Flow Of Functional Operation Until Toc Read - JVC KD-S6250 Service Manual

KD-S6250/KD-S580

Flow of functional operation until TOC read

• When the pickup correctly moves
to the inner area of the disc
Microprocessor
commands
FMO
TC9462 "53"
FEED MOTOR
+TERMINAL
TERMINAL
IC581 "5"
REST SW
• When correctly focused
Focus Servo Loop ON
1-12
Power ON
Set Function to CD
Disc inserted
Pickup feed to the inner area
Laser emitted
Focus search
Disc rotates
RF signal eye-pattern
remains closed
Tracking loop closed
RF signal eye-pattern
opens
TOC readout
Jump to the first track
Play
• When the laser diode correctly
Microprocessor
commands
YES
"No disc"
display
YES
• When the disc correctly rotates
Microprocessor
commands
Spindle
motor (-)
IC581 "7"
Acceleration Acceleration
Tracking Servo Loop ON
• RF signal
emits
Rough
Servo Servo CLV
0.5 Sec 0.5 Sec
Rough Servo Mode
CLV Servo Mode
(ProgramArea)
CLV Servo Mode
(Lead-In Area;
Digital: 0)