Canon IR3300 uneven density line 2" from trail edge of page.

[Desert Rat]

I pulled out the drum, dev and fuser to look for worn gears and or binding.
The drum seemed to turn harder than usual. I had replaced the drum with
a precision roller after market drum. That happened last March.
I usually don't have a problem with
their drums and blades. May be a bad batch? I wish I had thought to
re-powder the drum and blade while I was there yesterday.
On test target number 5 from service the problem shows up, and there are
a number of other smaller lines too. The half tone print was not a nice smooth
gray. This is the second or third time I have rebuilt this drum unit. Usually
I will replace the whole thing when I see little wear lines on the primary
charge roller. The developer and fuser units turned smooth. Transfer roller
also turns easy.
This problem shows up real good on a Katen target, the side with all lines
close together. I'll try to post a sample or two.

Anyone have a clue?

DR

[Desert Rat]

[blackcat4866]

Re: Canon IR3300 uneven density line 2" from trail edge of page.

This probably won't help you much, but there for a while I was buying these rebuild kits ... here are the instructions that came with it. There aren't any meter readings on the heater. I know I have written up diagnostics on some of these film fusers, just not this one. =^..^=

[Desert Rat]

Re: Canon IR3300 uneven density line 2" from trail edge of page.

Blackcat,
You're right they did not help much, but I saved them anyway in the file for advice and tips.
I will have to get a new heater and ohm it out for a reference. Once I do I will post the
results. It may help someone else.
Actually I'm surprised it hasn't already been done.

Thanks for the reply

DR

[techwurk]

Re: Canon IR3300 uneven density line 2" from trail edge of page.

E000 that does not reset, then replace upper fixing unit. Density problem you may want to try exposure lamp and / or laser unit. Good luck

[techwurk]

Re: Canon IR3300 uneven density line 2" from trail edge of page.

One more suggestion about the density issue. Check the mag roller for debris behind the doctor blade and wear to the roller. Try swapping out the DV unit with another one even if it looks good

[Desert Rat]

Re: Canon IR3300 uneven density line 2" from trail edge of page.

techwurk,
I have already swapped the developer unit out with no change to the copy quality.
I thought about the laser, it could cause this and may be the lamp also. First I have to
get another heater for the fuser unit. I suspect an open between the black power line
and the two white neutral lines. I'm getting an open reading between them.

DR

[techwurk]

Re: Canon IR3300 uneven density line 2" from trail edge of page.

ok, did you replace the drum unit with OEM. These 3300 / 3320 can be fickle with AM drum rebuilds. It would be an outside chance that it is a laser or exp lamp but never the less. I have replaced many of the upper fixing assy on these, Canon has them as a replacement which is just the upper assy with the film and is the best route to correct the E000 that does not reset. Good luck, interested to see what the fix ends up being.