Ricoh G147 - Electrical Component Defects; Sensors

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