HAs anyone else had a problem of late with jams around the back side of the fuser causing the thermal fuse to blow?? We've had 4 this last month with blown fusers. Maybe just the weather changing, but it's an awful coincidence

Not any more recently, but I've seen a few here and there. I hadn't given it much thought.

Do you think it may have something to do with moisture/paper rigidity, or image fill? =^..^=

one for sure was fill, full bleed,both sides, all the others were "normal color" if there is such a thing. I have adjusted LEB for general purposes.

That's a good place to start. Don't forget duplex voids also. =^..^=

You mention the weather changing, I have had thermal fuse problems on other product families after thunderstorms roll through. Spikes on the line can melt those bad boys also with a marginal surge protector.

It's not storms or anything, but a very damp Autumn is already here in NW England,(not to mention a soggy summer). A lot of places here don't use heating at night, so 60's and damp during the day, high 40's and damp at night. This is a known issue over here, but the T/A's by the nature of their fuser design are more susceptible.

Do you have the cassette heaters On? =^..^=

I have had the same thing too. Had a C6200 and C6030 code and replaced the fuser. 3 days later, i have the same code and will not clear.
Also had paper wrap around rear roller. Just a normal text document.
Also, when you get the new fusing assy, there is a sheet that says, "adjust pressure in fuser"
WHAT THE >>LL is that. What do you set it to?
Any ideas?

The Fusers are shipped with the pressure "OFF" and you must apply the pressure by following the instructions included on the instruction sheet that is shipped with the new fuser. basically there is a long shoulder screw on each end of the fuser that needs tightened some so that the spring pressure is applied.