Sharp CD-K491W Service Manual page 19

TO MAIN SECTION
SCK
CLK
CLK2L/R
2 8
91 97 92 95 66 19 29 37 44 53 65 68 71
GND
ICA18
ZR38600
DOLBY AC-3 /5.1
MPEG2 AUDIO
DECORDER
85 94 5 48 6 12 17 30 35 45
60 62 86 78 90
TO MAIN SECTION
D3-GND
3
34 82 87 89 80
CENTER
54
SUB
WOOFER
OUT
VDD
55 59 67 70 81 84 93
+B13
ICB01
NJM4580M
MIX AMP
OUT
L
1
7
R
SUB
FL/FR CENTER
WOOFER
OUT
OUT
Figure 19 BLOCK DIAGRAM (3/5)
SUB
WOOFER
ON/OFF
QA01
QA02
SWITCHING
12
QA03
13
SUB
WOOFER
2
OUT
9
10
A-GND
+B7
+B12
SUB
WOOFER
8
3
5
MIX FL/FR
4
IN
–B12
OUT
– 19 –
PD
6
DEM0
12
DEM1
13
XT1
5
LRCK
9
BICK
7
FL/FR
8
IN
1 3
10 11 21
A-GND
D3-GND
PD
6
DEM0
12
DEM1
13
XT1
5
LRCK
9
BICK
7
CENTER
8
SUB
WOOFER
1 3
10 11 21
IN
D3-GND A-GND
ICA21
5 6
NJM4580M
–15dB AMP
4 8
1
7
8
4
11
–B12
ICA22
14 7
BU4066BCE
SWITCH
–B12
–B12
VOLTAGE
REGURATER
+B12
VOLTAGE
REGURATER
+B13
QB01
VOLTAGE
REGURATER
UN-SWITCHED
CD-K491W
+B12
16
20
22
2
14
15
24
FL
18
17 FR
OUT
+B12
16
20
22
2
14
15
24
CENTER
18
17
SUB
WOOFER
+B7
SUB
WOOFER
5
IN
–B6
+B7
+B9