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How to Troubleshoot a Phaser 840

    Vertical or Horizontal Lines in Printouts

    • 1). Use the arrow keys to move through the printer's menu on the display. Press "Select" when you highlight the "Menu" option.

    • 2). Press the arrow keys until you highlight "Troubleshooting," then press "Select." Use the arrow keys to highlight "Print Test Page," then press "Select." Wait for the page to print.

    • 3). Press the arrow keys to highlight "Eliminate Light Stripes" and press "Select" if you see the lines on the test page. Print another test page by selecting "Menu," "Troubleshooting," "Print Test Page."

    • 4). Examine the test page to see if the problem still exists. If lines are still on the test page, select "Eliminate Light Stripes" again to clean the printer's print head a second time.

    • 5). Run the printer's print head cleaning utility up to three times, then allow the printer to sit for four hours if the problem continues. Run the print head cleaning utility up to three times after the printer has rested.

    Ink Smears on Top or Bottom of Printouts

    • 1). Press the arrow buttons on the printer's control panel to highlight "Menu," then press "Select." Use the arrows to highlight "Troubleshooting" and press "Select."

    • 2). Highlight "Remove Ink Smears" and press "Select" to begin the printer's self-cleaning process. If you still see smears on the printouts after running the self-cleaning utility, clean the printer manually.

    • 3). Press down on the blue plastic lever located on the right side of the front of the printer. Fold open the top cover located just above the printer's control panel.

    • 4). Clean the paper rollers with a cloth soaked in rubbing alcohol, turning the rollers completely by rotating the blue wheel. Clean the blue exit fingers on the printer with a dry cotton swab, then close the cover.

    • 5). Fold down the printer's front cover and pull out the maintenance drawer to remove it from the machine. Clean the rollers with a cloth soaked in rubbing alcohol, using the blue wheel to rotate the rollers completely. Slide the maintenance drawer back into place and close the front cover.

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