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Thread: bizhub C 550

  1. #1
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    bizhub C 550

    Hi,
    I have Konica Minolta bizhub C 550 with error P-14,but when I change the IU (black) P-14 is gone.
    The real problem is that the copier won't give me Blue light on START button (blinking red).
    Can anybody help me?
    Thanx

  2. #2
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    bizhub C 550

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    Re: bizhub C 550

    1. Call the Service Mode to the screen.
    2. Touch these keys in this order:
    [Machine] → [Skew adjustment] → [Skew adjustment reset].
    3. Touch the start key and execute the skew adjustment reset.
    NOTE
    • After the skew adjustment reset is complete, be sure to perform [Initialize +
    Image Stabilization].

    and then run gradations

    Give that a try. Good luck

  3. #3
    Service Manager 1,000+ Posts
    bizhub C 550


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    Re: bizhub C 550

    There are a few p-14 bulletins for these machines:

    P-14 at power on and after stabilization runs. Performing the color alignment adjustment does not correct the
    problem.
    Solution
    CAUSE: Failed print head relay board.
    SOLUTION: Replace the print head relay board (p/n A00J H003 00).

    ^ There are 3 ICP chips that can blow on those--pretty common in my experience.

    There is a firmware to rectify the p-14 error in my region it is Ver.GC1-22

    Solution ID 106 Solution Usage TAUS0703835EN*
    Description
    P-14at power up possibly with incorrect color registration (P-21 and/orP-22 may also be indicated).
    Solution
    PROBABLE CAUSES:
    1. Soiled/dirty IDC Registration sensor(s).
    Clean IDC Registration sensor/F (IDCS/F) and IDC Registration sensor/R (IDCS/R).

    2. Failing or failed IDC Registration sensors (IDC Registration sensor/Fand IDC Registration sensor/R).
    Replace both IDC Registration sensors (p/n V869 9000 45).

    3. Low level of firmware.
    Update firmware level to most current level available. A printer file only firmware for use after installation of G00-R5 called GC1-22 corrects false P-14 codes
    (see attached documentation).The latest version firmware or system software is available via the Konica Minolta Download Selector. Access the Selector from
    SSD Web Support (CS Expert Support) by clicking on 'Download MSDS, Drivers, Firmware and more'.
    Note :If the problem is not corrected, replace the Imaging Unit (IU).
    CYAN - p/n A0600JF
    MAGENTA - p/n A0600DF
    YELLOW - p/n A06007F
    BLACK - p/n A06003F


    4. Failed print head relay board.
    Note : Code may occur after stabilization runs. Performing the color alignment adjustment does not correct the problem.
    Replace the print head relay board (p/n A00J H003 00). The print head relay board is also referred to as REYB/PH or PWB-J.
    Besure to check Imaging Unit(s) and replace if necessary. Target the Black Imaging Unit which is the most common cause of the P-14 code.

    5. The Color Alignment Adjustment was not performed during setup.
    Note : Code may be indicated after a new setup.
    Perform the Color Alignment Adjustment:
    a. Enter Service mode.
    b. Select Machine.
    c. Select and perform the Color Alignment Adjustment.
    d. Exit Service mode and cycle the power.
    Also, pleasemake sure to check the Imaging Unit(s) and replace if necessary. Target Black Imaging Unit which is the most common cause of the P-14 code.

    6. The Skew adjustment needs to be performed.
    Perform the following skew adjustment procedure:
    a.Enter Tech Rep mode.
    b.Select Machine.
    c.Skew Adjustment.
    d.Perform the procedure as outlined in the Service Manual orrefer tothe attached documentation.

    7. Skew correction values not optimum.
    Set skew correction values to 50 instead of values printed on PH assembly. Check thevalue for Magenta laser which should be 236as printed onlabel on PH
    assembly. Any value for Magenta PH skew lower than 212, excluding 0, allows the unit to function normally.

    8. Incorrect machine setup (new install).
    Use the following Troubleshooting steps when machine is installed, as recommended by Konica Minolta (Japan):
    a.Perform “Skew adjustment reset”.
    b.Perform “Initialize + Image Stabilization”.
    c.Installfirmware version GC1-22. Go to stepdif not recovered.
    d.Change the IU-Black.
    e.Perform “Skew adjustment reset”.
    f. Perform “Initialize + Image Stabilization”. Go to stepgif not recovered.
    g.Confirm whether the values of Skew adjustment and PH unit arethe same.


    Ifthey are the same, go to stepjif not recovered.

    Ifthey aredifferent, input the value of the PH unit in the panel then go to step h.
    h.Perform “Skew adjustment reset”.
    i.Perform “Initialize + Image Stabilization”: Go to stepjif not recovered.
    j.Change the PH unit.
    k. Input the value of the PH unit in the panel.
    l. Perform “Skew adjustment reset”.
    m.Perform “Initialize + Image Stabilization”.

  4. #4
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    Re: bizhub C 550

    thank you ,
    i'll try this tomorrow and post the result
    thank you

  5. #5
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    Re: bizhub C 550

    Quote Originally Posted by Synaux View Post
    There are a few p-14 bulletins for these machines:




    ^ There are 3 ICP chips that can blow on those--pretty common in my experience.

    There is a firmware to rectify the p-14 error in my region it is Ver.GC1-22




    Nothing,i run all that you say,but the START button still blinking RED.
    HELP

  6. #6
    Service Manager 1,000+ Posts
    bizhub C 550


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    Re: bizhub C 550

    Quote Originally Posted by tomislav View Post
    Nothing,i run all that you say,but the START button still blinking RED.
    HELP
    Really? You replaced all the parts listed in the bulletin that I posted and installed that firmware??

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