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Q Q
3 7 6 3 1 5 1 5 0
DVD START-UP PROGRAM FLOW CHART
1. Disc Identification
Start
Vref
compensation
Disc diameter identification
Kick
Spindle
not yet
one rev
done
Rising Time
data:Tm
Th : Time threshold
NO
Tm >Th1
Th1=246 ms
Th2=123 ms
YES
NO
Tm > Th2
YES
D = 12cm
data:Tm
D = 8cm
NoDisc
T E
L
1 3 9 4 2 2 9 6 5 1 3
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
w w w
.
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Disc Type identification
Th0 : Level threshold
NO
pk0 > Th0
YES
NO
pk0 > pk1
NO
pk2 > pk1/3
YES
YES
D-type = DVD
D-type = CD
D-type = DVD Dual
DVD Mode
CD Mode
SGC(Layer1)
SGC
data:pk1&pk2
NO
pk2 > Th0
D-type = DVD Single
D-type = DVD Dual
DVD Mode
SGC(Layer0)
Fofst Adj
1
x
a o
u 1 6 3
y
i
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8
2. Fundamental and additional auto adjustment
D-type :
Disc Type
Q
Q
3
7
6
3
1
YES
c o
.
2
4
9
9
8
5
1
5
0
8
9
2
4
9
m
DVR-S60/NX-SW60
2
9
9
8
2
9
9
35
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