Canon iP4680 Simplified Service Manual page 11

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).
<Ink absorber counter setting>
Set the ink absorber counter value to a new EEPROM after the logic board is replaced in servicing.
1) Before replacement of the logic board, check the ink absorber counter value in EEPROM
information print.
2) After replacement of the logic board, the ink absorber counter value should be set in the service
mode using the Service Tool.
In the Ink Absorber Counter section of the Service Tool, select Main from the Absorber
pull-down menu.
From the Counter Value(%) pull-down menu, select the value (in 10% increments) which is the
closest to the actual counter value confirmed before replacement of the logic board, and click
Set.
3) Print EEPROM information to confirm that the value is properly set to the EEPROM.
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