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HP LaserJet 4050 Family Printers - Adding Memory to the Printer

This document explains how to install memory in the HP LaserJet 4050 series printer. Print a configuration page to find out how much memory is installed in the printer before adding more memory. The maximum amount of memory that can be installed in the HP LaserJet 4050 printer is 192 megabytes.

Installing memory

CAUTION: Static electricity can damage dual, in-line memory modules (DIMMs). When handling DIMMs, either wear an antistatic wrist strap or frequently touch the surface of the DIMM’s antistatic package; then, touch bare metal on the printer.
  1. Turn the printer off. Rotate the printer for access to its right side. Unplug the power cord and disconnect any cables.

    Figure 1: Turning the printer off

  2. Grasp the cover and pull it firmly toward the rear of the printer until it stops.

    Figure 2: Pulling the cover toward the rear of the printer

  3. Remove the cover from the printer.

    Figure 3: Removing the cover from the printer

  4. Loosen the captive screw holding the DIMM access door with a Phillips #2 screwdriver. Open the door.

    Figure 4: Loosening the screw holding the access door

  5. Remove the DIMM from the antistatic package. Hold the DIMM with fingers against the side edges and thumbs against the back edge. Align the notches on the DIMM with the DIMM slot. The chips on the DIMM face down. (Check that the locks on each side of the DIMM slot are open or outward.)

    Figure 5: Removing the DIMM from the package

  6. Press the DIMM straight into the slot (press firmly). Make sure that the locks on each side of the DIMM snap inward into place. (To remove a DIMM, the locks must be released.)

    Figure 6: Pressing the DIMM into the slot

  7. Close the DIMM access door and tighten the screw.

    Figure 7: Closing the DIMM access door

  8. Set the bottom of the cover onto the printer. Make sure that the bottom tabs on the cover fit into the corresponding slots in the printer. Rotate the cover up toward the printer.

    Figure 8: Setting the bottom of the cover onto the printer

  9. Slide the cover toward the front of the printer until it clicks into place. Reattach any interface cables and the power cord; then, turn the printer on and test the DIMM.

    Figure 9: Sliding the cover into place

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Checking memory installation

Follow this procedure to verify that DIMMs are installed correctly:

  1. Check that the printer’s control panel displays "Ready" when the printer is turned on. If an error message appears, a DIMM might have been incorrectly installed. Check the printer messages.

  2. Print a new configuration page.

  3. Check the memory section on the configuration page and compare it to the configuration page printed before the DIMM installation. If the amount of memory has not increased, the DIMM might not be installed correctly (repeat the installation procedure), or the DIMM might be defective (try a new DIMM).

    NOTE: If additional printer languages (personality) are selected, check the Installed Personalities and Options section on the configuration page. This area should list the new printer language.

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