Panasonic SL-SV550GT User manual

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.
2003 Matsushita ElectricIndustrial Co., Ltd. All rights reserved.
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
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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
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AD0305109C3
PortableCD Player
SL-SV550GK
Colour
(S)..........Silver Type
SPECIFICATIONS
1

2003 Matsushita ElectricIndustrial Co., Ltd. All rights reserved.
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.
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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.
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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.
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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)
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-Check the P.C.B. (Aside) as shownbelow.
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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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-Follow the (Step 1) -(Step 5) of item 5.1.1.
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10

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5.3. Replacement for the traverse motor
-Follow the (Step 1) -(Step 4) of item 5.1.1.
NOTE:
Besure to confirm the item 4“Handling Precautions for Traverse
Deck” before removing the traverse deck ass’y.
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5.4. Replacement for the optical pick-up
-Follow the (Step 1) -(Step 4) of item 5.1.1.
-Follow the (Step 1) -(Step 3) of item 5.3.
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5.5. Replacement for the rest switch
-Follow the (Step 1) -(Step 4) of item 5.1.1.
-Follow the (Step 1) , (Step 2) of item 5.3.
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6. Checking the Operation Problems on the Traverse
Deck (Optical Pick-up)
Make sure tofollowthe procedures belowtocheck the operation problems of the traverse deck
(optical pick-up) before replacing it.
Replace the traverse deck onlyafterthe problemis identified.
6.1. Check the operations described below on the traverse deck
after replacing
6.1.1. Checking skipsearch
1. Playan ordinarymusical program disc.
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2. Press the skipbutton to check for normal skipsearch operation
(inboth the forward and reverse directions).
6.1.2. Checking manual search
1. Playan ordinarymusical program disc.
2. Press the manual search button to check for smooth manual
search operation at either low or high speed (inboth the forward
and reverse directions).
6.1.3. Checking playability
1. Playthe 0.7mm black dot and the 0.7mm wedge on the
playabilitytest disc (SZZP1054C)and verifythat no sound skipor
noise occurs.
2. Playthe middletracks of the uneven test disc (SZZP1056C)and
verifythat no sound skipor noise occurs.
7. Automatic Adjustment Results Display Function /
(Self-Check Function)
Onthe unit (SL-SV550), eachautomatic adjustment result are displayedon the LCD. This
function is convenient tocheck oridentifywhichautomatic adjustment circuit is incorrect.
The followings are the contents of the automatic adjustment result displays (Self-Check
Function).
7.1. How to displayautomaticadjustment results
1. Set power source voltage to 4.5VDC. (AC adaptor IN)
2. Load the test disc (SZZP1054C).
3. Press the VOL- and S-XBSbuttons simultaneouslyand holdthem,
and additionallypress the (PLAY/PAUSE) button.
4. Press the (STOP/OPROFF) button once.
5. Anautomaticadjustment resultisdisplayed on the LCD.
7.2. Displayof automaticadjustment results (Self-Check Function)
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