Please consider my humble request to provide me a pdf file, if there's any, for the Pioneer A-120D service manual. I bought this powerful unit sometime in 1984 and works fine over the years. Just few months ago, it suddenly turned off and its fuses blown up. A competent technician serviced the unit and could not repair for some resistors were burned in the amplifier circuit, hence color codes are not readable.
thank you very much and regards,