Bi-D Adjustment - Epson Photo750 Service Manual

EPSON Stylus Photo 750

5.3.5 Bi-D Adjustment

This adjustment is to correct differences in printing positions, which is
caused by slippage of printing timing in right and left directions during
the Bi-directional printing. The value adjusted in this section will be
stored as Bi-D corrected value in the EEPROM on the control board.
1. Select "Adjustment" on the main menu and press Return key.
Program goes to the Adjustment menu.
2. Select "Bi-Directional Adjustment" and press Return key. Following
screen appears.
3. Select "Print the Bi-D Adjustment Pattern", and press Return key
twice. 3 Bi-D patterns of the current setting value and +/-2 levels are
printed at variable dot and normal dot.
Adjustment
4. Refer to the Pattern Sample and see if all the lines are aligned from
the printed pattern.
5. Select "Adjust" on the Bi-D Adjustment Menu, if there is any non-
aligned lines.
6. Refer to the pattern sample below and input the variable dot and
normal dot. (Setting range: -36 +36)
7. Repeat Step 3 to 6 until Bi-D pattern become correct.
8. To finish the adjustment, press ESC key until the adjustment menu
appears.
Adjustment by Adjustment Program
Select "Plus"
value.
Figure 5-6. Bi-D Adjustment Pattern Sample
Revision B
Select "Minus"
value.
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