If shock jitter occurs at the arrival of paper at the fusing unit, this can cause horizontal black lines to appear 270 mm (10.5”) away from the leading edge of the paper.

Cause:

Shock jitter can occur when the paper reaches the fusing unit after passing through the PTR unit, causing black lines to appear about 270 mm (10.5”) from the leading edge of the paper. This can occur when:

  • Paper longer than 270 mm is used
  • The paper is the first sheet of a print job
  • Using thick paper
  • Printing halftones

  • Please remember that before paper can be used, it requires registration by the operator, especially if adjustments for a different type of paper (custom paper) are used.

Solution:

  1. Is the paper in use shorter than 270 mm (10.5”)?

    Yes

    Go to the next step.

    No

    Go to Step 3.

  2. Print the image on paper shorter than 270 mm. Is the problem resolved?

    Yes

    Finished!

    No

    Use different paper.

  3. In Advanced Settings for the custom paper in use, check the setting for Process Speed Adjustment. (SP1-986-001 to 100: Process Speed Custom Paper 001 to 100)
  4. Is the line speed set at the lowest setting "0" (96 cpm)?.

    Yes

    Use different paper.

    No

    Go to the next step.

  5. Reduce the line speed setting by 1 step.
  6. Print the image. Is the problem resolved?

    Yes

    Finished!

    No

    Repeat Steps 4 to 6.

  7. If the problem persists after adjusting the process line speed, consult the product specialist.