14 Insert the toner cartridge into the machine as far as it will go.
Hold the toner cartridge and align the protrusions (A) on both sides of the toner cartridge to the guides (B) in the machine, then gently slide the toner cartridge into the machine as far as it will go.
Be sure to position the arrow mark (C) on the toner cartridge towards the inside of the machine.
A
B
B 
C
15 Close the front cover.
CAUTION
Be careful not to get your fingers caught.
NOTE
After you replace the toner cartridge and close the front cover, the machine should be ready for operating. If the machine returns to the ready state for operating, troubleshooting has been successful. If the machine does not return to the ready state for operating, confirm that the paper release levers are pushed back to their original position, and check to see that jammed paper is not left in the machine.
Troubleshooting