Kyocera FS-2020D Service Manual page 108

2J0/2J1/2J2
POLRDYN
YC12-1
POLONN
YC12-2
PDMASKN
YC12-4
Engine PWB
OUTPEN
YC12-3
2-1-6
POLCLK
YC11-5
PDN
YC16-2
Main PWB
Drum
PCONT
YC11-12
SAMPLEN1
YC11-10
VDATAP1
YC11-8
VDATAN1
YC11-7
PCONT
YC9-7
SAMPLEN2
YC9-5
VDATAP2
YC9-3
VDATAN2
YC9-2
Figure 2-1-10Laser scanner unit block diagram
Laser scanner unit
Polygon
motor
Pin-photo
sensor
PD PWB
*: 45/47 ppm printer (EUR/USA model) only.
Laser
beam
Laser Laser
diode diode
APC APC
PWB 1
PWB 2*