Mindray A9 Service Manual

7-39
Message
Priority
Cause
Solution
BIS sensor.
BIS Electrode 3 Lead
Off
Low
BIS electrode 3 falls off
from the patient.
1. Check the contact between BIS
sensor electrode 3 and the patient skin.
2. If the problem persists, replace the
BIS sensor.
BIS Electrode 4 High
Imped.
Low
The impedance of BIS
electrode 4 is too high.
1. Check the contact between BIS
sensor electrode 4 and the patient skin.
2. If the problem persists, replace the
BIS sensor.
BIS Electrode 4 Lead
Off
Low
BIS electrode 4 falls off
from the patient.
1. Check the contact between BIS
sensor electrode 4 and the patient skin.
2. Replace the BIS sensor.
BIS Electrode G High
Imped.
Low
The impedance of BIS
electrode G is too high.
1. Check the contact between BIS
sensor electrode G and the patient
skin.
2. If the problem persists, replace the
BIS sensor.
BIS Electrode G Lead
Off
Low
BIS electrode G falls off
from the patient.
1. Check the contact between BIS
sensor electrode G and the patient
skin.
2. If the problem persists, replace the
BIS sensor.
BIS Electrode C High
Imped.
Low
The impedance of BIS
electrode C is too high.
1. Check the contact between BIS
sensor electrode C and the patient
skin.
2. If the problem persists, replace the
BIS sensor.
BIS Electrode C Lead
Off
Low
BIS electrode C falls off
from the patient.
1. Check the contact between BIS
sensor electrode C and the patient
skin.
2. Replace the BIS sensor.
BIS Electrode LE
High Imped.
Low
The impedance of BIS
electrode LE is too high.
1. Check the contact between BIS
sensor electrode LE and the patient
skin.
2. If the problem persists, replace the
BIS sensor.
BIS Electrode LE
Lead Off
Low
BIS electrode LE falls
off from the patient.
1. Check the contact between BIS
sensor electrode LE and the patient
skin.
2. If the problem persists, replace the
BIS sensor.
BIS Electrode LT
High Imped.
Low
The impedance of BIS
electrode LT is too high.
1. Check the contact between BIS
sensor electrode LT and the patient
skin.
2. If the problem persists, replace the
BIS sensor.
BIS Electrode LT
Lead Off
Low
BIS electrode LT falls
off from the patient.
1. Check the contact between BIS
sensor electrode LT and the patient
skin.
2. If the problem persists, replace the
BIS sensor.
BIS Electrode RE
Low
The impedance of BIS
1. Check the contact between BIS

Mindray A9 Specifications

General

Type	Anesthesia Workstation
Integrated Gas Analysis	Yes
Backup Battery	Yes
Operating Temperature	10°C to 40°C
Storage Temperature	-20°C to 55°C
Battery Type	Lithium-ion
Ventilation Modes	Volume Control, Pressure Control, SIMV, Manual Ventilation
Display	Touchscreen
Patient Monitoring	ECG, SpO2, NIBP, EtCO2, Temperature
Connectivity	Ethernet, USB
Portability	Mobile (with wheels)
Battery Life	Minimum 90 minutes (typical)
Altitude	Up to 3000 meters
Power Supply	100-240 VAC, 50/60 Hz
Charging Time	Approximately 4 hours
Storage	Internal storage for patient data and system logs
Supported Languages	Multiple languages
Certifications	CE, FDA