Bi-D Adjustment - Epson Stylus Color 1520 Service Manual

EPSON Stylus COLOR 1520

4.1.7 Bi-d Adjustment

This is required when the CR unit or CR motor is replaced or removed. You perform this operation to adjust
the deviation that occurs between lines printed in 2 different print directions when the printer is in the Bi-
directional printing mode.
1. Connect the printer to the host computer with a parallel interface cable.
2. Start the adjustment program on the host computer.
3. Input the customer data. (Refer to Section 4.1.2.)
Move the cursor using ↑ or ↓ to select ADJUST in the 1st menu. Then press Enter; the main menu
4.
appears on the monitor.
Move the cursor using ↑ or ↓ to select BI-D ADJUSTMENT. Then press Enter; the printer prints out the Bi-d
5.
adjustment patterns in the draft and LQ modes.
6. Adjust the deviation referring to the flowchart below to make the deviation (C) less than 1/2 of the line
width in the draft mode and 1/3 of the line width in the LQ mode. (Refer to Figure 4-8.)
1. Press the Space key to repeat the operation. Press the Enter key to exit BI-D ADJUSTMENT; the main
menu appears.
Select other adjustments using ↑ or ↓, or select RETURN TO 1st MENU to exit the main menu.
2.
Move the cursor using ↑ or ↓ to select END and press Enter to exit the adjustment program.
3.
;
Adjusted values are not stored in the EEPROM until the printer is turned off. Therefore be sure to
turn off the printer once after the adjustment program is executed.
;
The set values are transferred to the printer when exiting this operation. Therefore do not turn off the
printer before executing "Bi-d Adjustment".
4-10
Start
Select Bi-d ADJUSTMENT in the
main menu.
Print out the Bi-d adjustment
pattern in the draft and
LQ modes.
In which direction
is printing skewed?
NG
How is Bi-d
printing?
Enter the value with
OK
the ↓ key.
Press Enter.
Proceed to the main menu.
Figure 4-8. Bi-d Adjustment Flow Chart
CAUTION
Enter the value with
the ↑ key.
Enter 0.
Print out the Bi-d adjustment
pattern in the draft and
LQ modes.
Wrong
Now how is Bi-d
Press the Space key.
printing?
OK
(C)