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LA76931 Datasheet PDF - ETC

Part Number LA76931
Description Color TV Receiver
Manufacturers ETC 
Logo ETC Logo 



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LA76931 datasheet, circuit
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SERVICE MANUAL
Color Television Receiver
Model: -SZ2(MONO) series
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LA76931 equivalent
Power supply
wwwc.DhaetcakShineeptu4tUv.coolmtage ―→ check voltage of C910 anode ―→ check Pin 3 of N901 ―→ check V901 ―→
check output voltage of T901 secondary coil ―→check voltage of N904,N905 Pin 3(5.0v) and N903 Pin3
(9.0V) ―→check voltage of N103 Pin 8,31,32,35,36,43,55(5v) and Pin11,19(8v)―→ check voltage of N602
Pin 8 (+5V)
Audio circuit
check power supply of audio power amplify circuit ―→ check input audio signal of audio power amplify
circuit ―→ check waveform of N103 Pin 5―→ check waveform of xs808 Pin 16,17―→ check waveform of
N201 Pin 8,10
Horizontal circuit
Check voltage of T402 Pin 3 (110V) ―→ check voltage of N103 Pin 19 (+9.0V) ―→ check waveform of
V401 Base ―→ check waveform of V402 Collector ―→ check output voltage of T402 coil ―→ check
waveform of T402 Pin 8
Vertical circuit:
check voltage of N440 Pin 2 (+25V) and Pin7(+9V)―→ check voltage of N103 pin 19 (+9V) ―→ check
waveform of N103 Pin 17 ―→ check waveform of N440 Pin 1 ―→ check waveform of N440 Pin 5
MCU circuit:
check voltage of N103 Pin 31,32(5v) ―→ check waveform of N103 Pin 33
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Information Total 20 Pages
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