BeneVision N17/BeneVision N15/BeneVision N12 Patient Monitor Service Manual          4-1
4 Troubleshooting 
 
 
4.1 Introduction 
This chapter lists the problems that may occur during use of the monitor and recommended measures. 
Refer to the table in this chapter to check the monitor, confirm and fix these problems. For more 
information about the troubleshooting, please contact Mindray service. 
 
 
4.2 Part Replacement 
For the monitor, the PCB, main parts and components can be replaced. For the LCD or touch screen fault, 
only the front case assembly can be replaced. Once the faulty PCB is confirmed, replace the PCB according 
to the operation guide in Chapter 6 Repair and Disassembly. Then, confirm that the monitor can operate 
normally and has passed all the performance tests. For the information about replaceable parts, refer to 
Chapter 7 Parts. 
 
4.3 Check before Powering on the Monitor 
After the AC power supply is connected, check whether the AC indicator is turned on. If not, confirm 
whether the AC cable is connected to the socket and monitor reliably. If both the AC external power 
supply and power cord are connected normally, but the AC indicator is off, the AC-DC power module or 
main control board of the main unit may be damaged. Now, you need to run the monitor on battery 
powered on. If the monitor cannot be powered on, the main control board may be damaged or the 
internal board is abnormal, resulting in power supply protection. If the monitor can be run on battery 
power, the AC-DC power module is damaged. 
 
In addition, check the appearance for damages before powering on. Particularly, when the touch screen of 
the screen assembly is damaged, stop using the monitor immediately. 
 
 
4.4 Software Version Check 
Some troubleshooting tasks may involve software version compatibility. For information about the 
configuration and software version of your patient monitor, contact Mindray service. To check the 
software version, do as follows: 
  Select Main Menu quick key, from the System column, select Version. You can check the version 
information of the system software.   
  Select Main Menu quick key, from the System column, select Maintenance >>  →  enter required 
password  → select Version. In the displayed menu, you can check the version information of the 
system software and modules.