Panasonic SL-SV550GT Manuale utente

AD0311176A3

PortableCD Player

SL-SV550GT

Colour

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

Please use thismanual together with the service manual for Model

No. SL-SV550GK, Order No. AD0305109C3.

Unauthorized copying and distribution isaviolation of law.

1. Note

-Thissimplified service manual isprovided to indicate the

differences between the original model No. SL-SV550GK-S and the

subsequent model No. SL-SV550GT-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.

-All parts are supplied byMESA.

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

Remarks

SL-SV550GK-S SL-SV550GT-S

Cabinet Parts

20 RGN2464-H RGN2615-H NAME PLATE

AccessoryParts

A2 N0JCCE000001 RFEA439G-U AC ADAPTOR

A3 RQT6669-K RQT7401-K OPERATING INSTRUCTIONS

CHINESE

A3 RQT6766-B ----- OPERATING INSTRUCTIONS

DELETE

A8 ----- RQLA0816 OPERATION STICKER

ADDITION

NOTE

Packaging Parts

P2 RPK1931 RPK1930 GIFT BOX

NOTE *1:

The operation sticker(A8) is insertedintooperating instructions.

F0311KH

AD0305109C3

PortableCD Player

SL-SV550GK

Colour

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

SPECIFICATIONS

Unauthorized copying and distribution isaviolation of law.

1. Accessories

-AC adaptor

(N0JCCE000001)..........................................1pc.

-Stereo earphones

(L0BAB0000173)...........................................1pc.

-Wired remote control

(N2QCBD000011).........................................1pc.

2. Location of Controls and Connection to Other

Equipment

3. Precaution of Laser Diode

Caution:

Thisproduct utilizes alaser diode with the unitturned on, invisible

laser radiation isemitted from the pick-up lens.

Wavelength: 780 nm

Maximum output radiation power from pick-up: 100 W/VDE

Laser radiation from the pick-up lens issafetylevel, but be sure the

followings:

1. Donot disassemblethe optical pick-up unit, since radiation from

exposed laser diode isdangerous.

2. Donot adjust the variableresistor on the pick-up unit. Itwas

alreadyadjusted.

3. Donot look at the focus lens using optical instruments.

4. Recommend not to look at pick-up lens for along time.

4. Handling Precautions for Traverse Deck

The laserdiode inthe traverse deck (optical pick-up) maybreak downdue topotential

difference causedbystatic electricityof clothes orhumanbody.

So, be careful of electrostatic breakdownduring repairof the traverse deck (optical pick-up).

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

1. Donot subject the optical pick-up to staticelectricityas itis

extremelysensitive to electrical shock.

2. To protect the laser diode against electrostaticbreakdown, be

sure that the short land of the flexibleboard (FFCboard) should

be short-circuitbysolder before pulling out the FFC. Then

inserting ashort pinor similar object into the tipof the flexible

board. / (Refer to Fig. 4-1.)

3. Take care not to applyexcessive stress to the flexibleboard (FFC

board).

4. Donot turn the variableresistor (laser power adjustment). Ithas

alreadybeen adjusted. (Refer to Fig. 4-1.)

Fig. 4-1.

4.2. Caution when replacing traverse deck

The newtraverse deck short-circuits bythe short pin, the foil (B) and short lands toprotect the

laserdiode against electrostatic breakdown. Be sure toreplace tonewone following

procedures.

1. Remove the short pinfrom the FFC, and then connect itto 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 electrostaticbreakdownprevention

4.3.1. Human bodygrounding

Use the anti-static wrist straptodischarge the static electricityfromyourbody. (RefertoFig. 4-2.

)

Fig. 4-2.

4.3.2. Worktablegrounding

Put a conductive material (sheet) orsteel sheet on the area where the traverse deck (optical pick

-up) is placed, and ground the sheet. (Referto Fig. 4-3.)

Fig. 4-3.

Caution:

The staticelectricityof 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).

5. Operation Checks and Component Replacement /

Procedures

-Thissection describes procedures for checking the operation of

the major printed circuitboards and replacing the main

components.

-For reassemblyafter operation checks or replacement, reverse the

respective procedures. Special reassemblyprocedures are

described onlywhen required.

5.1. Checking for the P.C.B.

5.1.1. Checking forthe P.C.B. (A side)

-Check the P.C.B. (Aside) as shownbelow.

5.1.2. Checking forthe P.C.B. (B side)

-Follow the (Step 1) -(Step 7) of item 5.1.1.

-Check the P.C.B. (Bside) as shownbelow.

5.2. Replacement for the LCD, CD lidand operation SW

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