Del Medical EPEX Omniflex IV, Service Manual

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EPEX/Omniflex IV System Service Manual
Diagnostics and Troubleshooting 7-11
A3 Bucky Fault Drive motor not moving 1. Verify U-arm J1 connector has power.
2. Deselect Bucky and press RESET
(located in the radiography control
group).
3. Check the Bucky Enable and Bucky
Return signals.
4. Verify J1-12 and J1-13 close in Bucky.
5. Verify Generator Panel N1 J4-12 and 13
have signals.
6. Verify System Controller Motherboard
J20-1 has signal and goes to 8 V gnd.
Verify J20-2 and J39-22 have signals.
7. Verify Generator Panel M1 J1-22 has
signal.
8. Verify WAMI J1-22 has signal.
A4 (Reserved)
A5 Communication Fault • Communication fault
between the DirectRay
Console and the Generator
• Tube arcing
• Handswitch prematurely
released
1. Released handswitch too early.
2. Check the prep expose_ready signals
going to the Generator, and the
prep_ready and xray_ready signals from
the Generator.
A6 kV Error • mA problems
• Filament temperature too
high
1. Suspect miscalibration.
2. Check the kV feedback on the HF Power
Board.
3. Scope hV transformer; check waveform.
4. Verify TP2 and TP3 for mA and kV.
A7 Filament Error • Overcurrent
• Tube arcing
• Open circuit; no Filament
• Cable problem
• Cathode fault from IGBT
drivers
Review Filament circuit.
A8 mA Overload Error • Bad plug
• mA out of bounds for
exposure
• Filament circuit fault
1. Verify mA requested is within bounds.
2. Review Filament circuit.
3. Check plugs.
Table 7-2.
System-Level Error Codes
Error Error Type Possible Cause Recommended Action