HC10816 — Drum reference position sensor S8 not connected or malfunctioning
Agfa CT error code, reported by the Print Drum Module.
What HC10816 means
On DryStar 5500 (Type 5364/100) and DryStar 5503 (Type 5364/300) CT systems, status code HC10816 indicates: Drum reference position sensor S8 not connected or malfunctioning. The code originates in the Print Drum Module — Position Sensors section of the Print Drum Module. Severity level alarm (Alarm).
Reported action: Work the connection path first: check the connections to sensor S8 and reconnect or replace the connector if faulty, then check connector XS9, then connector P29 on the MEC board, and verify the wiring from S8 to MEC/P29 with a multimeter. If the wiring is good, power off the printer and replace sensor S8; if the fault persists, the sensor function on the MEC board has failed and the MEC board must be replaced..
Raised on the Drystar 5500/5503 print drum module when the drum reference position sensor S8 is not connected or is malfunctioning. Classed as a Defect, and the printer shows "Call service". Documented in the appendix's drum-module position-sensor block alongside S1 (HC10827), S2 (HC10828), and S3 (HC10830).
Full troubleshooting for HC10816
The complete diagnosis, cause tree, and step-by-step remedy for the Print Drum Module — Position Sensors subsystem are documented in the FSELIB Activion16 (TSX-031A) service manual — re-authored, web-first, with real figures.
Open the Activion16 service manualRelated Print Drum Module — Position Sensors 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.