Km 6030-faint image

[Donnie]

Re: Km 6030-faint image

Thank you, I guess, I hate not knowing the fix for certain but as long as machine is working and customer is happy I won't complain. Now if you could help me with 4020 printer?

[mossup]

Re: Km 6030-faint image

On going problem we can't seem to solve, very light image, tech has replaced dv unit image came back ,but did not last, rear frame of image formation section because of worn contact, toner cartridge drive assy, after drive assy tech thought problem was solved because he had ran several hundred test pages without issue, customer called back next day with same problem. Tech is sure there is no formation on drum. No add toner light , if dv unit is not driving would toner light be on? Anyone seen this? I am scheduled to visit customer Friday. Thank you in advance.

Have a 820i with same problem, what is the mag roller like when it runs faint?, have one that goes faint and when i checked mag roller hardly any toner on it ,seems to be lack of toner so thinking toner motor , replaced dev unit ,dv bias ground plate and dev drive frame . vac out devunit and 130 it then prints are fine, but it then comes back in for faint copies and yet again no toner on mag roller.going to try toner motor next and take along pt unit as well.

[Donnie]

Re: Km 6030-faint image

Have a 820i with same problem, what is the mag roller like when it runs faint?, have one that goes faint and when i checked mag roller hardly any toner on it ,seems to be lack of toner so thinking toner motor , replaced dev unit ,dv bias ground plate and dev drive frame . vac out devunit and 130 it then prints are fine, but it then comes back in for faint copies and yet again no toner on mag roller.going to try toner motor next and take along pt unit as well.

We have struggled with this problem also. Same symptoms. Once all of the obvious have been checked(MC assy, dv tab,ptc,transfer belt and rear guide, dv unit. It gets tough. One of the earlier posts suggest removing the pt corona to test. I would think image should come back immediately if that is the problem. If it is the toner add system I never see it asking for toner or image cycling. It looked at an 820 on Tues. that would fade out in middle of print. You could see it on dv brush. The tab looked fine, had a slight bend but not worn off. I did go ahead and replace it. I removed ptc but same symptom. Dv had few prints on it and I did not have one. I removed cover and made sure wire arm was contacting sensor. It looked as though toner was building up in the area behind the doctor blade where it was fading out. I cleaned it out with a feeler gauge. Put it back together. Ran it pretty good. It's been working since then. If they call back a dv unit will be replaced, although we haven"t had these units fix the problem very often. The 6030 that started post has been working correctly. We have had a hard drive call since then but I don't think they were related. It has kept consistent fill. I have not had to replace a toner motor assy, but one of our other techs has. But I still don't think it was asking for toner. I don't know why? When the dv unit goes completely blank how come it doesn't ask for toner? Arcing. Be sure an keep the filters on back cover replaced on schedule. We have had issues when they were neglected.
I guess the problem could be any one of these things. Good Luck.

[blackcat4866]

Re: Km 6030-faint image

We have struggled with this problem also. ... I removed cover and made sure wire arm was contacting sensor. It looked as though toner was building up in the area behind the doctor blade where it was fading out. I cleaned it out with a feeler gauge. Put it back together. Ran it pretty good. It's been working since then. ...

Did we talk about toner? If your toner is clumping in the developing unit you could be having a problem with high humidity, high internal machine temperature, or generic toner.

Humidity? I don't know what you'll be able to do about that, but measure and document. Check your readings against machine specs.
Internal temperature? Do you have a temperature sensing thermocouple for your meter? Check the fans for function and clean filters. Or something environmental like being pushed up against a radiator.
Generic toner? Try OEM. =^..^=

[mossup]

Re: Km 6030-faint image

Did we talk about toner? If your toner is clumping in the developing unit you could be having a problem with high humidity, high internal machine temperature, or generic toner.

Humidity? I don't know what you'll be able to do about that, but measure and document. Check your readings against machine specs.
Internal temperature? Do you have a temperature sensing thermocouple for your meter? Check the fans for function and clean filters. Or something environmental like being pushed up against a radiator.
Generic toner? Try OEM. =^..^=

Thanks for all the input gives me alot more to go on, does seem to be starving the dev unit of toner , the machine i have sits along side another 820i which runs fine (apart from multifeeding from tray2 but thats another thread lol) they are quite high mileage 3.6 million but serviced to the book and in fairness have been fantastic machines. Had pm kit fitted about 2 weeks ago another dev unit about 1 week ago thinking it was dev unit , havent checked fans so will check on next visit. I even blamed the customer for not shaking the toner container. Now just waiting to hear back.

[Max]

Re: Km 6030-faint image

I would change the charge grid. That has been my fix on a lot of image issues with these machines.

No charge would give you a solid black copy

[mossup]

Re: Km 6030-faint image

On going problem we can't seem to solve, very light image, tech has replaced dv unit image came back ,but did not last, rear frame of image formation section because of worn contact, toner cartridge drive assy, after drive assy tech thought problem was solved because he had ran several hundred test pages without issue, customer called back next day with same problem. Tech is sure there is no formation on drum. No add toner light , if dv unit is not driving would toner light be on? Anyone seen this? I am scheduled to visit customer Friday. Thank you in advance.

I ve been back today for same problem , mag roller again starved of toner! , this time i have noticed the toner cartridge was nearly out and had toner low on the display, replaced toner cartridge, 130, bang CQ back all good. Machine works hard done 20 k yesterday and 100k since my last visit, maybe machine just cant keep up with toner supply on high volume machines. Is it only machines that are worked hard ?

[blackcat4866]

Re: Km 6030-faint image

I had this discussion with tmaged the other day. His tech rep had suggested changing a setting in simulation ... I don't remember what, but it solved his problem. Tmaged was having a problem with the toner motor running continuously, packing the developing unit full, seeping out the seams. Maybe the same?

What was the simulation, tmaged? =^..^=

[Toner Boy]

Re: Km 6030-faint image

I had this problem on a KM-8030 today (for the second time on this machine, replacing the developer unit was the fix last time -after replacing the toner drive mechanism which did NOT fix it). Got about 450K out of it and now its happening again...starving DV unit - you can manually add toner with sim U135 and it will work fine for a while but eventually will starve the DV unit again with NO request for toner. We looked at the toner sensor, a small spring is supposed to clean the surface of it attached to the mixing auger so we bent it a little to add a little more pressure, ran out of time and added toner with U135 but I'm sure we'll be back again.
Looked briefly at sim U147 but was uneasy about changing settings without detailed knowledge, machine is far away.
Suspecting a bad toner sensor in DV unit but that would be too easy right; especially since there is no part number in my guide. Checked sim U137 for DLP Sensor and it seemed to flicker to white 2 times, guess that means inactive?

[Donnie]

Re: Km 6030-faint image

When you took the cover off of the dv unit. Was it empty? I have seen issues where no brush but unit was not empty. Make sure you have checked the pt corona assy, dv tab, also make sure your filters on rear cover are not stopped up.

[copymech]

The piezio electric sensor in the dev units are loosely mounted and sometimes don't get cleaned by the scraper wire. I stick a piece of paper between the sensor and mount to move it toward the cleaning wire. Now the sensor will ask for toner when needed.