RE: [CAD_CAM_EDM_DRO] Fanuc 3m help

I have repaired old machines for a few years now and have found if it is
more
the 3 or 4 years old and already has some bad electronics it is best to
replace them
with something newer. Things will keep going out and parts are hard or
impossible
to find. It takes less work in the long run to update to a regular PC
driven control.
There are many good version of PC software to run on it too.

Just curious how much did you give for it? It typically takes more than
twice the price
of the iron to get old electronics back up.

Mark


-----Original Message-----
From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Jon Elson
Sent: Tuesday, May 22, 2007 8:56 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] Fanuc 3m help



rocketscientistnate wrote:

> I just bought a Yuasa CNC mill off of ebay, and I need a little help
> getting it going. It is a 1981 model and has a Fanuc 3M control. I
> keep getting an error that means the Z encoder cable is disconnected,
> and following the troubleshooting guide in the manual (swapping cables

> and such) I've concluded the mainboard is bad. Does anybody know where

> I can get this repaired at a reasonable price (less than $1000)? Fanuc

> says it has a flat rate for repair on this board, I'm not sure how

they

> do that, but was $2260. WOW! Anyway, I'd really like to get this thing

> going.

Do you have the full service manuals for it? Either way, you
might check what the encoder inputs connect to, and see if there
are some standard line receiver chips there. It is possible
that a fuse has blown, or one of the receiver chips has gone bad.

Jon






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