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HP Color LaserJet M553, M555, Managed E55040 - Removal and replacement: Control panel (M553x/M555/E55040)

This document provides the procedures to remove and replace the control panel.

Mean time to repair: 10 minutes

Service level: Basic

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.

Use the table below to identify the correct part number for your printer. To order the part, go to www.hp.com/buy/parts.

Part information

Part number

Part description

B5L24-67903

Control panel (M553x/E55040dw/E55040dn)

K0Q15-67904

Kit - control panel 4.3 inch CLJ M555

Required tools

  • Reversible small, flat-blade screwdriver and #2 Phillips screwdriver (included with the control panel)

After performing service

Turn the printer power on

  • Connect the power cable.

  • Use the power switch to turn the power on.

Post service test

The printer includes a diagnostic test mode for the control panel. For more information, see the control panel checks section of the printer troubleshooting manual.

Remove the control panel (M553x/M555/E55040)

Follow these steps to remove the control panel.

Note:

This procedure is for the M553x/M555/E55040 printers only.

M555 models: Removing the control panel is similar to the procedure below. For the M555, a flat cable connects the control panel to the formatter.

  1. Tilt the control panel up.

    Tilt the control panel up

    Tilt the control panel up
  2. Use the small flat-blade screwdriver supplied in this kit to release the control-panel screws cover tabs.

    Tip:

    The screwdriver has a reversible shaft. Simply pull the shaft out of the handle, and then reinstall it with the desired end facing out.

    Release the control-panel screws cover tabs

    Release the control-panel screws cover tabs
  3. Rotate the cover up to remove it.

    Remove the cover

    Remove the cover
  4. Use the small Phillips screwdriver supplied in this kit to remove two screws (callout 1).

    Important:

    Store the screws in a secure place where they cannot fall down into the printer.

    Tip:

    The screwdriver has a reversible shaft. Simply pull the shaft out of the handle, and then reinstall it with the desired end facing out.

    Remove two screws

    Remove two screws
  5. Rotate the control-panel base toward the front of the printer.

    Rotate the control-panel base up

    Rotate the control-panel base up
  6. Slightly slide the control-panel base toward the rear of the printer (callout 1) to release it, and then turn the control panel over (callout 2) to access the bottom side.

    CAUTION:

    The control panel is still attached to the printer. Do not attempt to completely remove the control panel.

    Turn the control panel over

    Turn the control panel over
  7. Disconnect one USB cable (callout 1), one connector (callout 2), and then remove the control panel.

    Note:

    M555 only: Disconnect one flat cable (not shown), and then remove the control panel.

    Disconnect two connectors

    Disconnect two connectors

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 assembly

Follow these steps to install the control-panel assembly.

Note:

The figures in this procedure show the M553x printer. The M555 control panel uses a flat cable to connect to the formatter. However, installing the control panel is similar to the following procedure.

  1. Place the control panel on the printer as shown.

    Place the control panel on the product

    Place the control panel on the printer
  2. Connect one USB cable (callout 1), and one connector (callout 2).

    Note:

    M555 only: Connect one flat cable (not shown).

    Tip:

    Take note of the location of the two mounting tabs (callout 3) on the control-panel assembly.

    Connect two connectors

    Connect two connectors
  3. Turn the control panel over, and then position the front edge tabs (callout 1) in the slots in the top cover.

    Turn the control panel over

    Turn the control panel over
  4. Rotate the control-panel base down onto the printer.

    Rotate the control-panel base down

    Rotate the control-panel base down
  5. Use the small Phillips screwdriver supplied in this kit to install two screws (callout 1).

    Tip:

    The screwdriver has a reversible shaft. Simply pull the shaft out of the handle, and then reinstall it with the desired end facing out.

    Install two screws

    Install two screws
  6. Position the screw cover mounting feet into the slots in the top cover (callout 1), and then rotate the cover down (callout 2) to install it.

    Note:

    Press down on the cover firmly to make sure that the tabs on the cover (callout 3) snap into place.

    Install the cover

    Install the cover

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