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Manufacturer
Model
What This Guide Helps With
Drive handle, brake, or motor assist problems that affect safe movement, parking, steering, or powered transport of the DRX-Revolution.
Step-by-Step Troubleshooting
Ensure Patient Safety First
Remove the mobile X-ray system from patient use if movement, braking, or steering control is unreliable.
Action:
- Move the unit away from patients, beds, stretchers, staff, and wall-mounted equipment if it can be moved safely.
- If the unit is in a patient care area and cannot be moved safely, secure the area and notify clinical staff.
- Do not continue transporting the unit if the brake does not hold, the drive assist surges, or the handle response is unpredictable.
Expected outcome: The device is no longer creating a movement or collision risk.
Why it matters: A mobile X-ray system is heavy. Brake or motor assist problems can cause injury, equipment damage, or unsafe bedside positioning.
Verify the Reported Problem
Confirm the exact behavior before assuming a drive system failure.
Action:
Ask clinical staff what happened:
- Did the unit fail to move?
- Did it move slowly?
- Did it lurch or surge?
- Did the brake stay engaged?
- Did the brake fail to hold?
- Did the drive handle feel loose, stuck, or unresponsive?
- Did the issue occur after charging, after transport, or after hitting an obstacle?
Expected outcome: The failure mode is clearly identified and documented.
If the unit is unsafe to move, stop troubleshooting and remove it from service.
Check for Obvious Physical Obstruction
Inspect the wheels and base for anything blocking normal movement.
Action:
- Look for debris, cords, linen, tape, packaging, floor mats, cable wraps, or foreign objects caught around the drive wheels or casters.
- Check that the unit is not against a wall, bed, threshold, elevator gap, or uneven floor surface.
Expected outcome: Wheels and casters are clear and able to rotate freely.
If removing an obstruction restores normal movement and braking, return the unit to service after a functional check and document the correction.
Verify the Unit Is Powered On and Fully Awake
The drive assist may not respond normally if the system is off, asleep, booting, or in a restricted state.
Action:
- Confirm the DRX-Revolution is powered on.
- Allow the system to complete startup.
- Check for active system messages, fault indicators, or prompts that may prevent movement.
Expected outcome: The unit is fully powered and ready for controlled movement.
If normal drive operation returns after startup completes, document the behavior and return the unit to service if no fault repeats.
Check Battery Charge Level
Low battery condition may reduce motor assist performance or prevent normal powered movement.
Action:
- Check the battery charge indicator.
- Connect the unit to a known-good AC outlet if charge is low.
- Allow the unit to charge long enough to confirm whether the drive function improves.
Expected outcome: Battery level is adequate for drive assist operation.
If the drive issue only occurs at low battery and resolves after charging, document the battery level and charging result.
Confirm the Unit Is Properly Unplugged Before Transport
Some mobile systems may restrict drive operation when connected to AC power or when the power cord is not properly stowed.
Action:
- Confirm the AC cord is disconnected before attempting to drive the unit.
- Inspect the cord reel or cord storage area.
- Verify the power cord is not dragging, snagged, or caught under the base.
Expected outcome: The unit is free for safe movement and the power cord is not interfering with transport.
If the issue was caused by the cord being connected or caught, correct it, test movement, and stop.
Inspect the Drive Handle for Damage or Binding
The drive handle is a common user interface point for motor assist problems.
Action:
- Inspect the handle for cracks, looseness, fluid residue, sticky movement, bent components, or physical damage.
- Gently move the handle through its normal range without forcing it.
- Check whether the handle returns to neutral correctly.
Expected outcome: The handle moves smoothly and returns to neutral without sticking.
If the handle is physically damaged, sticky, loose, or does not return properly, remove the unit from service for repair.
Check for Brake Release Problems
A brake that remains engaged can feel like drive motor failure.
Action:
- Attempt to move the unit only in a safe, open area.
- Listen and feel for whether the brake releases when the drive handle is activated.
- Check whether the unit resists movement even when drive assist should be active.
Expected outcome: Brake releases smoothly and the unit moves predictably.
If the brake does not release, releases intermittently, or drags, remove the unit from service.
Check for Brake Holding Problems
A brake that does not hold creates a serious safety hazard.
Action:
- Park the unit on a flat surface.
- Confirm whether it remains stationary when the drive handle is released.
- Do not test on a slope or near patients.
Expected outcome: The unit remains stopped when no drive command is applied.
If the unit rolls, creeps, or does not hold position, remove it from service immediately.
Check for Drive Assist Direction and Response
Confirm whether the motor assist responds correctly to forward and reverse commands.
Action:
- In a clear area, slowly test forward and reverse movement.
- Check for delayed response, no response, jerky movement, unexpected acceleration, grinding noise, or uneven drive.
Expected outcome: Drive assist responds smoothly and predictably in both directions.
If the unit surges, hesitates, moves unexpectedly, or only drives in one direction, stop testing and remove it from service.
Inspect Drive Wheels and Casters
Damaged wheels can mimic motor or brake faults.
Action:
- Inspect drive wheels and casters for flat spots, missing tread, loose hardware, cracks, contamination, or material wrapped around the axle area.
- Check whether any wheel appears locked, dragging, tilted, or misaligned.
Expected outcome: Wheels and casters are intact, clean, and rotating normally.
If a wheel or caster is damaged or binding, remove the unit from service for repair.
Check Floor and Environmental Conditions
The issue may be caused by the surface rather than the drive system.
Action:
- Check whether the problem occurs only on carpet, wet floors, thresholds, elevator gaps, ramps, damaged flooring, or high-friction surfaces.
- Move the unit to a flat, dry, open floor area if safe.
Expected outcome: Drive behavior is consistent on a normal hospital floor surface.
If the unit only struggles on a difficult surface but operates normally elsewhere, document the condition and educate staff as appropriate.
Check for Recent Impact or Collision
Drive faults may appear after the base, handle, or wheel area is hit.
Action:
- Inspect the base, bumpers, drive handle, column area, and wheel area for signs of impact.
- Ask whether the unit recently hit a doorway, elevator, bed, wall, or threshold.
Expected outcome: No obvious impact damage is present.
If impact damage is found, remove the unit from service for inspection and repair.
Power Cycle the System Only When Safe
A temporary control issue may clear after a proper restart, but this should not be used to ignore recurring faults.
Action:
- Park the unit safely.
- Power the system down using normal shutdown.
- Wait briefly, then power it back on.
- Check whether the same drive, brake, or motor assist fault returns.
Expected outcome: The system restarts normally and drive assist works without repeated fault messages.
If the fault returns, do not keep power cycling. Remove the unit from service.
Perform a Controlled Functional Check
Before returning the system to clinical use, verify safe transport behavior.
Action:
In a clear area, confirm:
- Forward drive works.
- Reverse drive works.
- The handle returns to neutral.
- Braking engages when the handle is released.
- The unit does not roll when stopped.
- There are no unusual noises, smells, heat, or warning messages.
Expected outcome: The unit drives, stops, and parks safely.
If any part of the movement or braking function remains questionable, remove the system from service.
If the Problem Persists
If the drive handle, brake, or motor assist fault remains after checking power, battery charge, cord status, wheel obstruction, floor condition, handle movement, brake behavior, and visible damage, the likely cause is internal to the drive control, brake assembly, motor assist system, wiring, sensor path, or related control electronics.
The device should be:
- Removed from service.
- Labeled Out of Service.
- Sent for repair or bench evaluation.
Do not continue bedside use or transport if braking, steering, or drive assist is unreliable. Knowing when to stop is proper troubleshooting, especially with a heavy mobile imaging system.
Clinical Use Tip
Do not troubleshoot drive or brake problems near an active patient. Move the patient care need to another mobile X-ray system first, or complete the exam using alternate equipment. A mobile X-ray unit with unreliable braking or motor assist should not be positioned at bedside until safe movement is confirmed.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Clinical staff reported that the Carestream DRX-Revolution would not drive normally and the brake felt like it was staying engaged during transport."
Cause
What was observed during troubleshooting.
Example:
"Checked battery level, AC cord status, wheels, floor condition, and handle movement; no external obstruction was found, and the brake continued to drag during controlled testing."
Resolution
What action was taken.
Example:
"Removed the DRX-Revolution from service, labeled it Out of Service, and sent it for bench evaluation of the brake and motor assist system."
Helpful Details to Include (If Known)
- Outlet tested if charging was involved.
- Battery level at time of failure.
- Whether the unit was connected to AC power.
- Whether the power cord was fully stowed.
- Drive handle condition.
- Forward and reverse drive behavior.
- Brake release behavior.
- Brake holding behavior.
- Wheel or caster condition.
- Any obstruction found around wheels.
- Floor condition where the issue occurred.
- Any warning messages or fault indicators.
- Unusual noises, vibration, heat, or smell.
- Evidence of impact or collision.
- Final device status.
Final Thought
Drive, brake, and motor assist issues on a mobile X-ray system should be treated as safety concerns, not just convenience problems. Start with simple external checks, verify the reported behavior, and stop when movement or braking becomes unpredictable. Clear CCR documentation helps show what was checked, what was ruled out, and why escalation was appropriate.
That is successful troubleshooting.