PN 177196BB
8-6
SYSTEM DIAGNOSTICS AND MAINTENANCE
ACCESSING AND IDENTIFYING ANALYZER HARDWARE COMPONENTS
Drain/debubble baths Prevents any contamination from going back into the baths when mixing bubbles
are dispensed into the baths.
Flow cell Houses and provides path through apertures for DC gain and absorbance
measurements. (Not shown. Inside optical bench)
Front door interlocks Prevent the Analyzer from cycling when the left or the right front door are open.
Hgb photometer Measures light transmittance through the optical part of the DIL 1/HGB bath for
Hgb determination.
Horizontal traverse assembly Supports the vertical traverse assembly and moves it horizontally over the baths
for distribution of the sample.
Needle position switches Update the computer with the position of the piercing needle and identify the
Analyzer as not an OV instrument.
Troubleshooting Tip: If these switches are misadjusted, the software may identify
the Analyzer as an OV instrument.
Optical bench assembly Houses the flow cell, the DIFF lamp, and the Optical Preamplifier card, and
provides adjustments for these components.
Output area full switch Tells the system that the cassette output tray is full (ten cassettes) and stops
Analyzer until Operator removes cassettes.
Piercing mechanism motor Drives the gear mechanism that moves the needle for piercing the cap of the
specimen tube.
Power switch Turns power to Analyzer off and on.
Probe home sensor Detects when the sampling probe is in its home position.
Reagent heating coil assembly Preheats the reagent used to make the dilutions.
Reagent syringes assembly Contains five syringes that draw a measured quantity of reagent and dispense it to
the appropriate bath to make the dilutions. From left to right, the syringes draw:
r Lysing agent for the Hgb (Hgb Lyse).
r Cleaning agent (Rinse).
r Lysing agent for the DIFF (Fix).
r Diluent (Diluent) for all the dilutions except the Diluent used to stop the
cytochemical reaction for the DIFF parameters.
r Lysing agent for the WBC/BASO (WBC Lyse).
Sampling probe Pathway for sample aspiration and dispensing.
Sampling syringe r Aspirates a sample from the specimen tube and distributes portions of that
sample to the DIL 1/HGB, DIFF, and WBC/BASO baths for dilution.
r Removes a sample from the first dilution (made in the DIL 1/HGB bath) and
dispenses it into the RBC bath.
Solenoid valve assemblies LV1 to LV12, LV13 to LV19, LV20 to LV23, LV24 to LV30 , LV31 to LV35
Transfer home sensor Detects when the cassette transfer mechanism is at its home position.
Traverse home sensor Detects when the horizontal traverse assembly is at its home position.
Tube detect switch Detects if a tube is in a cassette position.
Tube height switch Mechanically pushes a high tube down and if it cannot do that, stops the Analyzer
with an alarm.
Table 8.1 Fluidic and Mechanical Modules/Components (Continued)
Component/Module Functions
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