Electrical Component Defects; Sensors - Ricoh G147 Service Manual

4.2 ELECTRICAL COMPONENT DEFECTS

4.2.1 SENSORS

Component
LD Unit Home
Position
Toner Density (TD)
Paper Exit
Registration
Image Density (ID)
Upper Paper Height
Lower Paper Height
SM
CN Condition
SC328 is displayed when the laser beam
Open
pitch is changed.
204-B2
(IOB)
SC327 is displayed when the laser beam
Shorted
pitch is changed.
The Add Toner indicator blinks even if there
Open
222-11
is toner in the development unit.
(IOB)
Shorted SC390 is displayed.
The Paper Jam indicator lights whenever a
Open
print is made.
202-B2
(IOB)
The Paper Jam indicator lights even if there
Shorted
is no paper.
The Paper Jam indicator lights even if there
Open
is no paper.
224-B2
(IOB)
The Paper Jam indicator lights whenever a
Shorted
print is made.
Open SC352 is displayed after printing.
203-5
(IOB)
Shorted SC350 is displayed after printing.
Add Paper is displayed even if there is
Open paper. If this condition occurred four times,
220-2
SC501 will be displayed.
(IOB)
Shorted SC501 is displayed.
Add Paper is displayed even if there is
214-2
Open paper. If this condition occurred four times,
(IOB)
SC502 will be displayed.
4-35
Symptom
G147