Question about HP LaserJet 2840 All-In-One Printer

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How to install new ram into the 2840

Hello, I've called HP and can't get an answer on how to install the 128 mb upgrade of ram into the slot. The only slots I see visible on the machine are the photo memory card slots but I want to add more RAM to the actual printer memory as it only comes with something like 96MB of RAM installed. I've also looked through their manual to no avail and on the Internet. Do you know how to do this? Thanks

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  • davidskys Nov 25, 2008

    I've ordered and installed a 128MB memory DIMM (twice!) in my Color LaserJet 2840 per your instructions, but the memory isn't recognized. The HP Toolbox and Configuration Report both say the slot is empty and the total memory still shows as just 96MB.



    Is there anything "magical" that needs to be done? I've already updated the firmware in the printer, unplugged it, installed the memory, waited multiple times - anywhere between 5 minutes and 5 hours - before plugging it back in, and the additional memory is still not recognized.

  • Anonymous Apr 18, 2009

    I can't get the updated memory to show.

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Unplug the machine. On the right side of the machine you will find a cover. Remove the cover and you will find 1 open slot. The machine can take a total of 224MB (96 is built into the machine) leaving 128 available. The memory type is 100pin, 133MHz, SDRAM DIMM.

Simply click the memory into the blank slot and replace the cover.

Once completed, plug the machine back in and print a configuration page. The memory total should be at 224 once you have installed your 128MB.

Good Luck

Posted on Aug 05, 2008

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You can find the extented memory slot on right hand side of your printer.
Open the outter cover. This cover can be removed from the hing. Behind the
outter cover is a metal encloser with a removable cover. There you will find a
100 pin memory slot.
In the past two days, I tried upgrading the memory on my 2840. So I purchased
a 256mbPC100(100-pin)SDRAM memory card. It did not work (damit). The
extra memory prevented the printer from entering the calibration cycle on
start-up. I still do not know why it did not work. If you find why it didn't work,
please clue me in.

Posted on Aug 03, 2012

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Posted on Jan 02, 2017

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