Panasonic TH-37PWD6UY Service Manual

Contents

Components identified by mark have special characteristics important for safety.When replacing any of these components, use only manufacture's specified parts.Important Safety NoticeNotes:1. ResistorAll resistors are cabon 1/4W resistor, unless marked as follows:Unit of resistance is OHM [ ] (K=1,000, M=1,000,000).: Nonflammable : Metal Oxide: Solid : Metal Film: Wire Wound : Fuse:2. CapacitorAll capacitors are ceramic 50V capacitor, unless marked as follows:Unit of capacitance is F, unless otherwise noted.: Temperature Compensation : Electrolytic: Polyester : Bipolar: Metalized Polyester : Dipped Tantalum: Polypropylene : Z-Type3. CoilUnit of inductance is F, unless otherwise noted.4. Test Point: Test Point position5. Earth Symbol: Chassis Earth (Cold) : Line Earth (Hot)6. Voltage MeasurementVoltage is measured by a DC voltmeter.Conditions of the measurement are the following:Power Source ...................................................AC 120V, 50/60Hz(UY VERSION model)/AC220-240V, 50/60Hz(Except UY VERSION)Receiving Signal ............................................... Colour Bar signal (RF)All customer's controls ...................................... Maximum positions7. Number in red circle indicates waveform nember.(See waveform pattern table.)8. When arrow mark ( ) is found, connection is easily found from the direction of arrow9. Indicates the major signal flow. : Video Audio10. This schematic diagram is the latest at the time of printing and subject to change withoutnotice.+-Mm TZNPTH-42PW6/TH-42PWD6Schematic Diagram NotesRemarks:1. The Power Circuit contains a circuit area which uses a separate power supply to isolate theearth connection.The circuit is defined by HOT and COLD indications in the schematic diagram. Take thefollwing precautions.All circuits, except the Power Circuit, are cold.Precautionsa. Do not touch the hot part or the hot and cold parts at the same time or you maybe shocked.b. Do not short- circuit the hot and cold circuits or a fuse may blow and parts maybreak.c. Do not connect an instrument, such as an oscilloscope, to the hot and coldcircuits simultaneously or a fuse may blow.Connect the earth of instruments to the earth connection of the circuit beingmeasured.d. Make sure to disconnect the power plug before removing the chassis.2. Following diodes are interchangeable.MA150- MA162 (Replacement part)TH-42PW6/TH-42PWD6Schematic Diagram Notes14 Block and Schematic Diagrams14.1. Schematic Diagram NotesTH-42PW6EX / TH-42PW6BX / TH-42PWD6EX / TH-42PWD6BX / TH-42PWD6UY53