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Pioneer exclusieve M4a service manual

Dave0363's picture

Dear all,
looking for service manual for vintage amplifier Pioneer Exclusive M4a.
Purchased in Japan through YAHOO. Restored carefully because of malfunction. Unfortunately without Service manual. Sound really great! But becomes too hot after couple hours of work. Original fans destroyed and changed on new ones.
Appreciate assistance and understanding as well!
Thanks in advance!
David



Re: Pioneer exclusieve M4a service manual

I don't have the manual, but it sounds like the bias adjustments are wrong.

Dave0363's picture

Re: Pioneer exclusieve M4a service manual

Thanks a lot for the opinion and participation as well!
I shall ask to check it when sent to technician once again.
The problem is we doesn't have an idea what is correct adjustments.
So we are looking for Service manual.

with the BR, David