Epson LQ-510 - Home-Position Seek

REV.-A
PRINCIPLES OF OPERATION
Home-Position Seek
The control that causes the carriage to move to the home position when the power is turned on is called
home-position seek. Figure 2-58 shows home-position seek operation.
When power is applied, the printer executes 2-2 phase excitation for 20 or 30 ms (regardless of the phase-
switching timing) and checks the HOME signal. The result of this check determines whether the starting posi-
tion should be 1 or 2. The carriage enters the home position only once during the initialization.
k
IH
ome
Position Area r
I
I I
CR Movable Area
Printing Area
0
<
I 1
4steps
I
r-
End of Home-Position Seek
---------------------
Constant
Constant
Acceleration
Acceleration
Figure 2-56. Home-Position Seek
LQ-510
2-49