ER09 — Gantry rotor motor servo warning
Philips CT error code, reported by the Gantry Rotation Control (Stator Control Board).
What ER09 means
On Access Series CT (6/16/Dual) CT systems, status code ER09 indicates: Gantry rotor motor servo warning. The code originates in the Gantry Rotation Control section of the Gantry Rotation Control (Stator Control Board). Severity level alarm (Alarm — stator control board error condition).
Reported action: Cross-reference System Error Code 0x5502 in the Error Log Viewer/system log (Section 2.9), then follow the Gantry Rotation Prepare Error flow chart (Section 2.4.5). Check the rotor motor servo drive and its wiring before replacing the Stator Control Board..
Listed in Table 1-3 'Stator Control Board Error Code vs System Error Code' of the Philips Access CT Service Trouble Shooting Guide (459800863401 Rev. C), for the Access Series CT (6/16/Dual) family. Not confirmed for other Philips CT systems.
Full troubleshooting for ER09
The complete diagnosis, cause tree, and step-by-step remedy for the Gantry Rotation Control subsystem are documented in the FSELIB Activion16 (TSX-031A) service manual — re-authored, web-first, with real figures.
Open the Activion16 service manualRelated Gantry Rotation Control codes
Source: Philips Access CT Service Trouble Shooting Guide — 459800863401 Rev. C. Reference information re-authored by FSELIB — not a copy of the OEM manual.