Rfdb, Sfdb - Ricoh Neptune-P1 Service Manual

6. Details
VDB (Video Drive Board)
The VDB controls the LPH and the algorithms to convert video data.
CGB PP
This is the high voltage power supply for the charge corona wire, development bias, and charge corona
grid.

RFDB, SFDB

6
The RFDB and SFDB are on the bottom plate of the drawer in the optional roll sheet feeder.
RFDB (Roll Feed Drive Board)
The RFDB, on the floor panel of the roll feeder, controls the motors, solenoids, and clutches for the two
paper rolls in the roll sheet feeder.
SFDB (Sheet Feed Drive Board)
The SFDB, on the left side of the paper cassette unit, controls the paper feed mechanisms for the optional
paper cassette.
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