Del Medical EPEX Omniflex IV, Руководство по обслуживанию

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EPEX/Omniflex IV System Service Manual
Diagnostics and Troubleshooting 7-15
Status Bar Indicates
Problem • Sleep condition, press B to wake up the DirectRay
Controller.
• Error condition is blocked, call Service.
DirectRay Detector Will
Not Rotate • Check into the logic of the Tower.
Bucky Will Not Move
Vertically • Check into the logic of the Tower.
• Verify vertical latch handle is working.
• Verify power to the Tower.
• Verify locks disengaged.
• Verify LVLE to vertical latch assembly.
Tube Does Not Position
Properly • Verify tube positioning is not at the limit switches.
• Manually move the tube to the to the midposition and rotate
the DirectRay Detector for recal.
Exposure Failed • Bucky not in motion
• Communication failure
• Check control circuit.
• Check WAMI.
• Check System Controller Motherboard.
• Check Remote ON/OFF Board.
• Check Power Supply Board.
• Check Rotor Controller I/O Board.
• Check System Controller I/O Board.
DirectRay Controller
POST Failure PAC failed • Verify HV control.
• Reset calibration of HV for zero offset and gain.
• Replace DirectRay Controller.
• Ensure cables are properly connected.
• Review error log file.
• Test HV feedback has decayed 20V within 2 seconds.
• Test erase lights on DirectRay Controller.
• Run initialize readout sequence and check for EG&Gor gate
failure.
• Check if reset due to watchdog timeout.
• Verify internal temperature not exceeded threshold.
• “Override power-on test failure.”
Table 7-3.
Troubleshooting System Problems
Symptom Possible Cause(s) Recommended Action