A-100 Service Reference Manual
Service Manual for A-100 series organs, much of the information could be applicable to B-3's and C-3 organs. Essentially the A-100 has internal speakers and amplification. This is the major difference. A small administrative fee of $1.50 is asked to help us maintain this portion of the website and for scanning fees.
A great resource for those who own a Hammond A-100 or even a B-3 or C-3 Hammond Organ. They only difference between the models is that the A-100 has internal amplification and reverb. Check out the index in the jpg file to see what this PDF includes. A PDF scan of the original manual. Lots of great information about your organ.