September 2010 Subject: Ricoh Aficio 1060 Question: I’m working on a Ricoh Aficio 1060. Got an overheat error code. Can find nothing wrong with fuser components. I suspect this condition occurs when coming out of preheat as there is no visible damage in the fuser other than the blown thermostats. Have reset thermostats. Has anyone ever had this happen before? Answer: There is probably a buildup of toner under the thermistor or it’s going bad. The warm-up window is pretty short so when there’s a build up or the thermistor is not contacting the Hot Roller solidly it takes too long to come to temp and throws the code. Good luck! Answer: I would go ahead and replace the thermistors and thermostats regardless. The thermistors can get flaky after a while even it they are clean, and the thermostats tend to blow more easily after they have opened once. Other than that, if it still codes, I would check for lamp wires shorting to the fuser frame in the rear of the fuser, or against the rear of the machine when the fuser is pushed in. Question: Thanks for the tips. I think if it blows like this again I will replace the thermistor and thermostat. I will also check for the shorts. Thanks very much! Answer: The thermostats were opening without cause and have been changed to a new manufacturer. The newer ones have a black sealer on the rivets on the back. Subject: Bizhub c350 c0960 error code Question: I have this code on one machine and I can’t solve it. I changed the entire bypass (it’s a bypass lift code) and the code still remains. I changed the pwb-z, which is the trays board. If I take off the connectors from the bypass the rest of the trays work, so it’s not one of the tray engines. Has somebody had this problem? Thanks. Answer: According to the manual the next thing to replace is the Tray 2 vertical transport motor M103. Question: Like I said all trays are functional except manual tray. I feel like a fuse or something electronic is damaged. Thanks. Answer: There is no fuse that causes this on this model. It has very few fuses to begin with. Again, did you try the motor mentioned above? I have seen a lot of times when a tech is told what to try and they continue to try something else because they feel that is not it. When all else fails they finally try what they were told to replace to begin with and suddenly it works. I’m not saying this is the case. It has been rampant at our shop and it gets upsetting because the whole shop gets behind because they cannot fix the machine. Now, I do not know if the motor will fix the problem. I have never had this problem before without replacing the components that have already been replaced either as a whole assy or individual parts. According to the manual the only other part that was not tried is the motor. So until it is honestly tried, I’m sorry you cannot say this is not the problem. The reason is, and I have not looked just knowing how a Konica Minolta machine works, some motors operate in two directions. So feeding out of the tray might be fine, but reverse the direction and it may not work, which is how I believe the manual bypass gets its drive in order to rotate the clutch that in turn allows the lift tray to come up. So please try the motor. No offense meant. Question: OK, I will try to change the motor; anyway I don’t have any other ideas. Thanks, I’ll let you know. Question: There was a twisted axel in the machine and the bypass didn’t engage with the machine. Thanks. Answer: I have the same exact issue. Changing the entire bypass didn’t help. Also even though M103 works fine I changed that one too... Didn’t help. Could you please tell me where the twisted axel in the machine was and how you fixed it? Thanks. Answer: Glad you found the problem. Sorry if I sounded too bossy. Question: No problem. Like you said, M103 was the only alternative remaining according to the service manual, but I saw that M103 was moving initially and all gears from bypass had to move with the engine but they didn’t. So you can look where the bypass meets one gear inside the machine (not the one from the M103 axel but the bigger second one) and see if there is a contact. If not, you can easily straighten the axel from inside the machine with a plier. Good luck and thanks. It seems the machine gets a hit in the bypass! Subject: Konica Minolta 7222 Question: This machine is producing a humming sound whenever it prints. I have replaced the feed rollers in both trays with the same results. Any ideas? Answer: A humming, or a “farting” sound? Farting sound means usually the tires are worn slick, but I would assume a problem like that would be related to a clutch, or burdened motor. Use your “36” codes and take the paper out, run the individual motors, and engage clutches to see if it will isolate it for you. “25” maybe. Answer: Also check the double feed prevention assemblies, they are notorious for “farting.” How does the bypass sound? Answer: Especially when they are worn enough to stop turning, they will fart as they wear a groove into the sep roller. 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.