c450 fusers going bad. Could it be a gear?

[blackcat4866]

Thanks. There have been few accordian jams - none since I installed this newer 'used' fusder.

This machine runs mostly b&w, 12 x 18, 24# through the bypass. What I did notice is that when there is a jam about a 1/3 of the sheet is through the fuser. To remove the sheet, it is being pulled down (opposite the normal direction) You can hear the gears jump. Could the sheet be being removed wrong?

I did tear the machine down to the gear assembly and it all looks good from what I can tell.

Any help is really appreciated.
Thanks

As you know it's preferable to remove the jams in the paper feed direction, but sometimes it's just unavoidable to pull out a page against the feed direction. It doesn't do any damage to the gears. The risk is that one of the flags will poke through the paper, then that flag gets broken or dislodged as the paper is pulled. It's less likely on the 24#, since it's harder to pierce the heavier media.

You haven't mentioned leading edge voids or fill yet. Did you miss the point? =^..^=

[Richards]

As you know it's preferable to remove the jams in the paper feed direction, but sometimes it's just unavoidable to pull out a page against the feed direction. It doesn't do any damage to the gears. The risk is that one of the flags will poke through the paper, then that flag gets broken or dislodged as the paper is pulled. It's less likely on the 24#, since it's harder to pierce the heavier media.

You haven't mentioned leading edge voids or fill yet. Did you miss the point? =^..^=

Thanks for the reminder. I did not think the lead void area was the issue since there were few accordian jams. On second thought, HOWEVER, when using the 12 x 18, 24# paper there are registration marks that do not print entirely because they are too close to the edges. In addition, a 12 x 18 100# coated text sheet is printed sometimes (less than 10% of the total copies). These copies do have very large fill areas.

So how do I adjust the lead edge void area? Is it in the print area adjustment?

Many thanks

[blackcat4866]

Service Mode > Machine Adjust > PRT Area > Top Margin

Book specs are 5.0mm +/- 0.5mm. The heavier the fill, the larger the lead edge void that you'll need. =^..^=

[Richards]

Put a brand new fuser in. It ran about 20,000 copies and the fuser went bad again. The lower fuser roller peeled on the operators side. I understand that this model tends to not make its life expectancy, but 20M copies is too low - I would think.

Could it be getting too hot???? Sorry but I am new at this and frustrated.

Any help is appreciated!!! Thanks
Rich

[blackcat4866]

Put a brand new fuser in. It ran about 20,000 copies and the fuser went bad again. The lower fuser roller peeled on the operators side. I understand that this model tends to not make its life expectancy, but 20M copies is too low - I would think.

Could it be getting too hot???? Sorry but I am new at this and frustrated.

Any help is appreciated!!! Thanks
Rich

20K or 20M?

I'll tell you the same thing that I tell every customer that tells me the machine is running too hot. Did the thermal fuse blow? Then it's not too hot. Normal operating temperature is 180C or ~350F. It's hotter than your flesh ... but so what? =^..^=