Oki 5780 manual Replacing the Toner Cartridge, Toner Yield

Replacing the Toner Cartridge

!This machine will only operate using the toner cartridge specified for this machine. The use of any other toner will result in the display of an operation error and in machine malfunction.

Refer to “Options and Accessories” for information on obtaining the correct toner cartridge.

!Warning: Be careful when handling the toner cartridge. Do not let toner spill onto your clothing or other porous materials. If you experience any problems with toner, see the “Installation, Safety.”

Toner Yield

The number of pages you can print with one toner cartridge depends on the type of documents you usually receive or copy.

A toner cartridge will print about 5,000 pages/letter size of standard business communications at a typical print coverage of 4% (equivalent of CCITT No. 1 test chart).

The first toner cartridge installed in a new image drum unit will have a decreased yield because the image drum unit has to be filled.

If your machine displays REPLACE TONER CART, replace the toner cartridge with a new one. However, if the print quality is good enough, you can continue to use the toner cartridge without replacing it until the print quality becomes unsatisfactory. 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 8). If the print quality does not improve, replace the toner cartridge.

User’s Guide: English 203