ProcedureGantry/RotationReplace
Replace the MR sensor and MR sensor PWB
Replace the gantry's MR sensor and MR sensor PWB — the rotation-speed-sensing pair mounted near the R-MUDAT gear — following the S/N Axxxxx procedure (§7.7.1, which ends with a precision gear-to-sensor clearance set) or the S/N Bxxxxx procedure (§7.7.2, a bolt-and-connector swap), depending on the gantry's serial-number prefix.
Applies to
Aquilion 16 (TSX-101A). This atom covers two serial-number variants documented separately in source: gantry serial numbers "S/N Axxxxx" follow the §7.7.1 procedure (Steps — S/N Axxxxx below); "S/N Bxxxxx" follow the §7.7.2 procedure (Steps — S/N Bxxxxx below). Confirm the gantry's serial-number prefix before starting either step group.
Personnel
1 technician · Intermediate — sequential mechanical work common to both serial-number variants: remove/refit gantry access covers, disconnect a connector, and swap the MR sensor and MR sensor PWB; the S/N A variant (§7.7.1) adds one delicate step — setting the gear-to-MR-sensor clearance to 1 mm ±0.5 mm by feel, using a 1-mm plate as a temporary spacer while tightening the securing screw. No electrical test equipment, meters, or torque values are called out in this section (skill assessment derived from procedure content — not an OEM-stated skill level).
Steps
12 steps
Source
2D201-063E*G p.141-144
Tools & parts
| Item | Part number | Qty |
|---|---|---|
| Replacement MR sensor | n/a in source | 1 |
| Replacement MR sensor PWB | n/a in source | 1 |
| MUDAT external cover securing screws (S/N A) | n/a in source | M8, count not stated in source |
| MR sensor securing screw (S/N A) | n/a in source | 1 |
| 1-mm thick plate, plastic recommended (S/N A) | n/a in source | 1 |
| MUDAT external cover fasteners (S/N B) | n/a in source | M4 ×2 |
| MR sensor fasteners + shim (S/N B) | n/a in source | M4 ×2 + 1 shim |
| MR sensor PWB fasteners (S/N B) | n/a in source | M4 ×4 |
Full step-by-step for Replace the MR sensor and MR sensor PWB
All 12 steps are documented in the FSELIB Aquilion 16 (TSX-101A) service manual — re-authored, web-first, with the real figures from the source.
Open the full procedureRelated Gantry/Rotation guides
Adjust the MR sensor and MR sensor PWB20 stepsReplace the rotation-direction photo sensor unit6 stepsGantry rotation interlock when servicing with cover open11 stepsGantry rotation speed check and fine adjustment7 stepsGantry rotation system operation and troubleshooting (S/N Axxxxx)0 stepsGantry rotation system operation and troubleshooting (S/N Bxxxxx)5 steps
View all Aquilion 16 (TSX-101A) guidesSource: 2D201-063E*G p.141-144. Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.