18
18
MDX-66XLP
4-2. BLOCK DIAGRAM
+9V
FOCUS
SLED/SPINDLE MOTOR DRIVE,
FOCUS/TRACKING COIL DRIVE
IC300
TRACKING
M902
(SLED)
M
M901
(SPINDLE)
M
LD
AUTOMATIC
POWER CONTROL
Q100
RF AMP
IC100
DETECTOR
D/A CONVERTER
IC500
ELEVATOR MOTOR DRIVE
IC700
M904
(ELEVATOR)
M
LOADING MOTOR DRIVE
IC701
M903
(LOADING)
M
F
C
B
J
A
D
E
I
PD
SWDT
SCLK
XLAT
PEAK HOLD
Q200
DIGITAL SIGNAL PROCESSOR,
DIGITAL SERVO SIGNAL PROCESSOR
IC200
XLAT
SCLK
SWDT
XRST
XINT
SRDT
SQSY
DOUT
R-CH
XRST
XLAT
SWDT
SCLK
XINT
SRDT
SQSY
DOUT
LEVEL SHIFT
IC602
S901
(HOME POSITION DET)
S400
(LIMIT)
BUS INTERFACE
IC900
SYS RST
BATT
B/U+5V
BUS CLK
BUS DATA
BUS ON
LINE AMP
IC930
MUTING
Q920
MUTING
Q910
6
4
7
3
1
2
5
CN900
CN902-1
CN902-2
L
R
R-CH
BATTERY DET
Q940, 941
AUDIO
OUT
+9V REG.
Q931
P/U+5V
DRV+5V
DRIVE
+5V REG.
Q972
+3V REG.
Q800, 801
+3.3V
LAMP DRIVE
Q600, 601
8
IC970
REGULATOR CONTROL
PL620
(ILLUMINATION)
X601
32.768kHz
X600
14MHz
S600
STOP
SYSTEM CONTROL
IC600
(BUS CONTROL OUT)
OPTICAL PICK-UP BLOCK
MUTING
SWITCH
Q500
MUTING
CONTROL
SWITCH
Q932
B+ SWITCH
Q930,970
B/U+5V
B/U+5V
B+ SWITCH
Q602
+6V REG.
Q950
RAM
IC201
X200
45MHz
MNT0
MNT1
MNT2
MNT3
SENS
MNT0
MNT1
MNT2
MNT3
SENS
LEVEL SHIFT
IC603
RV901
ELEVATOR HEIGHT
SENSOR
S611-616
DISC WITH/
WITHOUT DET
S902
LOADING END
SENSOR DET
S620
FRONT DOOR
OPEN DET
S903
STORE END
SENSOR DET
Signal Path
: PB
TH600
OSC
BUFFER
IC203