Service manual
PN 4237242C
2.3-7
INSTRUMENT DESCRIPTION
FLUIDICS PANEL
2
Individual Components Mounted to Fluidics Panel
The following individual components are mounted directly on the Fluidics Panel:
Cycle Counter and Air Solenoids
The front left portion of the lower chassis houses the cycle counter, solenoids LV9 and LV12,
and the lyse pump PM5 (Figure 2.3-1).
Solenoids LV9 and LV12 control the air pumped from peristaltic pump PM1. LV9 selects
which bath gets mixing bubbles and LV12 routes air for the lyse line air gap.
Diluent Reservoir
The diluent reservoir is located on the left side of the instrument. See Figure 2.3-1. This is a
diluent tank into which diluent from the external source is pulled and temporarily stored.
Having a diluent reservoir in the instrument minimizes the effect of diluent height, especially
for the RBC aperture sweep flow, and the need to prime diluent after the instrument has been
sitting for a while. An added bonus is that any bubbles pulled into the reservoir from the
external diluent system dissipate in the reservoir and are not pulled into the diluter. The
reservoir has its own optical sensor, used to control the fluid level in the reservoir.
Flex Connect Card
The Flex Connect card is located in the lower chassis (Figure 2.2-2) and serves the same
interface function as the Solenoid Interconnect card. It provides a convenient connector
location for additional Fluidics Panel components and also provides an LED power indicator
for several of them.
The most prominent connector is J1, the flex cable from the Probe/Wipe Traverse Assembly.
This cable has the up and down probe sensor and probe motor wires. Table 2.3-3 shows the
various connectors and their association.
r Cycle counter and air solenoids r Lyse pump (PM5
r Diluent reservoir r Solenoid Interconnect card
r Flex Connect card r Vacuum regulator.
Table 2.3-3 Flex Connect Card Connectors and LEDs
Connector Component LED
J1 Flex cable No LED
J2 Out to Motor/Solenoid Driver card No LED
J3 S10 - Waste sensor No LED
J4 S9 - Lyse sensor No LED
J5 S8 - Diluent sensor No LED
J6 LV9 - Air/Mix Select solenoid CR1
J7 LV12 - Bath Mix Select solenoid CR2
J8 Vacuum pump CR3
J9 Cycle counter CR4
J10 Lyse pump CR5