F vs M cases and feet

elecplus · 08 Sep 2016, 16:52

All of my F 122s have a round circle in the end on the side, for the type of foot.
All M 122s are supposed to have smooth sides, and feet that fold out.
So what is an M 122 with F feet and a plastic back? 1390832 is the part number.

Chyros · 08 Sep 2016, 16:56

elecplus wrote: All of my F 122s have a round circle in the end on the side, for the type of foot.
All M 122s are supposed to have smooth sides, and feet that fold out.
So what is an M 122 with F feet and a plastic back? 1390832 is the part number.

I think that's a transition model, but it's well-known. The real way to differentiate the M122 from the F122 is just the back panel or "pan".

fohat · 08 Sep 2016, 19:10

It is easier to modify those first-gen M-122s to make replacement top case shells for F-122s, but it can be done with later ones, too.

https://geekhack.org/index.php?topic=45 ... #msg939658

lot_lizard · 10 Sep 2016, 09:07

On this same spur... What's inside this little jewel?

http://pages.ebay.com/link/?nav=item.vi ... ID=EBAY-US

I haven't seen any 138xxxx part numbers that are M's (at least that I remember). Here's another with the same part number that has an F style back label

http://pages.ebay.com/link/?nav=item.vi ... ID=EBAY-US

fohat · 10 Sep 2016, 17:06

lot_lizard wrote: On this same spur... What's inside this little jewel?

http://pages.ebay.com/link/?nav=item.vi ... ID=EBAY-US

I haven't seen any 138xxxx part numbers that are M's (at least that I remember). Here's another with the same part number that has an F style back label

http://pages.ebay.com/link/?nav=item.vi ... ID=EBAY-US

Very very early Model Ms had "bar code" labels.

I have never personally seen an F-122 whose model number did not begin with 611*

lot_lizard · 10 Sep 2016, 18:05

For sure there aren't many. These are from Cindy's haul for our MF project. There are some 139's, but those were the relabeled refurbs. I'm going to ask to see if they can pull a key and take a picture for giggles. Would be shocked if not an M, but it's certainly odd (at least to me).

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