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  1. #1
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    Konica C6000: Gamma correction abnormality


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    Konica C6000: Gamma correction abnormality

    IMG_20180404_090719.jpg

    When Konica C6000 printing is abnormal in color. It is almost impossible to see 4 CMYK colors. Experts advise me on how to deal with this. Thank you.

  2. #2
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    Konica C6000: Gamma correction abnormality


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    Re: Konica C6000: Gamma correction abnormality

    I replaced all new materials like drums, charging, develop, belt... PRCB, PRIPB, Image correction unit, Laser unit...

  3. #3
    Service Manager 1,000+ Posts
    Konica C6000: Gamma correction abnormality

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    Re: Konica C6000: Gamma correction abnormality

    Do you have the service manual?
    In the book it tell you what programs (adjustments) to run after replacing parts.
    Make sure the gamma sensor and registration sensors are clean.
    There is a program called the gamma off set adjustment. I usually run this adjustment
    after replacing the drums, developers and chargers. Keeping the machine clean inside
    will help a lot. Make sure the laser windows are clean. If they are not the output will
    be light in appearance.
    I will post the order of the adjustments later.

    DR

  4. #4
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    Konica C6000: Gamma correction abnormality


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    Re: Konica C6000: Gamma correction abnormality

    i have the service manual.
    "
    4. LIST OF ADJUSTMENT ITEMS
    4.1 Priority for Adjustment/Setting after replacing parts
    Conduct the following adjustment on the items list in this order when replacing the parts on the list. Proper operation/image quality is not
    guaranteed without conducting those adjustment after the parts replacement.
    Note
    When replacing the overall control board (OACB) due to the OACB being damaged, be sure to use the NVRAM board (NRB) that
    was installed on the damaged OACB on the new OACB. Contact the service manager of the authorized distributor if it is
    considered that NRB is also damaged.
    The NVRAM board (NRB) stores various adjustment data, setting data and counter data. Therefore, when replacing the NRB,
    perform all adjustments and settings, and be sure to replace the parts for control correction (Drum, developer, cleaning blade).
    For details, contact the service manager of the authorized distributor.
    When replacing a board due to PB control board (PBCB), SD control board (SDCB), FD control board (FDCB), RU control board
    (RUCB) or FNS control board (FNSCB) being damaged, be sure to use the non-volatile memory (EEPROM) that was installed on
    the damaged control board on the new control board. Install the new EEPROM and perform all adjustments for the PB, SD, FD, RU
    or FS if it is considered that the EEPROM is also damaged.
    ........... "

  5. #5
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    Konica C6000: Gamma correction abnormality


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    Re: Konica C6000: Gamma correction abnormality

    The printer is automatically adjust after error C-4601

  6. #6
    Service Manager 2,500+ Posts
    Konica C6000: Gamma correction abnormality

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    Re: Konica C6000: Gamma correction abnormality

    mandatory adjustments after replacing the laser(s)

    After replacing the writing unit /K, conduct the following item.
    - Cleaning the dust proof glass (Refer to F.5.2.1 - Cleaning the
    dust proof glass
    )
    - Writing initial position memory (Skew initial position memory)
    (Refer to I.5.3.9 Skew Initial Position Memory (Printer Adjustment -
    Writing Initial Pos. Memory)
    )
    - I/O Check Mode (LD1 to LD8 alarm data clear, LD alarm
    measurement) (Refer to I.5.7.1 I/O Check Mode)
    - CD-Mag. Skew Adj. (Refer to I.5.3.13 CD-Mag. Skew Adj.
    (Printer Adjustment)
    )
    - Restart Timing Adjustment (Refer to I.5.3.1 Restart Timing
    Adjustment (Printer Adjustment)
    )
    - Color Registration Auto.Adj. (Refer to I.5.3.10 Color Registration
    Auto.Adj. (Printer Adjustment)
    )
    - Color Registration Manual (Refer to I.5.3.11 Color Registration
    Manual (Printer Adjustment)
    )
    - Gamma Automatic Adjustment (Refer to I.5.4.7 Gamma
    Automatic Adj. (Drum Peculiarity Adjustment)
    )
    - Beam Pitch Adjustment (Refer to I.5.3.14 Beam Pitch Adjustment
    (Printer Adjustment)
    )
    - Moire Adjustment (Refer to I.5.3.15 Moire Adjustment (Printer
    Adjustment)
    )
    8. After replacing the writing units /Y, /M, /C, conduct the following
    item.
    - Cleaning the dust proof glass (Refer to F.5.2.1 - Cleaning the
    dust proof glass
    )
    - Writing initial position memory (Skew initial position memory)
    (Refer to I.5.3.9 Skew Initial Position Memory (Printer Adjustment -
    Writing Initial Pos. Memory)
    )
    - I/O Check Mode (LD1 to LD8 alarm data clear, LD alarm
    measurement) (Refer to I.5.7.1 I/O Check Mode)
    - Color Registration Auto.Adj. (Refer to I.5.3.10 Color Registration
    Auto.Adj. (Printer Adjustment)
    )
    - Color Registration Manual (Refer to I.5.3.11 Color Registration
    Manual (Printer Adjustment)
    )
    Gamma Automatic Adjustment (Refer to I.5.4.7 Gamma
    Automatic Adj. (Drum Peculiarity Adjustment)
    )
    - Beam Pitch Adjustment (Refer to I.5.3.14 Beam Pitch Adjustment
    (Printer Adjustment)
    )
    - Moire Adjustment (Refer to I.5.3.15 Moire Adjustment (Printer
    Adjustment)
    )

    mandatory adjustments after replacing developer...


    - Counter reset of the parts counters No.41, 42 for the developer /
    Y, No.43, 44 for /M, No.45, 46 for /C,and No.47, 48 for /K.
    - Toner Density Sensor Init. (Refer to I.5.4.9 Toner Density Sensor
    Init. (Drum Peculiarity Adjustment)
    )
    - Gamma Automatic Adjustment (Refer to I.5.4.7 Gamma
    Automatic Adj. (Drum Peculiarity Adjustment)
    )
    Printer Gamma Offset Auto. (Refer to I.5.3.23 Printer Gamma
    Offset Auto. (Quality Adjustment - Printer Gamma Adjustment)
    )




    mandatory adjustments after replacing drum(s)



    After replacing the drum cartridge, conduct the following items.
    - Cleaning the dust-proof glass (Refer to F.5.2.1 - Cleaning the
    dust proof glass
    )
    - Counter reset of the parts counter No.21, No.22 for drum
    cartridge /Y, No.23, No.24 for drum unit /M, No.25, No.26 for drum
    unit /C, No.27, No.28 for drum unit /K
    - Color Registration Auto.Adj. (Refer to I.5.3.10 Color Registration
    Auto.Adj. (Printer Adjustment)
    )
    - Color Registration Manual (Refer to I.5.3.11 Color Registration
    Manual (Printer Adjustment)
    )
    - Gamma Automatic Adjustment (Refer to I.5.4.7 Gamma
    Automatic Adj. (Drum Peculiarity Adjustment)
    )

    depending on the firmware there is a selection for running all drum peculiarity adjustments that goes from one screen to the next.
    best to use that.

    bad part is if you didnt run the toner density adjustment immediately after completely vacuuming out the units and refilling them all your adjustments will be for nothing.
    these machines are really finicky if you don't follow the manual to the letter. any skipped or step out of order and its a waste of time and developer.

    good luck!!

  7. #7
    Service Manager 1,000+ Posts
    Konica C6000: Gamma correction abnormality

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    Re: Konica C6000: Gamma correction abnormality

    Thank you for posting that Synthohol, my computer went down and I was unable to access my manuals.
    Synthohol is giving you the best advice. I'm curious, why did you replace the OCB and the write units?
    Generally I would do the PM and the adjustments before I would start replacing boards and write units.
    Even then I would post a question before replacing those parts.

    DR

  8. #8
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    Re: Konica C6000: Gamma correction abnormality

    Does bizhubpress c6000 have pcl drivers

    Sent from my SM-A600F using Tapatalk

  9. #9
    Service Manager 2,500+ Posts
    Konica C6000: Gamma correction abnormality

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    Re: Konica C6000: Gamma correction abnormality

    not that i saw, its PS or XPS.

  10. #10
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    Re: Konica C6000: Gamma correction abnormality

    Quote Originally Posted by Synthohol View Post
    not that i saw, its PS or XPS.
    How do I get xps and does it have abetter print out than ps thanks

    Sent from my SM-A600F using Tapatalk

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