The Challenge E‑1794 is a heavy‑duty industrial paper cutter that relies on an electromechanical drive, linear rail guide, and safety interlocks for precise guillotine cutting. Common failure points include worn or misaligned blade guides, degraded motor bearings, power supply voltage drops to the drive controller, and loss of safety lock‑out signals from the back‑gauge interlock. First‑check diagnostics: verify 120/240 VAC input and proper grounding; inspect the drive board for burnt components or loose solder joints; confirm that the blade guide rails are free of debris and correctly tensioned; review any error codes displayed on the control panel for motor or safety faults.[oss-gpt-20b]