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  1. #1
    Senior Tech 250+ Posts
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    HP m477. Red is faint

    HP m477 the red is faint. Cleaned machine, tried new red drum unit and did color calibration and the red is still very light. Any ideas

  2. #2
    Field Supervisor 500+ Posts Zeldaman's Avatar
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    Re: HP m477. Red is faint

    Hi there!
    Check the contacts for the M-pcdu, clean the ph-glass. If this doesn´t work, the problem comes from the itb-unit, they often fail in this type. To change is a PITA !!!!
    Greetings...

  3. #3
    Junior Member
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    Re: HP m477. Red is faint

    Sometimes mixing aftermarket cartridges with OEM may mis calibrate cartridges.

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