Sharp SD-EX220 (serv.man2) Service Manual ▷ View online
SD-EX220H
4 – 3
CNPS01
BIS01
CNS531
CNPS02
ZD402
ZD400
ZD401
TO MAIN SECTION
TO MAIN SECTION
MUTING
Q544
Q543
SP_RELAY
AD_RESET
OFFSET_PROTECT
OFFSET_COMPA
D+5V
QS01
QS08
QS07
QS06
QS02
QS03
QS04
QS05
QS10
QS14
QS13
QS12
QS11
TO 1-BIT AMP. SECTION
SO421
SPEAKER
TERMINAL
FAN_LOCK
FAN_MOTOR
Q422
Q421
Q423
+
-
M
Q424
TO PROTECT CIRCUIT SECTION
+12V
-9V
+4.7V
-5.6V
A_-20V
+5.1V
+3.3V
A_+20V
+7.9V
+9V
IC400
KIA7812AP
VOLTAGE
REGULATOR
IC402
KIA7808AP
VOLTAGE
REGULATOR
IC401
KIA7809AP
VOLTAGE
REGULATOR
Q551
Q552
CNP501
TO DISPLAY SECTION
S_MUTE
SURROUND
SP_RELAY
H/P_R_OUT
H/P_L_OUT
UNIT
TUN_CE
TUN_DI
TUN_CLK
TUN_DO
TUN_L
IC501
LC75341M
AUDIO PROCESSOR
VDD BASS
L_CH
R_CH
R_CH
ÑVCC
+VCC
Q536
Q535
Q550
Q549
Q581
Q538
Q545
Q546
Q539
Q540
Q547
Q548
MUTING
HEADPHONE
SURROUND
ON/OFF
SYSTEM
MUTE
R_CH
L_CH
MUTING
SURROUND
SURROUND
ON/OFF
GND
L
R
L_CH
R_CH
JT501
AUX INPUT
L
R
AUX
TUN_L
TUNER
TUN_R
R
L
CD
IC502
NJM4565M
BUFFER AMP.
+9V
DI CECLK
23
12
6
7
11
24
13
5
4
10
9
16
1
3
8
7
17
14
2
1
21
4
15
6
2
13
3
15
20
5
6 8 9
11
10
6
5
4
3
2
1
1
2
3
4
1
2
3
4
1
2
3
4
3
1
1
1
3
3
2
2
2
+
+
-
-
RL421
BASS
CONTROL
SWITCHING
SWITCHING
A/D RESET
SWITCHING
OFFSET
SWITCHING
OFFSET
SWITCHING
A/D RESET
SWITCHING
A/D RESET
SWITCHING
CURRENT
DETECT
CURRENT
DETECT
CURRENT
DETECT
CURRENT
DETECT
SWITCHING
FAN
SWITCHING
FAN
SWITCHING
FAN
SWITCHING
RELAY
SWITCHING
8
4
3
2
1
5
6
7
MUTING
MUTING
MUTING
DRIVER
-5.6V
+9V
M401
FAN MOTOR
TO 1-BIT AMP.
SECTION
IC503
TJM4558CD
OPE AMP.
JK500
SUBWOOFER
OUT
SD-EX220H
4 – 4
R-CH OUTPUT
OFFSET
ADJUSTMENT
L-CH OUTPUT
OFFSET
ADJUSTMENT
24
23
22
21
20
17
16
15
14
11
10
9
8
8
7
6
5
4
3
2
1
1
CXA100
LFA402
LFA403
CNA100
DA404
8
4
11 10 9
12 13 14
1
7
11 10 9
12 13 14
4
3
2
1
7
6
5
4
3
2
1
CNA101
TO
MAIN
SECTION
TO
POWER
SECTION
AMP_VCC
A+5V
D+5V
D+5V
A+5V
QA400
QA416
QA414
QA415
RCH_1
LCH_1
COMPA
OFFSET
11.2896 MHz
A+5V
AGND_AD
DGND_AD
D+5V
VCC
GND
VKK
VKK
INB
INA
VKK
VKK
GND
VCC
INB
INA
L-CH_IN 1
AGND 1
R-CH_IN 1
PROTECT
PROTECT
OFFSET
RESET
NFR1(+)
NFL2(-)
NFL1(+)
NFL1(+)
NFR2(-)
GNDA
GNDA
R-CH IN
L-CH IN
RESET
VDA
VDDL
GNDD
OUTL(+)
OUTL(-)
OUTR(-)
OUTR(+)
VDDR
VDDX
XI
XO
GNDX
ANALOG IN R-CH
ANALOG IN L-CH
3
2
1
1
VDD
VSS
ICA100
IX0498AW
7TH ORDER Æ·
MODULATION
CONVERSION LSI
PROTECT
DETECT
PROTECT
DETECT
PROTECT
DETECT
CURRENT
SENSOR
VRA101
VRA100
SD-EX220H
4 – 5
BIA103
LFA101
DA107
DA116
LFA100
A404
ICA401
TJM4558CD
8
4
LFA400
ICA102
SLA5515M
SWITCHING
AUDIO
POWER
A
MP.
ICA101
SLA5515M
SWITCHING
A
UDIO
POWER
A
MP.
PSA400
11 10 9 8
7 6
5 4 3 2 1
12 13 14 15
16
17 18 19 20 21
1
2 3
7
6 5
11 10 9 8
7 6
5 4 3 2 1
12 13 14 15
16
17 18 19 20 21
5
4
3
1
6
5
4
3
5
4
3
1
BIA104
TO
PROTECT
SECTION
FROM
POWER
SECTION
OPE AMP.
OFFSET
VOLTAGE
DETECTOR
OFFSET
VOLTAGE
DETECTOR
AMP_VCC
+B_AMP
GND
+B
MHz
GND
VBOOTA
VBOOTB
DTADJA
OUTB
VBBB
DTADJB
OUTB
SA
VCC
SB
GND
VKK
VKK
OUTA
VDD
INB
OUTA
VBBA
VBBB
INA
VBBA
VKK
VKK
GND
SB
VCC
SA
OUTB
DTADJB
VBBB
OUTB
DTADJA
VBOOTB
VBOOTA
VDD
VBBB
INB
OUTA
VBBA
INA
VBBA
OUTA
L-CH_+1
L-CH_-1
R-CH_-1
R-CH_+1
DRIVER_+9V
+B
2
1
1
2 3
1
3
1
2
VDD
VSS
-
+ -
+
SD-EX220H
4 – 6
D938
D908
D942
D937
D930
ZD933
IC931
SE-B2
2
IC933
KIA7809AP
3
1
IC934
KIA78L05
3
1
D944
D939
B1900
PC902
BI932
D901
IC901
STRF6267
5
2
1
D902
T903
SUB POWER TRANSFORMER
D950
D953
D951
D952
L902
AC LINE
FILTER
AC POWER
SUPPLY CORD
L901
AC LINE
FILTER
F901
CNP901
CNS901
T901
MAIN POWER TRANSFORMER
CNP934
ZD931
CNP931
PC901
2
2
1
3
3
4
1
3
POWER
+B_CHK
Q931
-VP
-VF1
-VF2
Q933
+40V
+40V
DRIVER_+9V
A_-20V
VOLTAGE
REGULATOR
A_+5V
D_+5V
AMP.
ERROR
REGULATOR
VOLTAGE
SWITCHING
REGULATOR
Q902
A_+20V
A_+20V
D5.6V (UNSW)
SUB TRAN +B
TO
DISPLAY
S
ECTION
TO
1-BIT
A
MP.
S
ECTION
TO
11BIT
AMP.
SECTION
TO
MAIN
SECTION
FB/SYNC
Drain
T3.15A L 250V
SYNC
OCP
GND
Vin
1
4
3
2
1
3
2
4
1
3
2
4
1
8
7
6
5
4
2
9
10
2
3
4
5
6
7
8
9
10
3
5
4
2
11
AC 230V, 50 Hz
1
2
1
2
SWITCHING
VOLTAGE
REGULATOR
SWITCHING
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