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Matsuura MC500V error 331

Benji_

New member
Joined
Aug 30, 2025
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4
I powered up my Matsuura MC500V and got Error 331 for the X-axis fuse. I've checked and tested every fuse I can find. The machine worked fine last time it ran and hasn't been moved. Am I missing something?
 
I had a similar issue with my MC500V after a long idle stretch. It turns out the X-axis servo amp had a loose connector that wasn't obvious at first glance. Have you checked behind the fuse block for any hidden inline fuses or signs of heat damage near the amp? Also, how long was the machine powered down? Sometimes moisture or dust can sneak in and cause weird behavior.
 
I didn't think about hidden inline fuses or connectors behind the block. The machine sat powered down for about six months, so maybe dust or moisture is the culprit.
 
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