HC11020 — No power connection detected between THIB and thermal head
Agfa CT error code, reported by the TH Module — Connectivity (TH ↔ THIB ↔ MEC).
What HC11020 means
On DryStar 5500 (Type 5364/100) and DryStar 5503 (Type 5364/300) CT systems, status code HC11020 indicates: No power connection detected between THIB and thermal head. The code originates in the TH Module — Connectivity (TH ↔ THIB ↔ MEC) section of the TH Module — Connectivity (TH ↔ THIB ↔ MEC). Severity level alarm (Alarm).
Reported action: Check the power-cable connection from P3 and P4 on THIB to the thermal head - reconnect or replace the cable if not OK. If the code persists after the cable is confirmed good, replace the THIB (Thermal Head Interface Board) or the thermal head itself, whichever the follow-up check points to..
Raised on the Drystar 5500/5503 when no power connection is detected between THIB (Thermal Head Interface Board) and the thermal head itself, shown on the local display as "Call service".
Full troubleshooting for HC11020
The complete diagnosis, cause tree, and step-by-step remedy for the TH Module — Connectivity (TH ↔ THIB ↔ MEC) subsystem are documented in the FSELIB Activion16 (TSX-031A) service manual — re-authored, web-first, with real figures.
Open the Activion16 service manualRelated TH Module — Connectivity (TH ↔ THIB ↔ MEC) 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.