JVC KD-SH9101 Service Manual page 33

QQ
3 7 63 1515 0
3.4 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
IC681 "17"
REST SW
When correctly focused
FEO
TA2157 "15"
Focus Servo Loop ON
TE
L 13942296513
www
.
http://www.xiaoyu163.com
v
$82 $81
3.3V
Hi-Z
0V
Pickup feed to the inner area
6V
4V
2V
OFF
ON
2.2V
o
RF signal eye-pattern
remains closed
RF signal eye-pattern
opens
x ao u163
y
i
http://www.xiaoyu163.com
2 9
8
Power ON
Set Function CD
Disc inserted
YES
Laser emitted
Focus search
YES
Disc rotates
n
Q Q
3 6 7 1 3
Tracking loop closed
TOC read out
Jump to the first track
Play
.
9 4 2 8
When the laser diode correctly
emits
$84
Microprocessor
commands
SEL
TC94A14FA "38"
LD
CN601 "10"
"No disc"
display
When the disc correctly rotates
Microprocessor
$84 $86 $ A200
commands
1 5 0 5 8 2 9 9 4
DMO
TC94A14FA "41"
Spindle
motor(-)
IC681 "16"
Rough
Acceleration
Servo
0.5 Sec 0.5 Sec
Tracking Servo Loop ON
RF signal
Rough Servo Mode
CLV Servo Mode
(Program Area)
m
CLV Servo Mode
co
(Lead-In Area;
Digital :0)
9 9
3.3V
0V
4V
0V
2 8 9 9
3.3V
2.2V
0V
6V
3.2
2V
Servo CLV
v
(No.49841)1-33