Panel (CD)
(A29-1046-02)
Knob
(K29-7544-04)
Knob
(K29-7543-04)
Front glass
(B10-)
Front glass
(B10-3449-02)
Front glass
(B10-3471-03)
Knob
(K29-7541-02)
Knob
(K29-7541-02)
Knob
(K29-7545-04)
Panel *
(A60-)
Front glass
(B10-3448-02)
Cassette lid (R)
(A53-2122-02)
Cassette lid (L)
(A53-2121-02)
Phone jack
(E11-0280-05)
Knob
(K29-7553-01)
MINI HiFi COMPONENT SYSTEM
RXD-402/402E/402W/452/452E/452W/502/502E/
RXD-502W/552/552E/552W/572S/A41/A51
(XD-402~A51) **
SERVICE MANUAL
© 1999-1/B51-5500-00 (K/K) 3590
Illustration is RXD-402.
* Refer to parts list on page 48~.
In compliance with Federal Regulations, following are reproduc-
tions of labels on, or inside the product relating to laser product
safety.
**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
RXD-402(E)INT1P 99.6.97:25PM y[W 2
SYSTEM
MAIN UNIT SPEAKER
DESTINATION
SYSTEM MAIN UNIT SPEAKER DESTINATION
XD-402
RXD-402
LS-N402
KPET
XD-502
RXD-502
LS-N502
KPE
XD-402E
RXD-402E
LS-N402
E1
XD-502E
RXD-502E
LS-N502
E1
XD-402W RXD-402W
LS-N402
Q
XD-502W RXD-502W
LS-N502
Q
XD-452
RXD-452
LS-N452
MXYTE
XD-552
RXD-552
LS-N552
MXYTE
XD-452E
RXD-452E
LS-N452
E1
XD-552E
RXD-552E
LS-N552
E1
XD-452W RXD-452W
LS-N452
Q
XD-552W RXD-552W
LS-N552
Q
XD-572S
RXD-572S
LS-N552
M1
XD-A41
RXD-A41
LS-N452
KP
XD-A51
RXD-A51
LS-N552
KP
VOLUME
CD
TAPE
MUTE
RC-552
REMOTE
CONTROL
UNIT
EX.BASS
TIME
INPUT
BAND
POWER
TAPE
A/B
RANDOM
REPEAT
TEXT
DISP.
TUNING
6
1
2
3
4
5
6
7
8
9
0
+10
3
2¡
1
4
7
M
U
L
T
I
C
O
N
T
R
O
L
¢
DISC
SKIP
SOUND
CONTROL
MENU
BACK
SELECT
ENTER
VOLUME
CD
TAPE
MUTE
MENU
RC-552E
REMOTE
CONTROL
UNIT
EX.BASS
TIME
INPUT
BAND
PTY
TA/NEWS
RDS
DISP.
POWER
BACK
TAPE
A/B
RANDOM
REPEAT
TEXT
DISP.
TUNING
6
SET
ENTER
1
2
3
4
5
6
7
8
9
0
+10
3
2¡
1
4
7
M
U
L
T
I
C
O
N
T
R
O
L
¢
DISC
SKIP
SOUND
CONTROL
FM indoor antenna (1)
AM loop antenna (1)
Speaker cords (2)
Remote control
(A70-1262-05): TEQE1...RC-552E
(A70-1253-05): KPMXYM1...RC-552
unit (1)
Remote control unit (1)
Use to adapt the plug on the power cord to
the shape of the wall outlet.
(Accessory only for regions where use is
necesary.)
AC plug adaptor (1)
Provided in the speaker package
Batteries
(T90-0836-05)
(T90-0837-05)
(E30-5535-05)
(E03-0115-05)
(R6/AA) (2)
RXD-402/452/502/552/572S/A41/A51
2
CONTENTS / ACCESSORIES / CAUTIONS
CONTENTS/ACCESSORIES/CAUTIONS ...................2
EXTERNAL VIEW/DISASSEMBLY FOR REPAIR.......3
BLOCK DIAGRAM .......................................................4
CIRCUIT DESCRIPTION .............................................5
ADJUSTMENT .......................................................... 10
WIRING DIAGRAM ....................................................14
PC BOARD ................................................................15
SCHEMATIC DIAGRAM ............................................23
EXPLODED VIEW .....................................................44
PARTS LIST...............................................................48
SPECIFICATIONS .....................................................59
Contents
Accessories
System configuration
Unplug the power cord from the power outlet
then, while holding the ENTER key depressed,
plug the power cord again.
÷ Please note that resetting the microcomputer clears
the contents stored in and returns and to condition
when it left the factory.
Operation to reset
The microcomputer may fall into malfunction (impos-
sibility to operate, erroneous display, etc.) when the
power cord is unplugged while power is ON or due to
an external factor. In this case, execute the following
procedure to reset the microcomputer and return it to
normal condition.
ENTER
(Main unit only)
Cautions
RXD-402(E)INT1P 99.6.97:25PM y[W 3
RXD-402/452/502/552/572S/A41/A51
3
EXTERNAL VIEW / DISASSEMBLY FOR REPAIR
EXTERNAL VIEW
DISASSEMBLY FOR REPAIR
BOTTOM SIDE
FRONT
HOW to open the tray if not comes out.
(1) Turn the friction arm counterclockwise
using a screw driver and the like.
(2) Pull out the tray front wards by hand
when the tray comes just out.
Cover
(F07-1655-02)
Slide switch
(S62-0077-05)
Lock terminal board
(E70-0053-05)
Lock terminal board
(E70-0053-05)
Metallic cabinet
(A01-3681-01)
Phono jack
(E63-0116-05)
Lock terminal board
(E20-0321-05)
Phono jack
(E63-1037-05)
Oscillating module
(W02-1114-05)
Illustration is RXD-402.
RXD-402(E)INT1P 99.6.97:25PM y[W 6
A PB
B R/P
B ERASE
BIAS
OSC
CTRL
BIAS
VR5
HA12219NT
IC1
HA12136A
IC2
MPX
DPSS
IC4
HD74HC166P
FL DISPLAY
ED1
M66004SP
IC51
DRIVER
REMOCON
A1
D52
TIMER
D51
STANDBY
KEY
MATRIX
ENHANCED IC
FOR LED
IC52,53
JOG A
JOG B
VOL.
BU2090
+12V
AVR
Q4
AVR
Q6,7
-12V
-12V
+12V
AVR
IC2
+5V
AVR
IC1
+9V
RDS
CD +9V
-B
GND
+B
+40V
AVR
Q8
(X14- ) +5V
FL -35V
Q2
+5.6V AVR
u-COM
FAST OFF
FL AC
AMP
for
POWER
AC IN
RF AMP
CXA1571M
IC5
E-VOL
TUNER
DECK
TUNER
E-VOL
FL IC +5V
u-COM
PULL UP
DRIVER
TRACKING COIL
4ch BTL DRIVER
BA5979S
DRIVER
FOCUS COIL
DRIVER
FEED MOTOR
DRIVER
DISC MOTOR
IC6
A
B
C
E
F
SW
LD
Q501
DSP.SERVO.
CXD2587Q
IC7
DAC
CD +5V
CD +9V
(DSP,RF)
Q505
FM
DM
TA8409S
(ROTARY TRAY)
TA8409S
(LOADING)
LM
RM
IC8
IC9
M30622MA-173FP
u-COM IC
IC1
IC2
K1
120V
240V
INPUT
OUTPUT
MD/DVD
MD
REC
J1
SURROUND
3BAND TONE
EX-BASS
M62492FP
SELECTOR,SURROUND,TON,E-VOL
RDS
DEMODULATOR
IC3 (T,E,Q TYPE ONLY)
SAA6579T/R
MODULE
TUNER
ANT.
PHONES
HEAD
POLAR
UNIT
-10dB
ATT
AMUTE
S1
OFF
ON
ON/OFF
MATRIX
K1
RELAY
SPEAKER
ch.
OTHER
OUT
SW
Lch
Rch
SPEAKER
MATRIX
SPEAKER
BCLASS
ACLASS
Q1,2
Q3,4
B
A
REQ EQ
BIAS TRAP
PH A,B
MOTOR A
MOTOR B
MOTOR
SOL A,B
SPEED
TAPE
A/B
MOTOR
SOL A,B
VR7,8
LEVEL
B PB
LEVEL
VR1,2
A PB
PH A,B
B.CANCEL
BIAS
NOR
A-N/C
A/B
B1/2
DOLBY
R/P
DPSS
A,B CrCO2
L REC
R REC
A,B PACK
A,B PLAY
PSIN
CLK
PSLOAD
GRID
SEG
16
35
CLK
CS
DATA
KEY3
KEY2
KEY1
DATA1/2
CLK
15
LED
A JOG
1/2
1/2
B JOG
1/2
ENC
+
+
+
+
+
+
RF.FE.TE
16.93MHZ
LOM+/-
ROM+/-
PHTR
TD/TU
CL/OP
PSW
MAIN
10MHz
SUB
32.768kHz
DATA
CLK
MPX
TAPE REC
CLK
LATch
DATA
MECHA.
DECK
(X28- )
(X14- )
(X00- )
(X14- )
(X04- )
(X13- )
MGC-E9001
CD MECHA.
Q TYPE ONLY
2-71
0-22
X07-3030-21
ONLY
M TYPE ONLY
RXD-402/502
(X07- )
RXD-402/452/502/552/572S/A41/A51
4
BLOCK
DIAGRAM
RXD-402(E)
INT1P
99.6.9
7:25
PM
y[W
7
RXD-402/452/502/552/572S/A41/A51
5
CIRCUIT DESCRIPTION
1. Initialization
1-1 Setting of initial conditions
While pressing the [ENTER] key, put the plug into an AC
power outlet.
1-2 Initializing operation
· A microcomputer is initialized for start when the AC
power is turned on when pressing the [ENTER] key. At
that time, CD mechanism and CASSETTE mechanism
are also initialized.
· During the initial operation,the display shows INITIALIZE
and after that it will be returned to STANDBY condition.
1-3 Initial items and back up data
*BACKED UP DATA
1-4 Mechanism initialization
1-4-1 CD mechanism
· Disc unclamps(traverse down).
· Rotary tray rotates(1/3 rotation).
· If a mechanism error occurs, CD ERR is indicated on the
display.
1-4-2 DECK mechanism
· When initial condition becomes NG for the third time,
decide the error. The error condition is displayed as X
ERR on the display.
1-4-3 Error display
· If both mechanism (CD/DECK) error occur, the display is
indicated as follows. CD & X ERR
2. Destination list of TUNER
ITEMS
*POWER
STANDBY
*VOLUME
14
*BALANCE
CENTER
MUTING
OFF
PROTECTION
OFF
AMP
S. DIRECT
OFF
DISPLAY MODE
AUTO
*AUTO POWER SAVE
OFF
*MD/DVD INPUT LEVEL
-3
*INPUT SEL.
TUNER
*BAND
FM
TUNER *FREQUENCY
LOWEST FREQUENCY
*AUTO/MONO
AUTO
*P.CH
--CH
*CLOCK
0:00 (E/T/Q) 12:00 (OTHERS)
CLOCK *PROG. RECORDING
ON/OFF TIME
0:00 (E/T/Q) 12:00 (OTHERS)
*PROG. TIMER PLAY
ON/OFF TIME 0:00 (E/T/Q)
12:00 (OTHERS)
SLEEP TIMER
OFF
O.T.T.
OFF
*DIRECTION
FORWARD
DECK
*RVS MODE
REVERSE
*A/B
B
KEY
SELECTOR
FL INDICATION
MODE
· All the fluorescent display indicators
and LEDs light on.
[BAND]
TUNER
· STANDBY and TIMER LEDs blink up.
+ AC ON
· The all illminated state is cleared by
pressing any main unit keys or
remocon keys.
[INPUT]
AUX
· AUX TEST
+ AC ON
Destinat-
ion
Tuner
type
BAND
Receiving
frequency range
Channel
space
IF
RF
K,P
K1
FM
87.5MHz~108.0MHz
100kHz +10.7MHz
25kHz
AM
530kHz~1700kHz
10kHz
+450kHz
10kHz
M,V,X,Y
K2
FM
87.5MHz~108.0MHz
100kHz +10.7MHz
25kH
AM
530kHz~1610kHz
10kHz
+450kHz
10kHz
M
K3
FM
87.5MHz~108.0MHz
100kHz +10.7MHz
25kHz
MW
530kHz~1610kHz
10kHz
+450kHz
10kHz
SW
5.9MHz~17.9MHz
5kHz
+450kHz
5kHz
M,V,X,Y
E1
FM
87.5MHz~108.0MHz
50kHz +10.7MHz
25kHz
AM
531kHz~1602kHz
9kHz
+450kHz
9kHz
M
E3
FM
87.5MHz~108.0MHz
50kHz +10.7MHz
25kHz
MW
531kHz~1602kHz
9kHz
+450kHz
9kHz
SW
5.9MHz~17.9MHz
5kHz
+450kHz
5kHz
E
E1
FM
87.5MHz~108.0MHz
50kHz +10.7MHz
25kHz
RDS
AM
531kHz~1602kHz
9kHz
+450kHz
9kHz
T
E2
FM
87.5MHz~108.0MHz
50kHz +10.7MHz
25kHz
RDS
MW
531kHz~1602kHz
9kHz
+450kHz
9kHz
LW
153kHz~279kHz
9kHz
+450kHz
9kHz
QQ
FML
65.0MHz~74.0MHz
10kHz +10.7MHz
5kHz
FMH 87.5MHz~108.0MHz
50kHz +10.7MHz
5kHz
MW
531kHz~1602kHz
9kHz
+450kHz
9kHz
LW
153kHz~279kHz
9kHz
+450kHz
9kHz
AVdd
10
R107
k
½
X13
IC1
91pin
(TYPE)
Destina-
R107
Voltage
tion
[
½]
[V]
K
91k
4.51
M1
39k
3.98
M2
22k
3.44
T
13k
2.83
E
8.2k
2.25
Q
4.7k
1.60
2-1 Discrimination of TUNER destination
3. Test mode
3-1 Test mode of the receiver
3-1-1 Setting of the test mode
While pressing the [INPUT] key or [BAND] key, put the
plug into an AC power outlet.
3-1-2 Canceling of the test mode
Unplug an AC power cord from an AC power outlet.
3-1-3 Condition in test mode
· Power · · · · ON
· EX.BASS · · · OFF
· S.W · · · · · · · OFF
· Selector mode or FL indication
RXD-402(E)INT1P 99.6.97:25PM y[W 10