Technics SL-DV250 User manual

ORDERNO.AD0103078C2

DVD/VideoCD/CD changer

SL-DV250

Colour

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

Area

EG....................Europe.

System:SC-DV250

Because ofuniqueinterconnecting cables, whena

componentrequires service, send orbring intheentire

system.

Note:Refertotheservice manual forModel No.SA-

DV250 (ORDERNO.AD0103076C2) forinformation

on “ACCESSORIES”and “PACKAGING”.

SPECIFICATIONS

Specification

Disc played

DVD-Video disc 8 /12 cm single-sided, single-

layer/ 8/12 cm single-sided,

double-layer/ 8/12 cm double-

sided, double-layer

(onelayerperside)

CD(CD-DA, VIDEO-CD) 8 /12 cm discs

CD-R/RW disc 8 /12 cm discs

Audio

Numberofchannels 5.1(FL, FR, SL, SR, C, SW)

Video

Signal system PAL 625/50, PAL 525/60, NTSC

Outputlevel (75 )

Compositevideo 1Vp-p (75 )

S-video Y 1Vp-p (75 )

S-video C 0.3Vp-p (75 )(PAL)/ 0.286Vp-

p (75 )(NTSC)

Pick up

Beam source Semiconductorlaser

Wavelength 658/790 nm

General

Dimensions(W×H×D): 293×89×288 mm

Weight: 2.5kg

PowerSupply: DC10V

PowerConsumption: 12W

Notes:

1.Design and specificationsaresubjectto changewithout

notice.

2.Dimensionsand weightareapproximate.

System/SC-DV250

Sound processor:SH-DV250, Stereo tuner/ amplifier:SA-

DV250, DVD/Video-CD/CDchanger:SL-DV250 , Stereo

cassettedeck:RS-DV250, Speakers:SB-DV250 (front)/ SB-

PC95(center)/ SB-PS95 (surround)(all speakersaremadein

MAES.)

1. BeforeRepair

Thisequipment(SL-DV250),whichisthecomponentofthissystem, issuppliedwithpowerfrom

thetuner/amplifier(SA-DV250)through thesound processor (SH-DV250). Whenrepairing this

equipmentor checking operation ofthesystem, besuretoconnectthetuner/amplifierand sound

processor withit.

Thisequipment, eveninthestateofitas asingleequipment, permitspowersupplyand operation

check. Whenoperating itas asingleequipmentwithoutthetuner/amplifierand sound processor,

refertotheparagraph of"Measurementsand Adjustments.

2. Precaution of LaserDiode

3. Operating Instructions

4. Handling Precautions forTraverse Deck

Thelaserdiodeinthetraverse deck (optical pickup)may break downduetopotential difference

causedbystaticelectricityofclothes or humanbody.So, becareful ofelectrostaticbreakdown

during repairofthetraverse deck (optical pickup).

4.1. Handling oftraverse deck (optical pickup)

1. Donotgiveconsiderableshock tothetraverse unit(optical

pickup)as ithas anextremelyhigh-precise structure.

2. Whenreplacing theoptical pickup, install theflexiblecableand cut

its shortland withanipper. See theoptical pickup replacement

procedureinthisTechnical Guide. Beforereplacing thetraverse

unit, removetheshortpinforpreventingstaticelectricityand

install anew unit. Connect theconnectoras shorttimeas possible.

3. Theflexiblecablemaybecutoff ifanexcessiveforce isappliedto

it. Use caution whenhandling thecable.

4. Thehalf-fixedresistorforlaserpoweradjustmentcannotbe

adjusted. Donotturntheresistor.

Fig. 1

4.2. Grounding forelectrostaticbreakdownprevention

1. Humanbodygrounding

Use theanti-staticwrist straptodischargethestaticelectricity

fromyourbody. (Asshownin Fig. 2 .)

2. Worktablegrounding

Putaconductivematerial (sheet) orsteel sheet on thearea where

theoptical pickup isplaced, and ground thesheet.

Caution:

Thestaticelectricityofyourclothes will notbegroundedthrough

thewrist strap. So, take carenottolet yourclothes touchthe

traverse deck (optical pickup). Fig. 2

5. Operation Checks and Component Replacement

Procedures

-Thissection describes procedures forchecking theoperation of

themajorprintedcircuitboardsand replacing themain

components.

-Forreassemblyafteroperation checks orreplacement, reverse the

respectiveprocedures. Special reassemblyprocedures are

describedonlywhenrequired.

5.1. Checking fortheDVDmodule(1) P.C.B.

-Check theDVDmodule(1) P.C.B. (Aside) as shownbelow.

-Check theDVDmodule(1) P.C.B. (Bside) as shownbelow.

5.2. Checking fortheoperation P.C.B.

-Follow the(Step1) -(Step3) ofitem5.1.

-Check theoperation P.C.B. as shownbelow.

5.3. Checking forthemainP.C.B.

-Follow the(Step1) -(Step3) ofitem5.1.

-Follow the(Step1) -(Step5) ofitem5.2.

-Check themainP.C.B. as shownbelow.

5.4. Checking fortheDVDmodule(2) P.C.B.

-Follow the(Step1) -(Step3) ofitem5.1.

-Follow the(Step1) -(Step5) ofitem5.2.

-Check theDVDmodule(2) P.C.B. as shownbelow.

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