MX-C250 OPERATIONAL DESCRIPTIONS 11 – 13
9. LSU section
A. Electrical and mechanism relation diagram
LSUFM
PGM1
1
3
2
3
10
6
9
9
8
7
5
6
Signal name
Name
Function and operation
LSUFM
LSU fan
Cools the LSU PWB section.
PGM 1
Polygon motor
Rotates at a constant speed to scan laser beams. The polygon mirror motor rotates at a constant speed having
four mirrored sides to reflect two lase beams per color.
No.
Name
Function and operation
1
LD PWB
To convert to a laser beam switching data sent from the LSU-PWB. And controlling a laser emission and laser
power.
2
Collimator lens
Focuses laser beams.
3
f
lens
To equalize main scanning direction laser beam dots distance. (To make laser dot distance of an end and the
central part of the OPC drum the same). In addition, to condense a laser beam to BD (beam detector).
4
Mirror
Reflects laser beams to the OPC drum.
5
Incident cylindrical lens
Focuses laser beams.
6
BD PWB
To detect the laser scan timing. (Beam Detection)
7
Filter glass
Prevents dust and toner from entering inside the LSU cavity.
8
Laser skew adjustment plate
Adjusts laser skew in the main scanning direction for the OPC drum.
9
BD mirror
Guides laser beams to the BD (Beam Detector).
10
LSUcnt PWB
To covert the image data sent from MFPC-PWB to switching data and transfer it to LD-PWB.
