Panasonic SL-CT520EB Manuale utente

AD0504046AE

PortableCD Player

SL-CT520GK / SL-CT520GT

Colours

(A)...........Blue Type

(P)...........Pink Type [SL-CT520GKonly]

(S)...........Silver Type

(Y)...........Yellow Type [SL-CT520GKonly]

Please use thismanual together with the service manual for Model

No. SL-CT520EB/EG/EE/SG, Order No. AD0502004C0.

Unauthorized copying and distribution isaviolation of law.

PDFcreated withpdfFactoryProtrialversion www.pdffactory.com

1. Note

-Thissimplified service manual isprovided to indicate the

differences between the original model No. SL-CT520SG-S and the

subsequent model No. SL-CT520GK-A/P/S-Y, SL-CT520GT-A/S.

2. Replacement Parts List

Note:

-Important safetynotice:

Components identified bymark have special characteristics

important for safety.

Furthermore, special parts which have purposes of fire-retardant

(resistors), high-qualitysound (capacitors), low-noise (resistors),

etc. are used.

When replacing anyof components, be sure to use only

manufacture’sspecified parts showninthe parts list.

-The parenthesized indications inRemarks columns specifythe

areas and colours.

(A): Blue Type

(P): Pink Type

(S): Silver Type

(Y): Yellow Type

PDFcreated withpdfFactoryProtrialversion www.pdffactory.com

-All parts are supplied bySPC.

Ref.No. Change of Parts No. Part Name & Description Pcs

Remarks

SL-CT520SG-S SL-CT520GK

CABINETPARTS

13 RGN2805-H RGN2810-H1 NAME PLATE 1

ACCESSORIES

A2 L0BAB0000190 L0BAB0000183 STEREO EARPHONES 1

A3 N2QCBD000048 N2QCBD000049 WIRED REMOTE CONROL 1

A5 RFEA444Z-S RFEA473T-1S AC ADAPTOR 1

A6 RQT7819-Z ------ OPERATING INSTRUCTIONS 1

DELETE

A7 K2DA42E00001 ------ POWER PULG ADAPTOR 1

DELETE

PACKING MATERIALS

P2 RPK2325 RPK2236 GIFT BOX 1 (

P2 RPK2325 RPK2287 GIFT BOX 1 (

P2 RPK2325 RPK2288 GIFT BOX 1 (

P2 RPK2325 RPK2289 GIFT BOX 1 (

P3 RPQ1849 RPQ1848 PAD 1

Ref.No. Change of Parts No. Part Name & Description Pcs

Remarks

SL-CT520SG-S SL-CT520GT

CABINETPARTS

13 RGN2805-H RGN2813-H NAME PLATE 1

ACCESSORIES

A2 L0BAB0000190 L0BAB0000183 STEREO EARPHONES 1

A3 N2QCBD000048 N2QCBD000049 WIRED REMOTE CONROL 1

A5 RFEA444Z-S RFEA439G-U AC ADAPTOR 1

A6 RQT7816-B RQT7820-K OPERATING INSTRUCTIONS 1

CHINESE

A6 RQT7817-K ------ OPERATING INSTRUCTIONS 1

DELETE

A6 RQT7819-Z ------ OPERATING INSTRUCTIONS 1

DELETE

A7 K2DA42E00001 ------ POWER PULG ADAPTOR 1

DELETE

PACKING MATERIALS

P2 RPK2325 RPK2233 GIFT BOX 1 (

P2 RPK2325 RPK2266 GIFT BOX 1 (

P3 RPQ1849 RPQ1850 PAD 1

F0504KH

PDFcreated withpdfFactoryProtrialversion www.pdffactory.com

rights reserved. Unauthorized copying and

distribution is a violation of law.

SL-CT520EB

SL-CT520EG

SL-CT520EE

SL-CT520SG

Colours

(A)...........Blue Type

(P)...........Pink Type [SL-CT520SG only]

(S)...........Silver Type

(Y)...........Yellow Type [SL-CT520SG only]

Portable CD Player

AD0502004C0

1 Accessories 3

2 Location of Controls 3

3 Precaution of Laser Diode 4

4 Handling Precautions for Traverse Deck 5

4.1. Handling of traverse deck (optical pick-up) 5

4.2. Caution when replacing traverse deck 5

4.3. Grounding for electrostatic breakdown prevention 5

5 Operation Checks and Component Replacement Procedures

5.1. Checking for the P.C.B. 6

5.2. Replacement for the CD lid unit, open spring 1, open

spring 2 and retainer plate 7

5.3. Replacement for the traverse motor 8

5.4. Replacement for the optical pick-up 9

5.5. Replacement for the rest switch 10

6 Display of Self-Diagnostic Function 11

7 Checking the Operation Problems on the Traverse Deck

(Optical Pick-up) 12

7.1. Check the operations described below on the traverse

deck after replacing 12

8 Automatic Adjustment Results Display Function (Self-Check

Function) 13

8.1. How to display automatic adjustment results 13

8.2. Display of automatic adjustment results (Self-Check

Function) 13

9 Type Illustration of ICs, Transistors and Diodes 14

10 Schematic Diagram Notes 14

11 Schematic Diagram 15

12 Printed Circuit Board and Wiring Connection Diagram 19

13 Block Diagram 21

14 Terminal Function of ICs 23

14.1. IC301(C2BBGF000595): System Control 23

14.2. IC501(MN6627962JB): Servo Amp, Servo Processor,

Digital Signal Processor, Digital Filter & D/A Converter 23

15 Supply of Rechargeable Battery as Replacement Parts 25

16 Caution in use of Rechargeable Battery 25

17 Replacement Parts List 26

18 Cabinet Parts Location 29

19 Traverse Unit Parts Location 30

20 Packaging 31

CONTENTS

Page Page

SL-CT520EB / SL-CT520EG / SL-CT520EE / SL-CT520SG

AC adaptor for SL-CT520EB

(RFEA435B-S)................................................1 pc.

AC adaptor for SL-CT520EE/EG

(RFEA431E-S)................................................1 pc.

AC adaptor for SL-CT520SG

(RFEA444Z-S)................................................1 pc.

Stereo earphones except for SL-CT520SG

(L0BAB0000183)...........................................1 pc.

Stereo earphones for SL-CT520SG

(L0BAB0000190)...........................................1 pc.

Wired remote control except for SL-CT520SG

(N2QCBD000049).........................................1 pc.

Wired remote control for SL-CT520SG

(N2QCBD000048).........................................1 pc.

External battery case

(RFA2666-H)..................................................1 pc.

Rechargeable batteries (with case) for SL-CT520EE only

(RFKHHR4AGE)............................................2 pcs.

Rechargeable batteries (with case) for SL-CT520SG only

(RFKHHR4AGTB)..........................................2 pcs.

Power plug adaptor for SL-CT520SG only

(K2DA42E00001)...........................................1 pc.

1 Accessories

2 Location of Controls

Battery

compartment

Lens

Headphone jack (A)

Open

Play/Pause

Stop/Turn off

Battery case terminal

DC IN jack

Charge lamp

Play/Stop/Turn off

Earphones

Display panel

Equalizer

Mode

Memory/Recall

Volume control

Skip/Search

Hold

SL-CT520EB / SL-CT520EG / SL-CT520EE / SL-CT520SG

3 Precaution of Laser Diode

SL-CT520EB / SL-CT520EG / SL-CT520EE / SL-CT520SG

The laser diode in the traverse deck (optical pick-up) may break

down due to potential difference caused by static electricity of

clothes or human body.

So, be careful of electrostatic breakdown during repair of the

traverse deck (optical pick-up).

4.1. Handling of traverse deck

(optical pick-up)

1.Do not subject the optical pick-up to static electricity as it is

extremely sensitive to electrical shock.

2.To protect the laser diode against electrostatic breakdown,

be sure that the short land of the flexible board (FFC board)

should be short-circuit by solder before pulling out the FFC.

Then inserting a short pin or similar object into the tip of the

flexible board.

(Refer to Fig. 4-1.)

3.Take care not to apply excessive stress to the flexible board

(FFC board).

4.Do not turn the variable resistor (laser power adjustment). It

has already been adjusted. (Refer to Fig. 4-1.)

Fig. 4-1.

4.2. Caution when replacing

traverse deck

The new traverse deck short-circuits by the short pin, the foil

(B) and short lands to protect the laser diode against

electrostatic breakdown. Be sure to replace to new one

following procedures.

1.Remove the short pin from the FFC, and then connect it to

the connector.

2.Cut the foil (B). (Refer to Fig. 4-1.) (Take care not to make

contact with cutting point each other.)

3.Unsolder the short lands. (Refer to Fig. 4-1.)

4.3. Grounding for electrostatic

breakdown prevention

4.3.1. Human body grounding

Use the anti-static wrist strap to discharge the static electricity

from your body. (Refer to Fig. 4-2.)

Fig. 4-2.

4.3.2. Work table grounding

Put a conductive material (sheet) or steel sheet on the area

where the traverse deck (optical pick-up) is placed, and ground

the sheet. (Refer to Fig. 4-3.)

Fig. 4-3.

Caution:

The static electricity of your clothes will not be grounded

through the wrist strap.

So take care not to let your clothes touch the traverse deck

(optical pick-up).

4 Handling Precautions for Traverse Deck

SL-CT520EB / SL-CT520EG / SL-CT520EE / SL-CT520SG

This section describes procedures for checking the

operation of the major printed circuit boards and

replacing the main components.

For reassembly after operation checks or replacement,

reverse the respective procedures. Special reassembly

procedures are described only when required.

5.1. Checking for the P.C.B.

5.1.1. Checking for the P.C.B. (A side)

Check the P.C.B. (A side) as shown below.

5 Operation Checks and Component Replacement

Procedures

SL-CT520EB / SL-CT520EG / SL-CT520EE / SL-CT520SG

5.1.2. Checking for the P.C.B. (B side)

Follow the (Step 1) -(Step 5) of item 5.1.1.

Check the P.C.B. (B side) as shown below.

5.2. Replacement for the CD lid

unit, open spring 1, open

spring 2 and retainer plate

Follow the (Step 1) -(Step 4) of item 5.1.1.

SL-CT520EB / SL-CT520EG / SL-CT520EE / SL-CT520SG

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