Electrical Component Defects
D115/D116 6-34 SM
6.2 ELECTRICAL COMPONENT DEFECTS
6.2.1 SENSOR/SWITCH
Sensor Connector Message Remarks
Registration
Sensor
CN127
Paper jam -
SN
Paper End Sensor
CN129
Load paper -
SN
Bypass Paper
End Sensor
CN130
(None)
The machine cannot detect
paper on the bypass tray.
SN
Paper Path
Sensor
CN128
Paper jam -
SN
Exit Sensor
CN128
Paper jam -
SN
Image Density
(ID) Sensor
CN132
(None)
Print quality may become
worse.
SN
Toner Density
(TD) Sensor
CN123 SC901
The connector is shared with
the mechanical total counter.
PCU Reset PCU correctly -
Scanner HP
Sensor
CN126 SC120 -
SN SC120 -
Platen Cover
Sensor
CN126 SC120 -
SN (None)
The copier does not warm up
when you open the platen
cover.
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