Error c4765 in my product Konica minolta c450

SOURCE: Konica Minolta C450 User Manual

http://kmbs.konicaminolta.us/content/products/models/bizhubC450.html?info=Manuals

SOURCE: Konica Minolta C450- error code c-2251

It's been a while since you posted that but you may just need to slide it back out and shake it back and forth (long ways) a few times. We had the same problem and the konica minolta tech told us to do that. It worked. DO NOT turn it upside down though.

SOURCE: proplem with KONICA MINOLTA bizhub C450

c-3451

SOURCE: KONICA Minolta c450 in Windows Vista

go to the printers and faxes page and in the driver properties click on printing preferences click on authentcation/account track and you should be able to enter you name and password from there unless you may have to be logged on as the administrator on your computer to make these changes

SOURCE: Problem with the Konica Minolta

This code is for LCT (Large Capacity Tray) lock release failure. This means there is a problem with the LCT, usually the large paper drawer at the bottom. This code is usually reset by opening then closing the front door. Sometimes turning off then on the main power switch on the right side will clear it. Try releasing the LCT and get it open. Then check the paper in the tray. Most of the time when there are problems with these LCT's it is because too much paper has been loaded or it has been loaded improperly. If you get it open, remove all paper. Then load smaller amounts of paper at a time to insure that it is loaded perfectly. Only load the tray half full at first and then close the drawer and allow it to lift. Then make a copy from that drawer to be sure it feeds paper. Then release the drawer again and finish loading if you want. If you continue to have the code then you can leave the drawer open an inch or so to de-activate it so you can still use the printer from the other drawers until you can get a technician out ot service it.
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