AMX Troubleshooting & Technical Support
Results Count
Error Number
LOW FIL LIMIT
Error Code System Message
LOW FIL LIMIT - Low filament-current calibration limit exceeded
Question
What does LOW FIL LIMIT mean on a GE AMX-Series mobile X-ray?
Short Answer
LOW FIL LIMIT: Low filament-current calibration limit exceeded.
Possible Causes
One or more filament-current calibration parameters fell below the allowable range.
Troubleshooting Steps
Verify filament feedback, tube/cathode connections and mAs/kVp calibration.
Parts Areas to Check
CPU board; calibration data; subsystem identified by the error
For Related Models
AMX-4, AMX-4+, Definium AMX 700
Error Number
MAS CAL ERROR 1
Error Code System Message
MAS CAL ERROR 1 - mAs calibration frequency too high
Question
What does MAS CAL ERROR 1 mean on a GE AMX-Series mobile X-ray?
Short Answer
MAS CAL ERROR 1: mAs calibration frequency too high.
Possible Causes
Injected-current calibration produced a frequency above the allowed range.
Troubleshooting Steps
Check mAs test source, monitor connector and mA measuring circuit.
Parts Areas to Check
CPU board; calibration data; subsystem identified by the error
For Related Models
AMX-4, AMX-4+, Definium AMX 700
Error Number
MAS CAL ERROR 4
Error Code System Message
MAS CAL ERROR 4 - mAs calibration data out of range
Question
What does MAS CAL ERROR 4 mean on a GE AMX-Series mobile X-ray?
Short Answer
MAS CAL ERROR 4: mAs calibration data out of range.
Possible Causes
mAs calibration data-base parameters are outside allowed range.
Troubleshooting Steps
Check mAs/VCO calibration circuitry and CPU data.
Parts Areas to Check
CPU board; calibration data; subsystem identified by the error
For Related Models
AMX-4, AMX-4+, Definium AMX 700
Error Number
Main circuit breaker tripped
Error Code System Message
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
Error Number
Need past fault history
Error Code System Message
Question
Where can AMX-Series service personnel review historical unit information?
Short Answer
The service mode provides Data Log Access for unit history and Extended Diagnostics for troubleshooting; Data Base Access allows viewing/changing calibration parameters.
Possible Causes
Need for historical/intermittent fault analysis.
Troubleshooting Steps
Use Data Log Access to review history before changing calibration data. Use Data Base Access only when the service procedure specifically requires a parameter change.
Parts Areas to Check
CPU service data; non-volatile memory