[139486]
The headrest (actuator #3) on table was stuck in the "up" position. Svc mgr handled the telephone call and informed user that the possible problem was that they may need a new pcb and they would be sent a replacement. User was issued a rma number and asked to return the pcb in question. User was contacted two add'l times regarding returning the board. On wednesday, 11/29, the pcb was received at mfr's facility. Failure analysis on the pcb began on monday, 12/4/00. Failure analysis investigation revealed that the relay contacts fused together, causing actuator #3 to continue to run until it hit the limit switch, which is a malfunction. Investigation into this problem revealed info, observations and opinions that reasonably suggests that if the device were to malfunction for the same reason again, serious injury or death could result from the malfunction. To elaborate on the consequences fo the malfunction, if actuator #3 continues to run without operator control, the pt's head could run into the stylus if the stylus pin is in a lowered position, which could possibly cause serious injury or death. There was a pt on the table at the time of the malfunction, however, no injury occurred.
Patient Sequence No: 1, Text Type: D, B5