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  1. #1
    Senior Tech 100+ Posts giddyupngo's Avatar
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    Unhappy C-4501 code on a bizhub 284e

    Hi everyone,
    Brand new machine, set up in our shop, delivered to customer. Still at around 100 copies. Machine starts up okay to ready state. If you print internal, or make a copy, it errors out, C4501 every time. It will run a paper passage test, but anything engaging the laser errors out. The code is a Laser SOS (start of scan) error.

    1. Swapped out Laser/PH Unit
    2. Re-flashed G9 firmware
    3. Swapped out PRCB (Printer Control Board)
    4. Swapped out MFP Board
    5. Upgraded to J6 Firmware

    None of the above steps made any difference, also did trouble reset multiple times. The Service manual only mentions the Laser Unit and the PRCB as possible causes of the problem, The MFPB was a reach. Still no solution. Anyone have any experience with this?
    Thanks in advance.

  2. #2
    Service Manager 1,000+ Posts
    C-4501 code on a bizhub 284e


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    Re: C-4501 code on a bizhub 284e

    what did konica say?

  3. #3
    RTFM!! 5,000+ Posts allan's Avatar
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    Re: C-4501 code on a bizhub 284e

    Harnas and ribbon cable? Do you get any P-Codes?
    Last edited by allan; 01-17-2015 at 05:47 AM.

  4. #4
    Service Manager 5,000+ Posts
    C-4501 code on a bizhub 284e

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    Re: C-4501 code on a bizhub 284e

    Have you tried system reset initialization in service mode?
    Let us eat, drink, and be merry, because tomorrow we may die!

    For all your firmware & service manual needs please visit us at:

    www.copierfirmware.co.uk - www.printerfirmware.co.uk




  5. #5
    Senior Tech 100+ Posts giddyupngo's Avatar
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    Re: C-4501 code on a bizhub 284e

    Thanks for the replies
    JR2 - Konica recommended all the steps I took, I am calling them in a few minutes to find out what to do next.
    Allan - No P-codes, didn't replace harness or ribbon cable yet, but good idea.
    Copier Tech - Didn't try system reset initialization in service mode, thanks for the suggestion.

    I will update thread later.
    Thanks.

  6. #6
    Senior Tech 100+ Posts giddyupngo's Avatar
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    Re: C-4501 code on a bizhub 284e

    Quick update,
    Konica is recommending replacement of the PH unit/laser unit control board. A small board on the left side near the laser unit. Will update once we get it and install.
    Thanks,

  7. #7
    Senior Tech 100+ Posts giddyupngo's Avatar
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    Re: C-4501 code on a bizhub 284e

    I forgot to post the resolution.
    No solution ever found, entire engine warrantied out and replaced. However, we kept the ADF, and that caused the new machine to code out. Turns out the ADF Dual Scan board was faulty, after replacing it machine was fixed. I don't know if the ADF Dual Scan board contributed to the C-4501 code, but if you get a C-4501 code you cannot resolve, maybe try disconnecting the ADF, could be a connection.
    Thanks

  8. #8
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: C-4501 code on a bizhub 284e

    Today I installed C258. I was doing setup but machine threw C-4501 at some point. I quick look at CTN brings this topic although model is different and saved my time.
    I had luck to disconnect DF from machine and after doing trouble reset error cleared and I was able to redo DF setup.
    FYI according to manual C4501 is Laser malfunction and Relevant electrical parts are PH unit, MFP board (MFPB).

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    Blessed are they who can laugh at themselves, for they shall never cease to be amused.

    I don't reply to private messages from end users.

  9. #9
    Service Manager 1,000+ Posts
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    Re: C-4501 code on a bizhub 284e

    Ive had to exchange 3 C754es for the exact error..Nothing SSD recommends fixes it..If I get another one I'll try the ADF test. Possibly the ADF is bringing down a 24 or 5vdc power supply..E

  10. #10
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    Re: C-4501 code on a bizhub 284e

    Quote Originally Posted by giddyupngo View Post
    Hi everyone,
    Brand new machine, set up in our shop, delivered to customer. Still at around 100 copies. Machine starts up okay to ready state. If you print internal, or make a copy, it errors out, C4501 every time. It will run a paper passage test, but anything engaging the laser errors out. The code is a Laser SOS (start of scan) error.

    1. Swapped out Laser/PH Unit
    2. Re-flashed G9 firmware
    3. Swapped out PRCB (Printer Control Board)
    4. Swapped out MFP Board
    5. Upgraded to J6 Firmware

    None of the above steps made any difference, also did trouble reset multiple times. The Service manual only mentions the Laser Unit and the PRCB as possible causes of the problem, The MFPB was a reach. Still no solution. Anyone have any experience with this?
    Thanks in advance.

    Trensfer belt sensor Clean ?? Its 3 sensor !

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