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Re: have a cru fuse eror?
Your description is not clear. Replacing a fuse does not repairs the fuser. But if you replaced the whole fuser with a brand new one (not refurbished) then you have a bad power supply board. Unfortunately, you need to get a new copier.
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The CRU is a customer replaceable unit such as toner and drum. New ones have fuses that tell the machine that it's new. When they are installed for the first time, the fuse blows and resets the counter.
Rick and Felix are discussing the fuser, not the fuse error you are getting with the your printer. The error relates to a small fuse that is on the toner cartridge which goes into the printer. I am having a similar error message after getting a replacement from Cartridge World (although this is not the first Cartridge World replacement for this printer).
After much research, one suggestion was to remove the cartridge fuse and reinsert the toner cartridge. That worked for me and the CFU Fuse Error message disappeared for me, but I am trying to find out the PURPOSE of having a fuse on the toner cartridge itself. To protect the toner cartridge? Protect the printer? Other?