Olivetti d-Color 201MF Theory Of Operation page 83

15. Toner collecting section
B. Waste toner level check control
• The waste toner level is determined by the number of times that the waste toner full sen-
sor is blocked and unblocked while the toner collecting screw makes two rotations.
• As the amount of waste toner increases, the actuator is raised by waste toner and its
amplitude decreases. This reduces the number of times that the waste toner full sensor
is blocked and unblocked.
• Once the machine detects there is a toner full condition, the waste toner full indication is
not reset until the waste toner box is replaced with a new one.
Waste toner full sensor (PS8)
Actuator
amplitude
C. Waste toner full sensor actuator movement
• The following illustration shows the waste toner full sensor actuator movement while the
toner collecting screw makes one rotation. The amount of waste toner is determined by
the number of times that the waste toner full sensor is blocked and unblocked while the
toner collecting screw makes two rotations.
Actuator movement in the waste toner empty condition
Block 2 Unblock
2
76
Actuator
Waste toner
A02ET2C561AB
Block 1 Unblock 1
Actuator
Block 2
Actuator amplitude
Theory of Operation
Theory of Operation Ver. 1.0 Sep. 2008
Actuator
amplitude
Waste toner empty
Waste toner full
A02ET560AB
Waste toner full sensor (PS8)
Number of times that the toner full sensor
is blocked and unblocked
Unblock Block 3
3
A02ET563AB
Unblock 4
Y109670-2