AMX Troubleshooting & Technical Support
Results Count
Error Number
Calibration checksum blocks application mode
Error Code System Message
TEST 04 FAILED / CHECK SUM ERR x
Question
Can a calibration checksum failure prevent normal AMX-Series operation?
Short Answer
Yes. Calibration checksum errors can prevent entry into normal application mode until the calibration data or affected calibration is corrected.
Possible Causes
Corrupted or invalid calibration data; interrupted calibration.
Troubleshooting Steps
Identify the failing checksum. Enter service/calibration mode only as directed, repair the affected calibration, and rerun the relevant checksum/test before normal use.
Parts Areas to Check
Calibration data; CPU non-volatile memory
For Related Models
AMX-4, AMX-4+, Definium AMX 700
Error Number
Cannot Enter “SERVICE MODE” - But Portable Is Operational In Applications Mode
Error Code System Message
Question
How do I troubleshoot this AMX-4 Series issue: Cannot Enter “SERVICE MODE” - But Portable Is Operational In Applications Mode?
Short Answer
Bad Display Controller Board
Possible Causes
Problem: Cannot Enter “SERVICE MODE” - But Portable Is Operational In Applications Mode
Troubleshooting Steps
Bad Display Controller Board
Parts Areas to Check
Display Controller Board
For Related Models
AMX-4, AMX-4+, Definium AMX 700
Error Number
Cannot calibrate kVp (gets hung), filament taps or filament current table (low filament error) etc., or load data in data base access properly, can’t enter calibration mode or getting false error codes displayed, after c
Error Code System Message
Question
How do I troubleshoot this AMX-4 Series issue: Cannot calibrate kVp (gets hung), filament taps or filament current table (low filament error) etc., or load data in data base access properly, can’t enter calibration mode or getting false error codes displayed, after c?
Short Answer
Remove the two NOVRAM chips (U54 & U107) on the newer CPU Board and replace them with the two NOVRAM chips from the older CPU Board, if it is the same style of board. If the board is the “older” style of CPU Board that has only one NOVRAM chip, Then re-order a new CPU Board (Orderable Part # 46-264974G5 or 46-264974G6), or replace the NOVRAM chip(s) (Orderable Part # 46-230318P1)
Possible Causes
Problem: Cannot calibrate kVp (gets hung), filament taps or filament current table (low filament error) etc., or load data in data base access properly, can’t enter calibration mode or getting false error codes displayed, after changing out the CPU Board (part # T3497H, 46-264974G2 or later)
Troubleshooting Steps
Remove the two NOVRAM chips (U54 & U107) on the newer CPU Board and replace them with the two NOVRAM chips from the older CPU Board, if it is the same style of board. If the board is the “older” style of CPU Board that has only one NOVRAM chip, Then re-order a new CPU Board (Orderable Part # 46-264974G5 or 46-264974G6), or replace the NOVRAM chip(s) (Orderable Part # 46-230318P1)
Parts Areas to Check
CPU Board
For Related Models
AMX-4, AMX-4+, Definium AMX 700
Error Number
Capacity bar graph disagrees with battery voltage
Error Code System Message
CHARGE COMPLETE
Question
How do I synchronize the AMX-Series battery capacity meter with the displayed capacity?
Short Answer
The manual provides two methods: complete a full charge to CHARGE COMPLETE, or use the service LOOP TEST procedure to copy internal capacity data to the displayed capacity.
Possible Causes
Capacity-display drift after charging or battery replacement; stale internal capacity data.
Troubleshooting Steps
Prefer a full charge through CHARGE COMPLETE. If service synchronization is required, use the manual's service procedure to synchronize internal and displayed capacity.
Parts Areas to Check
Capacity meter; CPU non-volatile memory; batteries
For Related Models
AMX-4, AMX-4+, Definium AMX 700
Error Number
Charger calibration required
Error Code System Message
CAL CHGR ERR / CHARG BYTE/WORD LIMIT
Question
What does AMX-Series battery-charger calibration learn?
Short Answer
The charger calibration establishes the relationship between commanded charge current and measured charge-current feedback so actual charging current can be interpreted correctly.
Possible Causes
Charger-current feedback/calibration mismatch.
Troubleshooting Steps
Perform charger calibration when CHARG/CAL CHGR errors occur or after relevant charger/CPU service, then verify current feedback across the required ranges.
Parts Areas to Check
Charger board; CPU board; current feedback