LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm SYST-156 — SYSTEM Unknown hard ware

FANUC SYST-156 (“SYSTEM Unknown hard ware”): This PCB is not used on this controller. First check: Mount the correct PCB.

Updated 2026-08-29 · LogrobotLM reference

Description

This PCB is not used on this controller.

Remedy · Remède

Mount the correct PCB.

Frequently asked · Questions fréquentes

What does FANUC alarm SYST-156 mean?
FANUC SYST-156 (“SYSTEM Unknown hard ware”): This PCB is not used on this controller.
How do you troubleshoot FANUC alarm SYST-156?
Mount the correct PCB.

Related codes / Codes liés

SYST-154WARN No start in ISOLATE/BYPASS modeSYST-155ABC overrunSYST-157SYSTEM CE/RIA software does not existSYST-158PAUSE Robot cannot move in T2 mode

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →