9.2.3.  Emergency Switch Performance Check 
This check is performed as a matter of routine operator maintenance to ensure that the Emergency Switch 
safety feature is functioning properly. Perform this check as often as possible in conditions such as removal 
from long-term storage and exposure to fluids.  
1.  Press and hold the vertical column control key and press Emergency Switch while motion is occurring. 
2.  Verify that mechanical motion stops and the X-Ray Off indicator lights up. 
3.  Press X-Ray switch and verify that X-Rays are disabled. 
4.  Press the power on/off switch to power off the system. 
5.  Rotate the Emergency Switch upward and then reboot the system.  
Images will be lost when the system is restarted unless you have saved them. If you have 
saved images you can access them through the Workstation’s Image Directory function. 
 
9.2.4.  Fluoro Mode Performance Check 
 
This procedure produces X-Rays. Take the appropriate precautions. 
 
1.  Position the C-Arm so that the tube is directly above the image intensifier. 
2.  Place a suitable test object on the image intensifier. 
3.  Verify that auto mode  is selected. The LED on the top left corner of the “Auto Technique” key on the 
control panel will be illuminated. 
4.  Press the left X-Ray switch on  footswitch and handswitch. Verify  that a digitized fluoro image  of the 
object appears on the left monitor and that it remains there after the exposure is terminated. 
5.  Verify operation of the field size selection keys: NORM, MAG1 and MAG2.  
6.  Press the  footswitch or handswitch to  verify operation of the  motorized  collimation controls:  shutter 
rotation, iris collimation, and shutter open/close.