Radiometer TCM400
Radiometer · Model TCM400
Provides up to six simultaneous measurements of transcutaneous oxygen tension Non-invasiveWorks at sites with poor perfusion Color touchscreen Video tutorials Portable.
Key tips
- ·Most "no output" stim-unit complaints are cable-side - check electrode/lead continuity before assuming a unit fault.
- ·Frame and strap wear on mechanical rehab equipment is a real fall/injury risk - don't defer it as cosmetic.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
Motor / actuator / drive will not run or is weak
HighSymptoms: Traction force not applied, CPM carriage will not move or stalls, drive assist weak, motion one direction only.
Root cause: Worn drive motor / leadscrew / actuator, a hand-control fault, or a control-board fault.
Force / range / position inaccuracy
MediumSymptoms: Set traction force or CPM angle not reached, load cell drifts, carriage overshoots or stalls short.
Root cause: Load-cell / position-sensor drift, a potentiometer fault, or a limit-switch fault.
Hand control / patient-control fault
MediumSymptoms: Hand control unresponsive, the patient stop / reverse button does not work.
Root cause: Worn hand control or a damaged cable.
Frame / bearing / cable wear
MediumSymptoms: Rough or noisy travel, play in the carriage, frayed traction cord or rope.
Root cause: Worn bearings / slides or a frayed cable / cord.
Power / battery fault
LowSymptoms: Will not power on, short battery run time.
Root cause: Power supply / fuse or an aged battery.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Drive motor / leadscrew / actuator
Class Major service partRel. cost $$$R&R Difficult
Load cell / position sensor / potentiometer
Class Major service partRel. cost $$R&R Moderate
Hand control
Class Periodic replacementRel. cost $$R&R Fairly easy
Bearings / slides / traction cord
Class Periodic replacementRel. cost $$R&R Moderate
Power supply / fuse / battery
Class Major service partRel. cost $R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Drive motor / leadscrew / actuator | Major service part | $$$ | Difficult |
| Load cell / position sensor / potentiometer | Major service part | $$ | Moderate |
| Hand control | Periodic replacement | $$ | Fairly easy |
| Bearings / slides / traction cord | Periodic replacement | $$ | Moderate |
| Power supply / fuse / battery | Major service part | $ | Moderate |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Frame and strap wear inspection
- ·Electrode lead continuity check
- ·Annual electrical safety test
Error Codes
Extracted directly from this unit's own service manual.
Cal error, barometerBarometer value invalid when collected at start of calibration
Start a new calibration; if error remains, contact authorized service personnel
Cal error, chamberNo sensor detected in the calibration chamber at start of or during calibration
Place a tcpO2 sensor in the chamber
Cal error, driftThe sensor is rejected during the drift check
Start a new calibration; if error remains, rememrane the sensor and start a new calibration; if error still remains, the sensor is defective. Replace with a new one.
Cal error, sensitivityThe sensor sensitivity is outside the specifications
Remembrane the sensor and start a new calibration; The sensor is defective. Replace with a new one.
Cal error, temperatureThe selected sensor temperature value cannot be reached
Calibrate the sensor; if error remains, the sensor is defective. Replace with a new one.
Calibration requiredThe last calibration has been aborted; Eight hours have passed since the last successful calibration
Perform a calibration
Heater failureThe sensor has been subject to excessive heating; The measured power is outside the measuring range
Calibrate the sensor; if error remains, the sensor is defective. Replace with a new one.
Module disappearedFor unknown reasons, the communication between the monitor and the module has not been satisfactory
Turn the monitor off and on; if error remains, try with another module; if error still remains, contact authorized service personnel
No sensor connectedNo sensor detected in the calibration chamber; The sensor in the calibration chamber is not functioning
Connect a functional tcpO2 sensor
Temp. errorMeasured temperature is outside the measuring range; The two sensor thermistors give different temperatures; The selected sensor temperature cannot be reached; The sensor temperature is too high
Calibrate the sensor; if error remains, the sensor is defective. Replace with a new one.
Temp. warningThe selected sensor temperature cannot be reached
Wait until it is reached
Incorrect password. Try again.Wrong password entered in Technical setup
Try again or use 19100
Incorrect time. Try again.The user has entered an incorrect time format
Enter a valid time format (see the topic Date and time in chapter 3)
Memory lowThe PC has run out of memory
Close irrelevant programs; Turn the monitor off and on
CalibratingAll sensors are being calibrated
MeasuringAt least one of the sensors is measuring
ReadyAll sensors have been calibrated and are ready for use
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: No or low output on a modality / channel
- Fit a fresh applicator / handpiece / electrodes for that modality.
- Substitute a known-good lead / cable.
- Test therapeutic-ultrasound output into a water bath (visible cavitation / warmth) and run the applicator-contact / BNR self-test.
- Try the modality on another unit if available.
- Escalate a confirmed output-stage fault to the OEM.
Symptom: Patient feels nothing / open-circuit on an e-stim channel
- Fit fresh self-adhesive electrodes on well-prepped skin.
- Swap the lead wires.
- Confirm the current ramps and there is no open-electrode alarm.
- Test the channel into a resistive load per the manual.
- Refer the output stage if a good lead set still gives nothing.
Symptom: Unresponsive or erratic touchscreen / parameters will not set
- Power-cycle the unit.
- Recalibrate / re-seat the touchscreen if the touch is offset.
- Check the mains fuse and power supply.
- Confirm the cooling fan runs and the vents are clear.
- Replace the touchscreen or power supply as isolated.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Physical therapy / rehab gym
- Outpatient rehab clinic
- Sports medicine
Documents & Manuals
Safety & Recalls
Synced live from the FDA openFDA API.
- RECALL
Reports have been received about the transcutaneous monitoring system display flickering or monitor becoming non responsive and beeping. This may result in delayed patient monitoring as well as potentially compromise the product performance.
- RECALL
Excessive Drift-the membrane units of the device cause the electrode to exceed performance standards for drift in the first two or more calibrations
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Describe a symptom or error code. Bio answers from this device's own documented error codes, failure modes, parts, and guides.
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