Dvd Start-Up Program Flow Chart - Yamaha DVR-S60 Service Manual

DVD START-UP PROGRAM FLOW CHART

1. Disc Identification
Start
Vref
compensation
Disc diameter identification
Kick
Spindle
not yet
one rev
done
data:Tm Rising Time
Th : Time threshold
NO
Tm >Th1
Th1=246 ms
Th2=123 ms
YES NO
Tm > Th2
YES
D = 12cm data:Tm D = 8cm NoDisc
Spindle Servo
Start
Gain down
FG servo
500 rpm
CD Mode
Fofst Adj
pk0 : S-Peak value
Fcs Aji
data:pk0
DVD Mode
Fofst Adj
pk1 & pk2 : 1st & 2nd S-Peak value
Fcs Adj
data:pk1 & pk2
Disc Type identification
Th0 : Level threshold
NO
pk0 > Th0
YES
NO
pk0 > pk1
NO
pk2 > pk1/3
YES
YES
D-type :
Disc Type
D-type = DVD
D-type = CD
D-type = DVD Dual
DVD Mode
CD Mode
SGC(Layer1)
SGC
data:pk1&pk2
NO
pk2 > Th0
YES
D-type = DVD Single
D-type = DVD Dual
DVD Mode
SGC(Layer0)
Fofst Adj
1
2. Fundamental and additional auto adjustment
DVR-S60/NX-SW60
35