Step 10.40 — Tag every stepper cable before you plug anything in¶
Step 40 of 80 with a helper · Chapter 10 — Wiring and Checkpoint #1
Gather for this segment — steps 10.40–10.46 (~30 min)
The Cable Kit box
- Bed TH cable ×1
Tools and consumables
- cable tag ×7
Already on the bench
- the A motor's lead
- the B motor's lead
- the four Z motor leads
- the two 3-pin ends of the XY endstop cable
- the Z endstop cable
Parts:
- cable tag ×7 · consumable
Do: Transcribe the table below onto tags and fit one to each motor cable at the board end. Positions are given "as if standing in front of an upright printer and looking towards it."
Check
Seven tags written, six cables tagged, and you can trace each cable back to the motor it came from without guessing.
Helper Writes the seven tags from the table and hands each one over for its cable.
What you're looking at
Six identical 4-pin motor cables arrive at the board and nothing about them says which corner each came from. LDO's mapping photo names every port on the Leviathan; the diagram shows both HV-STEPPER ports and STEPPER-0..3 by corner, and which ports stay empty.
| Stepper | Physical position | Controller port |
|---|---|---|
| A | rear right of gantry | HV-STEPPER-1 |
| B | rear left of gantry | HV-STEPPER-0 |
| Z0 | front left | STEPPER-0 |
| Z1 | rear left | STEPPER-1 |
| Z2 | rear right | STEPPER-2 |
| Z3 | front right | STEPPER-3 |
| (not used) | — | STEPPER-4 |
Source: LDO Rev D photo S1 stepper mapping · LDO wiring guide § Connecting steppers · Video: Part 6 @0:25:08
