Kenwood RXDM 31 MD Service Manual

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RXD-M31 MD

CONTENTS / ACCESSORIES / CAUTIONS

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

Accessories
,

FM indoor antenna (1)
(T90-0801-05)

Loop antenna (1)
(T90-0846-08)

Remote control unit (1)
(A70-1241-05) :RC-F503 (K,P,M)
(A70-1287-05) : RC-M0505E (E,T)

Battery cover (A09-11 14-08)

System configuration

SYSTEM MAIN UNIT SPEAKER
HM-381MD RXD-M31MD ~>:

>:< Refer number for LS-M31(M). refer to parts list on page 52.

Cautions

Batteries (Re/AA) (2)

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

AC plug adaptor (1)

(E03-0115-05)
cord to the shape

®jw
of the wall outlet.

(Accessory only for regions where
use is necessary.)

Use to adapt the
plug on the power

Note related to transportation and movement
Before transporting or moving this unit, carry out the follow-
ing operations.

0 Remove the CD or MD from the unit.

9 Press the Mn key of the MD.

Press the NII key of the CD.
Wait for some time and verify that the display becomes
as shown in the figure.

0
0

6 Wait a few seconds and turn the unit OFF.

Operation to reset

The microcomputer may fall into malfunction (impossibil-

ity to operate, erroneous display, etc.) when the power

cord is unplugged while unit is ON or due to an external

factor. In this case, execute the following procedure to

reset the microcomputer and return it to normal condi-

tion.

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

Unplug the power cord from the power outlet then, while
holding the set/demo" key depressed, plug the power

cord again.
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1. Initialization

1-1 Setting oti tial conditions
While pressing the [SET] Key plug the AC power cord
into an AC power outlet.
1-2 lnitIaII ng operation
0 A microcomputer ls initialized Ior start when the AC
power is turned on while pressing the [SET] key. At
that time. CD mechanismi MD mechanism and CASV
SETTE mechanism are also initialized,
. During the initial operation, the display shows "lNiTiAL-
IZE" and normai indlcaiion, aiier that it goes a" imme-
diately.

1-3 Initial items and back up data

ITEMS

OFF

15

. CENTER
LOUDNESS OFF

AMP EX. BASS ON

NPUT SEL TUNER

0

D

D

FM
LIMTT
AUTO
TEST 7

TUNER

AM 12 :00
AM 12 :00
AM 12 :oo
PLAY
TUNER

1

OFF

OFF
SLEEP OFF

CLOCK
TIMER

PLAY MODE TRACK
REPEAT OFF
RANDOM OFF
PLAY MODE STOP

CD

FORWARD
D

DECK

OPERATION MODE STOP

>I

1-4 Mechanism initialization

1-4-1 c1) mechanism
~ 11 a mechanism error occurs, "C" is indlcated on the
display
1-4-2 MD mechanism
~ The MD ON code is input within 4 seconds atter turned
the power port on, the MD lnitial code tDlzzl-i) is out-
put.
11 the MD on code is not input, the error indication is
dlsplayed as "M" on the display,
1-4-3 CASSETIE mechanism
- il a mechanism error occurs "X" is indicated on the dis-
play.

2. TUNER preset frequency
ch

3. Destination list of TUNER
Dem U-COM Discrimination
nation
K P Kl
M x K2

J J

ET E

0:(inpul low)

I:(lnput high)

(DSW4:50pln, DSW3:49pm. DSW2:48pm)

Receiving ireouency

_ Channel
nation DESI Osw4 DSW3 Dswz Band range

space

4. Main microprocessor M30622MA-198FP (MAIN BOARD ICAO1)

4-1 Microprocessor periphery block diagram

c1) mechanism

T

Mechanism
rem comm?
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Auto reverse
cassette
mechanism

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KEYi SOUND REPEAT MENU SET POWER 7 KEY
KEY2 STOP I S. DOWN i<< CD MD >i11 MD rec - KEY
90le NH (AUX) OFF 1
KEYa 5 UP >>i EJECT TUNER/band AUX TAPE TAPE KEY
91PTN A « » REC OFF z

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