Canon Pro9000 Mark II Service Manual page 49

Confirm that "OK" is printed at the bottom of the paper (blue arrowed area in the photo above).
If it reads "NG," perform LF / Eject correction again. (Blank paper feeding is not necessary.)
(4) 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.
<4-1. User Mode & 4-2. Service Mode>
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