Getinge Servo-i

Touchscreen or Control Knob Unresponsive

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Asset Type

Ventilator

Manufacturer

Getinge

Model

Servo-i

What This Guide Helps With

Troubleshooting an unresponsive touchscreen, rotary control, direct-access knob, or fixed key caused by panel lock, contamination, obstruction, software state, or control-panel failure.

Step-by-Step Troubleshooting

1. Ensure Patient Safety First

Do not troubleshoot unreliable ventilator controls while the Servo-i is supporting an active patient.

Notify respiratory therapy and the clinical team immediately. Transfer the patient to another verified ventilator or approved ventilation method according to facility procedures. Confirm that ventilation, oxygenation, and alarms are functioning correctly on the replacement equipment.

Expected outcome: The patient is safely supported without relying on a ventilator whose settings may not be adjustable.

Continue Clinical Engineering troubleshooting only after the affected Servo-i has been removed from patient use. The manufacturer specifies that service mode is not to be used with a patient connected.

2. Confirm Which Controls Are Affected

Determine whether the problem affects:

Observe whether the screen display continues updating and whether alarms remain visible and audible.

Expected outcome: The failure is narrowed to a particular control, screen region, or complete user-interface problem.

If the control begins responding normally and remains stable during repeated testing, continue with operational verification before returning the ventilator to service.

3. Check for Panel Lock

Open the Menu, when possible, and determine whether the control panel has been intentionally locked. The Servo-i includes a Panel Lock function that can prevent unintended control changes.

Unlock the panel using the facility-approved operating procedure and test the touchscreen and knobs again.

Expected outcome: Controls respond normally after the panel lock is disabled.

If this resolves the issue, complete a pre-use check and functional verification, document the finding, and stop troubleshooting.

4. Inspect the Screen and Controls for External Obstruction

Inspect the front panel for:

Clean the exterior only with an approved method and allow the surface to dry completely. Do not spray liquid directly onto the user interface.

Expected outcome: The screen and controls are clean, dry, unobstructed, and mechanically free.

If cleaning or removing an obstruction restores reliable operation, perform repeated control checks and stop if the issue does not recur.

5. Test the Main Rotary Dial Correctly

Select an adjustable parameter on the touchscreen, then rotate the Main Rotary Dial and press it to confirm the selection.

The normal adjustment sequence uses the touchscreen to select a parameter, the Main Rotary Dial to change the value, and either the dial or touchscreen to confirm it.

Be aware that the Main Rotary Dial may temporarily become inoperative when a defined parameter safety limit is reached. This brief behavior may be normal rather than a hardware failure.

Expected outcome: The selected value changes smoothly, and pressing the dial confirms the selection.

If the dial responds in other menus or with other parameters, verify that the original setting was not already at a permitted limit.

6. Test the Direct Access Knobs

Rotate each Direct Access Knob individually and press it to confirm the selected value. The Servo-i uses four Direct Access Knobs whose assigned parameters vary with the selected ventilation mode.

Check for:

Do not force a knob that is physically stuck.

Expected outcome: Each applicable knob changes and confirms its assigned parameter consistently.

If only one knob fails while the other controls function normally, suspect a localized encoder, knob, or user-interface assembly problem and proceed toward repair evaluation.

7. Check the Display and Touch Alignment

Touch several widely separated areas of the screen using normal finger pressure. Confirm that the activated screen area matches the location touched.

Look for:

Expected outcome: Each touchscreen area activates accurately and consistently.

A dead zone, inaccurate selection, or pressure-sensitive response strongly suggests a touchscreen or front-panel assembly fault.

8. Inspect User-Interface Connections Externally

Confirm that the user-interface module is correctly seated and secured to the ventilator configuration, with no visible looseness, impact damage, pinched cables, or damaged external connection points.

Do not open the user-interface housing or reseat internal connectors unless authorized by the applicable service documentation and facility policy.

Expected outcome: The user interface is mechanically secure with no visible connection or mounting problem.

9. Perform a Controlled Restart

With the ventilator removed from patient use:

Record any technical error message, restart prompt, frozen screen, unusual delay, or control-panel alarm.

Expected outcome: The ventilator completes startup and all controls respond normally.

If restarting temporarily restores operation, do not assume the problem is corrected. Repeat the control checks and evaluate the unit for an intermittent software, communication, or user-interface failure.

10. Run the Pre-Use Check

Complete the manufacturer-required pre-use check with the ventilator disconnected from a patient.

Confirm that:

Expected outcome: The ventilator passes the complete pre-use check without control or user-interface errors.

If the pre-use check cannot be started or completed because the controls remain unreliable, remove the ventilator from service.

11. Verify Reliable Operation Before Return to Service

Repeatedly test representative touchscreen areas, the Main Rotary Dial, all applicable Direct Access Knobs, and fixed keys.

Use a test lung and verify that settings can be selected, adjusted, confirmed, and canceled without delayed or unintended responses.

Expected outcome: All controls operate accurately and consistently through repeated testing.

Do not return the Servo-i to clinical use if the failure is intermittent, localized to part of the screen, or temporarily corrected only by restarting.

If the Problem Persists

The common external causes—including panel lock, contamination, obstruction, incorrect control use, temporary software state, and external mounting issues—have been ruled out.

The problem is likely associated with the touchscreen assembly, rotary encoder, membrane controls, user-interface electronics, internal cabling, or system communication. The Servo-i service documentation identifies the touchscreen, membrane buttons, Main Rotary Dial, and Direct Access Knobs as components of the user-interface control system.

The ventilator should be:

Knowing when to stop and escalate an unreliable control interface is proper troubleshooting.

Clinical Use Tip

Never troubleshoot an unresponsive ventilator control while the device is supporting a patient. A control may appear usable yet fail when an urgent setting change is required. Move the patient to another verified ventilator first and troubleshoot only when safe.

Work Order Documentation (CCR Method)

CCR = Complaint, Cause, Resolution

Complaint

What was reported by the clinical staff.

Example:
"Respiratory therapy reported that the Servo-i touchscreen and Main Rotary Dial intermittently failed to respond when attempting to change ventilation settings."

Cause

What was observed during troubleshooting.

Example:
"Inspection found no panel lock or external obstruction, and the touchscreen remained unresponsive in multiple areas after cleaning and a controlled restart."

Resolution

What action was taken.

Example:
"Removed the ventilator from service, labeled it Out of Service, and routed it for user-interface assembly evaluation and complete performance verification."

Helpful Details to Include (If Known)

Final Thought

Reliable control input is essential to safe ventilator operation. Begin with patient safety and external causes, test each control logically, and escalate when the interface is inaccurate or intermittent. Clear CCR documentation helps identify recurring failures and supports safe repair decisions.

That is successful troubleshooting.

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