Ink Absorber Counter Setting; Dvd / Cd Print Position Correction - Canon MP640 Service Manual

(5) 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.

(6) DVD / CD print position correction

Set the DVD / CD print position value to a new EEPROM after the logic board is replaced in servicing.
This function can be also used in solving user complaints in the field, however, use of the application software is recommended
for solution of user complaints.
1) Before replacement of the logic board, check the DVD / CD print position value in EEPROM information print.
2) After replacement of the logic board, set the DVD / CD print position value in the service mode using the Service Tool, CD-R
Correction section.
3) If the DVD / CD print position value from the original logic board is not available due to the logic board failure, etc., print the
CD-R check pattern and confirm that the intersection of the X axis and Y axis is at the center of a DVD / CD.
<4-1. User Mode & 4-2. Service Mode>
45 / 54