Kyocera KM-C2525E Service Manual page 285

(2) Laser scanner section
The image data scanned by the CCD PWB (CCDPWB) is processed on the main PWB (MPWB) and transmitted from
engine PWB (EPWB) 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.
To drums
Lens B
Mirror B
Lens A
Pin-photo
sensor
PDPWB
Figure 2-1-13 Laser scanner section
(1) Lens B
(2) Lens B stay
(3) Mirror B
(4) Dust shield glass
(5) LSU blade
Laser scanner unit (LSU)
LDU mirror
Laser beam
Polygon
mirror
PM
INTEMS1
Figure 2-1-14 Laser scanner section block diagram
(6) Lens A
(7) Polygon motor (PM)
(8) Scanner lid
(9) Scanner frame
(10) Mirror A
Laser
diode
APCPWB-Y
Collimate
lens
APCPWB-M
APCPWB-C
APCPWB-BK
2JL/2JJ/2JG/2JD
EPWB
EPWB
APC3_CNT
YC16-A7
ENBL3
YC16-A9
S/H3
YC16-A10
VDO3_P
YC16-A11
VDO3_N
YC16-A12
APC1_CNT
YC16-A14
ENBL1
YC16-A16
S/H1
YC16-A17
VDO1_P
YC16-A18
VDO1_N
YC16-A19
APC2_CNT
YC16-B7
ENBL2
YC16-B9
S/H2
YC16-B10
VDO2_P
YC16-B11
VDO2_N
YC16-B12
APC4_CNT
YC16-B14
ENBL4
YC16-B16
S/H4
YC16-B17
VDO4_P
YC16-B18
VDO4_N
YC16-B19
IN_TEMP1
YC16-B4
SCCLK
YC16-A1
SCRDY
YC16-A2
SCREM
YC16-A3
BD
YC16-B2
2-1-11