HC10820 — MDM home position sensor S7 not connected or malfunctioning
Agfa CT error code, reported by the MDM / Densitometer Module.
What HC10820 means
On DryStar 5500 (Type 5364/100) and DryStar 5503 (Type 5364/300) CT systems, status code HC10820 indicates: MDM home position sensor S7 not connected or malfunctioning. The code originates in the MDM Module — Home Position Sensor (S7) section of the MDM / Densitometer Module. Severity level alarm (Alarm).
Reported action: Check the connections to S7 and reconnect or replace the connector if faulty; check connector P30 on the MEC board and reconnect or replace if faulty; check the wiring from S7 to MEC/P30 with a multimeter and fix it if faulty. If the wiring is good, power off the printer and replace sensor S7; if the fault remains, the sensor function on the MEC board has failed and the MEC board has to be replaced..
Raised on the Drystar 5500/5503 MDM (macrodensitometer) module when the home position sensor S7 is not connected or is malfunctioning. The printer shows "Calibration module not working".
Full troubleshooting for HC10820
The complete diagnosis, cause tree, and step-by-step remedy for the MDM Module — Home Position Sensor (S7) subsystem are documented in the FSELIB Activion16 (TSX-031A) service manual — re-authored, web-first, with real figures.
Open the Activion16 service manualRelated MDM Module — Home Position Sensor (S7) codes
Source: AGFA DryStar service manual — HC error catalogue (FSELIB authored corpus). Reference information re-authored by FSELIB — not a copy of the OEM manual.