The service manual when downloaded and printed out was clear and easy to read. The manual is complete with the schematic diagram and technical data. I occasionally require a manual and now having registered with this company I shall order from them in the future.
Text excerpt from page 13 (click to view)
You can prohibit the CD ejection and can lock a CD in the loading slot.
Press and hold CD and 0 for more than 2 seconds.
CD
�EJECT� flashes on the display for about 5 seconds, and the CD is locked and cannot be ejected. To cancel the prohibition and �unlock� the CD, press and hold CD and 0 again for more than 2 seconds. �EJECT� appears on the display, and the CD ejects from the loading slot.