ewt19s2 service manual

ewt19s2 service manual

Please do not offer the downloaded file for sell only use it for personal usage. Looking for other manual? For this no need registration. May be help you to repair. You could suffer a fatal electrical shock. Instead, contact your nearest service center. Note! To open downloaded files you need acrobat reader or similar pdf reader program. In addition, Also some files are djvu so you need djvu viewer to open them. These free programs can be found on this page: needed progs If you use opera you have to disable opera turbo function to download file. If you cannot download this file, try it with CHROME or FIREFOX browser. Translate this page: Relevant TV forum topics: EMERSON LC320EM3F WON'T START: SOLVED:taps2. This is a LCD TV brand EMERSON, model LC320EM3F and is completely death. At first revision, we detected some bad components in the switching power source. Switching MOSFET K10A50D, RESISTOR 0.19 Ohm, 2W, transistor switching controler 2SC5344, Zener Diode 1ZB36 (36V) and the 4A fuse. I had the SM of LC320EM9 model, so, the values of the components are different. I replace them all twice and they always broke again.I replace the 0.19Ohm resistor by a 0.39Ohm, maximizing the pulse received for the control transistor, for that purpose, also changed the 2.4KOhm resistor for 5.6KOhm. The switching MOSFET used was IRF640 replacing K10A50D, and transistor 2SC5344 was replaced by 2N5551. Finally we add a Zener diode not included in original board (marked with blue circle) limiting the colector voltage and gate voltage to 26V. For short, when we connect the power cord, every thing was fine, except than voltages at secondary of main transformer, was only 3.2V DC in all rectifiers. Found a diode in short-circuit (circled in red), replaced it and BINGO!, the TV return to live again. I Hope it serves as a nice experience for the future.You can write in English language into the forum (not only in Hungarian). Funai Equipment.http://gilendor.cz/userfiles/electrolux-dishwasher-service-and-repair-manual.xml

• ewt19s2 service manual, ewt19s2 service manuals.

The service procedures recommended by Funai and described in this service manual are effective methods of performing serviceIt is important to note that this service manual contains various CAUTIONSThe possibility exists that improperIt also is important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. FunaiConsequently, Funai has not undertaken anyAccordingly, a servicer who uses a service procedure or tool which is not recommended by Funai must first use all precautions thoroughly so that neither his safety nor the safe operation of theImportant Safety Precautions. Standard Notes for Servicing. Disassembly Instructions. Electrical Adjustment Instructions. Block Diagram. Schematic Diagram.Wave Forms. 8-1. Wiring Diagram. 9-1. IC Pin Function. 10-1. Cabinet Exploded View. 11-1. Packing Exploded View. 11-3. Mechanical Parts List. 12-1. Electrical Parts List. 13-1Reference Level ----------- 20Vp-p (CRT Green Cathode). Test Input Signal ---------- 400Hz 30% modulation. Description. Condition. Unit. Nominal. LimitPicture. Sound. MHz. MHzCondition. LimitHorizontal. Vertical. KHz. HzHorizontal. VerticalUnit. Limit. Center. Side. CornerVertical. Line. LineDescriptionCondition. LimitHzNominal specifications represent the design specifications. All units should be able to approximateLimit specificationsIn no case shouldHowever, in order to maintain such compliance, it is equallySafety Precautions for TV CircuitWith the instrument AC switch first in the on position and then in the off position, measure from aAny currentCorrectly replace all missing protective shields, including any removed for servicing convenience.Do not operate this instrument or permit it to be operatedServicers who defeatPlace the instrument AC switch in the on position. Connect one lead of an ohmmeter to the AC plugRepeat this test with the instrument AC switch inX-radiation in solid-state TV receivers, it is specially constructed to prohibit X-radiation emissions.http://nabil-doukali.com/userfiles/electrolux-dishwasher-owners-manual.xml

For continued X-radiation protection, the replacement picture tube must be the same type as theHigh voltage must be measured each time servic-Correct operation of the Xradiation protection circuits also must be reconfirmed each time they are serviced. (X-radiationAC(RMS) between chassis and earth ground regardless of the AC plug polarity. This chassis canThe two ground systems are electrically separated by insulationTake extra care to assure correct lead dress in the following areas:a.AC power cord for damage.Design alterations and additions, including,Additionally,For continued implosion protection, replace the picture tube only with one ofDo not remove, install, orPeople not soPrior to shipment from theTo confirm that the ACInsert the wires fully into the connector.Replace only with part number specified.B. In addition to safety, other parts and assembliesThese must also beL. When connecting or disconnecting the internalAC supply outlet. Examples: RF converters, RF cables, noise blocking capacitors, and noise blocking filters, etc. C. Use specified internal wiring. Note especially:D. Use specified insulating materials for hazardousE. When replacing AC primary side componentsF. Observe that the wires do not contact heat producing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.). G. Check that replaced wires do not contact sharpH. When a power cord has been replaced, check that. I. Also check areas surrounding repaired locations. J. Use care that foreign objects (screws, solder droplets, etc.) do not remain inside the set. K. Crimp type wire connector. The power transformer uses crimp type connectors which connect the power cord and the primaryWhen replacing the transformer, follow these steps carefully and preciselyReplacement procedureImportant: Do not re-use a connector (discard it).

Examine the area surrounding the repaired locationObserve that screws,Afterwards, perform the following tests and confirm the specified values in order to verify complianceChassis or Secondary Conductor. Primary Circuit TerminalsWhen replacing primary circuit components, confirmTable 1: Ratings for selected area. AC Line Voltage. Region. Clearance. Distance (d) (d')USA orFig. 1. Exposed Accessible Part. Note: This table is unofficial and for reference only. Be sure to confirm the precise values.Confirm the specified (or lower) leakage current between B (earth ground, power cord plug prongs) andAC VoltmeterEarth Ground. Power Cord Plug Prongs. Fig. 2. Insert load Z between B (earth ground, power cordAC voltmeter to measure across both terminals ofTable 2: Leakage current ratings for selected areas. Load Z. Leakage Current (i). Earth Ground (B) to:Exposed accessibleNote: This table is unofficial and for reference only. Be sure to confirm the precise values.Top View. OutCBA; when removing entire flat pack-IC, first applyBottom View. In. InputCaution:Put masking tapeHot-air. Flat Pack-IC. Desoldering. MachineMasking. Tape. Tweezers. With Hot-Air Flat Pack-IC Desoldering Machine:Flat Pack-IC. Fig. S-1-2. Fig. S-1-1With Soldering Iron:When you use solderFlat Pack-ICNote. When using a soldering iron, care must be taken toCBA, handle it gently because it may be damagedDesoldering Braid. Hot Air Blower. Soldering Iron. Fig. S-1-3When heating the pins, useIron Wire. To Solid. Mounting Point. Sharp. Pin. Fine Tip. Soldering IronFine Tip. Fig. S-1-4CBA; when removing entire flat pack-IC, first applyFlat Pack-IC. TweezersFig. S-1-6. With Iron Wire:When you use solderCBA; when removing entire flat pack-IC, first applySemiconductorsElectrostatic breakdown of the semiconductors mayBe sure to wear a grounding band (1M?) that is properly grounded to remove any static electricity that mayBe sure thatBe sure to place a conductive sheet or copper plateExample:Fig. S-1-7.

PresolderGrounding BandCopper PlateNote:When reassembling,This flowchart indicates the disassembly steps for theWhen reassembling, follow theBend, route and dress theCaution !When removing the CRT, be sure to discharge the. Anode Lead of the CRT with the CRT Ground WireDesolderTable. Reference Notes in the TableRemove screwsDisconnect CN501 thenDisconnect CN571 onCaution. Removal. Loc. No. Part. Fig. No. NoteAnode Cap, then slide the CRT backward. Rear. CabinetGround Wire before removing the Anode Cap.Fig. 1Degauss HolderDegaussing. CoilFront CabinetControl Plate. Fig. 4When CPU version is 200-0.07: Confirm that theGeneral Note:It is important to perform these adjustments onlyAlso, do not attempt these adjustments unless thePurpose: To obtain correct operation. Test Equipment Required. Symptom of Misadjustment: The picture is dark andWindow, Red Color, Dot Pattern, Gray Scale. Monoscope, Multi-Burst)N0121UD or N0134UD. Test Point. Adj. Point. Mode. InputNote: TP601, TP300(GND), VR661 --- Main CBA. How to make Service remote control unit:Purpose: To show the fine black color. Symptom of Misadjustment: Black color will notFig. 1-1How to set up the service mode:Service mode:Version of micro computer will display onData ValuesCOLOR, TINT, V-TINT and. SHARP Data Values. GeneralGeneralWhen CPU version is 053-0.10, perform the following settings:FM-MODE ---- set to OFF. AV-OUT ---- set to OFFPurpose: To get correct horizontal frequency. Purpose: Set AGC (Auto Gain Control) Level. Symptom of Misadjustment. If H f0 adjustment is inSymptom of Misadjustment: AGC does not synchronize correctly when RF input level is too weak andTest Point. InputCounter. Note: R583 --- Main CBA. Use Service remote control unit.Test Point. InputTapeGenerator DC. Volt MeterNotes: TP301 --- Main CBA. Use Service remote control unit.Enter the Service mode. (See Page 5-1)Purpose: To operate VCO correctly.Symptom of Misadjustment: VCO does not workNote: Use Service remote control unit.

Purpose: Set Black (Sub-bright) LevelSymptom of Misadjustment: If Sub-brightness isNote: TP300 (GND), D316 (Cathode) --- MAIN CBAMENU button is pressed.)Purpose: To get minimum leakage of the color signal carrier. Purpose: To obtain correct vertical height of screen image. Symptom of Misadjustment: If V. Size is incorrect, vertical size of image on the screen may not be properly displayed. Symptom of Misadjustment: If C- Trap AdjustmentTest Point. Input. D316 (Cathode)TapeAdj. Point. InputModeTapeColor. BarUse Service remote control unit. Note: Use Service remote control unit.Enter the Service mode. (See page 5-1). Receive the Monoscope Pattern.Purpose: To obtain correct vertical height of screenSymptom of misadjustment: If V. Position is incorrect, vertical height of image on the screen may not bePurpose: To obtain correct horizontal position ofTest Point. InputTapeSymptom of Misadjustment: If H. Position is incorrect, horizontal position of image on the screen mayNote: Use Service remote control unitTest Point. InputModeTapeNote: Use Service remote control unitPurpose: To adjust the beam current of R, G, B, andSymptom of Misadjustment: White color may bePurpose: To mix red, green and blue beams correctlySymptom of Misadjustment: White becomes bluishTest Point. InputRaster. TapeGenerator. See Reference. Notes below. Figure. Screen. Screen-ControlRasterPattern. Generator. Color analyzer. See below. FigureFig. 3. Note: Use Service remote control unitDegauss the CRT usingService remote control unit for Blue adjustment.Note: Confirm that Cut Off Adj.Note: Screen Control FBT --- Main CBA. Use Service remote control unitService remote control unit.Adjust the Red Cut off by pressing. Proceed to Step 5 whenThe display will momentarily. Adjust the GreenThe display will momentarily. Adjust the Blue cutIf not, then attempt the CutThe following 2 adjustments normally are notThey should be done onlyPurpose: To get proper brightness.

Symptom of Misadjustment: If Sub-Brightness isTest Point. Purpose: To obtain pure color.Symptom of Misadjustment: If Color Purity Adjustment is incorrect, large areas of color may not beGenerator. White. Black. InputYoke Purity. MagnetColor. This barFig. 4. Note: IQW Setup level --- 7.5 IRE. Use Service remote control unitThen input IQW signal from RF Input.Purpose: Set the optimum Focus. Symptom of Misadjustment: If Focus Adjustment isAdj. Point. InputTapeGenerator. See belowTest PointDY Wedges between CRT and Deflection Yoke. Purpose: To obtain proper convergence of red, greenSymptom of Misadjustment: If Convergence Adjustment is incorrect, the edge of white letters may haveTest Point. InputCrosshatch. FigureIf Main Fuse (F601) is blown, check to see that all components in the power supplyOtherwise it may cause some components in the power supply circuit to fail.Many electrical and mechanical parts in this chassis have special characteristics. These characteristics oftenReplacement parts that have these special safety characteristics areBefore replacing any of these components, read the partsThe use of substitute replacement parts that do not have the same safety characteristics as specified in the parts list may create shock, fire, or other hazards. Note:The correct part number is shown in theNote of Capacitors. ML --- Mylar Cap. PP --- Metallized Film Cap. SC --- Semiconductor Cap. L --- Low Leakage type. Temperature Characteristics of Capacitors are noted with the following. Tolerance of Capacitors are noted with the following. Note of Resistors. CEM --- Cement Res. MTL --- Metal Res. F --- Fuse Res. Capacitors and transistors are represented by the following symbols. CBA Symbols. Schematic Diagram SymbolsElectrolytic Capacitor. Digital TransistorTransistor or Digital TransistorPNP Transistor. NPN TransistorPNP Digital Transistor.

NPN Digital TransistorIf Main Fuse (F601) is blown, first check to see that all components in the power supply circuit are not defectiveOtherwise it may cause some components in the power supply circuit to fail.The correct part number is shown in thePlug the TV power cord into a standard AC outlet.:Power off modeIndicates that the voltageLine NumberIf Main Fuse (F601) is blown, check to see that all components in the power supplyOtherwise it may cause some components in the power supply circuit to fail.PositionCRT CBA Top ViewPositionIf Main Fuse (F601) is blown, check to see that all components in the power supplyOtherwise it may cause some components in the power supply circuit to fail.If Main Fuse (F601) is blown, check to see that all components in the power supplyOtherwise it may cause some components in the power supply circuit to fail.NTSC Color Bar Signal (with 1kHz Audio Signal). INITIAL POSITION: Unplug unit from AC outlet for at least 5 minutes.Waveform check points.Q503 CollectorQ377 EmitterWF11 1DIV: 2V 5msec. IC 551 Pin 7. Q 501 CollectorWH501A Pin 3. Q 572 CollectorWF12 1DIV: 10V 5msec. CN 571 Pin 4. TU 1 Pin 8Pin. Signal Name. Function. FunctionInput For Vertical. Synchronize SignalSynchronize SignalWhite Balance Adjustment. JudgementOutputTransformerBefore replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product throughRef. No. Part No. Ref. No. Note:Note 1: Purity and Convergence Adjustments must beRefer to Electrical Adjustment Instructions. Note 2: Please confirm CRT Type No. on the CRT. Warning Label which is located on the CRT. Then SeePlease refer this CRT, Deflection Yoke combinationV501: CRT Type No. V501: CRT Part No. DY551: Deflection. Yoke Part No.CRT Type No. CRT Warning LabelBefore replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product throughPart No.Part No.Ref. No. Ref.

No.Description. Ref. No.DescriptionDescription. ZENER DIODE MTZJT-7736B orDescription. Part No.Description. TRANSISTOR 2SC2785(H) orTRANSISTOR 2SB892(S) or. Part No.Part No.Part No.Description. CEMENT RESISTOR 5W J 1.2 ? orPart No.Description. Part No.DescriptionPart No.Description. Page Count: 50 The service proce dures recomm ended by Funai and de- scribed in this service ma n ual are effective methods of performin g service operations. Some of these serv ice speci al tools should be used when and as recommended. It is important to note t hat this service manual contains various CAUTIONS and NOTIC ES which shou ld be carefully read i n order to mi nimize the ri sk of personal in jury to servic e personnel. The possi bility exi sts that improper service methods may dam age the equipment. It also is important to un der- stand that these CAUTIONS and NOTICES ARE N OT EXHAUSTIVE. Funai could not possibly know, evaluate and advice the servi ce trade of all con- ceivable ways in which service might be done o r of the possible hazardous consequences of each way. Consequently, Funai has not undertaken any such broad evaluation. Accordingly, a serv icer who uses a servic e proce- dure or tool which is not recommended by Funai must first use all precau- tions thorough ly so that neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected.Note: Nominal spec ificatio ns repr esen t the desi gn spe cificati ons. Al l units should be abl e to app roxima te these. S ome wi ll exce ed and s ome m ay drop slig htly belo w these specifi cations. Limit s pecif ications repre sent th e abso lute wo rst con dition that st ill m ight be co nsid ered a cceptabl e. In no case shoul d a unit fa il to m eet li mit sp ecifica tions.H owever, in order to ma inta in such c ompli ance, it is equall y import ant to impl ement t he foll owing pr ecautions when a set is bei ng serv iced.

Do not oper- ate this ins trument or per mit it to be operated without all protective devices correctly in- stalled and functioning. Se rvicers who defeat safety featu res or fail to pe rform safety ch ecks may be lia ble for a ny resu lting damag e. b. Be sure tha t there are no c abinet openi ngs thr ough which an adult o r c hild mi ght be able to ins ert th eir fingers and conta ct a hazardous voltage. Place th e instr umen t AC swi tch in the on po sitio n. Connect on e lead of an ohmm eter to the A C plug prongs ti ed togeth er and touc h the other ohm me- ter lead in turn to eac h tuner a ntenna input ex- posed ter minal sc rew and, i f applica ble, to the coaxial conne ctor. If the meas ured re sistanc e is less th an 1.0 m egohm or grea ter tha n 5.2 m ego- hm, an abn ormalit y exists that must be c orrect ed before the i nstrume nt is retur ned to th e custo mer. An y cur rent measur ed must not excee d 0.5 mill i-am pere. Re- verse the ins trum ent power cord pl ug in the out let and repe at the te st. ANY MEASUREMENTS NOT WITHIN THE LIMI TS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURN ING THE I NSTRUM ENT TO THE CU STOMER OR BEFO RE CONN ECTING THE AN TENN A OR ACCE SSO RIES. e. X-Radiation and High Volta ge Limits - Beca use the p icture tube i s the pr imary poten tial sour ce of X-ra diati on i n soli d-st ate TV rece iver s, it i s spe cial- ly con structe d to prohi bit X -radia tion em ission s. For continu ed X-radi ation protec tion, the repla ce- ment pictu re tube mu st be the sa me type as the origin al.An y desi gn alterat ions or addit ions will void the manufa cturer 's warranty and may make yo u, the s er vicer, r espon si ble fo r per son al i njur y or propert y dama ge resu lting t herefrom. 4. Picture Tube Implosion Protection W arning - The pictu re tube in this receiver emp loys integ ral implo sion pro tectio n.

For co ntinue d implo sion pro - tection, rep lace the pictur e tube only with one of the same type nu mber. Do no t remov e, insta ll, or otherwis e hand le the pictur e tube in a ny manne r without first putting on s hatterpr oof goggle s equipp ed wit h side shiel ds. P eople not s o equipp ed must be kept s afely away w hile pic ture tubes ar e hand led. K eep th e pictur e tube away from your bo dy. Do not han dle the picture tu be by its neck. To co nfirm that th e AC power pl ug is inser ted cor rectly, with an AC volt- meter, me asure be tween th e chass is and a known earth gr ound. If a vo ltage read ing in ex cess of 1. 0V is obtai ned, remo ve and r eins ert the A C power plug in the op posit e pola rity an d agai n measur e the voltag e potential between the chassis and a known earth groun d. b. Some TV recei ver cha ssis no rmally have 85V AC(RMS) betwee n chas sis and ea rth gr ound re- gardl ess of the AC pl ug pol arity. This ch assi s can be safet y-ser vice d only with an iso lation tr ansfo rm- er inserted in the powe r line between the recei ver and the A C pow er sour ce, fo r both per sonnel and test equi pment p rotection. c. Some T V rec eiver c hassis have a second ary ground s ystem in add ition to the main ch assis ground. This seco ndary g round syste m is not iso - lated fr om the AC po wer lin e. The tw o gro und sys - tems ar e electr ically separa ted by ins ulation materia l that mus t not be defeated or altere d. 6. Observe origina l lead dr ess. The pr oduct's s afety i s under re- view co ntinuou sly and new i nstruc tions a re iss ued whenever approp riate. P rior to shipm ent from the fact ory, our pr oduct s are st rict ly in spect ed to co n- firm the y comply with the recogni zed pro duct safe - ty and el ectrical c odes of th e count ries in which they are to be sold. However, i n orde r to mainta in such c ompl iance, it is equal ly impo rtant to im ple- ment the fol lowin g precaut ions wh en a se t is being servic ed.

T hese must als o be replaced o nly wi th speci fied rep lacem ents. Example s: RF c onverte rs, RF cable s, nois e block - ing capa citors, and no ise b locking filters, etc. C. Use specif ied in ternal wiring. Note espe ciall y: 1) Wir es covere d with PVC tubing 2) Dou ble insu lated wi res 3) Hig h voltage leads D. Use spe cified insul ating materi als for haz ardou s live parts. When replac ing th e trans - former, follow the se steps c arefu lly an d precis ely to pr even t sh ock h azar ds. Replacem ent procedu re 1) Remove the old c onnector by cutting the wire s at a point c lose to th e conn ector. Important: Do not re- use a connec tor (disc ard it). 2) Strip about 1 5 mm of the insulati on from the ends of the wir es. If the wire s are s tranded, twist t he strands to avoid frayed c onduc tors. 3) Align the lengths of the wires to be connected. In- sert the wires f ully int o the conn ector. 4) Use the crimping too l to crimp the met al slee ve at the cente r posit ion. B e sure to crimp fully to the complet e closur e of the to ol. L. When c onnectin g or disco nnecting the i ntern al connec tors, first, disc onnec t the AC plug from the AC su pply outl et. Obs erve tha t screws, parts and wi res h ave b een r eturned to or igina l posi - tions. Af terwards, perform the fol lowing tests and con - firm the specifi ed val ues in or der to v erify c ompli ance with saf ety stand ards. 1. C learanc e Di stanc e When r epla cing pr imary circ uit co mponen ts, c onfir m speci fied clea rance di stanc e (d) and (d') betwe en sol- dered terminal s, an d betwee n ter minal s and surround - ing meta llic parts. ( See Fig. 1 ) Table 1: Ratin gs for se lected are a Note: This tab le is unoffi cial and for referen ce only. Be sure to confi rm the pr ecise value s. 2.

Leakage Current Te st Confirm the spec ified (or lo wer) lea kage cur rent be - tween B (ear th ground, pow er cord plu g prongs) and extern ally exp osed acc essibl e parts (R F termin als, antenna termi nals, v ideo and audio inpu t and output termin als, m icroph one jac ks, ear phone jack s, etc.) is lower than o r equal to the s pecified val ue in th e tabl e bel ow. Measuring Method: (Power ON) Insert load Z b etween B (earth ground, p ower cor d plug pro ngs) and exposed acc essible parts. Us e an AC volt meter to measur e across both ter minals of load Z. See Fi g. 2 and fol lowin g table. Table 2: Leakag e curr ent ra tings for select ed area s Note: This table i s uno fficial and for r eference only. Be s ure to co nfirm the precis e val ues.T he outp ut pin of th e 3 pi n Regul ator ICs i s in dicat- ed as shown. b. For othe r ICs, pi n 1 and ever y fifth pin are in dicat - ed as shown. c. The 1st pin of ev ery mal e conne ctor is i ndicated as shown. Then remove (gl ue wil l be melted ). (Fig. S -1-6) (4) Release the fl at pac k-IC from the CBA us ing twee- zers. (Fig. S-1-6) Caution: 1. Do not supply hot air to the ch ip parts ar ound the flat pack-IC for over 6 seconds bec ause dam age to the chip pa rts may o ccur. Put ma skin g tape around the flat pack- IC to protect oth er parts fr om dama ge. (Fi g. S- 1-2) 2. The fla t pack- IC on th e CBA is affixed w ith gl ue, so be car eful no t to break or dama ge the foil o f each pin or the sol der la nds u nder the IC whe n remov - ing it. Top View Out In Bottom View Input 5 10 Pin 1 Pin 1 Fig. S-1-1 Hot-air Flat P ac k-IC Desoldering Machine CBA Flat P ac k-IC T weez ers Masking T ape Fig. S-1-2 W hen yo u use sol der flux whi ch is ap plied to all pins of the fla t pack -IC, you can remove i t eas ily. (F ig. S-1 -3) (2) Lift each le ad of the flat pack-IC upwar d one by one, usi ng a shar p pi n or wir e to whi ch solde r wi ll not adhere (iron wire).

When he ating the pins, use a fine tip solde ring iron or a hot air des olderin g ma- chin e.(Fig. S-1-4) (3) Bottom of t he flat pack-IC is fixe d with g lue to the CBA; when remov ing e ntire flat pack-I C, firs t apply sold ering ir on to cente r of the f lat pac k-IC an d he at up. Then r emove ( glue will be mel ted). (Fig. S-1-6 ) (4) Release th e flat pack -IC from the CBA us ing twee - zers. (Fig. S -1-6) With Iron Wi re: (1) Using des olderin g braid, r emove the solder from all pins of the flat pack -IC. Then remove (gl ue wil l be melted ). (Fig. S -1-6) (5) Release the fl at pac k-IC from the CBA us ing twee- zers. (Fig. S-1-6) Not e: When us ing a solde ring iron, c are m ust be taken to ensu re that the flat pa ck-IC is not being held by glue. Wh en the fl at pac k-IC is remove d from the CBA, handl e it gentl y becaus e it may be damaged if forc e is appl ied. Flat P ac k-IC Desoldering Braid Soldering Iron Fig. S-1-3 Fine Tip Soldering Iron Shar p Pin Fig. S-1-4 T o Solid Mounting P oint Soldering Iron Iron Wire or Hot Air Blower Fig. S-1-5 Fine Tip Soldering Iron CBA Flat P ac k-IC T weez ers Fig. S-1-6 Be sure that none of the pins have s older b ridges. Instruc tions for Hand lin g Semiconductors Elect rostatic breakdow n of the sem iconduc tors m ay occur du e to a pot ential differenc e cause d by elec tro- static charge duri ng unpa cking or repai r work. 1. Ground for Human Body Be su re to wear a groundi ng ban d (1M ? ) th at is pr op- erly grounded to remo ve any static e lectric ity th at may be char ged on th e body. 2. Ground for Workbench Be su re to place a conduc tive sheet or copp er pl ate with pr oper gr oundin g (1M ? ) on the workbench or other s urface, where the semicon ductors are to be place d. Beca use the static elec tricity ch arge o n cloth - ing wi ll n ot esca pe thr ough the body gro unding ba nd, be ca reful to avoid co ntacti ng semicon ducto rs with your clo thi ng.

S-1-8 CBA CBA Grounding Band Conductive Sheet or Copper Plate 1M ? 1M ? When r eassem bling, follow the steps in reve rs e orde r. Bend, rou te and dres s the cables as they wer e. Caution ! When re moving the CRT, be su re to disc harge t he Anode Lea d of the CRT wi th the CRT Ground Wire before re moving th e Anod e Cap. 2. Disassembly Method v v vvv (1) (2) (3) (4) (5) Not e: (1) Order of steps i n procedu re. Wh en reass embling, follow the st eps in re verse o rder. These n umbers are also u sed as th e Identi fication (location) No.Referen ce Notes in the Table 1. Removal of the Rear Cabine t. Remove screws 5(S-1) a nd (S-3) th en slide the Rear Cabinet bac k- ward. 2. Rem oval of the C RT CB A. Disc onnec t CN501 t hen pull the CRT CB A backward. 3. Rem oval of th e Main CBA. D isconne ct CN571 on the Main CBA the n slide the Mai n CBA backwar d. Caut io n ! Dischar ge the Anode Lead of the CRT with the CRT Grou nd Wire before r emoving the Ano de Cap. 4. Rem oval o f the CRT.Also, do not atte mpt thes e adj ustments unless t he proper equipm ent is av aila ble. SCREWS REMOTE CONTROL UNIT Fig. 1-1 J 1 Fig. 1-2 REMOTE CONTROL CBA Test Point Adj.Symptom of Misadjustment. If H f 0 adjustm ent is in correc t, skew di stortio n will app ear on the scree n. Note: R583 --- Main CBA Use Se rvice remote control unit. 1. Co nnec t Frequen cy Cou nter t o R583 and gr ound. 2. Se t the unit t o the VIDEO mode which i s loc ated b e- fore CH2 and no in put is ne cess ary. Note: Use Servic e remote contr ol unit. 1. Discon nect t he RF input and set the unit t o Channel 4. 2. Ente r th e Serv ic e mode. (Se e Pa ge 5- 1) 3. Th e Auto VCO adju stment is star ted. 4. If the di spla y color is chan ged from r ed to gr een, this adjus tment i s done. 5. Tur n the power off and on again, us ing the main power butt on on th e TV uni t. 6. AGC Adjustment Purpose: Set AGC (A uto Ga in Cont rol) Le vel.ALDERCOM.COM/images/3g3mv-a4055-manual.pdf