Panasonic DP4520 ... Fuser Web not advancing

[MPM2140]

I have a Panasonic DP4520, the fuser web is not advancing.
The web solenoid has been replaced... still not working.

[copiman]

Re: Panasonic DP4520 ... Fuser Web not advancing

Look at the drive gears for movement when the soleniod activates. Or better yet actuate with your hand. Its faster. If the gears are turning and the web is not, look at the one-ways in the gears. I think there may be a new style actuator, the one the solenoid activates. Maybe one of the older Pana techs can confirm this. Hope this helps. Oh, I am assuming the solenoid is functioning.

[JustManuals]

Re: Panasonic DP4520 ... Fuser Web not advancing

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[mojorolla]

Re: Panasonic DP4520 ... Fuser Web not advancing

Remove the web unit and rotate the gears by hand. You should hear a loud click. If you hear the click, check the drive gears themselves. If you do not hear the click, check the stopper arm on the slotted gear on the inside of the web.

You can also cheat the 2 front door switches and remove the fuser/toner holder cover. You can then watch the solenoid fire and see if the gears are moving. Depending on the setting in F5, it should fire every 5, 10, or 20 pages through the fuser.

[Logged-on]

Re: Panasonic DP4520 ... Fuser Web not advancing

There are a few things to check for the web advance. First you want to check the surface of the UFR. It can look nice and dark, but if you shine a light across it, you may notice that the teflon has worn off. That will impede the web's ability to advance. Next if the web has been replaced, it is possible that the plate was not fitted properly to the frame of the web assembly. I also give the one screw on either side of the web casing (the ones holding the plastic plates in place), to tighten the end plates to the fuser frame, that will cause them to woble (sp?) less, and let the web assembly slide more freely back and forth across the fuser frame. (If you notice the 2 screws securing the web assembly to the fuser are collar screws, and the web assembly should slide freely back and forth about 1/8th of an inch. On the front side of the web assembly, were the solenoid is, (the solenoid seldom fails), there are 2 1-way bearings. The first is on the lever, I believe the part number is dzjm000727, cleaning the 1 way, and the shaft can help, but I usually replaced them. Next if you take the plate that the solenoid is mounted on, (2 self tapping screws), there is a double gear there, it also has a 1-way bearing. Panasonic upgraded the part on the 80 series, the new part number is PJDGC0195z. That should take care of most of the mechanical issues, the only other thing I know is if you are using after market webs, they tend to use a thicker web material, and have caused some of the web drive units to malfunction, we went back to OEM webs. Hope thise helps, good luck!!

[sservice]

Re: Panasonic DP4520 ... Fuser Web not advancing

I have a Panasonic DP4520, the fuser web is not advancing.
The web solenoid has been replaced... still not working.

If you have visually verified the solenoid is not firing, then check the 2 pin connector the solenoid plugs into,
I have run into a couple of situations where the pins get pushed back into the connector and don't make
contact with the plug pins.