My unit has always exhibited mysterious behaviors as have a few other people's units who have had similar problems.
If I had to take a wild guess, perhaps the TORFR7 has something to do with the frequency range switching. One of the block diagrams shows some FR5, FR6, FR7, etc control lines in that area. Does the unit operate at all frequency ranges? Again, just a wild guess.
My 1288 threw an auto-cal error when I first got it. Then, after I ran through the manual calibration, it threw a different auto-cal error. Then I ran the auto-cal a few more times and it finally passed. Many months later, I turned it on and threw yet a different auto-cal error.
So, all I've been able to do is remove the battery, wait until the RAM contents evaporate, go through the manual calibration, and then run auto-cal (several times). Doesn't make any sense, but like your 1288, I never noticed anything wrong with the unit and it seemed to pass the specs.
Post an answer if you ever get to the bottom of this!