B245/B276/B277/B268/B269 Service Manual 18-Jan-06
133
Electrical Component Defects
Sensors
Component CN Condition Symptom
Open
The Paper Jam message will appear
whenever a copy is made (paper has not
reached the sensor).
Registration
111-2
(BICU)
Shorted
The Paper Jam message appears even if
there is no paper at the sensor.
Open
The Paper Jam message will appear
whenever a copy is made except for 1st
and by-pass tray feeding.
Relay
111-5
(BICU)
Shorted
The Paper Jam message appears even if
there is no paper at the sensor.
Open
The Paper End indicator lights when the 1st
paper tray is selected, even if there is paper
in the tray.
Upper Paper End
114-2
(BICU)
Shorted
The Paper End indicator does not light
when the 1st paper tray is selected, even if
there is no paper in the tray. The Paper Jam
message will appear whenever a copy is
made from the 1st paper tray.
Open
The Paper Jam message will appear
whenever a copy is made from an optional
paper tray unit.
Vertical Transport
110-2
(BICU)
Shorted
The Paper Jam message appears even if
there is no paper at the sensor.
Open
The Paper End indicator lights when the
2nd paper tray is selected, even if there is
paper in the tray (B276/B277/B268/B269
models only).
Lower Paper End
113-6
(BICU)
Shorted The Paper End indicator does not light
when the 2nd paper tray is selected, even if
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