REV.-A
2.3.5.4 Plunger Drive Circuit
~.
The gate arrays E05A 15GA(7A) and E05A 16HA (3A) control this circuit to drive the plunger to open
and close the paper holding lever for paper auto loading/ejection. Figure 2-47 shows the drive
mechanism, Figure 2-48 shows the shows the plunger drive circuit and Figure 2-49 and Table 2-15
shows the on/off timing of the transistors during the plunger drive and paper holding.
Paper
Holdyoller~,~=,,,.
Holding
Lever
Figure 2-47. Plunger Mechanism
vu
+5V
GA
A
~::f
1
5GA
D4
——
Pcl
Cys
11
I
I
n
PLVU
I
I
I
I
I
I
?
I
I
GA
I
I
~::f16HA
PLNGR
I
I
“
I
P5
I
Cis
I
I
———.
Plunger
Gp
Figure 2-48. Plunger Drive Circuit
2-58
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