FUJITSU 10 ppm - Manual (Page 125)

6-16 User’s Manual
This printer counts the number of the printed sheets to estimate the life
of the consumables (print unit). The printer indicates the following
warning message when and after the count reaches a predetermined value.
READY REPLACE PARTS
When the warning message is indicated, press the READY button to put
the printer offline and press the MENU button to enter menu mode. The
Clear Warning message appears, indicating the expired unit by an
asterisk. When the print unit is expired, the message is:
PRINT UNIT*
However, depending on the print quality, you may not have to replace
print unit because you may suit be satisfied with the print quality.
Warning
Messages
Warning Messages