Panasonic TH-65PX600U Service Manual page 68

50PX60 Scan Operation
The SC Board consists of buffers and drivers used to generate the scan
signals for the PDP panel. The buffers provide isolation between the D board
and the drivers. the drive voltages as well as to switch the FET transistors.
Connector SC20 provides the the trigger signals from the D board to switch
the FETs on and off to create the distinctive scan signal. Each trigger signal
switches a drive FET creating a portion of the waveform.
After the scan waveform is developed on the SC Board, it is applied to the
SU and SD boards for de-multiplexing. The signal is input to a series of shift
registers that handle the de-multiplexing operation. There are six driver ICs
on the SU board and six on the SD board.
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