tone marks Ricoh 2090

[captkirk]

We have a Ricoh 2090 that started having tone marks on the operators side of the machine. The first 10 copies out of the machine are fine but it starts toning on one side. We have installed a new transfer belt , a new drum blade, new developer, and it has a fairly new drum. When we pull the drum unit out it is covered in toner. We have to clean it often.
We also have lowered the toner supply rate.
I have attached a copy of what it looks like after about 50 copies.
Any ideas?

[Shadow1]

Typical of buildup on the Mag Roller. Did you scrub it down when you changed developer?

Quenching lamps would be my next most likely suspect.

[schooltech]

It actually looks like a problem I had once with an aftermarket drum. It took quite a while to figure that one out.

I have also seen something like this when the developer unit is going bad (worn out) but it displays marks more throughout the page rather than just at the beginning. That's closer to 2 million copies.

When you say that the drum is covered in toner, is the drum almost black like there is no charge, or has a light dusting like the cleaning blade is not cleaning it all off? Do you have a new cleaning brush?

Check #76 in the 5804 output check, the quenching lamp, and make sure that it's working and discharging the drum. Maybe you have a broken line or something is disconnected.

I'm thinking it's a few things:

Bad quenching lamp
bad/incompatible drum
bad drum ground-or going bad
bad developer assembly

[KopyKat]

We have a Ricoh 2090 that started having tone marks on the operators side of the machine. The first 10 copies out of the machine are fine but it starts toning on one side. We have installed a new transfer belt , a new drum blade, new developer, and it has a fairly new drum. When we pull the drum unit out it is covered in toner. We have to clean it often.
We also have lowered the toner supply rate.
I have attached a copy of what it looks like after about 50 copies.
Any ideas?

Aftermarket drum is a possibility. But....

I had one recently where we placed a 2090 from a whole seller as a rental machine. After I did the first PM a similar issue to yours happened. The machine would seriously overtone and the copies looked a lot like yours.

The solution was that the machine was not one of the 'enhanced' 2090s no red sticker on the drum stay and serial below the cut off mark. I had installed the B0709510 drum at the PM and the un-enhanced machines need the A2959510 drum. After installing the A295 drum the machine went back to being happy and perfect copies. The Enhancement was so long ago it drove us nuts for a few days. Check the firmware level and the serial cut-off. That's what clued me in. Attached info...

Hope this helps.

[Shadow1]

I had installed the B0709510 drum at the PM and the un-enhanced machines need the A2959510 drum. After installing the A295 drum the machine went back to being happy and perfect copies.

Strange - I didn't have an A295 drum, so I installed a B070 drum in a Lanier 5265 and it has been running perfectly for over 600K (developer, charge, and PCU have been pm'd since, but the drum is still going. I wonder if that probpem is unique to that machine because my old 1st generation digital works fine... although I do remember some of the transfer voltages being changed as part of the enhancement update.

[KopyKat]

Strange - I didn't have an A295 drum, so I installed a B070 drum in a Lanier 5265 and it has been running perfectly for over 600K (developer, charge, and PCU have been pm'd since, but the drum is still going. I wonder if that probpem is unique to that machine because my old 1st generation digital works fine... although I do remember some of the transfer voltages being changed as part of the enhancement update.

A crap load of SPs to change and well as parts in the Drum unit and firmware to boot. We decided to just use the A295 for cost reasons.

The problem is unique to that model. I use the B0709510 in B064s and B140s with no issues at all.

[st0ll3n_m1k3]

Captkirk, was that the "drum blade" or drum and blade? if you didn't replace the drum, I would replace it as a pair with the blade. That has become our policy at our company. I know it seems to be a waste, but when you replace the blade, without the drum, especially on over used blades, the blade wears the drum and then causes the new blade not to seal on the drum...

Also when you removed the drum, did you clean the charge.

is the toner building up on the transfer and then to the drum, because it could be the toner recycle unit(behind the transferbelt in the housing that the transfer belt attaches to) could be full... remove the belt, the 6 screws and empty(take care to clean the sensor in there too, as it will throw a toner recycle full msg if toner is on the sensor, I have seen them cause all sorts of problems because the sensor doesn't get toner on it all the time, and it overfills back into the machine, dumping all over, causing the developer to go bad, the drum the blade, the charge be dirty and the charge cleaning roller.

post back with results plz.

[imaginemoko]

am thinking perhaps the drum, charge unit. front block may burn-out already, transfer bias brush if its worn out...... and get into default the toner supply..

Good Luck Sir.

[Vulkor]

Looking forward to hearing what fixes this.

[ZeusGT]

Got one here doing the same thing.. funny you mentioned that about the drum though, I did a full blown PM and replaced the drum with the A295 model and still have the problems. These drums came out of the PM kit for this machine. I've replaced the drum twice thinking the same thing, but it did not fix it.

My next option was the developer unit. This machine has over 1.5 mil on the clock. It's about this time that I noticed they start to give you problems and it never stops from here $$$.

I'm pretty interested in seeing what fixes this too. Thanks

[Shadow1]

This machine has over 1.5 mil on the clock. It's about this time that I noticed they start to give you problems and it never stops from here $$$.

If you only get 1.5M before you start having problems something isn't right. I usually have about 7-10M on one of these before odd stuff starts wearing out, and then it's pretty predictable what goes first. (The plastic gears in the paper feed drive and transport)

I have seen some Developer units go bad after about 1.5-2.5M. The magnets get weak, the developer unit starts bearding, then starts leaving carrier onto the drum, which wears it out real fast. The problem looks sort of like what's happening here, but it is usually across the entire copy or rapidly gets that way.

Shotgun it if you have to, for the sake of the customer and your sanity: New drum, developer assembly, ID sensor, Drum Potential Sensor, and do an Engine Clear.

And a little Gremlin Repellent Spray wouldn't hurt either.

[imaginemoko]

Got one here doing the same thing.. funny you mentioned that about the drum though, I did a full blown PM and replaced the drum with the A295 model and still have the problems. These drums came out of the PM kit for this machine. I've replaced the drum twice thinking the same thing, but it did not fix it.

My next option was the developer unit. This machine has over 1.5 mil on the clock. It's about this time that I noticed they start to give you problems and it never stops from here $$$.

I'm pretty interested in seeing what fixes this too. Thanks

have you try the charge unit to replace... or the corona block's?

[ZeusGT]

If you only get 1.5M before you start having problems something isn't right. I usually have about 7-10M on one of these before odd stuff starts wearing out, and then it's pretty predictable what goes first. (The plastic gears in the paper feed drive and transport)

Really... I've got probably 5 or 6 of those out here and every single one of them never made it to one PM before they gave serious problems. These machines have never really been top producers and has ended up costing Ricoh more money then what they were making in repairs.

I have heard that they can go 11 million, but I've never seen it happen. The most that I've seen these machines go is about 8 million and the machine is soooooo wore out that they end up replacing the machine. I dunno.. maybe you got lucky on the ones that you got.

The general opinion on these machines per technicians are that they are slush boxes that are hardly reliable.. heaven forbid they are placed in a humid enviorment.. the toner drive system fails often with clogged tubes.

There comes a point where the customers begines to have a negative opinion about the machine because a tech is out there so much for things that machine should not have that many problems with early on. Remember, this is suppose to be a high volume production box. A 3035 shouldn't go longer in a pm cycle then a 90. That's what we experience here.

[ZeusGT]

have you try the charge unit to replace... or the corona block's?

Oh yeah, those are the first things we do around here.. like he said earlier.. they are somewhat predictable on what is going to fail. Sometimes though.. they just keep breaking over and over and it's not explainable. There is one machine.. no matter what we have done... we have to replace the DV unit every 600,000 copies just about on the dot to get good copy quality again.. this machine has been this way since it was new.. no explanation.. it's always done it.

[imaginemoko]

Oh yeah, those are the first things we do around here.. like he said earlier.. they are somewhat predictable on what is going to fail. Sometimes though.. they just keep breaking over and over and it's not explainable. There is one machine.. no matter what we have done... we have to replace the DV unit every 600,000 copies just about on the dot to get good copy quality again.. this machine has been this way since it was new.. no explanation.. it's always done it.

am sorry... but how about the Devlopment power pack that energize the dev unit....