Altec Lansing 1590 A svc docs

[MonarkeIV]

I have two of these beasts which were originally installed in a late 1960s Schulmerich carillon. I have the factory provided blue line schematic for these 1590A amplifiers though there is no information as to biasing etc.

I have been able to locate a reprint for the 1590B and before I purchase I wanted to know if this will suffice (with the exception of the B model revisions).

Thanks