Subject: Strange Toshiba DP8130 problem
Question: The customer was having trouble with blurring when they printed through doc or off glass, but internals were perfect. I changed the CDD/lens unit and this fixed the issue. When I ran copies after the repair, I noticed only the first sheet of the image was cut off around 5” on the lead to trail and every copy after was perfect. There was a lot of dust build up on the lower aligning roller, so I cleaned both brushes and then the first copy was good. I have been on vacation this week and just talked to the covering tech—they are getting the cut off problem on the first page again. The covering tech said he called tech support who told him to order a board, which we’d get next week. What do you guys think? I’m not so sure we’re looking at a board problem.
Answer: I don’t believe it would be a board issue either. There was a bulletin a long time ago about there being voids on some pages because of a poor design on the aligning roller. Could this be the problem? I don’t know, but I will dig up the bulletin and email it to you. I just sent that bulletin to you, but after reading it I don’t think that’s your problem either. I still think it is a paper feed issue though, but I’m just not sure exactly what.
Question: Thanks. I too have a hard time believing it’s a board issue. I did get it to work after just cleaning the brushes and roller and now it’s back. I would think I need to replace the aligning roller and what drives it. I will have to look at the parts page since I can’t remember if the aligning roller is direct drive or clutch. I would think that it’s clutch. I did mention this to the other tech and he said, “If it was the clutch it would do it on all the copies,” but I don’t believe that either. Thanks for the bulletin, I did get it.
Answer: The clutch on the reg roller has an Allen set screw if I remember correctly that gets loose. First copy is off, then the screw starts grabbing and the rest is good.
Question: I think you are correct. I did get it to work cleaning everything so that tells me it’s in the aligning roller area. Sounds about right. I will check this out for sure. Thanks.
Subject: Toshiba ES-452 A fold in the paper
Question: Hi. This copier is weird. Sometimes it works perfectly, but other times it makes a fold in the middle of the paper. The paper is from the LCC, and it makes a little fold 2 inches from the bottom of the paper, and that folded part in the paper misses the image. This folding happens before the registration roller. Please advise me on any ideas. Thanks in advance.
Answer: Does it do it from other cassettes or just the LCC? Usually a Z-fold comes from the aligning roller not turning or turning on late. If only in LCC, I would start there with LCC aligning roller. Good luck.
Question: No. The other 2 cassettes are working fine. Thanks for the input.
Answer: I think it is just incidental that the symptoms only occur in the LCC drawer. You need to troubleshoot for Z-folding in general. Check the actuator for wear, clean behind the actuator holder and the sensor, and replace the clutch. By the way, if you are sure it happens prior to the AR then focus the same troubleshooting on the transport roller.
Question: Hi. Many thanks for the great information. The problem ended with me replacing 6LA66937000, 6LA66940000, AND 6LA66938000. Thanks again.
Subject: Kyocera KM-3060 Almost blank copy
Question: Hi folks. I have this machine I brought in to recondition. I’m getting just a small portion of the image I’m copying. I tried everything including maintenance kit. I’m thinking it looks like maybe it’s a drum ground—I see in the rear inside frame the contacts. I’m guessing these are the contacts for primary charge, but where would I be able to check for the drum ground, assuming there is a ground? When I do a status page, it is also blank, with just a small amount of print on the page. I stopped the copier in the middle of a copy, and don’t see any image on the drum. I checked the transfer roller which seems ok. Any help is greatly appreciated! Thanks.
Answer: It could be dirty optics or laser unit is my guess.
Answer: Check DV bias connector (behind dev unit). Also try the high voltage PWB in back supplies charge, bias and transfer.
Question: The DV bias is missing.
Answer: If the DV bias is not the culprit maybe check the contacts on the paper conveying section 2 for the transfer roller (terminal plate transfer and terminal plate station) and also the contacts where these meet in the copier (base terminal main or base terminal transfer) I believe they are easily deformed.
Question: Can I check DV voltage off the developer roller during “copy”? If so, what can I expect to read? Back in the days I could do
this with Canon analogs, and read -180v.
Answer: Check to make sure the transfer roller is intact and that the springs are in place on both sides.
Answer: The developer contact in the back of the machine was making poor contact—I wedged a piece of paper behind the connector as a fix to hold it while the dev unit is pushed against the connection. It’s just a temporary fix but I will let you know if it is the cause.
