*OP with another update*

Fault code -27 describes as "Logic Card power supply is less than 10 V dc."

Corrective actions:
*Skip to the end*
Defective Q1 power transistor
Measure for low resistance (<200 ohms) at PZ4 to neg.

That's one of the first things I checked. And when I found 800ish ohms, I took that to mean it was good to go, test passed, if it had been below 200 ohms, that would mean the Q1 is bad.

No. A working forklift I just ran the test on measured 15 ohms and beeped good continuity at me. So...I need to replace the GA600GD25SVA IGBT module, and that should fix my issue.

But I tell ya, I'd still like to know more about the pendant and how to change stuff. Also, I take issue with the wording in that manual. Leaves alot of room for doubt. We don't like doubt. No Doubt.