J1 error code, we have changed the toner and it is still there

J1 code on the XD100 series means that your toner cartridge is empty. You will need to order in a new one or have your existing cartridge refilled. Refills run about $60.00 and new ones are in the $100 to $125 range.
Precisionroller.com has a very good remanufactured unit for $46.00
http://www.precisionroller.com/search.php?q=xd100+toner

Good Luck and Thank You for using Fixya.
WheatlandServices

that is the toner cartridge empty

I’m happy to help further over the phone at https://www.6ya.com/expert/ron_9356d26241d4cbf7

This means its time to replace the Toner cartridge.

J1 means your machine has detected an empty toner cartridge.
You may be able to shake it and get some more copies out of it. but on that machine J1 is pretty accurate.

Make sure you have the right code: J1 or J2.
one is for the drum and the other is for the ink.
Make sure the toner unit is for this model and not for a different model.
If the old modual is still available, check the connectors at the back and see if they are the same.
If anything else Call Xerox for repair. If the cartridge was bought through Xerox have your reciete available for warrenty.
If repairs still need to be made, A Xerox service call may be needed in order to fully repair the copier and warrenty the cartridge.

a J1 means that you are low on toner, try another toner cartridge.

J1 is detecting either a low or out of toner condition.
Maybe just need to have the cartridge shook, replaced or it could lastly need the toner sensor replaced.

replace the toner cartridge

The J1 error means the toner cartridge needs to be replaced. Since you just replaced the cartridge, you should remove the cartridge and repeat the following steps.. Shake the new toner cartridge horizontally four or five times and then remove the cover. Slide the new toner cartridge in until it locks in place. It sounds like the cover may still be on the cartridge.

J1 means paper jam...so find it where the paper jam ecsactly...thanks