Upper Paper End
220-8
(IOB)
Open
The Paper End indicator lights even if paper is
placed in the upper paper tray.
Shorted
The Paper End indicator does not light even if there
is no paper in the upper paper tray.
Lower Paper End
214-8
(IOB)
Open
The Paper End indicator lights even if paper is
placed in the lower paper tray.
Shorted
The Paper End indicator does not light even if there
is no paper in the lower paper tray.
Upper Relay
220-5
(IOB)
Open
The Paper Jam indicator lights whenever a print is
made.
Shorted
The Paper Jam indicator lights even if there is no
paper.
Lower Relay
214-5
(IOB)
Open
The Paper Jam indicator lights whenever a print is
made.
Shorted
The Paper Jam indicator lights even if there is no
paper.
Transfer Belt Position
202-
A10
(IOB)
Open No symptom
Shorted SC403 is displayed
Switches
Component CN Condition Symptom
Right Lower Cover
216-4
(IOB)
Open
“Doors/Covers Open” is displayed even if the
right lower cover is closed.
Shorted LCD goes blank when the lower cover is opened.
Main
102-1~4
(PSU)
107-1
Open The machine does not turn on.
Shorted The machine does not turn off.
Front Cover Safety
107-1
(PSU)
Open
“Doors/Covers Open” is displayed even if the
front cover is closed.
Electrical Component Defects
177
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