Replace the patient couch's flexible cover
Replace a damaged flexible cover — the cover that shields the couch's vertical drive unit — by fully separating the couch's outer covers and couch top, disconnecting the vertical drive unit's cables, removing the upper frame, and swapping the flexible cover underneath it.
Tools & parts
| Item | Part number | Qty |
|---|---|---|
| Flexible cover | n/a in source | 1 |
| Retaining plates A (M4) | n/a in source | 6 |
| M4 screws | n/a in source | 2 |
| Couch-top fixing bolts | n/a in source | 2 |
| LM guide rail fixing bolts | n/a in source | 15 |
| Upper-frame fixing bolts | n/a in source | 11 |
| Connector CNN26 | n/a in source | 1 |
| Square timber (or equivalent protective material) | n/a in source | as needed |
Safety
Hazard: Couch vertical drive (potentiometer, height-detection photosensor, vertical-drive-unit wiring) left electrically live while its cables and connectors are disconnected in Steps 3–4
Consequence: Unexpected couch movement, or electric shock to the technician working inside the opened assembly
Avoidance: Isolate power to the couch drive before starting — disconnect CN451 on the KGTSM PWB, or remove system power at the distribution board (per the manual general precaution: 'Disconnect CN451 of the KGTSM PWB to turn OFF the power of tilt motor, rotation servo system, couch etc.')
Hazard: Upper frame (Step 4) handled by one person, or set down without protective material
Consequence: The PWBs and horizontal drive unit mounted on the upper frame are subjected to excessive force and can be damaged; the frame is heavy enough that one person risks losing control of it
Avoidance: Perform Step 4 with two people, and set the removed upper frame on proper protective material such as square timber, taking care not to damage the cables or electric parts (source instruction)
Hazard: Disconnecting the three connectors, CNN26, or any other cable in Step 3 by pulling on the cable itself
Consequence: Cable damage
Avoidance: Disconnect by the connector body, never by pulling the cable (per the manual general precaution: 'Never pull the cable when disconnecting the connector')
Hazard: High-pressure hose (Step 3) bent tighter than its minimum permissible radius during handling or reinstallation
Consequence: Permanent, unusable damage to the hose
Avoidance: Handle the high-pressure/hydraulic hose carefully; minimum permissible bending radius is 45 mm (per the manual CAUTION on handling the hydraulic hose, front-matter p.10)
Hazard: Internal cable routed so it interferes with electromagnetic valve L24 while remounting the flexible cover (Step 7)
Consequence: Cable damage, or fouling of the L24 solenoid valve that (with L21) controls couch DOWN movement
Avoidance: Exercise extreme care routing the internal cable clear of L24 during reassembly, per §2.6.6 Routing of the internal cables (source instruction, §2.5.1 step 7 / §2.6.6)
Hazard: Any cover reinstalled in Step 7 (couch top, rear cover, front cover, side covers <L>/<R>, side bumpers <L>/<R>, maintenance cover, rail cover) left with loose mounting screws
Consequence: A cover can open, fall, or strike nearby objects or personnel during subsequent couch motion
Avoidance: Confirm every cover mounting screw is tightened firmly before returning the couch to service (per the manual general precaution: cover mounting screws tightened firmly)
Full step-by-step for Replace the patient couch's flexible cover
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 Couch/Table guides
Source: 2D201-112EN*D §2.5.1 (pp.137–141) — Replacement of the flexible cover. Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.