Olivetti d-Copia 300 Service Manual page 283

(2) Image printing
The image data scanned by the CCD PCB (CCDPCB) is processed on the main PCB (MPCB) and transmitted as image
printing data to the laser scanner unit (LSU). By repeatedly turning the laser on and off, the laser scanner unit forms a
latent image on the drum surface.
Figure 2-1-9 Laser scanner unit (1)
1 Laser diode PCB (LDPCB)
2 Collimator lens
3 Cylindrical lens
4 Polygon motor (PM)
5 Polygon mirror
6 fθ lens
7 Mirror
8 Mirror
9 BD sensor mirror
0 Cylindrical correcting lens
! BD sensor
2FD/2FF/2FG
2-1-9