j Push down the green lock lever and take the toner cartridge out of the drum unit.

k Turn the drum unit as shown in the illustration. Make sure that the drum unit gear (1) is on the left hand side.

1

Routine maintenance

l Use the numbered markers next to the drum roller to find the mark. For example, a dot in column 2 on the check sheet would mean that there is a mark in the "2" region of the drum.

A

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