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Learn how to remove and replace the embedded Multi-Media Card (eMMC).
Mean time to repair: 10 minutes
Service level: CSR A
Turn the printer power off
Disconnect the power cable.
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.
PC board - eMMC 16GB
No special tools are required to remove or install this assembly.
Turn the printer power on
Connect the power cable.
Use the power switch to turn the power on.
Make sure that the printer initializes to a Ready state.
Print a page to make sure that the printer is functioning correctly.
Follow these steps to remove the formatter cover.
Loosen one thumbscrew (callout 1), and then slide the formatter cover (callout 2) away from the printer to remove it.
Remove the formatter cover
Follow these steps to remove the embedded Multi-Media Card (eMMC) (M751/E75245/M856/E85055).
Locate the embedded Multi-Media Card (eMMC) on the formatter board.
Locate the eMMC
Lift the eMMC off of the formatter board to remove it.
Remove the eMMC
Follow these steps to unpack the replacement assembly.
Dispose of the defective part.
HP recommends responsible disposal of the defective part.
Unpack the replacement part from the packaging.
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.
Make sure that all of the shipping materials (for example shipping tape) are removed from the replacement part prior to installation.
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.
To install an assembly, reverse the removal steps.
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.
Follow these steps to install the embedded Multi-Media Card (eMMC) (M751/E75245/M856/E85055).
Position the connector (callout 1) on the eMMC card into the connector (callout 2) on the formatter board.
Position the eMMC
Press the eMMC firmly onto the formatter board to install it.
Install the eMMC
Follow these steps to install the formatter cover.
Position the formatter cover (callout 1) on the printer, slide it toward the printer to install it, and then tighten one thumbscrew (callout 2).
Install the formatter cover
Also use the following special installation instructions.
Reinstall the printer firmware
Go to www.hp.com/go/futuresmart.
Select Upgrade now.
Find your Enterprise printer model.
Select the link to open the firmware download page.
Scroll down and expand Firmware-FutureSmart 4.
Select Download next to the printer firmware entry.
To view installation instructions, go to http://www.hp.com/go/futuresmart. Select Upgrade now, and then select How to perform a firmware update.