Manually lower the patient couch after a power/fuse failure (emergency)
Use this when the patient couch is stuck at a raised position because power to it has been lost — for example, a fuse in the gantry has blown and no power reaches the couch. You bypass the couch's own control electronics and drive the DOWN-movement solenoid valves directly by feeding 200 VAC to specific pins of the couch connector (CNN1, also labeled CNN/CN1 on the jig diagrams) with a purpose-bui
Tools & parts
| Item | Part number | Qty |
|---|---|---|
| Standard tool set | n/a in source | 1 set |
| Circuit protector (CP) — power ON/OFF | Fuji Electric CP32E-1S005 (main unit) or equivalent; Fuji Electric CP-S2 (socket) or equivalent | 1 |
| Step-up transformer (STR) | n/a in source (spec only) | 1 |
| Couch UP/DOWN toggle switch (SW) | OTAX toggle switch ATP01 or equivalent | 1 |
| Couch connection contactor (CN) | Housing: Japan AMP 350736-1 or equivalent; Contact: Japan AMP 350550-1 or equivalent | 1 |
| Cable, UL-compliant AWG14, heat-resistant vinyl coating | n/a in source | as needed |
Safety
Hazard: 200 VAC is supplied directly to the couch connector (CNN1) during this operation
Consequence: Electric shock; a hand or head can be caught as the patient couch moves down
Avoidance: Take care to avoid electric shock. Keep hands and head clear of the couch while it is moving down. (Restates general precaution #17 in the front-matter safety section.)
Full step-by-step for Manually lower the patient couch after a power/fuse failure (emergency)
All 4 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 Couch/Table guides
Source: 2D201-112EN*D §2.4.2 (pp. 134-136) — Lowering the patient couch. Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.