Replace the gantry optical system (slit/wedge assembly)
Remove the optical system — the combined slit and wedge filter assembly, mounted together with its base-plate on the front of the gantry's rotating base (see Related: X-ray beam control theory) — to replace it, or to gain access behind it. Source documents only the removal half of this task as a numbered procedure; no separate mount/reinstall subsection exists for it in this manual (unlike, e.g.,
Tools & parts
| Item | Part number | Qty |
|---|---|---|
| Optical system shielding cover (front cover only) | — | 1 |
| Slit sensor | — | 1 |
| Wedge sensor | — | 1 |
| Motor connectors (slit motor + wedge motor) | — | 2 each motor |
| Slit and wedge base-plate bolts | — | 4 |
Safety
Hazard: Touching the slit/wedge drive motor(s)
Consequence: Burn injury — the motor runs hot
Avoidance: Do not touch the motor (safety library G-CA15)
Hazard: The optical system (slit/wedge assembly) is bolted to the gantry's rotating base
Consequence: Electric shock or injury from inadvertent gantry rotation while cables, sensors, motor connectors, or base-plate bolts are being removed
Avoidance: Complete Steps 2–3 — breaker NFB2 OFF, servo protector CP320 OFF — before separating cables or removing sensors/connectors/bolts (safety library G-D04 / G-W04 pattern)
Full step-by-step for Replace the gantry optical system (slit/wedge assembly)
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 §1.5.7 (pp.99–101) — Procedures for removing the optical system. Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.