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HP LaserJet Enterprise MFP M631, M632, M633, M634, M635, M636; HP LaserJet Managed MFP E62555, E62565, E62575, E62655, E62665, E62675 - Removal and replacement: Dual in-line memory module (DIMM)

This document provides the procedures to remove and replace the DIMM.

Mean time to repair: 5 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

  • 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

Part number

Part description

E5K48-67902

DIMM kit (1 GB DDR3 x32 144 Pin 800 MHz)

5851-6581

DIMM kit (2 GB DDR3 x32 144 Pin 800 MHz)

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.

Remove the formatter cover

Follow these steps to remove the formatter cover.

  1. To remove the formatter cover, do the following:

    Note:

    A SFP printer is shown in this section. However, the procedure is correct for all printer models.

    • 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.

    Release two thumb screws and remove the formatter cover

    Release two thumb screws and remove the formatter cover

Remove the DIMM

Follow these steps to remove the DIMM.

  1. Do the following:

    • If a hard disk drive (HDD) is not installed, skip the next two steps and go to step 3.

    • On the HDD, release the locking connector (callout 1), and then pinch the retainer (callout 2) to release it.

      CAUTION:

      Electrostatic sensitive (ESD) parts. Always touch the sheet‑metal chassis to provide a static ground before touching an ESD‑sensitive part.

    Release the HDD locking connector and pinch the retainer to release it

    Release the HDD locking connector and pinch the retainer to release it
  2. Do the following:

    • Rotate the connector end of the HDD out and away from the formatter (callout 1).

    • Slide the HDD away from the formatter cage (callout 2) and remove it.

    Rotate the HDD away from the formatter and remove the HDD

    Rotate the HDD away from the formatter and remove the HDD
  3. Locate the DIMM component on the formatter.

    Locate the DIMM on the formatter

    Locate the DIMM on the formatter
  4. Release two locking arms (callout 1), and then allow the top edge of the DIMM to pivot away from the holder (callout 2).

    Release two locking arms and pivot the DIMM away from the holder

    Release two locking arms and pivot the DIMM away from the holder
  5. Lift up and remove the DIMM in the direction indicated by the arrow.

    Lift up and remove the DIMM

    Lift up and remove the DIMM

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 DIMM

Follow these steps to install the DIMM.

  1. Insert the replacement DIMM down into the DIMM holder on the formatter in the direction indicated by the arrow.

    Insert the DIMM into the holder

    Insert the DIMM into the holder
  2. Pivot the edge of the DIMM toward the holder (callout 1) and then make sure that the two locking arms snap into place (callout 2).

    Pivot the DIMM into the holder and secure the two locking arms

    Pivot the DIMM into the holder and secure the two locking arms
  3. Do the following:

    • If a hard disk drive (HDD) is not installed, steps 8, 9 and 10 are not necessary.

    • Before proceeding, take note of the location of the slot in the sheet metal (callout 1) where the HDD cradle mounting tab (callout 2) must be installed.

    Locate the slot where the HDD mounting tab is installed

    Locate the slot where the HDD mounting tab is installed
  4. Do the following:

    • Insert the HDD cradle mounting tab into the slot in the sheet metal.

    • Slide the HDD to toward the formatter cage (callout 1) to fully install the tab in the sheet metal.

    • Rotate the connector end (callout 2) of the HDD toward the formatter.

    Install the tab into the slot and rotate the connector end

    Install the tab into the slot and rotate the connector end
  5. Make sure that the locking connector (callout 1) latches and that the standoff (callout 2) engages with the slot in the formatter.

    Note:

    It might be necessary to pinch the retainer to engage it with the slot.

    The locking connector is latched and the standoff is engaged with the slot

    The locking connector is latched and the standoff is engaged with the slot

Install the formatter cover

Follow these steps to 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: An MFP printer is shown in this section. However, the procedure is correct for all printer models.

    Slide on the formatter cover and tighten two thumb screws

    Slide on the formatter cover and tighten two thumb screws

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