Alarm — high severityMUDAT (gantry-to-console data transfer)

B7120001 — Data transfer system (1) abnormality on the MUDAT link (4402)

Canon Medical (Toshiba) CT error code, reported by the MUDAT (Data Transfer).

What B7120001 means

On Aquilion RX / V4-62R004 and Aquilion ONE / V4.2 CT systems, status code B7120001 indicates: Data transfer system (1) abnormality on the MUDAT link (4402). The code originates in the MUDAT (gantry-to-console data transfer) section of the MUDAT (Data Transfer). Severity level A1 (Alarm — high severity).

Reported action: Turn the gantry off for about five seconds and try the scan again — that is the recovery step the system prints with detail 4402 (acquisition parameter setting error of REF / QV-ADC). If the abnormality returns, check data transfer system (1) on the MUDAT link (boards, cabling and connectors between the rotation and stationary sections) and follow the MUDAT troubleshooting flow in the service manual; the message directs the site to contact service if it persists..

Toshiba/Canon Aquilion RX (V4-62R004) and Aquilion ONE (V4.2) CT systems, on data transfer system (1) of the MUDAT link. On some software versions the same code carries the gantry detail 4402, an acquisition-parameter setting error of REF / QV-ADC.

Full troubleshooting for B7120001

The complete diagnosis, cause tree, and step-by-step remedy for the MUDAT (gantry-to-console data transfer) subsystem are documented in the FSELIB Activion16 (TSX-031A) service manual — re-authored, web-first, with real figures.

Open the Activion16 service manual

Related MUDAT (gantry-to-console data transfer) codes

B7110002Data transfer system (1) error during scanning (MUDAT)B7110004Channel-switching error in the MUDAT data transfer linkB7110008OPCONT2 DAS clock count error on the MUDAT linkB7220002Data transfer system (1) settings abnormal (MUDAT)B7220004Data transfer system (3) abnormality (MUDAT)B7220008Data transfer system (2) abnormality (MUDAT)00000001RECON unit ended abnormally, reconstruction queue full00000002RECON unit timed out — restart the reconstruction queue

Related service procedures

Run the console malfunction-diagnosis program (hwtest)Console (Diagnostics)Run the independent MHR PWB test (diagnostics) from the RTM terminalConsole (Diagnostics)Remove the host PC unit (PX74-07959 GR-1/GR-2)Console (Operation)Remove the host PC unit (PX74-08766 GR-1/GR-2)Console (Operation)Remove and install an RDD disk/power-supply unit (Rorke Data)Console (Recon)Remove and install an RDD fan unit (Rorke Data)Console (Recon)
Discuss B7120001 with other field engineers in the FSELIB forum

Source: Toshiba/Canon CT service error message table (errmsg.eng, Aquilion RX V4-62R004 / Aquilion ONE V4.2). Reference information re-authored by FSELIB — not a copy of the OEM manual.