6. Pull out the drum unit.
7. Check or replace the drum unit and refit
all the removed parts.
8. When replacing the new drum unit, pro-
ceed as follows:
1) Performs maintenance mode U119
(drum setup) (see page 1-3-73).
2) Performs maintenance mode U140
(AC calibration) for 55 ppm model
only (see page 1-3-80).
3)Performs maintenance mode U464
(Calibration) (see page 1-3-154).
4)Performs maintenance mode U412
(Adjusting the uneven density) (see
page 1-3-146).
5)Performs maintenance mode U464
(Calibration) (see page 1-3-154).
6)Performs maintenance mode U410
(Adjusting the halftone automatically)
(see page 1-3-138).
Figure 1-5-52
1-5-30
2LL/2LJ/2LH-1
Drum unit