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IBM 4019 print quality issues

Discussion in 'Laser Printers -Everything-' started by sdowney1, Apr 11, 2018.

  1. Apr 11, 2018
    sdowney1

    sdowney1 Print Lurker

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    Printer Model:
    ibm4019 hp 4000TN
    This is an old laser I decided to work on.
    I put in a new toner cartridge which has the drum inside.
    Has the laser in the top cover.
    Fuser is separate in the base.

    The problem is poor faded text, some faded some ok, also has artifacts with even spacing that appear anywhere on the page and the artifact is always the same distance apart.
    So what does it need?

    I included pictures in a scanned pdf of the printout about 5 pages worth.
     

    Attached Files:

  2. Apr 13, 2018
    sdowney1

    sdowney1 Print Lurker

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    Printer Model:
    ibm4019 hp 4000TN
    I determined the fusor is ok. Simply open printer top while it is printing a page, before the text enters the fusor, it is faded in places.
    I also determined the corona transfer wire is ok, I entirely disassembled that thing and verified it is functional.

    That leaves the toner cartridge which was new old stock ( and it has the drum). The HV and power supply to the cartridge and corona wires, and the laser scanner. Printer has no error codes.

    Right now I am giving up.
     

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