Location Of Sensors And Their Functions - Sony PDW-U4 Service Manual

1-6. Location of Sensors and Their Functions

Location No. Part Name
1 OP position sensor (0 side)
2 OP position sensor (1 side)
3 REC INH sensor
4 Cartridge DOWN sensor
5 Cartridge IN sensor
6 Cartridge type sensor
7 Angular speed sensor
(6)
(7)
(4)
(3)
(2)
Function
Detects position of the optical block assembly.
Detects position of the optical block assembly.
Detects status of the recording prohibition tab of the cartridge.
Detects down position of the cartridge.
Detects insertion of the cartridge.
Detects type of the inserted cartridge (single-layer disc to
quad-layer disc).
Detects angular speed applied to the optical block.
(5)
(1)
10