Read Sharp SD-CX1 (serv.man6) Service Manual online
SD-CX1H
– 38 –
Figure 38 BLOCK DIAGRAM (1/4)
1
3
2
1
3
3
1
L341
LOW PASS
FILTER
L354
SO301A
CF351 FM IF
X351 456kHz
X352
4.5MHz
24
23
22
21
20
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
2
1
22
21
20
17
16
15
13
12
11
10
9
8
7
6 5
4
3
1
8
7
6
5
4
3
2
1
AM
GND
+B
TP302
AM IF
FM IF
IN
FM IF
AMP
FM IF
FM IF
+B
+B
+B
FM
75ohms
ANTENNA
TERMINALS
CE
CLK
DO
DI
GND
X IN
IC302 LC72131
PLL CONTROLLER
Q371
Q360
SWITCHING
+B
FM +B
AM OSC.
AM RF
AFC
T306
T302
VT
FM OSC
AM IN
FM IN
SD
IF IN
MUTE
FM MONO/ST
STEREO
AM RF IN
AFC
IN
OUT
MPX
VCO
CUT
OUT
IF
AM OSC
IF IN
F M
OUT
IC303
LA1832
FM IF DET./FM MPX./AM IF
TUN_R
TUN_L
A_+12V
SM
D_GND
CE
CLK
DO
DI
R-CH
L-CH
OUT
FM/AM
IN
MPX
+5V
VOLTAGE
REGURATOR
MPX
PHASE
5V
AM
ANTENNA
FM
MUTE
LELEL
VR351
10K(B)
CF352
T351
CF302
Q301
CF301
FM FRONTEND
FE301
2
2
AM IF
TP301
X OUT
VD301
JTU01
CNPU04
QP07-QP10
MUTING
QP04
QP03
QP03
QPO5
MUTING
DU01
DISPLAY SECTION
DISPLAY SECTION
HEAD PHONE
ALC
+B6
MD+5V(D)
+B8
MD+6V(A)
POWER SECTION
–12V(A)
+12V(A)
POWER SECTION
ICP01
PRE AMP.
NJM4558M
1BITAMP SECTION
DISPLAY SECTION
DISPLAY SECTION
–VCC
+VCC
–B2
+B7
CD SECTION
TO MD SECTION
L-CH
R-CH
AUX INPUT
+12V(A)
+B7
TUN_R
TUN_L
TUNER_SM
CE
CLK
DO
DI
+B8
MD+6V(A)
MD+6V(A)
+B6
MD+5V(D)
MD+5V(D)
DIG-IN
D-GND
POWER
MD_RESET
MD-ST
MD_DSCK
MD_SERCH
MD_KDATA
MD_DATA
MD_D_STB
D-GND
D-GND
D-GND
D-GND
D-VDD
D-VDD
MD_LOADSW
A-VCC
AA-GND
AD-GND
L_IN
R_IN
R_OUT
L_OUT
GND(A)
AUDIO
FUNCTION/VOLUME/TONE
ICU01
LC75341M
AUDIO
PROCESSOR
R-CH
L-CH
REC OUT
GND
SELO
CLK
DI
CE
R
R
R
L
L
L
TUNER
AUX
MD/CD
+B7
TRE
BASS
NC
NC
ICS01
PRE AMP.
KIA4558F
SURROUND
R-CH
L-CH
R-CH
L-CH
+B7
–B2
+VCC
–VCC
R-CH
L-CH
SURROUND
ON/OFF
QS01
QS02
SYSTEM_MUTE
QP02
QU01
QU01
QPO6
R-CH
L-CH
6
3
7
2
1
8
5
6
5
3
8
4
1
7
2
4
28
27
27
26
25
24
24
23
22
21
19
1
3
8 17
4
21
16
9
15
10
13
12
14
11
20
5
23
20
19
18
17
16
16
15
14
14
13
12
11
11
10
9
8
7
6
5
8
7
6
5
2 24
4
3
2
1
3
2
1
VDD
R
L
18
19
24
23 22 21 20
3
14
9
10
11
16
17
5
13
1
4
15
7
8
2
6
12
CE
DI
CL
DO
SYNC
RDS-ID
SYR
FLOUT
XIN
VREF
VDDD
VDDA
T3
T4
T5
T6
T7
T2
VSSA
MPX IN
T1
VSSD
CIN
XOUT
ICT21
LC72720
RDS DECODER
4.332MHz
+5V
XT21
FM/AM
QT21 AMP.
6
BALUN
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