LED States
Hardware version
CANBench Duo v1.1 — Fabricated prototype, sole built unit. V1.1 is electrically identical to the V1.2 schematic refresh but predates the InvenTree symbol-library migration; the schematic component metadata reflects legacy SCADYS naming. Testing and bench validation reference this V1.1 hardware.
Other versions: v1.2 — schematic refresh (next version)
Four-state lookup table for the CANBench Duo indicator LED (D1, top extrusion).
| State | Meaning |
|---|---|
| Off | No bench-supply voltage |
| Green | Correct polarity, normal operation |
| Blue | Q2 protection FET not fully conducting — typically F1 has blown |
| Red | Reverse polarity at SRC pair (V_BLACK > V_RED) |
A brief Blue flash for a few ms at supply turn-on is benign (Q2 settling) and resolves to Green.
For operator-level troubleshooting flow and what to do in each state, see User Manual → Status LED. For circuit topology and the engineering rationale of the four-state encoding, see Power Indicator LED.