Hl1440 drum indicator flashing

Hi,

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.


Regards,
Shawn



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remove drum assy. and remove toner unit off drum then blow out the drum only. This should clear problem.

Try this.

• Take out the drum and toner.
• Slid the tab on the top right from right to left 20 times.
• Reinstall the drum and toner.

This should do it.

its the drum or the toner. if you have an old toner run a test with it. If it clears up its the toner cartridge. If not its the drum unit. I sell the toner cartridges for 40 and drum for 65. Steven 818-888-0006

It depends upon the number of prints you have done since Feb and the toner cartridge capacity. Some toner cartridges have 2500 page capacity others have 5000 pages or more.
If you think you have not exceeded or reached the cartridge capacity, take it out of the printer and give it a shake in a horizontal position to distribute the toner evenly across the drum and place it back in the printer. This also works when the toner is nearly empty.

This Machine needs a copy cartridge. Replacing the toner will not clear it. The copy cartridge is the drum unit which is why the drum light is on. With the new copy cartridge a chip on the cartridge will reset the counter and clear the "CC" and the drum light. If you cant find this I can send you one. I believe on this model it is user replaceable.

Here is how to reset the photoconductor kit counter:

1. Make sure the new kit is installed and the printer is turned ON.

2. Open the front panel.

3. Hold the Cancel button in until the front panel LEDs flash.

4. Close the front panel

On the alarm and data light blinking, it is saying the toner cartridge is empty. You will need to replace it. Once in a while you can remove the toner cartridge and shake it and have it work for a little while longer. This does not work all the time however.
If you can't get it to work by shaking it, you will need to purchase a new toner cartridge.

When you have the new cartridge, you will need to slide the blue corona wire cleaner back and forth. This is just in front of the toner cartridge in the drum unit on the top of the drum unit. There is a small light blue colored piece of plastic with an arrow in it that you will just push back and forth. This will help the drum unit do its job better.

hold cancel button down with door open, this should rest it

All four lights flashing indicated a problem only a service center can repair.

Press the Go button and a new set of indicators will appear.

The yellow toner light only indicates a fuser unit failure.
The yellow drum light only indicates a laser unit failure.
The yellow toner light AND the red paper light indicates a main motor failure.
The red paper light only indicates a PCB failure (Printed Circuit Board).

The only thing you can do at this point is to actually UNPLUG the power cord for 24 hours and then retry or if that fails take it to a service center or better yet go pay the $89 for a new unit.



Hope this helps.