Sharp CD-K491W - Block Diagram - Part 4; Tuner Section Block Diagram

CD-K491W
– 20 –
Figure 20 BLOCK DIAGRAM (4/5)
J602
MIC2
J602
MIC1
VR602
MIC2
VOLUME
VR601
MIC1
VOLUME
VR603
DIGITAL ECHO
VOLUME
IC601
M65845FP
MIC AMP.
L
R
10 25
26
19 18
27
29
28
31
1
6
5
Q631
+B7
VOLTAGE
REGULATOR
VCCMIC
IN
GND
IN
OUT
MIC2 IN
MIC SW
MIC1
VOL IN
MIC2
VOL IN
ECHO
VOL IN
43
8
1712
2113
20
1011161522
1
321
231
4
17
985
16
15
6
1412101321222324
7
18
9
7
38
5
1
9
6
7
6
5
DO
CE
CL
DI
MUTING
VOLTAGE
REGURATER
+B7
RL
Q353
Q354
IF IN
IF OUT
FM MONO/ST MONO/ST
VR351
FM MUTE LEVEL
AM OSC
REGOUT
FM IF IN
X352
4.5MHz
OSC
STEREO
+B7
AM IN FM IN
FMOSC
T351
AM IF
AM IF
CF352
IN
X351 456KHz
FM IF CF351
VCC
+B7
GND
QT01
Q360
IC303
LA1832
FM IF DET./FM MPX./AM IF
Q361
BFT01
GND
SW1
SW2
MW
FM
FM BAND
PASS FILTER
SW2 +B
SW1 +B
Q364
Q363
+B7
+B7
Q308
Q309
Q306
Q307
MW +B
T307
T308
T303
T304
SW1/SW2
OSC.
SW1/SW2
ANT.
T306
MW OSC.
T302
MW ANT.
+B7
AMP
LT02
FM RF
LT01
FM OSC
ICT01
TA7358AP
FM FRONT END
TT01
FM IF
CF302
FM IF
OUT
AM RF IN
AFC
IN
Q362
+B7
FM +B
FM
SO301
ANTENNA
TERMINAL
AM IN
IC302
LC72131
PLL CONTROLLER
+12V
IN
OUT
SD
33 34
VOICE C
MIC
DET
1
9
5
3
7
1
8
4
7
16
11
15
14
12
10
13
1
5
2
4
2
1
24
23
2
3
4
4
5
6
7
8
9
16
14
13
12
15 19
10
17
18
20
21
4
40
1
20
3
L
SPE IN
L-IN
RIN
L-OUT
L
R
L
R
R
L
L
R
TAPE
L
R
FUNC-A
FUNC-B
R
IN
OUT
L
R
ICZ09
NJM4565M
LINE AMP.
–B10
+B10
+B10
–B10
TUNER
VCR 1
VCR 2
L
JR11
VCR/AUX1
JR12
VCR/AUX2
ICH11
MOTOR
DRIVE
SWITCHING
M
MM1
TAPE
MOTOR
+B2
TA MOT H/L
HI SPEED
TA MOT SW
DRIVER
MOTOR
DRIVER
DRIVER
QL13
QL11
QL12
QL18
QL14
T1/T2 SOLENOID
DRIVER
SOLM1
SOLENOID
T1/T2 CrO
2
QL15
QL19
SWM5
T1 RUN2SW
SWM6
CAM SW
SWM3
REC FWD
SWM4
REC REV
SWM1
T1 CrO
2
SWM2
T2 CrO 2
+B6
CAM SW
PHM1
T22RUN
QK13
QK14
QL16
ERASE
HEAD
L-CH
R-CH
PB HEAD
L-CH
R-CH
REC/PB
HEAD
P.B
AC BIAS
P.B
REC
TAPE 2
TAPE 1
T1/T2
L NF
R NF
L(T1)
R(T1)
L(T2)
R(T2)
L
R
POP REDUCE
L REC
R REC
L
R
REC
ALC
NOR/
HIGH
T1/T2
REF
+B7
P.B
REC/PB
MUTING
MUTING
PB MUTE
REC MUTE
L NF
R NF
SWITCHING
SWITCHING
QK21
QK22
QK28
LK04
QK07
QK08
QK11
QK10
QK09
QK03 QK05
QK04 QK06
QK17 QK18
QK19
QK15
QK16
QK17
QK18
SWITCHING
BAIS
QK26QK24
BAIS
PB-EQ
T1 Cr0
2
T2 Cr0
2
HI SPEED
T2 REV-REC
T2 FWD-REC
QK31
QK32
QK27
Cr0
2
QK25
SWITCHING
BEAT CHANCEL
SWITCHING
LEVEL SHIFT
QK30
QK29
QK40
QZ03
QZ04
ICZ08
TC4052BF
DUAL 4CH ANALOG
MULTIPLEXER
TO DOLBY SECTION
ICK01 AN7345K
PLAYBACK&RECORD AMP
H/N
T1/T2
P.B.
REC
R
R
QL17
REC/PB
Cr0
2
SWITCHING
L
QG04
BIAS OSC.
VRM1
TAPE
SPEED
6
7
8
4
+B7
-B6
ICH11
MOTOR
DRIVE