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HP Color LaserJet M651 - Removal and replacement: Control-panel assembly (M651)

This document provides instructions about removing and replacing the control-panel assembly.

Mean time to repair:15 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.

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

Control panel kit part number

S851-5950

Control panel kit with instruction guide

Required tools

No special tools are required to install this kit.

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 control-panel assembly

Follow these steps to remove the control-panel assembly.

  1. Tilt the control panel up.

    Remove the control panel (M651; 1 of 8)

    Remove the control panel (M651; 1 of 8)
  2. Release the latch on the control-panel cover, and remove the cover.

    Remove the control panel (M651; 2 of 8)

    Remove the control panel (M651; 2 of 8)
  3. Rotate the blue lever counterclockwise to unlock the control-panel assembly.

    Remove the control panel (M651; 3 of 8)

    Remove the control panel (M651; 3 of 8)
  4. Lift the control-panel assembly out of the product.

    Remove the control panel (M651; 4 of 8)

    Remove the control panel (M651; 4 of 8)
  5. Tilt the control panel forward to gain access to the control-panel connectors.

    Remove the control panel (M651; 5 of 8)

    Remove the control panel (M651; 5 of 8)
  6. Remove one screw (callout 1), and then release one ground wire (callout 2).

    Remove the control panel (M651; 6 of 8)

    Remove the control panel (M651; 6 of 8)
  7. Disconnect two USB cables (callout 1), and then disconnect one connector (callout 2).

    Remove the control panel (M651; 7 of 8)

    Remove the control panel (M651; 7of 8)
  8. Lift the control-panel assembly up and away from the product to remove it.

    Remove the control panel (M651; 8 of 8)

    Remove the control panel (M651; 8 of 8)

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.

  1. Place the control panel on the printer and tilt it forward to gain access to the control panel connectors.

    Install the control panel (M651; 1 of 7)

    Install the control panel (M651; 1 of 7)
  2. Connect one connector (callout 1) and connect two usb cables (callout 2).

    Install the control panel (M651; 2 of 7)

    Install the control panel (M651; 2 of 7)
  3. Attach one ground wire (callout 1 ) and install one screw (callout 2).

    Install the control panel (M651; 3 of 7)

    Install the control panel (M651; 3 of 7)
  4. Lower the control-panel assembly into the printer.

    Install the control panel (M651; 4 of 7)

    Install the control panel (M651; 4 of 7)
  5. Rotate the blue lever clockwise to lock the control-panel assembly.

    Install the control panel (M651; 5 of 7)

    Install the control panel (M651; 5 of 7)
  6. Install the control-panel cover, and secure the latch.

    Install the control panel (M651; 6 of 7)

    Install the control panel (M651; 6 of 7)
  7. Tilt the control panel to the original position.

    Install the control panel (M651; 7 of 7)

    Install the control panel (M651; 7 of 7)

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