Service manual

PN 4237242C

2.1-4

INSTRUMENT DESCRIPTION

SYSTEM OVERVIEW

The MD II has seven diluter tables or cycles. These are the aspirate, power up, startup,

shutdown, prime, latex and clean bath tables. Chapter 6 has timing charts for all the diluter

tables. Because they are the most useful in describing and troubleshooting instrument

operation, the aspirate cycle and the power-up cycle are described in detail. Make sure that

you use the most recent timing chart when troubleshooting timing concerns. Table 2.1-1

gives a list of the functions that can be used by a diluter table.

Table 2.1-1 Functions the Diluter Table Can Use

Motor Functions Solenoids & Valves S/W Requests

Asp Syringe Fill Vac Xdcr Vent Read Hgb Sample

Asp Syringe Disp Vac Chmbr Vent Read Hgb Blank #1

Dil Srng Fil Vac Select Read Hgb Blank #2

Dil Syringe Disp Sweep Flow WBC/RBC/Plt

Probe Down RBC Aper Vac RBC/Plt DAQ

Probe Up WBC Aper Vac WBC DAQ

Probe Aspirate Bath Drain Sel Vacuum Offset

Probe WBC PRB Wipe Vac Aspirate Key Wait

Probe RBC Air Mix Select Delay

Mix Bubbles Waste Select Zap Red Aperture

Drain Bath Rinse Sel Zap Wht Aperture

Rinse Bath Mix Sel Chk Dil Snsr

Dil Rsvr Fil Prefill Select Wait for Enter

Dil Rsvr Overfill Dil Prefil/Dis Probe Warn

Dil Srng Vlv Dil Overfill

Dil Dispense Shutdown Message

Deliver Lyse Do CBC

Inc. Cycle # Do Diff

Vacuum Pump Print Results

No Selection Rpt Activity