ProcedureGantryReplacementReplace

Remove and refit the gantry dome cover

Remove the dome cover to reach the slip ring and brush section behind it — for example to troubleshoot slip-ring noise/discharge, clean the ring, or replace worn brushes (see Related) — then refit it. The dome cover sits behind the rear covers in the gantry's cover stack, so removing the rear covers (§1.3.4) is a prerequisite step here, not something this task repeats.

Applies to
Activion16 (TSX-031A). No model- or revision-specific restriction is stated in source for this task.
Personnel
1 technician · Field service engineer (CT gantry, basic mechanical/electrical service)
Steps
5 steps
Source
2D201-112EN*D §1.3.5 (p.54) — Removing/Mounting the dome cover

Tools & parts

ItemPart numberQty
Dome cover—1
Mounting screws, M4—4
Cable clamp—1

Safety

DANGER

Hazard: Slip ring and brush section behind the dome cover carries high voltage while the distribution-board breakers are energized

Consequence: Electric shock

Avoidance: Turn OFF all breakers on the distribution board before removing the dome cover (Step 1) — never open this cover with the breakers energized

Full step-by-step for Remove and refit the gantry dome cover

All 5 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 procedure

Related Gantry guides

Adjust the gantry positioning projectors (side, slant, and median)10 stepsAdjust the gantry rotation belt tension16 stepsAdjust the gantry rotation speed (servo amplifier, VR1)3 stepsAdjust the gantry servo-amplifier offset23 stepsAdjust the gantry tilt-stop angles (encoder calibration)5 stepsCheck the gantry rotation speed7 steps
View all Activion16 (TSX-031A) guides

Source: 2D201-112EN*D §1.3.5 (p.54) — Removing/Mounting the dome cover. Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.