![](/images/new-backgrounds/1272585/272585365x1.webp)
t Hold the handle of the toner cartridge and slide the toner cartridge into the drum unit. Make sure that you match the toner cartridge color to the same color label on the drum unit, and make sure that you fold down the toner cartridge handle (A) once the toner cartridge is in place. Repeat this for all the toner cartridges.
A
1
2
3
4
Troubleshooting and routine maintenance
u Put the drum unit back in the machine as follows.
1Make sure that the gray lock lever (1) is in the up position and put the drum unit in the machine. Push down the gray lock lever (1).
C
1
1 C - Cyan
2 M - Magenta
3 Y - Yellow
4 K - Black
1