Canon PIXMA MP620 series Manuale di servizio - Pagina 39

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After replacement of the feed roller, platen unit, LF encoder, encoder film, or logic board in repair servicing or in refurbishment operation,

perform the adjustment to maintain the optimal print image quality.

1) Print the LF / Eject correction pattern.

Click LF/EJECT of the Service Tool on the connected computer, select the paper source and the paper type, and print the pattern. 5 sheets

of 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 ("Service Mode Idle" is displayed on the LCD).

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) 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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