Sony SDX-D550V Mode D'emploi page 18

Cartridge Removal
18
Part 3. Operation
1
Press the EJECT button.
2
Open the dust cover.
The cartridge is ejected automatically.
Caution
Do not push the EJECT button while the TAPE MOTION indicator is
blinking. To do so may destroy data on the tape.
3
Remove the cartridge from the receptacle, and then close the dust cover.