No.
Sensor Name/
Sensor Board Name
Active
CN No./
Pin No.
Condition Symptom
Short
Paper jam is detected
even if the there is no
paper.
18
By-pass Paper
Detection Sensor
L CN211/22
Open
Paper is not detected on
the by-pass tray
Shorted
Paper is detected even if
there is no paper on the
by-pass tray.
19
By-pass Paper Size
Sensor
L
CN211/17
CN211/16
CN211/20
CN211/19
Open
Paper size error
Shorted
20 Inverter Sensor L CN211/2
Open
Paper jam Z
Shorted
21 Fusing Exit Sensor L CN210/13
Open
Paper jam A
Shorted
22
Paper Overflow
Sensor
L CN210/10
Open
The paper overflow
message is not displayed
even when a paper
overflow condition exists,
causing paper jam.
Shorted
The paper overflow
message is displayed.
23 Paper Exit Sensor L CN210/7
Open
Paper Jam A
Shorted
24 ID Sensors A CN209
Open
SC400/418
Shorted
25 Fusing Thermistor A CN209/1
Open
SC541
Electrical Component Defects
133
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