Step 10.24 — PSU → Leviathan board supply¶
Step 24 of 80 · Chapter 10 — Wiring and Checkpoint #1
Gather for this segment — steps 10.24–10.29 (~25 min)
The Cable Kit box
- 24V PSU to MB cable ×1
- HV to MB HV cable ×1
- 24V power cable ×1
- SSR to MB cable ×1
Tools and consumables
- multimeter
- cable tag
Already on the bench
- two of the jumpers bagged in Ch 09
Parts:
- 24V PSU to MB cable ×1 · the Cable Kit box
- multimeter · tool
- cable tag · consumable
Do:
- TO MB end onto the PSU +V/−V, 24V end onto the Leviathan's Vin 24V / Board. Red to +, black to −.
- Tag the cable. Tags and wire colours are the only end markers (verify on bench).
Check
0 V across PSU +V and −V, still 0 V ten seconds later. Polarity read twice, both ends. Cable tagged at the board end.
What you're looking at
24V PSU to MB is the kit lead that feeds the Leviathan's own electronics, and Vin 24V / Board is the screw-terminal pair on the mainboard that accepts it. The board has a second, separate supply input for the stepper drivers, which is wired next.
Source: LDO Rev D photo S4 24 V/SSR mapping · LDO wiring guide § Connecting 24V · LDO Leviathan V1.3 guide (manual p.8)
