I'm happy to get a manual from this rare old amp. The pdf is from good qualty.
Text excerpt from page 4 (click to view)
2. SERVICE PROCEDURE
Emergency Eject 1. 2. To open the stucked tray, insert a pin into the eject pinhole and push the eject lever. Use a pin �4mm or less.
This picture shows the unit upside down. The eject lever is pointed by the arrow. The lever is thin so aim the narrow area carefully.