User Manual for Multi-parameter Patient Monitor North-vision Tech. Inc.
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Chapter 8 Troubleshooting
8.1 No Display on the Screen
Shut down the machine and unplug the power. Use a universal meter to check if the outlet has
proper voltage, if the power cable is in good condition, and if the power cable is properly connected
with this apparatus or outlet. Remove the fuse from the back cover of this machine, and make sure it
is in good condition.
8.2 No Blood Pressure and Pulse Oxygen Measures
1. Check if the blood pressure cuff is properly wrapped around the arm according to the operating
instructions, if the cuff leaks, and if the inlet is closely connected with the NIBP jack on the side panel.
Check if the indicator of the pulse oxygen probe flashes and if the pulse oxygen probe is properly connected
to the SpO
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jack on the side panel.
2. If the problems still exist, please contact the dealer.
8.3 System Alarm
1. When the parameter value is higher or lower than the alarm limits, the alarm will ring. Please
check whether the alarm limit value is proper or the condition of the patient.
2. Probe off. Please check the connection of the probes.
Note: In case of trouble of this machine in the service, follow the instructions below to eliminate problem
first. If the attempt fails, contact the dealer in your local area or the manufacturer. Do not open the
cabinet without permission.