OKI 4580 Manual De Usuario

The number of pages you can print with one toner
cartridge varies depending on the type of docu-
ments you usually receive or copy. A toner car-
tridge will print about 1,875 pages/Letter size of
standard business communications at a typical
print coverage of 4% (equivalent of ITU-T No. 1 test
chart). The first toner cartridge installed in a new
image drum unit will have a decreased yield be-
cause the image drum unit itself has to be filled.

If your machine displays REPLACE TONER
CART., replace the toner cartridge with a new one.
However, if the print density is high enough, you
can continue to use the toner cartridge without
replacing it until the print density becomes too low.
If the print density becomes low even before your
machine displays REPLACE TONER CART.,
gently wipe the lens surface of the LED array
(see Step 7).

If the print density does not improve, replace the
toner cartridge. When your machine’s display
shows CHANGE DRUM, replace the image drum
unit.

 If you open the top cover, you will see a

label that reads: (CAUTION-HOT). This portion is
extremely hot and must not be touched under
any circumstances.

1 Lift the top cover into an upright position.

Fig11_13.eps

2 Grasp the control panel. Pull upward and

toward you until it releases. Swing the control
panel up and out of the way.

Fig11_14.eps

3 Pull the gray lever on the old toner cartridge all

the way toward you. Carefully pull the old toner
cartridge out of the image drum unit. Dispose of
it in the plastic bag you received with your new
toner cartridge.