Sharp CD-C811W Service Manual page 16

CD-C811W/821W
CD-C821W
SO301
AM/FM ANTENNA
TERMINAL
FM
75 ohms
GND
AM
FROM CD PWB
CNP11
L-CH
R-CH
PLAYBACK
HEAD
TAPE 2
L-CH
R-CH
RECORD/
PLAYBACK HEAD
ERASE
HEAD
FE301
8 1 1
FM FRONT END
5
2 6 7 3 4
AM RF
AM ANT AM OSC
T306
T302
CNS401
1
2
3
4
TAPE 1
REC SWITCHING
P.B
Q501~Q509
POP REDUCE
AC BIAS
Figure 16 BLOCK DIAGRAM (4/5)
FM IF
AMP
FM IF FM IF
3
CF301 Q301 1 CF302 3
AM IF
FM IF IN
2
1
OUT
VR351
AM
FM MUTE LEVEL
OSC
OUT
24 23
FMOSC
X352
4.5MHz
20 1 22
+B4
LC72131
Q360 7
FM
PLL CONTROLLER
VOLTAGE
REGULATOR
IC501
AN7345K
PLAYBACK AND RECORD
/PLAYBACK AMP.
L(T1)
1
13
R(T1) 24 P.B.
4
L
L(T2)
2
21
R
R(T2)
23
L NF
3 5
R NF 4 20
H/N
6 T1/T2
7
18
REC
L REC 9
R REC
16
8 L NF
17
R NF
14
RIPPLE
NC
10
12
NOR/
CRO2 T1/T2
15 19
– 16 –
+B4
+B4
AM IF
CF352
T351
1 3
3 4
5 8 9
REG IN GND VCC
IC303
LA1832
FM IF DET./FM MPX./AF IF
7 6
22 21 13 10 11
12
Q361
SWITCHING
VOLTAGE
REGURATER
+B4
+5V
15 16 11 10 13 12 17
IC302
3 4 5 6 21
Q371
TAPE
L 4
R
17
TUNER L 3
AUDIO PROCESSOR
R
18
CD L 2
R
19
TAPE MUTING
SPARE
Q510
Q511
SWITCHING
Q514
+B4
Q515
Q516
PB
BIAS OSC
L REC
R
FOO
S
17 19 20
14 15
L R
MUTING
Q353
Q354
TUNER MUTE
+B4
11 10
IC401
R
13
M62439SP
8 L
1 9
20
Q512
Q513
SWITCHING