1.11. Equipment Malfunction 
If either the hospital or equipment circuit breakers trip, an equipment malfunction may be indicated. Do not 
attempt to operate the equipment until a qualified service engineer has checked it. 
If any of the equipment controls fail to respond as indicated in this manual, you should: 
1.  Remove power to the  equipment by placing the power switch in the off position and unplugging the 
power cord from the AC receptacle. 
2.  Notify a qualified service engineer. 
3.  Do not operate the equipment until the service technician advises that it is operating properly. 
 
Establish an operation room emergency procudure to ensure patient and user safety in  the 
event of a system failure. 
 
1.12. Mains Isolation  
The system has 2 means to isolate its circuits electrically from the supply mains on all poles simultaneously. 
1.  Switch the breaker to OFF position. 
2.  Unplug the power cable. 
1.13. External Devices 
To ensure patient safety, only connect external equipment that has been approved by GE HUALUN Medical 
Systems  Co,  Ltd.  All  equipment  such  as  keyboard,  wireless  mouse,  mobile  HDD,  etc,  attached  to  the 
external  interface  connections  must  meet  the  requirements  of  IEC  60601-1  when  operated  within  the 
patient  environment.  When  used  outside  of  the  patient  environment,  each  externally  connected  device 
must  comply  with the  relevant  IEC/ISO  requirements  for that device. In  any  case, the combination of all 
externally connected equipment shall not cause the leakage current of any device used within the patient 
environment to exceed the limits stated in IEC 60601-1. 
 
Cover the connector when it is not in use to avoid unintentional touch.  
Connect  only  medical  devices  that  comply  with  UL/IEC  60601  standards.  Contact  GE 
Healthcare for a list of compliant devices. Connecting a non-compliant device could cause 
injury to the operator, the patient or the equipment.