Table of Contents
Advertisement
Service Manual
This simplified service manual is issued to add listed models to the main service manual, order No. MTNC010306C1
(CT-27G6E); Models CT-27G7DF/DUF are similar to CT-27G6E. A full set of schematics, unique settings, and a com-
plete parts list are included in this simplified manual.
Please file and use this simplified service manual together with main service manual, order No. MTNC010306C1.
"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 Manual.
Copyright 2001 by Matsushita Electric Corporation of America. All rights reserved. Unauthorized copying and distribution is a violation of law.
Color Television
Simplified Manual
(NA7DM)
Panasonic
Models
CT-27G7DF
CT-27G7DUF
CT-27G7SDF
CT-27G7SDUF
ORDER NO. MTNC020101A1
B5
Chassis
JP363
JP363
JP363
JP363
Advertisement
Table of Contents
Related Manuals for Panasonic CT-27G7DF
Summary of Contents for Panasonic CT-27G7DF
-
Page 1: Service Manual
This simplified service manual is issued to add listed models to the main service manual, order No. MTNC010306C1 (CT-27G6E); Models CT-27G7DF/DUF are similar to CT-27G6E. A full set of schematics, unique settings, and a com- plete parts list are included in this simplified manual. -
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 Service Notes. -
Page 4: Service Notes
Service Notes Note: Some components may be affixed with glue. Be careful not to break or damage 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 & Adjustments
IMPORTANT: To protect against possible damage to X-ray Protection Circuit Check & the solid state devices due to arcing or static discharge, Adjustments make certain that all ground wires and CRT DAG wire This test must be performed as final check before the are securely connected. -
Page 6: Receiver Feature Table
Specifications are subject to change without notice or obligation. Dimensions and weights are approximate. * Note: When ordering a replacement board assembly, append an “S” next to the board number. Example: to order the A-Board for CT-27G7DF, the replacement board is TNP2AH040BHS . - 6 -... -
Page 7: Location Of Receiver Controls
Location of Receiver Controls Remote control sensor Figure 2. Location of controls 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: Chassis View
Chassis View HPJ output Front A/V inputs Figure 3. A-Board main components and test points (components within dotted areas are located on trace side) Back S-Video input Back A/V inputs Figure 4. Chassis view - 8 -... -
Page 9: Parts List
REPLACEMENT PARTS LIST Models: CT-27G7DF, CT-27G7DUF, CT-27G7SDF & CT-27G7SDUF 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. REF NO. PART NO. DESCRIPTION REF NO. - Page 10 REPLACEMENT PARTS LIST Models: CT-27G7DF, CT-27G7DUF, CT-27G7SDF & CT-27G7SDUF 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. REF NO. PART NO. DESCRIPTION REF NO.
- Page 11 REPLACEMENT PARTS LIST Models: CT-27G7DF, CT-27G7DUF, CT-27G7SDF & CT-27G7SDUF 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. REF NO. PART NO. DESCRIPTION REF NO.
- Page 12 REPLACEMENT PARTS LIST Models: CT-27G7DF, CT-27G7DUF, CT-27G7SDF & CT-27G7SDUF 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. REF NO. PART NO. DESCRIPTION REF NO.
- Page 13 REPLACEMENT PARTS LIST Models: CT-27G7DF, CT-27G7DUF, CT-27G7SDF & CT-27G7SDUF 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. REF NO. PART NO. DESCRIPTION REF NO.
-
Page 14: Schematic Notes
Schematic 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 Schematic Notes 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: A-Board Schematic
A-Board - 16 -... - Page 17 A-Board A-Board - 17 -...
- Page 18 - 18 - A-Board...
- Page 19 A-Board A-Board - 19 -...
- Page 20 - 20 - A-Board...
-
Page 21: A-Board Ic Voltages
A-Board IC voltages TNP2AH040BH IC001 IC002 IC2201 IC451 ..2.50 ..0.00 ..0.00 ..1.29 ..8.22 ..1.19 . -
Page 22: A & C-Board Layout
A&C-Board - 22 -... - Page 23 - 23 - A&C-Board...
-
Page 24: C-Board Schematic
- 24 - C-Board... - Page 25 A-Board - 25 - C-Board...
- Page 26 A-Board transistor voltagesTNP2AH040BH Q2350 Q008 Q090 Q006 Q051 Q007 7.24 1.44 2.67 2.74 5.00 2.72 0.00 0.00 0.00 0.00 0.00 0.00 0.72 3.39 2.12 3.32 2.67 3.36 Q052 Q050 Q053 Q054 Q505 Q055 5.00 0.00 0.00 5.00 2.44 0.00 0.00 0.00 5.00 5.00...
-
Page 27: A & C-Transistor Voltages
A-BOARD WAVEFORMS -- FORMAS DE ONDA TARJETA-A 3V p-p [20µs] 1V p-p[20µs] 1.4V p-p [20µs] (B OUT) A11-3 TPA5 (VIDEO) IC001 PIN 43 (FB PULSE) 1.0V p-p [20µs] 9.2V p-p [5ms] 234.0V p-p [20µs] IC001 PIN 22 (Y IN) Q501 Collector (H DRIVE) IC451 PIN 2 (VERT IN) 1.54V p-p [5ms] 0.6 p-p [20µs]... - Page 28 ® Printed in USA K02012211PL0131 - 63 -...