Panasonic CT-2721HDB Service Manual Download Page 9 | Manualshive

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Location of Screws

Figure 3. Back Cover Removal.

3 SCREWS

1 SCREW
(Some models)

1 SCREW

1 SCREW

1 SCREW

1 SCREW

Note: Screw number my vary

depending on model.

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Summary of Contents for CT-2721HDB

Page 1: ...empting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt with in this Service Manual by anyone else could result in serious injury or death Chassis CT 2511HDB AP335 CT 2521HDB BP355 CT 2721HDB BP307 CT 3221HDB AP357 Models ORDER NO MTNC000929A1 B5 This Simp...

Page 2: ...imits the X ray radiation around the bell of the picture tube in addition to the restricting magnetic effects When using a picture tube test jig for service ensure that the jig is capable of handling 50 0kV without causing X ray radiation Before returning a serviced receiver to the owner the service technician must thoroughly test the unit to ensure that is completely safe to operate Do not use a ...

Page 3: ...djustment 16 Options Adjustment 17 MTS Adjustment 17 To Check Purity 18 Helpful Hints 18 Instructional Flow Chart for Serviceman Mode 19 Service Adjustments Electronic Control 21 Sub Brightness 21 Video Adjustment Level 21 Sub Contrast 21 Tint Color Adjustment 21 Color Temperature Adjustment 22 Horizontal Centering 23 Audio Adjustment 23 MTS Circuit Adjustment 23 Clock Adjustment Sb 24 Vertical Si...

Page 4: ...ing pads with tweezers or with a miniature alligator clip and apply heat to the pad area with a 30 watt iron until solder flows Do not apply heat for more than 3 seconds How to Replace Flat IC Required Tools 1 Remove the solder from all of the pins of a Flat IC by using a de solder braid 2 Put the iron wire under the pins of the Flat IC and pull it in the direction indicated while heating the pins...

Page 5: ...n the high voltage and beam current exceed a predetermined level this protective circuit activates and detunes the horizontal oscillator that limits the high voltage The over voltage protection circuit is not adjustable However if components indicated by the symbol on the schematic in either the horizontal sweep system or the over voltage protection circuit itself are changed the operation of the ...

Page 6: ...2 2 2 A V in rear front 1 0 1 1 1 1 1 1 Interface Smart Plug Smart Plug Smart Plug Speaker Out X Mono Fixed X Mono Fixed X Mono Fixed Dimensions mm HxWxD in 568x633 4x491 8 23 14x24 92x19 36 568x633 4x491 8 23 14x24 92x19 36 594 8x665 2x545 23 41x26 18x21 45 694 4x770x535 5 27 33x30 31x21 08 Weight kg lbs 29 7 65 47 29 7 65 47 34 9 77 49 6 109 12 Power source V Hz 120 60 120 60 120 60 120 60 Anode...

Page 7: ...to highlight desired features when menus are displayed Also use to select Cable Converter box channels after programming Remote Control Infra red codes the TV AUX CABLE switch must be set in CABLE position Action Press to display Main Menu and access On Screen feature and Adjustment Menus TV Video Press to select TV or one of two Video Inputs for the Main Picture or the PIP frame when PIP frame is...

Page 8: ...node button from the main board 3 Remove the C Board from the CRT base and unplug the black wire CRT dag ground C10 4 Disconnect the A11 A12 and Speakers plugs from the A Board 5 Lift the Main Chassis A Board and all mounted boards completely out with the CRT Board attached CRT Replacement 1 Insure that the CRT H V Anode button is discharged before handling the CRT Read the Safety Precautions page...

Page 9: ... 9 Location of Screws Figure 3 Back Cover Removal 3 SCREWS 1 SCREW Some models 1 SCREW 1 SCREW 1 SCREW 1 SCREW Note Screw number my vary depending on model ...

Page 10: ...Rear View T551 FLYBACK TRC 4 SCREWS ANODE HIGH VOLTAGE Note Following the service remember to dress the cables as shown above DI BOARD A BOARD DEFLECTION YOKE TUNER DAG GROUND SPEAKERS 4 SCREWS EACH C BOARD YOKE POSITION WEDGE CONVERGENCE YOKE ...

Page 11: ...Use the correct ground for the lead of the DVM C809 131V 2 5V TPD9 13 0V 2V C552 20 0V 2V 27 25 8 0V 1V 32 TPD8 27 4V 2V CATHODE OF D554 220 0V 15V 27 32 220 0V 5V 25 Adjust Picture Menu for normalized video adjustments B 5V Source Voltages Volatile 5V C572 side IC552 pin 3 Tuner BPL IC101 IF 5V MPU 5V Emitter Q002 IC001 VDD AVDD Standby 5V IC001 key in 1 I2C EEPROM IC002 Remote Receiver B 9V Sour...

Page 12: ...14 Q501 19 C552 3 IC101 VCJ 10 IC2451 SOUND AGC OTHERS 20 C809 4 IC451VERTICAL CONNECTORS 15 T551 FLYBACK 21 REMOTE SENSOR 5 IC551 11 A V INPUT FRONT 16 FUSE 22 RL801 6 IC552 C BOARD DI BOARD Except CT 2511H Z BOARD Except CT 2511H Figure 6 View of Boards Note A V Inputs not available on some models A BOARD 1 2 3 4 6 5 8 9 10 11 13 14 15 16 17 18 19 20 21 22 7 12 ...

Page 13: ...rity Check green screen appears For a 2 piece assembly Fig 7 Loosen the deflection yoke clamp screw and move the deflection yoke back as close to the purity magnet as possible Adjust the front rings to set the vertical green raster precisely at the center of the screen Fig 9 Slowly move the deflection yoke forward until the best overall green screen is displayed For a 1 piece assembly Fig 8 Slowly...

Page 14: ...onverge the set without the strip and observe the corners If correction is needed 1 Place strip between CRT and yoke in quadrant needing correction Slowly move it around for desired results 2 Press adhesive tightly to the CRT and secure with tape B G R As the yoke is moved vertically the rasters produced by the outside guns rotate in opposite directions Figure 10 Vertical Yoke Movement R B B G R R...

Page 15: ...tton decrease on Receiver Red CHK appears in upper corner 7 Press the Power Button on the Remote Control to select one of six Serviceman Adjustment Modes 1 B Serviceman VCJ SUB DATA ADJUSTEMENT 2 C Serviceman VCJ CUT OFF ADJUSTMENT 3 S Serviceman OPTIONS PIP and CLOCK ADJUSTMENT 4 M Serviceman MTS ADJUSTMENTS 5 X Serviceman COMB FILTER ADJUSTMENT 6 CHK Normal operation of CHANNEL and VOLUME Exitin...

Page 16: ...efault Level C0 CUT OFF R 0 1 0 255 0 127 C1 CUT OFF G 0 255 64 C2 CUT OFF B 0 1 0 255 0 100 C3 DRIVE R 0 127 67 C4 DRIVE B 0 127 64 C5 YNR SWITCH 0 1 0 C6 AFT 0 1 0 255 1 103 C7 RF AGC 0 127 64 C8 YNR VIDEO ADJUSTMENT 0 7 0 C9 HORIZONTAL CENTER 0 31 12 Ca BEAM LIMIT 0 7 4 Cb VCJ TEST H 0 2 2 1 Press Channel Up Down on the Remote Control to select one of the available Service Adjustments a in Fig ...

Page 17: ...he selected Service Adjustment See b in Fig 13 CH CH PW To B Items IMPORTANT NOTE Always Exit the Serviceman Mode Following Adjustments Options Adjustment Adj Range Default Level S0 PIP COLOR 0 127 80 S1 PIP CONTRAST 0 127 52 S2 UP 1 9 0 255 26 S3 DOWN 1 9 0 255 146 S4 LEFT 1 9 0 255 9 S5 RIGH 1 9 0 255 103 S6 UP 1 16 0 255 27 S7 DOWN 1 16 0 255 163 S8 LEFT 1 16 0 255 9 S9 RIGH 1 16 0 255 118 Sa F...

Page 18: ...ceiver is ON and operating in Normal Mode momentarily short test point FA1 TP8 to Cold Ground FA2 TP3 A Board The Receiver enters the Aging Mode Yellow letters CHK appear in the upper left corner of the CRT The Volume Up Down will adjust rapidly 2 Simultaneously press the Action and the Volume Up buttons on the Receiver Control Panel The Receiver enters the Serviceman Mode The letter in CHK turn r...

Page 19: ...TE AGING MODE Yellow CHK appears in upper left corner of screen Volume Up Down operate rapidly Costumer Controls are set to nominal level SERVICEMAN MODE CHK turns red Volume Up Down operate normally Costumer Controls are set to nominal level SUB DATA ADJUSTMENTS B ITEMS A QUICK ENTRY TO SERVICEMAN MODE Select CABLE Mode Set SLEEP time for 30 Min Tune to Channel 124 Adjust Volume to minimum Press ...

Page 20: ...TS ADJUSTMENTS M ITEMS Adj needed N Y M2 LOW LEVEL SEPARATION M1 HIGH LEVEL SEPARATION M0 INPUT LEVEL OPTIONS ADJUSTMENTS S ITEMS Adj needed N Y Sd LOUDNESS COMPENSATION Sc PIP TINT Sb CLOCK ADJUSTMENT Sa FREERUN S9 RIGH 1 16 S8 LEFT 1 16 S7 DOWN 1 16 S6 UP 1 16 S5 RIGH 1 9 S4 LEFT 1 9 S3 DOWN 1 9 S2 UP 1 9 S1 PIP CONTRAST S0 PIP COLOR B N ON REMOTE CH ON REMOTE CH ON REMOTE CH ON REMOTE CH POWER ...

Page 21: ...t the DAC Sub Contrast Adjustment B3 Sub Contrast Serviceman DAC Adjustment B3 This adjustment is factory set Do not adjust unless repairs are made to associated circuit the CRT Board or when the CRT is replaced Preparation 1 Apply a color bar signal pattern with 87 5 modulation 70 saturated color bar with a 100 IRE white and 7 5 black Note The pattern used in this procedure is an EIA color bar pa...

Page 22: ...in Fig 21 5 Connect the scope to GRN Cathode KG on the CRT Board 6 In the Serviceman Mode for making electronic adjustments select the GREEN CUTOFF DAC C1 7 Press the R Tune key on the remote 8 View scope trace at Horizontal rate and adjust the Serviceman Mode DAC C1 level until a scanning period of voltage above DC ground is measured as indicated in Fig 22 9 Connect the scope to the RED Cathode K...

Page 23: ...rmed only when IC002 or IC101 is replaced Preparation 1 Apply the following signal at the antenna 70dB 5dB 75Ω open P S 10dB audio signal set to monaural 300Hz 100 modulation video input of 100 IRE flat field 30 modulation 2 Connect the RMS Meter with filter jig as shown in Fig 23 Procedure 1 In the Serviceman Mode for making electronic adjustments select the Audio Adjustment DAC B6 and adjust unt...

Page 24: ...raster are visible 2 Adjust the VERTICAL SIZE control B7 until the top and the bottom of the raster touch the bezel edge The advance SIZE control to obtain an approximately 10 overscan Linearity adjustment is don automatically when the size is being adjusted Best results can de obtained with a round test patter Service Adjustments Mechanical Controls VCO Field Alignment L105 IC101 pins 35 36 1 Con...

Page 25: ...to highlight the Ch Cap icon then press the ACTION button Use the CH buttons to highlight the channel number then press the VOL buttons to select characters for the channel caption Press the ACTION button to return to the Main Menu 6 Exit the Main Menu by pressing the ACTION button 7 If necessary set the maximum volume level 8 If the hotel has hotel barker channel tune the set to the barker channe...

Page 26: ...conds when the procedure is complete 6 Disconnect the clone box from the television and turn it OFF 7 Reset the volume on the television 8 Refer to the section entitled Setting Up Other Televisions Using the Clone Box TEACH For higher volume The television must be in Normal TV mode Refer to the section entitled Resetting the Television to Normal TV mode 1 Turn television ON 2 Adjust the television...

Page 27: ... The LEDs will flash red and green to confirm power is ON 2 Connect the clone box to the Digital Interface port on the back of the television The television must be plugged into an AC outlet but can be either OFF or ON 3 Press the AMS button Note Insert a slender tool about 3 4 inch paper clip into the opening The green LED will flash while the television is reset to Normal TV mode The green LED w...

Page 28: ...er Ver Pulse Output CW Out Spot KILLER Off Input X ray Prot Out Hor Pulse Output X ray Protection Input Hor VCO 32fH AFC1 Filter Vcc3 6 2V FBP Input GND Luma Chroma Sync Chrominance Input Black Expansion Start Vcc2 2 5V Chrominance Synchronous DAC Hor Sync Input Ver Sync Clamp Y Ver Sync Input BLACK Detect Vcc1 2 9V VIF VCO 2 VIF VCO 1 VIF APC Filter VIF Detect Output Internal Video Composite Inpu...

Page 29: ...27 28 29 30 31 32 62 60 59 58 56 54 52 49 48 47 46 45 44 43 42 41 40 39 63 61 57 55 53 51 50 64 38 37 36 35 34 33 VOL S A ON OFF IF DEFEAT RECHARGE MNTR PW DOWN DATA IN REMOTE SIGNAL AFC 1st T AFC 2nd T LOCK DETECT KEY SCAN ACTION HSS VERSION S VHS NOT USED FA1 NOT USED GND TEST OSC NOT USED NOT USED NOT USED NOT USED V SIZE NOT USED CC GND NOT USED AVDD C REF NOT USED VCP CVBS NOT USED NOT USED N...

Page 30: ...C 22PF J 50V C036 ECJ2VC1H220J CAP C 22PF J 50V C037 ECJ2VC1H220J CAP C 22PF J 50V C038 ECJ2VC1H220J CAP C 22PF J 50V C101 ECJ2VF1H223Z CAP C 022UF Z050V C102 ECA1EM100 CAP E 10UF 25V C103 ECJ2VC1H300J CAP C 30PF J 50V C105 ECJ2VC1H221J CAP C 220PF J 50V C106 ECA1HMR47 CAP E 47UF 50V C107 ECJ2VC1H470J CAP C 47PF J 50V C108 ECA1HMR22 CAP E 22UF 50V C109 EEANA1E4R7B CAP E 4 7UF 25V C110 ECJ2VF1H103Z...

Page 31: ...P C 100PF K 500V C531 ECA1EM220 CAP E 22UF 25V C532 ECA1AM102 CAP E 1000UF 10V C533 ECJ2VF1H103Z CAP C 01UF Z 50V C534 ECJ2VF1H103Z CAP C 01UF Z 50V C551 ECA1VM331 CAP E 330UF 35V C552 ECA1EM471 CAP E 470UF 25V CT 2511HDB CT 2521HDB CT 2721HDB REF NO PART NO DESCRIPTION C553 ECKD2H561KB CAP C 560PF K 500V CT 2511HDB CT 2521HDB CT 2721HDB C554 ECKD2H561KB CAP C 560PF K 500V C555 ECEA2EU220 CAP E 22...

Page 32: ...50V C811 ECQU2A153MV CAP P 015UF M 250V C812 ECQU2A224MV CAP P 22UF M 250VAC C814 ECQB1H333JM CAP P 033UF J 50V CT 2511HDB CT 2521HDB CT 2721HDB C814 ECQB1H823JM CAP P 082UF J 50V CT 3221HDB C815 ECA1EHG101B CAP E 100UF 25V C818 ECKD3A821KB CAP C 820PF K 1KVDC REF NO PART NO DESCRIPTION C820 ECA1JHG100B CAP E 10UF 63V C821 ECKD2H561KB CAP C 560PF K 500V CT 3221HDB C822 ECA1EM221 CAP E 220UF 25V CT...

Page 33: ...T 2511HDB CT 2521HDB CT 2721HDB D554 AU02 DIODE D555 MA165 DIODE D556 MA4360H DIODE ZENER D558 RS3FS DIODE D559 BYD33G 113 DIODE D560 MA165 DIODE D561 AU02 DIODE REF NO PART NO DESCRIPTION D751 MA2270B DIODE CT 3221HDB D801 GP15KL 042 DIODE D802 GP15KL 042 DIODE D805 TAP111M003 DIODE CT 2721HDB CT 3221HDB D805 TRPW5B0M050D THERMISTOR CT 2511HDB CT 2521HDB D806 MA4047H DIODE D807 MA165 DIODE D809 R...

Page 34: ...R0K COIL PEAKING 1 0UH L105 EIV7EN053B COIL VCO L106 ELESN180JA COIL PEAKING 18UH L241 EXCELSA24T FERRITE BEAD L253 EXCELSA35 FERRITE BEAD L351 TLTABT101K COIL PEAKING REF NO PART NO DESCRIPTION L551 ELH5L7103 COIL CT 2721HDB L551 ELH5L7115 COIL CT 3221HDB L551 TLH6663P COIL LINEARITY CT 2511HDB CT 2521HDB L602 ELESN120JA COIL PEAKING 12UH L751 ELC18B301L COIL CHOKE CT 3221HDB L752 EXCELDR35 FERRI...

Page 35: ...70K J 1 10 R021 ERJ6GEYJ101 RES M 100 J 1 10 R022 ERJ6GEYJ101 RES M 100 J 1 10 R023 ERJ6GEYJ102 RES M 1K J 1 10 R025 ERJ6GEYJ223 RES M 22K J 1 10 R026 ERJ6GEYJ273 RES M 27K J 1 10 R027 ERJ6GEYJ622 RES M 6 2K J 1 10 REF NO PART NO DESCRIPTION R028 ERJ6GEYJ103 RES M 10K J 1 10 R030 ERJ6GEYJ102 RES M 1K J 1 10 R032 ER0S2CKF1002 RES M 10K F 1 4 R033 ERJ6GEYJ222 RES M 2 2K J 1 10 R034 ERJ6GEYJ222 RES M...

Page 36: ... 2511HDB CT 2521HDB CT 2721HDB R362 ERJ6GEYJ911 RES M 910 J 1 10 CT 3221HDB R363 ERJ6GEYJ101 RES M 100 J 1 10 R364 ERJ6GEYJ101 RES M 100 J 1 10 R365 ERJ6GEYJ101 RES M 100 J 1 10 R370 ERDS2TJ224 RES C 220K J 1 4 CT 2511HDB CT 2521HDB REF NO PART NO DESCRIPTION R371 ERDS2TJ393 RES C 39K J 1 4 CT 2511HDB CT 2521HDB R401 ERJ6GEYJ102 RES M 1K J 1 10 R430 ERJ6GEYJ103 RES M 10K J 1 10 R432 ERJ6GEYJ102 RE...

Page 37: ...521HDB CT 2721HDB R554 ERG2FJ390H RES M 39 J 2W R556 ERDS2TJ272 RES C 2 7K J 1 4 R557 ERDS2TJ103 RES C 10K J 1 4 R558 ERQ1CKPR56 RES F 56 K 1W CT 2721HDB REF NO PART NO DESCRIPTION R558 ERQ1CZKR33 RES F 33 K 1W CT 2511HDB CT 2521HDB R558 ERQ2CJP1R8 RES F 1 8 J 2W CT 3221HDB R559 ERG2FJ683H RES M 12K J 2W R560 ERG2FJ122H RES M 12K J 2W CT 2721HDB R560 ERG2FJ182H RES M 1 8K J 2W CT 2511HDB CT 2521HD...

Page 38: ...M 1K J 1 10 R1008 ERJ6GEYJ102 RES M 1K J 1 10 R1010 ERDS2TJ472 RES C 4 7K J 1 4 CT 2521HDB CT 2721HDB CT 3221HDB REF NO PART NO DESCRIPTION R1010 ERJ6GEYJ103 RES M 10K J 1 10 R1011 ERDS2TJ103 RES C 10K J 1 4 CT 2521HDB CT 2721HDB CT 3221HDB R1012 ERDS2TJ104 RES C 100K J 1 4 CT 2521HDB CT 2721HDB CT 3221HDB R1013 ERDS2TJ103 RES C 10K J 1 4 CT 2521HDB CT 2721HDB CT 3221HDB R1015 ERDS2TJ105 RES C 1ME...

Page 39: ... S002 EVQPF106K SWITCH S003 EVQPF106K SWITCH S004 EVQPF106K SWITCH S005 EVQPF106K SWITCH S008 EVQPF106K SWITCH S009 EVQPF106K SWITCH TRANSFORMERS T001 TLP16297 TRANSFORMER POWER SUPPLY T501 TLH15452 TRANSFORMER HORIZONTAL DRIVER REF NO PART NO DESCRIPTION T502 ETE19Z30AY TRANSFORMER HORIZONTAL COUPLING T551 KFT4AB143F TRANSFORMER FLYBACK CT 2511HDB CT 2521HDB CT 2721HDB T551 KFT5AB106F TRANSFORMER...

Page 40: ...DB DY TLY2AA003 DEFLECTION YOKE CT 2721HDB DY TLY2AA008 DEFLECTION YOKE CT 3221HDB DY TLY2AA013 DEFLECTION YOKE CT 2511HDB CT 2521HDB M023 TQB2AA0361 1 MANUAL OWNERS M024 TQB2AA7034 V CHIP INSTRUCTIONS REF NO PART NO DESCRIPTION DEG TSP2AA007 COIL DEGAUSSING 32 CT 3221HDB M025 TSX2AA0211 LINE CORD SPT2 CT 2511HDB CT 2521HDB M026 TSX2AA0212 LINE CORD CT 2721HDB CT 3221HDB M027 TXF3A01AFR ASSY DAG G...

Page 41: ...s por el fabricante 6 LINEA GRUESA indica las líneas de alimentación de los Voltajes B 7 Los diagramas eléctricos están sujetos a cambio sin previo aviso 8 El símbolo indica que es una conexión a Tierra Caliente y el símbolo indica conexión a Tierra Fría NOTA Los demas símbolos de componentes incluidos son usados con fines de diseño Schematic Notes 1 Resistors are carbon 1 4W unless noted otherwis...

Page 42: ... 42 CT 2511HDB A Board Schematic Left Portion Diagrama Eléctrico de la Tarjeta A Sección Izquierda FO book Page 42 Wednesday November 1 2000 11 41 AM ...

Page 43: ...minal de algún componente son indicados por Los puntos de prueba fuera de los componentes se indican con 5 Los componentes señalados con el símbolo son considerados componentes críticos y deben ser reemplazados sólo con las partes especificadas por el fabricante 6 LINEA GRUESA indica las líneas de alimentación de los Voltajes B 7 Los diagramas eléctricos están sujetos a cambio sin previo aviso 8 E...

Page 44: ...E COMPONENTES CRITICOS SOLO PARTES ESPECIFICADAS POR EL FABRICANTES LOS COMPONENTES CRITICOS ESTAN SEÑALADOS EN LOS DIAGRAMAS POR EL SIMBOLO IMPORTANT SAFETY NOTICE THIS SCHEMATIC DIAGRAM INCORPORATES SPECIAL FEATURES THAT ARE IMPORTANT FOR PROTECTION FROM X RADIATION FIRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IT IS ESSENTIAL THAT ONLY MANUFACTURERS SPECIFIED PARTS BE USED FOR THE CRITICAL C...

Page 45: ...el Negro 3 Los ajustes de usuario de los Menus PICTURE y AUDIO se normalizaron Posteriormente el nivel de volumen se ajusta al mínimo 4 Las formas de onda de Video y Color fueron tomadas con un osciloscopio de banda alta y con un punta de prueba de baja capacitancia 10 a 1 La forma y amplitud de las ondas puede variar según el tipo de osciloscopio que se utilice y sus características 5 El símbolo ...

Page 46: ... 46 CT 2521HDB A Board Schematic Diagrama Eléctrico Tarjeta A FO book Page 46 Wednesday November 1 2000 11 41 AM ...

Page 47: ...Los diagramas eléctricos están sujetos a cambio sin previo aviso 8 El símbolo indica que es una conexión a Tierra Caliente y el símbolo indica conexión a Tierra Fría NOTA Los demas símbolos de componentes incluidos son usados con fines de diseño Schematic Notes 1 Resistors are carbon 1 4W unless noted otherwise 2 Capacitors are ceramic 50V unless noted otherwise 3 Coil value notes is inductance in...

Page 48: ... 48 CT 2721HDB A Board Schematic Left Portion Diagrama Eléctrico Tarjeta A Sección Izquierda FO book Page 48 Wednesday November 1 2000 11 41 AM ...

Page 49: ...Los diagramas eléctricos están sujetos a cambio sin previo aviso 8 El símbolo indica que es una conexión a Tierra Caliente y el símbolo indica conexión a Tierra Fría NOTA Los demas símbolos de componentes incluidos son usados con fines de diseño Schematic Notes 1 Resistors are carbon 1 4W unless noted otherwise 2 Capacitors are ceramic 50V unless noted otherwise 3 Coil value notes is inductance in...

Page 50: ... 50 CT 3221HDB A Board Schematic Left Portion Diagrama Eléctrico Tarjeta A Sección Izquierda FO book Page 50 Wednesday November 1 2000 11 41 AM ...

Page 51: ...Los diagramas eléctricos están sujetos a cambio sin previo aviso 8 El símbolo indica que es una conexión a Tierra Caliente y el símbolo indica conexión a Tierra Fría NOTA Los demas símbolos de componentes incluidos son usados con fines de diseño Schematic Notes 1 Resistors are carbon 1 4W unless noted otherwise 2 Capacitors are ceramic 50V unless noted otherwise 3 Coil value notes is inductance in...

Page 52: ... 44 11 90 3 87 Q752 11 87 0 77 12 54 Q753 0 78 11 06 0 68 B C E Q1001 0 34 0 65 GND Q1002 0 35 0 39 GND B C E Q1003 0 75 0 00 GND Q1004 0 01 12 03 GND Q1005 0 54 0 04 GND Q1006 0 00 0 67 GND Q1007 0 04 0 09 GND IC 1001 1 2 3 4 5 6 7 0 10 0 10 0 10 5 05 0 02 12 75 GND 8 9 10 11 12 13 14 0 41 0 42 0 41 5 00 0 02 12 75 12 77 Nota La medición de los voltajes se hizo con un Voltímetro Digital Note Obta...

Page 53: ... 4 0 68 0 12 0 15 12 05 IC 803 1 2 3 4 5 75 49 130 66 299 15 117 76 130 17 B E C IDENTIFICACIÓN DE TERMINALES PARA TRANSISTORES EN CHIP B E C CHIP TRANSISTOR LEAD DESIGNATION Voltage Measurements 1 Voltage measurement AC input to the Receiver is 120V NTSC HD 1125i 525P when applicable signal generator is connected to the antenna of the Receiver Color bar pattern of 100 IRE white and 7 5 IRE black ...

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