Brother MFC9750 owner manual Humidity conditions may cause this condition to occur

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T R O U B L E S H O O T I N G A N D M A I N T E N A N C E

61

 

 

 

DIFFICULTY

SUGGESTIONS

Printed pages have white spots in

Make sure that you use paper that meets the specifications. Rough

black text and graphic areas.

surface or thick media can cause the problem. If you still see white spots

 

and the display shows CHANGE DRUM SOON, replace the drum unit

 

with a new one. Check the machine’s environment; conditions such as

 

high humidity may cause this situation to occur.

White Spots

 

 

 

Toner scatters and stains the printed

Adjust the print conditions by setting the Print Density function. Clean

page.

the machine’s interior. See “Regular Maintenance” and “Cleaning the

 

Drum Unit” in this chapter. Make sure that you use paper that meets

 

specifications. See chap. 5. If you still have scattered toner and the

 

display shows CHANGE DRUM SOON, replace the drum unit with a

Scattering Toner

new one. Check the machine’s environment; high temperature and high

humidity conditions may cause this condition to occur.

 

 

 

The whole page is printed black.

Clean the machine’s interior and the primary corona wire of the drum

 

unit. Also, do not use heat-sensitive paper as it will cause this problem.

 

After cleaning, if the printed pages are still black or the display shows

 

CHANGE DRUM SOON, replace the drum unit with a new one. The

Black Page

drum unit may be damaged.

 

 

Nothing is printed on the page.

Make sure that the toner cartridge is not empty. Wipe the electric

 

terminals referring to “Regular Maintenance” and “Cleaning the Drum

 

Unit” in this chapter. Make sure that a torn piece of paper does not

 

remain on the scanner window.

White page

 

 

 

Printed pages are marked regular

Markings may disappear by themselves. Try copying at multiple pages

intervals.

to clear this problem. Markings may occur if the machine has not been

 

used for a long time. A possible cause is that the surface of the drum is

 

marked or damaged by excessive exposure to light. In this case, replace

Example of Regular Marking

the drum unit with a new one.

 

 

Printed pages are blurred at the center

Certain environmental conditions such as humidity, high temperatures,

or at either edge.

etc. may cause this condition to occur. Make sure the machine is placed

 

on a flat, horizontal surface. Remove the drum unit with the toner

 

cartridge installed. Try rocking them from side to side. You may clear a

 

blurred page by wiping the scanner windows with a clean soft cloth. (See

Blurred Page

“Regular Maintenance” and “Cleaning the Drum Unit” in this chapter.) If

a blurred page occurs after cleaning and the display shows CHANGE

 

DRUM SOON, replace the drum unit with a new one.

 

 

Ghost images appear on printed page.

Adjust the print conditions by setting the Print Density function. Make

 

sure that you use paper that meets the specifications. Rough surfaces or

 

thick media can cause a ghost image. Make sure that you select the

 

appropriate media type in the printer driver.

Ghost Images

 

 

 

The drum unit is a consumable and it is necessary to replace it periodically, to maintain good printing quality.

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Contents MFC-9750 Page Table of Contents Connecting the Brother MFC-9750 to a PC Using a Parallel Iii Epson ActionLaser 1100/1400 Symbols Used In This Manual UsingThis ManualFinding Information Clear MFC-9750 Control Panel OverviewCopy Table of Options Main Menu Sub Menu Options Factory SettingPacking List AssemblyChoosing a Location Install the Drum Unit Assembly With Toner Cartridge AssemblyRelease the Scanner Lock Lever A P T E R T W O Loading Paper in Multi-purpose Paper Cassette Manual Feed Slot 100% Connect the Power CordSetting the Beeper Volume Initial SetupSetting the Sleep Mode Toner Save Setting the Print DensityChecking the Drum Life Turning On Lower Tray Printing a System Set up ListSetting Paper Size Optional LowerTrayUpper only Lower only Auto Setting Tray UsageA P T E R T W O Inserting Originals for Copying Using the ADF Automatic Document FeederDocuments are Face Down Using the Glass PlattenCopy Contrast Temporary Setting Copy SettingsPaper Size Enlarge Temporary Setting Reduce Temporary SettingCopying a Photograph Copy Mode Temporary SettingBasic Copy Operations Copying OneSorting Multiple Copies Using the ADF Stacking Multiple Copies Using the ADF4in1 Special Copy Options2in1 Poster IfYou Get a Memory Full MessageMaking Special Copies Computer Requirements BeforeYou Install Brother DriversFor Windows 98 Users Only Installing Brother Printer Driver Using USB Cable A P T E R F O U R Select Brusb USB Printer Port and click Next For Windows 95/98 and Windows NT Workstation Version Installing True Type FontsSoftware/Drivers Software for your MFC-9750For Windows A P T E R F O U R If you are using Windows NT Workstation Version Installing MFC-9750 Printer DriverIf you are using Windows 95 or If you are using Windows 3.1 orRemote Printer Console Main Program Installing the Maintenance Utility on MS-DOSHow to Use the MFC withYour DOS Application Software What Does the Remote Printer Console Do?Running the Remote Printer Console Main Program Installing the Remote Printer ConsolePrinter Status Monitor Program Remote Printer Console Program for DOS Special Printing FeaturesWindows Printing Alternate Printer Emulation SupportBi-directional Parallel Interface Printing FromYour PCPaper Cassette Two-Sided Printing Manual Duplexing Loading more than One Sheet of Paper Loading One Sheet of PaperPrinting on Envelopes,Thicker Paper and Card Stock Print Operations from the Control Panel Job CancelFace Down Output Bin Printing a Test Printing a Configuration ListMenu Options Printing the Internal Font ListPrinting PC Data in Hexadecimal Restoring Factory Default SettingsOutput Tray Multi-purpose Paper Cassette and Lower Tray AccessoryAcceptable Paper Manual Feed SlotA P T E R F I V E Optional PaperTray Memory BoardOptional Memory for the Printing A P T E R S I Information Important Safety InstructionsA P T E R S E V E N Atención IEC 825 SpecificationIEC 825 Laser Class For Your SafetyDisconnect device Error Messages TroubleshootingA P T E R E I G H T Document Jam in the Top of the ADF Unit Document Jams and Paper JamsDocument Jam inside the ADF Unit Printer Jam HOT! HOTPaper is Jammed near the Drum Unit Paper is Jammed in the Multi-purpose Paper CassettePaper is Jammed in the Fuser Unit Difficulty Suggestions IfYou Are Having Difficulty withYour MFCData Humidity conditions may cause this condition to occur Brother HL-6/6V/10h/630series/660series/960/1260/ WL-660 Bi-directional Parallel Ports nibble and byte modesHP LaserJet 4 Plus HP LaserJet series II, IID, IIP, IIP+, III, Iiid or IiipNEC SuperScript 610/660 Lexmark WinWriter Epson ActionLaser 1100/1400Cleaning the Scanner Regular MaintenanceGraphics or Text is Missing when the Document is Printed HOT Cleaning the PrinterCleaning the Drum Unit Replacing the Toner Cartridge Toner Empty IndicatorSteps for Replacing Toner Cartridge A P T E R E I G H T Drum Unit Toner Cartridge REMAININGXXX% Drum Life Considerations forYour Brother MachineReplacing the Drum Unit HOT Replace DRUM? 1.YES 2.NO Packing and Shipping the MFC Troubleshooting a N D M a I N T E N a N C E A P T E R E I G H T Printer Specifications SpecificationsElectrical and Environment WeightResident Fonts Parallel Interface SpecificationsHP mode Symbol Sets/Character SetsSpecification S A P T E R N I N E Index Optional Accessories Scanner Lock Lever Accessory List C E S S O R Y L I S T Declaration of Conformity UK/IRE
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