Kenwood KDC-1022 Service Manual page 17

P
QQ
3 7 63 1515 0
28
∗
0K
24
R
C252
0.22u50
W161
C253
0.22u50
C585
0.01
TE
L 13942296513
C580
0.01
AM 3.3V
FM 2.0V
0V
FM 4.2V
AM 3.2V
AM 3.3V
FM 2.0V
0V
0V
AM 2.4V
N+
0V
N-
AM 4.1V
PW-ON 3.2V
TC
0V
OUT
AM 3.4V
VOUT
0V
N1
FM 2.0V
N2
0V
OUT
OUT
AM 4.2V
PW-ON 2.8V
J
0V
2.4V
0.8V
www
R545
4.3K
.
C550
0.033
Q
∗
Q251
47K
10K
IC4
∗
W407
∗
R252
4.7K
∗
W408
∗
R253
4.7K
CF54
450kHz
L509
8.0V
AM 1.4V
FM 2.0V FM 1.2V
0V 0V
AM 3.7V
0V
FM 5.0V
0V
FM 2.6V
0V
IC10
TUNER &
E-VOL.
3.4V 4.8V
0V 3.4V
8.0V
C556
X501 1000P
C552
C562
10.250MHz 0.01
x ao
10u10
y
C593
+
1
i
C560
100P
R
8
TH1
470
D252
∗
POWER
F
AMPLIFIRE
Q Q
3 6 7 1 3
Q252,253
SMETERRC &
MPTHTC SW
4.4V
60
TUNER 5V
MPTHTC
CHANGE 0V
59
RDSMUTE
58
AUDIOMUTE
57
QUALITY
W519
56
SMETER
FM 4.0V
55 W517
0V
SD
5V
R567
0V
1K
54
SCL
5V
0V
R566
1K
53
SDA
R565 100K
AM 3.0V C563
PW-ON 1.9V 0.47u50
52
FMMUTETC
0V
+
51 3.9V
TUNEROUT
C564
0.47
50
3.0V TUNERIN
49 3.0V
IN1L
C565
47u10
48
3.0V IN1COM
+
47 3.0V
IN1R
46
IN2R
45
IN2COM
44
IN2L
43 3.0V
ACLOUT
3.0V
42
ACLIN
41 3.0V
ACROUT
W501
3.0V
u163
.
S
KDC-1022/122P
2 9 9 4 2 8
E2P-ROM
IC12
VCC
W158
1 WP
A0
2
A1
3
∗
SCL
A2
R258
0V 4
GND
SDA
5.0V
IC8
MUTE
LOGIC
0V
R123
1 5 0 5 8 2 9 9 4
1K
5.0V
IC11
59
55
64
SCL
66
SDA
C568
820P
C205
2.2u50
49
+
C204 R133 12K
2.2u50
47
+
1500P
m
co
X25-9600-1x (2/3)
T
9 9
8 5.0V
7 0V
ACL
5V
6
0V
SCL
ADA
5V
5
0V
SDA
0V
0V
0V
0V
L101
4.7uH
2 8 9 9
CP3
0V 1Kx2
POWER
ON
RESET
5.0V
0V
0V
R127
2.2K
61
REMO
62
R-CLK
63
CH-REQC
R129 2.2K 5.0V
64
CD-SW1
0V
65
KEY-REQ
R130 2.2K 5.0V
66
CD-SW2
0V
0V
67
Vss0
5.0V 68
VDD1
C104 R131 69
X2
15P 6.8K
X1
C105 4.194MHz
15P
70
X1
0V 71
IC
72
XT2
5.0V 73
XT1
74
VDD0
5.0V
75
R132
AVREF0
0V
2.2K
76
S-METER
0-4.0V
C106
77
NOISE
78
PHONE
79
5.0V
N.C
80
0V
AVCONT
17