Panasonic TX-32LX80Y, Service Manual

Page: 22 / 57

11 Schematic Diagram
11.1. Schematic Diagram Notes
Notes :
1. Resistor
Unit of resistance is OHM [
Ω
] (K = 1 000, M = 1 000 000).
2. Capacitor
Unit of capacitance is µF unless otherwise noted.
3. Coil
Unit of inductance is µF unless otherwise noted.
4. Test Point
: Test Point position
5. Earth Symbol
: Chassis Earth (Cold) : Line Earth (Hot)
6. Voltage Measurement
Voltage is measured using DC voltmeter.
Conditions of the measurement are the following :
Power Source....................AC AUTO 110-240 V, 50/60 Hz
Receiving Signal................Colour Bar signal (RF)
All customer’s controls.......Maximum positions
7. Number in red circle indicates waveform number.
(See waveform pattern table)
8. When an arrow mark ( ) is found, connection is easily found from the direction of the arrow.
9. Indicates the major signal flow: Video Audio
10. This schematic diagram is the latest at the time of printing and subject to change without notice.
Remarks :
1. The Power Circuit contains a circuit area which uses a separate power supply to isolate the earth connection.
The circuit is defined by HOT and COLD indications in the schematic diagram. Take the following precautions:
All circuits, except the Power Circuit are cold.
Precautions:
a. Do not touch the hot part or the hot and cold parts at the same time or you may be shocked.
b. Do not short-circuit the hot and cold circuits or a fuse may blow and parts may break.
c. Do not connect an instrument such as an oscilloscope to the hot and cold circuits simultaneously or a fuse may blow.
Connect the earth of instruments to the earth connection of the circuit being measured.
d. Make sure to disconnect the power plug before removing the chassis.
22
TX-32LX80Y