Service manual

– 21 –
CD-C449W/K449W
Figure 21 BLOCK DIAGRAM (3/3)
0
2
C
2
ME
VR601
MIC2
VOLUME
VR603
DIGITAL ECHO
VOLUME
IC601
M65845FP
MIC AMP.
L
R
AMP
H/P SW
POSISTOR
82 24
POSISTOR
5
DS RES
10
S-MUTE
64
63
62
1
43
5
21
26
7573715150474533
27
14
907246188915
8
6
7
9
797527 5049474562656364
61
818768
58 23 19
70
15
1
2
14
10
3
9
7
6
7
1
3
5
31
25232434
17
26
5521
10 25
26
19 18
27
33
34
29
28
24
25
10
11
28
27
26
4
8
1
97
96
95
29
3
2
1
CL
DI
DO
72
71
69
RES
CQCK
COIN
SQ OUT
WRQ
RWC
CD SL+
CD-PUIN
CD-DRF
+B4 (5V BACK UP)
+B3
VDD
+5V
UNSWITCH
+B2
MEMORY
VSS
+B4
RESET
OSC
4.19MHz
XF0201
SYSTEM STOP
P.FAIL DET
+B3
RESET IN
CD SL-
4
TO CD UNIT
QG01
QG02
QG03
ZDF01
STB SCK DAT
CD U/D
CD O/C
CD DNO
99
5
3
11
100
2
1
14
13
18
56
90
15
57
89
12
16
17
27
93
91
92
7
8
9
~
RELAY
H/P SW
FAN CONT
PROT
F992
T1.6A L 250V
SW991
VOLTAGE
SELECTOR
VOLTAGE
REGULATER
VOLTAGE
REGULATER
SWD01~SWD03
SWD07~SWD18
SWD21~SWD22
SWD30~SWD43
SWD48
SWD50~SWD54
SWD49(CD-K449W ONLY)
+B6
LEDD01~LEDD21
LEDD23~LEDD28
F1
F2
RXD01
REMOTE
CONTROL
SENSOR
~
~
DATA1
JOG DIAL
SWD02
JOG DIAL
SWD01
DATA
FAN
PROT
S-MUTE
POWER
AMP
FAN CONT
FRNT RLY
TMV01
SPEAKER
TERMINALS
F991
T1.6A L 250V
F990
T3.15A L 250V
230~240V
AC POWER
SUPPLY CORD
AC 110/127/220
230–240V
50/60HZ
VOLTAGE
REGULATOR
D992~D995
Q951
F997
T2A L 250V
F999
T5mA L 250V
T991
D991
+B1
VP VF2
(AC)
VF1
(AC)
T.F
POWER
TRANSFORMER
QV16
QV17
+4.6V
ICP11
NJM4565M
BUFFER AMP.
QS17
QS18
QS16
QS14
Q631
SRS A/SRS B
SRS IN H
PASS/SRS STEREO/SRS MONO
SRS PASS/3D
L
R
ICS01
SRS5250AS
SRS
MIC_DET
CD MUTE
VOICE CAN
CE CL DI
CE
SRS IN H
SRS PASS
SRS B SRS A
COM
+B6
Q902
Q901
TO CD UNIT
Q908
Q908
Q904
Q906
Q905
Q903
Q914
+7.3V(CD)
+B9
VOLTAGE
REGULATOR
–B6
–15V
+B7
+B6
+B2
UN-SWITCHED
+12V(MOTOR)
+12V(ANALOG)
VOLTAGE
REGULATOR
SWITCHING
VOLTAGE
REGULATOR
ICF01
IX0235AW
SYSTEM CONTROL
MICROCOMPUTER
TUNER MUTE
TUNER SD
SCK STB
Q907
QP11
QP12
POWER
POWER ON/STB
SWITCHING
OUT
IN
L
R
L
R
L
R
ICV01
STK40709
POWER AMP.
–B6
+B7
R-IN
L-IN
VH+
VH-
R-OUT
L-OUT
–B1
STB
SCK1
COM1
FAN
MOTOR
QV20
QN21
FAN
RLYV11
RELAY
QV22
QV19QV18
QV13
QV14
M
R-CH
GND
GND
L-CH
+
–
–
+
J901
HEADPHONES
FD01 FL DISPLAY
ICD01
IX0243AW
FL DRIVER &
CONTROLLER
~~~
~
KEY INVDD
+B2
VSS
KEY MATRIX
VF2 (AC)
VF1 (AC)
OUT
OUT
ICU01
LC75396N
UDIO PROCESSOR
Vss
VDD
VOLUME
RVref
GRAPHIC EQUALIZER
+B7
+B7
B
6
VOLTAGE
REGULATOR
VCC
GND
IN
OUT
IN
AUD SW
CD-K449W
ONLY
S
W
MIC1
V
OL IN
MIC2
VOL IN
ECHO
VOL IN
LR
LR LR
3
6
9
2
5
8
63
4
7
12
47
44
41
38
11
46
43
40
37
10
45
42
39
48
12
SWITCHING
SWITCHING
SWITCHING
FAN MOTOR
CONTROL
RELAY DRIVER
PROTECTION
PROTECTION
T1 CrO
2
T1 RUN
T2 RUN
T2 A FP
T2 B FP
2
T2 CrO
CAM-SW
TAPE SOL
TA MOT
HIGH SP
FR SP
BIAS
BEAT–CUT
TA–PB–EQ
TA R/P
REC MUT
T1/T2
PB MUTE
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
220V
127V
110V