Kenwood KOS-A200 Service Manual page 17

P
A8V
C320
100P
C86
1
7.8V
IC14
R144
5
22K
3.1V 1
IN
CTL
0V 2 5.0V
A5V REG.
GND
C88
1.3V 3 4
NIS OUT
0.047
TP102
C87
4.7
C91
0.1
IC13
8.2V
4.1V 1 8
VCC
7 4.1V
4.1V 2
4.1V 3 6 4.1V
0V 4 5 4.1V
GND
C84 C82
1500P 1500P
OP AMP
8
6
BU3.3V
3.3V
0V
3.3V 0V
0V
3.3V
MIN : 2.7V
MAX : 3.6V
IC1
USB MAIN
u-COM
2.7V
3.3V
DATA MUTE
ROM EMPHASIS
3.3V
DA EMPHASIS
0V
0V
TP124
TP125
BU3.3V
Q
7
7
48
11
R101
2.4K
8
9
10
100
NC
99
NC
98
NC
97 3.3V
AVCC
96 0V
VREF
C26
95
NC
0.1
94 0V
AVSS
93
NC
92
NC
91
NC
90
9
NC
89
NC
88
R48
NC
87 4.7K
NC
86
R18
NC
1K
85
BREQ 85 10
R17
220
84
SREQ 84
83
R42
NC
100
82
CS RST 82
R25
81
81
1K
80 0V
80
10
R359 47K
R358
79 3.3V
47K
78
DSP A0
77 3.3V
DSP RST
C25
76
NC
0.1
10
R
IC18
14 0V
AGND
5.0V
15
13 2.5V
AVDD
VOUTR
2.5V
16
12
VOUTL
C68
MODE8X
17
C69
11 2.5V
DIFFHW
VMIDR
10
2.5V 18
10 0V
VMIDL
AGNDR
0V 19
AGNDL
9
AVDDR
5.0V 20
AVDDL
5.0V D9
3.3V 21
ZERO
3.3V 22
RSTB
R150
3.3V 23
CSBIWO
8 3.3V
10K
0V 24 DVDD
MODE
3.3V 25
7 0V
97 MUTEB
DGND
0V 26
6
MD
XTO
3.3V 27
5
MC
XTI 78
28
4
ML
CLKO
3
3.3V
BCKIN 92
0V 2
DIN 94
1
LRCIN 93
11
24 BIT D/A CONTROLLER
10
A3.3V
0V
1
LD
2
PD
1.8V
3
PN
3.3V
4
AVDD1
5
C21
DGND1
1000P
D2
6
RFOK
R29
1K
0V
7
CP7 1K INTQ
8
18 RST 3.3V
9
A0
10
32 STB
11 3.3V
31 SCK
0V
CP5 1K
12
30 SO
13
29 SI
CP19
14
10K
DVDD1
15
DAVDD1
16
3.3V
ROUT
0V 17
DAGND1
C17
1.6V 18
REGC
0.1
0V 19
DAGND2
20
LOUT
3.3V 21
DAVDD2
22
C66 R130
XVDD
8P 100
23
3.3Vp-p
XTAL
X1
1.8Vp-p
16.898MHz
C67
24
3.3V
XTAL
8P
0V 25
XGND
S
KOS-A200
11
10
0.7Vp-p
C311
6P
17
OSC1
X3
6.000MHz
C312
6P R339
18
OSC2
6.8K
C310 R304
19
LPF
0.01 C309 100
3.3V
2200P
20
VDD2
21
TEST0
C306 C321 1000P
22
TEST1
11
0.01
23
R370 100
TEST2
24
CP20 15K TEST3
25
OC1
26
OC2
27
OC3
28
OC4
29
CP21
PO1
15K
30
PO2
31
PO3
32
8
PO4
Q17
34
8 35
3.3V
CS1.8V
TP39 TP5
ADCIN Vref
C34
56P
0V
R40
270K
1.7V
IC2
PLL
(16.898MHz)
3.3V
0V
0V
3.3V
3.3V
X14-9790-10/2-71 (4/6)
T
R337
15K
0V
2.2Vp-p
3.3V
1.4V
US
CO
3.3V
3.3V
0V
0V
0
3.3V
R306
27
R307
27
3.3V
1.1
1.2V
0V
1.1Vp-p
75
(X2) RF2-
74
1.7V (X1) RF-
0V
73
(X2) EQ1
0.8Vp-p
72
(X1) EQ2
71
1.7Vp-p
RFI
70
3.3V ADVDD
69
ASY
68
EFM
67
ADGND
66
TEST0
65
TEST1
64
TEST2
63
TEST3
62
TEST4
61
TESTEN
60
DGND4
59
MD-
58
MD+
57
SD-
56
SD+
55
TD-
54
TD+
53
FD-
0V
52
FD+
51
DVDD4
3
17