What is Philips CT error code ER28?

Couch position code measurement tolerance exceeded. It is reported by the Patient Table / Patient Support on Access Series CT (6/16/Dual) CT systems. Severity: Alarm — stator control board error condition; subsystem: Patient Table / Patient Support.

What should a field engineer do about ER28?

Cross-reference System Error Code 0x5719 in the system log. The couch position code measured by the Stator Control Board and the Patient Table disagree beyond the set tolerance; check patient table position sensors/encoders and calibration.. Isolate the Patient Table / Patient Support subsystem and follow the status-code troubleshooting in the service manual. FSELIB documents the full diagnosis and remedy for the Access Series CT (6/16/Dual).

Alarm — stator control board error conditionPatient Table / Patient Support

ER28 — Couch position code measurement tolerance exceeded

Philips CT error code, reported by the Patient Table / Patient Support.

What ER28 means

On Access Series CT (6/16/Dual) CT systems, status code ER28 indicates: Couch position code measurement tolerance exceeded. The code originates in the Patient Table / Patient Support section of the Patient Table / Patient Support. Severity level alarm (Alarm — stator control board error condition).

Reported action: Cross-reference System Error Code 0x5719 in the system log. The couch position code measured by the Stator Control Board and the Patient Table disagree beyond the set tolerance; check patient table position sensors/encoders and calibration..

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 ER28

The complete diagnosis, cause tree, and step-by-step remedy for the Patient Table / Patient Support subsystem are documented in the FSELIB Activion16 (TSX-031A) service manual — re-authored, web-first, with real figures.

Open the Activion16 service manual

Related Patient Table / Patient Support codes

ER1APatient table CAN communication time-out ER29Patient table error (grouped code)N09Patient table horizontal zero position not found N0BPatient table warning (grouped code)ALE01Patient table servo drive over-current ALE02Patient table servo drive over-voltage ALE03Patient table servo drive low-voltage ALE04Patient table servo magnetic field position abnormal

Discuss ER28 with other field engineers in the FSELIB forum

Source: Philips Access CT Service Trouble Shooting Guide — 459800863401 Rev. C. Reference information re-authored by FSELIB — not a copy of the OEM manual.