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Thread: CANON IR7105

  1. #1
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    Angry CANON IR7105

    I HAVE A PROBLEM WITH COPY. THE WORDS IN THE TEXT ARE NOT SO BLACK. IT IS LIKE MORE GRAY.
    PRIMARY CORONA, DEVELOPING ASSEMBLY, TRANSFER CORONA, PRETRANSFER CORONA THIS STUFF ARE ALL NEW. DRUM UNIT HAVE 5M. COPY.
    ANY SUGGESTIONS??????

    ivc


  2. #2
    Field Supervisor 500+ Posts tinnyjay's Avatar
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    Quote Originally Posted by ivc View Post
    I HAVE A PROBLEM WITH COPY. THE WORDS IN THE TEXT ARE NOT SO BLACK. IT IS LIKE MORE GRAY.
    PRIMARY CORONA, DEVELOPING ASSEMBLY, TRANSFER CORONA, PRETRANSFER CORONA THIS STUFF ARE ALL NEW. DRUM UNIT HAVE 5M. COPY.
    ANY SUGGESTIONS??????

    ivc
    I would start with Developer Assembly and toner.

    1-Remove Developer Assembly and check the magnetic roller if its surface is filled with toner.
    If no,check the blade closed to magnetic roller on the developer assembly.
    Is it to close to magnetic roller?
    If yes,it dont let the toner to fill magnetic roller surface with toner,so you must move the blade 1-2 mm from the magnetic roller and its done.

    2-If you use non-genuine toner,vacuum Developer Assembly and install genuine toner cartidge.

    This is from my experience

    "Who loves the roses,must also bear thumbs"

  3. #3
    Senior Tech 100+ Posts
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    I solved same problem changing the laser Unit.....
    Before, Check the HVT PCB and make adjust with microsws on board....


  4. #4
    Technician 250+ Posts
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    Sounds like the laser to me, check your settings. You can try to adjust laser power to see if it makes a difference. (if it works you still need a laser as it won't last) If you replaced all those units, then it is most likely the laser. I have only seen one developer unit go bad and the machine had 14 million on it.


  5. #5
    Indentured Servant 500+ Posts D_L_P's Avatar
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    I've had some luck changing this setting in service mode. Be warned it will suck more toner but the print shop in my territory loves the solid black they get.

    COPIER->OPTION->BODY->DEV-SLOW. SET TO 1


  6. #6
    Service Manager 10,000+ Posts
    CANON IR7105

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    Quote Originally Posted by ivc View Post
    I HAVE A PROBLEM WITH COPY. THE WORDS IN THE TEXT ARE NOT SO BLACK. IT IS LIKE MORE GRAY.
    PRIMARY CORONA, DEVELOPING ASSEMBLY, TRANSFER CORONA, PRETRANSFER CORONA THIS STUFF ARE ALL NEW. DRUM UNIT HAVE 5M. COPY.
    ANY SUGGESTIONS??????

    ivc
    Check visually to make sure that blanking lamps are coming on. You should see a red glow next to primary corona, and don't forget to cheat the laser shutter when looking or else it will generate an E110 . The DC controller sends 24v dc to turn on lamps. You should also not read any continuity when ohming lamps at connector. If you do read continuity most likely the short also took out DC controller and you will have to replace them both at the same time.



    Make Copies and Prints with Potential control off / check for improvement in the copy quality.
    if not improved>>>>
    With Potential Control off, try to Adjust Laser power,if no effect>
    replace >>>

    Laser Unit
    Laser Scanner Assembly is
    FM2-5449-010

    **Knowledge is time consuming, exhausting and costly for a trained Tech.**

  7. #7
    East Coast Imaging 2,500+ Posts
    CANON IR7105

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    Light gray or mirror images , Double repeat of Image, E110-xxxx. Are all symptoms of a laser unit going bad.

    CHECK DRUM SURFACE POTENTIALS
    The measured and target values (VL1M and VL1T) (VDM and VDT) in DPOT, SERVICE MODE>COPIER>DPOT. VL1T should be around 67 / 70. However, if VL1M is 300 or higher, that laser unit is shot. If your authorized canon dealer HYTEC will fix them for free.

    Good fix.

    Canon Copier Repair Service. Sales, Parts & Toner. NYC/NJ area. Contact:East Coast Imaging Solutions,LLC

  8. #8
    Trusted Tech 50+ Posts
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    Make Copies and Prints with Potential control off / check for improvement in the copy quality.
    if not improved>>>>
    With Potential Control off, try to Adjust Laser power,if no effect>
    replace >>>

    Laser Unit
    Laser Scanner Assembly is
    FM2-5449-010[/QUOTE]

    Teckat :
    Adjusting Laser power can be done in service mode? How?

    Thanks.


  9. #9
    East Coast Imaging 2,500+ Posts
    CANON IR7105

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    Copier>Adjust>Laser.

    Canon Copier Repair Service. Sales, Parts & Toner. NYC/NJ area. Contact:East Coast Imaging Solutions,LLC

  10. #10
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    Quote Originally Posted by SCREWTAPE View Post
    Copier>Adjust>Laser.
    Thanks.


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