JVC KD-SX985 Service Manual page 20

KD-SX985
QQ
3 7 63 1515 0
Flow of functional operation unit TOC read
When the pickup correctly moves
to the inner area of the disc
$83
Microprocessor
commands
FMO
TC94A14FA" 40"
FEED MOTOR
+TERMINAL
IC561"4"
REST SW
When correctly focused
FEO
TA2157" 15"
Focus Servo Loop ON o
TE
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1-20
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$82 $81
3.3V
Hi-Z
0V
Pickup feed to the inner area
6V
4V
2V
OFF
ON
2.2V
RF signal eye-pattern n
remains closed
Tracking loop closed
RF signal eye-pattern
opens
Jump to the first track
x ao
y
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8
Power ON
Set Function CD
Disc inserted
YES
Laser emitted
"No disc"
Focus search
display
YES
Disc rotates
Q Q
3 6 7 1 3
TOC read out
Play
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.
2 9 9 4
When the laser diode correctly
emits
$84
Microprocessor
commands
SEL
TC94A14FA"38"
LD
CN501"15"
When the disc correctly rotates
Microprocessor
$84 $86 $ A200
commands
1 5 0 5 8 2 9
DMO
TC94A14FA"41"
Spindle
motor(-)
IC561"1"
Rough
Acceleration Servo CLV
Servo
0.5 Sec 0.5 Sec
Tracking Servo Loop ON
RF signal
Rough Servo Mode v
CLV Servo Mode
(Program Area)
m
co
CLV Servo Mode
(Lead-In Area;
Digital :0)
2 8
9 9
3.3V
0V
4V
0V
9 4 2 8 9 9
3.3V
2.2V
0V
6V
3.2
2V