Brother HL-720 manual Toner Sensor Electric Terminal Gears Scanner Window

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

CHAPTER 5 MAINTENANCE

4.Wipe the following gears and electric terminals with cleaning alcohol on a cotton swab. Gently wipe the scanner window and the toner sensor with a soft dry cloth.

Toner Sensor

Electric Terminal

Gears

Gears

Scanner Window

Fig. 5-22 Cleaning the Gears, Electric Terminals,

Scanner Window, and Toner Sensor

!Caution

∙Do not touch the scanner window with your finger.

∙Do not wipe the scanner window with cleaning alcohol (isophorol).

5.Turn the drum unit upside down carefully.

!Caution

Handle the drum unit carefully as it contains toner. If toner scatters and your hands or cloths get dirty, wipe or wash it off with cold water immediately.

✒Note

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

5–13

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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 Sleep Mode Power Save Mode Environment-Friendly Economy Printing ModeEnhanced Memory Management Low Running CostEnvironment 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 ParametersBit BitsDTR only OffNone 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 Setting Up the Printer for Windows Setting Up the Printer HardwareQuestion RecommendationSetting 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