Resolution Enhancement technology REt, EconoMode | HP 6L Gold

Resolution Enhancement technology (REt)

The Formatter PCA contains circuitry for Resolution Enhancement technology (REt), which modifies the standard video dot data on its way to the DC Controller to produce smoothed black-to-white boundaries. REt is user-adjustable from some software applications. Available settings are On or Off.

EconoMode

The EconoMode setting uses approximately 50 percent less toner than standard mode printing by reducing the dot density. However, EconoMode does not extend toner cartridge component life. EconoMode, which can also be thought of as “draft mode,” is user-selectable through some software applications. The default setting is Off.

Normal mode, medium density

EconoMode, medium density

Figure 5-3EconoMode vs. Normal Mode

Note	EconoMode does not affect print speed or memory usage.

Memory Enhancement technology (MEt)

The Hewlett-Packard Memory Enhancement technology (Met) effectively doubles the standard memory through a variety of font and data compression methods. MEt is only available in PCL mode and is not customer selectable. When using the host-based driver, your PC handles memory management.

Enhanced I/O

The Enhanced I/O feature allows printer memory to be used for storing data received from the host computer. When Enhanced I/O is enabled, you can send more data to your printer in shorter amounts of time, which allows you to return to your application sooner. Enhanced I/O has the following options:

lAuto allows the printer to use Enhanced I/O memory allocation to increase the speed of data transfer from the host computer to the printer, if necessary.

lOff uses the minimum amount of printer memory for storing data sent from the host computer.

Enhanced I/O is only available in PCL mode. When using the host-based driver (HP LaserJet 5L and 6L only), your PC handles memory management.

EN	Formatter system 59

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HP 6L Gold, 6L pro manual Resolution Enhancement technology REt, EconoMode, Memory Enhancement technology MEt, Enhanced I/O

Contents

Printer Page HP LaserJet 5L/6L/6L Gold/6L Pro Printer Trademark Credits Warranty Conventions Page Contents Printer maintenance Appendix a Parts index Appendix B Regulatory information Figures Page Tables Page Product information Chapter contents Printer Features Description Printer featuresPrinter Features Paper capacities and sizes HP LaserJet 6L Gold IdentificationModel and serial 2HP LaserJet 6L model and serial numbers 3HP LaserJet 6L Pro model and serial numbers Performance specifications Category Specification SpecificationsAcoustic emissions 4Front/side views of the printer Product overview 1415 6Back view of the printer Parts Exchange Program Service approachOrdering parts Ordering related documentation HP Customer Care Technical assistance In-country/region support Open Monday through Friday Customer Care options worldwide Argentina Australia Austria HP worldwide sales and service offices India Indonesia Israel Russian Federation Singapore Spain Hardware service during the warranty period WarrantyHardware service after the warranty period Voltage conversions HP LaserJet Toner Cartridge warranty Product information Site requirements Site requirements Install in a well-ventilated, dust-free areaOperating environment Printer space requirements Storage conditions HP C3906A/F Toner CartridgeStoring opened toner cartridges 2Toner cartridge distribution Toner cartridge handling suggestions Site requirements Operating overview Indicator lights Using the Control PanelControl Panel layout Blinking Using the Control Panel Control Panel Button usage Function Lights Action Result Control Panel Button 1Self-test page for HP LaserJet 5L Printing a self-test 2Self-test page for HP LaserJet 6L 3Self-test page for HP LaserJet 6L Pro Continuous self test Printing an engine test To reset the printer Resetting the printer Operating overview Printer maintenance Pressure Roller Life expectancy of consumables Saving toner with EconoMode Toner cartridge life Recycling toner cartridges Refilled toner cartridges Cleaning printer components Cleaning the printerCleaning printer components Component Cleaning Method/Notes Cleaning spilled toner Functional overview Basic printer functions 1Printer functional block diagram 2DC Controller loads DC Controller/power system Print engine control system Power system on DC Controller PCA High voltage power distribution DC power distributionOvercurrent/overvoltage protection SleepMode Formatter system Random access memory RAMRead only memory ROM Parallel interface EconoMode Resolution Enhancement technology REtMemory Enhancement technology MEt Enhanced I/O PJL overview Protect Toner cartridge Image formation system Image fusing Drum cleaningDrum conditioning Image writing 5Simplified paper path Paper feed system SL1 Solenoid and sensors Number Name Description Paper jam detection Printer timing Period Timing Purpose Basic sequence of operation 7General timing diagram HP LaserJet 5L Functional overview Removal and replacement Removal and replacement strategy 1Phillips and PosiDriv screwdrivers Required tools Push it firmly into the printer Installing memory cards Dram Back Cover Covers and doors 3Back Cover removal 2 To reinstall 4EP Door Assembly removal EP Door Assembly 5Memory Door removal Memory Door Main Cover and Paper Input Assembly Procedure for HP LaserJet 6L Pro Procedure for HP LaserJet 5L and 6LInternal assemblies 8Exit Roller removal Exit Roller Assembly 9Delivery Assembly removal 1 Delivery Assembly 10Delivery Assembly removal 2 11Fuser Pressure Plate removal Fuser Pressure Plate 12Fuser Pressure Plate replacement 13Heating Element removal 1 Heating Element 14Heating Element removal 2 15Heating Element removal 3 Pressure Roller Guide removal Pressure Roller Face-Up/Face-Down Lever Face-Up/Face-Down Lever replacement 18Fuser Exit Roller removal Fuser Exit Roller Assembly Paper Exit Sensor Flag 19Paper Exit Sensor Flag replacement Top assemblies Laser/Scanner Assembly 21Solenoid removal 1 Solenoid 22Solenoid removal 2 23Pickup Roller Assembly removal 1 Pickup Roller Assembly 24Pickup Roller Assembly removal 2 25Paper Pickup Roller Assembly replacement inside/front view 26Paper Feed Frame removal 1 Paper Feed Frame 27Paper Feed Frame removal 2 28Paper Feed Frame removal 3 29Paper Feed Frame removal 4 Transfer Roller Guide and Transfer Roller 31Kick Plate removal Kick Plate 32Kick Plate Spring replacement 33Separation Pad removal Separation Pad Place your index finger on the subpad SubpadsPress toward the top of the printer 35Feed Assembly removal 1 Feed Assembly 36Feed Assembly removal 2 37Feed Assembly removal 3 Memory Door Guide Bottom assemblies 39Motor removal Motor 40DC Controller removal 1 DC Controller 41DC Controller removal 2 42DC Controller removal 3 Formatter Board removal Formatter PCA Troubleshooting On following General troubleshooting flowchart General Troubleshooting Flowchart 1Paper path and components Paper path and components 2DC Controller PCA components DC Controller diagram Priority of errors Printer error troubleshooting Paper Jam Printer status messages Sleep Mode Unclearable error Service and error messages Service and error messages PCA Scanner Error. Caused by a Service and error messages 3of Check the toner cartridge Image formation troubleshooting Faded print Image defect examplesStaining Vertical lines Repetitive defects Horizontal stripesVertical white stripes Character voids Black Background scatterDropouts Half of the page Is blank or loss of detail Blank page occasional Curled or wrinkled sheetsBlank pages all pages Dots Dark backgroundDirt on the back Blank spots White horizontal line Faulty registration/skewed imageDistorted image or BD failure Engine test Troubleshooting checksEngine Test Button location Printing an engine test Drum rotation functional check Half self-test functional check High-voltage power supply check Check Action High-voltage power supply check 6Toner cartridge high-voltage connection points 2 Paper surface Paper curl Paper path check Troubleshooting toolsTo override PS204 and SW101 8Repetitive image defect ruler Repetitive image defect ruler 9Main wiring diagram Main wiring diagram Cable pinouts Connector Signal name Remarks Troubleshooting Parts and diagrams Ordering consumables How to use the part lists and diagrams Accessories and supplies Product number Description Accessories and supplies Common fasteners used in the printer Example Description Common hardware 1Major assembly locations Parts diagrams 2Covers and doors Parts diagrams 3Internal components 1 Parts diagrams 4Internal components 2 502 XB1-1300-807CN Screw, PH, M3x8 See Parts diagrams DC Controller/formatter and cables Parts diagrams 7Pickup Roller assembly Parts diagrams Feed assembly Parts diagrams 9Separation Guide assembly Parts diagrams 10Delivery assembly Parts diagrams Parts and diagrams Table A-1 Alphabetical parts list Description Alphabetical parts listParts index Parts index Table A-1 Alphabetical parts list Description Table A-1 Alphabetical parts list Description Table A-1 Alphabetical parts list Description Table A-2 Numerical parts list Description Numerical parts list Numerical parts list Table A-2 Numerical parts list Description Table A-2 Numerical parts list Description Table A-2 Numerical parts list Description Regulatory information Laser Safety U.S Laserturvallisuus Luckan 1 Laserlaite Klass 1 Laser Apparat Laser Statement FinlandVaroitus Varning Material data safety sheet Toner safetyOzone emission Vcci Statement Japan FCC Statement Class B 181 Index 182 ROM/RAM 183 Jedia 184 185 PCL 186 187 188 Wait 189 190 Page C8060-90903