3
¡
2
1
PLAY
0
PUSH
OPEN
0
PUSH
OPEN
6
¢
7
7
4
DISC SKIP
DISC
1
DISC
2
REV.MODE
DOLBY NR
DISC
3
VOLUME
CONTROL
UP
DOWN
SRS 3D
TIMER
DISPLAY
EX. BASS
MODE
/DEMO
ENTER
AUTO
PHONES
SET
MAX
MIN
SOUND
MULTI
CONTROL
ON/STANDBY
INPUT
MIC
VOL.
1
± MIC ±2
DUBBING
TUNING
BAND
CD PGM
MINI HiFi COMPONENT SYSTEM
REC
/PLAY
A/B
REC/ARM
0
SRS (
)
MINI HiFi COMPONENT SYSTEM
RXD-501/501E/501W/551/551E/551W/571S/A5/
RXD-701/701E/701W/751/751E/751W/771S/A8
SERVICE MANUAL
© 1998-3/B51-5420-00 (K/K) 3661
Cassette lid (L)*
(A53-)
Phono jack
(E11-0169-05)
Phone jack
(E11-0169-05)
Front glass
(B10-2446-13)
Lighting board
(B19-1587-03)
Front glass*
(B10-)
Lighting board
(B19-1589-04)
Lighting board
(B19-1586-04)
Panel assy*
(A60-)
Knob*
(K29-)
Cassette lid (R)*
(A53-)
Front glass
(B10-2447-13)
Panel (CD)*
(A29-)
(XD-501~A8)**
* Refer to parts list on page 58.
In compliance with Federal Regulations, following are reproduc-
tions of labels on, or inside the product relating to laser product
safety.
Refer to RXD-500/700 (B51-5300-00), If you require
TUNER preset frequency in detail.
**Refer to page 2 if you want to know system configuration.
KENWOOD-Crop. certifies this equipment conforms to DHHS
Regulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM
Phone jack
(E11-0280-05)
RXD-501~751(K)COVER( 98.4.2321:42 y[W 2
SYSTEM
MAIN UNIT
SPEAKER
SP CORD
DESTI-
PARTS NO.
NATION
XD-501
RXD-501
LS-501
E30-5474-08
TE
XD-501
RXD-501
LS-501
E30-5475-05
X
XD-501W
RXD-501W
LS-501
E30-5474-08
Q
XD-501E
RXD-501E
LS-501
E30-5474-08
E2
XD-551
RXD-551
LS-551
E30-5475-05
MXY
XD-551
RXD-551
LS-551
E30-5474-08
TE
XD-551W
RXD-551W
LS-551
E30-5474-08
Q
XD-551E
RXD-551E
LS-551
E30-5474-08
E2
XD-571S
RXD-571S
LS-551
E30-5475-05
M2
SYSTEM
MAIN UNIT
SPEAKER
SP CORD
DESTI-
PARTS NO.
NATION
XD-A5
RXD-A5
LS-451
E30-5120-08
KP
XD-701
RXD-701
LS-701
E30-5471-05
TEX
XD-701W
RXD-701W
LS-701
E30-5471-05
Q
XD-701E
RXD-701E
LS-701
E30-5471-05
E2
XD-751
RXD-751
LS-751
E30-5471-05
MXYTE
XD-751W
RXD-751W
LS-751
E30-5471-05
Q
XD-751E
RXD-751E
LS-751
E30-5471-05
E2
XD-771S
RXD-771S
LS-751
E30-5471-05
M2
XD-A8
RXD-A8
LS-751
E30-5471-05
KP
System configuration
RXD-501/551/571/A5/701/751/771/A8
2
CONTENTS / ACCESSORIES
CONTENTS / ACCESSORIES ....................................2
EXTERNAL VIEW ........................................................3
DISASSEMBLY FOR REPAIR .....................................4
BLOCK DIAGRAM .......................................................5
CIRCUIT DESCRIPTION .............................................6
ADJUSTMENT .......................................................... 13
WIRING DIAGRAM ....................................................17
WIRING DIAGRAM ....................................................17
PC BOARD ................................................................19
SCHEMATIC DIAGRAM ............................................27
EXPLODED VIEW .....................................................55
PARTS LIST...............................................................58
SPECIFICATIONS .......................................Back cover
Contents
V
O
L
U
M
E
T
A
P
E
S
E
T
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N
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A
/
B
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IN
G
P
.C
A
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-7
0
1
R
R
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L
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IT
1
2
3
0
4
5
6
+
1
0
7
8
9
D
IS
C
S
K
IP
E
X
.B
A
S
S
S
R
S
3
D
T
IM
E
R
A
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D
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P
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A
T
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D
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Q
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/
O
F
F
IN
P
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S
D
IS
P
.
P
T
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T
A
/
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S
/
IN
F
O
.
P
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L
T
I
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T
R
O
L
V
O
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E
T
A
P
E
S
E
T
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T
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R
A
/
B
C
D
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N
IN
G
P
.C
A
L
L
M
U
T
E
M
E
N
U
R
C
-7
0
1
R
E
M
O
T
E
C
O
N
T
R
O
L
U
N
IT
1
2
3
0
4
5
6
+
1
0
7
8
9
D
IS
C
S
K
IP
E
X
.B
A
S
S
S
R
S
3
D
T
IM
E
R
A
N
D
O
M
R
E
P
E
A
T
B
A
N
D
E
Q
O
N
/
O
F
F
IN
P
U
T
P
O
W
E
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M
U
L
T
I
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T
R
O
L
Accessories
FM Indoor antenna
(T90-0801-05): KPXYMM2
(T90-0836-05): TEQE2
AC plug adaptor (1)
(E03-0115-05)
Use to adapt the plug on the
power cord to the shape of the
wall outlet.
(Accessory only for regions
where use is necessary.)
AM Loop antenna stand
(J19-3645-05)
Speaker cords (4)
XD-A8/XD-7....Series
Speaker cords (2)
XD-A5/XD-5....Series
Remote control unit (1)
(A70-1201-05) :KPMXYM2
Battery cover (A09-0399-08)
Remote control unit (1)
(A70-1202-05) : QETE2
Battery cover (A09-0399-08)
Batteries (R6/AA)
Attached with to
speaker unit
AM Loop antenna (T90-0833-05)
Speaker cushion (8)
RXD-501~751(K)COVER( 98.4.2321:42 y[W 3
RXD-501/551/571/A5/701/751/771/A8
3
EXTERNAL VIEW
GND
L
R
L
R
SUB WOOFER
SPEAKERS
(12-16
)
FRONT
SPEAKERS
(6-16
)
AUX
OUTPUT
ANTENNA
FM
300
AUX
INPUT
AUX
INPUT
LEVEL
MIN.
MAX.
L
R
L
R
R
SURROUND
SURROUND
SPEAKERS
(6-16
)
L
+
+
+
+
+
DIGITAL
OUT
OPTICAL
% ON
fi OFF
FM
75
AM
FRONT
SPEAKERS
(6-16
)
SUPER
WOOFER
PRE OUT
L
R
+
+
L
R
AUX
INPUT
RXD-A5/RXD-5.....Series
RXD-A5/A8
Phono jack
(E63-1037-05)
Phono jack
(E63-1038-05)
Lock terminal board*
(E70-)
Lock terminal board
(E70-0048-05)
Lock terminal board
(E70-0045-05)
Power cord bushing
(J42-0083-05)
Slide switch
(S62-0055-05)
AC power cord*
(E30-)
Variale resistor
(R31-0096-05)
Oscillating module
(W02-1114-05)
Lock terminal board
(E70-0057-05)
Phono jack
(E63-0116-05)
* Refer to parts list on page 58.
RXD-501~751(K)COVER( 98.4.2321:42 y[W 6
RXD-501/551/571/A5/701/751/771/A8
4
DISASSEMBLY FOR REPAIR
1. How to remove the front panel.
(1) Turn the power ON and then push the open/close
key to open the tray.
(2) After removed the tray cover, push the open/close
key to close the tray and then turn the power
OFF.
(3) Remove the push rivet (1) and 4 screws (2, 3).
(4) The front panel can be separated by removing the
3 screws (4) located at the bottom plate of the
front panel.
2. How to remove the CD mechanism
(1) Remove 4 screws (5) on the left side/right side of
chassis.
(2) Remove 2 screws (6) and the cap (7) on the
rear panel.
(3) Disengage the CD mechanism as FIG.2.
3. How to open the tray if not comes out.
(1) From the rear side of the CD mechanism, use a
screw driver or the like to turn the friction arm fully
counterclockwise.
(2) Pull out the tray front wards by hand when the
tray comes just out.
* As for details of items in the below, refer to RXD-F3
service manual (B51-5091-00).
(1) How to detach the tray.
(2) How to attach the tray.
(3) Replacing the pickup.
Fig.1
5
2
3
3
3
1
6
6
7
x4
4 x3
REAR
SIDE
Friction
Arm
Fig.2
RXD-501~751(K)COVER( 98.4.2321:43 y[W 7
-490X
-489X
X05-471X
(X09)
-551 M,X
-571 M
RXD-501 X
A,B
X04-1313-80
Q TYPE ONLY
RXD-501/701
(X32)
(X14)
(X14)
T25-0050
(CDM-27)
MECHA.
(X28)
TRDR
OUT
NC
DECK
K12
LD ON
SRDR
MDP
FFDR
FRDR
DOLBY ON/OFF
DOLBY R/P
A,B
PLAY
R.REC
F.REC
A,B
PACK
A/B
AUDIO OUT
OFF
ON
RF
SFDR
TFDR
SSTP
L,R
LED A,B
SOL-
MOTOR-
MOTOR B
MOTOR A
P.H A,B
VR5,6
DPSS
PS LOAD
PS IN
IC CLK
RM:ON/OFF
BIAS:ON/OFF
B:120/70
A:120/70
BIAS
SW
580mV
0dBS
PB OUT
REC IN
PASS
DCL
REC
PB
REC OUT
70u
120u
B
A
AUX OUT
IN
CD
DECK
K2
K1
+
-
~
~
+
-
~
~
TUNER
AUX
FAN
FROM
OTHER CH
HEAD
FAN DRIVER
Q21-23
SUB
ONLY
RXD-701 SERIES
(M,T,X,E,Q, TYPE)
RXD-701
RXD-501(M,X TYPE)
S.P OUTPUT
17.3V/6
SERIES
RXD-A5/RXD-5XX
SERIES
RXD-A8/RXD-7XX
20.49V/6
24.49V/6
RXD-501
SERIES ONLY
1.8V/3.3K
J2
J2
+B
+
L
-
+
-
R
WOOFER
SP.
RELAY
+B
K11
FRONT S.P
+B
H.P RELAY
MUTE
POWER
AMP
K13
VR1
AUX LEVEL
IC19
X09,IC9
SPEANA
IC2
X1
ST SW, PS SW
LD/UNLD SW, UP/DOWN SW
RMR/BRKM/RMF/LMF/LMR
X09,IC10
M38199MF-075FP
MAIN u-COM
+5V
+5V
TC74HC166AP
POLAR
UNIT
MUTE
Q3,4
Q10,11
IC1 HA12209F
MS
AMP
REC
IC3
IC1
FL DRIVER
u-COM
A1
ED1
SENSOR
REMOTE
FL DISPLAY
IC21
OTHER CH
SURROUND
J4
WOOFER
SUB
PHONES
SURROUND
SP.
+
+
-
-
R
L
SP.
FRONT
R
L
+
-
-
+
IC4
SURROUND
SRS
VOL.
ELECTRIC
ZERO
MUTE
16.9344MHz
DRIVER MUTE
IC2
CXD2587Q
DSP/DAC
IC1
RF AMP/SERVO
CXA1571M
BA5979S
IC4,5 MOTOR
DRIVER
TA8409S
L.M
DRIVER
LOADING
ROTARY
DRIVER
R.M
TRAVERSE UNIT
D40-1500
START
LIMIT SW
FOCUS
TRACKING
IC3
4ch BTL DRIVER
D.M
DRIVER
DISC MOTOR
DRIVER
FEED MOTOR
F.M
COIL
DRIVER
TRACKING COIL
COIL
FOCUS COIL
DRIVER
LD
SW
Q1
LD
F
E
C
B
A
IC5
BA10393
Q3,4
Q1,2
A PB
B R/P
IC6
EXPANDER IC
+5V
OUT
L1
MPX
L.P.F.
CHANNEL
OTHER
DOLBY
Q5
CONTROL
BIAS
VR3,4
BIAS TRAP
IC4
BA3126N
B
PB
LEVEL
VR1,2
IC3
B PB AMP
BEAT CANCEL
Q7,8
LEVEL
VR7,8
A
PB
IC2
A PB AMP
22.2dBS
60mV
OSC
BIAS
B ERASE
AUX OUT
AUX OUT
0.5V/3.3k
AUX IN
AUX IN
400mV/47k
MIC1,2
2.5mV/2.2k
MIC
INPUT
SEL.
IC1
AM:180mV/3.3k
FM:600mV/3.3k
TUNER OUTPUT
BLOCK
TUNER
AC
~
D24
D26
SW
SURROUND
MATRIX
RELAY
S.W. SPEAKER
RELAY
FRONT S.P
TUNER
(IC2)
DSP
DRIVER
(IC4.5)
MOTOR
H.P RELAY
TUNER
ANALOG
MECHA.
DECK
Q19
IC13
AVR
+5V
+9V
BIAS
AVR
FL DRIVER
u-COM
MIAN u-COM
SUB u-COM
IC21
IC
IC15
AVR
POWER
+12V
IC12
AVR
-12V
Q14
AVR
-30V
Q15
AVR
+5.6V
IC21
POWER
IC
D23
D22
D24
D26
D18
D17
VR1
MIXING
IC101
(2/2)
MIC AMP
IC101
(1/2)
RXD-501/551/571/A5/701/751/771/A8
5
BLOCK
DIAGRAM
RXD-501~751(K)
COVER(
98.4.23
21:43
y[W
10