HC11120 — Thermal printhead heatsink temperature too high

What HC11120 means

On DryStar 5500 (Type 5364/100) and DryStar 5503 (Type 5364/300) CT systems, status code HC11120 indicates: Thermal printhead heatsink temperature too high. The code originates in the TH Module — Thermistor Temperature Measurement section of the Thermal Print Head (TH) Module. Severity level warning (Warning).

Reported action: Check that the printhead has enough airflow — the air inlets and outlets must be completely free — and check the cooling fan F1 if airflow is confirmed adequate. If the reading is still high after that, the cause is either one or more defective thermistors on the thermal head or an incorrect heatsink-temperature measurement on the MEC board — power off the printer and replace the fan (Part F1), the thermal head (Part TH) or the MEC board, whichever the follow-up check points to..

Raised on the Drystar 5500/5503 thermal print head (TH) module when the heatsink-temperature measurement of the thermal head is too high. The engine is still allowed to print but image quality may decrease. Paired in the appendix with the equivalent low-temperature code, HC11119.

Related TH Module — Thermistor Temperature Measurement codes