The ZNC Die Sinker EDM AGIE ELOX MONDO 2 Pendant Controller is a control interface for a conventional, RAM‑type EDM machine that manages X/Y manual axes and automatic Z‑axis motion. Common failure points in this class of equipment include power supply degradation (especially the 3×400 V line feeds), relay or contactor wear on the drive circuits, and encoder/position sensor drift that can cause mis‑aligned cuts. Initial troubleshooting should verify proper 3‑phase voltage and phase sequence to the controller, inspect all relays, contactors, and I/O terminals for signs of arcing or corrosion, and review any error codes displayed on the pendant or PLC logs. A quick visual check of cable integrity and connector tightness followed by a power‑on self‑test will confirm whether the issue is electrical or related to the control logic.[oss-gpt-20b]