Original well scanned manual. Got the job done. Microwave problem found & corrected. For $5 and a new magnitron from ebay, it was a cheap and good the first shot fix. Electrical schematics allowed me to mage sure every thing else was ok before cutting and order for parts. Hard to live without.
Text excerpt from page 7 (click to view)
3) Insert a flat screwdriver into the clearance marked by the arrow and rotate the gear in the direction of the right arrow to open the tray.
4) Lift up PANEL, CD in the direction of the arrow.
5) Remove the four screws and remove SHLD, STEEL.
6) Remove the four screws.
7) Attach the tray and put the mechanism in the workpiece in this state.