Sharp CD-K491W Service Manual page 18

CD-K491W
LOW PASS FILTER &
ANAROG RCH
2
IN
TO
A-GND
MAIN
SECTION
ANAROG LCH
2
IN
A-GND
DVD2
DIGITAL
IN
JA11
DVD2
DIGITAL
IN
FROM CD UNIT
JH51
VIDEO1 IN
VIDEO2 IN
MONITOR
OUT
ICA12
NJM4580M
DIFFERENTIAL AMP
+B7
8
IN OUT
1 6
7
4
AINR–
OUT
AINL–
+B7
8
IN
1 6 7
4
ICA11
NJM4580M
LOW PASS FILTER &
DIFFERENTIAL AMP
TOS
ICA15
ICA14
TC74HCU04
GP1F38R
INVERTER
IN
1 4
6
IN
8
13
10
7
14
+B13
D4-GND
ICH51
NJM2246M
SWITCH
1
3
QH51
7
8
6
+B7
+B7
V-GND
Figure 18 BLOCK DIAGRAM (2/5)
23 24
AINR+
3
AINR–
4
AINL+
5
AINL–
6
2
8
18
19
AINL+
OUT
20
22
25
1 7 9
10 21
A-GND
+B9 +B13
ICA16
TC74HCU15
SWITCH
IN
3
14
IN
D-OUT
4
7
IN
5 9
2
8
16
1 6 11 ~ 13 15
D4-GND
SWITCHING
DGTL2
QH53
2
V1/V2
QH52
4
SWITCHING
– 18 –
DEM0
16
DEM1
17
SCK
15
CLK
11
CLK2L/R
12
SL/SR IN
13
D-OUT
14
LS OUT
27
26 RS OUT
DGTL1
DGTL2
+B13
DGTL2
V1/V2
LS/RS
OUT
83 79 91 97 92 95
D-IN
61
4
36 60 62 85 86
D3-GND