Block Diagram - Sharp MD-MX30 Service Manual

MD-MX30/MX30W
SO301B
ANTENNA
TERMINAL
AM
GND
+5V
FM 75
8
FE301
ANT
FM FRONT END
2 6 7
FM/AM
7
FM
MW
8
TUN MUTE
9
MUTE
TUNER PLL CONTROLLER
MO/ST
10
MO/ST
STEREO
ST IND
11
IO2
13
SD
20
VT
FM MUTE LEVEL
+5V
VR351
SD
6
STEREO
7
13 MO/ST
12 PHASE
2
AM MIX OUT
AM IF IN
T351
CF352
AM IF
+5V
CF302
TO CD SECTION
CNS8 TO CNP8
TUNER
T302
AM
ANT
COIL
T306
AM
OSC
COIL
IF OUT 1
VCC
5
3 4
SWITCHING
+12V
Q360 +B3
FM/AM
Q371
DO
3 4 5 6
IC302
LC72131
19
18 16 15 12 22 1 21 17
+5V
4.5MHz
X352
TUN MUTE
IF OUT
23 24 10 9
LOUT
14
15
ROUT
(FM/AM) IC303
MPX
VCO
LA1832
4 8
17 1 20 21 18 16 FM IF DET./
FM MPX./AM IF
TO MD SECTION
Figure 32 BLOCK DIAGRAM (1/5)
+12V(A)
+B3
+B4 MDAVCC
TO MD
+B6 MDDVDD
+B5 CD+7V
TO CD
VOLTAGE
REGULATOR
+5V
+B3
+5V
+B14 +7V(M)
+B7 +5V(USWD)
+B8 +5V BACK UP
JTU01
AUX INPUT
MD/CD
AUX
TUNER
– 32 –
VOLTAGE
REGULATOR
+6V
M-COM.CONT.
+B12
LINE PULL-UP
+5V(SWD)
TO FAN MOTOR
SWITCHING
RESET
ICU03
QU07
PST9140
RESET
+5V(D)
SYS-STOP
2 1
+B7
3
VOLTAGE REGULATOR
+2.7V
+B3
AUDIO
Function/Volume/Tone
VDD
23
CL
12
1 2
13 ICU01
9 LC75341M
OUT
4
4
16 AUDIO PROCESSOR
21
10
3
DI
15
1
11
2
24
14
BASS TRE
SELO
CL
3 8 5 6 19
17 20
REC
OUT
TO DISPLAY SECTION
CNPU01 TO CNPD01
-12
-B3
+B3
+B13
MD
VO
REG
-B3
+B3
VC
5
3