Epson TM-L90-i Technical Reference Manual page 61

4
Move the knob forward/back or up/down, and align the line in the knob
with the position shown below.
Roll paper diameter for near end
detection
41 mm
36 mm
5
Tighten the adjustment screw on the detector.
6
Press the detection lever with your finger to check if it moves smoothly.
Vertical position Horizontal position
Top
Under (Default)
Horizontal position
Vertical position
Chapter 2 Setup
Left
Right
Knob
Knob
61
2