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Panasonic CT-27SX11E Service Manual

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Service Manual
This Service manual is issued as a service guide for the models of the NA8MS family listed above. Included in this
manual are a set of schematic, block diagrams, functional descriptions, alignment procedures, disassembly
procedures and a complete parts list.
"WARNING! This Service Manual is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting 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."
The service technician is required to read and follow the "Safety Precautions" and "Important Safety Notice" in this Main Manual.
Models
CT-27SX11E
CT-27SX11UE
CT-27SX11CE
CT-27SX31E
CT-27SX31UE
CT-27SX31CE
Copyright 2001 by Matsushita Electric Corporation of
America. All rights reserved. Unauthorized copying
and distribution is a violation of law.
®
ORDER NO. MTNC010527C1
B5
Color Television
Main Manual
(NA8MS)
Panasonic
Chassis
AP368
AP368
AP368
EP368
EP368
EP368

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Summary of Contents for Panasonic CT-27SX11E

  • Page 1 ORDER NO. MTNC010527C1 Service Manual Color Television Main Manual (NA8MS) Panasonic Models Chassis CT-27SX11E AP368 CT-27SX11UE AP368 CT-27SX11CE AP368 CT-27SX31E EP368 CT-27SX31UE EP368 CT-27SX31CE EP368 This Service manual is issued as a service guide for the models of the NA8MS family listed above. Included in this manual are a set of schematic, block diagrams, functional descriptions, alignment procedures, disassembly procedures and a complete parts list.

  • Page 2: Important Safety Notice

    Important Safety Notice Special components are used in this television set which are important for safety. These parts are identified on the schematic diagram by the symbol and printed in BOLD TYPE on the replacement part list. It is essential that these critical parts are replaced with the manufacturer’s specified replacement part to prevent X-ray radiation, shock, fire or other hazards.

  • Page 3: Table Of Contents

    PCB & schematics ....51 Chassis Service Adjustment Procedures . . . 15 A-Board Schematic CT-27SX11E/CE/UE (Left Portion) ......52 140.0V B+ Voltage Confirmation .

  • Page 4: Service Notes

    Service Notes Note: These components are affixed with glue. Be careful not to break or damage any foil under the component or at the pins of the ICs when removing. Usually applying heat to the component for a short time while twisting with tweezers will break the component loose. Leadless Chip Component How to Replace Flat-IC (surface mount)

  • Page 5: Board Designation Table

    * Note: When ordering a replacement board assembly, append an “S” to the board number. Example: To order the A-Board for CT-27SX31E, the replacement board is TNP2AH025BAS. To order the A-Board for CT-27SX11E, the replacement board is TNP2AH025S. - 5 -...

  • Page 6: Receiver Feature Table

    Receiver Feature Table FEATURE\MODEL CT-27SX11E/UE/CE CT-27SX31E/UE/CE Chassis NA8MS Tunning system # of channels Menu language Eng/Span/Fr Closed Caption V-Chip (USA/CANADA) Picture in Picture 75Ω Ω Ω Ω input Remote Model # EUR511502 EUR511500 Picture tube PF 4:3 Picture tube Supplier...

  • Page 7: Location Of Controls (Receiver)

    Location of Controls (Receiver) Front A/V Jacks (Inside Control Panel) POWER VOLUME CHANNEL ACTION TV/VIDEO Remote Control Sensor Figure 2. Location of Controls (Receiver). Quick Reference Control Operation Quick Reference Control Operation Power Button - Press to turn ON or OFF. Volume Buttons - Press to adjust Sound Level, or to adjust Audio Menus, Video Menus, and select operating features when menus are displayed Channel Buttons - Press to select programmed channels.

  • Page 8: Location Of Controls (Remote)

    Component function buttons. TV/VIDEO Button Press to select TV or Video input. EUR511500 EUR511502 CH (channel) Buttons CT-27SX31E/CE/UE CT-27SX11E/CE/UE Press to select channels. Use with volume buttons to navigate in menus. Figure 3. Location of Controls (Remote). - 8 -...

  • Page 9: Disassembly For Service

    Disassembly for Service Back Cover Speakers Speakers are assembled to the speaker dome with Remove all the screws marked with an arrow( 4 screws. The speaker/Dome assy is secured to from the back of the Receiver. the Speaker Bracket (horn) with 2 screws. Note: Screw configuration, type, and number of screws vary depending on the model of the Receiver serviced and...
  • Page 10 Disassembly for Service (Continued) Note: To remove the four brackets holding To remove and remount the dag ground braid: a.Unhook the coil spring from the bottom corners the degauss coil from the corners of of the CRT ears. the CRT, first remove the CRT from b.Release the braid loop from the upper corners of the cabinet, then remove the Brackets the CRT ears.

  • Page 11: Back Cover Removal

    Back Cover Removal • 3 screws at the top edge of the Receiver. • 2 screw by the A/V jacks. • 1 screw by the antenna jacks. • 1 screw at each lower corner of the Receiver. • 1 screw by the retainer plate of the AC power cord. •...
  • Page 12 Rear View Wedge Yoke Geo-magnetic Coil CRT Anode, HV Deflection Yoke Speaker C-Board Bracket Speaker Dome Speaker Degauss Coil S-Board (Some Models) S-Board RF Splitter Rear AV Jacks P-Board (Some Models) Note: After servicing the receiver, remember to dress the cables, as shown above. - 12 -...

  • Page 13: Main Components Location

    Main Components Location Main Chassis IC003 Front AV Jacks Keypad Remote Sensor IC002 IC551 EEPROM 9V Reg IC001 IC101 IC6501 IC552 3L Comb Filter 5V Reg IC750 H Amp IC2331 IC2301 VAO Amp Audio Amp Q551 H Out IC3001 AV SW TUNER TNR001 Rear AV Jacks...
  • Page 14 Main Components Location IC4802 GeoMagnetic IC4801 GeoMagnetic F801 FUSE Q801 IC351 IC1801 SOCKET IC2101 TUNER VIF, SIF TNR002 - 14 -...

  • Page 15: Chassis Service Adjustment Procedures

    Chassis Service Adjustment Procedures All service adjustments are factory preset and should not require adjustment unless controls and/or associated components are replaced. Note: Connect the (-) lead of the voltmeter to the appropriate ground. Use heat sink when the HOT ground symbol ( ) is used.

  • Page 16: High Voltage Check

    High Voltage Check 1. Select an active TV channel and confirm that 3. Confirm B+ 140.0V is within limit. horizontal is in sync. 4. Using a high voltage meter confirm that the High 2. Adjust Brightness and Picture using Picture Icon Voltage is 30.55kV ±...

  • Page 17: Dynamic Corvergence Adjustment

    Adjust the Purity rings to set the vertical green raster Dynamic Convergence Adjustment precisely at the center of the screen (see Fig. 13). Use this for a precisely overall convergence adjust at the edges. NOTES: DY(Y ) Adjustment 1. CRT warm up with white screen Adjustment (VR1 for Horizontal dynamic (three guns activated) is needed to stabilize the shadow mask...

  • Page 18: Permalloy Convergence Corrector Strip (Part No. 0Fmk014Zz)

    Adjustment (precise adjustment) Permalloy Convergence Corrector Strip (Part No. 0FMK014ZZ) 1. Apply a crosshatch pattern. 2. Adjust contrast and brightness customer controls This strip is used in some sets to match the yoke and to obtain a correct picture. CRT for optimum convergence. If the yoke or CRT is 3.
  • Page 19 As the yoke is tilted vertically, the rasters produced outside guns rotate in opposite directions. Figure 17. Vertical Yoke Movement Raster produced from one of the outside electron beams Raster from the other side electron beam R G B Static convergence magnets are set for center convergence As the yoke is tilted horizontally, one raster gets larger while the other gets...

  • Page 20: Service Mode (Electronic Controls)

    Service Mode (Electronic Controls) This Receiver has electronic technology using the I²C Bus Concept. It performs as a control function and it replaces many mechanical controls. Instead of adjusting mechanical controls individually, many of the control functions are now performed by using “On Screen Display Menu”. (The Service Adjustment Mode.) Note: It is suggested that the technician reads all the way through and understand the following procedure for Entering/Exiting the Service Adjustment Mode;...

  • Page 21: Service Mode Regiters

    Press the Power Button on the Remote Control to select the Service Adjustment. For Adjustments: Note: Write Down the original 1.Press Channel Up/Down on the 2.Press Volume Up/Down on the Remote Control to select one of value set (b in Fig. 20 ) for Remote Control to adjust the the available Service Adjustments each...
  • Page 22 Press the Power Button on the Remote Control to select the Service Adjustment For Adjustments: Note: Write Down the original 1.Press Channel Up/Down on the 2.Press Volume Up/Down on the Remote Control to select one of value set (b in Fig. 20 ) for Remote Control to adjust the the available Service Adjustments each...
  • Page 23 Press the Power Button on the Remote Control to select the Service Adjustment For Adjustments: 1.Press Channel Up/Down on the Note: Write Down the original 2.Press Volume Up/Down on the Remote Control to select one of value set (b in Fig. 20 ) for Remote Control to adjust the the available Service Adjustments each...
  • Page 24 Press the Power Button on the Remote Control to select the Service Adjustment Adjustments: Note: Write Down the original 1.Press Channel Up/Down on the 2.Press Volume Up/Down on the value set (b in Fig. 20 ) for Remote Control to select one of Remote Control to adjust the the available Service Adjustments each...
  • Page 25 Press the Power Button on the Remote Control to select the Service Adjustment For Adjustments: Note: Write Down the original 1.Press Channel Up/Down on the 2.Press Volume Up/Down on the Remote Control to select one of value set (b in Fig. 20 ) for Remote Control to adjust the the available Service Adjustments each...
  • Page 26 To Check Purity: Press the Recall Button on the Remote Control when in Service Mode (red “CHK” is displayed) to enter the Purity Field Check Mode. NORMAL SCREEN Press Recall again to select desired field. BLUE GREEN WHITE SCREEN SCREEN SCREEN SCREEN Figure 21.

  • Page 27: Instructional Flow Chart For Service Mode

    Instructional Flow Chart for Service Mode IMPORTANT NOTE: Always Exit the Service Mode Following Adjustments. NORMAL MODE Momentary short FA1 to FA2 AGING MODE • Yellow “CHK” appears in upper left corner of screen. WHITE • Volume Up/Down operate rapidly. SCREEN •...
  • Page 28 Instructional Flow Chart for Service Mode - Continued CUT-OFF ADJUSTMENTS. C ITEMS. ON REMOTE CONTROL TO Adj. SELECT ADJUSTMENT needed? ON REMOTE TO ADJUST VOL VOL THE LEVEL POWER (ON REMOTE) PINCUSHION ADJUSTMENTS. D ITEMS. ON REMOTE CONTROL TO Adj. SELECT ADJUSTMENT needed? IMPORTANT NOTE:...
  • Page 29 Instructional Flow Chart for Service Mode - Continued PIP ADJUSTMENTS. P ITEMS. ON REMOTE CONTROL TO Adj. SELECT ADJUSTMENT needed? ON REMOTE TO ADJUST VOL VOL THE LEVEL IMPORTANT NOTE: Always Exit the Service Mode Following Adjustments. POWER (ON REMOTE) OPTIONS ADJUSTMENTS.

  • Page 30: Service Adjustments (Electronic Controls)

    Service Adjustments (Electronic Controls) Sub-Contrast Adjustment Service DAC Adjustment (B02, B03) 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: 3 IRE 1. Apply a Black-White pattern. 2.

  • Page 31: Pip Sub-Contrast Adjustment (P03)

    PIP Sub-Contrast Adjustment (P03) 4. Observe the oscilloscope waveform at Horizontal rate and adjust the Service Mode Sub-Bright DAC Procedure: (B02) level until a scanning period of 2.4V above 1. Connect the oscilloscope to TPY1. DC ground is measured, as indicated in Fig. 28. 2.

  • Page 32: Horizontal Centering (D00)

    Service Adjustments (Electronic Controls, cont.) Horizontal Centering (D00) Corner PCC Adjustment (D0B) This Adjustment helps to center the picture horizontally Preparation: 1. Apply a Crosshatch pattern Preparation: 2. Normalize the Picture Icon Video adjustments. Connect a monoscope pattern signal. Procedure: Procedure: 1.

  • Page 33: V-Correction Adjustment (D02)

    V-Correction Adjustment (D02) Stereo Separation Adjustment (M01 & M02) Preparation: 1. Apply a Crosshatch pattern. Preparation: 2. Adjust (D01) so that V-Size is regular size. 1. Connect an RF signal generator to the RF antenna 3. If b-a<-1.5mm (in top and bottom), increase (D02) input.

  • Page 34: Clock Adjustment (S07)

    Service Adjustments (Electronic Controls, cont.) Clock Adjustment (S07) 3. Calculate based following formula: Preparation: Connect the frequency counter to TPS1 (IC001 pin 13 Hz pin-13) and cold ground ( S 07 – 873.90625 Note: Frequency Counter probe capacitance should be 8pF or less. Figure 36.

  • Page 35: Audio Signal Path Block Diagram

    Audio Signal Path Block Diagram Figure 38. Audio Signal Path Block Diagram. - 35 -...

  • Page 36: Pip Video Signal Path Block Diagram

    Video Signal Path Block Diagram No-PIP Models Figure 39. No-PIP Video Signal Path Block Diagram. - 36 -...

  • Page 37: 2-Tuner Video Signal Path Block Diagram

    Video Signal Path Block Diagram 2-Tuner PIP Models Figure 40. 2-Tuner PIP Video Signal Path Block Diagram. - 37 -...

  • Page 38: Parts List

    REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION C331 TCJ2VF1H103Z CAP,C .01UF-Z-50V...
  • Page 39 REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION C556 ECWH20182JVY CAP,P 1500PF-J-2KV...
  • Page 40 REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION CAP,C .1UF-Z-50V CAP,E 33UF-16V...
  • Page 41 REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION C2335 ECA1HM010B CAP,E 1UF-50V CAP,E 330UF-6.3V...
  • Page 42 REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION D001 MA165TA5VT DIODE, SWITCHING...
  • Page 43 REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION IC2331 NJM4565L VAO AMP.
  • Page 44 REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION Q861 2SB1011QRL TRANSISTOR...
  • Page 45 REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION RES,M 22K-J-1/10W R351...
  • Page 46 REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION R486 ERJ6GEYJ473V RES,M 47K-J-1/10W...
  • Page 47 REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION R856 ERQ3CJ3R9 RES,F 3.9-J-3W...
  • Page 48 REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION CONTROL 10K R2354...
  • Page 49 REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION RES,M 330-J-1/10W R6514...
  • Page 50 REPLACEMENT PARTS LIST Model:CT-27SX31E/UE/CE & CT-27SX11E/UE/CE Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO. DESCRIPTION ACCESORIES M011 TEK6940...

  • Page 51: C-Board Voltages

    C- Board Schematic, Layout & Voltages - Diagrama Eléctrico, Diagrama Impreso y Voltajes Tarjeta-C ALL MODELS Schematic Notes Resistors are carbon 1/4W unless noted (BOLD LINE) indicates the otherwise. route of B+ supply. IDENTIFICACIÓN DE TERMINALES Capacitors are ceramic 50V unless noted The schematic diagrams are current at PARA TRANSISTORES EN CHIP otherwise.

  • Page 52: (Left Portion)

    CT-27SX11E/ CE/ UE A-Board Schematic, Left Portion - Diagrama Eléctrico de la Tarjeta-A, Sección Izquierda - 52 -...

  • Page 53: A-Board Schematic Ct-27Sx11E/Ce/Ue (Right Portion)

    A-Board Schematic, Right Portion - Diagrama Eléctrico de la Tarjeta-A, Sección Derecha CT-27D11E/ CE/ UE SCHEMATIC Medición de Voltajes Medición de voltaje: Las mediciones de los voltajes son nominales y pueden variar El voltaje de entrada al Receptor hasta 10% en componentes en es de 120V de Corriente Alterna.

  • Page 54: (Left Portion)

    CT-27SX31E/ CE/ UE A-Board Schematic, Left Portion - Diagrama Electrico de la Tarjeta-A, Sección Izquierda - 54 -...

  • Page 55: A-Board Schematic Ct-27Sx31E/Ce/Ue (Right Portion)

    A-Board Schematic, Right Portion - Diagrama Eléctrico de la Tarjeta-A, Sección Derecha CT-27SX31E/ CE/ UE 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 COMPONENTS DESIGNATED WITH A THE SCHEMATIC.

  • Page 56: A-Board Pcb

    ALL MODELS A-Board Layout - Diagrama Impreso de la Tarjeta-A - 56 -...

  • Page 57: A-Board Voltages

    A-Board Voltages - Voltajes Tarjeta- A ALL MODELS IC001 IC101 IC3001 Q002 Q003 Q004 Q005 Q006 ..0.00 ..2.07 ..4.00 ..3.33 .

  • Page 58: P-Board Schematic

    ALL MODELS P-Board Schematic, Layout & Voltages - Diagrama Impreso, Eléctrico y Voltajes Tarjeta-P - 58 -...

  • Page 59: P-Board Pcb & Voltages

    P- Board Layout & Voltages - Circuito Impreso y Voltajes Tarjeta-P ALL MODELS IC4802 IC4801 ..0.00 ..1.29 ..0.65 ..0.00 ..8.75 .

  • Page 60: S-Board Schematic, Pcb & Voltages

    CT-27SX31E/ CE/ UE S -Board Schematic Diagram, Layout and Voltages - Tarjeta S, Diagrama Eléctrico, de Circuito Impreso y Voltajes Voltage Measurements Voltage measurement: Voltage readings are nominal IC2101 Q2101 and may vary ±10% on active AC input to the Receiver is 120V. devices.

  • Page 61: Y-Board Schematic, Pcb & Voltages

    Y- Board Schematic, Layout & Voltages - Circuito Eléctrico, de Circuito Impreso y Voltajes Tarjeta-Y CT-27SX31E/ CE/ UE IC1801 ..0.00 ..3.24 ..1.39 ..3.24 .

  • Page 62: A-Board Waveforms

    ALL MODELS A-Board Waveforms - Formas de Onda Tarjeta A Waveforms - A-Board 1.0-1.1V p-p [20µs] 3.9-5.4V p-p [20µs] 4.1-4.2V p-p [5ms] 178.0-180.0V p-p [20µs] 344.0-348.0V p-p [5µs] IC3001 PIN 36 (VIDEO) (R OUT) Q802 Collector IC101 PIN 33 (VERT OUT) Q501 Collector (H DRIVE) TP47R 503KHz X’tal...
  • Page 63 PARTS LIST ABBREVIATIONS GUIDE RESISTOR TYPE TOLERANCE Carbon ± 1% Fuse ± 5% Metal Oxide ± 10% Solid ± 20% Wire Wound ± 2% RES, C 270-J-1/4 CAPACITOR TYPE TOLERANCE Ceramic ± 0.25pF Electrolytic ± 0.5pF Polyester ± 1pF Styrol ±...
  • Page 64 ® Printed in USA K01062225CM0706 - 52 -...

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