Step 11.41 — Note the filter fan config for Ch 12¶
Step 42 of 67 with a helper · Chapter 11 — Skirts, panels, Clicky-Clack door, filtration
(no image — see LDO Nevermore guide § Configuration printer.cfg)
Parts: none.
Do: Write the pin on a tag and tape it to the plenum. LDO's [heater_fan exhaust_fan] section is right in shape but its pin: PD13 is the Octopus pin and must become the Leviathan's PF9. Step 12.32 replaces it with [fan_generic nevermore] on the same pin.
Check
Tag on the plenum reading "FILTER FAN → FAN3 / PF9". Ch 12's config checklist has the Nevermore section on it.
Helper Writes the tag and tapes it to the plenum.
What you're looking at
Nothing to build: you are writing down a pin number so Ch 12 does not have to re-derive it. LDO's published config section is right in shape but names the wrong board's pin.
Source: LDO Nevermore V5 Duo guide § Configuration printer.cfg · leviathan-printer-rev-d-sbv2.cfg