Panasonic gp8du gph8du th-37px50u th-42pd50u th-42px50u th-42px500u th-50px50u th-50px500u troubleshooting Manual Do Serviço

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How to determine whether the D board or SS board is defective? 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 61 
 
Note: 
All SUSTAIN CONTROL PULSES are located at pins 3, 4, 5, 6, 7, and 8 of one 
of the C (see the table above) and SS44 connectors. A missing waveform at one of the 
pins with the exception of pin 4 will cause the power LED to blink. 
 
 
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