1-26 (No.49787B)
5.3 Flow of functional operation until TOC read (new circuit board)
Power ON
Set Function to CD
Play
Jump to the first track
TOC readout
Tracking loop closed
Disc rotates
• When correctly focused
Disc inserted
YES
YES
Laser emitted
Pickup feed to the inner area
Focus search
• When the disc correctly rotates
RF signal eye-pattern
opens
RF signal eye-pattern
remains closed
• When the pickup correctly moves
to the inner area of the disc
• When the laser diode correctly
emits
"No disc"
display
Rough Servo Mode
CLV Servo Mode
(ProgramArea)
CLV Servo Mode
(Lead-In Area;
Digital: 0)
• RF signal
Focus Servo Loop ON
TERMINAL
Tracking Servo Loop ON
Servo CLV
Rough
Servo
Acceleration
Acceleration
Spindle
motor (+)
IC581
DMO
TC94A14
1.6V
FEO
TA2157
15
15
41
18
FMO
TC94A14
CN503
FEED MOTOR
IC581
RESET SW
2.1V
1.6V
1.1V
6V
4V
2V
OFF
ON
SEL
TC94A14
LD
2V
0V
2V
0V
38
4
23
40
3.3V
1.6V
0V
6V
4V
2V
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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