Sharp CD-PC1881V Service Manual page 16

CD-PC1881V
SO301
ANTENNA
TERMINAL
FE301
FM
8
75 ohms
FM FRONT END
GND
2 6 7
AM
AM RF
AM ANTENNA
T302
VD301
CNS11
FROM CD VIDEO
SECTION CNP11
TAPE 1
PLAYBACK
HEAD
L-CH
R-CH
REC
P.B
L-CH
Q103~Q106
R-CH
TAPE 2
RECORD/
AC BIAS
PLAYBACK
HEAD
ERASE
HEAD
FM IF
1 1 CF302 3
2
5
3 4
VR351
FM MUTE LEVEL
FMOSC
AM OSC.
T306
VD301
+B4
Q360
FM
VOLTAGE
REGULATOR
JK401
VIDEO IN
L-CH
VIDEO2
R-CH
L-CH
VIDEO1
R-CH
1
2
3
IC101
AN7345K
PLAYBACK AND RECORD/
PLAYBACK AMP.
L(T1)
1
R(T1) 24
L(T2)
2
R(T2) 23
SWITCHING
L NF 3
4
R NF
6 T1/T2
POP REDUCE
REC
L REC 9
R REC
16
REF 14
12
NOR/
HIGH
15
SWITCHING SWITCHING
Q107
Q111
Q108
Q109
SWITCHING
BIAS
OCS
Q128
L104
Figure 16 BLOCK DIAGRAM (2/3)
FM DET
+B4
CF351
AM IF
T351 CF352
+B4
FM IF IN
2 4
1 5 8 9
OUT IN GND
VCC
IC303
LA1832
IF
FM/AM IF MPX.
AM OSC OUT
23 21 7 13 6 10
24 22
VOLTAGE
REGURATER
X352
4.5MHz
20 1 22
15 16 11 10 13 12
X IN X OUT IC302
LC72131
7
PLL (TUNER)
3 4 5 6 21
Q371
VIDEO2
VIDEO1
TAPE
TUNER
CD
13 +B4
P.B.
4 PB
L
21
R
5
20
H/N
7 L REC
18
R
L NF
8
17
R NF
ALC
10
T1/T2
19
Q110
SWITCHING
Q124
– 16 –
SWM3
FOOL PROOF
SWM4
X351
F.A.S
456kHz
SOLM1
SOLENOID
SWM5
CAM
17 18 16
FM/AM MPX
OUT
IN
14
11 12 15
L R
MUTING
Q361 MPX Q353
MPX
VCO Q354
PHASE
CUT
TUNER MUTE
+B4
+5V
17
23 24 25
56
L
51
R 61
L 52
IC401
R 60
LC75396N
53
L
R AUDIO PROCESSOR
59
L 54
R
58
L
55
R
57
63 49 26
Q121
Q122
MUTING
L
R
44 45
34
IC501
38
22
LV1035M
35
DOLBY PRO LOGIC
9
37
DECORD
36
33 32
X501
8MHz
BAIS
Q126
Q
M
Q
MM1
TAPE MOTOR
VOLUME
JOG
VR702
+B4
20
28
R
17
31 L
30
18
REC
Q405
ZD801
T1/T2
Q903
13 9 7
IC951
BAIS 12
LA4451
POWER AM
11 4