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  • Information
    Information regarding recent vulnerabilities

    HP is aware of the recent vulnerabilities commonly referred to as "Spectre" and "Meltdown". HP has published a security bulletin with patches for these issues and a list of impacted systems. We will continue to update the bulletin as more information becomes available and encourage customers to check the bulletin frequently.

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HP LaserJet 2300 Series Printer - 38 mm, 44 mm, 47 mm, 63 mm, 75 mm, 95 mm Print Quality (PQ) Repetitive Defects

Introduction
A print quality (PQ) defect appears on a printed page at the following intervals, see Figure 1 below. Repetitive print defects are usually caused by a specific roller in the printer or the print cartridge. Use the figure below to isolate the cause of repetitive print defects. Align the first occurrence of the defect with the top of the ruler (at the top or bottom of the misprinted page), and measure to the next occurrence of the defect to determine the roller in question.
Figure : HP LaserJet 2300 Repetitive defect ruler
38 mm defect
For 38 mm defects, perform the following troubleshooting steps:
  1. Verify that the defect consistently occurs on all print jobs.
  2. Verify that the media is within specifications.
  3. Check the print cartridge to see if it has been disassembled or refilled.
      note:
    Non-HP print cartridges can cause many types of image-formation defects
  4. If the defect cannot be cleared, replace the print cartridge since a 38 mm print defect is consistent with a damaged or defective primary charging roller. This is an internal roller inside the print cartridge. It cannot be cleaned or replaced separately.
44 mm defect
For 44 mm defects, perform the following troubleshooting steps:
  1. Verify that the defect consistently occurs on all print jobs.
  2. Verify that the media is within specifications.
  3. Check the transfer roller for any media jams or finger prints. See the HP LaserJet 2300 printer - User Guide for more information regarding the transfer roller. Click here to view/download the guide.
  4. If the defect cannot be cleared, replace the transfer roller since a 44 mm print defect is consistent with a damaged or defective transfer roller.
47mm defect
  1. Verify that the defect consistently occurs on all print jobs.
  2. Verify that the media is within specifications.
  3. Check the print cartridge to see if it has been disassembled or refilled.
      note:
    Non-HP print cartridges can cause many types of image-formation defects
  4. If the defect cannot be cleared, replace the print cartridge since a 47 mm print defect is consistent with a damaged or defective developing roller. This is an internal roller inside the print cartridge. It cannot be cleaned or replaced separately.
63 mm defect
For 63 mm defects, perform the following troubleshooting steps:
  1. Check the printer for any jammed media, particularly in the fusing area.
  2. Verify that the media being used is within specifications.
  3. If the defect does not clear, replace the fuser since a 63 mm print defect is consistent with a damaged or defective pressure roller in the fuser.
75 mm defect
For 75 mm defects, perform the following troubleshooting steps:
  1. Check the printer for any jammed media, particularly in the fusing area.
  2. Verify that the media being used is within specifications.
  3. If the defect does not clear, replace the fuser since a 75 mm print defect is consistent with a damaged or defective fuser film in the fuser.
95 mm defect
For 95 mm defects, perform the following troubleshooting steps:
  1. Verify that the defect consistently occurs on all print jobs.
  2. Verify that the media is within specifications.
  3. Check the print cartridge to see if it has been disassembled or refilled.
      note:
    Non-HP print cartridges can cause many types of image-formation defects
  4. Check the surface of the photosensitive drum in the cartridge to see if it has been damaged or scratched. Touching the drum contaminates the photosensitive surface, which can cause spotting and defects during printing.
  5. If the defect cannot be cleared, replace the print cartridge since a 95 mm print defect is consistent with a damaged or defective photosensitive drum in the print cartridge.

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