Panasonic PV-L452 Service Manual page 17

It normally takes approx. 6 seconds to unload the Mechanism from fully-loaded position to
EJECT position.
4.1.5.2. (Manual Method) without Cabinet Parts
Turn the Gear of Reduction Gear Unit clockwise (for loading) or counterclockwise (for unloading)
manually.
It is necessary to rotate approx. 80 times from fully-loaded position to EJECT position.
4.1.6. HOW TO REMOVE A JAMMED TAPE
CAUTION:
If loading does not start after DC Power Supply is applied, DO NOT
Fig. 4-1
Fig. 4-2
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