HP LJ 4555 Jamming from Accessory Tray

[Bigjimfanning]

We sent a third party tech out to service a machine for one of my clients. It is a LJ 4555fskm. The machine was jamming out of trays 3, 4 and 5 but not every time. In a job of 50 pages it will jam twice, sometimes pulling an additional blank page underneath the first page. When putting paper in tray 2 it will print all day long without a single jam. Thinking it is probably something with the base accessory, we sent them another tray. The replacement tray did not have 3, 4 & 5 but just one additional 500 sheet feeder with a cabinet underneath. The tech got it in place and it did the same exact thing. It will jam two or three times on a 50 page test. 

One page was crinkled near the output assembly which made me think it could be this but it is not jamming when printing CRM Tray 2 at all using the same paper path.

The fact that the issue was not resolved by a replacement tray makes me believe that something else is going on.

The problem is that I am in Dallas and the tech is in Indianapolis, so it’s hard for me to actually see what is going on. I have no doubt if the machine was in Dallas and we were able to see what the jams look like we would be able to resolve. However, the circumstances are such that every time I send the tech out it is around $160 with no results. The tech is clueless about where to go from here. Meanwhile, we just paid a bunch of money for an additional tray + shipping that we can’t bill the client for because it did not resolve the problem. 

The replacement tray tray was refurbished so I considered that it could be defective, however, it is highly unlikely for both the old and the new to be having the identical problem. 

Any direction would be much appreciated. 

FYI, the printer has the latest firmware and new feed rollers. 

[Repairatrooper]

What are the error codes in the logs?

[SITHLORD94]

The error codes are as follows:

13.B2.D5 Late to registration jam. There are about 30 of them on the error log.

13.B2.A5 Stopped at registration jam, from tray 4

13.B2AD Stopped at registration jam, from duplexer

[Repairatrooper]

That the jams only occur from trays 3,4,5 suggests that the issues is the bottom feeder, which you stated was already replaced. The errors are late arrival, usually caused by mispicks or junk in the paper path. I would have your tech check to make sure that there is nothing on the bottom of the main body of the printer where the paper feeds from the lower trays to the main body.

[Bigjimfanning]

Thank You. I will have him take a look at it.