Epson LQ-2550 Technical Manual page 146

2.3.8.2 PG Motor Drive Circuit
Figure 2-90 shows the PG motor drive circuit and Figure 2-90 shows the signal timing.
The PG motor is driven using only 2-2 phase switching and regulated +35 VDC. Table 2-57 lists the
relationships between various CS motor control factors.
PG MOTOR
B
D
High
I I
Low
1
Y
1
I
1
Figure 2-90. PG Motor Drive Circuit
5
7)
I
o
50
or
o ~
Figure 2-91. PG Motor Drive Circuit Signal Timing
Table 2-57. Motor Control Factors
PG motor
Applied Voltage [V]
5
35
+35
I I
Remarks
State
Hold
2 - 1 0 0
R9
7
6
B O 1 (~c8u)
3
2
DO1
I I
g
- - - - -