Diatron ABACUS 4 - Valve Boards

Abacus 4 Service Manual
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The back side of the board holds the connectors for the Sample rotor and a ribbon cable
connection to the COMB.
2.1.8. Valve boards
There are two kinds of valve boards: Valve board 1-5 and Valve board 6-12.
The instrument has 6 valves in Valve board 6-12 module. The valve boards are connected to
controller and driver chips located on the PPB.
Opto switches & LEDs for Horizontal motor
Opto switches & LEDs for Vertical motor
LEDs for Sample rotor
Connections for Horizontal &
Vertical motors
Valves
Valve Board
Connection to PPB