Sharp CD-PC1881V Service Manual page 16

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