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What This Guide Helps With
Troubleshooting failure to reach ready status, unresponsive exposure controls, interrupted exposure attempts, or imaging failure caused by external conditions.
Step-by-Step Troubleshooting
1. Ensure Patient and Radiation Safety First
Remove the room from clinical use until reliable exposure operation is confirmed. If a patient is awaiting imaging, direct staff to another functional radiographic room or approved alternate imaging method.
Do not troubleshoot exposure failure with a patient positioned for examination. Do not initiate test exposures unless authorized under site radiation-safety procedures, with the room cleared and an approved test receptor or phantom in place.
Expected outcome: No patient is exposed to repeated, incomplete, or unreliable radiographic attempts during troubleshooting.
2. Confirm the Exact Failure Condition
Obtain the complaint from staff and reproduce only the non-exposure portion of the workflow, when possible. Determine whether the issue is:
- Generator will not display or indicate ready status.
- Hand switch does not respond at the preparation stage.
- Ready status occurs, but no exposure occurs.
- Exposure begins but terminates prematurely.
- Exposure completes, but no image appears at the DR workstation.
- Error code, warning, audible tone, or abnormal status light is present.
The RADspeed Pro generator console indicates generator status using illumination and audible signaling, and equipped hand switches illuminate to indicate ready status. Configuration and optional accessories may vary by installation.
Expected outcome: The failure is separated into preparation/ready, exposure activation, or post-exposure image-acquisition categories.
3. Inspect the Room Power and Generator Startup Condition
Verify that the radiographic system, generator console, detector/workstation components, and any associated room control equipment are powered on normally.
Check for:
- Tripped emergency-off switch or room safety shutdown condition.
- Generator console blank, frozen, or displaying a startup fault.
- Abnormal indicator lights, audible alarms, odor, heat, or unusual noise.
- Any power interruption reported immediately before the failure.
Do not reset breakers or access internal generator components unless permitted by facility procedure and manufacturer-trained service practices.
Expected outcome: The system completes startup without visible power-related faults. If power is unstable or the generator will not initialize normally, stop and escalate for service.
4. Record Displayed Error Codes and Generator Status Indicators
Observe the generator console, tube-support display, and DR workstation for error codes, preparation warnings, exposure-inhibit messages, or failed communication indications.
Document:
- Exact displayed message or error code.
- Whether ready status appears.
- Whether the hand switch illuminates.
- Whether an audible ready or fault tone occurs.
- Whether the condition is constant or intermittent.
The RADspeed Pro generator is described by Shimadzu as having self-diagnostic functionality with error-code display.
Expected outcome: A repeatable symptom or code is documented for troubleshooting and possible service escalation.
5. Confirm Examination Selection and Exposure Setup
Verify that an appropriate exam or APR selection has been made and that exposure parameters are populated at the generator and, when integrated, synchronized with the DR system.
Check for:
- No exam selected at the acquisition workstation.
- Incomplete patient/exam registration preventing readiness.
- Invalid or missing exposure parameters.
- Selection of the wrong receptor, table, or wall-stand workflow.
- AEC selection when the intended receptor or setup does not support the selected mode.
On integrated RADspeed Pro configurations, APR and radiographic parameter information may be synchronized between the DR system, tube support, and high-voltage generator.
Expected outcome: A valid, appropriate examination setup is present and the system can proceed toward ready status. If correcting the exam/setup restores ready indication, verify function safely and return to service only after normal operation is confirmed.
6. Inspect the Hand Switch and External Exposure-Control Connection
With the system removed from patient use, visually inspect the exposure hand switch and its accessible cable/connector, when equipped with a wired switch.
Check for:
- Damaged cord, crushed insulation, stretched cable, or loose connector.
- Sticky, cracked, or mechanically abnormal preparation/exposure button action.
- Intermittent hand-switch illumination when the cable is stationary.
- Evidence of fluid ingress or impact damage.
For installations equipped with optional alternate exposure controls, such as an approved foot switch or wireless hand switch on applicable configurations, determine whether the complaint is isolated to one control method or affects all exposure controls. Do not substitute unapproved accessories.
Expected outcome: The exposure control is intact and properly connected. If a known-compatible approved control identifies a failed hand switch, remove the defective accessory from service and document replacement or repair.
7. Determine Whether the Generator Reaches Ready Status
Using the approved non-patient workflow, press the preparation stage of the exposure control and observe whether the generator enters ready state.
Check for:
- Ready indication at the console.
- Ready illumination at the hand switch, when equipped.
- Fault indication appearing before ready status.
- Ready state that drops out unexpectedly without proceeding to exposure.
Expected outcome: The generator reaches and maintains ready status as expected. If it cannot reach ready status after external setup and control checks, suspect an exposure-inhibit condition, generator fault, tube-related issue, AEC/receptor issue, or communication problem requiring further evaluation.
8. Check Detector, Bucky, and DR Acquisition Readiness
For DR-equipped systems, verify that the selected detector and acquisition workstation are available for the intended exposure.
Inspect externally for:
- Detector not recognized, offline, uncharged, or assigned incorrectly.
- Detector improperly seated in the table or vertical stand receptor location.
- Acquisition workstation displaying a detector, exam, or communication error.
- Incorrect table versus wall-stand selection.
- Bucky/receptor condition preventing the intended exposure workflow.
Expected outcome: The selected image receptor and workstation indicate readiness for acquisition. If restoring detector or workstation readiness permits normal exposure preparation, confirm system function according to site policy.
9. Evaluate AEC and Manual Exposure Behavior Safely
If the failure occurs only during an AEC-based examination and site policy permits controlled testing, compare behavior using an approved manual technique and appropriate test setup.
Do not make clinical exposures for troubleshooting. Do not bypass safety controls.
- If manual preparation/exposure operates normally but AEC-based operation does not, suspect an AEC selection, receptor setup, phototimer, or related configuration issue.
- If both manual and AEC workflows fail, the issue is more likely in the generator readiness/exposure chain, exposure control, detector integration, or internal system fault.
Expected outcome: The issue is narrowed to an AEC-specific path or a broader generator/exposure failure.
10. Check for Exposure Completion Versus Image-Transfer Failure
When staff reports “no exposure” or “no image,” determine whether an exposure actually occurred but the image failed to appear.
Review, as permitted by site policy:
- Whether the console indicated exposure completion.
- Whether the DR workstation recorded an exposure event.
- Whether dose or exposure information populated after the attempt.
- Whether an image is pending, rejected, unmatched, or not transferred.
Expected outcome: True failure to generate an exposure is distinguished from acquisition, processing, or image-transfer failure. If the exposure occurred but the image did not display or transmit, follow the detector/workstation/image-transfer troubleshooting pathway instead of repeating exposures.
11. Perform an Authorized Functional Verification
After correcting an external cause, perform only the functional verification allowed by department and radiation-safety procedures.
Confirm:
- Generator reaches ready status reliably.
- Exposure control operates consistently.
- Approved test exposure completes when required and authorized.
- Image acquisition occurs at the intended receptor.
- No error codes, unusual sounds, odor, heat, or intermittent behavior remain.
Expected outcome: The system performs consistently through the approved test workflow. If the issue returns, remove the system from service and escalate.
If the Problem Persists
If the generator will not achieve ready status, the hand switch remains unresponsive after external checks, exposure fails or interrupts, or error codes persist, common external causes have been ruled out and the issue is likely related to an internal generator, exposure-control circuit, tube preparation path, AEC circuit, interlock, or system communication fault.
The device should be:
- Removed from service.
- Labeled Out of Service.
- Sent for repair or bench/vendor evaluation according to department procedure.
Do not attempt internal generator repair, exposure-circuit bypass, high-voltage troubleshooting, or repeated test exposures without appropriate service authorization and radiation-safety controls. Knowing when to stop is proper troubleshooting.
Clinical Use Tip
Never troubleshoot a radiographic exposure failure on an active patient. Move the patient to a known-working imaging system first, and avoid repeat exposure attempts until the cause is understood and safe operation is verified.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Radiology reported that the Shimadzu RADspeed Pro would not indicate ready status and would not initiate an exposure from the hand switch."
Cause
What was observed during troubleshooting.
Example:
"Verified normal room power and exam setup, but the generator failed to reach ready status and displayed a repeatable exposure-related fault after hand-switch and detector readiness checks."
Resolution
What action was taken.
Example:
"Removed the RADspeed Pro room from service, labeled the system Out of Service, documented the displayed fault and operating condition, and escalated for generator/exposure-chain service evaluation."
Helpful Details to Include (If Known)
- Room power and emergency-off condition checked
- Generator startup condition and status lights observed
- Exact error code or displayed message
- Hand-switch illumination and button response
- Hand-switch cable/connector condition
- Table versus vertical stand receptor selected
- Detector readiness and battery/connection condition
- DR workstation communication status
- AEC versus manual workflow behavior
- Whether exposure completed but image failed to display
- Unusual sound, odor, or heat noted
- Functional verification performed under approved procedure
- Final device status
Final Thought
Reliable radiographic exposure operation requires a logical check of safety, power, setup, exposure controls, detector readiness, and system messages before internal failure is assumed. Proper escalation prevents unnecessary patient exposure and complete CCR documentation supports efficient repair.
That is successful troubleshooting.