Brother HL-720 manual Removing the Drum Unit

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English: HL-YL User’s Guide, Chapter 5

CHAPTER 5 MAINTENANCE

Follow these steps to replace the drum unit:

1.Turn off the power switch.

2.Close the output tray and open the top cover. Remove the old drum unit.

Fig. 5-10 Removing the Drum Unit

Warning

After you have just used the printer, some internal parts of the printer are extremely hot. When you open the top cover of the printer, never touch the shaded parts shown in the following illustration.

High Temperature

Fig. 5-11 Inside the Printer

3.Remove the toner cartridge from the drum unit and keep it in a safe place. For more information, see “REPLACING THE T ONER CARTRIDGE” in this chapter.

✒Note

∙Discard the used drum unit according to local regulations. If you are not sure of them, consult your local dealer/retailer. Be sure to seal up the drum unit tightly so that toner powder does not spill out of the unit. Do not discard used drum units together with domestic rubbish.

∙It is recommended to put the drum unit on a piece of disposable paper or cloth in case of accidental toner spill or scatter.

5–7

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Contents Brother Laser Printer Please read this manual thoroughly before using the printerShipment of the Printer Laser Printer HL-700 Series User’s Guide Compilation and Publication Notice TrademarksTo Use the Printer Safely Definitions of Warnings, Cautions, and NotesTable of Contents Index-1 MaintenanceIndustry Canada Compliance Statement For Canada Only RegulationsRadio Interference 220-240 V Model Only Declaration of Conformity For Europe Geräuschemission / Acoustic Noise Emission For Germany Only Important Wiring Information For U.K. only About the Guidebooks Finding Out How to Use the PrinterPrinter Overview Paper Support About Your PrinterVersatile Paper Handling FeaturesDpi Resolution and 6 ppm Printing Speed USER’S Guide Low Running Cost Environment-Friendly Economy Printing ModeSleep Mode Power Save Mode Enhanced Memory ManagementEnvironment Power SupplyOperating and Storage Environment Introduction Blank Paper Size Paper SpecificationsPaper Type Fan the Paper Straighten the Paper Envelopes MULTI-PURPOSE Sheet Feeder Opening the Feeder Loading Paper or Envelopes in the Feeder Loading Paper into the FeederMoving the Paper Guide Closing the Feeder Two Side Printing Manual Duplexing Manual Feed Slot When you load one sheet of paper manuallyWhen you load more than one sheet of paper manually Paper Handling Opening the Output Tray Extending the Extension Support Wire Output Tray and Paper Support WireReady Paper Lamp Lamps and SwitchDrum Lamp Alarm LampData Toner Lamp Switch Other Control FeaturesLamp Lit Choice Function Test Print ModeSelecting the RS-422A Apple or RS-232C IBM Serial Interface Chapter OptionsSelecting the RS-422A Apple Or RS-232C IBM Serial Interface Setting the Serial Interface ParametersOff BitsBit DTR onlyNone Connecting the Serial Interface CableOptions Memory Board Replacing the Toner Cartridge Chapter MaintenanceRemoving the Drum Unit Turning the Lever to Close the Shutter Removing the Old Toner Cartridge Installing the Toner Cartridge Into the Drum Unit Drum Unit Nearly at the End of its Life Replacing the Drum Unit10 Removing the Drum Unit 12 Removing the Toner Cartridge ∙ Do not remove the starter sheet15 Installing the Drum Unit 17 Adjusting the Print Density Dial Adjusting the Print DensityCleaning the Printer Exterior Cleaning the Printer20 Turning off the Switch and Unplugging Cleaning the Printer Interior and Drum UnitToner Sensor Electric Terminal Gears Scanner Window 23 Cleaning the Primary Corona Wire RE-PACKING the Printer 24 Removing the Drum Unit Assembly25 Placing the Drum Unit in the Plastic Bag Operator Calls Alarm Indications AT a GlanceUSER’S Guide Troubleshooting NV-RAM Service CallsLocating Paper Jam Position Paper JamsDo Not Pull the Jammed Paper from the Output Tray Paper Jam near the Drum Unit Recommendation Setting Up the Printer HardwareSetting Up the Printer for Windows QuestionSetting Up the Printer for DOS For HL-730 series Only Paper Handling Printing White Stripes or Faint Images Print QualityToner scatters and stains the printed Printed pages are blurred at the center or either edge Appendix a Printer SpecificationsFunctions Electrical and Mechanical Parallel Interface Specifications Fig. A-1 Parallel Interface Cable Resident Fonts For HL-730 series Only IBM mode Epson mode HP mode Symbol SETS/CHARACTER Sets For HL-730 series OnlyHP LaserJet IIP HP LaserJet IIP, Epson FX-850, IBM Propritner XL USER’S Guide Index Sleep mode Slide switch For USA & Canada Only UL6857001 a