Kenwood RXD 302 Service Manual

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MINI HiFi COMPONENT SYSTEM

RXD-302/302E/352/352E/3723
LS-N302/N352

SERVICE MANUAL
(XD-302/302E/352/352E/3728)**

KENWOOD

© 19995/851-5530-00 (K/K) 2299

OPEN/CLOSE button #0: 3

(K29-7646-08)

From window
(A29-1071-08)

POWER button
(K29-7650-08)

Knob (JOG)

DISC button bass assy
(K29-7641-08)

PLAY PAUSE button
(K29-7648-08)

KENWOOD

( user) mew
/ >

VOLUME

l<< 4 MULTI CONTROL p >>I

(K29-7658-08)

EX. BASS button assy
(K29-7642-08)

Knob (STOP)
(K29-7654-08)

Cass window L
(810-3527-08)

Cass door L
(A53-2158-08)

I

l 1 ,7 7 '0I

/nI

"Refer to page 2 if you want to know system configuration.

CD door
(A60-1723-08)

Knob (VOLUME)
(K29-7652-08)

Headphone jack
(E11-O386-08)

Tuning button assy
(K29-7643-08)

PLAY button
(K29-7656-08)

Cass window R
(810-3528-08)

Cass door R
(A53-2159-08)

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 service manual RXD-251/301/301E/301W/351/

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

351 E/351W/37IS (851-5454-00), if you require CD MECH-

ANISM OPERATION DESCRIPTION in detail.

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RXD-302/302E/352/352E/372S

CONTENTS / ACCESSORIES / CAUTIONS

Contents
CONTENTS / ACCESSORIES / CAUTIONS....
EXTERNAL VIEW ......
BLOCK DIAGRAM .....
CIRCUIT DESCRIPTION.

PC BOARD ......................
SCHEMATIC DIAGRAM ..
EXPLODED VIEW ...........
PARTS LIST ..............

ADJUSTMENT ................. SPECIFICATIONS
Accessories
r 7777777 FM indoor antenna (1) 77777777777777777 . Batteries (RB/AA) (2) AM loop antenna (1)
Europe and U.K. Other countries IT90'0815'08)

.
.
(T90-0836-05): TEE2E3E4 (T90-0847- 08) MXYM2 I .
a E , : W
- , . , ,. e: I
_ ~ _ I
I
.

Flemote control unit (1 )

(A70-1320-08) : FIG-352 AC plug adaptor (1)
(E03-0115-05)
Ea am A g 41 I
A E0 0:: I0a0u0 ::0<00> g w»
x 2 I | .I gm E 0Q; I
. 3 A - d E . 1
I $0 9; :K/ m:O§ £03 3 O V 0 ESE I Use to adapt the plug on the power cord
é . E ' 3 ¥ I; ,I to the shape 01 the wall outlet.
E0 30; «1 ago I I 50 E (Accessory only for regions where use is
necessary.)
\ A
System configuration Cautions
SYSTEM MAIN UNIT DESTINATION SPEAKER Operation to reset
X0302 RXD-302 E3 LS.N302 The microcomputer may fall into mallunction (impossibility to oper-
XD'302E RXD302E E4 LSN302 ate, erroneous display, etc.) when the power cord is unplugged
XD-352 FIXD-352 TEMXY LS-N352 while power is ON or due to an external factor. In this case, execute
XD-352E FIXD-352E E2 LS-N352 the following procedure to reset the microcomputer and return it to
normal condition.
XD-37ZS FIXD-37ZS M2 LS-N352

Press the POWER" key while holding the Stop (I) key of
the CD section pressed, to switch off the power, and then
switch the power on again after a few seconds:

0 Please note that resetting the microcomputer clears the contents
stored in and returns and to condition when it left the factory.

Page 6

L)

1-3 Pin description

Pin No. Name l/O Descriplian Active Pin No. Name In) Description Aciive
1 PLL-CE O CE OUTPUT (LC72131) H: DATA L: ADDRESS 61 REC»REV-SW I REC REV SWITCH L: HOOK EXSIT
2 XRST I RESET (CXD258QO) L: ON 62 A-PH I A DECK REEL SENSOR
3 PLL-DO 0 DATA OUTPUT (LC72131) 63 B-PH I B DECK REEL SENSOR
A PLL-DI I PLL DATA INPUT (LC72131) 64 DECK VCC O DECK MECHA VCC H: PLAY L: STOP
5 PLL-CLK O CLK OUTPUT (LC72131) 65 A SOL O A DECK SOLENOID CONTROL H. ON L: OFF
6 SO 0 DATA OUTPUT (CXDZSBBO) 66 B SOL. O B DECK SOLENOID CONTROL H: ON L: OFF
7 SOSO I SUB CODE INPUT(CXD25890) 67 DUBBING O DUBBING CONTROL H: DUBBING L: NORMAL
8 SOCK O SUB CODE CLOCK OUTPUT (CXD25890) 68 REC O REC CONTROL H. REC L: OTHER
9 XLAT O LATCH OUTPUT (CXDZSESO) 69 REC-MUTE O REC MUTE H: OTHER L: REC
1D - - NOT USED 70 BIAS O BIAS ON/OFF CHANGEOVER CONTROL H: REC L: OTHER
11 SENS1 I SENS1(CXD258QQ) 71 NB O A/B DECK MECHA CHANGEOVER H. A DECK L: B DECK
12 RESET I uCOM RESET H: NORMAL L: RESET 72 BEET CANCEL O REC BEET CANCEL H: ON L: OFF
13 POWER DOWN I POWER DOWN INPUT L: POWER DOWN 73 TAPE-MUTE O DECK PLAY OUTPUT MUTE H: ON L: OFF
14 SENS2 I SENS2(CX025890) 74-78 - - NOT USED
15 VSS - GND 79 SP-RLY SPEAKER RELAY ON/OFF H: ON L: OFF
16,17 X12 - XIaI 6.0MHZ 80 - - NOT USED
18 VDD1 - +5V 81 MODE-SW4 I MODE SWITCH 4 SHORT WAVE H: EXSIT L: NONE
19-21 KEY1»3 I KEY 1-3 INPUT 82 VSS - GND
22 VSS - GND 83:84 ENC A,B I JOG ENCODER(MULTI CONTROL) A,B L: ON
23 L-METER L I LEVEL METER L,R 85 FOK I FOCUS OK OUTPUT (CXD25890) H: ON
24 - I NOT USED 86 STEREO I FM STEREO IN H: MONO L: STEREO
25 MODE-SW I DECK MODE SWITCH 87 SDA I/O AUDIO CONTROL IC (TDA7439) DATA
26 BAND I BAND SWITCH 88 SCL O AUDIO CONTROL IC (TDA7439)CLOCK
27 SCOR I SUB-CODE SYNCH DETECT (CXD2589Q) 89 VSS2 GND
28 PROTEC I PROTECTION IN H: PROTECT 90 VDD2 - +5V
29 REMOTE I REMOTE SIGNAL INPUT L: ON 91 - - NOT USED
30,31 ENC A,B I VOLUME ENCODER INPUTA B 92 MUTE O SYSTEM MUTE H: OFF L: ON
32 PIC-UP I PICK UP UP SWITCH 93 TUNER-MUTE O TUNER MUTE H.ON L: OFF
33 PIC-DOWN I PICK UP DOWN SWITCH 94 AUDIO-MUTE O LINE (AUDIO) MUTE H: ON L: OFF
34 DISC-COUNT I DISC COUNTER SWITCH 95 EX. BASS 0 Ex BASS CONTROL H. ON L: OFF
35 TLT»SW I TURNTABLE SWITCH 96 - - NOT USED
36 TRAY-OPEN I TRAY OPEN SWITCH 97 FL-CS O FL CONTROLLER (MESOOADP) CS L: ON
37 TRAY-CLOSE I TRAY CLOSE SWITCH 98 FL-RESET I FL CONTROLLER (MBGOOADP) RESET L: ON
38 MOTOR; O T.T./U.D MOTOR + 99 CLOCK O CLOCK OUTPUT (CXD25890)
39 MOTOR- O T.T./U.D MOTOR - 100 25890 MUT I MUTING SIGNAL INPUT (CXD25890) H: ON
40 TRAY-M + O TRAY MOTOR +
41 TRAY-M - O TRAY MOTOR »
42 T T-MSP O TURNTABLE MOTOR SPEED
43 CD-VDD O CD VDD CONTOROL(BA5936S MUTE) H: CD
4451 - 0 NOT USED
52 LED-STBY O LED STANDBY ON/OFF L: ON
53 LED-TIMER O LED TIMER ON/OFF L: ON
5455 DECK A,B I DECK MECHA MODE SWITCH A,B H: STOP L: PLAY
56 VDD - +5V
57 VSS - GND
58.59 HALF A,B I DECK MECHA HALF SWITCH A,B L: EXSIT
60 REC-FEW-SW I REC FEW SWITCH L: HOOK EXSIT

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