Fig. 6-7; Fig. 6-8; Fig. 6-9- Page 157

CHAPTER 6  TROUBLESHOOTING

6-35

NOTE:

Clean the drum unit as follows:

(1)  Remove the toner cartridge from the drum unit  Place the printing samples in front of the

drum unit, and find the exact position of the image defect.

Fig. 6-7

(2)  Turn the drum gear by hand while looking at the surface of the photosensitive drum.

Fig. 6-8

(3)  Wipe the surface of the photosensitive drum with a cotton swab until the dust or paper

powder on the surface comes off.

Fig. 6-9

!

CAUTION:

• 

Do not wipe the surface of the photosensitive drum with something sharp. (ball-point pen
etc.)

• 

Use cleaning liquid which is a 50-50 mixture of ethyl alcohol and pure water.

Position of smudge on
the drum

94mm interval

Printing sample

Drum unit

Photosensitive drum

Photosensitive drum