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What This Guide Helps With
Troubleshooting a motion or control lockout that will not enable or release due to settings, controls, power, accessories, or service-level faults.
Step-by-Step Troubleshooting
1. Protect the Patient and Maintain Safe Bed Positioning
Do not troubleshoot a stuck lockout while a patient depends on the affected function for safe positioning, respiratory support, transfer, fall prevention, or emergency care.
Notify clinical staff. Transfer the patient to another verified bed when required, especially when necessary head, height, or surface movement is unavailable.
Expected outcome: The patient is safely supported without dependence on an unavailable or unexpectedly enabled function.
Remove the bed from service if the lockout prevents essential positioning or allows movement that cannot be safely controlled.
2. Confirm the Exact Lockout Condition
Determine whether:
- A function remains locked when it should be enabled
- A function remains enabled when it should be locked
- The lock indicator is stuck
- Only patient controls are affected
- Caregiver controls are also affected
- One motion or all motions are affected
- The problem is continuous or intermittent
Test only while the bed is unoccupied or the patient is safely transferred.
Expected outcome: The affected control group and lockout direction are clearly identified.
If only one control surface is affected, troubleshoot that control rather than assuming a central lockout failure.
3. Verify Bed Power and Startup
Confirm that the bed is connected to a functioning approved receptacle. Inspect the power cord and verify that the bed completes normal startup.
Test an unrelated powered function and observe whether controls respond normally.
Expected outcome: The bed has stable power and normal basic control operation.
If a power interruption caused an incomplete startup and normal operation returns after approved power restoration, verify all lockouts and troubleshooting can stop.
4. Review Normal Lockout Controls
Use the normal caregiver control panel to identify which functions are intentionally locked.
Confirm the correct control sequence using approved user-facing labels or authorized documentation. Do not enter restricted service menus.
Expected outcome: The selected lockout state matches the displayed indicators and intended clinical setting.
If the function was unintentionally locked and releases normally, test the motion and troubleshooting can stop.
5. Check for Multiple Control Locations
Inspect all available caregiver controls, side-rail controls, patient pendants, and approved external controls.
A lock command from one control location may affect operation elsewhere. Look for a damaged or continuously pressed button.
Expected outcome: No second control location is maintaining or reapplying the lockout.
If disconnecting an approved removable control causes the lockout to function normally, remove that accessory from service and verify operation with a known-good control.
6. Inspect Buttons and Control Surfaces
Inspect the affected lockout button and surrounding panel for:
- Cracked overlay
- Liquid contamination
- Residue
- A button held down by tape or a cover
- Physical deformation
- Loose panel
- Impact damage
- Delayed or absent tactile response
Clean only according to approved methods. Do not inject cleaner into the controls.
Expected outcome: The control surface is clean, dry, undamaged, and no button is mechanically held.
If removing external interference restores normal lockout operation, verify repeated engagement and release and troubleshooting can stop.
7. Test Lockout and Motion Response
With the bed unoccupied:
Enable the motion.
Verify the function moves from applicable controls.
Activate the lockout.
Verify the intended controls no longer move the bed.
Release the lockout.
Verify normal motion returns.
Repeat for the affected head, knee, foot, height, or patient-control function.
Expected outcome: The lockout state and motion response agree during each test.
A lockout indicator that changes without changing the actual motion state requires service-level evaluation.
8. Check for a Specific Motion Fault
Verify whether the affected bed motion works from any authorized control when unlocked.
If the indicator shows that the function is enabled but the section still does not move, the problem may be an actuator, control, or motion-system fault rather than a stuck lockout.
Expected outcome: Lockout failure is separated from an unrelated motion failure.
Do not document a lockout failure when the actual cause is a nonmoving actuator or failed control.
9. Inspect Accessible Control Cables and Connections
Disconnect AC power and follow facility procedures before inspecting accessible pendant cables, side-rail harnesses, and control connectors.
Look for loose connections, pinched cables, damaged insulation, bent connector housings, contamination, or strain caused by bed movement.
Reseat only accessible connectors intended for service access. Do not open control panels or internal controller enclosures.
Expected outcome: External control wiring is secure and undamaged.
If securing an accessible connector restores normal lockout behavior, complete repeated testing of all controls before return to service.
10. Test With a Known-Good Removable Control
When applicable, substitute a compatible approved known-good pendant or external control.
Do not swap internal boards or side-rail assemblies as an external troubleshooting step.
Expected outcome: The known-good control either restores normal lockout operation or confirms that the fault remains within the bed.
If the known-good control corrects the issue, replace the defective accessory and verify all control and lockout functions.
11. Complete Final Functional Verification
Verify each relevant lockout and motion combination:
- Caregiver controls
- Patient controls
- Head motion
- Knee motion
- Foot motion
- Height motion
- Any applicable pendant
- Lock indicators
- Repeated locking and unlocking
Confirm that locked functions remain disabled and unlocked functions operate reliably.
Expected outcome: All lockout states accurately control the intended functions without unintended movement or loss of control.
Troubleshooting can stop when complete and repeatable operation is verified.
If the Problem Persists
Common external causes such as unintended settings, secondary controls, stuck buttons, contamination, removable accessories, power, and accessible connections have been ruled out.
The remaining cause may involve a control-panel assembly, side-rail control, internal harness, controller input, configuration, software, or motion-control system.
The bed should be:
- Removed from service when essential movement is unavailable or cannot be safely locked
- Labeled Out of Service
- Sent for repair or bench evaluation
- Evaluated using appropriate Stryker documentation and approved test equipment
- Repaired or configured only by qualified personnel
Do not bypass a lockout or return the bed to service with an indicator that does not match actual motion behavior. After repair, verify every affected control and motion state before return to service.
Knowing when to stop external troubleshooting is proper troubleshooting.
Clinical Use Tip
Confirm both the indicator and the actual movement response; a displayed lockout state alone does not prove that motion is safely disabled.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Nursing reported that the patient head controls remained locked even after the head lockout indicator was cleared."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found liquid residue causing the patient-control button to remain continuously activated."
Resolution
What action was taken.
Example:
"Removed the bed from use, cleaned the control surface using the approved method, and verified repeated head-control lock and unlock operation from caregiver and patient controls."
Helpful Details to Include (If Known)
- Motion or control group affected
- Locked or unlocked state reported
- Indicator behavior
- Caregiver and patient controls tested
- Removable pendant condition
- Stuck or contaminated buttons
- AC and battery operation
- Accessible cable condition
- Known-good control test
- Actual motion response
- Repeated lockout verification
- Final device status
Final Thought
Protect the patient, distinguish a true lockout fault from a motion or control failure, verify actual movement rather than indicators alone, escalate safely, and document the complete result.
That is successful troubleshooting.