Strange quality issue on DPC 266

[User Name]

I'm having this strange problem on a 266 at a church. When they print their 2-sided bulletins, there is a small section where there are voids in the prints always in the same area but only on the second side, the first side of the document and any singled-sided document come out fine. I've attached some examples below. The second page of each document would be the second side with the issue and ignore the lines on the side. Looks like I need to clean the glass on our machine.

You can see it in the black bar at the top.
doc00382720130304123436.pdf

And in the text of this document.
doc00382820130304123450.pdf

I tried switching the STR, switched the drums around to see if there was any change, and tried a new fuser but no improvement. I was just discussing the issue with another tech and I'm now thinking it's very likely something on the transfer belt. I haven't had it out yet to check it because I didn't think it was it but now I'm beginning to think it is. I'm just posting this to see if y'all concur. So, what do you guys think?

Thanks in advance!

[copiman]

Re: Strange quality issue on DPC 266

I would think the IT belt as well, since you have tried the other stuff. I assume they are using the same paper they have always used and it has been fine up until now? If so, and I had a machine with the xfer belt unit, I would take it out there and swap it out to see if it solved the problem. Then, if that did it, I would rebuild there unit and put it back in.

[JustManuals]

Re: Strange quality issue on DPC 266

If you send me an email to Paul@justmanuals.com, I'll send you a free copy of the service manual. Always willing to help out a non-profit.
Remember to tell me who you are.

Paul@justmanuals.com.

[User Name]

Re: Strange quality issue on DPC 266

I would think the IT belt as well, since you have tried the other stuff. I assume they are using the same paper they have always used and it has been fine up until now? If so, and I had a machine with the xfer belt unit, I would take it out there and swap it out to see if it solved the problem. Then, if that did it, I would rebuild there unit and put it back in.

I didn't think to ask about the paper and everything has been fine up until last week when they called. I went back to check the IT belt today and it seems fine. No real obvious marks or problems with the belt. I wish I had another belt unit to swap but this is the only machine of this series we have out there, unless a 264 is has the same IT Belt unit but I don't know. I have a maintenance kit, but it's a lot of work to rebuild the Belt unit if it's not really the problem.

If you send me an email to Paul@justmanuals.com, I'll send you a free copy of the service manual. Always willing to help out a non-profit.
Remember to tell me who you are.

Paul@justmanuals.com.

Thanks! I'm not sure how much help it'll be but it certainly couldn't hurt.

[copiman]

Re: Strange quality issue on DPC 266

I looked up the part #s and all is the same except for the last #s. PU3 vs PU1. I have never tried it so I'm not sure. maybe someone whos been around these for years would know.

[NIKROTAS]

Re: Strange quality issue on DPC 266

i have some questions, i haven't seen this again,
the problem is same at A3 size? you try a print test from F1 double side?

190.pdf

[User Name]

Re: Strange quality issue on DPC 266

I looked up the part #s and all is the same except for the last #s. PU3 vs PU1. I have never tried it so I'm not sure. maybe someone whos been around these for years would know.

I'm not sure if I'll try it or not. The problem seems to be gradually going away, so I'm going to go back when the church is running their next batch of bulletins and see what happens. I figure there's a small chance of it going away on it's own but I'll have to wait and see. The do run labels through the machine every so often so there could be something built up somewhere but I didn't see anything and I was pretty thorough when I was trying to diagnose the problem. Thanks for checking the numbers!

i have some questions, i haven't seen this again,
the problem is same at A3 size? you try a print test from F1 double side?

[ATTACH]19779[/ATTACH]

Is A3 equivalent to Ledger? I printed out some Ledger pages from F1 but nothing double-sided and I didn't see anything on the ledger prints but there wasn't much coverage on them so I'm not sure. I'll look into trying some more F1 print-outs when I go out to do some more troubleshooting.

[copiman]

Re: Strange quality issue on DPC 266

Just had a thought. Try going into service mode F1 and run #32,33,34, and 35. These will give you a solid page of each color. Its only one sided, but you can load them back in the paper tray and do it again to see if it shows on all or just one. Might be worth a try. Do you have a manual? If not, take Paul up on his offer. He is having a good day.

[mojorolla]

Re: Strange quality issue on DPC 266

If void only happens on second side, try this:
Go into service mode F5. Set F5-157 to MIN, MEDIUM is the default.

[User Name]

Re: Strange quality issue on DPC 266

If void only happens on second side, try this:
Go into service mode F5. Set F5-157 to MIN, MEDIUM is the default.

STR STD Current? Sounds promising. My first thought was that the issue was with the STR so I'll give this a try.

Thanks!

[mojorolla]

Re: Strange quality issue on DPC 266

After zooming in on the examples you posted, I would think it is a dirty or bad roller inside the IT belt.
The F5 setting is a known issue for voids on the second side.

[User Name]

Re: Strange quality issue on DPC 266

If void only happens on second side, try this:
Go into service mode F5. Set F5-157 to MIN, MEDIUM is the default.

^This fixed it.

The F5 setting is a known issue for voids on the second side.

So, what did that setting do exactly? I know it had to to with the second transfer roller but what does STD stand for? (I know what it doesn't stand for in this case ) It lowered the amount of charge in the STR, maybe?

In any case, Thanks so much for advice! I didn't know about that F5 setting and I don't know how long it would have taken me to figure it out without the help. You sir, are awesome!