Panasonic RX-DT30 Manual de usuario

ORDER NO. MD9502012C1

Service

Manual

Portable Stereo CD System

MASH*

Radio Cassette

RX-DT30

Colour

TAPE DECK : SG-20W MECHANISM SERIES

TRAVERSE DECK : RAE01 13Z MECHANISM SERIES

SPECIFICATIONS

Radio Section

Frequency range

Intermediate frequency

Sensitivity

HCD Player

Sampling frequency

Decoding

Beam source

No. of channels

Wow and flutter

D/A

converter

88-108MHz

525

1705

kHz

10.7 MHz

455

kHz

dB/50

(

-3

limit sens.

)

dB/m/50

44.1

kHz

16 bit

Iinear

Semiconductor laser

(wavelength 780 nm)

2 channel, stereo

Less than possible measurement data

MASH (1 bit DAC)

Panasonic”

(K) Black Type 1

Tape Recorder

Track system

Recording system

Erasing system

Monitor system

Frequency range

Normal

General

4 track, 2 channel, stereo

AC bias

Multi

pole magnet

Variablesoundmonitor

14000 Hz

Power requirement

120V, 60Hz

Power consumption; 30W

Battery 12 V (8

“D”

size, R20/LR20 batteries)

Speakers 10 cm (4”) x 2

Jacks

Output Headphones;

32c1

Dimensions (W x H x D) 580x192

x260mm

(22’3/~s”x79/~6”x1

01/4”)

Weight 4.5 kg (9 lb.

oz.)

without batteries

Notes

Specifications are subject to change without notice.

Weight

and

dimensions are approximate.

1995 Matsushita Electronics (S) Pte. Ltd.

distribution is a violation of law.

RX-DT30

Disassembly Instructions

Warning

This

product uses a laser

diode.

Refer to

caution

statements on page 2.

ACHTUNG :

Die

laserernheit

nicht

zerlegen.

Die

lasereinheit darf nur gegen eine vom hersteller

spezrfizierte

einheit ausgetauscht werden.

“ATTENTION SERVICER”Some chassis components may have sharp edges. Be careful when

disassembling

and servicing.

Ref. No.

1 Removal of the Handle Ref. No.

Procedure

Release 2 ribs. Procedure

Pull out the handle.

-m--_--

Handle

-__

Ref. No.

Procedure

2*3

Removal of the Top Cabinet Unit ~

Press the CD eject button.

2. Remove 5 screw

Q).

3. Remove the Top Cabinet

Unit.

CD Eject Button

Ref. No.

Procedure

2+31,4

Removal of the Control P.C.B.

Removal of the Front Cabinet

Remove the battery cover.

2. Remove 8 screws

(

Front Cabinet

Press the 2 eject buttons.

Release 1 claw.

5. Remove the front cabinet

the

direction

of arrow

Remove 1 connector

(CP307).

1. Remove 2 connectors (CN303, CN801).

2. Remove FFC cable from the connector CN702 (Control P.C.B.).

3. Release 4 claws.

FFC Cable Control P.C.B. CN702

CN303

Claws

-5-

RX-DT30

Ref. No.

Procedure

2*31,5

---~~~

-~~~

-~~~~

Removal of the Connector P.C.B.

1..

Remove

screws

(

2. Remove 4 connectors

(CN1,

CN304. CN305,

CN801).

3. Remove the Connector P.C.B.

Ref. No.

~----I

Removal of the Mechanism Unit

_.~

~~~

.~~~~~

Ref. No.

Removal of the Traverse Unit

FFC Cable

Traverse Unit

CN702

Remove 4 screws

(

Remove FFC cable from the connector CN702 (Control P.C.B.)

CN1

CN305

CN304

CN801

Connector P.C.B.

Mechanism Unit

Remove 2 connectors

(CP301,

CP602

)

2. Remove 6 screws

(

Removal of the Main P.C.B.

Ref. No.

CP306 Main P.C.B.

1..

Remove 2 screws

Remove 1 connector

(CP306).

3.Pull

out the main P.C.B. in the direction of arrow.

-6-

RX-DT30

Removal of the Power Supply

P.C.B.

Remove 6 screws

2. Remove 1 connector

(CP306)

Power

SUPPLY

P.C.B.

CP306

-m$j

Ref. No. ~

Removal of the CD Cover

Procedure

(

2*3*11

Hold the CD cover

half-open

position.

2. Release the rib

direction of arrow

e;l.

3. Pull out the CD cover in direction of

arrow3.

4. Release the

rib

direction

arrow@

5. Pull out the CD cover.

Ref. No.

)

Removal of the Speakers

~~~~

~~~

-~~

~~~~

-~~

Procedure

2413

1. Remove 8 screws

(

2. Cut black bond at wire

dressing

point

before removal of the speakers.

,?,

$”

‘2;

Bond

Speaker Speaker

Ref. No.

Procedure

21,9*10

-7

;

Removal of the Battery

-I.-

Release

claw.

2. Pull out the battery P.C.B.

P.C.B.

Ref. No.

Procedure

21,31,12

Removal of the Disc Clamp Unit

CD Cover

Press the CD eject button and then open the CD cover.

2. Remove the

disc

clamp

unit

the direction of arrow

(Ijfollow

by(2,‘

Ref. No.

’

Removal of the Cassette Compartment

RX-DT30

Ref. No.

~~~

Procedure

21,31,7

*15

Removal of the Servo P.C.B.

;

Traverse

Unit

Terminals

of traverse motor

Terminals of spindle motor

Remove 3 screws

(

2. Desolder 2 termrnals of

spindle

motor.

3. Desolder 2 termrnals of traverse motor.

4. Remove the flexrble cable from

CN701

Removal of the flexrble cable

Push the top of the connector in the

direction

of the arrow@, and then

pull out the flexrble cable

the

directron of the

arrowa.

Note

Insert a short

into

the flexible cable for

traverse unit.

Ref. No.

’

Removal of the Traverse Deck Ass’y

Procedure

21)31)7

’

*151,16

~~,

Widen

2 bosses by

using

a flat tip screwdriver and remove 2 pins.

Remove the Traverse Deck Ass’y

direction of arrow @follow by

;2,.

Traverse Deck Ass’y

CD OpenSpring

Install the CD open spring as shown in above diagram.

-8-

Install the CD cover onto the top

cabinet.

Note

When

installing

the CD cover, make sure the CD cover

IS in half open positron.

Release the

spring

in the directton of arrow

RX-DT30

n INSTALLING CASSETTE COMPARTMENT

/J-Cass.

Open

Spring

Install the

cass.

open

spring

as shown

above diagram.

Cassette Compartment

2. Fix the cassette compartment to front cabinet

Release the spring

INSTALLING SERVO P.C.B.

Before installing the servo P.C.B., move the optical pickup

toward the outer edge from the mark

“A”.

(Otherwise, the rest switch

(S701)

mounted on the servo

P.C.B may be damaged.)

2. Connect the flexible cable to the connector (CN701).

3. Install the servo P.C.B. in the traverse deck ass’y with

the 3 screws

(

4. Solder the 2 terminals of the traverse motor and the

2 terminals of the spindle motor.

Note

Connect the flexible cable to the connector (CN701)

firmly.

Tighten the screws before soldering the terminals.

Spindle motor

-9-

RX-DT30

HOW TO CHECK THE TRAVERSE UNIT

1. Remove the top cabinet

unit.

(Refer to disassembly instructions, Fief No. 3)

Remove

screws.

(

)

Traverse Unit

3. Set up the traverse unit as shown in diagram.

4. Install the compact disc and disc clamp unit.

Note

Before perform checking, make sure the

switch SW401 is switched to “ON” position.

(as shown

diagram).

n WHAT TO DO WHEN THE TAPE IS ENTANGLED

When the tape is caught

the pitch roller, etc. Release the tape

by turning the pulley on the motor with the screwdriver in the

direction of arrow.

-lO-

RX-DT30

Terminal Guide of

ICs,

Transistors

Diodes

AN71 35

BA3936

AN7205

BA7755A

2SC1684QTA

2SC1684RTA

2SC1684STA

MA4056N-MTA

AN7317

AN8389SE1

M38222M2051 MN66271

pmiq

pFq

2SC2785FTA

2SJ40CDTA

BN1A4MTA

RVDMTZ5RGBTA

RVDMTZ6R8BTA

‘.,

,,_+

’

,’

“,I

,/’

RL203M11

RVD1

SS1

33TA SLB55VRTE7

Cathode

,,,,

4.7”’

AN8802SCE1

132

PST600DTA

2SB709S

BA1442A

2SC 1740SRTA

RVTDTC114EST

-ll-

RX-DT30

Schematic Diagram

SERVO CIRCUIT

lC701

AN8802SCE1

SERVO

AMP

RX-DT

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