Service manual

– 19 –
CD-C449W/K449W
Figure 19 BLOCK DIAGRAM (1/3)
8
27
1
2
3
4
5
98
6
7
20
12
13
24 25 30
31
3222
34
35 36
10 11
27 26 28 29
PU-IN SW
XL1
XIN
LD0
FIN2
JP–
CV+
SLC
SL1
FIN1 E F
TO
FD
SPO
NC
SLD
SL–
SL+
DRF
CL
DAT
CE
VCC1
6
+5V
PICKUP IN
SW4
FOCUS COIL
TRACKING COIL
M1
DISC
MOTOR
M
M
M2
SLIDE
MOTOR
PICKUP UNIT
9
IC2
LC78622K
SERVO/SIGNAL
CONTROL
+B1
IC3
M56748FP
DRIVER
IC1
LA9241M
SERVO AMP.
6
1
9
5
+B1
+12V(+B5)
RES. CQCK. COIN SQOUT. RWC. WRQ
~
~
~
CL, DAT, SELIAL CONTROL/CE
Q93
Q91
Q91
SL+. SL–. DRF
7
3
9
8
7
6
5
4
3
2
1
GND (D) MECHA UP GND (D) DISK NO. OPEN/CLOSE GND (D) M– M+ GND (M)
9
8
7
6
5
4
3
2
1
CNP10
M
+5V
+B1
62
64 45 3623 43
31
40 37
24 25
10 10
265853
10 12 20
32 40 43 44
5352515431302923271615
4144
Q1 Q52
+4.3V
Q81 +7.3V (+B9)
REGULATOR
TO MAIN SECTION
IC81
TA7291S
LORDING MOTOR
DRIVER
XOUT
EFMO EFMIN CLV+ JP–
CONT2 CONT1
CONT4
DOUT
LCHO
RCHO
VVDD
VDD
LVDD
RVDD
XVDD
SW1 OPEN/CLOSE
SW2 MECHA UP SW3 DISC No.
M3 LOADING
SOLM1
TO MAIN SECTION
CNS10