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Kenwood KRF-V4550D Service Manual page 12

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CAUTION: For continued safety,
DSP/DIR CD OUT
DSP/DIR/CODEC CD IN
replace safety critical components
DSP/DIR/CODEC CCLK
only with manufacturer's recom-
1
mended parts (refer to parts list).
DIR/CODEC CS
indicates safety critical components.
For continued protection against risk
X08-A/3
of fire, replace only with same type
-CN2
and rating fuse(s). To reduce the risk
3/4
of electric shock, leakage-current or
resistance measurements shall be
F
carried out (exposed parts are
acceptably insulated from the supply
circuit) before the appliance is
returned to the customer.
2
The DC voltage is an actual reading
measured with a high impedance
type voltmeter with no signal input.
The measurement value may vary
depending on the measuring instru-
ments used or on the product.
3
PRE OUT MUTE
X07-A/3
-CN7
2/4
E
4
S. LEVEL/CH. SPACE
5
6
to TRANS
7
2/4
B
BA
BB
(X14-7122-73) (A/6)
CN2
1
40
2
39
C58
3
41
47P
4
44
DSP CS
5
42
DSP PD
6
43
DSP INTREQ
7
32
ABOOT
8
DIR/CODEC PD
9
45
91
DIR ERR
10
35
CP501
DZF
11
36
100Kx5
DDET
12
33
VOL. ST
13
31
SEL/VOL DT
14
4
SEL ST1
15
3
50
SEL/VOL CLK
16
5
49
SEL ST2
17
6
C37
48
PROTECT
18
47P
47
S. DATA
19
1
S. BUSY
20
2
D. GND
21
R164 220
45
R165 220
CN1
44
R166 220
GND(X08)
1
43
X08 +B
2
+B
R167 220
42
PLOT.
3
20
R168 220
41
PLOT. 2
4
21
R114
R169 220
TH SENS.
5
19
PACK CONT.
6
75
100K
40
LIMITER
7
76
R170 220
REAR RE.
8
77
39
CENTER RE.
9
78
R142 100K
F. B RE.
10
79
38
F. A RE.
11
80
12
88
37
R141 100K
20dB ATT
13
89
A. MUTE
14
90
36
F. OFF2
15
35
33
H. P L
16
H. P R
17
CP3
100Kx4
C47
SEL ST1
18
3
100P
32
SEL ST2
19
6
SEL./PLL CLK
20
5
31
C43
SEL./PLL DATA
21
4
C9
100P
PLL DO
22
23
47P
23
22
PLL CE
24
7
T. MUTE
25
DET OUT
26
C55
CP2
100Kx4
47P
STEREO
27
98
SD
28
99
POWER RE.
29
F. OFF
30
Q14
-29.7V
D33
-30V
31
30V
5.4V
32
+5.4V
5.4V
D.GND
33
REMOTE
SENSOR
A1
47u6.3
+B
30V
5.4V
+5.4V
BC
BD
30V
CP502
100Kx3
50
4G
49
3G
48
2G
47
1G
R131
46
NO USE
100K
45
DIR/CODEC PD
44
DIR/CODEC CS
43
DSP PD
42
DSP CS
41
DSP/DIR/CODEC CCLK
40
DSP/DIR/CDOUT
39
DSP/DIR CODEC CD IN
38
RDS.DAT/CE2
37
RDS. CLK
R88 100
36
DZF
R87 100
35
DIR ERR
34
REMOCON
R85
33
DTS DET
100
R84
32
DSP INTREQ
100
31
VOL. ST
R79
10K
30
RF CLK
29
RF DT
28
RF ST
27
T. MUTE
26
RESET
CP1
100Kx5
R65
10K
C17
0.01
C23
R66
10K
+
C18
0.01
+B
5.0V
BE
BF
30V
LIMITER
REAR RE.
CENTER RE.
FB. RE
FA RE.
POWER RE.
CS5.1(DOWN MIX)LED
3 STEREO LED
DTS LED
DOLBY DIGITAL LED
PROLOGIC LED
STANDBY LED
PRE OUT MUTE
20dB ATT
A. MUTE
ABOOT
IC1
(BOTTOM VIEW)
MULTI. ENC CW
u-COM
MULTI. ENC CCW
SEL. ENC CW
SEL. ENC CCW
VOL. ENC CW
VOL. ENC CCW
STEREO
SD
VPP
(-30V)
X1
8MHz
4.7V
+B
+B
+B
30V
+5.4V
BG
BH
30V
75
76
R98 100K
76
77
C36 47P
77
78
78
C57 220P
79
79
80
80
81
81
R69 10K
82
82
83
83
R70 10K
84
84
85
85
86
86
87
87
88
R53
88
2.7K
89
89
R52
90
2.7K
90
R50
R56
100
2.7K
91
91
S17
R45
92
100
R42
10K
S18
R44
93
100
R43
10K
S2
R129 100K
C11 0.01
R46
94
100
R128 100K
INPUT
SELECTOR
C12 0.01
R47
R41
95
100
10K
R36 100K
C16 0.01
96
R48
96
100
R37 100K
C15 0.01
R49
100
97
97
R143 100
98
Q13
R64 100
99
Q12
-29.2V
100
30V
99
C61
100P
C54
C32
4.7u50
22u6.3
+
+
C38
33u50
+
+B
+B
+B
30V
+5.4V

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