I've read the instructions and tried it, but I'm beginning to think we have a "trick machine" I'm not the 1st to fight with this thing.
So, even though I've installed a new cartridge, the alarm light keeps flashing and the the display says BLACK INK EMPTY.
No it isn't.
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You just pull down the front cover that is just below where the copies come out of the machine. You will see the toner cartridge. It has a small "handle" on it. It just pulls out the front of the machine. Then just unpack the new one making sure to remove the seal tape if it is installed on your new toner. Then re-install the new cartridge and close the door. If you have your users manual for the machine, the instructions are in the manual. If you are using a OEM Canon toner cartridge I believe the instructions are included in the box.
Good Luck and Thank You for using Fixya.
try by buying a new cartridges like the one you use before and clean first the print head to remove the smodges. see also you manual for compatibilites and instructions. ill find another solutions if this wont help you.
Where did you get the toner cartridge? The TN-350 has one the side with the gearing what is called a flag gear. The "flag" presses a button in the machine to tell the machine a new cartridge has been installed. If your cartridge was an inexpensive one off the internet it may have not been reset and I would return it. It is easy to reset, but if it isn't done I would like to know what else they didn't do. If it is an OEM or you are assured of the quality there is a trick you can try.
Locate where the flag gear is, on the back of the cartridge on the geared side, and place a piece of electrical tape over where it should be. Reinstall the cartridge and wait for the error it will definately throw. After that remove the tape and reinstall the cartridge again. Hopefully that works.
It says there is no cartridge, or does it say that the cartridge is empty?
First, you must realize there are two cartridges. A drum and a toner.
If you bought a new toner, pulled out the drum and put the new toner
in, you have pulled a DOH! You can't just put the toner in. You have to
take your old drum cartridge, remove the toner portion and install the
new toner into your old drum and then install the entire assembly back
into the machine. I hope you didn't throw your drum out thinking it was
all one cartridge (I've seen it happen). This is where reading the
owner's manual helps.
If not, then one of the contacts must have been damaged. Remove the
cartridge and look inside the machine. See if you can find any of the
metal contacts on the side of the inner chamber that is bent or damaged
and try to bend it back.
Check the drum and make sure none of the contacts are damaged.
If the unit is still saying Toner Empty, try this. On the left side of
the toner there will be a while lever in a semi-circular notch.
Unplug the unit, use a small screwdriver or a key to push that white
lever back to the front of the notch. Put the drum and toner back into
the machine and plug the power back in.
Although you may not use the other colours the cleaning assembly cleans all the cartridges hence the other ink gets used.
To trick the machine into thinking there is ink in the cartridge, place some black tape over the top of each cartridge facing front of the machine. This fools the sensor into seeing no reflected light and reads that there is ink in the cartridges you do not use.
Pleas enote that if you do this on a long term basis it is liley the head will dry out and may damage the head - use this advise to get urgent prints out.