Electrical Component Defects; Sensors - Ricoh B039 Service Manual

ELECTRICAL COMPONENT DEFECTS

4.2 ELECTRICAL COMPONENT DEFECTS

4.2.1 SENSORS

Component
Registration
Upper Relay
Upper Paper End
Lower Vertical
Transport
Lower Paper End
By-pass Paper
Size
By-pass Paper
End
Exit
Toner Density
B039/B040/B043
CN Condition
Open
312-2
(IOB)
Shorted
Open
312-5
(IOB)
Shorted
Open
314-2
(IOB)
Shorted
Open
316-2
(IOB)
Shorted
Open
317-6
(IOB)
Shorted
311- Open
1,2,4,5
Shorted
(IOB)
Open
311-7
(IOB)
Shorted
Open
331-2
(IOB)
Shorted
Open
325-3
(IOB)
Shorted
The Paper Jam message will appear whenever
a copy is made (paper hasn't reached the
sensor).
The Paper Jam message appears even if there
is no paper at the sensor.
The Paper Jam message will appear whenever
a copy is made except for 1st and by-pass tray
feeding.
The Paper Jam message appears even if there
is no paper at the sensor.
The Paper End indicator lights when the 1st
paper tray is selected, even if there is paper in
the tray.
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.
The Paper Jam message will appear whenever
a copy is made from an optional paper tray unit.
The Paper Jam message appears even if there
is no paper at the sensor.
The Paper End indicator lights when the 2nd
paper tray is selected, even if there is paper in
the tray (B040/B043 models only).
The Paper End indicator does not light when
the 2nd 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
2nd paper tray (B040/B043 models only).
The CPU misdetects or is not able to detect the
size of the paper set in the bypass tray, causing
possible misfeeds when feeding from this tray.
The Paper End indicator lights when the bypass
tray is selected, even if there is paper in the
tray.
The Paper End indicator does not light when
the bypass 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
bypass tray.
The Paper Jam message will appear whenever
a copy is made (paper hasn't reached the
sensor).
The Paper Jam message appears even if there
is no paper at the sensor.
SC390 is displayed.
4-8
Symptom
SM