Flow Of Functional Operation Until Toc Read - JVC KD-SX992R Service Manual

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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
IC501 "10"
REST SW
• When correctly focused
FEO
Focus Servo Loop ON
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Pickup feed to the inner area
RF signal eye-pattern
remains closed
Tracking loop closed
RF signal eye-pattern
opens
Jump to the first track
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2 9
8
Power ON
Set Function to CD
Disc inserted
YES
Laser emitted
"No disc"
Focus search
YES
Disc rotates
Q Q
3 6 7 1 3
TOC readout
Play
.
KD-SX992R/KD-SX921R
9 4 2 8
• When the laser diode correctly
emits
Microprocessor
commands
1
display
• When the disc correctly rotates
Microprocessor
1 5 0 5 8 2 9 9 4
commands
Spindle
motor (-)
IC501 "9"
Rough
Acceleration Acceleration
Servo
Servo CLV
0.5 Sec 0.5 Sec
Tracking Servo Loop ON
• RF signal
Rough Servo Mode
CLV Servo Mode
(ProgramArea)
m
co
CLV Servo Mode
(Lead-In Area;
Digital: 0)
9 9
2 8 9 9
1-21