Electrical Component Defects; Sensors - Ricoh B264 Service Manual

ELECTRICAL COMPONENT DEFECTS

4.2 ELECTRICAL COMPONENT DEFECTS

4.2.1 SENSORS

Component (Symbol)
Scanner Home Position
(S1)
Platen Cover (S2)
Original Width (S3)
Original Length-1 (S4)
LD Unit Home Position
(S6)
Toner Density (TD)
(S7)
Paper Exit (S8)
Registration (S13)
Image Density (ID)
(S14)
Upper Paper Height
(S15)
Lower Paper Height
(S16)
B264/B265
CN Condition
Open
504-5(SIB)
Shorted
Open
504-8 (SIB)
Shorted
505-3, 4 Open
(SIB)
Shorted
Open
505-8,9
(SIB)
Shorted
Open
204-B2
(IOB)
Shorted
Open
222-5
(IOB)
Shorted
Open
202-B2
(IOB)
Shorted
Open
224-B2
(IOB)
Shorted
Open
203-5
(IOB)
Shorted
Open
220-2
(IOB)
Shorted
Open
214-2
(IOB)
Shorted
4-30
Symptom
SC121 is displayed.
SC120 is displayed.
APS and ARE do not function properly.
No symptom.
CPU cannot detect the original size
properly. APS and ARE do not function
correctly.
CPU cannot detect the original size
properly. APS and ARE do not function
correctly.
SC328 is displayed when the laser
beam pitch is changed.
SC327 is displayed when the laser
beam pitch is changed.
The add toner indicator blinks even if
there is toner in the development unit.
SC390-01 is displayed.
The Paper Jam indicator will light
whenever a copy is made.
The Paper Jam indicator lights even if
there is no paper.
The Paper Jam indicator lights even if
there is no paper.
The Paper Jam indicator will light
whenever a copy is made.
SC350-03 is displayed after copying.
SC350-01 is displayed after copying.
Add Paper is displayed even if there is
paper. If this condition occurred four
times, SC501-02 will be displayed.
SC501-01 is displayed.
Add Paper is displayed even if there is
paper. If this condition occurred four
times, SC502-02 will be displayed.
SC502-01 is displayed.
SM