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Choice Medical MD300C - Possible Problems and Resolutions

Choice Medical MD300C Fingertip Pulse Oximeter - Problems and Resolutions

Possible Problems and Resolutions

Problem: Spo2 or PR does not displayed

Possible reason: Finger is not inserted correctly

Solution: Re-insert the finger

Possible reason: Patient's SpO2 value is too low to be measured

Solution: Increase your hands' blood circulation by rubbing them gently toegether for a few minutes. Try a few more times. If you can make sure that no problem exists in the product, please go to a hospital for exact diagnosis

Problem: Spo2 or PR reading is unstably

Possible reason: Finger is not inserted correctly.

Solution: Re-insert the finger

Possible reason: Excessive patient movement

Solution: Restrict patient / oximeter movement.

Possible reason: Patient has heart flutter or atrial fibrillation.

Solution: Try some more times. If you can make sure about no problem existing in the product, please go to a hospital for exact diagnosis

Problem: The Oximeter cannot be powered on

Possible reason: No battery or dead battery

Solution: Replace batteries

Possible reason: Batteries might be installed incorrectly

Solution: Reinstall the batteries

Possible reason: The Oximeter might be damaged

Solution: Contact local customer service centre

Problem: Display suddenly turns off

Possible reason: The oximeter will automatically powered off when no signal is detected in 8 seconds

Solution: Normal

Possible reason: Battery power is low

Solution: Replace batteries

Problem: "Error3" or "Error4" displayed on screen

Possible reason: Battery power is low

Solution: Replace batteries

Possible reason: Receiving tube being shielded or damaged together with broken connector.

Solution: Please contact local customer service centre

Possible reason: Mechanical Misplace for receive-emission tube

Solution: Please contact local customer service centre

Possible reason: Amp circuit malfunction.

Solution: Please contact local customer service centre

Problem: "Error7" displayed on screen

Possible reason: Battery power is low

Solution: Replace batteries

Possible reason: Emission tube damaged.

Solution: Please contact local customer service centre

Possible reason: Current control circuit malfunction.

Solution: Please contact local customer service centre

Error Codes (latest updated from manufacturer)

  • Err 1: program memory damaged.
  • Err 2: data memory damaged.
  • Err 3: sensor Red Emission Tube damaged.
  • Err 4: sensor Infrared-ray Emission Tube damaged.
  • Err 5: sensor Infrared-ray Receipt Tube damaged.
  • Err 6: exterior crystal oscillator damaged.
  • Err 7 & Err 8: sensor emission tube or receipt tube damaged.
  • Err 9: real time clock damaged.
  • Err 10: EEPROM chip damaged.

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