It is pretty good. The schematics were covered all components, the manual also provide the parts list . It's useful for the trouble shooting.
Text excerpt from page 18 (click to view)
HOW TO EJECT MANUALLY
1. Remove the Top Case, Front Assembly and Top Bracket. 2. Remove four Screws (S-3) in Fig. D3. Do not disconnect connectors. 3. While lifting up the DVD Mecha, rotate the roulette in the direction of the arrow as shown below. 4. Pull the tray slowly with a hand.
View for A
Rotate this roulette in the direction of the arrow