Emerson EWF2006, Service Manual

Page 1: ...SERVICE MANUAL 20 PURE FLAT COLOR TELEVISION EWF2006 ...

Page 2: ...ossibly know evaluate and advice the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way Consequently Funai has not undertaken any such broad evaluation Accordingly 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 ...

Page 3: ...eet limit specifications Description Condition Unit Nominal Limit 1 Intermediate Freq Picture Sound MHz MHz 45 75 41 25 2 Peak Picture Sens VHF CATV UHF dBµV dBµV dBµV 15 15 15 30 30 30 3 AFT Pull In Range 10 mV input MHz 2 0 0 7 Description Condition Unit Nominal Limit 1 Deflection Freq Horizontal Vertical kHz Hz 15 734 60 2 Linearity Horizontal Vertical 15 10 3 Over Scan 10 4 High Voltage kV 29 ...

Page 4: ...e instrument AC switch in the on position Connect one lead of an ohmmeter to the AC plug prongs tied together and touch the other ohmmeter lead in turn to each tuner antenna input exposed terminal screw and if applicable to the coaxial connector If the measured resistance is less than 1 0 megohm or greater than 5 2 megohm an abnormality exists that must be corrected before the instrument is return...

Page 5: ...cted directly to one conductor of the AC power cord and maybe safety serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source To confirm that the AC power plug is inserted correctly with an AC voltmeter measure between the chassis and a known earth ground If a voltage reading in excess of 1 0V is obta...

Page 6: ...t producing parts heat sinks oxide metal film resistors fusible resistors etc G Check that replaced wires do not contact sharp edged or pointed parts H When a power cord has been replaced check that 5 6 kg of force in any direction will not loosen it 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 typ...

Page 7: ...exposed accessible parts RF terminals antenna terminals video and audio input and output terminals microphone jacks earphone jacks etc is lower than or equal to the specified value in the table below Measuring Method Power ON Insert load Z between B earth ground power cord plug prongs and exposed accessible parts Use an AC voltmeter to measure across both terminals of load Z See Fig 2 and followin...

Page 8: ...the Flat Pack IC about 5 to 6 seconds Fig S 1 1 2 Remove the flat pack IC with tweezers while applying the hot air 3 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted Fig S 1 6 4 Release the flat pack IC from the CBA using tweezers Fig S 1 6 CAUTION 1 The Fl...

Page 9: ...y one using a sharp pin or wire to which solder will not adhere iron wire When heating the pins use a fine tip soldering iron or a hot air desoldering machine Fig S 1 4 3 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted Fig S 1 6 4 Release the flat pack IC ...

Page 10: ...s Fig S 1 6 Note When using a soldering iron care must be taken to ensure that the flat pack IC is not being held by glue When the flat pack IC is removed from the CBA handle it gently because it may be damaged if force is applied 2 Installation 1 Using desoldering braid remove the solder from the foil of each pin of the flat pack IC on the CBA so you can install a replacement flat pack IC more ea...

Page 11: ...d to remove any static electricity that may be charged on the body 2 Ground for Workbench Be sure to place a conductive sheet or copper plate with proper grounding 1 MΩ on the workbench or other surface where the semi conductors are to be placed Because the static electricity charge on clothing will not escape through the body grounding band be careful to avoid contacting semi conductors with your...

Page 12: ...ed unplugged unclamped or desoldered P Spring L Locking Tab S Screw CN Connector Unhook Unlock Release Unplug or Desolder e g 2 S 2 two Screws S 2 2 L 2 two Locking Tabs L 2 5 Refer to the following Reference Notes in the Table Reference Notes in the Table 1 Removal of the Rear Cabinet Remove screws 7 S 1 2 S 2 and S 4 then slide the Rear Cabinet backward 2 Removal of the CRT CBA Disconnect CN1501...

Page 13: ...4 2 L3314DC S 1 S 1 S 1 S 1 S 4 S 2 1 Rear Cabinet Fig D1 S 1 S 1 S 1 S 1 S 2 S 4 S 1 1 Rear Cabinet Fig D2 3 Main CBA Fig D3 2 CRT CBA 4 CRT Anode Cap S 3 S 3 S 3 S 3 Fig D4 ...

Page 14: ...ring Diagram ANODE FLYBACK TRANSFORMER T571 AC601 AC CORD CN801 CLN801 SP801 CLN802 SP802 CN802 CN691 MAIN CBA DG691 DEGAUSSING COIL TU11 TUNER WH301A WH501A CN571 JK1501 WH501B WH301B TO CRT GROUND CN1501 FOCUS SCREEN Fig D5 ...

Page 15: ...ormal remote control unit Part No NE116UE Remove 3 Screws from the back lid Fig 1 1 2 Add J1 Jumper Wire to the remote control CBA Fig 1 2 How to enter the service mode Service mode 1 Use the service remote control unit 2 Turn the power on Use main power on the TV unit 3 Press SLEEP button on the service remote control unit Version of micro computer will display on the CRT Ex 058 0 06 4 Check the ...

Page 16: ...nit so that the value of CONTRAST CNT becomes 84 CLR 1 Press MENU button on the service remote control unit Then select COLOR CLR display 2 Press CH o p buttons on the service remote control unit so that the value of COLOR CLR becomes 58 S CLR 1 Press MENU button on the service remote control unit Then select S COLOR S CLR display 2 Press CH o p buttons on the service remote control unit so that t...

Page 17: ...2 is indicated 5 Press CH o p buttons on the service remote control unit so that display will change 0 and 1 Then choose B S2 0 6 Turn the power off and on again using the main power button on the TV unit 6 Purity Check 1 Enter the Service mode See page 5 1 2 Press 7 button on the remote control unit Each time pressing 7 button on the service remote control unit display changes Red mode Green mode...

Page 18: ... CH o p buttons on the service remote control unit so that the monoscope pattern will be 90 5 of display size and the circle is round 6 Turn the power off and on again Main power button on the TV unit 10 V Position Adjustment Purpose To obtain correct vertical width of screen image Symptom of misadjustment If V Position is incorrect vertical height of image on the screen may not be properly displa...

Page 19: ...ment is done 6 Press 3 button The display will momentarily show CUT OFF B B Blue Adjust the Blue cut off by pressing CH o p buttons When done with steps 4 5 and 6 the horizontal line should be pure white if not then attempt the Cut off adjustment again 13 White Balance Adjustment Purpose To mix red green and blue beams correctly for pure white Symptom of Misadjustment White becomes bluish or reddi...

Page 20: ... SRP cyclically when MENU button is pressed Press CH o p buttons so that the bar is just visible See above figure 3 Turn the power off and on again Main power button on the TV unit 15 Focus Adjustment Purpose Set the optimum Focus Symptom of Misadjustment If Focus Adjustment is incorrect blurred images are shown on the display Note Focus VR FBT Main CBA FBT Fly Back Transformer 1 Operate the unit ...

Page 21: ...rs may have color edges 1 Loosen the Ring Lock and align red with blue dots or Crosshatch at the center of the screen by rotating RB C P Magnets See Fig 7 2 Align red blue with green dots at the center of the screen by rotating RB G C P Magnet See Fig 8 3 Paintlock the C P Magnets after adjustment 4 Remove the DY Wedges and slightly tilt the Deflection Yoke horizontally and vertically to obtain th...

Page 22: ...er to How to enter the Service mode on page 5 1 4 Press VOL p button on the service remote control unit twice and confirm that OSD indication is 7F FF If needed set it to become 7F FF by pressing CH o p buttons on the service remote control unit 5 Confirm that OSD indication on the four corners on TV screen changes from on and off light indication to red by pressing a DISPLAY button It takes one o...

Page 23: ...CTRL 5V CTRL2 8V CTRL DG ON H 5V CTRL 5V CTRL2 8V CTRL TO POWER SUPPLY BLOCK TO CRT H V BLOCK PROTECT 2 PROTECT 1 PROTECT 3 P ON H KEY IN2 KEY IN1 RCV IN RCV101 IC151 MEMORY SCL 6 SDA 5 VOLUME 67 68 76 79 69 66 70 PROTECT 2 PROTECT 1 7 CS 72 I2C OPEN IC111 TV MICON VIDEO AUDIO CHROMA DEFLECTION TO IF VIDEO BLOCK TO AUDIO BLOCK VOLUME A MUTE MAIN CBA Q161 INPUT1 INPUT0 Q131 SCL SDA TO AUDIO BLOCK 5...

Page 24: ...CONT OSD SW CONTRAST BRIGHTNESS RGB DRIVE CUT OFF H V BLK LPF 14 29 11 61 53 46 45 38 37 ACL H DRIVE FBP IN RAMP OUT V RAMP F B 24 SAW FILTER VIF AMP VIDEO DET VCO 4 5MHz FILTER IF AGC DET EQ AMP RF AGC AMP AFT SIF AMP 16 11 13 18 17 4 7 8 1 TU11 SF11 IF AGC SDA SCL XTAL IN 1 7 3 2 14 26 SIF 52 51 50 MAIN CBA VIDEO SIGNAL RF IF SIGNAL AUDIO SIGNAL WF16 WF2 TO AUDIO BLOCK IC111 TV MICON VIDEO AUDIO...

Page 25: ... AGC OFFSET CANCEL L R FILTER L R SAP SW SAP FILTER I2C DECORDER SAP DEMOD SAP OUT FILTER 29 30 TO IF VIDEO BLOCK TUNER REAR FRONT TUNER REAR FRONT L CH R CH 21 27 24 IC431 MTS SAP AUDIO SIGNAL PROCESS AUDIO L IN REAR JK711 SIF JK711 AUDIO R IN REAR JK702 AUDIO L IN FRONT JK703 AUDIO R IN FRONT OFFSET CANCEL 11 IC801 AUDIO AMP 7 VOLUME 14 AMP AMP MUTE STANDBY CONTROL 3 8 R CH L CH 2 Q811 RF Q801 5...

Page 26: ...RT FOCUS SCREEN GND JK1501 CN1501 WH501B WH501A VIDEO SIGNAL CN571 H OUTPUT H DRIVE B PROTECT 3 DEF B AMP 7 1 6 3 PULSE UP THERMAL PROTECTION 5 WF7 WF8 WF11 WF12 WF9 WF10 WF3 WF15 WF4 WF14 WF5 WF13 RED AMP PROTECT 2 RED 3 GREEN 4 BLUE 5 HEATER 3 3 200V 1 1 PROTECT 1 TO POWER SUPPLY BLOCK TO IF VIDEO BLOCK TO IF VIDEO BLOCK TO SYSTEM CONTROL BLOCK TO IF VIDEO BLOCK WH301A T571 F B T FOCUS VR SCREEN...

Page 27: ...TCHING AL 9V Q321 9V SWITCHING Q674 SWITCHING P ON ON P ON H TO PIN79 OF IC111 HOT CIRCUIT BE CAREFUL 1 2 FEED BACK SWITCHING DG ON ON 9 RF TO AUDIO BLOCK PROTECT 4 Q631 OVER VOLTAGE PROTECT TO CRT H V BLOCK CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F601 is blown check to see that all components in the power supply circuit are not defec...

Page 28: ...ings for ordering The correct part number is shown in the parts list and may be slightly different or amended since these drawings were prepared 2 All resistance values are indicated in ohms K 103 M 106 3 Resistor wattages are 1 4W or 1 6W unless otherwise specified 4 All capacitance values are indicated in µF P 10 6 µF 5 All voltages are DC voltages unless otherwise specified Note of Capacitors M...

Page 29: ... the drawings were prepared 2 To maintain original function and reliability of repaired units use only original replacement parts which are listed with their part numbers in the parts list section of the service manual 4 Voltage indications on the schematics are as shown below Plug the TV power cord into a standard AC outlet 5 How to read converged lines 6 Test Point Information 2 3 1 5 0 3 0 5 0 ...

Page 30: ...8 3 Main 1 4 Schematic Diagram L3314SCM1 ...

Page 31: ...8 4 L3314SCM2 Main 2 4 Schematic Diagram ...

Page 32: ...or continued protection against risk of fire replace only with same type 4 A 125V fuse CAUTION ATTENTION Utiliser un fusible de rechange de même type de 4A 125V 4A 125V NOTE The voltage for parts in hot circuit is measured using hot GND as a common terminal 1 NOTE These components C643 C642 JS642 can be used in any models However you cannot mix components under Group A with the ones under Group B ...

Page 33: ...8 6 L3314SCM4 Main 4 4 CRT Schematic Diagram ...

Page 34: ...ION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F601 is blown check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail For continued protection against risk of fire replace only with same type 4 A ...

Page 35: ...ply circuit a variable isolation transformer is required CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F601 is blown check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail For continued pro...

Page 36: ...8 9 WF15 Q1511 Collector Q1511 Base WF3 WF14 Q1521 Collector Q1521 Base WF4 WF13 Q1531 Collector Q1531 Base WF5 BL3700F01013 2 CRT CBA Top View CRT CBA Bottom View ...

Page 37: ... Signal INITIAL POSITION Unplug unit from AC outlet for at least 5 minutes reconnect to AC outlet and then turn power on Brightness Center Color Center Tint Center Contrast Approx 70 1DIV 0 2V 20ms IC 801 Pin 3 WF6 1DIV 2V 20µs Q 1531 Base WF5 GND 1DIV 10V 20µs Q 572 Collector WF7 GND 1DIV 5V 20µs Q 571 Base WF8 WF1 WF16 Waveforms to be observed at Waveform check points Shown in Schematic Diagram ...

Page 38: ...Center Tint Center Contrast Approx 70 WF1 WF16 Waveforms to be observed at Waveform check points Shown in Schematic Diagram 1DIV 200V 20µs CN 571 Pin 1 WF9 GND 1DIV 5V 20µs WH501A Pin 3 WF10 GND 1DIV 10V 5ms CN 571 Pin 4 WF12 1DIV 20V 20µs Q 1521 Collector WF14 1DIV 20V 20µs Q 1531 Collector WF13 1DIV 20V 20µs Q 1511 Collector WF15 1DIV 0 2V 20µs TU 11 Pin 5 WF16 1DIV 1V 5ms IC 551 Pin 7 WF11 GND ...

Page 39: ...1 CLN501 CLN301 AC601 1 2 3 4 5 1 2 3 4 5 CN571 5 4 3 2 1 WH301B GND RED GREEN BLUE V501 CRT ANODE L CH R CH 1 SP L 2 SP801 SPEAKER CN801 1 SP R 2 SP802 SPEAKER CN802 T571 FBT TU11 TUNER UNIT WH501A WH501B 8V GND RED GREEN BLUE 8V HEATER 3 GND 2 200V 1 GND 2 200V 1 HEATER 3 CLN801 CLN802 SP GND SP GND ...

Page 40: ...ed 37 V RAMP F B Vertical Ramp Feed Back 38 V RAMP OUT Vertical Ramp Output 39 V RAMP CAP Vertical Ramp OSC Capacitor 40 8 7 VREG OUT DC 8 7V Output 41 NU Not Used 42 H VCO F B Horizontal Vco Feed Back 43 AFC FILT Horizontal AFC Filter 44 GND GND 45 FBP IN Flyback Pulse Input 46 H OUT Horizontal Pulse Output 47 VCC Vcc 48 VCC Vcc 49 VCC Vcc 50 R OUT Red Signal Output 51 G OUT Green Signal Output 5...

Page 41: ...11 2 L3300PIN 77 NU Not Used 78 NU Not Used 79 P ON H Power On Signal at High 80 INPUT 1 Input Select 1 Signal Output Pin No Signal Name Function ...

Page 42: ...B 5 B 5 B 2 B 2 B 11 B 11 B 1 SP801 SP802 L 13 L 13 A 4 A 2 L1 L1 B2 Scotch Tape 880 Scotch Tape 880 V501 CLN551 DG691 DY551 CRT CBA MAIN CBA AC601 B 3 B 6 B 6 PB6 PB6 PB4 V501 2 V501 1 DY551 Details for DY551 and surrounding parts SHINWHA TAPE SGT 730 WHITE SHINWHA TAPE SGT 730 BLACK CLN802 CLN801 ...

Page 43: ...12 2 L3314PEX Packing S 5 S 1 Tape X 5 X 2 X 1 FRONT X 3 S 2 S 3 S 6 S 4 Packing tape ...

Page 44: ... ASSEMBLY WX1L9200 001 CLN802 WIRE ASSEMBLY SPEAKER WIRE 180MM WX1L1131 001 DG691 DEGAUSSING COIL F 054 LLBH00ZTM054 DY551 DEFLECTION YOKE LLBY00ZSY010 LLBY00ZSY010 L 8 SCREW P TIGHT 4X18 BIND HEAD GBJP4180 L 9 SCREW TAPPING M4X14 DBT14140 L 10 SCREW P TIGHT 3X12 BIND HEAD BLK GBHP3120 L 13 SCREW P TIGHT 3X14 BIND HEAD GBJP3140 PB4 CHASSIS NO LABEL L1520P1 PB6 CLOTH 10X65XT0 3 1EM420328 SP801 SPEA...

Page 45: ...52 CERAMIC CAP AX B K 220pF 50V CCA1JKT0B221 C301 CHIP CERAMIC CAP CH J 120pF 50V CHD1JJBCH121 C302 ELECTROLYTIC CAP 1µF 50V M CE1JMASDL1R0 C303 CERAMIC CAP AX B 0 015µF 50V CCK1JKT0B153 C306 ELECTROLYTIC CAP 100µF 10V M CE1AMASDL101 C309 ELECTROLYTIC CAP 0 1µF 50V M CE1JMASDL0R1 C322 ELECTROLYTIC CAP 0 47µF 50V M CE1JMASDLR47 C324 ELECTROLYTIC CAP 10µF 50V M CE1JMASDL100 C325 CERAMIC CAP AX SL J ...

Page 46: ...ASDL1R0 C809 ELECTROLYTIC CAP 1µF 50V M CE1JMASDL1R0 C811 ELECTROLYTIC CAP 470µF 16V M CE1CMASDL471 C833 ELECTROLYTIC CAP 47µF 16V M CE1CMASDL470 Ref No Description Part No CONNECTORS CN571 CONNECTOR PRINT OSU 5P RTB 1 5 5P LF J3RTC05JG002 CN691 CONNECTOR PRINT OSU 2P RTB 1 5 2P LF J3RTC02JG002 CN801 CONNECTOR PRINT OSU 008283021200000S J383C02UG004 CN802 CONNECTOR PRINT OSU 008283021200000S J383C...

Page 47: ...Ω RCX4JATZ0101 Ref No Description Part No R122 CARBON RES 1 4W J 100 Ω RCX4JATZ0101 R123 CHIP RES 1 10W J 1k Ω RRXAJB5Z0102 R131 CHIP RES 1 10W J 470 Ω RRXAJB5Z0471 R133 CHIP RES 1 10W J 0 Ω RRXAJB5Z0000 R134 CHIP RES 1 10W J 4 7k Ω RRXAJB5Z0472 R135 CHIP RES 1 10W J 2 2k Ω RRXAJB5Z0222 R136 CHIP RES 1 10W J 100k Ω RRXAJB5Z0104 R137 CHIP RES 1 10W J 100 Ω RRXAJB5Z0101 R138 CHIP RES 1 10W J 220k Ω ...

Page 48: ...RES 1 4W J 1k Ω RCX4JATZ0102 R661 CARBON RES 1 4W J 39k Ω RCX4JATZ0393 R662 CARBON RES 1 4W J 1 8k Ω RCX4JATZ0182 Ref No Description Part No R663 CARBON RES 1 4W J 10k Ω RCX4JATZ0103 R664 CARBON RES 1 4W J 1 2k Ω RCX4JATZ0122 R665 CARBON RES 1 4W J 5 6k Ω RCX4JATZ0562 R667 CARBON RES 1 4W J 8 2k Ω RCX4JATZ0822 R668 CARBON RES 1 4W J 8 2k Ω RCX4JATZ0822 R669 CARBON RES 1 4W J 8 2k Ω RCX4JATZ0822 R6...

Page 49: ...NG TRANSFOMER 5704 LTT00CPKT164 TP300 PCB JUMPER D0 6 P10 0 JW10 0T TP601 PCB JUMPER D0 6 P20 0 JW20 0T TU11 TUNER UNIT TEFH9 001A 5M UTUNNTUAL050 VR661 CARBON P O T VZ067TL1 B103 PB F VRCB103HH014 X301 XTAL 3 579545 MHz FXD355LLN003 Ref No Description Part No CRT CBA Consists of the following CAPACITORS C1502 ELECTROLYTIC CAP 47µF 16V M CE1CMASDL470 C1510 CERAMIC CAP B K 1000pF 2KV CCD3DKD0B102 C...

Page 50: ...EWF2006 L3314WQ 2006 04 05 ...