Service manual

ELECTRICAL COMPONENT DEFECTS
SM 4-67 G130/G131
Trouble-
shooting
Component CN Condition Symptom
Open
Toner near end may not be
detected even when the toner near
end condition is satisfied.
Toner end sensor
K: 209-A2
Y: 206-A7
C: 206-A4
M: 206-A1
Shorted
Toner near end may be detected
even when the toner near end
condition is not satisfied.
Open
Drum gear
position sensor
K: 213-13
CMY: 210-B12
Shorted
SC440
Open
Belt mark sensor 215-3
Shorted
Dancing control does not function.
Open
Waste toner near full message
shows, even when a waste toner
near full condition does not exist.
Waste toner
sensor
213-4
Shorted
Waste toner near full message is
not shown even when a waste toner
near full condition exists. This
causes a waste toner leak.
NOTE: The CN numbers are the connector numbers on the BCU.