News
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09 November - 2026
IC693ACC302 BATT LED Fault: Polarity Or Monitor Circuit
Fix IC693ACC302 BATT LED faults: check polarity, diode, rack wattage, and CPU monitor circuit.
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19 October - 2026
IC693CPU370 Checksum Error: RAM vs Packet Loss
Diagnose IC693CPU370 check-sum errors: RAM corruption vs serial packet loss. Field thresholds and fixes inside.
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22 September - 2026
GE Fanuc IC693CBL304 Replacement: Power Cycle for I/O Bus Fault
Learn why GE Fanuc IC693CBL304 replacement requires a power cycle to clear I/O bus faults. Step-by-step guide for Series 90-30 PLC recovery.