Component CN PCB State
2nd Paper End Sensor
(S9)
308-
B10
BCU
Open
The Paper End indicator does not light
even if there is no paper in the 2nd
paper tray.
Shorted
The Paper End indicator lights even if
paper is placed in the 2nd paper tray.
2nd Vertical Transport
Sensor (S10)
308-
B13
BCU
Open Jam A (Jam 12)
Shorted Jam A (Jam 1)
2nd Paper Feed Sensor
(S11)
308-
B17
BCU
Open
Jam A (Jam 4)
Shorted
1st Paper Overflow
Sensor (S12)
308-
A13
BCU
Open
Paper overflow sensor detects the top
of the paper loaded in the 1st paper
tray, even if no paper is placed in the
1st paper tray
Shorted
Paper overflow sensor does not detect
the top of the paper loaded in the 1st
paper tray, even if paper is placed in
the 1st paper tray
1st Paper End Sensor
(S13)
308-
A10
BCU
Open
The Paper End indicator does not light
even if there is no paper in the 1st
paper tray.
Shorted
The Paper End indicator lights even if
paper is placed in the 1st paper tray.
1st Vertical Transport
Sensor (S14)
308-
A17
BCU
Open Jam A (Jam 11)
Shorted Jam A (Jam 1)
1st Paper Feed Sensor
(S15)
308-A4 BCU
Open
Jam A (Jam 3)
Shorted
Duplex Unit Entrance
Sensor (S16)
314-8 BCU
Open Jam Z (Jam 27)
Shorted Jam Z (Jam 1)
Electrical Component Defects
345