Hi,
I uploaded some photos under the name "Epson-R220".
Epson-R220-6.jpg
shows which gear you can use to raise printing head.
At the other side (left side), there is an optic
sensor and a wheel with notches. You can easily
understand the top and the point next to top by
looking it while rotating the gear.
I hope this will help.
Best,
Dr.
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