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Kenwood R-A100 Service Manual page 25

Stereo integrated amplifier/tuner
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-29.0V
-18.0V
-29.0V
X3
5MHz
+5V
+5V
+5.6V
+5.6V
+5.6V
+5.6V
(
3
)
R38 220
+5.6V
D21
R84 10K
5.1V
RESET
IC2
C11
D22
4.6V
1u50
R89
IN
OUT
+
1K
GND
RESET
5.1V
IC
-30V
CE
CF
4.9V
+5V
-32.3V
(
S16
)
(
S15
)
(
S14
)
(
S13
)
-23.5V
(
S12
)
(
S11
)
(
S10
)
-31.8V
S9
81
-20.6V
KS7
SEG9
S9
S8
82
-20.6V
KS8
SEG8
S8
83
-20.6V
SEG7
S7
84
-18.1V
SEG6
S6
85
-20.6V
FL
SEG5
S5
86
-29.1V
SEG4
S4
87
-32.0V
SEG3
S3
88
-32.0V
SEG2
S2
89
-21.0V
S1
SEG1
CP4 10Kx11
90
-29.7V
GRID11
G11
91
-29.7V
GRID10
G10
92
-29.7V
GRID9
G9
93
-29.7V
GRID8
G8
-29.7V
94
GRID7
G7
95
-29.7V
FL
GRID6
G6
96
-29.7V
GRID5
G5
97
-29.7V
GRID4
G4
98
-29.7V
GRID3
G3
99
-29.7V
GRID2
G2
100
GRID1
G1
-29.4V
-29.4V
R104
100K
FL
SEGMENT
X
DRIVER
Q7
Q5
X
Q5
CHANNEL
SPACE
X
CONTROLLER
R87
22K
5.5V
+5.6V
+5.6V
R56
1K
Q6
-32.3V
X
R79
CG
CH
(X14- ) (E/11)
CN8
R145
(
10
)
Lch
4
10K
R146
Rch
3
10K
GND
2
R152
IC3
MUTE CONT
1
1K
(BOTTOM VIEW)
INTERRUPT
COMMUNICATION
X
I
u-COM
28
1
5.3V
X
J3
27
4.6V
2
26
3
RWRREQ
60
MIC
25
4
RWR
61
24
5
RTREN
62
23
6
7
8
22
REM
(
63
)
D7
C6 47u6.3
X
21
J2
(
64
D6
)
9
+
20
VDD
+5V
(
65
)
D5
SYSTEM
X1
2.3V
CONTROL
4.332MHz
19
10
(
66
)
D4
18
2.2V
(
67
)
D3
11
17
(
68
)
D2
12
16
VSS
(
69
)
D1
13
C8 1000P
15
(
70
)
D0
4.8V
D10
14
4.8V
X
CN4
3
S.DATA
2
S.BUSY
C
1
D GND
ANODE CONNECTION
11G
10G
9G
8G
7G
6G
RDS
P1
a
a
a
a
a
X
WH3
P2
INFO.
j
j
j
j
j
15
KR1
(
5
)
P3
MEMO
h
h
h
h
h
14
LED R
(
4
)
EON
13
LED G
P4
k
k
k
k
k
(
3
)
12
KR2
NEWS
P5
b
b
b
b
b
(
8
)
FM
P6
f
f
f
f
f
VOICE
11
ON/OFF
(
52
)
AM
P7
g
g
g
g
g
VOICE
10
DEPT
(
56
)
PTY
P8
m
m
m
m
m
9
RDS.CLK
(
36
)
TP
8
RDS.DT
P9
c
c
c
c
c
(
37
)
7
POWER
TA
P10
e
e
e
e
e
6
DET
(
P11
MW
r
r
r
r
r
3
)
5
CE
(
9
)
P12
LW
n
n
n
n
n
4
D GND
P13
TIMER
p
p
p
p
p
3
S.BUSY
(
19
)
P14
1
d
d
d
d
d
2
S.DATA
P15
-
-
-
-
-
2
(
20
)
1
5.6V
P16
-
-
-
-
-
-
ED1
11G
10G
P1
P2
P3
RDS INFO. MEMO
P4
P5
FM
P6
EON NEWS
AM
P8
P9
P10
P7
PTY TP TA
MW
P11
P14
P15
P13
TIMER
1
2
LW
P12
World of free manuals
CI
CJ
X
(X14- ) (B/11)
X
J4
R137
R129
SUB WOOFER
PRE OUT
1K
100
Q10
MUTE CONTROLLER
5.5V
X
WH5
R110
22
5.4V
+5.6V
+5.6V
1
1/4W
3.3V
BUFFER
C32
R119
Q8
1u50
100
C30
2.0V
+
1u50
R111
MIC
2.6V
2
47
D GND
3
S.DATA
4
S.BUSY
5
X
CN5
3
S.DATA
2
S.BUSY
CN6
1
D GND
S.BUSY
5
S.DATA
4
D GND
3
MIC
2
5.6V
1
CN50
5.6V
1
S.DATA
2
S.BUSY
3
5G
4G
3G
2G
1G
D GND
4
dB
a
a
a
a
CE
5
j
j
j
j
ms
h
h
h
h
kHz
MHz
DET
6
k
k
k
k
POWER
7
PRO LOGIC
b
b
b
b
RDS.DT
8
3 STEREO
RDS.CLK
9
f
f
f
f
a
VOICE
10
DEPT
DSP
g
g
g
g
VOICE
11
ON/OFF
EX.BASS
j
m
m
m
m
KR2
12
f
TAPE2
b
c
c
c
c
LED G
13
h
k
S.DIRECT
LED R
14
e
e
e
e
KR1
15
g
r
r
r
r
SRS 3D
m
n
n
n
n
SLEEP
r
n
p
p
p
p
AUTO
e
c
p
d
d
d
d
STEREO
-
col
-
-
TUNED
d
-
Dp
-
-
MUTE
(10G-2G)
9G
8G
7G
6G
5G
CK
27/9/2013
CL
60
C18
0.1
64
P87
R235
63
P86
100K
62
P85
R233
61
P84
100K
60
(LED G)PB3
59
AVSS
58
ADIN
C113 1000P
57
FAO
R228 10K
56
FAI
R221 10K
55
MA2O
C108
22u16
29dB
0V
54
MA2IB
+
Q102
0.6V
53
32dB
MA2IA
R230
52
10K
0.6V
MA1O
51
10dB
MA1ID
R220
Q101
0V
50
16dB
C107
MA1IC
1K
22u16
22dB
49
MA1IB
+
48
28dB
MA1IA
R219
47
MICIN
100
D107
46
NC
45
D104
5.6V
AVDD
R239 100K
44
P82
D106
R240
43
P81
100
R205 100K
42
D105
1/4W
P80
R225
41
RESB
100K
5.5V
D101
C112
10u50
+
18
L101 10uH
4
+5.6V
68
2
R222
16
(
16
)
X101
220
37
4.332MHz
67
2.5V
73
IC52
60
RDS
35
DEMODULATOR
71
4.9V
RESET
C102
1u50
R215
+
1K
Q100
(
2
)
L100 1uH
R208 22K
(
4
)
4G
3G
2G
P5
P1
dB
PRO LOGIC
P6
P2
ms
3 STEREO
Col
P7
P3
kHz
DSP
P4
P8
MHz
EX.BASS
Dp

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