Press (Menu) to start, then select 1 for the LCB II system. The Standard Command Tree

: A specific guide on the LCB 2 status indicators to monitor voltage, group status, and safety features at a glance.

The safety chain on the LCB II is split into critical nodes monitored by specific inputs. Checking these LEDs isolates where a safety loop breaks:

A 10-pin diagnostic port used to connect the Otis Service Tool (SVTool) for monitoring, programming, and calibration. Status LEDs: GRP/VLC: Group communication and voltage loop status. NOR/DIAG: Normal operation mode vs. diagnostic/fault mode.