuring TCP/IP parameters from the printer control panel ........... 89 Setting an IP address ......................................................................................... 89 Setting the subnet mask ..................................................................................... 90 Setting the default gateway ................................................................................ 91 Disabling network protocols (optional) (HP Color LaserJet 4700 Series only) .................................................................................................................... 91 Disabling IPX/SPX ............................................................................................. 92 Disabling DLC/LLC ............................................................................................. 92 Disabling AppleTalk ........................................................................................... 93 Setting network security on the printer ................................................................................................ 94 Locking the control panel .................................................................................................... 94 Levels of security ............................................................................................... 94 Using an ASCII PJL escape sequence to set network security ........................ 94 4 Maintenance Cleaning the printer and accessories .................................................................................................. 98 Cleaning spilled toner ......................................................................................................... 98 Vacuum specifications ....................................................................................... 98 Performing preventive maintenance .................................................................................................... 99 Managing the print cartridge .............................................................................................................. 100 HP print cartridges ............................................................................................................ 100 Non-HP print cartridges .................................................................................................... 100 Print cartridge authentication ............................................................................................ 100 Print cartridge storage ...................................................................................................... 100 Print cartridge life expectancy ........................................................................................... 100 Checking the supply level ................................................................................................. 101 Using the control panel .................................................................................... 101 Using the embedded Web server .................................................................... 101 Using HP Web Jetadmin .................................................................................. 101 Approximate replacement intervals for supplies ............................................................................... 102 ETB life .............................................................................................................................................. 103 Changing print cartridges .................................................................................................................. 104 Replacing a print cartridge ................................................................................................ 104 To replace the print cartridge ............................................................................................ 104 Replacing supplies ............................................................................................................................ 107 Locating supplies .............................................................................................................. 107 Supply replacement guidelines ......................................................................................... 107 Making room around the printer for replacing supplies .................................................... 108 Replacing the stapler cartridge (HP Color LaserJet 4700 Series) ................................... 108 Replacing the ETB ............................................................................................................ 111 Replacing the fuser ........................................................................................................... 111 Printer memory and fonts .................................................................................................................. 113

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Installing a hard drive, memory, and fonts ........................................................................................ 114 Installing a hard drive (HP Color LaserJet 4700 Series) .................................................. 114 Installing DDR memory DIMMs ........................................................................................ 117 Installing a flash memory card (HP Color LaserJet 4700 Series only) ............................. 121 Enabling memory .............................................................................................................. 125 To enable memory for Windows 98 and Me .................................................... 125 To enable memory for Windows 2000 and XP ................................................ 125 Installing an HP Jetdirect print server card (HP Color LaserJet 4700 Series only) .......................... 126 To install an HP Jetdirect print server card ....................................................................... 126 Setting the real-time clock ................................................................................................................. 130 Setting the date and time .................................................................................................. 130 To set the date format ...................................................................................... 130 To set the date ................................................................................................. 130 To set the time format ...................................................................................... 131 To set the time ................................................................................................. 131 Setting the wake time ....................................................................................................... 132 To set the wake time ........................................................................................ 132 Setting the sleep delay ..................................................................................................... 133 To set the sleep delay ...................................................................................... 133 5 Theory of operation Basic operation ..................................................................................................................................136 Operation sequence ......................................................................................................... 136 Power on sequence .......................................................................................................... 137 Internal components .......................................................................................................................... 139 Formatter system ............................................................................................................................... 141 Sleep mode .......................................................................................................................141 Image Resolution Enhancement technology (REt) .......................................................... 142 Input/Output ...................................................................................................................... 142 Parallel interface (HP Color LaserJet 4700 Series only) ................................. 142 USB 2.0 connector ........................................................................................... 142 ACC accessory port (HP Color LaserJet 4700 Series only) ............................ 142 Flash (HP Color LaserJet 4700 Series only) ................................................... 143 Hard drive accessory (HP Color LaserJet 4700 Series only) .......................... 143 CPU ..................................................................................................................143 Printer memory ................................................................................................................. 143 Read-only memory ........................................................................................... 143 Random-access memory ................................................................................. 143 DIMM slots ........................................................................................................................ 143 Flash memory .................................................................................................. 143 Nonvolatile memory ......................................................................................... 143 PJL overview ..................................................................................................................... 144 PML ................................................................................................................................... 144 Control panel ..................................................................................................................... 144 Engine control system ....................................................................................................................... 145 DC controller PCB ............................................................................................................. 145 Block operation ................................................................................................ 147 Motors, fans, and environment sensor ............................................................................. 147 Failure detection ............................................................................................................... 149 Drum motor failure detection ............................................................................ 149

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Fuser motor failure detection ........................................................................... 150 ETB motor failure detection ............................................................................. 150 Upper exhaust fan failure detection ................................................................. 150 Cartridge fan failure detection .......................................................................... 150 Delivery fan failure detection ............................................................................ 150 Power supply fan failure detection ................................................................... 150 Duplexer fan failure detection .......................................................................... 151 Low-voltage power supply ................................................................................................ 151 Fuser control circuit .......................................................................................... 151 Low-voltage power supply circuit ..................................................................... 153 Protective functions ......................................................................... 154 Safety .............................................................................................. 155 Sleep mode ..................................................................................... 155 Power supply recognition ................................................................ 155 Heater temperature control ............................................................................................... 155 Initial rotation temperature control ................................................................... 156 Start-up temperature control ............................................................................ 156 Print temperature control ................................................................................. 157 Between-sheets temperature control ............................................................... 157 Temperature protective function ....................................................................................... 157 Protective function by the CPU ........................................................................ 157 Protective function by the fuser heater safety circuit ....................................... 157 Protective function by the thermoswitch .......................................................... 158 Temperature failure detection ........................................................................................... 158 Start-up failure (warmup failure) ...................................................................... 158 Abnormal low temperature of main thermistor (no conduction) ....................... 158 Abnormal high temperature of main thermistor ............................................... 158 Abnormal low temperature of sub thermistor (no conduction) ......................... 159 Abnormal high temperature of sub thermistor ................................................. 159 Drive circuit abnormality ................................................................................... 159 High-voltage power supply ............................................................................................... 159 Generation of biases ........................................................................................ 160 Video interface control ...................................................................................................... 162 Laser/scanner system ....................................................................................................................... 163 Laser control ..................................................................................................................... 164 Scanner control ................................................................................................................. 165 Image formation system .................................................................................................................... 167 Image formation process .................................................................................................. 169 Electrostatic latent image formation block ........................................................................ 171 Step 1: Pre-exposure ....................................................................................... 171 Step 2: Primary charging ................................................................................. 172 Step 3: Laser beam exposure .......................................................................... 172 Development block ........................................................................................................... 172 Step 4: Development ........................................................................................ 172 Transfer block ................................................................................................................... 173 Step 5: Attraction .............................................................................................. 173 Step 6: Transfer ............................................................................................... 173 Step 7: Separation ........................................................................................... 174 Fusing block ......................................................................................................................174 Step 8: Fusing .................................................................................................. 174

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Cleaning block .................................................................................................................. 175 Step 9: Drum cleaning ...................................................................................... 175 Print cartridges .................................................................................................................. 175 Memory tag ...................................................................................................... 177 Cartridge presence detection ............................................................................................ 177 Memory tag detection ....................................................................................... 177 Photosensitive drum detection ......................................................................... 177 Developing cylinder disengaging control ......................................................... 178 ETB (electrostatic transfer/transport belt) ......................................................................... 178 Transfer roller (Y, C, M) engagement/disengagement detection ..................................... 180 Transfer roller engagement/disengagement control ......................................................... 180 Calibration and cleaning ................................................................................................... 181 ETB cleaning .................................................................................................... 182 Color misregistration corrective control ........................................................... 183 Color misregistration detection ......................................................................................... 184 Image stabilization control ................................................................................................ 185 Environmental change control ......................................................................... 186 Conditions leading up to DHALF ...................................................................... 187 Image halftone calibration control (DHALF) ..................................................... 187 Image density detection ................................................................................... 187 Pickup/feed system ........................................................................................................................... 189 Pickup/feed unit ................................................................................................................ 194 Paper tray detection and paper tray media size detection .............................. 194 Paper tray pickup operation ............................................................................. 195 Media lift-up operation ...................................................................................... 196 Initial lift-up ...................................................................................... 196 Lift-up during printing ....................................................................... 196 Multiple-feed prevention ................................................................................... 197 Skew correction ................................................................................................ 199 Media detection ................................................................................................ 200 Feed speed control .......................................................................................... 201 Fusing and delivery block ................................................................................................. 202 Loop control ..................................................................................................... 202 Fusing pressure release mechanism ............................................................... 203 Jam detection ................................................................................................... 204 Pickup delay jam ............................................................................. 205 Pickup stationary jam ...................................................................... 205 Delivery delay jam ........................................................................... 205 Door open jam ................................................................................. 205 Residual paper jam ......................................................................... 205 Reversing unit jam 1 ........................................................................ 205 Reversing unit jam 2 ........................................................................ 206 Duplexing pickup unit jam 1 ............................................................ 206 Automatic delivery function ............................................................. 206 Duplex feed unit ................................................................................................................ 206 Reversing/duplexing feed operation ................................................................ 207 Jam detection ................................................................................................... 209 Reversing unit jam 1 ........................................................................ 210 Reversing unit jam 2 ........................................................................ 210 Duplexing pickup unit jam 1 (Duplexing unit stationary jam) .......... 210

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500-sheet paper feeder ..................................................................................................................... 211 Pickup and feed operations .............................................................................................. 212 Stapler/stacker (HP Color LaserJet 4700 Series only) ..................................................................... 214 Staple mode ......................................................................................................................214 Stacker mode ....................................................................................................................214 Offset mode ...................................................................................................................... 214 Messages .......................................................................................................................... 215 6 Removal and replacement Removal and replacement strategy ................................................................................................... 218 Repair notices ................................................................................................................... 218 Caution regarding electrostatic discharge (ESD) ............................................................. 218 Required tools ................................................................................................................... 218 Types of screws ................................................................................................................ 219 Parts-removal tree ............................................................................................................ 220 User-replaceable parts ...................................................................................................................... 221 Print cartridges and ETB ................................................................................................... 222 Fuser .................................................................................................................................222 Tray 1 pickup roller and separation pad ........................................................................... 222 Tray 2-x separation roller .................................................................................................. 225 Tray 2-x feed and pickup rollers ....................................................................................... 226 Formatter .......................................................................................................................... 227 Compact flash ................................................................................................................... 228 HP Jetdirect print server card (4700 models) ................................................................... 228 DDR memory DIMMs ........................................................................................................ 228 Hard drive (4700 models) ................................................................................................. 228 Installing a new control panel label ................................................................................... 228 Covers and external components ...................................................................................................... 230 Paper tray (Tray 2) ............................................................................................................ 231 Multipurpose tray (Tray 1) ................................................................................................. 231 Front cover ........................................................................................................................235 Duplex cover ..................................................................................................................... 239 Face down tray assembly ................................................................................................. 239 Top cover .......................................................................................................................... 240 Right cover ........................................................................................................................245 Left cover .......................................................................................................................... 247 Rear cover ........................................................................................................................ 249 Control panel ..................................................................................................................... 250 Main assemblies ................................................................................................................................253 Disengaging drive assembly ............................................................................................. 254 Remove main drive assembly ........................................................................................... 256 Reinstall main drive assembly .......................................................................................... 263 Pickup motor assembly ..................................................................................................... 273 Lifter drive assembly ......................................................................................................... 275 Delivery assembly ............................................................................................................. 278 Paper feed assembly ........................................................................................................ 283 Fuser drive assembly ........................................................................................................ 286 Laser/scanner assembly ................................................................................................... 287 Motors and fans .................................................................................................................................297 Disengaging drive motor ................................................................................................... 298

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Drum drive motors (Y/C/M/K) ........................................................................................... 298 Power supply fan/shroud (Fan 4) ..................................................................................... 299 Delivery fan/shroud (Fan 3) .............................................................................................. 300 Cartridge fan/shroud (Fan 2) ............................................................................................ 302 Upper exhaust fan (Fan 1) ................................................................................................ 305 Sensors and switches ........................................................................................................................ 308 Environment sensor .......................................................................................................... 308 Power switch assembly .................................................................................................... 309 PCBs .................................................................................................................................................. 312 DC controller PCB ............................................................................................................. 312 Low-voltage power supply PCB ........................................................................................ 319 Memory controller PCB ..................................................................................................... 321 E label memory contacts and cable .................................................................................. 322 High-voltage power supply PCB ....................................................................................... 324 Toner level detection PCB ................................................................................................ 326 High-voltage contacts ....................................................................................................... 326 500-sheet paper feeder ..................................................................................................................... 328 500-sheet paper feeder right cover .................................................................................. 329 500-sheet paper feeder rear cover ................................................................................... 329 500-sheet paper feeder left cover ..................................................................................... 330 500-sheet paper feeder front cover .................................................................................. 331 500-sheet paper pickup drive assembly ........................................................................... 333 500-sheet paper feeder lifter drive assembly ................................................................... 337 500-sheet paper feeder pickup rollers .............................................................................. 339 Stapler/stacker (4700 models) .......................................................................................................... 340 Remove the stapler/stacker from the printer .................................................................... 340 Staple cartridge left cover ................................................................................................. 341 Output tray ........................................................................................................................ 341 Left cover .......................................................................................................................... 342 Top cover .......................................................................................................................... 342 Right cover ........................................................................................................................344 Staple cartridge ................................................................................................................. 346 Stapler/stacker PCB .......................................................................................................... 347 Stapler/stacker unit assembly 24v 2.5 amp ...................................................................... 348 Duplexer ............................................................................................................................................ 349 Top duplexing assembly ................................................................................................... 349 Duplex tray ........................................................................................................................349 7 Troubleshooting Introduction ........................................................................................................................................352 Troubleshooting process ................................................................................................................... 354 Pre-troubleshooting checklist ............................................................................................ 354 Troubleshooting checklist ................................................................................................. 355 Troubleshooting flowchart ................................................................................................. 356 Power-on checks .............................................................................................................. 357 Power-on troubleshooting overview ................................................................. 357 Control panel messages .................................................................................................................... 359 Warning messages ........................................................................................................... 359 Error messages ................................................................................................................. 359 Critical error messages ..................................................................................................... 359

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Message listing ................................................................................................................. 359 Formatter lights .................................................................................................................................. 395 Embedded HP Jetdirect LEDs .......................................................................................... 395 Heartbeat LED .................................................................................................................. 396 Accessory lights (4700 models) ........................................................................................................ 397 Interpreting stapler/stacker indicator light codes .............................................................. 397 Replacement parts configuration ....................................................................................................... 400 Formatter and DC controller ............................................................................................. 400 Formatter (new or previously installed in another printer) ................................................ 400 DC controller (new or previously installed in another printer) .......................................... 401 Formatter and firmware compact flash ............................................................................. 401 Paper path troubleshooting ............................................................................................................... 402 Jams .................................................................................................................................. 402 Jam locations .................................................................................................................... 402 Jam locations by error message ....................................................................................... 405 Jam recovery .................................................................................................................... 406 To disable paper jam recovery ......................................................................... 407 Avoiding jams .................................................................................................................... 407 Solving repeated jams ...................................................................................................... 408 Persistent jams ................................................................................................................. 408 Basic troubleshooting for jams ......................................................................... 408 Data collection .................................................................................................. 409 General paper path troubleshooting ................................................................ 409 Paper path checklist ......................................................................................... 410 Jams in Tray 1 .................................................................................................. 410 Jams in Tray 2 .................................................................................................. 411 Jams in the paper path ..................................................................................... 412 Jams in the top cover ....................................................................................... 412 Jams in the duplex path ................................................................................... 413 Common causes of paper jams ........................................................................................ 414 Paper jams ....................................................................................................... 414 Clearing jams .................................................................................................................... 415 Jam in Tray 1 ................................................................................................... 415 Jam in Tray 2 or optional trays ......................................................................... 416 Jams in top cover area ..................................................................................... 417 Clearing a jam in the top cover area ............................................... 418 Clearing other jams .......................................................................................... 420 Jams in the stapler/stacker (4700 models) ...................................................... 423 Staple jams ....................................................................................................... 429 Paper transport troubleshooting ........................................................................................................ 432 Multiple pages are fed ...................................................................................................... 432 Media is wrinkled or folded ............................................................................................... 432 Paper is skewed ................................................................................................................ 433 Image formation troubleshooting ....................................................................................................... 434 Print quality troubleshooting tools ..................................................................................... 434 Print quality problems associated with media .................................................................. 434 Overhead transparency defects ........................................................................................ 435 Print quality problems that are associated with the environment ..................................... 436 Print quality problems that are associated with jams ....................................................... 436 Print quality troubleshooting pages .................................................................................. 436

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Understanding color variations ......................................................................................... 436 Common causes of color variation ................................................................... 437 Color selection process .................................................................................................... 437 Matching colors ................................................................................................................. 437 PANTONE* color matching .............................................................................. 437 Swatch book color matching ............................................................................ 437 Using color ........................................................................................................................ 438 HP ImageREt 3600 .......................................................................................... 438 Paper selection ................................................................................................ 438 sRGB ................................................................................................................438 Adobe® RGB ................................................................................................... 439 CMYK+ ............................................................................................................. 439 Color options .....................................................................................................................439 Print in grayscale .............................................................................................. 439 Automatic or manual color adjustment ............................................................ 440 Manual color options ........................................................................................ 440 Halftone options ............................................................................................... 440 Neutral Grays ................................................................................................... 440 Edge Control .................................................................................................... 440 RGB Color ........................................................................................................ 441 Adjusting color balance ..................................................................................................... 441 To adjust color density ..................................................................................... 441 Web-downloadable color tables ....................................................................... 442 Image defects .................................................................................................................................... 443 Light image ....................................................................................................................... 444 Light color ......................................................................................................................... 445 Dark image ........................................................................................................................ 445 Dark color .......................................................................................................................... 446 Completely blank image ................................................................................................... 446 All black or solid color ....................................................................................................... 447 Dots in vertical lines .......................................................................................................... 447 Dirt on the front or back of the paper ..................................................