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  • Information
    Important Print Security Update

    HP was recently made aware of a vulnerability in certain inkjet printers by a third-party researcher. HP has updates available for download to address the vulnerability. Details and more information are available in the Security Bulletin

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HP LaserJet Enterprise MFP M631, M632, M633 - Removal and replacement: Fax PCA
This document provides the procedures to remove and replace the fax PCA.
Mean time to repair: 5 minutes
Service level: Basic
  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.
Before performing service
  • Disconnect the power cable.
      warning:
    To avoid damage to the printer, turn the printer off, wait 30 seconds, and then remove the power cable 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
Fax PCA part number
CC522-67929
Analog fax kit
Required tools
  • No special tools are needed 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.
  1. Remove the formatter cover.
    1. To remove the formatter cover, do the following:
      • On the formatter cover, release two thumb screws (callout 1).
      • Slide the formatter cover in the direction indicated by the arrow (callout 2) and remove it.
      Figure : Release two thumb screws and remove the formatter cover
  2. Remove the fax PCA.
    1. Locate the fax PCA on the formatter.
        caution:
      Electrostatic sensitive (ESD) parts. Always touch the sheet‑metal chassis to provide a static ground before touching an ESD‑sensitive part.
      Figure : Locate the fax PCA
    2. Rotate the end of the fax PCA away from the formatter (callout 1) to disconnect the connector, and then slide the PCA away from the formatter (callout 2) to remove it.
      Figure : Remove the fax PCA
  3. Unpack the replacement assembly.
    1. Dispose of the defective part.
        note:
      HP recommends responsible disposal of the defective part.
    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.
      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.
        note:
      Make sure that all of the shipping materials (for example shipping tape) are removed from the replacement part prior to installation.
    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.
  4. Install the fax PCA.
    1. To install the replacement fax PCA, do the following:
      • Position the telephone port on the end of the fax PCA through the opening in the formatter case (callout 1).
      • Rotate the connector end toward the formatter (callout 2), and then install the connector on the fax PCA into the connector on the formatter.
      Figure : Install the fax PCA
  5. Install the formatter cover.
    1. Slide the formatter cover onto the printer in the direction indicated by the arrow (callout 1), and then tighten two thumb screws (callout 2).
        note:
      The image shown is for the M631/M632/M633 printers, however the install process is the same for M607/M608/M609 printers.
      Figure : Slide on the formatter cover and tighten two thumb screws

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