Plunger Drive Circuit - Epson LQ-1050 Technical Manual

2.3.9 Plunger Drive Circuit

The CPU to open and close the paper holding
controls this circuit to drive the plunger lever for paper
shows the drive mechanism, Figure 2-71 shows the plunger drive
auto loading/ejection. Figure 2-70
circuit and Figure 2-72 and Table 2-27 show the on/off timing of the transistors during the plunger
drive and paper holding.
Refer to Section 2.3.8.1 for the paper auto loading/ejection sequence.
Paper Holding Roller
Holding
Lever
Fig. 2-70. Plunger Mechanism
+ 5
CN12
I
+ 3 5
CPU
+ 5
Plunger
( 7B)
D53
4 B
R24
1
8 5
9
0 3 6
.
Fig. 2-71. Plunger Drive Circuit
2-67