Main circuit breaker tripped | AMCI Medical Imaging

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Troubleshooting AMX

Error Number

Main circuit breaker tripped

Error Code / System Message

Error Question

How do I troubleshoot breaker tripping problems on the AMX-4 Series?

Short Answer

1) FIL/kVp Board sees >15 kVp above demand. 2) Check input power to Charger Board for stability. 3) Check bad/loose LVLE connections. 4) Check J1 connection on CPU. 5) Check J6 connection on FIL/kVp Board. 6) Batteries below 110 VDC or poor regulation: run load test. 7) Check J2 on 1 kHz Board for +24 V loss. 8) Check 1 kHz Board Inverter A4Q1 or A4Q2; short exposures approximately 0.59 ms. 9) Check +24 V line for intermittent low voltage. 10) Check LVLE Power Fail Detect to newer Charger Board. 11) Check Display Controller/Display Board. 12) Check HV Transformer spark gaps (0.010 in.). 13) Re-grease HV Transformer/X-Ray Tube wells. 14) Remove breaker trip lead; if breaker still trips, check Stop SCR, HV Transformer or short on HV Transformer secondary. 15) Check tap relay(s). 16) On older units, insulate capacitor C5 from retaining clamp.

Possible Causes

1. FIL/kVp Board Sees >15 kVp Above Demand 2. Input Power To Charger Board Stable? 3. Bad/Loose Connections On LVLE 4. Bad Connection J1 On CPU 5. Bad Connection J6 On FIL/kVp Board 6. Batteries Below 110 VDC Or Poor Regulation (Run The Load Test) 7. J2 1 KHZ Board — +24 Volt Loss 8. Possible Bad 1 KHZ Board Inverter A4Q1 Or A4Q2 (Short Exposures Approx. .59 ms) 9. +24 Volt Line Going Low Intermittently 10. Bad LVLE (“Power Fail Detect” From LVLE To Newer Charger Board) 11. Bad Display Controller/Display Board 12. Check HV Xformer Spark Gaps (0.010”) 13. Re-Grease HV Xformer/XRT Wells 14. Remove Breaker Trip Lead — Still Trip = Bad Stop SCR Or Bad HV Xformer Or Short On Secondary Of HV Xformer 15. Bad Tap Relay(s) 16. Insulate (On Older Units) Capacitor C5 From its Retaining Clamp (Ref. Service Note 3265) 17. K150/K215 On Charger Board Faulty (Tap On It-Breaker Trips?) 18. During Calibration - Verify H/V Candles Greased And Pins Spread Properly 19. During Calibration - At Higher kVp (>120 kVp) - Re-Load Defaults And Try Starting The Calibration With 112.5 VDC On The Battery Pack Instead Of 113.5 VDC

Troubleshooting Steps

1. FIL/kVp Board Sees >15 kVp Above Demand 2. Input Power To Charger Board Stable? 3. Bad/Loose Connections On LVLE 4. Bad Connection J1 On CPU 5. Bad Connection J6 On FIL/kVp Board 6. Batteries Below 110 VDC Or Poor Regulation (Run The Load Test) 7. J2 1 KHZ Board — +24 Volt Loss 8. Possible Bad 1 KHZ Board Inverter A4Q1 Or A4Q2 (Short Exposures Approx. .59 ms) 9. +24 Volt Line Going Low Intermittently 10. Bad LVLE (“Power Fail Detect” From LVLE To Newer Charger Board) 11. Bad Display Controller/Display Board 12. Check HV Xformer Spark Gaps (0.010”) 13. Re-Grease HV Xformer/XRT Wells 14. Remove Breaker Trip Lead — Still Trip = Bad Stop SCR Or Bad HV Xformer Or Short On Secondary Of HV Xformer 15. Bad Tap Relay(s) 16. Insulate (On Older Units) Capacitor C5 From its Retaining Clamp (Ref. Service Note 3265) 17. K150/K215 On Charger Board Faulty (Tap On It-Breaker Trips?) 18. During Calibration - Verify H/V Candles Greased And Pins Spread Properly 19. During Calibration - At Higher kVp (>120 kVp) - Re-Load Defaults And Try Starting The Calibration With 112.5 VDC On The Battery Pack Instead Of 113.5 VDC

Parts Areas to Check

Display Board; Battery; Tap Relay

For Related Models

AMX-4, AMX-4+, Definium AMX 700

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