Service manual

Section - VIII Sampling Station BT3000 PLUS Rev. 0, Soft Ver. 8 Page 6 of 10
The new design of the sampling module integrates the entire sampling system
into a single module with the following features:
a) Autonomous testing of the module before incorporating into the analyzer
b) Compact hydraulic circuit providing stabilized flow efficiency
c) Hydraulic circuit hidden from view for safety
d) Technical assistance facilitated by the ability to substitute components with
other tested sampling modules
8-3.1. SERUM PLATE CONTROLLERS
The serum plate controllers are a group of various electronic circuits applied to the
removable sampling module. The main controller circuit is housed in a metallic
container located near the serum chamber. The additional circuits are firmly
secured to the rim of the serum chamber. These electronic circuits perform the
following functions:
a) Control of the serum plate stepper motor
b) Acquisition and management of the barcode data of the serum plate
c) Control of the Hall sensor for "home" or zero position
d) Control of sensors detecting primary tube sensor presence
8-3.2. SERUM PLATE CONTROLLER BOARD (15-04422-01)
This board housed in a metallic container accommodates the µC764, which
controls the serum stepper motor through the U4 and U5 opto-couplers, and the
A1 driver. The barcode data is acquired and processed through the U3 MAX232
chip. The module receives the data from the Hall sensor at the zero position,
connected to J2, as well as the signals from primary tube sensors incorporated in
their independent circuits located on the left and right of the serum chamber.