Pioneer PDP-5030HD Product Training Manual page 17

Y- Drive Block
The Y- Drive PCB receives Scan and Y – Drive signals from the
Digital Video Assembly's drive sequence generator. Scan signals
are processed by the logic block and sent out to the upper and
lower scan drive assembly's. The Y – Drive signals ( YSUS up,
YSUS down, YSUS B plus and YSUS ground are also sent to the
logic block. The four signals are sent out in parallel to the upper
and lower sustain pulse generators. The drive signal output from
the sustain pulse generators are controlled by reset, offset and
mask FET's shown in each block to obtain the Panel Sustain signal
sent to the upper and lower scan drive modules. This module also
contains a DC to DC converter, dew detect and over current detect
circuits.
17.