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That doesn't look like the Front Panel in the parts manual.

That is the control panel for the FDX model which you have.  

Yes. If it were set for two cup sizes would those large and small cup figures light up? 

This is the control panel of the machine on the second floor. It's a AP 213. It has no way to select large /small drinks.

I'm pretty sure the logic boards have both been replaced in these machines. Is it possible that the control panels have been, also?

If you're certain that the 2nd floor machine is actually a 213 then it's just the start label that has been replaced.  If you were to pull the start label out you'd find both start buttons there.  This is the label used when only one cup size is vended from the machine.

Second floor machine.

First floor machine.

So your second floor machine is a very early FDX and the first floor machine was produced later.  They both have the same features, parts and software.  The eprom in the logic board is what determines the machine format.

1 hour ago, AZVendor said:

 The eprom in the logic board is what determines the machine format.

Ah, yes. The EPROM.

From the manual;

"The software revision for Model 213 will be known as "Version C" and can be identified by a lilac (light purple) label on the EPROM on the logic board."

Nope. No purple label on the EPROM on either logic board. That is why I think the logic boards have been replaced. I have images if you wish.

I might be over thinking this, but I attempted to change prices on the machine and it didn't take. Tomorrow I am going to attempt to change the recipe for coffee because there is nothing to lose.

Make sure that the board you're looking at is the one behind the selection panel.  Is there a C in the label that's on the eprom?  If so then the color of the label doesn't matter.  If there is no C then tell me what the eprom version is and I'll see if it's still correct for your machine.

The logic boards on both machines look exactly the same. Accessed behind the cup cabinet.

I shake too much, so only one image is clear. The bottom line on the eprom  is 'C* 01/29/96'

The top line is 'V5CZL8Y4' The middle line is written '2319'

I can't post any more than 0,01MB files, but there is a label posted above the logic board on the first floor machine (the one I have running) that seems to go with the board. It has a box with these three lines.

"This machine contains version "C" or higher software."

"Replacement  L.C. Board. Part No. 33910-VC"

"Do not use board with 203 Single or Dual Cup Program EPROM"

Does the machine show start and duration times that have been set for each channel?

The machine is programmed by start and duration for each recipe, among other things.  The second start button is behind the label to the left of the green dot.