Brother HL-720 manual Data Toner Lamp, Drum Lamp, Alarm Lamp

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English: HL-YL User’s Guide, Chapter 3

USER’S GUIDE

Data (Toner) Lamp

The Data lamp indicates the current status of the print data process.

Lamp

Printer status

Off

The printer has no print data.

 

 

 

Blinking

The printer is receiving data from the computer or

❍↔●

the printer is processing data in memory.

 

 

 

On

Print data remains in the printer memory. If the

Data lamp is on for a long period of time and nothing has printed, you need to press the switch

to print the remaining data.

This lamp also works as the Toner lamp with the Alarm lamp. They blink simultaneously to indicate a toner error. See “REPLACING THE TONER CARTRIDGE” in Chapter 5 and “Operator Calls” in Chapter 6.

Drum Lamp

The Drum lamp indicates the drum unit is nearly at the end of its life.

Lamp

Printer status

Off

The drum unit can be used.

 

 

 

On

The drum unit is nearly at the end of its life.

Installing a new drum unit turns off this lamp. See “REPLACING THE DRUM UNIT” in Chapter 5.

Alarm Lamp

The Alarm lamp blinks to indicate a printer error status such as “Cover Open” and “Memory Full.” If any other error occurs, the printer indicates the error by blinking the Alarm lamp with another lamp or by printing an error report.

Note

The Ready, Data and Drum lamps are used to indicate printer errors with the Alarm lamp. See “ALARM INDICATIONS AT A GLANCE” in Chapter 6 and take corrective action for the error.

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Contents Please read this manual thoroughly before using the printer Brother Laser PrinterShipment of the Printer Laser Printer HL-700 Series User’s Guide Trademarks Compilation and Publication NoticeDefinitions of Warnings, Cautions, and Notes To Use the Printer SafelyTable of Contents Maintenance Index-1Regulations Industry Canada Compliance Statement For Canada OnlyRadio 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 Finding Out How to Use the Printer About the GuidebooksAbout Your Printer Printer Overview Paper SupportVersatile Paper Handling FeaturesDpi Resolution and 6 ppm Printing Speed USER’S Guide Environment-Friendly Economy Printing Mode Sleep Mode Power Save 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 Loading Paper into the Feeder Opening the Feeder Loading Paper or Envelopes in 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 Output Tray and Paper Support Wire Opening the Output Tray Extending the Extension Support WireLamps and Switch Ready Paper LampDrum Lamp Alarm LampData Toner Lamp Other Control Features SwitchTest Print Mode Lamp Lit Choice FunctionChapter Options Selecting the RS-422A Apple or RS-232C IBM Serial InterfaceSetting the Serial Interface Parameters Selecting the RS-422A Apple Or RS-232C IBM Serial InterfaceBits BitDTR only OffConnecting the Serial Interface Cable NoneOptions Memory Board Chapter Maintenance Replacing the Toner CartridgeRemoving the Drum Unit Turning the Lever to Close the Shutter Removing the Old Toner Cartridge Installing the Toner Cartridge Into the Drum Unit Replacing the Drum Unit Drum Unit Nearly at the End of its Life10 Removing the Drum Unit ∙ Do not remove the starter sheet 12 Removing the Toner Cartridge15 Installing the Drum Unit Adjusting the Print Density 17 Adjusting the Print Density DialCleaning the Printer Cleaning the Printer ExteriorCleaning the Printer Interior and Drum Unit 20 Turning off the Switch and UnpluggingToner Sensor Electric Terminal Gears Scanner Window 23 Cleaning the Primary Corona Wire 24 Removing the Drum Unit Assembly RE-PACKING the Printer25 Placing the Drum Unit in the Plastic Bag Alarm Indications AT a Glance Operator CallsUSER’S Guide Troubleshooting Service Calls NV-RAMPaper Jams Locating Paper Jam PositionDo Not Pull the Jammed Paper from the Output Tray Paper Jam near the Drum Unit Setting Up the Printer Hardware Setting Up the Printer for WindowsQuestion RecommendationSetting Up the Printer for DOS For HL-730 series Only Paper Handling Printing Print Quality White Stripes or Faint ImagesToner scatters and stains the printed Printed pages are blurred at the center or either edge Printer Specifications Appendix aFunctions Electrical and Mechanical Parallel Interface Specifications Fig. A-1 Parallel Interface Cable Resident Fonts For HL-730 series Only Symbol SETS/CHARACTER Sets For HL-730 series Only IBM mode Epson mode HP modeHP 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