In The Case Of Cd Disc; Disc Diameter Identification - Sanyo DVD-1500A Service Manual

DVD P.W.BOARD OPERATION(SIGNAL)
c. In the case of CD Disc
Zoom CD laser DVD laser
FE
FE
FDO
FDO
FE
FE
Peak 0 Peak 1
SPD
SPD
Peak 0 > Peak 1
B. Disc diameter identification
a. In the case of 12cm Disc b. In the case of 8cm Disc
Spindle kick
SPD
SPDO
Tm > 300ms
Tm > 155 ms
FG
FG
6 FG = 1 revolution
6 FG = 1 revolution
c. In the case of NO Disc
SPDO
Tm < 155 ms
FG
6 FG = 1 revolution
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