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  1. oldirontech

    Color LaserJet 4500 not printing magenta

    I am having a problem getting a Color LaserJet 4500 back on its feet. The initial complaint was about a complete lack of color printing and often no black either. I resolved this by replacing CL2. Unfortunately, it still doesn’t print magenta – only the magenta is missing and it is always...
  2. oldirontech

    Phaser 850 Maintenance Drawer - Oil Roller Lift Pins

    THAT'S A RELIEF! I actually used a soft, damp cloth (designed for cleaning imaging drums) to remove the buildup from around the periphery of the printhead. Afterward, the print quality was even worse than before. I'm pretty sure the c/w/p is bad. The gasket cleaned up nicely and I didn't see any...
  3. oldirontech

    Phaser 850 Maintenance Drawer - Oil Roller Lift Pins

    Thanks (JOS) for the advice. I ended up epoxying a small, hard plastic (had to trim it down to size) cylinder on each lift pin and one problem is solved. The paper no longer sticks to the drum, but the image quality is horrible. There are about a dozen light streaks down the page. Running...
  4. oldirontech

    Phaser 850 Maintenance Drawer - Oil Roller Lift Pins

    A Tektronix 850 arrived at our office for repair and I am not yet familiar with its particular design flaws. Pages stick to the imaging drum, presumably because of insufficient oil transfer. The customer has replaced the oil roller in the maintenance tray. I have confirmed the proper operation...

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