Always open the V3800 .exe file with administrative privileges on Windows.
Standard cleaning cycles often fail to clear stubborn clogs. The Service Tool V3800 can trigger a "Deep Cleaning" or "Ink System Flush" that is more powerful than the option found in the basic Windows print menu. canon service tool v3800 best
Using the tool incorrectly can "brick" your printer’s logic board. Only click buttons you understand, and never disconnect the cable while the software is "Setting" data. Conclusion: The DIY Life-Saver Always open the V3800