Sharp CDC2900 - 3-CD Compact Stereo System

CD-C622/C2900
– 18 –
Figure 18 BLOCK DIAGRAM (2/3)
5
6
21
16
22
13
20
16
21
17
1 3
24
23
15
20
1
22
15
9
10
11
7
11
3 4
5
6
10
GND AM IF
FM DET
FM DET
FM IN
IC302
LC72131
PLL (TUNER)
OSC
VR351
MPX VCO ADJ
AM IF
AM MIX
AM IN
AM+B
AM RF IN
X352
4.5MHz
FMOSC
AM TRACKING
AM BAND
COVERAGE
T351
+B4
+B4
T352
IC303
LA1805
FM/AM IF MPX.
DET OUT
L
R
STEREO
AM OSC IN
Q343
Q350
VT
DO DI CL CE
1
24
2
23
3
4
4
21
5
20
6
7
17
8
9
16
10
14
12
13
18
H/N
T1/T2
R-CH
L-CH
L-CH
R-CH
P.B
REC
TAPE 2
TAPE 1
L NF
L(T1)
R(T1)
L(T2)
R(T2)
R NF
L
R
POP REDUCE
L REC
R REC
L
R
REC
P.B.
REC
ALC
NOR/
HIGH
T1/T2
REF
L NF
R NF
PB HEAD
REC PB HEAD
SWITCHING
Q103~Q106
AC BIAS
IC101
AN7345K
PLAYBACK AND RECORD
/PLAYBACK AMP.
PB
ERASE
HEAD
SWITCHING
BAIS
Q126
Q124
L103
Q128
L104
Q111
Q110
Q109
Q107
Q108
SWITCHING SWITCHING
SWITCHING
+B4
1
2
3
CNS11
FROM CD SECTION
CNP11
17
+B4
VOLTAGE
REGURATER
SWM3
FOOL PROOF
SWM4
F.A.S
SOLM1
SOLENOID
SWM5
CAM
5
16
4
17
3
18
2
19
1
20
9
IC601
M62439SP
AUDIO PROCESSOR
L
L
R
R
L
R
L
R
L
R
L
R
TUNER
AUX
TAPE
CD
3
IC704
1
+B7
2
BAIS
T1/T2
REC
MUTING
Q121
Q122
–B4
FM/AM
SWITCHING
13
8
9
1
2 3 4
5
7
8
6
Q302
FM IF IN
FM IF
FM RF
FM
OSC
T301
FM OSC
FM
ANTENNA
FM B.P.F
IC301
TA7358AP
FM FRONT END
L303
L302
OSC BUFF
L301
7
FM
Q344
FM +B
SWITCHING
CF301
FM+B MO/ST
VCO
FM/AM
BIAS
OCS
15 19
11
10
MONO/ST
JK601
VIDEO/AUX
MPX IN
AM LOOP
ANTENNA
T331 T333
CF351