In the drop-down menu next to , ensure it is set to Main .
Change the "Counter Value" or "Absorber" dropdown to (or "Main_Black" and "Main_Color" depending on your specific model). Canon service tool v3600
: If the tool displays "Error 006," it typically means the printer is not correctly in Service Mode or the drivers are conflicting with the tool. Compatible Models In the drop-down menu next to , ensure it is set to Main