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Question: The dark solids are light. I adjusted the exposures in default, but it did not help. It is not time for the pm, as it has 200,000 copies and I cleaned the charge wire. If you have normal print, you cannot tell as bad. It’s just the dark solids that are very light. Thanks for the help.

Answer: Clean the transfer roller using a soft dry cloth. Rub the roller with a folded portion of the cloth, but do not rub with your finger covered by the cloth.

Answer: Are you using generic toner? If not, you might want to empty out the developer unit and re-install fresh toner.

Answer: Sounds like generic toner or paper dust has built up in the DV unit. Good luck

Answer: If all those suggestions don’t work, try this as a last ditch effort. Pull the drum unit out. On top of it, towards the rear you will find a v-pod. I know, I know. Everybody is cringing now. Turn ever so slightly counterclockwise; it doesn’t take much. This should darken the copies. Now mind you, this is not a fix, just something that might help you get to the pm time. The only bad thing is you have to put it all back together every time you test it.

Answer: I would lean toward the DV unit itself. I’ve had a couple go bad and give light fill in on the solids.

Subject: Toshiba hard drive

Question: I have a Toshiba DP 8070 with an f10 hard drive error. Two questions: Will it run without the hard drive? Where is it? Thanks.

Answer: You need the drive for image storage during copying (Upper cover on left side of machine under the optics).

Answer: Use a typical 20 gig hard drive. Just format and you are on the way. Try to reformat the old one first.

Answer: Don’t forget that it is a “laptop” style hard drive (2.5”) not a pc hard drive (5.25”).

Question: Thanks, guys.

Subject: Ricoh AF 650 jam problem

Question: The 3rd 1500 sheet cassette well jams at the reg roller. I have replaced the pf clutch, the one way bearing, and the OEM feed rollers. The first and sec feed just fine and I have tried vert transport. Has any one seen this before? Thanks.

Answer: When you say one way bearing are you talking about the one on the vert transport? The gear on the front, under the plastic cover? What about the torque Limiter? Sounds like that may be the culprit... Good luck

Answer: The best thing to do is cheat the front door switches and go to output mode in five. Run the pf stations and try to hold the tires in the A section. If you get any slippage that would be that clutch. I replace them as a set for each feed station.

Question: The one way gear on feed unit itself. I also tried a different feed unit all together with new clutch. What is the life span of a limiter?

Answer: You could have a problem with paper feed timing or buckle. What jam code was shown on the smc report [sp 7504-1, 7504-13, 7504-68]; in other words, where does it show the jam/what sensor?

Subject: AR 207’S LASER UNIT

Question: What is involved in removing the laser unit from this machine?

Answer: This job is very difficult the first time that you attempt it. If you’re a VERY experienced tech, take your time and dive in. The first time may take about two hrs or so. The last one I did took me about 45 min, start to finish. Be sure to have a 12 in #2 Philips...

Answer: He’s correct; the two screws on the backside are very difficult to get to. You need at least a 12 incher to reach them. Do your self a favor and don’t be in a hurry. You have to remove a lot of items to get to it. This includes all the boards on the rear to get to the harness. Also, you have to remove the control panel on the front in order to slide out the inner plastic cover over the Laser.

Subject: Mita 4090 Duplex Jams

Question: I’m trying to fix a Mita 4090 that jams as the paper is going into the duplex unit. One copy will duplex just fine, but anymore than one will jam on the way into the duplex unit. The paper that jams ends up on top of the duplex unit and not in the duplex tray. Any help would be appreciated. Thanks

Answer: It’s been a long time but I think one of the guides in the duplex unit that slaps down as the paper comes into the duplex is not coming back up quick enough. It may be out of place or the solenoid is not releasing right. It’s probably the long black guide that sits to the left (if you’re in front of machine) of the duplex feed roller.

Question: I tried a whole different working duplex unit and it does the same thing.

Answer: Take a look at the sensor in the refeed unit. I seem to remember a similar problem that was finally solved after replacing the paper feed sensor in the refeed section as it exits the fuser.

Tips appearing in this section are reprinted courtesy of Smarka! The Copier Tech’s Info Source. Tips are randomly selected from submissions emailed to Smarka! Smarka! and ENX Magazine make no guarantees as to the accuracy of tips presented here. Email your tips to Tips@smarka.com. All tips become public domain.

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