Kenwood RXDM 51 MD Service Manual

Page 1

RxorMblMDIK) COVER1,lP( 98.12.1019:11 y [ w 2

MICRO HiFi COMPONENT SYSTEM

RXD-M51/M51MD KENWOOD

SERVICE MANUAL
(HM-531/581 MD)

Dressing panel
(A21 -3707-03)

Knob

(K29-7392-02)

Dressing panel

Panel (MD)
(A29-1022-O4)

/\
K

© 1998-9/851-5477-00 (K/K) 2138

Front glass
(810-3418-03)

KENWOOD

Panel
%(A60-1496-11)

IEI
W. IEI
1&1

Knob

I:I standby/timer

(K29-7393-03)

set/damn '

l/d)

It,

-| q
|] DISC LOADING MECHANISM l]

093 l mun,- a,
»

I on/slandby I

(A21-3721-03)

I Indicator
(812-0351-03)

II
1 I .-7Knob
I cn>III MD >III I MDrec f-] T] 3 (K29-6358-14)
3 a; I
l I I I I I W I TUNER | Aux
I I I I I I II II II II
I 44* TAPE/preset 4» band

Knob
(K29-7394-03)

TAPE m:

remole

phones

. Mmiature phone lack
(E11-0344-05)

From glass
(B1 0-3419-14)

Illustration is RXD-M51 MD.
* Refer to parts list on page 49.

~ Refer to DM-3090 service manuaI(B51-5396-OO), if

require the following items in detail.

1) MD mechanism(MDM-98A) disassembly for repair

(P519355)

2) Semiconductor description
IC1101zRF signal control(page9)
|C1201:ENDEC/ATRAC(page10,11)
IC1401:system microcomputer(page 12,13)

Caution : No connection of ground line it disassemble the
unit.
Please connect the ground line on rear panel,
PCBs, Chassis and some others.

KENWOOD-Crop. certifies this equipment conforms to DHHS
Regulations No.21 DFR 1040. 10, Chapter 1, Subchapter J.

DANG ER : Laser radiation when open and interlock defeated.

AVOID DIRECT EXPOSURE TO BEAM

L

Page 2

JRXDaMSlMDlK)CO\/ER1,1P( 98.12.1019111 y [w 3 44%
RXD-M51/M51 MD

CONTENTS / ACCESSORIES / CAUTION

Contents

CONTENTS / ACCESSORIES / CAUTION ................. 2 PC BOARD .......................
EXTERNAL VlEW/DISASSEMBLY FOR REPAIR ....... 3 SCHEMATIC DIAGRAM
BLOCK DIAGRAM ............. ...4 EXPLODED VIEW
CIRCUIT DESCRIPTION ...5 PARTS LIST ..........
ADJUSTMENT ................... 11 SPECIFICATIONS
WIRING DIAGRAM .................................................... 12

Accessories
r

N
Please confirm that the following accessories are present.
- - FM indoor antenna (1) - , l- Loop antenna (1) (T90-0833-05) -
1 Europe UK and Russia Other countries I I AM loop antenna stand (1) 1
I (T90-0810-05): TE (T90-0801-05): M : I (.119-3645-05» I
I I : I
I : a I
I ' . I
1 i : ' 1
AC plug adapter (1)
(E03-O115-05) _
i , Speaker cords (2) BatterIes (RS/AA) (2)
(E30-5500-05)
Use to adapt the plug on the power 77 ' r '
\ cord to the shape of the wall outlet.
c (Accessory only for regions where
use IS necessary.
Remote control unit (1) Remote control unit (1) Remote control unit (1)
(A70-1236-05) : RC-M0503E (A70-1242-05) :RC-F0503E (A70-124I-05) : Rc-F0503
J
System configuration
SYSTEM MAIN UNIT DESTINATION SPEAKER SP CORD PARTS.NO.
HM-581MD RXD-M51MD E1T1 LS-M61 E30-5500-05
HM-531 RXD-M51 M1 E2T2 LS-M51 E30-5500-05
Caution
Operation to reset
The mIcrocomputer may fall Into malfunctlon (Imposs'bll' Unplug the power cord from the power outlet then, while
Ity to operate, erroneous display, etc.) when the power . .. ,,
. . . . hoIdIng the set/demo key depressed, plug the power
cord Is unplugged thIe unIt Is ON or due to an external cord a ain
factor. In this case, execute the following procedure to g '
reset the microcomputer and return it to normal condi-
tion. I: d
0 Please note that resetting the microcomputer clears the 53 emu K5
contents stored in and it returns to condition when it left
the factory.