Electrical Component Defects - Ricoh SP5 Series Service Manual

June 30, 1998

7.2 ELECTRICAL COMPONENT DEFECTS

7.2.1 SENSORS
Component
(Symbol)
Scanner Home CN312-7
Position (S1)
(SBICU)
Original Width CN312-
(S2)
(SBICU)
Original CN305-7
Length-1 (S3)
(SBICU)
Original CN314-3
Length-2 (S4)
(SBICU)
LD Unit Home CN218-8
Position (S5)
Drum Potential CN206-
Sensor (S6)
Toner Density CN211-
(TD) (S7)
Image Density CN206-
(ID) (S8)
Toner End (S9) CN211-
Toner CN268-7
Collection
Motor (S10)
CN207-
Recycle Toner
(S11)
CN Condition
Stays On
Stays Off
Stays On
4.5.6
Stays Off
Stays On
Stays Off
Stays On
Stays Off
Stays On
(IOB)
Stays Off
Open
A12
(IOB) Shorted
Stays On
B6
(IOB) Stays Off
Open
B11
(IOB) Shorted
Open
B2
(IOB) Shorted
Stays On
(PFB) Stays Off
Stays On
B2
(IOB) Stays Off
ELECTRICAL COMPONENT DEFECTS
Symptom
SC121 is displayed.
SC120 is displayed.
The CPU cannot detect the original size
properly. APS and ARE do not function
correctly.
The CPU cannot detect the original size
properly. APS and ARE do not function
correctly.
The CPU cannot detect the original size
properly. APS and ARE do not function
correctly.
The CPU cannot detect the original size
properly. APS and ARE do not function
correctly.
The CPU cannot detect the original size
properly. APS and ARE do not function
correctly.
The 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 machine quits auto process control and
enters fixed toner supply mode.
SC390-01 is displayed.
SC390-01 is displayed.
SC350-03 is displayed after copying.
SC350-01 is displayed after copying.
"Toner End" is displayed even if there is
enough toner in the toner hopper.
"Toner End" is not displayed even if there is
no toner in the toner hopper.
SC495 is displayed.
SC495 is displayed.
SC495 is displayed.
SC495 is displayed.
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