[HAM] troubleshooting the vibrato scanner

[Hugh]

My A100 had this problem due to the scanner being too seized to spin 
after sitting several years unused. If you take the scanner rear 
cover off by removing the two cover screws, part "F" in this diagram: 
http://www.dairiki.org/hammond/vibrato_tsb/diag1.gif (the back one is 
a PITA on an A100 and a mirror back there helped with bright lighting 
to put it back in), and gently give the scanner's rotor a nudge back 
and forth, it should free it up.

You can just barely get your pinky in there and touch the rotor to 
move it. Just be gentle around the brush assembly in the center of 
the scanner. You want to get in beside it on either or both sides. 
The scanner must have some kind of clutch drive that prevents it from 
seizing the whole TG if it seizes, kind of like each tonewheel pair. 
You can turn the TG by hand when you think it's freed up to test that 
the scanner's rotating. That's how I cured mine.

Hugh

>My service manual photo matches the Organ; it doesn't have the drum
>scanner below the motor like some do, it appears to be on the far end
>of the tone generator.
>
>I was hoping it was something as simple as a belt.
>
>thanks, Phil