Ricoh M040 Service Training page 76

LD Unit - C/M
LD Unit - K/Y
Two LD units, two hexagonal mirrors
One laser synchronizing detector board (LSD)
Slide 76
Laser exposure for magenta and cyan starts from the left side of the drum,
but for yellow and black it starts from the right side of the drum.
This is because the units for magenta and cyan are on the other side of the
polygon mirror from the units for yellow and black.
Overview
Polygon Mirrors
76
MD-P1b / M040 / C311N
MD-P1c / M041 / C312DN
LSD