Read Sharp HT-SB250 (serv.man2) Service Manual online
HT-SB250
4 – 1
CHAPTER 4. DIAGRAM
[1] Block Diagram
XM601
36.864MHz
~
JK802 (LINE IN)
L
R
h
c
L
L
+B2
L
R
R
h
c
R
+B5
JK801 (AUDIO IN)
~
L
+B2
R
2
0
6
D
3
B
+
T
C
E
T
E
D
_
L
V
L
6
B
+
V
3
.
3
D
JK803
DZ801
V
0
2
/
A
5
B
2
5
K
S
V
0
.
5
A
R
O
T
P
A
D
A
1
B
+
N
I
C
D
12V 4A
+B1 +B4
DZ802
DZ803
5.6B
13A
+B5
~
+B3
2
0
8
D
1
0
8
D
4
B
+
+B2 +B1
+B3
UNSW 3.3
D604
~
+B6
D605
IC801
LD29080
3
2
2
IC803
AP2213
IC802
KIA1117F33L
4
3
2
IC601
WM8775
28
1
25
24
6
14
16
7
AVDD
DVDD
17
8
9
IC602
NJU260409
SRS WOW
1
7
25
5
9
12
13 28
32
4
2
2
3
6
7
8
IC605
PST8227N
3
2
1
Q601
RESET
1
3
35
POWER
17
18
14
19
6
26
27
27 28 30
8
+B1
+B2
23
24
15
20
21
36
DC_RLY
44
42
43
SYS
PROTECT
PROTECT
Q802
AMP_12V
DC_12V
XM603
32.768kHz
MICOM_UNSW
VREF
10
48
46
IC604
IXA229AW
SYSTEM
MICROCOMPUTER
IC603
TJM4558CD
38
1
4
18
21
3
8
Q605
Q604
Q602
17
19
18
22
3
5
8
VDD
1
10
11
14
16
~
2
4
5
2
1
3
10
11
FROM AC/DC
CNP302
CNP102
CNP803
CNP902
3
4
2
1
Q701
Q702
KEY
SW702-SW705
CNP502
D_GND
BI502
KEY
SW701
+B8
1
2
3
4
5
6
7
8
9
+B4
D_1.8V
DGND
DGND
+B3
D_3.3V
MICOM GND
+B9
UNSW_3.3V
DGND
D_5V
+B2
D_1.8V
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
2
0
3
W
W
N
C
Z
P
W
W
A
4
5
1
B
N
1
2
3
4
5
6
7
8
9
+B3
+B6
1
2
3
4
5
6
7
8
9
D_3.3V
DGND
DGND
2
0
7
D
E
L
D
R
S
5
6
1
L
C
AMP_GND
AMP_GND
AMP_GND
AMP_12V
AMP_12V
AMP_12V
+B2
+B3
REMOTE
SENSOR
SENSOR
1
2
3
Figure 4-1: BLOCK DIAGRAM (1/2)
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