Orijinal gönderinin sahibi: Chris

Metin:

The hammering sound is obviously because of slipping of gears or cause of some obstruction.

I experienced such thing once,  I inverted the printer in the air by holding down and shook it for a while as, I suspected some obstruction and I was right, luckily some board pins  fell off.  May work or not for you the gear assembly or the belt should be checked in your case.

Durum:

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