AR-M 237 copies have smeared look . Read chain of events below.

[axyun]

Customer called with u2-40 after changing toner cartridge. Don't know if it was immediate or after making some copies. I brought a replacement cartridge and machine was working. These are OEM cartridges. Next day customer called about a lot of smearing of image on copies. I have attached copy for you to see.
I swapped the cartridge again and it started working okay. The next day after about 300 copies the smearing was back. I cleaned the main charger and the copies were back to normal . I ran 300 copies of a test sheet and all were good. This morning I received another call that smearing was back.
It just looks smeared but has nothing to do with fuser as image is fused and it had that look before reaching fuser as I had stopped machine in cycle. I guess if i swap process unit and dv unit it will take care of problem but I want to identify the specific cause. What bothers me is i did 2 different things and each one brought copies back to normal. I have gotten bad copies before but this has that contamination type look but if developer was contaminated I don't see how doing what I did would have changed anything.Would like to get some input. Frank/ActionPhotocopy

[blazebusiness]

Re: AR-M 237 copies have smeared look . Read chain of events below.

Customer called with u2-40 after changing toner cartridge. Don't know if it was immediate or after making some copies. I brought a replacement cartridge and machine was working. These are OEM cartridges. Next day customer called about a lot of smearing of image on copies. I have attached copy for you to see.
I swapped the cartridge again and it started working okay. The next day after about 300 copies the smearing was back. I cleaned the main charger and the copies were back to normal . I ran 300 copies of a test sheet and all were good. This morning I received another call that smearing was back.
It just looks smeared but has nothing to do with fuser as image is fused and it had that look before reaching fuser as I had stopped machine in cycle. I guess if i swap process unit and dv unit it will take care of problem but I want to identify the specific cause. What bothers me is i did 2 different things and each one brought copies back to normal. I have gotten bad copies before but this has that contamination type look but if developer was contaminated I don't see how doing what I did would have changed anything.Would like to get some input. Frank/ActionPhotocopy

As far as the U2-40 code(reset with sim 16)---if it keeps reoccuring -you could try a good surge protector/line conditioner or the power supply pcb. CQ problem certainly looks like dv unit or charge problem but maybe related to problem with power since you also had a u2 code.
My gut says go with dv unit.(book says dv contacts or replace crum chip) Also bracket gets bent sometimes when inserting toner cartridge.

[blazebusiness]

Re: AR-M 237 copies have smeared look . Read chain of events below.

If the u2 code and the copy quality problem are not related.....try cleaning toner density sensor in dv unit or replace developer and run sim 25-2 or something is up with main charge unit. Let us know what fixes your problem.

[DavePo]

Re: AR-M 237 copies have smeared look . Read chain of events below.

Also look at the plate under the drum unit that needs removed to change feed rollers. Have seen where the screwsare either not tightened completely or the screw holes blow out. The plate then rises up and the mylar rubs the drum before transfer. If the holes are blown out you will need to replace the lower frame.(PITA)

[blackcat4866]

Re: AR-M 237 copies have smeared look . Read chain of events below.

I agree with blaze. It looks like developing to me. Perhaps a bad developer bearing or contact. The developer doesn't look that great either. =^..^=

[axyun]

Re: AR-M 237 copies have smeared look . Read chain of events below.

Thanks guys . I am going in morning with developer and process unit. After cleaning the charge unit I ran 300 copies that were very good which to me might exclude the developer itself though not dv unit. If developer is bad I don't see getting several hundred very good copies then smeared look one then back to very good. If developer is bad it is bad for all copies I would think. Frank

[NeoMatrix]

Re: AR-M 237 copies have smeared look . Read chain of events below.

I agree with blaze. It looks like developing to me. Perhaps a bad developer bearing or contact. The developer doesn't look that great either. =^..^=

Looks like a dev bias fault.
I believe BC. has it correct....
Also check for iron filings or staples in the Dev unit. If you clean the Dev roller with sand paper, metal filings can build on/around the Doc blade causing a bias short on some machines.

[axyun]

Re: AR-M 237 copies have smeared look . Read chain of events below.

I returned to customer this morning and swapped dv unit and put in new developer and executed 25/02 successfully. Copies are excellent. Will have to wait a week or 2 before I am confident that problem is resolved. I will test customer's dv unit in another machine when I reassemble it any year now. If it was the developer or dv unit I will post the information on this thread. I hope every has a great holiday and a healthy and prosperous new year. Thanks for your help Frank

[blackcat4866]

Re: AR-M 237 copies have smeared look . Read chain of events below.

Congratulations, Axyun! =^..^=

[axyun]

Re: AR-M 237 copies have smeared look . Read chain of events below.

Here we go again. Customer called tuesday morning and said smearing was back though not as bad. I went there and machine was working. Customer showed me one copy with a smear on 2 lines though before it was always almost entire page. I couldn't test like I wanted cause machine was working so I just swapped out process unit and will wait again. I was last there 12/21 but customer only did about 100 copies. They normally a couple of hundred a day. Frank

[divad2k1]

Re: AR-M 237 copies have smeared look . Read chain of events below.

Had a similar problem with a arm237 past summer, not exactly like yours since i had only a smeared 2 inches band. Changed everything but customer kept calling back. Taking out the units and putting them back in made the problem disappear for a few days.

Found out that the seal on the dv unit was getting in the path of the laser so i had to cut a few mm out of it.

[axyun]

Re: AR-M 237 copies have smeared look . Read chain of events below.

That is very interesting. I will keep it in mind.Thank you. Frank

[axyun]

Re: AR-M 237 copies have smeared look . Read chain of events below.

Cust called this morn and said smearing,smudging "worse than ever" is back. I have changed the developer unit and put in new developer. I have installed new process unit w new drum. I am going there this afternoon and will check all in back and plate and mylar under drum etc. This is driving me nuts. I may consider getting customer another machine if this keeps up. Customer for a long time(over 20 years) and a lot of joking around at first but now everything is serious. Frank

[pjdbm]

Re: AR-M 237 copies have smeared look . Read chain of events below.

Frank,I switched to Kyocera from Sharp for many of these reasons.

You can get a cs2550 or cs2560 and they will love you.

[glewisme]

Re: AR-M 237 copies have smeared look . Read chain of events below.

Hi There,
This is in a Sharp bulliten. I ran into this a few times and it always seemed to be worse in the AM . Try this!
MFP-TB-178
Replace the toner protect seal. I actually had one that continued after replacing it with the updated one so I removed it 2 years ago no issues since!!!