Check the gantry rotation speed
Run a KGTSM-driven speed check to read the gantry's actual rotation speed at start-up, compare it against the standard, and see whether the KGTSM needed to correct it. Do this after replacing the KGTSM PWB or the servo amplifier, whenever a speed error or a stop position error occurs, or as a routine functional check of the rotation section.
Safety
Hazard: Commanding the gantry to rotate (repeated start/stop cycles, up to 1.5 s/rotation) to run this check
Consequence: Source states only the bare top-of-section caution "Be careful when rotating the gantry", with no further detail given for this specific line
Avoidance: Keep hands, tools, and bystanders clear of the rotation section for every start/stop cycle commanded in this check
Hazard: Setting the PANEL switch (SW1) to OFF before all maintenance-panel operations for this check are complete
Consequence: Source does not spell out a specific failure beyond flagging the sequencing itself as unsafe
Avoidance: Do not set SW1 to OFF (upward) before all maintenance-panel operations for this check are completed; after finishing, set the panel switch OFF and reset the KGTSM
Hazard: Performing more than ten consecutive continuous-scanning cycles (a start/stop pair counted once each) without a pause, or restarting too soon
Consequence: May damage the servo-amplifier (equipment-only damage; source prints this under a CAUTION heading, re-leveled to NOTICE per Z535)
Avoidance: Do not perform more than ten consecutive scan (start/stop) cycles; if repeated continuous scanning is required, stop for two minutes after every ten scans
Full step-by-step for Check the gantry rotation speed
All 7 steps are documented in the FSELIB Activion16 (TSX-031A) service manual — re-authored, web-first, with the real figures from the source.
Open the full procedureRelated Gantry guides
Source: 2D201-112EN*D §3.7.4 (pp.260-261) — Gantry rotation speed check. Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.