Question about HP LaserJet 2420dn Printer

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Not recognizing the momory

My HP LaserJet 2420dn is not recognizing the memory I have, 64MB. The display reads "000MB"...

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  • 52 Answers

Try removing the memory board, clean the terminals and place back.

Posted on May 26, 2009


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1 Answer

Upgrade memory

You can grab the instruction manual here:
The memory installation process is on page 191.

Feb 21, 2014 | HP LaserJet 2420dn Printer

1 Answer

Laserjet 4250 printer showing error message 000MB Will not start. Tried holding down check symbol. Nothing happened. Cannot clear problem

Either your memory is bad on the printer or the formatter is bad. Remove the right side cover and open the metal cage for the formatter and reseat any memory chips you find there. Make sure the printer is unplugged from power first.

Aug 03, 2011 | HP LaserJet 4100 Printer

1 Answer

On powerup the HP Laserjet 2420 display shows 000MB ********** ******************* Bad boot DIMM?

I think you have a bad memory module, or a bad system board, did it happened after a power loss or power surg??? (common for these printers)

Have you tried to reset it to factory default (according to service manual)

Good luck!

Mar 14, 2011 | HP LaserJet 2420 Printer

1 Answer

My printer shows memory error on its screen why?

Mem test failure replace Dimm 0 or Mem test failure replace Dimm 1
If either of the are the messages displayed, the problem lies with the mother board (formatter).
DIMM 0 = On Board Memory - cannot be changed. DIMM 1 = Add On Ram - Can be Changed
Make Sure the printer firmware is up to date FIRMWARE
Most Likely the formatter board would require replacing.

Feb 03, 2011 | HP LaserJet 2420dn Printer

1 Answer

I have a HP LaserJet 2420dn Printer the problem is, it takes too long a time print a document

The easiest solution for these printers is to upgrade the standard memory to at least 128Mb or 256MB. Memory is relatively cheap and adding it will speed printer functions greatly.

Jan 16, 2011 | HP LaserJet 2420dn Printer

1 Answer

Hp desktjet printer won't work after installing refilled cartraige hp 4200

follow any of these to reset it and will work

1. Turn the product off.
2. Turn the product on.
3. Press and hold down the checkmark (Select) button while the memory is counting. The memory starts counting at 000MB immediately after you turn the power on.
4. Continue to hold down the checkmark (Select) button until all three LEDs are illuminated.
5. Release the checkmark (Select) button.
6. Press the up arrow (Navigation) button until the message New Maintenance Kit appears on the control panel display.
7. Press the checkmark button once.
the check mark is the v like sign ..

Sep 02, 2010 | HP Office Equipment & Supplies

1 Answer

HP LaserJet 2420dn display is blank when powering on.

I had the same problem here. Removed memory and put it in the other slot and problem solved!

Feb 22, 2010 | HP LaserJet 2420dn Printer

2 Answers

HP Laserjet 2420dn will not print and is displaying message '49.FF04 service error'

Does the error display when printing a particular job, or anything that you print? If you have extra memory installed, remove it. Power up and try again. If it won't clear replace the formatter

Jan 29, 2010 | HP LaserJet 2420dn Printer

2 Answers

I need hplaserjet 2420dn driver

Dec 17, 2008 | HP LaserJet 2420dn Printer

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