SD-SG11 (serv.man3). 2 - Notes on schematic diagrams, Block diagrams (17-24) - Sharp Audio Service Manual (repair manual). Page 3

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– 19 –
SD-SG11H
Figure 19 BLOCK DIAGRAM (2/7)
TO MD SECTION
TO TUNER UNIT
TUN1
MPX IN
CNPU04
CNSU03
CNSU01
CNPU09
CNPU08
CNPU07
CNPU05
CNSU02
MD_LOADSW 
MD_SERCH
MD_DSCK 
MD_DATA_
MD_RESET
MD_ST 
MD_KDATA
POWER 
MD_D_STB_ 
POWER 
CD_FUNC 
MD_LOADSW 
LINE_MUTE 
R_AUX_IN
L_AUX_IN
L__REC_OUT
R__REC_OUT
R_PRE_OUT 
L_PRE_OUT 
DO
DI
TUN_MUTE
LCK2
LCK1_ 
DO
MD_SERCH
MD_D_STB_ 
MD_KDATA
MD_ST 
LRCK
DATA
BCCK
MD_RESET
MD_DSCK 
MD_DATA_
CLK 
CE
DI
TUN_R 
TUN_L 
COMP
CD_FUNC 
CLK 
TUNER_SM
DATA
LRCK
BCCK
DI
CLK 
LCK2
HP_SW 
PROTECT 
CD_FNUC 
POWER 
R_H/P_OUT 
L_H/P_OUT 
+B13(5V)
BACK  UP
+B12(5V)
+B3(5.6V  USWD)
+B7 
(+12V)
+B5(5V  SWD) 
VF2 
VF1 
–VP 
+B8(6V) 
+B6(5V) 
+B5(5V  SWD) 
+B3(5.6V  USWD)
SYSTEM MUTE 
QP03
QP04
QP05
+B4(8V) 
+B11(5V  CD) 
–B2(–12V)
+B7(+12V)
VF2 
ICP01
NJM4580M
BUFFER AMP.
+B3(5.6V  USWD)
CD DIGITAL SIGNAL
ALC 
QP11
QP12
+B7
(+12V)
–B2
(–12V)
+VCC
–VCC
R-CH
L-CH
RESET 
STOP
SYSTEM
HP_SW 
AUX+B
PROTECT 
TUN_ST/SD 
ICE04
PST9140
RESET
QD06
QD12
RESET 
SYSTEM
STOP
QP09
QD13
QU04
QP01
QP02
SYSTEM_MUTE 
L-CH
R-CH
L-CH
R-CH
+B7(12V)
DIG-IN
GND 
+B11(5V  CD) 
VOLTAGE
REGULATOR
+B11(5V  CD) 
+B5(5V SWD) 
VOLTAGE
REGULATOR
ICU02
74VHC00F
INVERTOR
ICU04
74VHC08F
INVERTOR
ICU05
LC89051V
DIGITAL  AUDIO
INTERFACE
MD/CD 
AUX 
TUNER 
CE
DI
CLK 
SELO
GND 
REC
OUT
ICU01
LC75341M
AUDIO
PROCESSOR
+B6(5V) 
+B8(6V) 
DIG-OUT 
DIG-IN
D-GND 
BACKUP
PDOWN 
RESET 
MD-ST 
DSCK
SERCH 
KDATA 
MDDATA
DSTB
D-GND 
D-GND 
D-GND 
D-GND 
D-VDD 
D-VDD 
PCONTO
LOADSW
A-VCC 
AA-GND
AD-GND
TO MD SECTION
L_IN
R_IN
R_OUT 
L_OUT 
GND(A)
VEE 
VCC 
VREF
+B12
VP 
+B13(5V) BACK  UP 
TER
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
12 
2
3
3
10 
11 
15
1
5
3
1
7
14 
16 
14 
8
1  2 
12 
23
21
10
22
2
12  13 
14 
11 
37
36
33
41 45
31
42
59 57
98
91
100
5
9 2 
14 
6 1 
12 
5 11
13 
10 
22
21
20
19
18
17
16
24 
17 
12 13 
15 
21 
16 
23 
35
34
10
30
13 
15 
18 
7
10
19 
17 
8
6
5
1
4
12 
13 
9
11 
2
TO POWER 
SECTION
TO CD 
SECTION
TO POWER 
SECTION
TO POWER 
SECTION
TO POWER 
SECTION
BUFFER
MUTE
DRIVE
RESET
DRIVE
QD07
QE01
QD08
CE
DI
CLK
VSSA
XOUT
XIN
T1
T2
VSSD
DO
VDDA
VDDD
TUN_FM
XT21
4.332MHz
23 22 21 20
15
12 13
14
2
3
4 7
8
+B5
(5V SWD)
ICT21
LC72720
RDS DECORDER
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