Dell 1720dn Error and Toner light on

Change your toner cartridge. A properly working toner cartridge will never leave that much toner lying around. The white lines are an indication that either the toner is low, or the mag roller is defective.

if the imaging drum has been replaced already, you may have to reset the counter for it. To reset its counter, press and hold the CANCEL button until all lights flash in sequence, after that, you may need to turn off and turn on the printer and test it again..

I Open my browser....I signed in to my router as administrator ....
Mine is 192.168.1.1 ....
I went to status in my router ....
Then to local network ....
Then to DHCP Clients Table ....
This is how I found what printer address the was.... Then I typed the printer ip address into my browser
Mine happened to be 192.168.1.105 ....
Yours will probably be different....That got me to the 1720dn printer menu ....I clicked on Configuration ....
I clicked on Print Server Settings
I clicked on TCP/IP
I clicked on Set static IP address.
I changed IP address from 192.168.1.105 To 192.168.1.125
and Submit....Now you can get to the printer menu at 192.168.1.125

Go to run....
Printers & Faxes
Right click on Dell laser printer 1720dn
Properties. Ports ....
Add port ....
Double click on Dell Enhanced TCP/IP ....
I named the port My dell laser 1720 dn....Where it said enter a single IP address or host name I entered the new address 192.168.1.125
the clicked OK ....

Right click on Dell laser printer 1720dn
Properties....Ports
Choose your new port ....

This is usually due to a dirty imaging drum roller (green roller below toner). Remove the toner / drum assembly, then separate the two. Now slowly rotate the imaging drum roller by hand using the gear on the side of the cartridge (Try not to not touch the drum roller with your hand, as oils from your skin may cause further problems + toner is nasty) Look for toner splotches to the left and right on the drum roller as you turn it. If you see any you can clean them off with a damp paper towel. Then reassemble the printer and hold the continue button down until you hear the printer start then release it; this will print a test page.. Hopefully that will take care of the issue. Also while you got the assembly out of the printer you can clean the glass print-head lens using a clean, dry, and lint free cloth. The print head lense is located within the recessed area in the top of the printer.

- I have seen that happen to a bunch of those printers and that is usually all it is. Let me know if that takes care of it.

Picture of Drum + Print Head lense for a (1720 / 1720DN).
Link to Dell manual about drum & print head.

(Full link below)

(http://www.support.dell.com/support/edocs/systems/prn1720/en/1720_en/en/d0e4183.html#replacing-the-imaging-drum)

Open front cover. Press and hold the 'CANCEL' button ( X ) until all lights flash in sequence. Close the front cover.

I believe this message is occur because the laser printer drum needs to be replaced, not the toner cartridge.

These are two different things. The part is a DELL 310-8710 Drum Unit. Just google DELL 1720N drum and you should be able to find one.

Call Dell and get the drum count reset instructions. They should tell people this info...but neglect to. :P

Follow this link to a previous FixYa post about this error and the suggested solution.

You have to reset the drum count on the printer after you replace the drum. Call dell tech support they will not charge you for help resetting the drum even if you are not in warrenty.

Replacing the drum should fix this issue. The PC drum, aka, photoconductive drum, is light sensitive, if it has been exposed long enough to light, it can cause this problem.