Olivetti d-Color 201MF Theory Of Operation page 52

Theory of Operation Ver. 1.0 Sep. 2008
C. Color dev. unit engaged position detection
• The color PC motor is the drive source of the developing section/Y, M, C
• When the color dev. unit engaged motor rotates the coupling detection gear, the color
dev. unit engaged gear is engaged with the color drive transmission gear. In this condi-
tion, rotation of the color PC motor is transmitted to the developing section/Y, M, C via the
color drive transmission gear.
• While the gears are engaged with each other, when the color dev. unit engaged motor
starts running again, the color dev. unit engaged gear is disengaged and the developing
section/Y, M, C stops rotating.
• The engaged position of the color dev. unit engaged gear is detected by the color dev.
unit engaged position sensor and the light blocking plate of the coupling detection gear.
.
*Back view
Coupled
Coupling detection gear
Color dev. unit engaged position sensor (PS19)
Coupling released
Y109670-2
Color drive transmission gear
Color dev. unit engaged gear
Color dev. unit engaged motor (M4)
A02ET2C525AA
Color dev. unit engaged gear
A02ET2C526AA
Theory of Operation
12. Developing section
A02ET2C527AA
Blocked
A02ET2C528AA
Unblocked
45