Panasonic CRS1 Service Manual page 43

Step 9: Remove the OC gear assy followed by the OC
gear spring as arrow shown.
Caution: Ensure the OC gear assy and OC gear spring
are handle properly and keep them in a safe place.
Step 10: Insert the service key into the hole.
Step 11: Turn the service key to release the tray lock lever.
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CRS1