20 Most Recent HP LaserJet 2420 Printer - Page 3 Questions & Answers

120 volts AC in the US. Wattage is between 700- 1200.

print quality problems are almost always the toner cartridge. Replace the toner to test.

49:xx xy fault code is Firmware crash , look at the 49 error as bieng like a blue screen crash on windows, there are many things that could cause this to show- what to do- disconnect both the mains cable and any other network/usb cables that are connected to the printer. allow 20 seconds for the ram to clear. then re- power the printer still with no network connections, allow to come to fready - at this point you should try to get an info page from the printer ( use the menu(tick) button then scroll down once then press menu(tick) twice. this should now print out a information page and also at the same time you will have proven there is nothing wrong with the printer.# BEFORE re-connecting the network to the printer - CLEAR ALL PRINT Queue's from the workstations (pc) as the likely fault is a corrupt print file, if you dont clear the print queue then the printer will attempt to print the failed file again and again and again and again and ag-sod it you got the idea

change ic chip catridge

Sounds like a potentially bad Firmware chip. This chip is on the formatter board (the board that your cable from the computer plugs into) and will be marked firmware.

Clean pickup rollers with soupy water and dry properly

Then pick it yourself..