No.
Sensor Name/
Sensor Board Name
Active
CN No./
Pin No.
Condition Symptom
8 Front Door Sensor L CN104/1
Open "Cover Open" is
displayed.
Shorted Front cover open cannot
be detected.
9
Waste Toner Bottle
Full Sensor
H CN118/19
Open Waste Toner near full is
indicated.
Shorted Waste toner full cannot
be detected.
10
Waste Toner Bottle
Set Sensor
L CN118/16
Open "Check the Left Cover is
closed and the Waste
Toner Bottle is set
correctly" is displayed.
Shorted • Left cover open
cannot be detected.
• Waste toner bottle
set cannot be
detected.
11
Temperature/
Humidity Sensor
A CN127/1, 3
Open • Printed image is
wrong, such as
rough image, dirty
background or
weak image.
• SC498
Shorted
12 Paper Size Sensor A
CN116/
A11, A12,
A13
Open
Paper size error
Shorted
13 Tray1 Set Sensor L CN116/A15
Open Tray 1 is not detected.
Shorted Tray 1 is detected.
Electrical Component Defects
629
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