5.3 Operation of Optical Disk Cartridge
(a) Shutter closed
(2) Shutter
(1) Cartridge case
(3) Write protect tab
(b) Shutter open
(4) Disk
(5) Hub
(a) Shutter closed
(2) Shutter
(1) Cartridge case
(3) Write protect tab
(b) Shutter open
(4) Disk
(5) Hub