Operate the KGTSM maintenance panel
Use the KGTSM maintenance panel's built-in switch bank to run a single gantry/couch function directly on the bench — wedge, DAS test, slit, detector, tilt, test rotation, scanoscope, scan, projector lamp, couch slide, couch height, offset, slide idle/zero-clear, or rotor brake — without going through the operator panels or the console. This is the direct-hardware path used for service checks and a
Safety
Hazard: Panel switch SW1 set to ON
Consequence: the KGTSM maintenance panel takes exclusive control — the gantry/couch cannot be operated from the operator panels or from the console while SW1 is ON (functional interlock, no injury risk)
Avoidance: Treat SW1-ON as taking over normal control; return SW1 to PANEL OFF (Work procedure step 6) as soon as maintenance-panel work is finished (source §3.5.1 item 1)
Hazard: SW1 turned ON while the gantry or couch is already in motion
Consequence: the gantry or couch stops; the gantry stops rotating at the TUBE home position (tube position -15°)
Avoidance: Expect an abrupt stop at the TUBE home position if SW1 is switched ON during motion; do not toggle SW1 mid-motion unless that stop is intended (source §3.5.1 item 2)
Hazard: Slide-out movement commanded from the maintenance panel with the couch already closer to the OUT end than the OUT-2 position
Consequence: the couch slows down and stops, triggered by the built-in safety function
Avoidance: Anticipate the automatic slowdown/stop near OUT-2 when driving slide-out from the panel; do not mistake it for a malfunction (source §3.5.1 item 3)
Hazard: Panel switch SW1 turned OFF before the indicated/selected operation has terminated
Consequence: the operation in progress may be interrupted or left in an unintended state
Avoidance: Wait for the selected operation to finish before setting SW1 to PANEL OFF (source §3.5.1 item 5)
Hazard: PANEL switch (SW1) turned OFF before the SET switch (SW11) — and the SCAN switch (SW12), where used — is released
Consequence: per source footnote *2, the panel-off transition is not clean
Avoidance: Release SW11 (SET) and SW12 (SCAN) first, then set SW1 to PANEL OFF
Hazard: SW32 (FUNCTION SET) changed while a function selected on it is still being carried out
Consequence: unpredictable behavior of the function in progress (source footnote *1)
Avoidance: Do not change SW32 while its selected function is running
Hazard: KGTSM not reset after maintenance-panel use
Consequence: the system may remain in a maintenance-panel-influenced state
Avoidance: Always press RESET (SW21) or cycle power after finishing (Work procedure step 7; source §3.5.1 item 4 and footnote *3)
Full step-by-step for Operate the KGTSM maintenance panel
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 §3.5.1 'Important notices' + §3.5.2 'Procedures to use the maintenance panel' (p.211–215). Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.