Where it isn't a Xerox product I have no access to spar firmware for it, but it is probably SMBv1 causing it.
They have information here, and your model is listed as supporting SMBv2. (But it may need what is called a Spar firmware to actually make sure it works, and due to it being a FujiXerox vs a Xerox I have no access to them for it)
So with that in mind.
Port needs to be 445 and not 139
Time on the device needs to be correct to within 3 minutes.
Login name should be fiully qualified, easiest way to verify that is via (type it exactly as it appears in the brackets)
