No need to say sorry for your opinion. That's what these forums are for. But dude, those type of fans, they will make noises but not "squeak". That is why I put in parentheses. I maintain maybe 75 - 100 of them and never heard a fan "squeak" in a 4 series. You will get noises from the fuser area mostly and 2nd most common is if it has a floor finisher FS-534 or 535 the transport bed bushings will "squeak" and annoying as hell. That's about the only noises I've heard in the 4 series since they been out 5-6 yrs.
I guess you can call this post bullshit as well if you like. Public forums all about opinions dude!
I wanted to add maybe a squeak or squeal is different in everyone's opinion, my definition would be like metal to metal, but the type of fans used in copiers now a days, i.e. brushless, etc don't have metal touching metal parts?
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