Epson Stylus Color 800, Руководство по обслуживанию

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Operating Principles
Rev. A
2-11
The pump unit switches its function depending on the direction in which the pump motor rotates, as show
in Table 2-8;
Motor rotation direction Function
Clock wise direction
(Forward)
Color ink absorption, Color ink false absorption,
Color ink Micro absorbing, Resetting the wiper
Counter clock wise direction
(Reverse) Black ink absorption, Black ink false absorption,
Black ink Micro absorbing, Setting the wiper
Note) The directions for the rotation are described when the motor is viewed from the pinion gear
side.
The pump motor for this printer also drives the ASF mechanism. See Table 2-6 for its specification. The
drive terms for the pump motor in the pump mode is as shown in Table 2-9.
Acceleration step Deceleration step
Absorption Mode Frequency Pulse
interval
W1-2
phase
2-2
phase
1-2
phase
W1-2
phase
2-2
phase
1-2
phase
High speed 1350 741

30
 
30

Normal speed 675 1481
 
18
 
18
Low speed 281 3559 0
 
0
 
At disengage 141 7092 0
 
0
 
Table 2-8. Pump Motor Rotation and Function
Pump Motor
(Clock Wise Direction)
Pump Motor
(Counter Clock Wise Direction)
Color Capping
Waste Ink
Drain Pads
Color Pump Side
Wiper Reset
Color Capping
Color Ink Absorbed
Black Pump Side Black Pump Side
Color Pump Side
No Color Ink Absorbed
Black Pump Side
Wiper Set
Black Pump Side
Waste Ink
Drain Pads
Black Ink Absorbed
Wiper
No Black Ink Absorbed
Black Capping
Black Capping
Figure 2-12. Pump Mechanism
Table 2-9. Pump Motor Drive Terms in the Pump Mode