Canon MX883, Руководство по обслуживанию, Страница: 59 / 80

(3) LF / Eject correction
After replacement of the feed roller, platen unit, LF / Eject encoder, carriage encoder film, or logic board in repair
servicing or in refurbishment operation, perform the adjustment to maintain the optimal print image quality.
If the print quality is considered unaffected by replacement of those parts, it is not necessary to perform LF / Eject
correction.
1) Print the LF / Eject correction pattern.
Click Print in the LF/EJECT Correction section of the Service Tool, select the paper source and the paper
type, and print the pattern. 5 sheets of A4 paper will be used for the pattern printing.
- Paper source: Select either Rear tray or Cassette .
- Media type: Select one from HR-101 , GF-500/Office Planner , HP Bright White , and Canon
Extra/STEINBEIS .
2) When printing is finished, the machine returns to be ready for selection of another function ("A function was
finished" is displayed on the screen).
3) In the printout, determine the Pattern No. in which streaks or lines are the least noticeable for the LF check
pattern and the Eject check pattern respectively.
(LF Pattern No. 0 to 4, Eject Pattern No. 0 to 4)
4) Select and set the correction values.
In the LF/EJECT Correction section of the Service Tool, select the Pattern No. (from 0 to 4) determined in
step 3) for LF and EJECT respectively, and click Set .
5) The selected LF and Eject correction values are written to the EEPROM, making the E-MIP correction value
(which was set at shipment from the production site) invalid.
Note: At the production site, the E-MIP correction, which is equivalent to the LF / Eject
correction, is performed using the special tool, and the E-MIP correction value is written to
the EEPROM as the valid data.
When LF / Eject correction is performed, the LF / Eject correction values become valid
instead of the E-MIP correction value (thus, in the initial EEPROM information print, "LF =
*" and "EJ = *" are printed, but the selected values are printed after the LF / Eject
correction).
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