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Brother 4750e Intellifax Fax Machine Owners Manual

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    							19 - 10   TROUBLESHOOTING AND ROUTINE MAINTENANCE
    ZleMFC-US-FAX-4750e/5750e-
    DIFFICULTYSUGGESTIONS
    Software Difficulties
    “Unable to write to 
    LPT1” or “LPT1 
    already in use” error 
    message appears.1. Make sure the machine is on (plugged into the 
    AC outlet) and that it is connected directly to the 
    computer using an IEEE-1284 bi-directional 
    parallel cable. The cable must not go through 
    another peripheral device (such as a Zip Drive, 
    External CD-ROM Drive, or Switch box).
    2. Make sure the machine’s LCD screen is not 
    displaying an error message.
    3. Make sure no other device drivers, which also 
    communicate through the parallel port, are running 
    automatically when you boot up the computer 
    (such as, drivers for Zip Drives, External CD-
    ROM Drive, etc…) Suggested areas to check: 
    (Load=, Run= command lines in the win.ini file or 
    the Startup Group)
    4. Check with you computer manufacturer to 
    confirm that the computer’s parallel port 
    settings in the BIOS are set to support a bi-
    directional machine, i.e. (Parallel Port Mode-
    ECP). “MFC is Busy” or 
    “MFC Connect Failure” 
    error message appears.
    MFC Connect Failure If the Brother machine is not connected to your PC 
    and you have loaded the Brother software, the PC 
    will show “MFC Connect Failure” each time you 
    restart Windows
    ®. You can ignore this message or 
    you can turn it off by deselect the AutoLoad 
    PopUp check box in the Brother Control Center 
    chapter. (See 
    How to Turn Off AutoLoad, Page 14-2.)
    Windows
    ® Setup Printing Difficulties
    I cannot print from my 
    application software.Make sure the Windows
    ® printer driver is installed 
    and that you selected it in your application 
    software.
    Sometimes I get the 
    error message OUT OF 
    MEMORY when 
    printing certain 
    documents from 
    Windows
    ®.
    If you are using the supplied Windows® driver, turn 
    the error recover operation on in the Setup dialog 
    box and try again. Reduce the print resolution or 
    reduce the complexity of your document and try 
    again.  
    						
    							TROUBLESHOOTING AND ROUTINE MAINTENANCE   19 - 11
    ZleMFC-US-FAX-4750e/5750e-
    DIFFICULTYSUGGESTIONS
    Paper Handling Difficulties
    The Brother machine 
    does not load paper. The 
    LCD shows CHECK 
    PAPER or PAPER 
    JAM.Check to see if the CHECK PAPER or PAPER 
    JAM message appears on the LCD. If so, the multi-
    purpose sheet feeder may be out of paper or not 
    properly installed. If it is empty, load a new stack 
    of paper into the feeder. If  there is paper in the 
    paper cassette, make sure it is straight. If the paper 
    is curled, you should straighten it.  Sometimes it is 
    helpful to remove the paper, turn the stack over and 
    place it back into the paper cassette.  Reduce the 
    amount of paper in the paper cassette, and then try 
    again. Check the manual mode is not selected in the 
    printer driver.
    How can I load 
    envelopes?You can load envelopes from the manual feed slot. 
    Your application software must be set up to print 
    the envelope size you are using. This is usually 
    done in the Page Setup or Document Setup menu of 
    your software. Refer to your application manual. 
    The machine does not 
    load transparencies.The Outer Chute on your machine may be bent.
    Please straighten the Outer Chute, and then use 
    transparencies again. If the machine still does not 
    load transparencies, call Brother Customer Service 
    to troubleshoot the problem with you.
    Paper Handling Difficulties (Cont.)
    What  paper  can  I  use? You can use plain paper, envelopes, transparencies 
    and labels for laser machines. For information on 
    paper you can use, See 
    Acceptable Paper, page 2-6.
    How can I clear paper 
    jams?See Paper Jam on page 19-4 to 19-5.
    Scanning Difficulty
    TWAIN Errors appear 
    while scanning.Make sure the Brother TWAIN Driver is selected as 
    the primary source. For FAX-5750e in PaperPort
    ®, 
    click File | Select Source, highlight the Brother 
    TWAIN Driver and click Select. 
    						
    							19 - 12   TROUBLESHOOTING AND ROUTINE MAINTENANCE
    ZleMFC-US-FAX-4750e/5750e-
    DIFFICULTYSUGGESTIONS
    Copy Quality Difficulties
    Vertical streaks appear 
    in copies.Sometimes you may see vertical streaks on your 
    copies. Either the scanner or the primary corona 
    wire for printing is dirty. Clean them both.  
    (See pages 19-18 to 19-20)
    Print Quality Difficulties
    Printouts are too dark or 
    too light.Adjust the print conditions by setting the Print Density 
    setting. It has been factory set to the middle position. 
    (See 
    Setting the Print Density, page 5-4.)
    Printed pages contain 
    white stripes.
    White Stripes or
    Faint lmagesYou may fix this by wiping the scanner windows 
    with a clean soft cloth. (See 
    Cleaning the Document 
    Scanner
    , page 19-18 and Replacing the Drum Unit, 
    page 19-23.)  If you still see white stripes or faint 
    images and the LCD shows CHANGE DRUM 
    SOON, replace the drum unit with a new one.
    Check the machine’s environment. Conditions 
    such as humidity and high temperatures may cause 
    this print defect to occur.
    Printed pages are 
    stained with toner or 
    have vertical 
    stripes.
    Dark Stripes or
    Toner StainsClean the machine’s interior and the primary 
    corona wire of the toner cartridge. (
    See Routine 
    Maintenance
    , page 19-18 and Cleaning the Drum 
    Unit, 
    page 19-19.)  Make sure that the tab of the 
    corona wire is at the home position. If after 
    cleaning, you still see dark stripes or toner stains 
    and the LCD shows CHANGE DRUM SOON, 
    replace the drum unit with a new one.
    Printed pages have 
    white in black text and 
    graphic areas.
    White SpotsMake sure that you use paper that meets the 
    specifications. Rough surface or thick media can 
    cause the problem. If you still see white spots and 
    the LCD 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. 
    						
    							TROUBLESHOOTING AND ROUTINE MAINTENANCE   19 - 13
    ZleMFC-US-FAX-4750e/5750e-
    DIFFICULTYSUGGESTIONS
    Print Quality Difficulties (
    CONTINUED)
    Toner scatters and stains 
    the printed page.
    Scattering TonerAdjust the print conditions by setting the Print 
    Density setting. Remove the drum unit and clean 
    the machine’s interior. (See 
    Routine Maintenance, 
    page 19-18, 
    Cleaning the Printer, page 19-18 and 
    Cleaning the Drum Unit, page 19-19.) Make sure 
    that you use paper that meets specifications. (See 
    pages 2-6.) If you still have scattered toner and the 
    LCD shows CHANGE DRUM SOON, replace 
    the drum unit with a new one.
    Check the machine’s environment. Conditions 
    such as humidity and high temperatures may cause 
    this print defect to occur.
    The whole page is 
    printed black.
    Black PageWipe the electric terminals referring to page 19-18. 
    Also, do not use heat-sensitive paper because it 
    will cause this problem. After cleaning, if the 
    printed pages are still black and the LCD shows 
    CHANGE DRUM SOON, replace the drum unit 
    with a new one.
    Nothing is printed on 
    the page.
    White pageMake sure that the toner cartridge is not empty. 
    Wipe the electric terminals. (See 
    Routine 
    Maintenance, page 19-18, Cleaning the Printer, page 
    19-18 and Cleaning the Drum Unit, page 19-19.) 
    Make sure that a torn piece of paper does not 
    remain on the scanner window.
    Printed pages are 
    marked at regular 
    intervals.
    Example of Regular 
    MarksMarks may disappear by themselves. Try copying 
    multiple pages to clear this problem. Marks may 
    occur if the machine has not been used for a long time. 
    A possible cause is that the surface of the drum is 
    scratched. You must then replace the drum unit with 
    a new one.  If the marks do not disappear, it may be 
    that the drum was marked or damaged by excessive 
    exposure to light. In this case, replace the drum unit 
    with a new one. 
    						
    							19 - 14   TROUBLESHOOTING AND ROUTINE MAINTENANCE
    ZleMFC-US-FAX-4750e/5750e-
    DIFFICULTYSUGGESTIONS
    Print Quality Difficulties (
    CONTINUED)
    Printed pages are 
    blurred at the center or 
    at either edge.
    Blurred Page
    Certain environmental conditions such as humidity 
    and high temperatures 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 
    Routine Maintenance, page 19-18, Cleaning the 
    Printer, page 19-18 and Cleaning the Drum Unit, page 19-19.)  If a blurred page occurs after cleaning 
    and the LCD shows CHANGE DRUM SOON, 
    replace the drum unit with a new one.
    Ghost images appear on 
    the printed page.
    Ghost ImagesAdjust the print conditions by setting the Print 
    Density setting, page 5-4.  Make sure you use paper 
    that meets the specifications. Rough surfaces or 
    thick media can cause a ghost image.
    NoteThe drum unit is a consumable item and it is necessary to replace it periodically. 
    						
    							TROUBLESHOOTING AND ROUTINE MAINTENANCE   19 - 15
    ZleMFC-US-FAX-4750e/5750e-
    Packing and Shipping the Machine
    Whenever you transport the machine, use the packing materials that came with 
    your machine.  Also, follow the steps below to pack the machine so it won’t be 
    damaged, which would void the machine’s warranty.
    1Remove the telephone line cord and unplug the machine from the AC outlet.
    2Open the front cover.
    3Remove the drum unit.
    Caution
    Remove the drum unit and toner 
    cartridge assembly.  Leave the toner 
    cartridge installed in the drum unit.
    4Place the drum unit and toner 
    cartridge assembly into the plastic bag 
    and seal the bag.
    5Close the front cover.  Fold down the 
    front output bin extension. Remove 
    the telephone line cord, document 
    tray, document support, handset, and 
    handset cord, and pack them.
    6If Cassette #2 is 
    connected, unplug 
    the modular cable 
    from the modular 
    jack of the Brother 
    machine.  
    						
    							19 - 16   TROUBLESHOOTING AND ROUTINE MAINTENANCE
    ZleMFC-US-FAX-4750e/5750e-
    7If you have the Cassette #2 option, carefully pick up the machine and remove 
    Cassette #2 to pack it separately.
    8Pack additional parts (cord, paper cassette, printed materials) in the carton.
    Caution
    Be sure to take out any optional memory upgrade boards or network cards 
    before packing the machine.
    NoteIf you are returing the machine to Brother as part of the Exchange Service, pack 
    only the machine. Keep all separate parts to use with your “Exchange” machine.
    Cassette #2
    Bottom 
    Layer 
    						
    							TROUBLESHOOTING AND ROUTINE MAINTENANCE   19 - 17
    ZleMFC-US-FAX-4750e/5750e-
    9Close the carton and tape it shut.
    Middle 
    Layer
    Top 
    Layer 
    						
    							19 - 18   TROUBLESHOOTING AND ROUTINE MAINTENANCE
    ZleMFC-US-FAX-4750e/5750e-
    Routine Maintenance
    Keep your machine in optimum condition by cleaning it on a regular basis. It is 
    a good idea to clean the drum unit during this routine. Avoid using thinners or 
    other organic solvents and do not use water.
    Cleaning the Document Scanner
    1Unplug the telephone line, and then the power cord.
    When you reconnect these lines later, connect the power cord first, and then the 
    telephone line. 
    2Lift the control panel cover.
    3Clean the white bar and glass cover 
    under the white bar. 
    Moisten a small, clean, soft, lint-free 
    cloth with isopropyl alcohol and 
    carefully remove dirt from the glass 
    cover and the white bar.
    Cleaning the Printer
    Caution
    Do not use isopropyl alcohol to remove dirt from the control panel.  It may crack the 
    panel.
    Do not use isopropyl alcohol to clean the scanner window.
    Do not touch the scanner window with your finger.
    The drum unit contains toner, so handle it carefully.  If toner scatters and your hands 
    or clothes get dirty, immediately wipe or wash it off with cold water.
    1Open the front cover.
    2Remove the drum unit assembly. 
    						
    							TROUBLESHOOTING AND ROUTINE MAINTENANCE   19 - 19
    ZleMFC-US-FAX-4750e/5750e-
    WARNING
    Just after you have used the machine, some internal parts of the machine are 
    extremely HOT!  When you open the front cover of the machine, never touch 
    the shaded parts as shown in the diagram below.
    3Gently clean the scanner window by wiping with a clean soft dry cloth.  Do not 
    use isopropyl alcohol.
    Cleaning the Drum Unit
    We recommend placing the drum unit on a drop cloth or large disposable paper 
    to avoid spilling and scattering toner.
    1Clean the primary corona wire inside the drum unit by gently sliding the tab 
    from right to left several times.
    2Return the tab and snap it into the Home position ().
    Caution
    If the tab is not at the Home position, printed pages may have vertical stripes.
    HOT!
    Scanner Window
    Home Position (     )
    Ta bCorona Wire 
    						
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