Olivetti PG L2555 Service Manual page 149

2-1-2 Drum section
The drum section consists of the drum, the charger roller unit, and the cleaning unit, and the drum surface is
uniformly charged in preparation for formation of residual image by laser beam.
(1) Charger roller unit
The drum surface is uniformly charged
by contacting the roller which gave the electric charge and was charged on the drum surface, and rotating it.
1. Drum
2. Charger roller
EPWB
YC19-4
YC19-5
YC19-6
YC4-10
4
Figure 2-1-7 Charger roller unit
EECLK
YC2-1
EESIO
YC2-3
MHVCLK
MACCNT
MDCCNT
DMOTCW
YC4-7
DMOTRDYN
YC4-8
DMOTCLKN
YC4-9
DMOTONN
Figure 2-1-8 Charger roller unit
3
2
1
3. Charger cleaning roller
4. Charger case
R-LPWB DRRPWB
HVPWB
Main charger
roller
6
5 DRM
4
3
Ground
2-1-4
DRPWB
Drum