Stryker System 8

Preventive Maintenance or Electrical Safety Test Failure

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Asset Type

Surgical Power System

Manufacturer

Stryker

Model

System 8

What This Guide Helps With

Addresses failed System 8 PM, performance, inspection, or applicable electrical safety testing while separating handpieces from powered support equipment.

Step-by-Step Troubleshooting

1. Remove Equipment That Fails Required Testing From Clinical Availability

Do not return System 8 equipment to clinical use after a required PM, functional, or electrical safety test has failed until the reason is identified and the required test passes.

Expected outcome: Equipment with an unresolved test failure is unavailable for patient use.

2. Identify Exactly Which Test Failed

Record the specific failed portion of the inspection or PM.

Determine whether the failure applies to:

Do not apply mains-powered electrical safety requirements to a battery-powered component unless the approved procedure specifically requires them.

Expected outcome: The failed requirement is correctly associated with the component being tested.

3. Verify the Test Procedure and Equipment

Confirm that the current approved procedure is being followed and that the correct test equipment, fixtures, adapters, and accessories are being used.

Verify required test equipment is within its applicable calibration status.

Expected outcome: The failure is based on a valid test setup rather than incorrect methodology.

4. Perform a Detailed External Inspection

Inspect the applicable component for:

Expected outcome: Physical condition meets applicable requirements or the damaged equipment is removed from service.

5. Verify Battery and Charging Components

For handpiece performance failures, use a known-good charged compatible battery.

For charger-related failures, verify the AC source, cord condition, charger seating, and battery contacts.

Expected outcome: Battery and charging conditions are either confirmed normal or identified as the cause of the failed PM.

6. Verify Attachments and Accessories

When the PM or performance test uses an attachment or accessory, confirm that it is compatible, correctly installed, and in suitable condition.

Use a known-good component when necessary to distinguish an accessory problem from a handpiece problem.

Expected outcome: The test is performed with verified external components.

7. Investigate an Electrical Safety Failure at the Correct Level

For mains-powered System 8 support or charging equipment, inspect the AC cord, plug, enclosure, and accessible connections before assuming an internal electrical fault.

Confirm that the electrical safety analyzer setup and test configuration match the applicable procedure.

Do not defeat protective grounding or modify equipment to force a passing result.

Expected outcome: An external setup or cord problem is corrected, or a reproducible equipment-side electrical safety failure is confirmed.

8. Repeat the Failed Test

After correcting any identified external cause, repeat the specific failed portion using the approved procedure.

If it passes, complete the remainder of the required PM rather than stopping after the originally failed item.

Expected outcome: The complete required inspection and testing passes. Troubleshooting can stop once documentation is complete.

9. Verify Complete Functional Operation

Before return to service, verify as applicable:

Expected outcome: All required functional and safety tests pass without unresolved abnormalities.

10. Escalate Any Reproducible PM or Safety Failure

If the equipment continues to fail a required test after test setup, battery, accessories, and external conditions have been verified, remove it from service.

Never change test limits or omit a failed test simply to close the PM.

Expected outcome: The equipment is routed for qualified repair or further bench evaluation.

If the Problem Persists

The approved test procedure, test equipment, battery condition, accessories, external connections, physical condition, and applicable electrical safety setup have been verified. A persistent failure may represent internal wear, electrical insulation or grounding problems in mains-powered support equipment, internal mechanical problems, control faults, or another service-level condition.

The affected equipment should be:

After corrective service, repeat all required failed tests and any associated return-to-service testing before clinical release. Knowing when to stop external troubleshooting is proper troubleshooting.

Clinical Use Tip

Apply each PM and electrical safety requirement to the correct System 8 component; the battery-powered handpiece and mains-powered charging equipment should not be treated as identical test subjects.

Work Order Documentation (CCR Method)

CCR = Complaint, Cause, Resolution

Complaint

What was reported by the clinical staff.

Example:
"During scheduled PM, the System 8 charging equipment failed the initial electrical safety evaluation."

Cause

What was observed during troubleshooting.

Example:
"Clinical Engineering found damage to the charger's external AC power cord while the remaining accessible equipment condition was satisfactory."

Resolution

What action was taken.

Example:
"Removed the damaged cord from use, installed the appropriate replacement, and completed the required electrical safety and functional testing successfully before return to service."

Helpful Details to Include (If Known)

Final Thought

A PM failure should trigger verification of the procedure, test setup, component condition, batteries, and accessories before internal failure is assumed. Never alter acceptance requirements to obtain a passing result; correct or escalate the cause and document the verified final condition.

That is successful troubleshooting.

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