Service manual

CD-BA1500H
– 22 –
Figure 22 BLOCK DIAGRAM (2/3)
REC/PLAY
CL
CE
DI
SYSTEM
MUTE
Q401
Q402
DO CL DI CE
MO/ST
SWITCHING
+B2
FM/AM
IC302
LC72131
PLL(TUNER)
FM/AM
OUT
+B2
L
R
BIAS
T1/T2
MUTING
Q110
Q111
P.B.
REC
AC BIAS
R
L
SO401
VIDEO/AUX
L
L
R
R
R
L
R
L
AUX
TAPE
TUNER
CD
PB
CNS402
FROM
CD SECTION
CNP11
ERASE
HEAD
SWITCHING
SWITCHING
SWITCHING
BIAS
Q102
Q103
Q101
Q113
SWITCHING
Q112
L103
OSC
BIAS
Q114
L104
Q108
Q109
REC PLAYBACK
HEAD
TAPE 2
PLAYBACK HEAD
TAPE 1
R-CH
L-CH
R-CH
L-CH
IC401
LC75341
AUDIO PROCESSOR
H/N
P.B
+B2
R
L
R
L REC
L NF
R NF
ALC
REC
T1/T2
T1/T2
NOR/
HIGH
REF
R REC
L REC
POP
REDUCE
R NF
L NF
SWITCHING
Q104~
Q107
L(T2)
R(T2)
R(T1)
L(T1)
IC101
AN7345K
PLAYBACK AND RECORD
/PLAYBACK AMP.
R
L
FM/AM
MPXIN
STEREO
AM RF IN
AM OSC IN
FM
Q360
VT
FM OSC
OSC
X352
4.5MHZ
AM BAND
COVERAGE
AM TRACKING
T303
X351
456KHz
MO/ST
VCO
FM
DET
VCC
GND
AM IF
CF351
AM IF
IC303
LA1832S
FM/AM IF MPX.
AM MIX
CF352
T351
CF301
FE301
FM FRONT END
22
3
21
4
24
2
1
8
18
17
5
4
3
9
10
18
11
16
3
15
10
9
7
23
14
12
13
1
2
20
19
7
18
10
8
17
13
21
4
5
2
24
23
6
9
16
14
12
15
1
5
14
3
8
4
3
2
21
7
9
8
5
6
21
2
1
20
22
11
17
1615
5
67
13
14
12
15
16
23
4
7
FM
+B
4
T306
17
AM LOOP ANT
SO301
ANTENNA
TERMINAL
L341
BALUN
24
1
VSSD
VDDD
XIN
XOUT
VSSA
VDDA
MPX
IN
DO
CL
DI
CE
XT21
4.332MHz
ICT21
LC72720
RDS DECORDER
4
2
3
23
22
21
20
15 14
13
12
L354 @
CF302
Q301
3
3
1
1
1
2
1
2
CNP302
LOW PASS
FILTER
3
1
R
L
+B2
VCC
+5.1V
VDD