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What This Guide Helps With
Use when the analyzer has no power, stalls during startup, or does not reach a ready state after normal initialization.
Step-by-Step Troubleshooting
1. Protect Testing Continuity and Patient Results
Stop relying on the analyzer for patient testing until normal operation is confirmed. Redirect specimens to another validated analyzer or approved laboratory workflow if necessary. Do not repeatedly restart equipment while active testing is in progress.
Expected outcome: Patient testing continues safely on an alternate validated system while troubleshooting is performed.
2. Confirm the Exact Startup Failure
Determine whether the analyzer is completely unpowered, powers on but the display remains unavailable, begins initialization and stops, or reaches an abnormal status. Record any displayed message or subsystem identified by the normal user interface.
Expected outcome: The failure is narrowed to loss of power, workstation/display availability, or an initialization problem.
3. Verify Facility Power
Confirm the analyzer's accessible power connections are fully seated and applicable power switches are in their normal operating positions. Inspect cords and plugs for damage, looseness, heat, or contamination. Verify the supplying receptacle or approved power source is operational using an appropriate test method.
Expected outcome: Stable facility power is confirmed at the analyzer. If restoring an external power connection allows normal startup, troubleshooting can stop after functional verification.
4. Check External Support Equipment
Verify any required external workstation, monitor, network-connected component, or approved power-conditioning equipment associated with normal startup is powered and connected. Do not bypass facility electrical protection or approved power devices.
Expected outcome: All external components required for normal analyzer operation are powered and available.
5. Inspect Accessible Connections and Covers
Check externally accessible cables, communication connections, covers, drawers, and panels that must normally be closed or seated for operation. Look for a recently disturbed connection, partially closed access point, obvious obstruction, fluid spill, or physical damage.
Expected outcome: Accessible connections and closures are secure with no obvious physical condition preventing initialization.
6. Review Environmental Conditions
Confirm ventilation openings are unobstructed and the analyzer is not exposed to unusual heat, moisture, condensation, leaks, or recent facility work that could affect operation. Stop if there is smoke, burning odor, abnormal heat, or evidence of liquid intrusion.
Expected outcome: The surrounding environment is suitable for operation with no immediate electrical or environmental hazard.
7. Perform One Controlled Restart When Appropriate
If the analyzer is not actively processing specimens and no unsafe condition is present, perform only the normal shutdown/startup process available to qualified personnel. Avoid repeated power cycling if initialization fails in the same way.
Expected outcome: The analyzer completes initialization and reaches its normal ready condition. If successful, proceed to final verification.
8. Perform Final Functional Verification
Confirm the analyzer remains powered, completes initialization without recurring faults, recognizes its normal external components, and reaches the expected operational state. Complete required operational checks before returning it to patient testing.
Expected outcome: Normal startup and readiness are demonstrated without recurrence. Troubleshooting can stop and the analyzer may be returned to service when all required checks pass.
If the Problem Persists
Common external power, connection, closure, and environmental causes have been ruled out. The remaining problem may involve an internal power subsystem, controller, computer, communication path, sensor, or startup configuration requiring service-level evaluation.
Remove the analyzer from service, label it Out of Service, and send it for repair or qualified bench/on-site evaluation. Further evaluation should use appropriate Beckman Coulter documentation and approved test equipment. Internal repair or configuration changes should be performed only by qualified personnel.
Do not continue repetitive power cycling or intrusive troubleshooting. Return the analyzer to service only after the underlying problem is corrected and required functional testing confirms reliable initialization and operation.
Knowing when to stop external troubleshooting and escalate is proper troubleshooting.
Clinical Use Tip
Before troubleshooting a failed startup, ensure time-sensitive specimens are redirected to another validated analyzer so patient testing is not delayed.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Laboratory staff reported the DxC 700 AU would power on but would not complete initialization."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found an external communication cable associated with the workstation partially disconnected."
Resolution
What action was taken.
Example:
"Clinical Engineering reseated the connection, restarted the analyzer normally, and verified complete initialization and ready status."
Helpful Details to Include (If Known)
- Exact point where initialization stopped
- Displayed message or status
- AC power status
- Outlet or approved power source verification
- Condition of power cords and plugs
- External workstation status
- Accessible cable condition
- Recent shutdown, power event, spill, or facility work
- Result of controlled restart
- Final analyzer status
Final Thought
Start with patient safety and testing continuity, verify external power and connections before assuming internal failure, and escalate when reliable initialization cannot be restored. Document the complaint, verified cause, corrective action, and final functional status clearly.
That is successful troubleshooting.