SOURCE: Have a BIZHUB 550 with a C-3724 error on it.
Fusing abnormally high temperature detection
The fuser section reached a temperature outside of safe operation. You can reset the error by: Turning the main switch off, leave the operation panel switch on, hold down the utility/counter key and turn the main switch on. As the screen loads you will see a black dot in the top right corner, at this point you can release the utility/counter key. The machine will take a minute to load. When the screen loads you will have a key that says "Trouble Reset" press it and you will get a "OK" message. Turn the main power off for 10 seconds and turn back on. If message returns you must replace the fuser. Attempt Trouble reset again at your own risk!! Fusers are a Fire Hazard
SOURCE: changing fuses
Sir/Mam, I believe your talking about the Fusing Unit? Not a Fuse. The fusing units several hundred dollars. When needed to be replaced shies on the operation screen would recommended a technician you have to follow certain steps of course.
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f
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