Step 10.3 — Confirm the Leviathan voltage-selection jumpers are off¶
Step 3 of 80 · Chapter 10 — Wiring and Checkpoint #1
Parts:
- the Leviathan mainboard · already on the bench
Do: Find the jumper block silkscreened Voltage selection for Z-Probe and Fans, next to the fan headers. All five positions, Probe, Fan0, Fan1, Fan2, Fan3, must be bare.
Check
Five empty jumper pairs. Count them.
What you're looking at
The Leviathan is LDO's mainboard: it drives six motors, reads the bed thermistor and endstops, and supplies the Raspberry Pi with 5 V. Its jumper block is five pin pairs choosing 24 V or 5 V for the probe port and four fan ports.
Caution
Rev D+ / LDO: this build uses an active toolboard, so the Leviathan's own probe port and Fan0/Fan1 stay unused and unjumpered for the whole build. A 24 V jumper on a port feeding a 5 V device destroys the device. src · Leviathan V1.3 manual p.7
Source: LDO wiring guide § Preparing the mainboard · LDO Leviathan V1.3 guide (manual p.7) · Leviathan repo wiring_V1.3.jpg
