Kenwood RXD-501 Service Manual page 32

CW CX
Q Q
3 7 6 3 1 5 1 5 0
X09-A/7
1
-E16
6/8
K
IC21 PIN VOLTAGE
MODELS
RXD-A5
RXD-501/551
RXD-A8
RXD-701/751
(X09-600X-XX) (C/8) : RXD-A5/RXD-501/RXD-501E/RXD-551E/RXD-501W/RXD-551W/RXD-551/RXD-571S
2
(X09-494X-XX) (C/8) : RXD-A8/RXD-701/RXD-701E/RXD-751E/RXD-701W/RXD-751W/RXD-751/RXD-771S
3
T E
L 1 3 9 4 2 2 9 6 5 1 3
4
STK401-030K
STK407-710K
5
CN24
WH9
MUTE 1
ATT 2
S.W. IN 3
Lch IN 4
X09-A/7
A GND 5
-E6
6/8
6
Rch IN 6
H
w w w
CURRENT
7 7
PROTECTION
DC
8 8
PROTECTION
FAN
9 9
CONTROL
SP.RLY 10 10
H.P. 11 11
HP RELAY 12 12
7
CY CZ
1 2 3 4 5 6 7 8 9-11 12-15 16 17
54.3V 0V 54.3V 0V 0V 0V 0V -54.8V -54.8V 0V -53.0V 53.0V
64.3V 0V 29.6V 29.8V 22.4V -22.8V -30.8V -64.3V -30.6V 0V -60.7V 60.5V
POWER IC
IC21
0V 0V 0V 0V
C511
10P
R545
56K
W27
R541
470
0V 0.8V
R501 R507
3.3K 2.2K C501
+
R509
R505 2.2K
2.2K
Q501
Q505
506
2.2K R510
Q502 2.2K
Q506
R502 R508
3.3K 2.2K C502
+
R513 R519 C505
3.3K 2.2K 2.2u50
+
R521
2.2K
R515
2.2K
Q503 Q507
x a o
Q501-503 Q505-507
ATT MUTE
. i
DA DB
18,19 20 21,22 23,24 25 26 MODELS A B C D
RXD-A5
0V -51.8V 0V N/C N/C N/C 26.0V -27.0V 55.0V -55.0V
RXD-501/551
RXD-A8
0V -59.4V 0V 0V -30.6V 0V 29.8V -30.4V 64.3V -64.3V
RXD-701/751
Q Q
3 7
0V
W201
Q24 W47
A
C537 C538
D510 D509
10u100 10u100
+B
R554
+ +
10K
-B
R567
3.9K
C535 C536 Q504
10u100 10u100
+ +
+B
R531
0.1 2W
W104
R532
R542 0.1 2W
470
R551
0.1 2W
R535 R536 R555
4.7K 4.7K 4.7K
C513 C514 C515
4700P 4700P 4700P
0V 0V 0V
Q509 Q510
Q511
u 1 6 3
y
C80
0.01
12.1V
DC DD
2 4
8 9 9
(X09- )(B/7) CN5 TERMINAL VOLTAGE
MODELS 1 2 3 4 5 6 7 8 9 10 11 12 13
RXD-A5
-27.0V 24.3V 26.0V 12.2V 10.5V 12.4V 0V -54.0V 0V AC5.0V 0V
RXD-501/551
RXD-A8
-30.4V 28.0V 29.8V 11.9V 11.8V 13.7V 0V -63.2V 0V AC5.4V 0V
RXD-701/751
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
E11
Q17
25.2V
R187
R51 R52 R587 R588 3.3
100K 100K 10K 10K 2W
+B
R188
3.3
2W
100 2W
+B
H.P.
RELAY
0V
6 3 1 5 1 5 0 8 9
A
B Q514
+B
+B +B
-B
D
-B C
+B
R558 18K
L3
R583
4.7 1/4W
25.0V
L4
R584
4.7 1/4W
L5
R585
R561
m
10K
0.7V
R571
4.7K
c o
C79
1000P
.
DE DF
2
8 9 9
WH7
E10
1
2
3
4
5
R598
11.9V
CN6
4
H.P Lch
3 H.P Rch
K13
2 GND
1 H.P DET
2 4 9 8 2 9 9
0.8V
12 J4
SUPER WOOFER
PRE OUT
+B J2
+
1 Lch
-
FRONT
SPEAKERS
(6-16 Ω )
-
2 Rch
+
FRONT
S.P.
J2
RELAY
+
+B
1 Lch
K11
-
FRONT
SPEAKERS
(6-16 Ω )
-
2 Rch
+
S.W.
SPEAKER
+
RELAY
R578
100 2W
3 Lch
+B
-
K12 SUB WOOFER
SPEAKERS
(12-16 Ω )
0V -
4 Rch
+
Q512
E14 WH10
1
2
3
4
5
6