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HP Color LaserJet MFP M680 - Removal and replacement: Control-panel assembly (M680)

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

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.

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

S851-5952

Control panel kit (without keyboard) with instruction guide

S851-6430

Control panel kit (with U.S. English keyboard) 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 assembly (M680; 1 of 7)

    Remove the control-panel assembly (M680; 1 of 7)
  2. Release one tab, and then remove the cover.

    Remove the control-panel assembly (M680; 2 of 7)

    Remove the control-panel assembly (M680; 2 of 7)
  3. M680z only: Slide the keyboard about halfway out of the product.

    Remove the control-panel assembly (M680; 3 of 7)

    Remove the control-panel assembly (M680; 3 of 7)
  4. Disconnect two connectors.

    Remove the control-panel assembly (M680; 4 of 7)

    Remove the control-panel assembly (M680; 4 of 7)
  5. Remove one screw.

    Tip:

    Use the edge of a coin to loosen the screw.

    Remove the control-panel assembly (M680; 5 of 7)

    Remove the control-panel assembly (M680; 5 of 7)
  6. Slide the control panel toward the right door.

    Remove the control-panel assembly (M680; 6 of 7)

    Remove the control-panel assembly (M680; 6 of 7)
  7. Slide the control panel towards the front of the product to remove it.

    Remove the control-panel assembly (M680; 7 of 7)

    Remove the control-panel assembly (M680; 7 of 7)

Remove the keyboard assembly

Follow these steps to remove the keyboard assembly.

  1. Place the control panel on a flat surface.

    Remove the keyboard assembly (M680z; 1 of 7)

    Remove the keyboard assembly (M680z; 1 of 7)
  2. Open the hinged latch to release the flat cable.

    Important:

    This connector is a Zero Insertion Force (ZIF) connector that uses a hinged retainer to secure a flat cable. The hinged retainer must be opened to release the flat cable.

    CAUTION:

    Be careful. Do not dislodge the latch from the connector when opening it.

    Remove the keyboard assembly (M680z; 2 of 7)

    Remove the keyboard assembly (M680z; 2 of 7)
  3. Disconnect the flat cable.

    Remove the keyboard assembly (M680z; 3 of 7)

    Remove the keyboard assembly (M680z; 3 of 7)
  4. Tilt the screen down until it lays flat.

    Remove the keyboard assembly (M680z; 4 of 7)

    Remove the keyboard assembly (M680z; 4 of 7)
  5. Slide the keyboard tray all of the way out of the control panel until it stops.

    Remove the keyboard assembly (M680z; 5 of 7)

    Remove the keyboard assembly (M680z; 5 of 7)
  6. Turn the control panel face-down on the surface.

    Remove the keyboard assembly (M680z; 6 of 7)

    Remove the keyboard assembly (M680z; 6 of 7)
  7. Release and hold two tabs (callout 1) while sliding the keyboard tray away from the control panel (callout 2) to remove it.

    Remove the keyboard assembly (M680z; 7 of 7)

    Remove the keyboard assembly (M680z; 7 of 7)

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 keyboard assembly

Follow these steps to install the keyboard assembly.

  1. Turn the keyboard tray upside down, and then position the flat cable (callout 1) inside the tray cavity. Align the edges of the tray (callout 2) with the slots in the control panel (callout 3).

    Reinstall the keyboard assembly (M680z; 1 of 7)

    Reinstall the keyboard assembly (M680z; 1 of 7)
  2. Slide the keyboard tray all the way into the control panel.

    Reinstall the keyboard assembly (M680z; 2 of 7)

    Reinstall the keyboard assembly (M680z; 2 of 7)
  3. Turn the control panel face-up.

    Reinstall the keyboard assembly (M680z; 3 of 7)

    Reinstall the keyboard assembly (M680z; 3 of 7)
  4. Tilt the screen up.

    Reinstall the keyboard assembly (M680z; 4 of 7)

    Reinstall the keyboard assembly (M680z; 4 of 7)
  5. Open the hinged latch, and then position the flat cable in the connector.

    CAUTION:

    Be careful. Do not dislodge the latch from the connector when opening it.

    Reinstall the keyboard assembly (M680z; 5 of 7)

    Reinstall the keyboard assembly (M680z; 5 of 7)
  6. Use a finger to carefully close the latch to lock the flat cable into position.

    Important:

    This connector is a Zero Insertion Force (ZIF) connector that uses a hinged retainer to secure a flat cable. When the flat cable is reinstalled, fully insert the flat cable in the connector, and then close the hinged retainer to lock the flat cable into the connector and provide proper electrical contact. If the flat cable is not locked into the connector, no electrical contact will occur.

    CAUTION:

    Be careful. Do not dislodge the latch from the connector when closing it.

    Reinstall the keyboard assembly (M680z; 6 of 7)

    Reinstall the keyboard assembly (M680z; 6 of 7)
  7. Slightly pull on the flat cable to verify that it is securely fastened in the connector.

    CAUTION:

    Be careful. Do not use full force to pull on the flat cable. A slight pull on the cable is sufficient to verify that it is securely fastened.

    Reinstall the keyboard assembly (M680z; 7 of 7)

    Reinstall the keyboard assembly (M680z; 7 of 7)

Install the control-panel assembly

Follow these steps to install the control-panel assembly.

  1. Insert the cable and wire harness (callout 1) into the opening at the back of the control panel (callout 2).

    Reinstall the control-panel assembly (M680; 1 of 3)

    Reinstall the control-panel assembly (M680; 1 of 3)
  2. Insert the tabs on the control panel into the slots on the product.

    Reinstall the control-panel assembly (M680; 2 of 3)

    Reinstall the control-panel assembly (M680; 2 of 3)
  3. Slide the control panel toward the left door to secure it to the product.

    Reinstall the control-panel assembly (M680; 3 of 3)

    Reinstall the control-panel assembly (M680; 3 of 3)

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