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Emerson EWFG2705, Service Manual

The Emerson EWFG2705 Service Manual is a comprehensive user guide designed to assist you in optimizing the performance of your Emerson EWFG2705 model. Unlock the full potential of your device by downloading this expertly crafted manual for free from our website.

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20050719

14-1

L3821EL

ELECTRICAL PARTS LIST

PRODUCT SAFETY NOTE:

 Products marked with a 

#

 have special characteristics important to safety. 

Before replacing any of these components, read 
carefully the product safety notice in this service 
manual. Don't degrade the safety of the product 
through improper servicing.

NOTES: 

1. Parts that are not assigned part numbers (---------) 

are not available.

2. Tolerance of Capacitors and Resistors are noted 

with the following symbols.

DIGITAL CBA

MMA CBA

MAIN CBA

C.....±0.25%

D.....±0.5%

F.....±1%

G.....±2%

J......±5%

K.....±10%

M.....±20%

N.....±30%

Z.....+80/-20%

Ref. No.

Description

Part No.

DIGITAL CBA

1ESA10823

Ref. No.

Description

Part No.

MMA CBA
Consists of the following:

1ESA10792

MAIN CBA
CRT CBA

----------
----------

Ref. No.

Description

Part No.

MAIN CBA
Consists of the following:

----------

CAPACITORS

C12

ELECTROLYTIC CAP. 100

µ

F/ 10V M

CE1AMASDL101

C13

ELECTROLYTIC CAP. 4.7

µ

F/ 50V M

CE1JMASDL4R7

C14

CHIP CERAMIC CAP.(1608) CH J 100pF/ 50V

CHD1JJ3CH101

C15

CHIP CERAMIC CAP.(1608) CH J 100pF/ 50V

CHD1JJ3CH101

C16

CHIP CERAMIC CAP. F Z 0.01

µ

F/ 50V

CHD1JZ30F103

C31

ELECTROLYTIC CAP. 100

µ

F/ 10V M

CE1AMASDL101

C34

ELECTROLYTIC CAP. 0.47

µ

F/ 50V M

CE1JMASDLR47

C35

CHIP CERAMIC CAP.(1608) CH J 47pF/ 50V

CHD1JJ3CH470

C36

CHIP CERAMIC CAP.(1608) B K 1000pF/ 50V

CHD1JK30B102

C37

ELECTROLYTIC CAP. 1

µ

F/ 50V M

CE1JMASDL1R0

C38

CHIP CERAMIC CAP.(1608) CH J 47pF/ 50V

CHD1JJ3CH470

C39

CHIP CERAMIC CAP. CH D 5pF/ 50V

CHD1JD3CH5R0

C42

CERAMIC CAP.(AX) CH K 2.7pF/ 50V

CCA1JKTCH2R7

C49

ELECTROLYTIC CAP. 4.7

µ

F/ 50V M

CE1JMASDL4R7

C50

CHIP CERAMIC CAP. CH C 3pF/ 50V

CHD1JC3CH3R0

C51

CHIP CERAMIC CAP.(1608) B K 1000pF/ 50V

CHD1JK30B102

C52

CHIP CERAMIC CAP. F Z 0.01

µ

F/ 50V

CHD1JZ30F103

C53

ELECTROLYTIC CAP. 100

µ

F/ 10V M

CE1AMASDL101

C54

CHIP CERAMIC CAP.(1608) B K 1000pF/ 50V

CHD1JK30B102

C55

CHIP CERAMIC CAP. F Z 0.01

µ

F/ 50V

CHD1JZ30F103

C57

CHIP CERAMIC CAP.(1608) B K 0.047

µ

F/ 50V

CHD1JK30B473

C58

CHIP CERAMIC CAP.(1608) B K 0.033

µ

F/ 50V

CHD1JK30B333

C61

CERAMIC CAP.(AX) F Z 0.01

µ

F/ 25V

CCA1EZTFZ103

C62

CHIP CERAMIC CAP.(1608) B K 0.01

µ

F/ 50V

CHD1JK30B103

C301

ELECTROLYTIC CAP. 10

µ

F/ 50V M

CE1JMASDL100

C303

CHIP CERAMIC CAP.(1608) B K 0.01

µ

F/ 50V

CHD1JK30B103

C304

ELECTROLYTIC CAP. 1

µ

F/ 50V M

CE1JMASDL1R0

C305

ELECTROLYTIC CAP. 0.47

µ

F/ 50V M

CE1JMASDLR47

C306

CHIP CERAMIC CAP.(1608) B K 0.015

µ

F/ 50V

CHD1JK30B153

C307

ELECTROLYTIC CAP. 47

µ

F/ 16V M

CE1CMASDL470

C308

CERAMIC CAP.(AX) F 0.1

µ

F/ 50V

CCK1JZT0F104

C309

CHIP CERAMIC CAP. F Z 0.01

µ

F/ 50V

CHD1JZ30F103

C310

CHIP CERAMIC CAP. CH J 120pF/ 50V

CHD1JJ3CH121

C311

CERAMIC CAP.(AX) F Z 0.01

µ

F/ 25V

CCA1EZTFZ103

C312

CHIP CERAMIC CAP. F Z 0.01

µ

F/ 50V

CHD1JZ30F103

C313

CERAMIC CAP.(AX) F Z 0.01

µ

F/ 25V

CCA1EZTFZ103

C314

CERAMIC CAP.(AX) F Z 0.01

µ

F/ 25V

CCA1EZTFZ103

C315

CHIP CERAMIC CAP.(1608) B K 0.01

µ

F/ 50V

CHD1JK30B103

C321

ELECTROLYTIC CAP. 4.7

µ

F/ 50V M NP

CP1JMASNC4R7

C322

CHIP CERAMIC CAP. F Z 0.01

µ

F/ 50V

CHD1JZ30F103

C331

ELECTROLYTIC CAP. 1

µ

F/ 50V M

CE1JMASDL1R0

C332

ELECTROLYTIC CAP. 1

µ

F/ 50V M

CE1JMASDL1R0

C333

ELECTROLYTIC CAP. 1

µ

F/ 50V M

CE1JMASDL1R0

C335

ELECTROLYTIC CAP. 1

µ

F/ 50V M

CE1JMASDL1R0

C336

CHIP CERAMIC CAP.(1608) B K 1000pF/ 50V

CHD1JK30B102

C337

ELECTROLYTIC CAP. 1

µ

F/ 50V M

CE1JMASDL1R0

C338

CHIP CERAMIC CAP.(1608) F Z 0.1

µ

F/ 25V

CHD1EZ30F104

C339

CHIP CERAMIC CAP.(1608) F Z 0.1

µ

F/ 25V

CHD1EZ30F104

C340

ELECTROLYTIC CAP. 10

µ

F/ 50V M

CE1JMASDL100

C341

CHIP CERAMIC CAP.(1608) F Z 0.1

µ

F/ 25V

CHD1EZ30F104

C342

CHIP CERAMIC CAP.(1608) F Z 0.1

µ

F/ 25V

CHD1EZ30F104

C343

ELECTROLYTIC CAP. 100

µ

F/ 6.3V M

CE0KMASDL101

C344

CHIP CERAMIC CAP. F Z 0.01

µ

F/ 50V

CHD1JZ30F103

C351

CHIP CERAMIC CAP.(1608) CH J 100pF/ 50V

CHD1JJ3CH101

C352

CHIP CERAMIC CAP.(1608) CH J 100pF/ 50V

CHD1JJ3CH101

C353

CHIP CERAMIC CAP.(1608) CH J 100pF/ 50V

CHD1JJ3CH101

C354

ELECTROLYTIC CAP. 10

µ

F/ 50V M

CE1JMASDL100

C355

ELECTROLYTIC CAP. 1000

µ

F/ 10V M

CE1AMASDL102

C357

ELECTROLYTIC CAP. 470

µ

F/ 6.3V M

CE0KMASDL471

C358

CHIP CERAMIC CAP.(1608) B K 0.1

µ

F/ 50V

CHD1JK30B104

C359

CHIP CERAMIC CAP.(1608) B K 0.1

µ

F/ 50V

CHD1JK30B104

C360

CHIP CERAMIC CAP.(1608) B K 0.033

µ

F/ 50V

CHD1JK30B333

C361

ELECTROLYTIC CAP. 10

µ

F/ 50V M

CE1JMASDL100

C363

CERAMIC CAP.(AX) F Z 0.01

µ

F/ 25V

CCA1EZTFZ103

C364

CERAMIC CAP.(AX) F 0.1

µ

F/ 50V

CCK1JZT0F104

C365

CERAMIC CAP.(AX) Y K 0.01

µ

F/ 16V

CCA1CKT0Y103

C366

CHIP CERAMIC CAP. F Z 0.01

µ

F/ 50V

CHD1JZ30F103

C367

CHIP CERAMIC CAP. F Z 0.01

µ

F/ 50V

CHD1JZ30F103

C368

CHIP CERAMIC CAP. F Z 0.01

µ

F/ 50V

CHD1JZ30F103

C381

ELECTROLYTIC CAP. 100

µ

F/ 10V M

CE1AMASDL101

C382

ELECTROLYTIC CAP. 47

µ

F/ 16V M

CE1CMASDL470

C383

ELECTROLYTIC CAP. 470

µ

F/ 6.3V M

CE0KMASDL471

C384

CHIP CERAMIC CAP. F Z 0.01

µ

F/ 50V

CHD1JZ30F103

C385

ELECTROLYTIC CAP. 100

µ

F/ 10V M

CE1AMASDL101

C386

ELECTROLYTIC CAP. 10

µ

F/ 50V M

CE1JMASDL100

C411

ELECTROLYTIC CAP. 10

µ

F/ 50V M

CE1JMASDL100

C420

CHIP CERAMIC CAP.(1608) F Z 0.1

µ

F/ 50V

CHD1JZ30F104

C450

ELECTROLYTIC CAP. 100

µ

F/ 10V M

CE1AMASDL101

C451

ELECTROLYTIC CAP. 10

µ

F/ 50V M

CE1JMASDL100

C452

ELECTROLYTIC CAP. 3.3

µ

F/ 50V M

CE1JMASDL3R3

C453

ELECTROLYTIC CAP. 3.3

µ

F/ 50V M

CE1JMASDL3R3

C454

CHIP CERAMIC CAP.(1608) B K 0.1

µ

F/ 50V

CHD1JK30B104

C455

CHIP CERAMIC CAP.(1608) B K 0.022

µ

F/ 50V

CHD1JK30B223

Ref. No.

Description

Part No.

Summary of Contents for EWFG2705

Page 1: ...SERVICE MANUAL 27 ANALOG DIGITAL COLOR TELEVISION EWFG2705 ...

Page 2: ...w 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 operation o...

Page 3: ...ntrol range dB 6 2 Brightness APL 100 ft L 20 3 Color Temperature K 9200 Description Condition Unit Limit 1 Video S N dB 43 2 Audio S N W LPF dB 45 Description Condition Unit Limit 1 RECEIVED FREQ RANGE 28dBm kHz 100 kHz 100 2 ATSC DYNAMIC RANGE min max VHF LOW BAND CH 4 VHF HI BAND CH 10 UHF BAND CH 41 dBm dBm dBm 76 0 76 0 74 4 3 ATSC SUSCEPTIBILITY TO RANDOM NOISE VHF LOW BAND CH 4 VHF HI BAND ...

Page 4: ...slightly below these specifications Limit specifications represent the absolute worst condition that still might be considered acceptable In no case should a unit fail to meet limit specifications 5 MULTIPATH A dB 6 B dB 6 C dB 6 D dB 6 E dB 6 F dB 6 FF dB 6 G dB 6 6 Audio S N 0dBfs L dB 50 R dB 50 7 Audio DIST 0dBfs L 3 R 3 Description Condition Unit Limit ...

Page 5: ...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 6: ...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 7: ...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 8: ...ed 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 following tab...

Page 9: ...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 10: ...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 11: ...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 12: ...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 13: ...elease 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 8 S 1 4 S 2 and S 3 then slide the Rear Cabinet backward 2 Removal of the CRT CBA Disconnect CN1501 then pull the CRT CBA backward 3 Removal of the Main CBA Disconnect CN801 CN802 CN571 and CN691...

Page 14: ... 1 S 1 S 1 S 1 S 1 S 1 S 2 S 2 S 3 1 Rear Cabinet Front Cabinet Control Plate Fig D2 3 Main CBA 4 Digital CBA Front Cabinet Control Plate Fig D3 S 4 S 4 S 4 S 4 5 CRT 2 CRT CBA Anode Cap Degaussing Coil Front Cabinet Control Plate CRT Ground Wire Fig D4 ...

Page 15: ...CN691 VIDEO 2 FRONT JACKS T571 FLYBACK TRANSFORMER ANODE CAP SCREEN FOCUS WH501A CN571 CN902 DIGITAL CBA CN901 JK1501 WH501B CN1501 WH301B JK742 JK741 JK701 JK703 JK702 JK721 JK711 CN801 CLN801 SP801 WH301A TU11 TUNER AC601 AC CORD SP802 DG691 DEGAUSSING COIL Fig D5 CRT CBA ...

Page 16: ...normal remote control unit Part No NE601UD 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 M02 0 43 N2 0A 4 Check ...

Page 17: ...f S COLOR S CLR becomes 87 C CLR 1 Press MENU button on the service remote control unit Then select COMPONENT COLOR C CLR display 2 Press CH o p buttons on the service remote control unit so that the value of COMPONENT COLOR C CLR becomes 73 TNT 1 Press MENU button on the service remote control unit Then select TINT TNT display 2 Press CH o p buttons on the service remote control unit so that the ...

Page 18: ... remote control unit display changes Red mode Green mode Blue mode and White mode cyclically 3 Select White mode 4 Turn the power off and on again Main power button on the TV unit 6 SD Check Mode 1 Enter the Service mode See page 5 1 2 Press 1 button on the remote control unit The unit enter the SD Check mode 3 The unit starts selecting the added channel from first channel according to the memoriz...

Page 19: ...creen image Symptom of misadjustment If V Position is incorrect vertical height of image on the screen may not be properly displayed Note Use service remote control unit 1 Operate the unit for at least 20 minutes 2 Enter the Service mode See page 5 1 3 Receive the monoscope pattern 4 Press 9 button on the service remote control unit and select V P mode Display change V S and V P cyclically when 9 ...

Page 20: ...teps 4 5 and 6 the horizontal line should be pure white if not then attempt the Cut off adjustment again 12 White Balance Adjustment Purpose To mix red green and blue beams correctly for pure white Symptom of Misadjustment White becomes bluish or reddish Note Use service remote control unit 1 Operate the unit more than 20 minutes 2 Face the unit to east Degauss the CRT using Degaussing Coil 3 Inpu...

Page 21: ...f the base of Q1511 on the CRT CBA with the oscilloscope 4 Press VOL o p button on the service remote control unit and select V Offset Magenta mode 5 Press CH o p buttons so that the waveform of the V Offset Magenta mode is equal to the waveform of the V Offset Cyan mode 15 U Offset YUV 1 In VIDEO mode white 50 of YUV press 3 button on the service remote control unit and select U Offset YUV mode D...

Page 22: ...wer off and on again Main power button on the TV unit 18 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 more than 30 minutes 2 Face the unit to the East and Degauss the CRT using Degaussing Coil 3 Input the Monoscope Pattern 4 Adju...

Page 23: ... adjustment like the below figure so that the cross hatch pattern becomes flat 21 Convergence Adjustment Purpose To obtain proper convergence of red green and blue beams Symptom of Misadjustment If Convergence Adjustment is incorrect the edge of white letters 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 Magnet...

Page 24: ...tion Yoke by carefully inserting the DY Wedges between CRT and Deflection Yoke 22 Yh Yv Xv Adjustment 1 Adjust the volume of Deflection Yoke Yh Yv Xv to get good convergence 23 Software Reset To reset software press 5 button on the remote control unit for at least 5 seconds after pressing CH RETURN button on the remote control unit Xv YH Yv FRONT YH Yv Xv ...

Page 25: ...r the Service mode Refer 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 INFO bu...

Page 26: ... CRT H V BLOCK PROTECT 2 PROTECT 1 PROTECT 3 P ON H KEY IN2 KEY IN1 RCV IN RCV401 IC421 MEMORY SCL 6 SDA 5 VOLUME 60 61 8 4 74 73 1 PROTECT 1 7 CS 78 I2C OPEN IC301 TV MICON VIDEO AUDIO CHROMA DEFLECTION TO IF VIDEO BLOCK 9 INPUT3 5 3 RESET DTV H TO AUDIO BLOCK VOLUME AUDIO MUTE MAIN CBA INPUT1 INPUT0 INPUT3 SCL SDA TO AUDIO BLOCK TO DTV BLOCK 10 AUDIO MUTE SCL SDA DTV S REQ DTV S SCLK DTV S SIN D...

Page 27: ...US A0 A12 TO IF VIDEO BLOCK TO AUDIO BLOCK JK742 DIGITAL AUDIO OUT COAXIAL TO SYSTEM CONTROL BLOCK DTV Y DTV Cb DTV Cr DTV AUDIO L DTV AUDIO R AUDIO MUTE L CH R CH AUDIO MUTE AA12 Y12 W13 W4 Y3 AA3 AA16 Y17 AA18 AA6 Y7 W7 AA5 W9 AA8 V9 Y6 V11 W3 Y2 AA2 BUFFER BUFFER BUFFER A3 A8 A12 A17 B4 B8 B12 B16 2 4 5 7 8 10 11 13 54 56 57 59 60 62 63 65 E1 E2 F1 G1 H1 H4 J1 J2 K1 K3 K4 L1 L2 28 32 35 42 BUFF...

Page 28: ...R VIF AMP VIDEO DET VCO 4 5MHz FILTER EQ AMP SIF TRAP AMP AFT SIF AMP 16 11 13 17 4 7 1 8 TU11 SF11 ANALOG OUT 8 31 SIF 51 50 49 MAIN CBA VIDEO SIGNAL RF IF SIGNAL AUDIO SIGNAL TO AUDIO BLOCK IC301 TV MICON VIDEO AUDIO CHROMA DEFLECTION JK721 S VIDEO IN C Y X301 3 58MHz TO SYSTEM CONTROL BLOCK VIDEO Y IN TO DTV BLOCK DTV Y DTV Cb DTV Cr VIDEO Cb IN VIDEO Cr IN JK741 35 34 33 REAR JK701 VIDEO IN2 J...

Page 29: ...W SAP FILTER I2C DECORDER SAP DEMOD SAP OUT FILTER 29 30 TO IF VIDEO BLOCK TUNER LINE1 LINE2 LINE1 COMP LINE2 L CH R CH 21 27 24 IC451 MTS SAP AUDIO SIGNAL PROCESS AUDIO L IN1 JK711 SIF INPUT3 AUDIO R IN1 JK702 AUDIO L IN2 JK703 AUDIO R IN2 OFFSET CANCEL COMP AUDIO L IN JK742 COMP AUDIO R IN 4 TUNER 14 COMP 11 IC801 AUDIO AMP 7 VOLUME 14 AMP AMP MUTE STANDBY CONTROL 3 8 R CH L CH 2 12 Q811 5V WF11...

Page 30: ...FOCUS SCREEN GND JK1501 CN1501 WH501B WH501A VIDEO SIGNAL CN571 H OUTPUT H DRIVE B X RAY CHECK TP591 TP592 PROTECT 3 DEF B AMP 7 1 6 3 PULSE UP THERMAL PROTECTION 5 WF8 WF7 WF9 WF5 WF4 WF6 WF1 WF2 WF3 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 SCR...

Page 31: ...601 8 9 14 13 10 11 12 Q681 8V SWITCHING Q682 Q901 Q902 Q646 Q645 5V SWITCHING Q910 3 3V SWITCHING Q383 3 3V SWITCHING IC901 5V REG IC903 1 2V REG IC904 1 2V REG IC910 2 5V REG Q381 Q647 1 8V SWITCHING Q673 Q672 9V REG RESET TO PIN5 OF IC301 GND TP300 Q382 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 com...

Page 32: ...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 33: ... 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 34: ...8 3 Main 1 5 Schematic Diagram L3821SCM1 MAIN 1 5 Ref No Position IC301 B 2 IC381 E 1 IC421 A 3 Q321 B 1 Q322 C 1 Q381 D 1 Q382 E 2 Q383 E 1 CN301 A 4 CN302 F 4 ICS TRANSISTORS CONNECTORS ...

Page 35: ...8 4 L3821SCM2 Main 2 5 Schematic Diagram MAIN 2 5 Ref No Position IC451 H 4 IC701 I 3 IC801 J 3 Q351 I 2 Q352 J 2 Q811 K 3 CN801 L 4 CN802 L 4 TRANSISTORS CONNECTORS ICS ...

Page 36: ...5 Main 3 5 Schematic Diagram L3821SCM3 MAIN 3 5 Ref No Position IC31 O 3 IC901 N 1 IC903 O 2 IC904 P 2 IC910 O 2 IC911 O 2 Q61 Q 2 Q901 P 1 Q902 O 1 Q910 O 1 CN901 M 4 CN902 M 2 ICS TRANSISTORS CONNECTORS ...

Page 37: ... T 4 Q552 U 3 Q571 U 3 Q572 T 2 CN571 U 4 WH301A V 2 WH501A V 3 TP300 T 2 TP591 T 2 TP592 T 2 TP601 T 2 TEST POINTS TRANSISTORS CONNECTORS IC CRT Ref No Position Q1511 V 2 Q1512 V 2 Q1521 W 2 Q1522 W 2 Q1531 W 2 Q1532 W 2 CN1501 W 3 WH301B V 2 WH501B V 3 TRANSISTORS CONNECTORS ...

Page 38: ...e components in the power supply circuit to fail For 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 MAIN 5 5 Ref No Position IC601 BB 2 Q601 CC 2 Q602 CC 2 Q645 Z 2 Q646 Z 2 Q647 Y 2 Q652 AA 1...

Page 39: ... diagram is different from that of actual IC101 2 IC101 is divided into two and shown as IC101 1 2 IC101 2 2 in this Digital Schematic Diagram Section DIGITAL 1 3 Ref No Position IC101 1 2 D 4 IC252 C 2 Q243 B 1 Q244 B 1 Q245 B 1 Q251 A 4 CN101 A 4 CN102 A 2 ICS TRANSISTORS CONNECTORS ...

Page 40: ...8 9 Digital 2 3 Schematic Diagram L3821SCD2 DIGITAL 2 3 Ref No Position IC253 K 1 Q281 Q 4 IC TRANSISTOR ...

Page 41: ...he order of pins shown in this diagram is different from that of actual IC101 2 IC101 is divided into two and shown as IC101 1 2 IC101 2 2 in this Digital Schematic Diagram Section DIGITAL 3 3 Ref No Position IC101 2 2 O 4 IC201 M 3 CN251 R 1 ICS CONNECTOR ...

Page 42: ...it is measured using hot GND as a common terminal Because a hot chassis ground is present in the power supply circuit an isolation transformer must be used Also in order to have the ability to increase the input slowly when troubleshooting this type power supply circuit a variable isolation transformer is required MAIN CBA Ref No Position IC31 B 2 IC301 E 2 IC381 E 3 IC421 E 2 IC451 F 2 IC551 B 3 ...

Page 43: ...V 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 NOTE The voltage for parts in hot circuit is measured using hot GND as a...

Page 44: ...1 Q1512 Collector Q1532 Collector WF3 BL3820F01012 2 CRT CBA Top View CRT CBA Bottom View CRT CBA Ref No Position Q1511 B 1 Q1512 B 1 Q1521 B 1 Q1522 B 2 Q1531 B 1 Q1532 B 2 CN1501 A 2 WH301B A 1 WH501B A 2 TRANSISTORS CONNECTORS ...

Page 45: ...r on Brightness Center Color Center Tint Center Contrast Approx 70 Pin 1 of CN571 Pin 4 of CN571 Pin 3 of WH501A WF6 1DIV 500mV 20µs Pin 31 of IC301 1DIV 500mV 500µs 1DIV 2V 500µs Pin 3 of IC801 Pin 14 of IC801 WF10 WF11 WF12 1DIV 10V 5ms WF5 Pin 7 of IC551 1DIV 1V 5ms WF9 GND GND GND GND GND Q571 Base WF7 Q572 Collector WF8 WF1 WF21 Waveforms to be observed at Waveform check points Shown in Schem...

Page 46: ... 5 minutes reconnect to AC outlet and then turn power on Brightness Center Color Center Tint Center Contrast Approx 70 WF18 WF17 WF21 GND GND WF19 WF20 WF1 WF21 Waveforms to be observed at Waveform check points Shown in Schematic Diagram Pin 2 of CN901 Pin 7 of CN901 Pin 15 of CN902 1DIV 1V 50µs Pin 20 of CN902 1DIV 1V 20ms Pin 8 of CN901 Pin 18 of CN902 Pin 19 of CN902 1DIV 1V 20ms Pin 10 of CN90...

Page 47: ...D DTV S RESET D GND SCL CN102 CN902 5 4 3 2 1 5 4 3 2 1 P ON 3 3V D GND P ON 1 2V 1 X TAL SW AL 2 5V 10 9 8 7 6 D IF AGC A GND NU P ON 1 2V 2 A GND 15 14 13 12 11 10 9 8 7 6 20 19 18 17 16 DTV Cr DTV Y A GND DTV AUDIO R DTV Cb 20 19 18 17 16 15 14 13 12 11 AUDIO MUTE A GND D IF2 D IF1 DTV AUDIO L HEATER 3 GND 2 200V 1 GND 2 200V 1 HEATER 3 CLN801 CLN802 GND GND CN301 NO CONNECTION CN301 IS USED FO...

Page 48: ... IN YUV Cb1 IN YUV 35 Y1 IN YUV Y1 IN YUV 36 1 8V CTAL 2 5V DIG VDDOUT 37 C2 IN YC C2 IN YC 38 Y2 IN YC Y2 IN YC 39 NU Not used 40 Cb2 IN YUV Cb2 IN YUV 41 Cr2 IN YUV Cr2 IN YUV 42 Y2 IN YUV Y2 IN YUV 43 NU Not used 44 VCC 9V VREGVCC 45 CVBS3 IN Composite Signal 3 Input 46 NU Not used 47 fsc OUT Clock Output 48 VCC 8V HI VCC 8 0V 49 R OUT Red Output 50 G OUT Green Output 51 B OUT Blue Output 52 AN...

Page 49: ...20 B 20 B 20 B 20 B 2 B 2 B 2 L1 L1 L1 L1 L1 L1 B 2 B 1 Digital CBA Main CBA AC601 B5 B4 B3 B2 B7 B6 CLN802 CLN801 CLN551 DY551 V501 DG691 CRT CBA Scotch Tape 880 Scotch Tape 880 See Electrical Parts List for parts with this mark Details for DY551 and surrounding parts SHINWHA TAPE SGT 730 WHITE SHINWHA TAPE SGT 730 BLACK V501 1 DY551 V501 2 ...

Page 50: ...12 2 L3821PEX Packing S 7 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 51: ...001 CLN801 WIRE ASSEMBLY WX1L6615 002 WX1L6615 002 CLN802 WIRE ASSEMBLY WX1L2805 003 WX1L2805 003 DG691 DEGAUSSING COIL ZTM 58 LLBH00ZTM058 DY551 DEFLECTION YOKE SCD 29319 LLBY00ZQS018 L 8 SCREW P TIGHT 4X18 BIND HEAD GBMP4180 L 9 SCREW TAPPING M4X14 DBU14140 L 10 SCREW P TIGHT 3X10 BIND HEAD GBKP3100 L 13 SCREW ASSEMBLED 12 M3X12 0EM406746 PB6 CLOTH 65 L7735TR 65X10X0 5T 0EM402149 SP801 SPEAKER S...

Page 52: ...AMIC CAP CH J 120pF 50V CHD1JJ3CH121 C311 CERAMIC CAP AX F Z 0 01µF 25V CCA1EZTFZ103 C312 CHIP CERAMIC CAP F Z 0 01µF 50V CHD1JZ30F103 C313 CERAMIC CAP AX F Z 0 01µF 25V CCA1EZTFZ103 C314 CERAMIC CAP AX F Z 0 01µF 25V CCA1EZTFZ103 C315 CHIP CERAMIC CAP 1608 B K 0 01µF 50V CHD1JK30B103 C321 ELECTROLYTIC CAP 4 7µF 50V M NP CP1JMASNC4R7 C322 CHIP CERAMIC CAP F Z 0 01µF 50V CHD1JZ30F103 C331 ELECTROLY...

Page 53: ...C CAP 1608 B K 4700pF 50V CHD1JK30B472 C665 CERAMIC CAP B K 680pF 50V CCD1JKS0B681 C666 CERAMIC CAP B K 680pF 50V CCD1JKS0B681 Ref No Description Part No C667 ELECTROLYTIC CAP 1µF 50V M CE1JMASDL1R0 C674 ELECTROLYTIC CAP 1µF 50V M CE1JMASDL1R0 C681 ELECTROLYTIC CAP 10µF 50V M CE1JMASDL100 C682 ELECTROLYTIC CAP 100µF 10V M CE1AMASDL101 C684 ELECTROLYTIC CAP 1000µF 10V M CE1AMASDL102 C685 ELECTROLYT...

Page 54: ... IC BR24L64F WE2 QSZBA0TRM071 IC451 IC MTS DECORDER AN5832SA E1V QSZBA0TMS003 IC551 IC VERTICAL OUTPUT LA78041 E QSZBA0SSY006 Ref No Description Part No IC601 PHOTO COUPLER PS2501 1L QPEL0PS25011 IC701 IC SWITCHING TC4052BF EL QSZBA0TTS096 IC801 IC AN17812A QSZBA0SMS017 IC901 VOLTAGE REGULATOR KIA7805API NSBBA0SJY011 IC903 IC LD1117V NSZBA0SSS046 IC904 VOLTAGE REGULATOR PQ070XF01SZH QSZBA0SSH054 I...

Page 55: ...70 CHIP RES 1608 1 10W J 2 2k Ω RRXAJR5Z0222 R371 CHIP RES 1608 1 10W J 2 2k Ω RRXAJR5Z0222 Ref No Description Part No R373 CHIP RES 1608 1 10W J 22k Ω RRXAJR5Z0223 R374 CHIP RES 1608 1 10W J 100 Ω RRXAJR5Z0101 R376 CHIP RES 1608 1 10W J 100 Ω RRXAJR5Z0101 R377 CARBON RES 1 4W J 470 Ω RCX4JATZ0471 R378 CHIP RES 1608 1 10W J 2 2k Ω RRXAJR5Z0222 R379 CHIP RES 1608 1 10W J 2 2k Ω RRXAJR5Z0222 R380 CH...

Page 56: ...0273 Ref No Description Part No R678 CHIP RES 1608 1 10W J 56k Ω RRXAJR5Z0563 R680 CHIP RES 1608 1 10W J 10k Ω RRXAJR5Z0103 R682 METAL OXIDE FILM RES 1W J 10 Ω RN01100ZU001 R683 PCB JUMPER D0 6 P5 0 JW5 0T R684 PCB JUMPER D0 6 P5 0 JW5 0T R685 CARBON RES 1 2W J 39 Ω RCX2JZQZ0390 R686 CARBON RES 1 4W J 47 Ω RCX4JATZ0470 R687 CARBON RES 1 4W J 10 Ω RCX4JATZ0100 R694 CHIP RES 1608 1 10W J 4 7k Ω RRXA...

Page 57: ...572 PCB JUMPER D0 6 P5 0 JW5 0T JS801 PCB JUMPER D0 6 P5 0 JW5 0T JS802 PCB JUMPER D0 6 P5 0 JW5 0T L1 SCREW B TIGHT D3X8 BIND HEAD GBMB3080 LD003 LEAD WIRE 1P 50MM 1P 50MM WX3801A44405 PS691 THERMISTOR ZPB45BL3R0A QNBZ45BL3R0A Ref No Description Part No RCV401 REMOCON RECEIVE UNIT KSM 602SR2E 2 USESJRSKK045 RL601 POWER RELAY SDT S 112LMR MRNDC12QN014 SA601 SURGE ABSORBER PVR 07D471KB NVQZ07D471KB...

Page 58: ...10W J 100 Ω RRXAJR5Z0101 R1535 CARBON RES 1 4W J 1 2k Ω RCX4JATZ0122 R1538 CARBON RES 1 4W J 270 Ω RCX4JATZ0271 R1539 CHIP RES 1608 1 10W J 100 Ω RRXAJR5Z0101 MISCELLANEOUS BC1501 BEAD INDUCTORS FBR07HA121TB 00 LLBF00ZTU021 JK1501 CRT SOCKET ISHS40ST JSCC290PK006 Ref No Description Part No ...

Page 59: ...EWFG2705 L3821UB 2005 07 27 ...

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