6) Rotate the drum for the width of the cleaning movement to 5 to 10 cm, and repeat steps 3) through 5) until you have cleaned the entire surface of the drum.

7) Remove the cleaning blade assembly.

8) Insert a ruler [6] between the magnet roller [4] and the scraper [5], and move it back and forth from the front to the rear and then from the rear to the

front to pulverize lumps of waste toner.

9) Turn the magnetic roller [4] to make sure that the coating of waste toner is even.

If it is as follows, repeat step 8):

- The coating is uneven in the form of lines.

- The coating has dents in parts.

- The coating has clumps of toner.

10) Remove the cleaning blade from the cleaning blade assembly.

11) Butt the turned or replaced cleaning blade [7] against the rear of the blade retaining plate [8] while keeping the edge flush.

When butting the blade, be sure to use your fingers to keep it firmly in contact.

12) Tighten the screws on the blade retaining plate in the sequence indicated.

- From 1 to 5, tighten temporarily.

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