Canon NP6012 Service Manual page 81

* During Copying Operation
The DC controller advances the copy
counter on the PGP PCB each time a copy
is delivered. When the count reaches
29,000, it flashes the Replace Drum Unit
indicator on the control panel to inform the
user that the time for replacement is
approaching.
When the count reaches 30,000, the DC
controller turns on the Replace Drum Unit on
the control panel to inform the user that the
time for replacement is approaching. You
may make a further 100 copies after the indi-
cation has turned on, and you can check the
current count in service mode.
When the copy count reaches 30,100,
the DC controller turns on the Replace Drum
Unit on the control panel and suspends
copying operation while indicating 'CC' on
the count/ratio indicator. (In continuous
copying, the operation is suspended after
making all the copies.)
To reset the copier when its operation
has been suspended, replace the drum unit
with a new one.
Indicates
countratio
Indicates that the drum
unit must soon be
replaced.
* You may turn off the
indication in user
mode.
Indicates
count/ratio
Indicates that the copier
will soon stop operating.
It will stop operating
after making an
additional 100 copies.
* You can check the
current copy count in
user mode.
Indicates
'CC
Indicates that the drum
unit must be replaced.
Table 3-301
* You cannot make
copies unless you
replace the drum unit.