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HP LaserJet Enterprise MFP M631, M632, M633 - Removal and replacement: Control panel (M631/M632/M633)
This document provides the procedures to remove and replace the control panel (M631/M632/M633).
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
Control panel (M631/M632/M633) part number
5851-7210
Control panel kit (203 mm8 in display)
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
Make sure that the printer initializes to a Ready state.
Access the menus by using the printer control panel, and then print a configuration page to make sure that the printer is functioning correctly.
  1. Remove the control panel (M631/M632/M633).
    1. Tilt the control panel forward (callout 1), and then open the document feeder (callout 2).
      Figure : Tilt the control panel forward and 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.
      Figure : Release five tabs
    3. Continue to rotate the top edge of the cover away from the printer, and then remove the cover.
      Figure : Remove the cover
    4. Keyboard models only: Lift up on the small, gray gate to release the keyboard flat cable.
      Figure : Disconnect the keyboard flat cable (keyboard models only)
    5. Disconnect two connectors (callout 1), and then release the USB cable (callout 2) from the holder.
        note:
      Flow M632z only: Disconnect one connector (callout 3), release four tabs (callout 4), and then remove the near-field communication (NFC) printed circuit board. Set this part aside to install on the replacement control panel.
      Figure : Disconnect connectors
    6. Remove three thumbscrews (callout 1).
      Figure : Remove three thumbscrews
    7. Lift the front of the control panel off of the printer (callout 1), and then slide it toward the front of the printer (callout 2) to remove it.
      Figure : Remove the control panel
  2. 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.
  3. Install the control panel (M631/M632/M633).
    1. Tilt the replacement control panel away from the base plate.
      Figure : Tilt the control panel
    2. Position the rear edge of the control panel in the printer (callout 1), and then lower the front edge down (callout 2) to install it.
        note:
      Make sure that the control panel frame fits under the sheet metal tab on the right rear.
      Keyboard models only: Make sure that the keyboard flat cable is accessible through the opening in the control panel base before installing the screws in the next step.
      Figure : Install the control panel
    3. Install three thumbscrews (callout 1).
      Figure : Install three thumbscrews
    4. Connect two connectors (callout 1) and install the USB cable (callout 2) in the holder.
      Figure : Connect connectors
    5. Keyboard models only: Make sure that the keyboard flat cable (callout 1) is fed through the opening (callout 2) in the control panel base.
      Figure : Check the keyboard flat cable (keyboard models only)
    6. Keyboard models only: Close the connector latch to secure the keyboard flat cable.
      Figure : Connect the keyboard flat cable (keyboard models only)
    7. Position the control panel cover on the printer.
      Figure : Position the cover on the printer
    8. Beginning at the right side of the control panel cover, install five tabs along the top edge of the cover.
      Figure : Install five tabs
    9. Close the document feeder.
        note:
      Adjust the control panel to the desired angle.
      Keyboard models only: If the keyboard is unresponsive after turning the printer on, check the flat cable installed in step 6. Reinstall the cable if necessary.
      Figure : Close the document feeder

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