Star Micronics LC-7211 Technical Manual page 31

(3) Paper end Detector
The paper end Detector is located in the paper chute unit. The A/D converter in the CPU detects the presence or
absence of paper.
(4) Release lever switch and lever switch Adjustment
Detecting
signal
Fig. 2-11 Release lever switch circuit and Adjustment lever switch circuit
R1
Detecting
signal
R3
Detecting
signal
R6
Detecting
signal
Fig. 2-10Paper end detector circuit
Control Method
Output
( V )
0
5
R1
Control Method
Output
( V )
0
5
+5V
+5V
R2
R5
R4
R8
R7
R9
Detection
No paper
Paper present
+5V
R2
Leaf switch
Release Adjustment
Lever SW Lever SW
Tractor Normal mode
Friction Multi-part mode
– 27 –
Friction
Skew
Tractor