Sysmex CA 500
Sysmex · Model CA 500
A compact fully-automated instrument capable of 5-parameter random analysis for In Vitro Diagnostic use. This instrument incorporates the latest technologies as represented by micro-computers, thus enabling analysis of multiple parameters with increased flexibility. Of PT, APTT, Fbg, Thrombin Time (Coagulation Method), and Antithrombin III (Chromogenic Method: Can be analyzed only with CA-530, CA-540, CA-550 and CA-560), D-Dimer (Immunology Method: Can be analyzed only with CA-550 and CA-560), etc., this instrument is able to analyze 5 parameters simultaneously. In addition, it has a number of functions including preferential processing of STAT samples and a built-in quality control function. Moreover, it allows analyzed data to be displayed and printed out together with reaction curves, thus making it possible to obtain highly reliable analysis results.
Key tips
- ·Run QC controls before trusting any repair - an analyzer that passes self-test can still report clinically wrong results.
- ·Rule out a reagent lot change before opening the instrument - it can look exactly like a hardware fault.
- ·Centrifuge rotors have a hard retirement age/cycle limit regardless of visible condition - don't eyeball it.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
Aperture / flow-cell blockage or partial obstruction
HighSymptoms: Flagged or implausible CBC counts, voteouts, clog alarms, poor precision.
Root cause: Debris or a clot partially blocking a counting aperture or the flow cell.
Sample probe / piercer / valve wear
MediumSymptoms: Short samples, aspiration errors, cap-piercing failures, carryover.
Root cause: Worn or bent sample probe / closed-vial piercer, or a worn shear / segment valve.
Reagent / lyse delivery fault
MediumSymptoms: WBC, HGB or diff results shifted, high background, reagent alarms.
Root cause: Reagent depleted or wrong lot, or a pinch-valve / tubing fault.
Optics / laser fault (diff)
MediumSymptoms: Diff scattergrams abnormal, missing populations, flow-cell or laser alarm.
Root cause: Contaminated or aged flow cell, or the laser / optics.
Vacuum / pressure out of range
MediumSymptoms: Multiple parameter errors, priming failures.
Root cause: Pump or regulator drift.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Sample probe / closed-vial piercer
Class Periodic replacementRel. cost $$R&R Moderate
Shear / segment valve
Class Periodic replacementRel. cost $$$R&R Difficult
Pinch-valve / peristaltic tubing
Class Frequent wear itemRel. cost $R&R Moderate
Flow cell
Class Periodic replacementRel. cost $$$R&R Difficult
System reagents / controls
Class ConsumableRel. cost $$R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Sample probe / closed-vial piercer | Periodic replacement | $$ | Moderate |
| Shear / segment valve | Periodic replacement | $$$ | Difficult |
| Pinch-valve / peristaltic tubing | Frequent wear item | $ | Moderate |
| Flow cell | Periodic replacement | $$$ | Difficult |
| System reagents / controls | Consumable | $$ | Easy |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Daily QC controls run and reviewed
- ·Calibration verification per assay
- ·Routine cleaning and decontamination
- ·Scheduled reagent-path and pump-tubing maintenance
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Sensor / electrode fault or drift / QC failure
- Run the relevant calibration and check the sensor / electrode status screen.
- De-bubble / rinse the measuring path and check for protein deposits.
- Replace an electrode / membrane / sensor cassette at end of life or that fails calibration.
- Confirm the solution pack / reagent cartridge and calibration gas are in date and not empty.
- Re-run QC at the relevant levels before releasing results.
Symptom: Sample not aspirated / clot / inlet alarm
- Run the inlet / preheater clot-removal or rinse routine.
- Inspect the inlet probe and gasket.
- Replace the inlet gasket or probe.
- Confirm free sample aspiration with a QC sample.
- Replace worn peristaltic pump tubing if transport is still poor.
Symptom: Result flagged / questionable vs the clinical picture
- Repeat with a fresh sample / strip / cassette from correctly stored, in-date stock.
- Run the QC controls at each level.
- Confirm the meter / analyzer is coded / calibrated to the current lot.
- Clean the measurement chamber / strip port and the optics per the manual.
- Quarantine the lot if QC fails; refer the analyzer if QC passes but a result still looks wrong.
Symptom: Will not power on / short battery life / strip-port fault (handhelds)
- Fit fresh batteries or confirm the charger / dock.
- Clean the strip-port contacts / optics.
- Try several strips from a fresh vial.
- Replace the battery.
- Replace the meter if it will not read known-good strips.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Central / core laboratory
- Point-of-care testing stations
- Blood bank
- Microbiology lab
Documents & Manuals
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