Question about HP LaserJet 2420dn Printer
Power the printer off and pull the plug.On the right side of the printer is an access panel, slide it back to disengage it. Now you should be looking at a metal cover. Pull it out from the front to open it and lift it off its hinges. There will be at least one memory DIMM facing you. If there are two, remove the lower one. Power the printer up. If it initializes, good. That means that the DIMM you pulled is bad. If it still fails, power down, pull the plug and remove the other DIMM. Power up. If it works the 2nd DIMM is bad. Power down again and put the 1st DIMM you removed in the slot that the 2nd one came out of. power up and order another DIMM. Don't forget about the covers!
Posted on Sep 15, 2010
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Posted on Jan 02, 2017
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