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HP Color LaserJet MFP M577, MFP M578, MFP E57540 - Removal and replacement: Keyboard (M577/M578/E57540 flow models)

Learn about removing and replacing the keyboard.

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

B5L47-67019

US English Keyboard Kit

B5L47-67020

UK English Keyboard Kit

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 control-panel cover (MFP)

Follow these steps to remove the control-panel cover (MFP).

  1. Open the document feeder (callout 1).

    Note:

    If the control panel is not fully tilted forward, tilt it forward now until it stops (callout 2).

    Open the document feeder

    Open the document feeder
  2. Beginning at the right side of the control-panel cover, carefully release five tabs along the top edge of the cover.

    Note:

    The thin, black plastic cover will separate from the white plastic control-panel base.

    Release five tabs

    Release five tabs
  3. Continue to lift the top edge of the cover away from the printer, and then remove the cover.

    Remove the cover

    Remove the cover

Remove the keyboard (MFP)

Follow these steps to remove the keyboard.

  1. Open the latch (callout 1) to release the keyboard flat cable.

    CAUTION:

    The latch must be opened to release the cable.

    Disconnect the keyboard flat cable

    Disconnect the keyboard flat cable (flow models)
  2. Slide the keyboard tray out until it stops.

    Slide the keyboard out

    Slide the keyboard out
  3. Push up on the keyboard tray to release two tabs on the bottom of the tray, and then slide the tray toward the front of the printer to disengage the tabs.

    Release two tabs

    Release two tabs
  4. Slide the keyboard (callout 1) all of the way out of the printer to remove it.

    Remove the keyboard

    Remove the keyboard

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 control panel (MFP)

Follow these steps to install the keyboard.

  1. Position the flat cable (callout 1) on the keyboard into the keyboard slot (callout 2).

    Install the flat cable through the slot

    Install the flat cable through the slot
  2. Slide the keyboard tray into the slot.

    Note:

    Only slide the tray halfway into the opening. This makes connecting the cable in the next step easier.

    Slide the keyboard into the slot

    Slide the keyboard into the slot
  3. If the flat cable (callout 1) is not in the opening (callout 2) in the control panel base, carefully reach in and thread the flat cable through the opening.

    Check the flat cable

    Check the flat cable
  4. Position the keyboard flat cable in the connector, and then close the connector latch.

    Important:

    Slightly tug on the cable to make sure that it is fully captured in the connector.

    Note:

    When the connector latch is closed and the cable is correctly installed, the white line on the cable is parallel to the connector latch.

    Install the keyboard

    Install the keyboard

Install the control-panel cover (MFP)

Follow these steps to install the control-panel cover (MFP).

  1. Position the control-panel cover on the printer.

    Install the cover

    Install the cover
  2. Beginning at the left side of the control-panel cover, carefully push down along the top edge of the cover to engage five tabs.

    Engage five tabs

    Engage five tabs
  3. Close the document feeder.

    Note:

    Adjust the control panel to the desired angle.

    Close the document feeder

    Close the document feeder

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