Emerson EWL20S5 Instrukcja Obsługi

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SERVICE MANUAL
This service manual is for the EWL20S5 version
B model, which is different from the original
EWL20S5 and the EWL20S5 version A model.
For EWL20S5 version B model, a suffix “B” is
printed on the rating label on the back of the
unit. Refer to the rating label illustration at right.
LCD COLOR TV
Rating Label
Suffix "B"
20 COLOR LCD TELEVISION
EWL20S5
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Podsumowanie treści

Strona 1 - SERVICE MANUAL

SERVICE MANUALThis service manual is for the EWL20S5 version B model, which is different from the original EWL20S5 and the EWL20S5 version A model. Fo

Strona 2 - IMPORTANT SAFETY NOTICE

3-3 TVN_SNWith Iron Wire:1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to

Strona 3 - SPECIFICATIONS

3-4 TVN_SNInstructions for Handling Semi-conductorsElectrostatic breakdown of the semi-conductors may occur due to a potential difference caused by el

Strona 4 - IMPORTANT SAFETY PRECAUTIONS

4-1 L2601DCCABINET DISASSEMBLY INSTRUCTIONS1. Disassembly FlowchartThis flowchart indicates the disassembly steps for the cabinet parts, and the CBA i

Strona 5

4-2 L2601DCFig. D1[1] Rear CabinetS-1S-3S-1S-1S-1S-1S-2S-1S-1S-1Fig. D2S-9S-9S-11S-11Speaker HoldersS-10S-8S-8S-8S-8S-8S-8S-6S-6S-5S-4S-7S-7S-7S-7S-4S

Strona 6 - Precautions during Servicing

4-3 L2601DCTV Cable Wiring DiagramFig. D3IR Sensor CBATo LCD ModuleCN310To SpeakerFunction CBACLN104CN801To SpeakerCN1202CLN105CN1207CN1206CN1205To LC

Strona 7 - Safety Check after Servicing

5-1 L2601EAELECTRICAL ADJUSTMENT INSTRUCTIONSGeneral Note: “CBA” is abbreviation for “Circuit Board Assembly.”Note: Electrical adjustments are require

Strona 8 - STANDARD NOTES FOR SERVICING

5-2 L2601EA2. Flicker Adjustment1. Enter the Service mode. (See page 5-1.)2. Press [2] button on the remote control unit. The following screen appears

Strona 9

5-3 L2601EAThe following adjustment normally are not attempted in the field. Only when replacing the LCD Panel then adjust as a preparation.3. White B

Strona 10 - Example :

6-1 L3103INTHOW TO INITIALIZE THE LCD TELEVISIONHow to initialize the LCD television:1. Turn the power on. (Use main power on the TV unit.)2. To enter

Strona 11 - <Correct>

7-1BLOCK DIAGRAMSSystem Control Block DiagramL2601BLSFUNCTION CBAKEY-IN-122CLN104KEY SWITCHKEY-IN-211BACKLIGHT-ADJKEY SWITCHIC1202 (TV MICRO CONTROLLE

Strona 12 - 2. Disassembly Method

IMPORTANT SAFETY NOTICEProper service and repair is important to the safe, reliable operation of all Funai Equipment. The service procedures recommend

Strona 13 - 4-2 L2601DC

7-2 L2601BLIFIF/Video Block DiagramTO AUDIOBLOCK DIAGRAMTOLCD BLOCKDIAGRAMTOLCD BLOCKDIAGRAMINPUT-0(INV)INPUT-1(INV)SAWFILTERTU1SF11IFAGCSDASCL1732SIF

Strona 14 - TV Cable Wiring Diagram

7-3Audio Block DiagramL2601BLAMAIN CBAAUDIO SIGNALAUDIO-MUTEVOLUMETO SYSTEM CONTROL BLOCKDIAGRAMINPUT-0(INV)INPUT-1(INV)SCLSDAIC852 (INPUT SELECT)SW C

Strona 15 - Test Equipment Required

7-4LCD Block DiagramL2601BLLCDCN1206TOIF/VIDEOBLOCKDIAGRAMOR(0)24OR(1)23MAIN CBAVIDEO SIGNALCVBSS-VIDEO-CIC1202 (LCD DRIVE / SIGNAL PROCESS)705275S-VI

Strona 16 - FLASH (Go and Off)

7-5Power Supply Block DiagramL2601BLP4A/125VF6014A/125VLINEFILTERL601AC601AC CORDBRIDGERECTIFIERD605 - D608HOT COLDT601121316141144312IC601ERRORVOLTAG

Strona 17 - INPUT: WHITE 80%

7-6LCD Backlight Block DiagramL2601BLLBCURRENTCONTROLSWITCHQ321Q324T301CN301LCD MODULEINVERTER CBABACKLIGHTBACKLIGHTBACKLIGHTOVER VOLTAGEPROTECTORQ322

Strona 18

8-1 LC4N_SCSCHEMATIC DIAGRAMS / CBA'S AND TEST POINTSStandard NotesMany electrical and mechanical parts in this chassis have special characterist

Strona 19 - BLOCK DIAGRAMS

8-2 LC4N_SCLIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES:1. CAUTION:CAUTION: FOR CONTINUED PROTECTION AGAI

Strona 20 - IF/Video Block Diagram

8-3Main 1/5 Schematic DiagramL2601SCM1

Strona 21 - Audio Block Diagram

8-4L2601SCM2Main 2/5 Schematic Diagram

Strona 22 - LCD Block Diagram

8-5Main 3/5 Schematic DiagramL2601SCM3

Strona 23 - HOT COLD

1-1 L2500SPSPECIFICATIONS< TUNER >ANT. Input ---------------------- 75 ohm Unbal., F typeReference Level--------------- 20 Vp-p (LCD Green Catho

Strona 24 - LCD Backlight Block Diagram

8-6L2601SCM4 Main 4/5 Schematic Diagram

Strona 25 - Standard Notes

8-7L2601SCM5 Main 5/5 Schematic DiagramCAUTION !Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.If Main Fuse (F60

Strona 26 - Indicates that the voltage

8-8L2601SCF Function Schematic Diagram

Strona 27 - Main 1/5 Schematic Diagram

8-9L2601SCIRIR Sensor Schematic Diagram

Strona 28 - Main 2/5 Schematic Diagram

8-10L2601SCI Inverter Schematic Diagram

Strona 29 - Main 3/5 Schematic Diagram

8-11PIN 75 OFIC1202WF8PIN 77 OFIC1202WF10PIN 70 OFIC1202WF7PIN 62 OFIC1202WF12PIN 57 OFIC1202WF11PIN52 OFIC1202WF9BL2500F01011-1Main CBA Top ViewCAUTI

Strona 30 - Main 4/5 Schematic Diagram

8-12PIN 27 OFCN1206WF3PIN 28 OFCN1206WF4PIN 26 OFCN1206WF5PIN 2 OFCN1206WF1PIN 14 OFIC801WF6PIN 7 OFCN1205WF2Main CBA Bottom ViewBL2500F01011-1For co

Strona 31 - Main 5/5 Schematic Diagram

8-13Function CBA Top ViewFunction CBA Bottom ViewBL2601F01031-1IR Sensor CBATop ViewIR Sensor CBABottom ViewBL2601F01031-2

Strona 32 - Function Schematic Diagram

8-14Inverter CBA Top ViewBL2500F01021Inverter CBA Bottom View

Strona 33 - IR Sensor Schematic Diagram

WAVEFORMSL2500WF9-11DIV: 1.0V 10 s1DIV: 1.0V 20sPin 2 of CN1206WF1 1DIV: 1.0V 10sPin 26 of CN1206WF5Input: NTSC Color Bar Signal (with 1kHz Audi

Strona 34 - Inverter Schematic Diagram

2-1 LTVN_ISPIMPORTANT SAFETY PRECAUTIONSPrior to shipment from the factory, our products are strictly inspected for recognized product safety and elec

Strona 35 - Main CBA Top View

WIRING DIAGRAML2601WI10-1LCD MODULETU1 TUNER UNITVIDEO -Y INAUDIO1(R)-INAUDIO2(L)-IN S-VIDEO INVIDEO -Pb/Cb INVIDEO -Pr/Cr INVIDEO1-INAUDIO1(L)-IN

Strona 36 - Main CBA Bottom View

11-1 L2601CEXEXPLODED VIEWSCabinetCL1207CL1206CL1205B22B7A6A1B6B6B6B6A2A3L22L22B4LCD1L9L14L14L14L14L16L16L14L14A9L9L23L9L9L9L9L9L9A4B3B12B21B21B21L14L

Strona 37 - BL2601F01031-2

11-2 L2601PEXPackingS1FRONTS2S5S4TapePacking TapePacking TapePacking TapeS3S3S6X1X5X3Some Ref. Numbers are not in sequence.X2Packing Tape

Strona 38 - Inverter CBA Bottom View

20060428 12-1 L2601CAMECHANICAL PARTS LISTPRODUCT SAFETY NOTE: Products marked with a # have special characteristics important to safety. Before repla

Strona 39 - WAVEFORMS

20060428 13-1 L2601ELELECTRICAL PARTS LISTPRODUCT SAFETY NOTE: Products marked with a # have special characteristics important to safety. Before repla

Strona 40 - WIRING DIAGRAM

20060428 13-2 L2601ELC819 CHIP CERAMIC CAP. B K 2200pF/50V CHD1JK30B222C820 CHIP CERAMIC CAP. B K 2200pF/50V CHD1JK30B222C853 ELECTROLYTIC CAP. 2.2µF/

Strona 41 - EXPLODED VIEWS

20060428 13-3 L2601ELD624# ZENER DIODE MTZJT-7733B QDTB00MTZJ33D631# SCHOTTKY BARRIER DIODE ERC84-009 QDLZERC84009D632# DIODE FR154 NDLZ000FR154D633#

Strona 42 - 11-2 L2601PEX

20060428 13-4 L2601ELR414 CARBON RES. 1/4W J 680 Ω RCX4JATZ0681R415 CARBON RES. 1/4W J 33 Ω RCX4JATZ0330R416 CARBON RES. 1/4W J 33 Ω RCX4JATZ0330R417

Strona 43 - MECHANICAL PARTS LIST

20060428 13-5 L2601ELR822 CARBON RES. 1/4W J 22k Ω RCX4JATZ0223R823 CHIP RES. 1/10W J 22k Ω RRXAJR5Z0223R824 CHIP RES. 1/10W J 22k Ω RRXAJR5Z0223R825

Strona 44 - ELECTRICAL PARTS LIST

20060428 13-6 L2601ELINVERTER CBAR1363 CHIP RES. 1/10W J 10k Ω RRXAJR5Z0103R1364 CHIP RES. 1/10W J 10k Ω RRXAJR5Z0103R1365 CHIP RES.(1608) 1/10W 0 Ω R

Strona 45 - 20060428 13-2 L2601EL

2-2 LTVN_ISP3. Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this TV receiver. Design alterations and addi

Strona 46 - 20060428 13-3 L2601EL

20060428 13-7 L2601ELANALOG KEY CBAFUNCTION CBAD361 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133D362 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133D363 SWITCH

Strona 47 - 20060428 13-4 L2601EL

20060428 13-8 L2601ELIR SENSOR CBASW62 TACT SWITCH SKQSAB SST0101AL038SW63 TACT SWITCH SKQSAB SST0101AL038SW64 TACT SWITCH SKQSAB SST0101AL038SW65 TAC

Strona 48 - 20060428 13-5 L2601EL

EWL20S5L2601UB2006-05-29

Strona 49 - INVERTER CBA

SERVICE MANUALModel EWL20S5 has non-A, A, B and C version types. For the C version model, suffix C is printed to the model number as EWL20S5 C on the

Strona 50 - ANALOG KEY CBA

Different parts from the B version model (EWL20S5)Ref. No. Description Part No.MECHANICAL PARTSA6# RATING LABEL L2621UB ----------LCD1 LCD MODULE ASSE

Strona 51 - IR SENSOR CBA

2-3 LTVN_ISPPrecautions during ServicingA. Parts identified by the # symbol are critical for safety.Replace only with part number specified.B. In addi

Strona 52 - 2006-05-29

2-4 LTVN_ISPSafety Check after ServicingExamine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and

Strona 53

3-1 TVN_SNSTANDARD NOTES FOR SERVICINGCircuit Board Indications1. The output pin of the 3 pin Regulator ICs is indicated as shown.2. For other ICs, pi

Strona 54 - 2006-07-03

3-2 TVN_SN3. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the

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