Thanks you very much for this "hard to find" service manual.
Will help a lot in repairing this receiver.
Text excerpt from page 2 (click to view)
PARTS LIST
NOTES:
Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. The ! mark found on some component parts indicates the important of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation.