2.5.3. 2 or 4 heater
To verify if your printer is equipped with 2 or 4 heaters, please refer to the photo's mentioned below.
Rockhopper II series printers – Maintenance Manual
Rockhopper II 2 heater printer
Rockhopper II 4 heater printer
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AP-74065, Rev. 1.2, 27/09/04