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HP Color LaserJet M855 and HP Color LaserJet Flow MFP M880 - Removal and replacement: Intermediate transfer belt (ITB) and Secondary Transfer Roller

This document provides the procedures to remove and replace the intermediate transfer belt (ITB) and secondary transfer roller for the HP Color LaserJet Enterprise M855 and HP Color LaserJet Enterprise Flow MFP M880.

Mean time to repair: 10 minutes

Service level: Intermediate

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:

When handling the replacement assemblies, do not touch the shiny black surface of the ITB or the sponge surface of the secondary transfer roller. Skin oils might cause image quality problems.

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

ITB and Secondary Transfer Roller Kit Part Number

A2W77-67904

ITB and secondary transfer roller kit with instruction guide

Required tools

  • No special tools are required to install this part.

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 a configuration page to make sure that the printer is functioning correctly.

Remove the ITB

Follow these steps to remove the ITB.

  1. Open the right door.

    Open the right door

    Open the right door
  2. Lift up the green handle on the transfer assembly door, and then lower the door to open it.

    Open the transfer assembly door

    Open the transfer assembly door
  3. Raise the ITB levers.

    Raise the ITB levers

    Raise the ITB levers
  4. Grasp the ITB by the blue handles, and then slide it about halfway out of the product.

    Note:

    A second set of blue handles is available when the ITB is slid about halfway out of the product.

    Slide the ITB halfway out

    Slide the ITB halfway out
  5. Grasp the ITB by the second set of blue handles, and then slide it straight out of the product to remove it.

    Remove the ITB

    Remove the ITB

Remove the secondary transfer roller

Follow these steps to remove the secondary transfer roller.

  1. Lift up the secondary transfer roller assembly handles, and then pull the assembly straight out of the product to remove it.

    Remove the secondary transfer roller

    Remove the secondary transfer roller

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 ITB

Follow these steps to install the ITB.

  1. Remove all of the protective shipping materials from the replacement ITB.

    Remove shipping materials

    Remove shipping materials
  2. Unscrew, and then remove two shipping locks on the ITB.

    Remove shipping locks

    Remove shipping locks
  3. Remove the orange shipping tape and cardboard near the large white gear on the ITB.

    Remove tape and cardboard

    Remove tape and cardboard
  4. Remove the orange shipping locks from the front of the ITB.

    Remove shipping locks at front

    Remove shipping locks at front
  5. Grasp the ITB by the blue handles, and then slide it straight into the product to install it.

    Install the ITB

    Install the ITB
  6. Lower the ITB locking levers until they snap into the locked position.

    Lower the locking levers

    Lower the locking levers

Install the secondary transfer roller

Follow these steps to install the secondary transfer roller.

  1. Align the blue arrows on the secondary transfer roller assembly with the blue arrows on the transfer assembly door, and then push the roller assembly into the product to install it.

    Align and install the secondary transfer roller

    Align and install the secondary transfer roller
  2. Raise the transfer assembly door to close it.

    Note:

    The green handle will snap into place when the door is fully closed.

    Close the transfer assembly door

    Close the transfer assembly door
  3. Close the right door.

    Close the right door

    Close the right door

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