Service manual

CD-C449W/K449W
– 20 –
Figure 20 BLOCK DIAGRAM (2/3)
J602
MIC2
J602
MIC1
VR602
MIC2
VOLUME
VR601
MIC2
VOLUME
VR6
DIGITAL
VOL
U
IC601
M65845FP
MIC AMP.
L
R
H/N
T1/T2
ERASE
HEAD
R-CH
L-CH
PB HEAD
L-CH
R-CH
REC/PB
HEAD
P.B
AC BIAS
P.B
REC
REC/PB
TAPE 2
TAPE 1
T1/T2
SWITCHING SWITCHING
BAIS
L NF
L(T1)
R(T1)
L(T2)
R(T2)
R NF
L
R
POP REDUCE
L REC
R REC
PLAYBACK AND RECORD AMP
AN7345K
ICK01
L
R
REC
P.B.
REC
ALC
HIGH
NOR/
T1/T2
REF
+B7
P.B
REC/PB
MUTING
MUTING
PB MUTE
REC MUTE
HI SPEED
L NF
R NF
SWITCHING
SWITCHING
SWITCHING
M
MOTOR
MM1
+B2
TA MOT H/L
HI SPEED
TA MOT SW
DRIVER
DRIVER
MOTOR
BAIS
TAPE
L
R
JR11
JR12
VCR/AUX1
VCR/AUX2
QK21
QK22
QK26
QK24
QK28
LK04
QK07
QK08
QK11
QK10
QK09
QK03
QK04
QK05
QK06
QK19
QK15
QK16
DRIVER
QL17
QL12
QL13
QL11
QL18
QL14
QK17
QK18
14
15
19
10
17
8
18
7
12
13
14
16
9
6
4
3
23
2
24
1
5
21
4
20
ICH11(1/2)
CD MUTE
QL16
SOLENOID
DRIVER
SOLM1
SOLENOID
T1/T2 CrO 2
T1/T2 PLAY
T2 F-REC
T2 R-REC
QL15
QL19
F.A.S.
SWM5
SWM6
CAM SW
SWM3
REC FWD
SWM4
REC RVS
T1 CrO2
SWM1
SWM2
T2 CrO2
+B6
CAM SW
PHM1
T2_RUN
T2_A_FP
43
8
2
4
1
6
7
8
1712
2113
20
1011161522
1
321
231
4
17
985
16
15
6
1412101321222324
7
18
2
3414
21
10 2
5
19 18
31
2722
58
54
57
55
1
6
5
1
24
25
10
11
9
7
38
5
1
9
6
28
27
17
18
26
7
6
5
DO
7
DO
CE
CL
DI
MUTING
VOLTAGE
REGURATER
+B7
RL
Q353
Q354
IF IN
IF OUT
FM MONO/ST MONO/ST
VR351
FM MUTE LEVEL
AM OSC
REGOUT
FM IF IN
X352
4.5MHz
OSC
STEREO
+B7
AM IN FM IN
FMOSC
T351
AM IF
L
R
R
L
AM IF
CF352
IN
X351 456KHz
FM IF CF351
VCC
+B7
GND
+B7
QS17
QS18
QS16
Q631
QS11
QT01
Q360
Q361
IC303
LA1832
FM IF DET./FM MPX./AM IF
Q361
BFT01
GND
SW1
SW2
MW
FM
FM BAND
PASS FILTER
SW2 +B
SW1 +B
Q364
QG05
Q363
+B7
+B7
Q308
Q309
Q306
Q307
MW +B
T307
T308
T303
T304
SW1/SW2
OSC.
SW1/SW2
ANT.
T306
MW OSC.
T302
MW ANT.
+B7
AMP
LT02
FM RF
LT01
FM OSC
ICT01
TA7358AP
FM FRONT END
TT01
FM IF
CF302
FM IF
+B6
P
A
L
R
L
R
ICS01
SRS5250AS
SRS
DI
OUT
AM RF IN
AFC
IN
TUNER
TUNER SD
Q362
+B7
FM +B
FM
SO301
ANTENNA
TERMINAL
FROM CD UNIT
AM IN
TUNER
CD
ICU01
LC75396N
AUDIO PROCESSOR
IN
Vref RVrefLVref
GRAPHIC EQUALIZER
IC302
LC72131
PLL CONTROLLER
+B7
+12V
+B7
-B6
IN
OUT
SD
VOLTAGE
REGULATOR
VCCMIC
IN
GND
MIC2 IN
AU
D
MIC SW
MIC1
VOL IN
MIC2
VOL IN
ECHO
VOL IN
AUX2
AUX1
R
L
R
L
51
61
52
60
LR LR
3
6
9
2
5
8
4
7
12
47
44
41
38
11
46
43
40
37
10
45
42
39
12
VOLTAGE
REGULATOR
SWITCHING
SW
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
QU02
QU01