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PR012

February 1994

Technical Bulletin

SelectPress streaked output

This bulletin is a supplement to the cleaning procedures in the SelectPress User's manual. These instructions are provided to alleviate the occurance of random vertical streaks and splotches of toner on pages printed on a SelectPress, as shown in the sample below. Note that the orientation of the streaks will change depending on the orientation of the paper in the tray. To clean the main charge wire, follow the directions below, being careful not to touch the surface of the photo-sensitive drum. If you have any difficulty with this procedure, please contact GCC Technical support at (781) 276-8620.

Sample of streaks

  1. Turn the printer off. Open the top cover and inner cover. Remove the toner and EP cartridge. DO NOT TOUCH THE SURFACE OF THE GREEN DRUM OR EXPOSE IT TO DIRECT SUNLIGHT.
  2. The main charge wire assembly is located on the side of the EP cartridge that points toward the front of the printer. Grip the right side of the charge wire assembly (silver metal) and pull it away from the EP cartridge in the direction of arrow (1), while squeezing together the two black retaining clips (2) in order to release the charge wire assembly.

    Removal of charge wire

  3. Once the right side is released, slide the charge wire assembly to the left (3) to disengage it from the retaining pin on the left side.
  4. Using the cleaning brush supplied with your printer, gently wipe any toner from the metal grid on the main charge wire assembly. The grid is located on the side that was facing the green drum.

    Cleaning the wire

  5. Turn the main charge wire assembly over and use the felt side of the cleaning tool to clean the charge wire inside the assembly. Be sure to slide the head of the cleaning tool back and forth in each of the four openings.

    Cleaning charge wire

  6. Before reinstalling the main charge wire assembly clean the copper contact on the end of the assembly, using a cloth or alcohol pad.

    Cleaning the contact

  7. Re-attach the charge wire assembly to the EP cartridge, making sure that the left end fits over the retaining pin. Also be sure the clips on the right side are securely seated.
  8. Before installing the EP cartridge into the printer, the grounding contact for the charge wire must be cleaned. This contact is positioned in the opening on the right side of the printer, were the EP is normally installed. This grounding contact is a small metallic pad, mounted flush with the plastic opening. Wipe this contact with a cloth or alcohol pad.

    Side view of SelectPress

  9. Reinstall the EP cartridge and toner cartridge, and close the printer's covers.

This completes the cleaning procedure for the main charge wire. Turn the printer on and print a few pages to confirm that the cleaning was successful. If the print quality has improved but some streaks remain, perform the cleaning procedure again. If the problem persists, contact GCC Technical Support at (781) 276-8620. The main charge wire will need periodic cleaning as part of the printer's regular maintenance. Perform steps 5, 6, and 8 as needed. It is a good idea to perform these cleaning procedures whenever you install a new toner cartridge.

Rev: 4/18/96




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