arm355/455 background

[harleyrider]

I have a couple of these starting to give problems with a slight gray background. You can replace developer and or developer unit and problem goes away for a month or so. Was wondering if anyone else is seeing this. Allmost like a bad toner issue. Yes all supplies are OEM. May be time to break out the meter and double check voltages. Will be nice when all of this series is gone.Thanks in advance.

[dannydub]

Re: arm355/455 background

You are cailbrating the developer,test command 25-02 i think from memory.also a new drum and number 1 corona unit always helps with copy quailty problems on these devices.

[Akitu]

Re: arm355/455 background

If your charge roller hasn't been changed out, that would be a great place to start. Once they wear down they'll start causing background exactly like what you're having now.

[harleyrider]

Re: arm355/455 background

If by charge roller you are talking about the transfer roller yep replaced every 200K. Everything looks good just a little "background". Thanks

[Akitu]

Re: arm355/455 background

If by charge roller you are talking about the transfer roller yep replaced every 200K. Everything looks good just a little "background". Thanks

Yeah, that's what I was referring to. When you replace the roller, do you use the 455KB kit or the part number for the roller exclusively? There's a replacement sawtooth grid in the kit that needs to be done with the roller.

[harleyrider]

Re: arm355/455 background

Down here the kit # is AR-455KA1.It comes with the discharge saw tooth included. It seems like they just gets a little overtoned hence the slight background. Thanks.

[Akitu]

Re: arm355/455 background

Down here the kit # is AR-455KA1.It comes with the discharge saw tooth included. It seems like they just gets a little overtoned hence the slight background. Thanks.

Yeah, unfortunately there's a number of things that cause these machines to throw background. Just offering up some suggestions! What exactly have you changed out aside from dev/drum?

[harleyrider]

Re: arm355/455 background

Thanks man. Have tried the normal things-Process unit,drum, dv unit,good cleaning,corona ass"y. Problem is one of them is a hour away of coarse. Just lookin for things to take with. The 2 that I have seen are in clean offices etc. Kind of thinking maybe LSU or high voltage/bias.

[divad2k1]

Re: arm355/455 background

What value did you get after you did sim 25-2 ?

[rh112]

Re: arm355/455 background

In last 2-3 months we started seeing the same thing.
Have replaced complete process unit, new drum ,developer and transfer unit also in 2 units we replaced developer tank .
All firmware up to date when developer is replaced and run 25-2 it is in range of 89 to mid 90s. All parts and supplies are OEM
We have several at one location that have ran so well for so long until this started.
In past majority ran PM to PM without issue
I am beginning to think we have a developer or toner issue.

[divad2k1]

Re: arm355/455 background

Try to manually set dv reference to 105 (sim 80) after new dv is installed and 25-2 has been done. This fix worked out for me.

[Silvertoast]

Re: arm355/455 background

run you finger down the mag roller to clean off an area, if it is gray instead of shiny silver. the mag roller will need to be cleaned. after awhile the mag rollers will get coated and have to be scrubbed clean with a scotch brite pad or like. after cleaning be sure to vacumn out the dv unit to get any strands of the cleaning pad out.
when the mag roller is coated it will cause a gray background

[harleyrider]

Re: arm355/455 background

Thanks for the sugestions. Silvertoast I have seen that and done that many times. This one machine has a new dv unit. I will try the sim 80 etc. Thanks again guys.

[Akitu]

Re: arm355/455 background

It's been over a year since I had to do a maintenance on one of these things, so I've evidently forgotten something. Fortunately there's someone watching out for us who reminded me that it's critical on these machines to reset the drum and dev rotation counters in sim 24-11 as well as the drum/dev reset in 24-5 and 24-7.

RESET THE ROTATION COUNTERS!

Also - make sure your PCU firmware is V2.0 or higher, it reduces drum rotation start time and therefore produces less waste toner.

In regards to cleaning off the mag roller after some toner bakes onto the surface, you can actually just use a folded up piece of paper. A lot less risk of damage as opposed to scotch brite or something similar. I do it all the time on Ricoh MP4000 model machines (4000, 4001, 4002).

[harleyrider]

Re: arm355/455 background

Yeh I have to do PMs on these pieces of crap most of the time and I do reset those counters. I am not sure about sim 80. I don't see it in the manual but I kind of remember something about it when the 350's first came out.