Ok, I answered my own question finally.  It appears there’s an error, or at least an ambiguity, between the front panel layout document and the text version of the manual I have.  To set a memory it says to have the frequency, mode, etc selected, and then press m.in and then select the target memory, and then press m.in again to write it.  However, the button you press to select the memory and then write it is what the front panel document calls the m right-arrow button.  The m.in button is for the quick memories.

From: Jim Shaffer 
Sent: Saturday, May 24, 2014 11:27 AM
To: For blind ham radio operators 
Subject: setting a memory on the TS-2000

Well, I got this borrowed 2000, and am starting to play with it.  However, using the manual I am unable to set a memory.

For example, I have VFO A set to 14.028 and am in CW mode.  Then I press m.in, the right button of the two above that oval satelite mode button.  I get a beep, but if I then turn the multichannel select button to select an empty memory, it just goes up to the nearest 5 khz, 14.030 in this case.  It’s as if I hadn’t pressed m.in.  Any ideas?
--
Jim Shaffer, KE5AL
Pflugerville, TX
www.jjshaffer.net
www.pgramblers.com