AMX Troubleshooting & Technical Support

In Applications Mode, This Message Indicates That One Calibration Unit Has Exceeded its Proper Range (Cannot Tell Which One). The Calibration Philosophy Is Such That Each Cal Unit (In The Generator Calibration) Depends On The Prior Cal Unit That Was Accomplished (A Confidence Building Scheme). The only Solution For This Error Is A COMPLETE Re-Calibration Of The AMX-4/4+ Unit. This Message Is Called Out In The Operators Manual, Under The “STATUS MESSAGES” Section.

Check CPU/charger calibration path and repeat battery-voltage/charger calibration.

Verify charger-board frequency/input and repeat battery calibration.

Verify battery voltage, charger operation and voltmeter calibration.

Verify actual battery voltage and voltmeter calibration.

Repeat the test/calibration that caused the condition.

This Usually Indicates That The Unit Was Attempted To Be Operated (Rotor And Exposure) Too Soon After A Charging Cycle. In Normal Applications, When The Unit Is Unplugged, It is Normally Driven To Another Location (More Than 50 Feet), Thus Giving The Batteries Time To “Level Off”.

This Might Indicate Possible Cell(s) Failure. There Are 3 Ways To Test Cells/Battery Pack: 1] Monitor Each Cell under A light-load Condition—Rotor Only; 2] Monitor Each Cell Under A Heavy Load — 80 kVp @ 125 mAs. Cell readings should be within 0.2 VDC Of Each Other (Ex. 11.9 VDC To 12.1 VDC). There Should Be 113 VDC Across The Battery Pack Prior To Running Tests 1 & 2 Above. 3] Also refer to ERROR 465, For The Battery Pack Load Test. This may also be a synchronization issue. The Voltmeter Calibration Has To Be Accurate In Order To Run This Test Successfully. This “Synchronizing” Routine Should Always Be Run – 1) At The End Of Any Major Unit Calibration – 2) Upon Replacement Of The Battery Charger Board – 3) If The Unit Was Charged Outside Of Normal Applications Mode (Check Sum Bypass Or Diagnostics Mode). Also refer to Problem 24, Below. Charge the unit to “CHARGE COMPLETE”. This updates both the internal capacity meter and the displayed percentage, allowing the two values to synchronize.

Recharge the unit fully. If the message returns quickly, verify battery condition under load and check capacity-meter synchronization before replacing the battery set.

Compare displayed capacity with actual battery condition and operating state. If capacity is persistently inaccurate, check battery-aging parameters and capacity synchronization rather than replacing batteries solely from the graph.