This manual was very clear and complete, the prices can't be beat, great to have older manuals available!
Text excerpt from page 13 (click to view)
(S-4)
[5] DVD Mechanism
(S-4) (S-5)
[6] AV CBA
(S-4) (L-3) (S-6)
(L-3)
Fig. D5
Fig. D6
3. How to Eject Manually
1. Turn the unit over. 2. Insert the shaft less than a diameter of 3 mm (e.g. screwdriver) straightly into the opening as shown. 3. Turn the shaft along with the opening clockwise. 4. Repeat steps 2 and 3 until the tray will open. 5. Pull the tray slowly manually.