Question about HP Hewlett Packard LaserJet 2420 Printer

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My 2420 laserjet attention light is on and there is no lcd display. The back light on the display is lit

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Posted on Jan 02, 2017

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SOURCE: LaserJet 2420 Printer: better driver for hp 2420...

Please install new driver and get it downloaded here : > Drivers > Printer > HP

Jay jynbtr

Posted on Feb 13, 2011

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SOURCE: On powerup the HP Laserjet

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!

Posted on Mar 14, 2011

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Red light flashing

"Hello, Here is website explaining your red attention lights definitions."
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Please rate this answer, Thks.

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Can't see digital indicators in day light to dim

Your back-lit display light is either burnt out or the fuse is blown. It may be a more serious problem that needs expert attention. i.e. a mechanic
There could be a circuit board that controls the back light that has gone bad like I had with an LCD monitor once.

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My HP LaserJet 2420n Printer is starting but I am not getting the LCD display and LEDs are not getting on and printouts are not coming.

If the printer is printing normally, problem with Display check display connectors,replace it,,,,, if printer is not recognising by system replace formatter assm..

Sep 15, 2011 | HP LaserJet 2420 Printer

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We have a HP Laserjet P3005n that has a blank LCD display, will not print, and all 3 LEDs on the panel are lit, Ready, Data, and Attention. Not even the print configuration page, directly printed from the...

try to remove the dimm. try to switch on without dimm. it not successfully than try to check the cables from the power board to the formatter. try to push them in thir place. If this is not successfull too than it is a formatter problem. try to change the formatter

Jul 13, 2011 | HP LaserJet P3005n Printer

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Hp laserjet 5200 the attention button red light won't stop blinking

This can be a number of reasons however I would be looking for a piece of paper jammed in the printer somewhere. Is the printer giving an error message or code?
If you turn the printer off, disconnect the printer cable, wait 5 minutes & then turn the printer back on, does it then power up & go to ready?

Apr 13, 2011 | HP LaserJet 2420 Printer

1 Answer

Lines on paper produced by lines on drums new


The link below will provide you with all the necessary information to fix issues related to the HP Laserjet 2420 Printer

HP Laserjet Troubleshooting

Also, try the steps below.

1. Turn the printer off, and turn it on again.
2. Force a calibration by selecting CALIBRATE NOW from the Print Quality Menu.

1. Press example (Select) to enter the MENUS.
2. Press example (Down Arrow) to highlight CONFIGURE DEVICE.
3. Press example (Select) to select CONFIGURE DEVICE.
4. Press example (Down Arrow) to highlight PRINT QUALITY.
5. Press example (Select) to select PRINT QUALITY.
6. Press example (Down Arrow) to highlight CALIBRATE NOW.
7. Press example (Select) to select CALIBRATE NOW.
8. Wait for the printer to calibrate.
3. Perform a cold reset on the printer.

1. Turn the printer on.
2. Watch the control panel.
3. When the memory starts counting, press and hold the green example (Select) button.
4. Continue holding the green example (Select) button until the Ready, Data, and Attention lights flash once, and then stay on steady.
5. Release the check button when the Ready, Data, and Attention light are on steady. The control panel will display SELECT LANGUAGE.
6. Press example (Down Arrow) button once. The control panel will display COLD RESET.
7. Press example (Select). The printer will perform a cold reset and then continue its power-on sequence.

If this issue persists, contact an HP-authorized service or support provider. ( 1-800-474-6836 )
If the Toner is newly purchased and it is because of faulty toner, HP will replace it for no charges.


* Please rate this solution with Thumbs up and Testimony to help us improve providing support

Jan 05, 2011 | HP LaserJet 2420 Printer

1 Answer

Hi my HP LaserJet 2420 Printer says error 52

I found this about your error.

Problem: When a print job is sent, paper doesn't pick up and a 52 error is displayed on the LCD panel.

Cause: The scanner motor is not spinning up to the correct speed. This problem can only be fixed by replacing the scanner motor.

Solution: Replace the necessary parts, all of which are included in this repair kit (along with easy to follow directions).

Kit Includes:
  • Scanner Motor
  • Instructional Video (CD-ROM or VHS)
Hope you can fix it All Best: Pineworks

Feb 03, 2010 | HP LaserJet 2420 Printer

2 Answers

Blank printing

Did you pull the plastic tape from the side of the cartridge?

Nov 14, 2008 | HP LaserJet 2420 Printer

2 Answers

Attention light flashing- says replace black cartridge

Try reset the printer. Turn off powerswitch, press gobutton, turn on powerswitch while pressing gobutton. hold approx 15sec and release the button. The printer will reboot. Clean the cartridge contacts and HV pins in printer.

Sep 30, 2008 | HP LaserJet 2420 Printer

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