[Jamming] Panasonic uf-8000 j43 intermittent stops before fuser

[wingit]

Hi, wondering if I can get some help on this one, When I arrived I ran 5 copies and no problem, then ran 1 copy and paper stopped in the bite of the fuser rollers or just about in the bite 2mm between upper and lower rollers.Customer is using an non oem toner and the two sensors appear to be clean and no dumping or noises from drum-toner cartridge, j43 code comes up.now it jams 7 out of 10 times only running one sheet at a time. Any ideas? Thanks

[onetek]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

There's a good chance that your heat roller bearings are starting to seize.If so, heat roller gear breakage will be next....Th.

[mojorolla]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

I agree with onetek, sounds like the fuser. The fuser on the 190 and 8000 are known to fail. The press rolls winkle, the bearing go, or the drive gear gets cracked. You will need a long Philips screwdriver to get the fuser out. This one is not very fun.

[delboy10]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

Agree with onetek and mojorolla and I may add one other thing. You should also check the lower fuser frame because I also see this frame has a crack right in the middle where the exit actuator is when the fuser has higher meter click around 60k or 70k and up. It is a bit involve when you have to do fuser work on this machine so you want to make sure to replace every broken parts. One more thing to remember is when you put back the lamp make sure it is in the center of the heat roller because it tend to go off center when you have to tighten the screw which hold the lamp in place. The reason for this is to prevent the heat of the lamp close to the fuser gear which will create premature broken fuser gear.

delboy

[wingit]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

Great, Thanks for your response, So the lower sleeves are causing the fuser to spin slower and causing the timing to be affected. This fuser looks like a bear to replace, Since this is a charge call, I will inform client with 2 to 2.5 labor to do this job.
Thanks for all your help, I will post later,

[mjunkaged]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

Just about have to tear the entire machine apart to get fuser out on that one. Hope you're mighty fast, quoting only 2.5 total.

[wingit]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

I am looking at the Panny handbook, and I was not expecting a life of 85k on fuser, seems low. How about 3.5 to 4 hours. I appreciate your input on this one. The customer asked me what if that does'nt fix the problem. so I said, I will just charge you 1.5 labor, he did'nt like that,(I better rethink this one)The training I received at Minolta many Moons ago was OJT, and no one questioned it back then. Thanks Again

[mjunkaged]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

Time estimate is about right, the fuser should fix it if it's not a sensor or board problem.
It's almost always the fuser though. If you have an extra-long phillips (16" or better) I'd use that to get the one 'buried' fuser screw out.
If, when you get the unit out of the machine, it's buried in toner, then most likely someone said 'yes' instead of 'no' when asked if a new toner was installed. This would cause the machine to continue running until the waste area in the cartridge overflowed, ruining the fuser over time.

Every time the front door is opened and closed, the customer is asked 'toner replaced?' and if they lie or hit yes when they mean no, the machine will assume the toner is new and has an empty waste tank. I've seen customers do this deliberately to try to save money on toner. As much as a new fuser costs, they're not REALLY saving any money, just creating a service call for new fuser down the road.

If fuser doesn't fix it, I'd suggest upgrading them to a better machine if possible.

[wingit]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

Thanks mjunkaged
Thanks for the tip on the screwdriver, If it saves any time on the process thats a good thing. This customer likes the ADF/scanning runs well for them. Last panny I worked on was the uf-880, fuser was easier to remove that I can recall. Thanks again

[mojorolla]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

The fusers rarely last 85k. The DP-190 has an even higher failure rate. That hunk of dookie is only rated for 750 a month, but it is easier to get to.

[onetek]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

We have dozens of those 190's. Some fusers I had to replace at 30k copies. They fail more because of the time spent heating than the number of copies. Panasonic figured 85k for the fuser if you do 3 or 4 copies at a time, and energy saver is set at 15 minutes. Since most custommers set energy saver at 240 minutes and are low volume, fusers just cook away. Some of our accounts do 8k copies a month, and those usually get a fuser at 100k...
Th.

[Marku]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

This may sound stupid, but I have seen that problem caused by the rear stop guide in the cassette. Not cracked, but slipping.

The fuser usually tells you when it's freezing up, it screams.

[onetek]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

You are wright, I have seen that happen too. Also from second drawer when paper lift springs get weaker....
Th.

[wingit]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

I feed the paper thru the bypass (Manual feed) one at a time and the result was the same,(j43)eliminating the paper tray. The amount of fuser noise was not noticeable, I called the customer and they decided to call another sevice company. My quote may have scared him.Thank-You for all your comments.

[subaro]

Re: Panasonic uf-8000 j43 intermittent stops before fuser

Marku and onetec has the sloution on track. The fuser will make screaming noise if the gear is cracked and you will have to turn of the machine right away. sometimes when cust clear paper jam, the spring on one of the fingers will come loose and paper will jam there but crunch. If the paper is stoping before the fuser or just at the nip, it usually is the paper tray stopper moving as it is a weak design and it cracks and you must clean the pickup and feed roller properly. The mylar on the tray sep pad gets worn and i usually unstick it an move it up a notch. If you do replace the fuser, before you put back in the scanner and covers, put the cartridge in and the front door, and hook up the control panel and then print the fax parameter list. this will make sure that the fuser has no problems, and the paper path is ok. Also you don;t want to go back in only to find one of the fingers has slip of the spring. I have repaired lots of these machines and they are great machines, but their weak point is in the fuser and the early toner models.