hp dj T790

**1stcavvet** · 09-26-2017

If I attach the cutter to this machine, it goes to the left side after a good print and tries to cut the paper--- travels about 5-6 inches from the left side the carrier stops and shows an 86.10 paper jam,(this is also happening with a new cutter assembly) if I remove the cutter the machine shows no problem.the machine prints and the customer has to manually cut the paper. I was thinking the rear bushing is probably gone and the carrier is dragging in the front -----Looking for any other ideas------ machine is 2-3 years old and hardly gets used

**theengel** · 09-26-2017

Have you cleaned and oiled the rail?

If the rail was dirty and causing a lot of resistance, then the added cutter resistance could be the straw that breaks the back and finally throws up the error.

**Kiran Otter** · 09-26-2017

Wow, I had this EXACT problem recently. I thought it was something to do with the belt so I started to replace it. When I removed the carriage, I realized the belt wasn't even attached to it! The carriage was broken where the two posts that hold the belt to the carriage were. How it worked at all... I don't know. I think this is a result of the end user trying to force the carriage to move, either during a jam or some other time.

When I showed it to HP, they said yup! They'd seen that before.

So maybe this is your problem.

Kiran

**Kiran Otter** · 09-26-2017

Also, note the correct position for the belt as it threads in the carriage.

**theengel** · 09-27-2017

Originally Posted by Kiran Otter

Wow, I had this EXACT problem recently. I thought it was something to do with the belt so I started to replace it. When I removed the carriage, I realized the belt wasn't even attached to it! The carriage was broken where the two posts that hold the belt to the carriage were. How it worked at all... I don't know. I think this is a result of the end user trying to force the carriage to move, either during a jam or some other time.

When I showed it to HP, they said yup! They'd seen that before.

So maybe this is your problem.

Kiran

I had one break there... but it wasn't moving at all. And I'm pretty sure it broke because the user was trying to force the carriage to move.

**Kiran Otter** · 10-17-2017

Any update on this, 1stcavvet? I'm curious what you found.

Kiran

**1stcavvet** · 10-17-2017

Yup!!! belt attaching area was broken the 2 outer lugs were missing, I took the carrier out of the machine and when I turned around with the carrier in my hand the belt fell on the floor I can't believe it would even print

**Kiran Otter** · 10-17-2017

Yeah, exactly what I had. Thanks for the update!

Kiran

**theengel** · 10-17-2017

I wonder if there's a way to repair those with some kind of clamp. The next time I run across this, I think I'll try. The problem is that aside from keeping the belt clamped down, those two posts also affect belt size because they make a little curve in the belt.