Epson LQ-2550 Technical Manual page 148

REV.-A
2.3.8.3 CS Motor Drive Circuit
Figure 2-94 shows the CS motor drive circuit and Table 2-58 lists the related factors for CS motor
control. The CS motor is driven using
In this printer, the color ribbon can be switched at every 40 steps (Refer to Figure 2-1 3.) from the color
home position, and the CS motor has an adjustable speed control.
The CS motor drive circuit supplies regulated voltage to control the motor.
13
A02
15
C02
14
(3 B) ~02
16
D02
R40
17
/
POT3
High
Low
2-2
only
R31
+35 +5
A
Figure 2-94. CS Motor Drive Circuit
Table 2-58. Related Factors for CS Motor Control
PG motor
Applied voltage [V]
5
35
and regulated +35 VDC.
phase switching
CS UNIT
r – – – - – – – – – l
I
I
2
Y
I
I
1
6
Y
I
I
\ /
8
\
I
' 'lo' '1
I
I – – – – – – – – – J
I
Remarks
State
Hold
Drive
Adjustable speed control is possible.
For constant speed, 450
2 - 1 0 2
CS MOTOR
Y
1 '
Y
I
I
I
,
I
I
I
COM
[PPS]
I
I
I