Mindray A9 Service Manual

6-19
6.3.2.3 Common Failures and Recommended Actions
Error Code Description Recommended Action
Display 1
The calibration value at
21% O2 is too small.
1. Reinstall the O2 cell.
2.
Check whether the O2 sensor is in the 21% O2
environment.
3. Check whether the output voltage of the O2 sensor is
stable in the calibration menu (that is, the AD value
ranges from 150 to 560).
4. Replace the O2 sensor.
Display 2
The calibration value at
21% O2 is too large.
1. Reinstall the O2 cell.
2.
Check whether the O2 sensor is in the 21% O2
environment.
3. Check whether the output voltage of the O2 sensor is
stable in the calibration menu (that is, the AD value
ranges from 150 to 560).
4. Replace the O2 sensor.
Display 3
The calibration value at
100% O2 is too small.
1. Reinstall the O2 cell.
2.
Check whether the O2 sensor is in the 100% O2
environment.
3. Check whether the output voltage of the O2 sensor is
stable in the calibration menu (that is, the AD value
ranges from 523 to 2123).
4. Replace the O2 sensor.
Display 4
The calibration value at
100% O2 is too large.
1. Reinstall the O2 cell.
2.
Check whether the O2 sensor is in the 100% O2
environment.
3. Check whether the output voltage of the O2 sensor is
stable in the calibration menu
(that is, the AD value ranges from 523 to 2123).
4. Replace the O2 sensor.
Display 5
The difference between
the calibration value at
21% O2 and that at
100% O2 exceeds the
threshold.
Replace the O2 sensor.
Display 6
The calibration value at
21% O2 is used to
correct an error at 100%
O2.
1. Replace the O2 sensor.
2. Perform the calibration again.
3. Replace the VCM.
Display 7
The machine is in the
BFCS state.
Set the machine to the EFCS state.
Display 33
The O2 supply pressure
is low.
1. Replace or connect a gas supply.
2.
If the gas supply is normal, check the gas supply
pressure switch.

Mindray A9 Specifications

General

Brand	Mindray
Model	A9
Category	Medical Equipment
Language	English