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HP PageWide Pro MFP 772/777 and HP PageWide Managed MFP P77740/P77750/P77760 - Removal and replacement: Control panel (MFP large touchscreen models)

This document provides the procedures to remove and replace the 203 mm8 in control panel (MFP models only) (CSR B).

Mean time to repair: 10 minutes

Service level: Basic

Important:

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

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 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.

Part information

Control panel 203 mm8 in part number

A7W95-67020

Control panel 203 mm8 in with instruction guide

Required tools

  • Small flat-blade screwdriver.

After performing service

Turn the printer power on

  • Connect the power cable.

  • Use the power switch to turn the power on.

Post service test

Turn the printer power on, and then verify that the touchscreen is correctly functioning.

Remove the control panel 203 mm8 in

Follow these steps to remove the control panel 203 mm8 in.

  1. If the control panel is in the down position, push the release button, and then rotate the control panel to the fully raised position.

    Raise the control panel

    Raise the control panel
  2. Use a small flat-blade screw driver to carefully release the control-panel connector cover, and then rotate the end of the cover (near the document feeder) up.

    CAUTION:

    The cover is still attached to the control panel. Do not attempt to completely remove the cover.

    Remove the cover

    Remove the cover
  3. Rotate the small FFC clip up to release the flat-flexible cable (FFC).

    CAUTION:

    This connector is a zero insertion force (ZIF) connector. The clip on this connector is easily dislodged and lost.

    Release the FFC

    Release the FFC
  4. Use a small flat-blade screwdriver to release one tab (callout 1), and then slight lift up the corner of the control panel (callout 2).

    Release the control panel (1 of 2)

    Release the control panel (1 of 2)
  5. Support the raised control panel (callout 1), use a small flat-blade screwdriver to release one tab (callout 2), and then lift up the control panel (callout 3) to release it from the hinges.

    CAUTION:

    Keep the control panel level when sliding it up and off of the hinges. An excessive side-to-side rocking motion of the control panel might damage the hinges.

    Release the control panel (2 of 2)

    Release the control panel (2 of 2)
  6. Remove the control panel.

    Remove the control panel

    Remove the control panel

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 203 mm8 in

Follow these steps to install the control panel 203 mm8 in.

  1. Align the slots in the control panel body (callout 1) with the hinges (callout 2), and then slide the control panel straight down and onto the hinges (callout 3).

    CAUTION:

    Keep the control panel level when sliding it down and onto the hinges. An excessive side-to-side rocking motion of the control panel might damage the hinges.

    Install the control panel

    Install the control panel
  2. Insert the FFC into the connector body, and then rotate the small FFC clip down

    CAUTION:

    This connector is a zero insertion force (ZIF) connector. The clip on this connector is easily dislodged and lost.

    Important:

    When correctly installed and connected, the black line on the FFC is parallel to the connector clip. If the black line is at an angle to the clip, open the clip and reinsert the FFC into the connector body. Close the clip and check the FFC black line again.

    Connect the FFC

    Connect the FFC
  3. Install the FFC cover, and then lower the control panel.

    CAUTION:

    The control panel will not completely lower if the FFC cover is not correctly installed.

    Note:

    Peel the plastic protective sheet off of the control-panel display.

    Install the FFC cover, and lower the control panel

    Install the FFC cover, and lower the control panel

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