Chapter 4 Adjustment

Rev. A 4-11

4.2.2.5 Bi-D Alignment Adjustment
This adjustment defines the carriage driv e control param eters to compensate the v ariation in m echanism
components characteristic so that the print position become even i n bi-di rectional printing. This adjustm ent
is required when one of the following servic e i s made:
Replacing the printer mechanism
Replacing the main board (C200 MAIN)
Replacing the CR Motor assembly
Replacing the carriage assembly and related component s
The values defined with this adjustment are stored i n EEPROM on the main board.
1. If the printer mechanism is replac ed, the ink charge operation and the VH Setting operation shoul d
be performed prior to this adjustment. (Refer to section 4.2.2.2 and 4.2.2.3)
2. Connect the PC to the printer and turn on the printer.
3. Go to the main menu [SCREEN-4].
4. Input “4” to select “Bi-d Adjust” and press ENTER key.
5. The program prints the check pattern (one with the com pensation value=“0” and another two patterns
each printed with the value “-2” and “+2”). S el ect the number of the pattern with which the pri nt ed lines
are most properly aligned, and input the number and pr ess ENTER k ey at the menu [SCREEN-7]. Then,
the program print the sample pattern with the c om pensation value you have selected.
If all patterns printed by the program ar e completely mis-aligned, conf irm the inclination of m isalignment
with the pattern printed with the value “0” by checking the relative position of the EVEN line to the ODD
line:
If EVEN line is shifted to RIGHT = Requires (-) value
If EVEN line is shifted to LEFT = Requires (+) value
Then, once input “Y” and press ENTER key to return to the main menu, and input “E” to select “Go to
SETTING MENU” and press ENTER key. At the setting menu screen [SCREEN-3], input “6” to select “BI-
D Center” and input the approximation num ber t hat corresponding to the inclination of m isalignment you
have confirmed previ ousl y. Af t er changing the reference value for t he B i -D alignment check printing,
input “1” to select “(Production)” and back to the main menu and continue f or t he Bi -D alignment
adjustment.
6. If the alignment is correct, i nput the pattern number at the menu [SCREEN-7] and af ter completing
the sample pattern printing, input “Y” and press ENTER key to define the com pensation value.

Timing to write the specified value to EEPROM: Upon pressing ENTER key after input “Y”.

WORK POINT
[Printed pattern]
Input (-) value
Input (+) value
Figure 4-7.Bi-D Alignment