I have Xerox XD100. Machine is very noise. The noise is coming from back of machine. Sand like motor is turning but something is stock (can not moveThis motor look like suppose to move)

You need to use a IEEE-1284 Compliant parallel cable for this machine. A "changer" will not work, sorry.

check the usb port boot computer and printer..or parallel to usb or usb to parallell try it..

hi,check power cord if the power cord correctly connected the problem is power supply.

and XD 100 will not work with a ethernet connection.

When you saying No working , What Happens when you press the print Button can you manually get this copier to print out ?

Has it stop printing only ?

Does the machine sit there and run and run and run. The motor turns on and just chugs away or simply the ready light flashes? Let me know which symptom so I can send you some things to try.

Most likely the fuser gear is worn. The noise is prominant in the right side toward the back I am assuming.
You can replace the heat roll drive gear itself, but honestly I would recommend replacing the entire fuser assembly. It is probably very very tight and would wear another gear out quickly.
You want to get that replaced before the drive gear on the main motor assembly wears out. It would not rewuire replacing that entire main drive assembly, But it is a real difficult part to replace.
Go onto google and do a search for The Parts Drop. It will be the first item to come up. CLick it on and call and talk to Britt.
He will have what you need for a reasonable price.
if you go that route and need instructions to replace that part. let me know. Its not very difficult.

Here's the Xerox link for your printer

Sounds like 2 different things going on.
The slow warm up is normally the toner cartridge is almost out of ink but not reporting it. It is trying to set up but there is not enough ink to do so.
The jams, if the machine is making it into the machine but not exiting, then you most likely have a broken gear on the end of the heat roller in the fuser

I have a XD100 Work Center with a L6 error code indication. After press "C" Clear (orange color button), followed by "Auto" (the most left small button) - exposure mode key; and "C" followed by "Auto" again, the copier starts to print and solved problem.