For VFGL models (KCD-100X), set the rotary switches to SET1=E and SET0=1 to begin diagnostics.
To diagnose issues with a VFGL system, technicians must access the debug mode on the control board: mitsubishi vfgl manual portable
To help you find the exact part or manual page, could you clarify: Are you working on an or a projector ? For VFGL models (KCD-100X), set the rotary switches
Drive trips on E.OS (Overspeed). Manual reference: Chapter on encoder feedback. Check encoder wiring (A/B/Z phases) and Pr.369 (Overspeed detection level). For VFGL models (KCD-100X)