ir5570 faded areas

[ReproKev]

Anywhere from 1/4 to 1/2 page comes out very faded (ltr size second side of 2 sided mostly). Restrung all wires and replaced trans-sep corona assm (new). Still has the problem. About 1 out of every 5 copies has it.

Customer ran 2000 2 sided ltr-r with no problems today so it only happens on ltr size (weird?).

It started happening after I replaced the dc controller for an e-025 code (blown fuse). I installed a repaired board from Hytec, re-input door specs and made sure pot ctrl was on.

Any suggestions?


ir5570Sample.pdf
ir5570Sample.pdf

[Simons]

Re: ir5570 faded areas

If you still have the old board you could buy the fuse that blew. They are cheap. LMK if you want the info. You could put that back in after you replace the fuse. In and emergency you can paper clip that fuse or something

Which did you have a bad motor or stuck and wrongly inserted toner?

Drum been polished lately ?

[ReproKev]

Re: ir5570 faded areas

I had originally replaced the hopper feed motor which didn't fix the e-025, then the DC Con. I sent the old board back to Hytec before I knew of this new problem - I had only run a couple 2 sided copies after I put it in and they looked good. The Customer called about the light areas a week later (business was slow- not many 2 sided made that week).

i called Hytec and that specific board is not available to be repaired and sent back to me- possibly already sent to someone else or maybe they don't track it that well?

Before I purchase another repaired one and RMA this new one I was trying to see if something else could be causing the problem - maybe the door specs were printed wrong - I couldn't do a P print with the E-025, so I used door specs. I did adjust transfer voltages up/down with no effect.

The drum has not been polished lately. Machine has 1.6 mil on it and is serviced regularly. It seems to me that there is either something simple I'm missing or the DC Con is bad. Any other ideas?

[Simons]

Re: ir5570 faded areas

Potential control settings may be set in Dc Cont or caused change. Not sure on this one I would have to recheck. If you want the drum to last any longer, I would polish it. At 1.6 that would be a good source of light images!!! Also change coronas ( around a million ) when needed to prevent arcing and save the drum. Dont know what else could cause it. Intemittant problems like that are bad but usually voltage , laser related.

[Brian8506]

Re: ir5570 faded areas

I would be cheating the front door and watching the copy to see if separation is good. Have you looked at the dv unit. Even the good part of your sample looks grainy

[vigour]

Re: ir5570 faded areas

Adjust your second side Separation Current. SP-N2 to about 100

There is a hidden alternate adjustment, which adjusts separation for each separate paper source.
OPTION > Body >TR-SP-C1 (C2, C3,C4,DK)
You may have to adjust both

I have only used this twice in my career.

[ReproKev]

Re: ir5570 faded areas

The graininess of the sample is mainly due to a poor scan.

I did cheat the door switch and saw the paper laying flat across the sep area.

Customer has run 6-8 thousand 2 sided copies in the last 2 days - all ltr-r with no quality problems. Every time they run ltr size 2 sided they get the large faded areas within a few copies. Usually 2-3 every 10 copies.

I'll try playing with the voltage settings again and look to see if anything looks off in the options settings of service mode. Maybe I'll try reloading system software - I don't know if the new and old DC Con were the same versions. Worth a try anyway.

[canonbundy]

Re: ir5570 faded areas

Anywhere from 1/4 to 1/2 page comes out very faded (ltr size second side of 2 sided mostly). Restrung all wires and replaced trans-sep corona assm (new). Still has the problem. About 1 out of every 5 copies has it.

Customer ran 2000 2 sided ltr-r with no problems today so it only happens on ltr size (weird?).

It started happening after I replaced the dc controller for an e-025 code (blown fuse). I installed a repaired board from Hytec, re-input door specs and made sure pot ctrl was on.

Any suggestions?


[ATTACH=CONFIG]21769[/ATTACH]
[ATTACH=CONFIG]21769[/ATTACH]

Looks to me like a hesitation (buckle) as the paper enters the Fixing Unit or the T/Sep Unit is not set correctly - clean & polish the Transport ribs and the inlet Fuser Guides, in your POST you stated that the T/S Unit had been restrung - check the Stringing also the Black Cam (for breakage) which lifts the T/S Unit.