I searched the Internet exhaustively for this manual and Owner-Manuals was the least expensive...but provided an excellent reproduction within 4 hours. Very satisified.
This is exactly the thing you need to service this box. The manual is complete and the quality of the scan is good. I recommend this!
Text excerpt from page 44 (click to view)
Service hints Dismantling of Tray
10-3
10-4
Service Position
1. Open the tray. 2. Release 2x catch as shown in fig. 2 and Detail A 3. Pull tray out.
Detail A
fig.2
Assembling of Tray
1. Turn Cam (pos. 48) clockwise to end position. 2. If necessary - move Guiding (pos. 49) to the right end position. 3. Insert the Tray.