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HP LaserJet Enterprise 500 DC controller

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DC controller

The DC controller controls the operational sequence of the printer.

Figure 1-3DC controller block diagram

Fuser

Laser/scanner

ENWW

Engine control system

5

Contents

Page Page Page Page Conventions used in this guide WARNING Page Table of contents 2 Removal and replacement Page Page Page 3 Solve problems Page Page Page Page Page Page Page 4 Parts and diagrams Appendix A Service and support Appendix B Product specifications Appendix C Regulatory information Index List of tables Sign Retrieve Job From USB Job From Device Memory Supplies Page Page List of figures Page Page Page Page Page Page Page Page Page 1 Theory of operation Page Sequence of operation Page DC controller Solenoids Clutches Switches Sensors Motors and fans Page Page High voltage power supply Page Page Page Overcurrent/overvoltage protection Safety Sleep (powersave) mode Power supply voltage detection Low voltage power supply failure Power off condition Fuser temperature control circuit Fuser over temperature protection Fuser failure detection Page Laser failure Beam-detect (BD) failure Scanner-motor Page Image formation process Step 1: Pre-exposure Step 2: Primary charging Step 3: Laser-beamexposure Step 4: Development Step 5: Primary transfer Step 6: Secondary transfer Step 7: Separation Step 8: Fusing Step 9: ITB cleaning Step 10: Drum cleaning Page Developing roller engagement and disengagement Page Intermediate transfer belt (ITB) unit Figure 1-23 ITB unit Primary-transfer-rollerengagement and disengagement Page Page ITB cleaning Color misregistration control Image stabilization control Page Page Page Page Pickup-and-feedunit Cassette pickup Cassette presence detection Cassette lift operation Cassette paper presence detection Cassette media width detection Multifeed prevention Multipurpose tray pickup Paper feed Skew-feedprevention OHT detection Fusing and delivery unit Loop control Pressure-rollerpressurization control Duplexing unit (duplex models) Duplexing-reverse unit Duplexing-feed Duplexing reverse and feed control Duplex pickup operation Page Page Page Page Paper-feederpickup and feed operation Paper size detection and cassette presence detection Page Paper feeder cassette lift operation Page Paper feeder presence detection Paper-feedermultiple feed prevention Paper feeder jam detection 2 Removal and replacement Cautions during removal and replacement Electrostatic discharge Required tools Print-qualitytest Parts removal order Page Print cartridges Reinstallation tip Duplex reverse guide Toner collection unit Page Formatter PCA Remove the HDD Page Remove the SSM Install a replacement hard drive Tray cassette Fuser Pickup roller (Tray 1) Pickup roller (Tray 2) Page Pickup and feed rollers (Tray 3) Page Separation roller (Tray 2) Secondary transfer roller Reinstall the transfer roller Secondary transfer assembly Reinstall the secondary transfer assembly Intermediate transfer belt (ITB) Page Right door (optional paper feeder) Page Identification and location Front door assembly Page Right door assembly Page Page Page Right rear cover Page Remove the left cover Page Remove the left bottom cover Remove the left bottom handle Hardware integration pocket (HIP) (dn and xh models only) Control panel assembly Page Remove the right front cover Page Page Reinstall the power button Remove the front top cover Page Remove the rear cover and upper rear cover Page Page Remove the rear top cover Page Remove the right bottom handle Remove the rear bottom handle Remove the delivery fan, cartridge fan, and environmental sensor Page Page Page Page Remove the toner collection sensor Page Remove the residual toner feed motor Page Page Page Reinstall the residual toner collection door Remove the RD sensor assembly Page Page Page Remove the power supply fan and fan duct To remove the fan only To remove the fan and fan duct Page Remove the registration assembly Page Page Page Page Remove the lower pickup guide Page Reinstall the lower pickup guide Remove the ICB Page Remove the DC controller PCA Page Page Remove the low voltage power supply Page Page Page Remove the high voltage power supply lower Page Reinstall the high voltage power supply lower Remove the developing disengagement motor Page Remove the pickup motor Remove the lifter drive assembly Page Remove the automatic close assembly Remove the cassette pickup drive assembly Page Page Page Page Reinstall the cassette pickup drive assembly Page Cassette pickup assembly Remove the cassette pickup assembly Page Remove the laser/scanner assembly (Y/M) Page Page Page Page Page Page Laser/scanner assembly (C/Bk) Remove the laser/scanner assembly (C/Bk) Page Page Page Reinstall the protective glass cleaner (PGC) actuators Callout Page High voltage power supply upper (HVPS-T) Remove the high voltage power supply upper Duplex models only Page Reinstall the high voltage power supply upper Drum motor Remove the drum motor Drum motor 2 or drum motor Remove the drum motor 2 or drum motor Fuser motor Remove the fuser motor Main drive assembly Remove the main drive assembly Page Page Page Reinstall the main drive assembly Page Page Page Page Diagnostics Color Band Test Fuser drive assembly Remove the fuser drive assembly Page Page Reinstall the fuser drive assembly Delivery assembly Remove the delivery assembly Page Page Reinstall the delivery assembly Duplex drive assembly Remove the duplex drive assembly Drawer connector Page 3 Solve problems Page Page Print the menu maps ●Administration ●Reports ●Configuration/Status Pages Administration Menu Map Print the current settings pages Current Settings Page Access the Preboot menu Data Attention Cold reset using the Preboot menu Troubleshooting flowchart Power-onchecks Page LED diagnostics Formatter to control panel communication interruptions Heartbeat LED, product initialization Page Connectivity LED, product operating Connectivity LED Connectivity LED, product initialization Page Page HP Jetdirect LEDs Network Settings Jetdirect Menu Engine diagnostics Page Disable cartridge check ●Troubleshooting ●Diagnostic Tests Disable Cartridge Check Exit Troubleshooting Engine test button Paper path test Paper path sensors test Paper Path Sensors Start Test Manual sensor test Registration sensor Fuser loop sensors Fuser output sensor Duplexer refeed sensor Output-binfull sensor Fuser pressure-releasesensor ITB alienation sensor Page Right- and front-doorinterlock switches Page Tray/bin manual sensor test Manual Tray/Bin Sensor Test Tray 1 paper sensor Tray 2 paper sensor Tray 2 cassette sensor Tray 2 cassette lifter sensor Tray 3 empty sensor Tray 3 media feed sensor Tray 3 stack surface sensor Print/stop test Component tests Page Block diagrams Page Location of connectors Paper feeder driver PCA Plug/jack locations Locations of major components Page Page Page Page Page Page 1 x 500 paper feeder chart timing General Circuit diagrams Page Print quality troubleshooting pages Page Page Print quality assessment page Page Cleaning page Configuration page Page HP embedded Jetdirect page Finding important information on the configuration pages Color band test Repetitive defects ruler Calibrate the product Sign In menu Retrieve Job From USB menu Retrieve Job From Device Memory menu Page Page Page Supplies menu Page Page Page Page Page Page Page Trays menu Page Page Page Page Administration menu Page General Settings menu Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Retrieve From USB Settings menu General Print Settings menu Page Page Default Print Options menu Page Page Display Settings menu Manage Supplies menu Page Page Page Page Page Page Manage Trays menu Page Network Settings menu Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Troubleshooting menu Page Page Page Page Page Device Maintenance menu Page Page USB Firmware Upgrade menu To display 10.0X.Y0 Supply memory error Page 10.23.70 Printing past very low 10.XX.34 Used supply in use 10.XX.40 Genuine HP supplies installed 10.XX.41 Unsupported supply in use 10.XX.70 Printing past very low 10.YY.15 Install <supply 10.YY.25 Wrong cartridge in <color> slot 10.YY.35 Incompatible <supply 11.00.YY Internal clock error 13.A3.FF Page 13.D3.DZ 13.WX.EE 13.WX.FF 13.WX.YZ Fuser area jam 13.WX.YZ Fuser wrap jam 13.WX.YZ Jam below control panel 13.WX.YZ Jam in middle right door 13.WX.YZ Jam in right door 13.WX.YZ Jam in Tray 13.WX.YZ Jam in Tray <X 20.00.00 Insufficient memory To continue, press OK 21.00.00 Page too complex 32.1C.XX Page Page Page Page 33.XX.YY 33.XX.YY Used board/disk 41.02.00 Error 41.03.YZ Unexpected size in tray <X 41.05.YZ Unexpected type in tray <X Page 41.07.YZ Error To continue, press OK Page 42.XX.YY 47.WX.YZ Printer calibration error To continue, press OK ◦47.FC.23 49.XX.YY To continue, turn off then on 50.WX.YZ Fuser error To continue, turn off then on Page Page 51.00.YY Error 52.00.XX To continue, turn off then on 54.XX.YY Error 54.0X.0D or 54.0X.0E 55.00.YY DC controller error To continue, turn off then on 55.0X.YY DC controller error To continue, turn off then on 56.00.YY Error To continue, turn off then on 57.00.0Y Error To continue, turn off then on 59.00.YY Error To continue, turn off then on 60.00.0Y Tray <Y> lifting error 62.00.00 No system To continue, turn off then on 70.00.00 Error To continue, turn off then on 81.0X.YY Embedded JetDirect error 98.00.01 Corrupt data in firmware volume 98.00.02 Corrupt data in solutions volume 98.00.03 Corrupt data in configuration volume 98.00.04 Corrupt data in job data volume 99.00.01 Upgrade not performed file is corrupt 99.00.02 Upgrade not performed timeout during receive 99.00.03 Upgrade not performed error writing to disk 99.00.04 Upgrade not performed timeout during receive 99.00.05 Upgrade not performed timeout during receive 99.00.06 Upgrade not performed error reading upgrade 99.00.07 Upgrade not performed error reading upgrade 99.00.08 Upgrade not performed error reading upgrade 99.00.09 Upgrade canceled by user 99.00.10 Upgrade canceled by user 99.00.11 Upgrade canceled by user 99.00.12 Upgrade not performed the file is invalid 99.00.13 Upgrade not performed the file is invalid 99.00.14 Upgrade not performed the file is invalid 99.09.60 Unsupported disk 99.09.61 Unsupported disk 99.09.62 Unknown disk 99.09.63 Incorrect disk 99.09.64 Disk malfunction 99.09.65 Disk data error 99.09.66 No disk data installed 99.09.67 Disk is not bootable please download firmware <Binname> Full Remove all paper from bin <Supply> almost full <Supply> low OR Supplies low <Supply> very low OR Supplies very low <Tray X> lifting [File System] device failure To clear, press OK [File System] file operation failed To clear, press OK [File System] file system is full To clear, press OK [File System] is not initialized [File System] is write protected Accept bad signature Bad optional tray connection Calibration reset pending Canceling Canceling... <jobname Checking engine Checking paper path Chosen personality not available To continue, press OK Cleaning do not grab paper Cleaning Clearing event log Clearing paper path Close front door Close lower right door Close upper right door Creating cleaning page Data received To print last page, press OK EIO <X> disk initializing Event log is empty Expected drive missing HP Secure Hard Drive disabled Incompatible <supply Incompatible supplies Install <supply Install <supply> Close rear door Install Fuser Unit Install supplies Install Transfer Unit Internal disk not functional Internal disk spinning up Load Tray <X>: [Type], [Size] Load Tray <X>: [Type], [Size] To use another tray, press OK Manually feed output stack Then press OK to print second sides Manually feed: [Type], [Size] Manually feed: [Type], [Size] To use another tray, press OK Moving solenoid Moving solenoid and motor No job to cancel Paused Performing Color Band Test Performing Paper Path Test Please wait Printing CMYK samples Printing Color Usage Log Printing Configuration Printing Demo Page Printing Engine Test Printing Event Log Printing File Directory Printing Font List Printing Fuser Test Page Printing Help Page Printing Menu Map Printing PQ Troubleshooting Printing Registration Page Printing RGB Samples Printing Supplies Status Page Printing Usage Page Processing duplex job Do not grab paper until job completes Processing job from tray <X>... Do not grab paper until job completes Processing Processing... copy <X> of <Y Ready Ready <IP Address Remove all print cartridges Remove at least one print cartridge Remove shipping lock from Tray Replace <supply Replace Supplies Restore Factory Settings Restricted from printing in color Rotating <color> motor Rotating motor Size mismatch in Tray <X Sleep mode on Supplies in wrong positions Tray <X> empty: [Type], [Size] Tray <X> open Tray <X> overfilled Troubleshooting Type mismatch Tray <X Unsupported drive installed To continue, press OK Unsupported tray configuration Unsupported USB accessory detected Remove USB accessory USB accessory needs too much power Remove USB and turn off then on USB accessory not functional Used supply installed To continue, press OK OR Used supply in use Wrong cartridge in <color> slot Event log messages Print an event log View an event log Clear an event log Common causes of jams Jam locations Clear jams in Tray Page Clear jams in the output bin area Page Clear jams in the right door Page Page Page Page Clear jams in the lower right door (Tray 3) Jams in the output bin Jams in the fuser and transfer area Page Page Page Jams in the duplex area (duplex models) Jams in Tray 1, Tray 2 and internal paper path Page Jams in Tray Change jam recovery Auto Off ●General Settings ●Jam Recovery Product feeds multiple sheets Paper does not feed automatically Page Select a manual print mode ●Print Quality ●Adjust Paper Types Page Page Image defects table Page Page Page Page Page Set up an auto cleaning page Page Solve direct connect problems Solve network problems Page Service menu ●Service Access Code Your user account does not have permission to access the selected item Page Restore factory-setdefaults Product cold reset Active and repository firmware locations Partial Clean Clean Disk Page Page Page Page Page Page Page Page Embedded Web Server USB storage device (Preboot menu) USB storage device (control-panelmenu) Page 4 Parts and diagrams Replacement parts: Supplies and accessories: Accessories Print cartridges and toner collection unit Memory Customer self repair (CSR) and service kits Page Page Page Page Page Page Page Internal assemblies (1 of 5) Page Internal assemblies (2 of 5) Page Internal assemblies (3 of 5) Page Internal assemblies (4 of 5)

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