Epson LX-810 Technical Manual

REV.-A
2.2.5.5
Printhead Drive Circuit
The drive pulse width is adjusted using CPU port PC6.
+24V
J
8
0 HDCOM
I
11
GA
O HD1
HD1 63 R20,,, IK
D1647 Q7
5
E05A30
o HD2
HD2 62 R21,,, IK
D1647 Q9
(3 B)
9
*
o HD3
HD3 61 R22,kh 1 K
D1647 Q8
3
0 HD4
HD4 60 R23A,, 1 K
D1647 Q1O
10
0
HD5
HD5 59 R24,,, IK
D1647 Q12
1
0 HD6
HD6 58 R25,,, 1 K
D1647 QI 1
12
0
HD7
HD7 ‘
R26&,, IK
D1647 Q13
2
0
HD8
HD8
2
R27,,, 1 K
4
0
HD9
3
R28,,, 1 K
HD9
I
+’
GP
Figure 2-44. Printhead Drive Circuit
I [
I 1
I
J
1 J
20V
0.5
ms
CN8
HEAD
Figure 2-45. Printhead Driving Waveforms
2-41

Epson LX-810 Specifications

General

Print Method	Impact dot matrix
Number of Pins	9
Character Sets	96 characters (USASCII)
Line Spacing	1/6 inch
Paper Path	Rear
Interface	Centronics parallel
Noise Level	55 dB (A)