Sony HDV HVR-1500 Service Manual page 20

(2) Cassette compartment
2 PH3
1 The sensors S1, S2 and S3 discriminate the inserted cassette type among the mini, M, standard
cassettes and the cassette adaptor for DVCPRO by on/off of the sensors.
2 The sensors PH1, PH2 and PH3 detect the movement of a cassette compartment by their combina-
tion.
3 The sensors PH4 and PH5 detect that a mini cassette got inserted.
The sensors PH4 and PH6 detect that a M cassette got inserted.
The sensors PH4 and PH7 detect that a standard cassette got inserted.
2-6
1 S3
2 PH1
2 PH2
3 PH4
1 S1
1 S2
3 PH5
3 PH7
3 PH6
HVR-1500