Panasonic gp6d th-42px20u th-50px20u th-42pa20u th-37pa20u update information Service Manual

Figure 11 

 
On the DG-Board, the sync signals retrieved from the input device enter the sync 
switch (IC8071). The selected sync signals are output to the D-Board via pins 31, 
32, and 34 of connector DG3/D3. The sync signals then enter a level shifter IC, 
IC9023, to change the DC Level from 5 to 3.3 volts. The output signals of IC9023 
enter IC9009 for conversion into digital pulses. IC9605, the Sync Processor and 
Discharge Control circuit, produces the Sustain control pulses, the Scan control 
pulses, and the data timing pulse for the data drive circuit boards. 
 
 
 
 
 
 

 

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