Phaser 850 jamming every time. Help!

[ibuddy2u]

Have a Phaser 850 which has started a paper jam as it leaves the pick guide assembly and enters the drum/paper preheat assembly. It gets about half way in and stops.

Originally it would not get past the pick guide assembly but after substituting a number of items it's found it's way to the preheat assembly.

I have cleaned the paper pick roller, the lower feed rollers, and the pick guide assembly.

I have substituted known good parts including the drum/heater assembly, the upper feed assembly, the pick roller clutch, the drum maintenance clutch (for the 850).

I also found the clutch cap/wipe/purge getting VERY hot and exchanged it also.

The printer feeds paper without a jam through the manual tray.

It just will not feed from the standard tray without jamming.

I've search this forum and attempted everything I could find as a possible solution.

Please help.

 

[jdwvw]

Printer is fixed. This is from annother post from Ibuddy.

Xerox had a service bulletin out September 2000 that recommended replacing the upper feed assembly. I did that fairly early on and failed to list it in my post.

The more I worked with the unit the more it pointed to that so I replaced it a second time with a new one and it cured the jamming.

Thanks very much for the assistance.

 

[jb4home]

help- have a similar problem....

850 jamming all the time....
and now has a sheet of paper wrapped around the pre-heater...
won't clear with a thick-sheet push-thru

what's the easiest way to get it out...
how much of this needs to be disassembled to get the pre-heater/roller
out?

tks
jb

 

[jdwvw]

The preheater doesnt have any rollers. Which roller in relationship to the printer has paper wrapped around it.

 

[Jchu]

Try replacing the maintenance drawer. The side of the rod that lifts the maintenance roller gets worn and cause it from oiling the drum. (p/n: 436-0359-01)