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Panasonic CT-20G7DF-1 Service Manual
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Panasonic CT-20G7DF-1 Service Manual

Panasonic CT-20G7DF-1 Service Manual

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Service Manual
Since "-1" and non dash models have different PCB layouts and parts;
When servicing any of these models please confirm the model number
before starting service so the correct manual is used.
This supplement service manual is issued to ADD the models of the NA7DM family listed above to the simplified
service manual order No. MTNC020515A1 (CT-20D12F). Included in this supplement service manual are unique
characteristics and a complete parts list. Please file and use this simplified service manual together with the simplified
service manual order No. MTNC020515A1 (CT-20D12F) and the main service manual order No. MTNC010305C1
(CT-32D11E).
"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-20G7DF-1
CT-20D12DF-1
CT-2017F-1
Important notice:
ORDER NO. MTNC021096A1
B1
Color Television
Simplified Manual
(NA7DM)
Panasonic
Copyright 2002 by Matsushita Electric Corporation of
America. All rights reserved. Unauthorized copying
and distribution is a violation of law.
Chassis
DP391
EP391
DP391

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Summary of Contents for Panasonic CT-20G7DF-1

  • Page 1 ORDER NO. MTNC021096A1 Service Manual Color Television Simplified Manual (NA7DM) Panasonic Models Chassis CT-20G7DF-1 DP391 CT-20D12DF-1 EP391 CT-2017F-1 DP391 Important notice: Since “-1” and non dash models have different PCB layouts and parts; When servicing any of these models please confirm the model number before starting service so the correct manual is used.

  • 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

    Important safety notice ....2 Safety precautions ....2 General guidelines .

  • 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.

  • Page 5: X-Ray Protection Circuit Check

    Service notes (continued) IMPORTANT: To protect against possible damage to Procedure: the solid state devices due to arcing or static discharge, 1. Connect receiver to isolator transformer. make certain that all ground wires and CTR DAG wire 2. Apply a monoscope pattern. are securely connected.

  • Page 6: Receiver Feature Table

    Receiver feature table FEATURE\MODEL CT-20G7DF-1 CT-20D12DF-1 CT-2017F-1 Chassis No DP391 EP391 DP391 Family NA7DM Number of channels Menu language ENG/SPAN/FR Closed Caption V-Chip (USA/CANADA) 75 Ω input Remote Model number EUR501450 EUR511502 EUR501450 Picture tube Supplier SAMSUNG Comb Filter 2 DIG...

  • Page 7: Boards Designation

    Boards designation MODELS BOARD PART NUMBER BOARD DESCRIPTION A-Board TNP2AH048DR MAIN BOARD CT-2017F-1 CT-20G7DF-1 C-Board TNP2AA124AF CRT BOARD Table 1: Boards designation Boards designation MODELS BOARD PART NUMBER BOARD DESCRIPTION A-Board TNP2AH048DS MAIN BOARD CT-20D12DF-1 C-Board TNP2AA124AF CRT BOARD Table 2: Boards designation *Note: When ordering a board, add and ”S”...

  • Page 8: Parts List

    REPLACEMENT PARTS LIST Models: CT-20G7DF-1, CT-20D12DF-1, CT-2017F-1 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 C351 TCJ2VB1H391K...
  • Page 9 REPLACEMENT PARTS LIST Models: CT-20G7DF-1, CT-20D12DF-1, CT-2017F-1 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 C800 ECKR3A391KBP...
  • Page 10 REPLACEMENT PARTS LIST Models: CT-20G7DF-1, CT-20D12DF-1, CT-2017F-1 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 D2352 MA2C165001VT...
  • Page 11 REPLACEMENT PARTS LIST Models: CT-20G7DF-1, CT-20D12DF-1, CT-2017F-1 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 RELAYS R092...
  • Page 12 REPLACEMENT PARTS LIST Models: CT-20G7DF-1, CT-20D12DF-1, CT-2017F-1 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 R470 ERDS2TJ152T RES,C 1.5K-J-1/4W...
  • Page 13 REPLACEMENT PARTS LIST Models: CT-20G7DF-1, CT-20D12DF-1, CT-2017F-1 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 S008 EVQPF106K...

  • Page 14: Foldouts Notes

    Notes IMPORTANT SAFETY NOTICE CHIP TRANSISTOR THIS SCHEMATIC DIAGRAM INCORPORATES SPECIAL LEAD DESIGNATION FEATURES THAT ARE IMPORTANT FOR PROTECTION FROM X-RADIATION, FIRE AND ELECTRICAL SHOCK HAZARDS. WHEN SERVICING ESSENTIAL THAT ONLY MANUFACTURERS SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS DESIGNATED WITH A IN THE SCHEMATIC.
  • Page 15 Notas: NOTA DE SEGURIDAD DIAGRAMAS ELÉCTRICOS INCLUYEN CARACTERÍSTICAS ESPECIALES MUY IMPORTANTES IDENTIFICACIÓN DE TERMINALES PARA TRANSISTORES EN CHIP PARA PROTECCIÓN CONTRA RAYOS-X, QUEMADURAS Y DESCARGAS ELÉCTRICAS. CUANDO SERVICIO IMPORTANTE USAR PARA REEMPLAZO COMPONENTES CRITICOS, SOLO PARTES ESPECIFICADAS POR EL FABRICANTES. LOS COMPONENTES CRITICOS ESTAN SEÑALADOS EN LOS DIAGRAMAS POR EL SIMBOLO NOTAS DE LOS DIAGRAMAS...
  • Page 16 TNP2AH048DR - 16 - CT-2017F-1, CT-20G7DF-1...
  • Page 17 CT-2017F-1, CT-20G7DF-1 - 17 - TNP2AH048DR...
  • Page 18 TNP2AH048DR CT-2017F-1, CT-20G7DF-1 - 18 -...
  • Page 19 CT-2017F-1, CT-20G7DF-1 TNP2AH048DR - 19 -...
  • Page 20 CT-2017F-1, CT-20G7DF-1 TNP2AH048DR - 20 -...
  • Page 21 CT-2017F-1, CT-20G7DF-1, CT-20D12DF-1 TNP2AA124AF - 21 -...

  • Page 22: A-Board Tnp2Ah048Ds

    TNP2AH048DS CT-20D12DF-1 - 22 -...
  • Page 23 CT-20D12DF-1 TNP2AH048DS - 23 -...
  • Page 24 CT-20D12DF-1 TNP2AH048DS - 24 -...
  • Page 25 CT-20D12DF-1 TNP2AH048DS - 25 -...
  • Page 26 CT-20D12DF-1 TNP2AH048DS - 26 -...
  • Page 27 NOTES: - 27 - NOTES...

  • Page 28: A & C-Pcb Board

    A & C PCB BOARD ALL MODELS - 28 -...
  • Page 29 ALL MODELS - 29 - A & C PCB BOARD...
  • Page 30 Printed in USA K02102597PL1113...

This manual is also suitable for:

Ct-20d12df-1Ct-2017f-1

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