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HP Color LaserJet M552, M553, M554, M555, MFP M577, MFP M578, Managed E55040, and Managed MFP E57540 - Removal and replacement: Toner collection unit (TCU)

Learn about removing and replacing the toner collection unit (TCU).

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

B5L37-67901

Toner collection unit (TCU) 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

No post service test is available for this assembly.

Remove the toner collection unit (TCU)

Follow these steps to remove the toner collection unit (TCU).

Note:

The figures in this topic show a SFP printer, However, the procedure is correct for MFP printers.

  1. Open the front door.

    Open the front door

    Open the front door
  2. Open the TCU.

    Note:

    The toner collection hatch cover automatically closes when the TCU is opened.

    Open the TCU

    Open the TCU
  3. Pull the TCU away from the printer at an angle to remove it.

    CAUTION:

    Do not open the toner collection hatch cover when handling the TCU. If toner gets on clothing, wipe it off by using a dry cloth and wash the clothes in cold water. Hot water sets toner into fabric.

    Do not open the toner collection hatch cover

    Remove the TCU

    Remove the TCU

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 TCU

Follow these steps to install the toner collection unit (TCU).

  1. Open the TCU.

    Verify that the toner collection hatch cover is closed

    Verify that the toner collection hatch cover is closed
  2. Position the TCU with the hinges in the slots provided in the printer (callout 1), and then rotate the TCU up and into the closed position.

    Note:

    The toner collection hatch cover automatically opens when the TCU is closed.

    Install the TCU

    Install the TCU
  3. Close the front door.

    Close the front door

    Close the front door

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