MINI HiFi COMPONENT SYSTEM
RXD-302/302E/352/352E/372S
LS-N302/N352
SERVICE MANUAL
(XD-302/302E/352/352E/372S)**
© 1999-5/B51-5530-00 (K/K) 2299
DISC SKIP
DISC
3
DISC
2
DISC
1
INPUT
BAND
PHONES
EX.BASS
TUNING MODE
MULTI CONTROL
MENU
SELECT
DISPLAY
ENTER
DEMO
ON/STANDBY
TAPE A/B
REC/ARM
VOLUME
APLAY
REC/
PLAY
B
OPEN/CLOSE button
(K29-7646-08)
Front window
(A29-1071-08)
POWER button
(K29-7650-08)
Knob (JOG)
(K29-7658-08)
EX. BASS button assy
(K29-7642-08)
Knob (STOP)
(K29-7654-08)
Cass window L
(B10-3527-08)
Cass door L
(A53-2158-08)
Tuning button assy
(K29-7643-08)
Headphone jack
(E11-0386-08)
PLAY button
(K29-7656-08)
Knob (VOLUME)
(K29-7652-08)
CD door
(A60-1723-08)
PLAY PAUSE button
(K29-7648-08)
DISC button bass assy
(K29-7641-08)
Cass window R
(B10-3528-08)
Cass door R
(A53-2159-08)
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
Illust. is RXD-352M.
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.
Refer to service manual RXD-251/301/301E/301W/351/
351E/351W/371S (B51-5454-00), if you require CD MECH-
ANISM OPERATION DESCRIPTION in detail.
RXD-302(K) COVER1,1( 99.6.18 0:31 PM y[W 2
SYSTEM MAIN UNIT DESTINATION SPEAKER
XD-302
RXD-302
E3
LS-N302
XD-302E RXD-302E
E4
LS-N302
XD-352
RXD-352
TEMXY
LS-N352
XD-352E RXD-352E
E2
LS-N352
XD-372S RXD-372S
M2
LS-N352
AM
(T90-0815-08)
loop antenna (1)
Remote
(A70-1320-08) : RC-352
control unit (1)
Batteries (R6/AA) (2)
FM indoor antenna (1)
Europe and U.K.
Other countries
AC
(E03-0115-05)
plug adaptor (1)
Use to adapt the plug on the power cord
to the shape of the wall outlet.
(Accessory only for regions where use is
necessary.)
(T90-0847-08): MXYM2
(T90-0836-05): TEE2E3E4
RXD-302/302E/352/352E/372S
2
CONTENTS / ACCESSORIES / CAUTIONS
CONTENTS / ACCESSORIES / CAUTIONS ...............2
EXTERNAL VIEW ........................................................3
BLOCK DIAGRAM .......................................................4
CIRCUIT DESCRIPTION .............................................5
ADJUSTMENT ............................................................ 7
PC BOARD ................................................................11
SCHEMATIC DIAGRAM ............................................15
EXPLODED VIEW .....................................................29
PARTS LIST...............................................................32
SPECIFICATIONS .......................................Back cover
Contents
Accessories
Operation to reset
The microcomputer may fall into malfunction (impossibility to oper-
ate, 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.
Press the "POWER" key while holding the Stop (
7) key of
the CD section pressed, to switch off the power, and then
switch the power on again after a few seconds.
÷ Please note that resetting the microcomputer clears the contents
stored in and returns and to condition when it left the factory.
System configuration
Cautions
RXD-302(K) COVER1,1( 99.6.18 0:31 PM y[W 3
RXD-302/302E/352/352E/372S
3
EXTERNAL VIEW
Slide switch
(S62-0083-08)
AC power cord
(E30-2906-08)
Top cabinet
(A01-3725-08)
Phono jack
(E63-1073-08)
Lock terminal board
(E70-0108-08)
Antenna terminal
(E70-0070-08)
Illust. is RXD-352M.
RXD-302(K) COVER1,1( 99.6.18 0:31 PM y[W 6
RXD-302/302E/352/352E/372S
4
BLOCK
DIAGRAM
24
23
13
+
+
100K
17
18
28
19
20
21
2
15
16
26
25
23
24
12
11
13
14
10
9
8
7
22
4
3
5
29
1
30
6
100K
100K
100K
100K
100K
100K
100K
G
G
2
1
2
5
9
11
20
19
16
14
+
27
CD
TUNER
TAPE
A/B
PLAY
AMP.
ALC
PLAY
R/P
OSC
BIAS
(Q213,L201)
Q205
Q203 Q204
Q206
Q201
Q202
TAPE OUT
Q403,404
REC BUFFER
TAPE OUT
REC. OUT
REC IN
DECK A/B SW.
B+
PRE. SET EQ
PRE-AMP
IC402
RL501
Q408,
409
MUTE
SYSTEM
POWER
IC501
+Vcc
-Vcc
Q501-503
DETECTOR
u-COM
SPEAKER
PROTECTOR
+12V
506
Q505,
MUTE
JACK
SPEAKER
HEADPHONES
+5.5V
Q706
Q707
Q705
+Vcc
(SWITCHED)
to
X'FORMER
-35V
Q708
+12V
-Vcc
CN702
D709
D710
Q702
FLD DISPLAY
IC601
u-COM
KEY
MATRIX
CN05-
to CD PCB
to MAIN PCB
RF
AMP
FILTER
RC
TUNE
AMP
MIX
IFT
CF1
BUFF
OSC
TUNE
AMP
IF
CF2
TUNE
AM RF
AMP
RF
Q106
FM SECTION
Q101
PLL
u-COM
IC201
L.P.F
AM SECTION
V.T.
AM ANT
GND
FM ANT
OUT
MIX
BUFF
AMP
TUNE
AMP
AM RF
TUNE
OSC
ANT
RF
PLL
L.P.F
AMP
RF
IC201
u-COM
AMP
Q106
IFT
CF1
IF
FILTER
AM SECTION
FM SECTION
CF2
OUT
RC
IC102
IC102
TUNE
FM RF
FM
OSC
Q102
IC01 CXA1992BR
RF SIGNAL PROCESSING/SERVO AMP
PROCESSOR W/DAC
DIGITAL SIGNAL
CD POWER DRIVER
IC03 BA5936S
IC02 CXD2589Q
XTL01
33.86MHz
M
MOTOR
DISC
MOTOR
FEED
M
TRACKING
FOCUS
TRAY MOTOR
T/T MOTOR
SW.
LIMIT IN
OUTPUT
AUDIO
CONTROL SW.
S01-04
Rch
Lch
u-COM
AUX
BASS
MIDDLE
TREBLE
VOLUME
SPKR ATT
LEFT
PRE. SET EQ
VOLUME
MIDDLE
TREBLE
BASS
SUPPLY
SPKR ATT
LEFT
I CBUS DECODER+ LATCHES
INPUT MULTIPLEXER
+GAIN
VREF
0/30 dB
2dB STEP
Lch
Rch
R/P SWITCHING
Lch
Rch
REC.
AMP.
-Vcc 12V
+Vcc 12V
JK601
AMP.
PRE. AMP.
IC602
SUB WOOFER
B +12V
FRONT PCB
to
MOTOR SOL.
7.2MHZ
7.2MHZ
V.T
IFT
AM
IC201
FM FRONT-END
FM RF IC101
TUNER PCB UNIT
CD MECHA. UNIT
TUNER PCB UNIT
MAIN PCB/FRONT PCB
IC401
RXD-302(K)
COVER1,1(
99.6.18
0:31
PM
y[W
7
RXD-302/302E/352/352E/372S
5
CIRCUIT DESCRIPTION
CD MECHA
(9140-C1)
DECK MECHA
IC01
IC601
IC201
RF AMP/SERVO
(CXA1992BR)
DECK PLAY/REC EQ IC
(TA8189N)
IC02
IC102
MAIN U-COM
DSP
(CXD2589Q)
FM/AM/MPX IC
(LC1833L)
LC867240A-5L36
IC03
IC103
BTL DRIVER
(BA5936S)
PLL IC
(LC72131D)
IC801
IC401
FL CONTROLLER
(M66004SPA)
AUDIO CONTROL IC
(TDA7439)
0
0.29
0.61
0.99
1.38
1.82
2.3
2.77
2.77
<
1. Main microprocessor LC867240A-5L36(IC601)
1-1 Microprocessor periphery block diagram
1-2 VOLTAGE KEY/BAND MATRIX
RXD-302(K) COVER1,1( 99.6.18 0:31 PM y[W 10