Toner Low Light

First of all dirty rollers are not the cause of your problem as long as the printer is picking up the paper.
Black marks or streaks on a DELL 1700 series printer are usually caused by the drum assembly which, in this model, is separate from the toner cartridge. There is no repair, you need to replace the drum assembly and perform the drum reset procedure. In very rare cases a buildup of residual toner on the fuser can cause marks as well, but I have never seen this on a DELL printer.
To replace the drum:
1. After removing the paper tray, open the front of the printer.
2. Remove the toner cartridge by pushing down on the black release tab and pulling the toner up and out of the printer.
3. Pull the drum assembly straight out of the printer using the blue plastic handle.
4. Carefully unpack the new assembly and install in the printer. Be careful not to touch the photo-sensitive roller underneath.
5. Reinstall the toner cartridge, close the printer and insert the paper tray.
6. Perform the drum reset procedure exactly as follows:

power off and open front door hold down the continue button as you power on printer leaving front door open when error light comes on release continue and close front door. toner low, load paper, ready, and continue will all be lit. press cancel slowly 4 times or until just toner low lights up. each time you press cancel, the light sequence should change when just toner low is lit, press and hold continue button until lights cycle up and down in sequence. release continue.. toner low will be lit again turn printer off, wait 10 secs or so and then back on press continue button to print off settings page and check under cartridge information, photoconductor value is 0K (zero)

Have you tried to replace the toner???? Are you sure the light that is blinking for the toner?????

Like most laser printers, the toner light comes on early. This gives you time to order new toner. I find it best, since it does not stop the printer from printing, just to have a toner on hand and when your toner is empty replace it. Since this is a mesurement inside the toner cartridge its self, there is no way to reset the warning (other than replace the cartridge).

Solution: If you replace the toner cartridge and the 'Toner Low' message remains, the printer may need to be reset.
To do so, power off the printer. Let it sit 20 to 40 seconds, then power it back on. If the 'Toner Low' message does not appear on power-up, try printing again.
If the 'Toner Low' message returns on power-up or when printing, confirm the following:

• The toner cartridge you just installed is a brand new toner cartridge and not a used one.
• The toner cartridge is an original Lexmark brand toner cartridge. Cartridges manufactured by a third party may not be compatible with the printer.
  If a third-party cartridge is causing this issue, contact the point of purchase for additional support or replacement of the toner cartridge.
• The toner cartridge has not been refilled or refurbished by a third party. If it has, contact the place where it was refilled to have it replaced.

Still Need Help? Should you confirm all the above and the 'Toner Low' message remains, have the following available when calling Lexmark Technical Support;

• Printer model(s)
• Printer serial number
• Toner/imaging unit/waste toner bottle part number and serial number

This light is indeed designed to indicate a low toner condition. Its coming on is triggered not by the actual level of toner in the cartridge, but by a software process that estimates toner use. If you are inclined to refill your own cartridges, you can use install a glass fuse in the little clip on the back of the toner cartridge that will reset the counter, and turn out the light, otherwise the light will stay on. The reset process will blow the fuse, so a new fuse is needed each time a cartridge is refilled. Leaving the light lit does not hinder the operation of the printer, so as long as there is still sufficient toner to print, the printer will operate normally.

There is a toner sensor in this printer that shoots a beam of light through the toner cartridge. As long as the toner is full and blocks the light, it sees it as being full. If it were the sensor, it would tell you this for all the toners, though. The printer also calculates how much toner may have been used and gives warnings based on that. It could be that this isn't getting reset after you change toner. You can reset the toner gage by going into the reset menu and selecting "New xxxx cartridge" and changing it to YES.

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.

Just refilling the cartridge may not resolve the low toner message. Many cartridges have a sensor chip that must be reset to clear the message. Due to this, many people opt to buy replacements or refurbished cartridges that have had the sensor chip reset.

Is this an after market toner cartridge? I've had bad ones straight out of the box. Have you replaced one before on this printer? Ray