JVC CH-X1500RF Service Manual page 25

3.3 Flow of functional operation until TOC read
When the pickup correctly moves
to the inner area of the disc
Microprocessor
$ 83 $ 82 $81
commands
FMO
TC9462
53
FEED MOTOR
TERMINAL
IC581
20
RESET SW
• When correctly focused
FSO
14
Focus Servo Loop ON
Power ON
Set Function to CD
Disc inserted
5V
Hi-Z
0V
Pickup feed to the inner area
6V
4V
2V
Laser emitted
OFF
ON
Focus search
2.2V
Disc rotates
Tracking loop closed
TOC readout
Jump to the first track
Play
YES
"No disc"
display
YES
When the disc correctly rotates
Microprocessor
RF signal eye-pattern
commands
remains closed
DMO
TC9462
RF signal eye-pattern
Spindle
opens
motor (+)
IC581
RF signal
CH-X1500RF
When the laser diode correctly
emits
Microprocessor
$ 84
commands
SEL
TC9462
57
LD
CN502
5
or
CN503
22
$ A200
$ 8A $ 86
5V
2.2V
55
0V
6V
3.2V
1 2V
Rough
Acceleration Acceleration
Servo
Servo CLV
0.2Sec 0.5Sec
Tracking Servo Loop ON
Rough Servo Mode
CLV Servo Mode
(Program Area)
CLV Servo Mode
(Lead-In Area;
Digital: 0)
(No.49804)1-25
5V
0V
4V
0V