Electrical Component Defects
D017/D018/D019/D020 4-56 SM
light whenever a copy is
made.
Shorted
The Paper Jam indicator
lights even if there is no
paper.
Open
The paper overflow
message is not displayed
when the paper overfull
condition exist.
Paper Overflow
Sensor
324-4 BCU
Shorted
The paper overflow
message is displayed.
Open
The paper overflow
message is not displayed
when the paper overfull
condition exist.
Paper Overflow
Sensor
703-1 CKB
Shorted
The paper overflow
message is displayed.
Open
LED does not light even if
paper is in 1-bin tray.
Paper Present Sensor 330-1 BCU
Shorted
LED lights even if paper is
not in 1-bin tray.
Open
Paper Size Sensor
(Bypass)
860-6 BCU
Shorted
The CPU cannot detect the
proper paper size, and
misfeeds may occur when a
copy is made.
Open
Paper Size Sensor
(Duplex)
860-6 BCU
Shorted
The CPU cannot detect the
proper paper size, and
misfeeds may occur when a
copy is made.
Registration Sensor 321-5 BCU
Open The Paper Jam indicator will
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