20
20
CDX-F7700/F7705X
3-2. BLOCK DIAGRAM — CD SECTION —
PD1
PD2
E
F
I-V AMP
PD
LD
DETECTOR
(FOCUS)
(TRACKING)
2-AXIS DEVICE
OPTICAL
PICK-UP BLOCK
(KSS1000E)
• Siganal Path
: CD PLAY
LASER DIODE
M
M
M
M903
(LOADING)
M901
(SPINDLE)
M902
(SLED)
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE/LOADING
MOTOR DRIVE
IC1
CD-L
R-CH
AUDIO INTERFACE
IC8
+1.5V REG
IC7
SYSTEM CONTROL
IC303 (1/3)
SW2
(SELF)
SW1
(DOWN)
SW3
(DISC IN)
SW4
(LIMIT)
IC273 (1/3)
IC252 (1/3)
IC273 (2/3)
IC273 (3/3)
PD1
E
F
LD
PD
FCS+
FCS–
TRK+
TRK–
PD2
AUTOMATIC
POWER
CONTROL
Q1
+1.5V
CONTROL
Q2,3
+3.3V
CONTROL
Q5,6
• R-ch is omitted due to same as L-ch.
X1
16.9344MHz
X2
18.43MHz
LINK OFF
1
7
UNI SI
UNI SO
ATT
BU CHK
UNI SCK
BUS ON
SYS RST
C D+6V
CD+3.3V
+1.5V
+3.3V
BU+3.3V
6
2
IC252 (2/3)
Q267
2
3
(Page 21)
(Page 21)