Troubleshooting HP Latex curing module.

Latex inks are water based therefore it requires decent amount of heat in order to evaporate water, dry and cure the latex polymer film. Curing modules are playing vital role in this matter. Depending on size of a Latex printer, they might have from three to four curing modules. Curing module consists of sensor, curing coils and back fan. The sensor measures the actual heat temperature inside curing chamber and sends data to curing control electronic board. The fan builds up chamber of hot air inside the curing module. Another task of the fan is to cool down heater when the printer finishes job output. All the components of a curing module can be tested either from the service menu or physically by using digital multimeter. 

Curing modules are tent to fail from time to time and as a result, printer throws non-continuable error codes:

16.41:10 – Module 1,

16.42:10 – Module 2,

16.43:10 – Module 3,

16.44:10 – Module 4 respectively. Each error corresponds to the respective curing module.

The resistive value of each curing module should be between 33 and 36 Ohms. 

If multimeter screen displays “Ol” Open loop or nothing at all, heater module must be replaced.

Simple human curiosity led me to dismantle one of the failed curing module to understand what causes these parts to fail, especially on summer times.

I found that one of the common reasons curing module fails is that the coil comes off the soldering.

Technically it is possible to weld the coil back if you have experience and tools. Please consult with your servicing company before doing anything, especially if you have limited or no experience at all on electronics. There is a risk of fire and an electrical shock hazard. Both power cords should be disconnected before doing anything.

 

Resistive value after welding 36 Ohms.