OKI C6150 Reference Guide

For additional error messages, see 

your on-line User’s Guide.

Open the cover. Push the XXX 

Toner lock lever toward the back of 

the printer as far as it will go. Close 

the cover. If this does not clear the 

message, call your local service 

dealer.

If you have changed the LOW 

TONER setting to STOP, the 

ATTENTION light will blink and 

you must either replace the 

toner cartridge immediately or 

press the ON LINE button to 

continue printing.

Be sure you have a genuine OKI 

replacement toner cartridge on 

hand (see page 5).

Replace the XXXX toner cartridge 

with a genuine OKI Toner Cartridge 

(see page 5).

Toner XXXX is missing or an 

incorrect toner cartridge is 

installed. When this message 

appears, the printer stops after 

every 20 pages. To continue 

printing, you must open and 

close the top cover.

Replace the toner with a genuine 

OKI Toner Cartridge (see page 5).

The toner cartridge indicated 

(XXXX) is not a genuine OKI 

Toner Cartridge. When this 

message appears, the printer 

stops after every 20 pages. To 

continue printing, you must open 

and close the top cover.

Remove the toner cartridge and 

replace it with a genuine OKI Toner 

Cartridge (see page 5).

Replace the 

 image drum. 

(See the instructions supplied with 

the new image drum.)