DOWNLOAD Panasonic TX-20LA70F / TX-20LA70P / TX-20LA7F / TX-20LA7P Service Manual ↓ Size: 7 MB | Pages: 28 in PDF or view online for FREE

Model
TX-20LA70F TX-20LA70P TX-20LA7F TX-20LA7P
Pages
28
Size
7 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / GLP21L CHASSIS
File
tx-20la70f-tx-20la70p-tx-20la7f-tx-20la7p.pdf
Date

Panasonic TX-20LA70F / TX-20LA70P / TX-20LA7F / TX-20LA7P Service Manual ▷ View online

 
Schematic Diagrams  
 
 
 
 
 
 
 
NOTE 
 
1. RESISTOR 
All resistors are carbon ¼W resistor, unless marked otherwise. 
Unit of resistance is OHM (
Ω) (k=1,000, M=1,000,000) 
2. CAPACITORS 
All capacitors are ceramic 50V unless marked otherwise. 
Unit of capacitance is 
μF unless otherwise stated. 
3. COIL 
Unit of inductance is 
μH, unless otherwise stated. 
 
4. TEST 
POINT 
   Test 
Point 
Position 
 
 
 
5. EARTH 
SYMBOL 
 
   Chassis 
Earth 
(Cold) 
 
   Line 
Earth 
(Hot) 
 
 
6. VOLTAGE 
MEASUREMENT 
Voltage is measured by a D.C. voltmeter. 
Measurement conditions are as follows: 
Power source 
 
 
a.c. 220V-240V, 50Hz 
Receiving Signal  
 
Colour Bar signal (RF) 
All customer controls 
Maximum position 
 
7.  
 
   
 
Indicates the Video signal path 
 
   
 
Indicates the Audio signal path 
 
 
These schematic diagrams are the latest at time of printing   and are subject to change without notice. 
 
REMARKS 
 
a.  Do not touch the hot part, or the hot and cold parts at the same time, as you are liable to a shock hazard. 
b.  Do not short circuit the hot and cold circuits as electrical components may be damaged. 
c. 
Do not connect an instrument, such as an oscilloscope, to the hot and cold circuits simultaneously as this may cause 
fuse failure. Connect the earth of the instruments to the earth connection of the circuit being measured. 
d.  Make sure to disconnect the power plug before removing the chassis. 
 
NOTE 
 
1.  The Power Supply 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. All circuits, except the Power Circuit, are 
 COLD. 
 
 
 
 
 
21
IMPORTANT SAFETY NOTICE 
Components identified by     
mark have special characteristics 
important for safety. When replacing any of these components, use 
only manufacturers' specified parts. 
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