Epson 4003353 - Manual (Page 83)

Color Service Adjustments
4.1.2 (Bidirectional Printing) Alignment Adjustment
The bidirectional alignment is required when the printer mechanism, the MAIN board, or the
printhead (board) is replaced. By perfo this adjustment, a compensation value is determined
to compensate for the deviation in the print position. This deviation can be caused by the different
print speeds due to the tolerance of the mechanical components, and the deviation of print timing
between odd-numbered lines and even-numbered lines in
printing. The printer stores
the compensation data in the on the C137 MAIN board and refers to this data when
performing bidirectional printing.
1. the PC to the target printer and turn the printer on.
2. Execute BASIC on the PC and run the program “VERXXX.BAS”.
1. Destination Setting
2. Head Angle Confirmation Pattern Printing
(Head Front/Rear Vertical Position Printing)
3. Head Front/Rear Vertical Position Confirmation
4. Head Gap Adjustment
5. Adjustment
6. Internal Timer Reset
7. END
3. When the main menu appears, choose Adjustment” by entering “5” from the keyboard.
(The printer prints the check pattern with a sample compensation value.)
4. The next menu appears on the display.
Input value No. (If input key.)?-
5. If the sample printing is not vertically aligned both the odd-numbered lines and
numbered lines, enter a compensation value in the range from –30 to +30.
■ Positive compensation value: Shifts the 2nd line to the left
■ Negative compensation value: Shifts the 2nd line to the right
When the sample printing becomes vertically aligned in both lines, press [Y] and ENTER; this
returns you to the main menu.
6. Choose “END’’byentering “7” from the keyboard. The next message appearson the display.
All parameters that you have specified so far
are written to
upon power off.
Turn the printer OFF, Now!
7. Turn off the printer.
Rev
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