Our field engineer went out the site to check out the unit.She was informed that uncommanded gantry rotation happened occasionally before this incident happened.Two different radiographers left the room with gantry in the cc position, returned to the room and found the gantry upside down (190 degrees).They noted the same error message but they didn't report to us.Our fe ran logs and sent to our technical support team who recommended she replace the following parts; asy-01503, assy, rotary sw w/harness, pcb-00197, assy., c-arm transition bd, pcb-00064, assy, c-arm bd, these parts were replaced and the unit is working as intended.
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The radiographer had finished her screening exam and rotated the c-arm to an upright position using the switch behind the detector, and then removed her hand from the switches.When she turned to get a wet wipe to clean the system she wasn't aware that the rotation didn't stop but continued to rotate and it hit her on her left shoulder.There was room for the radiographer to move out of the way as the c-arm continued rotating.When it stopped, it displayed an error that the switch had failed.No intervention was required.
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