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HP Color LaserJet MFP M577, MFP M578, MFP E57540 - Removal and replacement: White backing (M577/M578/E57540)

Learn about removing and replacing the document feeder white backing.

Before performing service

Turn the printer power off

  • Disconnect the power cable.

    Warning:

    To avoid damage to the printer, turn the printer off, wait 30 seconds, and then remove the power cord before attempting to service the printer.

CAUTION:

To prevent damage to a toner cartridge, do not expose it to light for more than a few minutes. Cover the green imaging drum if the toner cartridge must be removed from the printer for an extended period of time.

If toner gets on the skin or clothing, wipe it off with dry tissue paper and wash in cold water. Hot water sets toner and it might be difficult, or impossible, to remove.

Use the table below to identify the correct part number for your printer, and then go to https://parts.hp.com/hpparts to order the part.

Part information

Part number

Part description

5851-7740

White backing kit with instruction guide

Required tools

  • No special tools are required to remove or install this assembly.

After performing service

Turn the printer power on

  • Connect the power cable.

  • Use the power switch to turn the power on.

Post service test

Print any pages necessary to make sure the printer is functioning correctly.

Remove the white backing (MFP)

Follow these steps to remove the white backing.

  1. Open the document feeder.

    Open the document feeder

    Open the document feeder
  2. Remove the white backing.

    Remove the white backing

    Remove the white backing
  3. One or more of the retention clips (callout 1) that fit in the openings (callout 2) in the document feeder might remain attached to the white backing when it is removed. If this happens, remove the clip from the white backing.

    Note:

    If none of the retention clips remain attached to the white backing, skip the remaining sub-steps in this removal procedure.

    Check the retention clips

    Check the retention clips
  4. If a spring comes off of a retention clip, make sure that it is correctly repositioned on the clip.

    Note:

    If any of the retention clips or springs are damaged, replace them with the clips supplied in the kit.

    Check the retention clip spring

    Check the retention clip spring
  5. Install the clip (callout 1) in the opening (callout 2) in the document feeder.

    Install the retention clip

    Install the retention clip
  6. Press the clip to make sure it is securely installed.

    Press the retention clip

    Press the retention clip

Unpack the replacement assembly

Follow these steps to unpack the replacement assembly.

  1. Dispose of the defective part.

    Note:

    HP recommends responsible disposal of the defective part.

    http://www8.hp.com/us/en/hp-information/environment/product-recycling.html

  2. Unpack the replacement part from the packaging.

    CAUTION:

    Some parts are sensitive to electrostatic discharge (ESD). Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat is not available, touch the sheet-metal chassis to provide a static ground before touching an ESD-sensitive assembly. Protect the ESD-sensitive assemblies by placing them in ESD pouches when they are out of the printer.

    Important:

    Make sure that all of the shipping materials (for example shipping tape) are removed from the replacement part prior to installation.

    Note:

    If the replacement part is a roller or pad, avoid touching the spongy part of it. Skin oils on the roller or pad can cause paper pickup and/or print-quality problems. HP recommends using disposable gloves when handling rollers or pads or washing your hands before touching rollers or pads.

  3. To install an assembly, reverse the removal steps.

    Note:

    When applicable, special installation instructions are provided for an assembly at the end of the removal procedure. Always completely read the removal instructions and follow all special installation instructions.

Install the white backing (MFP)

Follow these steps to install the white backing.

  1. Open the document feeder, and then place the replacement white backing on the flatbed scanner glass, as shown.

    Note:

    Place the corner of the backing that does not have a hook-and-loop fastener in the upper-left corner of the scanner glass.

    Install the white backing

    Install the white backing
  2. Close the document feeder.

    Close the document feeder

    Close the document feeder
  3. Open the document feeder and make sure that the white backing is securely attached.

    Check the white backing

    Check the white backing
  4. Close the document feeder.

    Close the document feeder

    Close the document feeder

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