Electrical Component Defects
D158/D159/D160/D161/D170 5-102 SM
Component CN Condition Symptom
Exit
124-2
(BICU)
Open
The Paper Jam message will
appear whenever a copy is made
(paper has not reached the
sensor).
Shorted
The Paper Jam message
appears even if there is no paper
at the sensor.
Toner Density
125-3
(BICU)
Open
SC390 is displayed.
Shorted
Image Density
123-2
(BICU)
Open The toner density control process
is changed (see the note below
the table).
Shorted
Scanner H.P.
(D158/D159)
318-2
(SIO)
Open
SC120 shows.
Shorted
Scanner H.P.
(D160/D161/D170)
404-14
Open
SC120 shows.
Shorted
Platen Cover
(D158/D159)
318-5
(SIO)
Open
APS and Auto Reduce/Enlarge
do not function correctly.
Shorted
If the Start button is pressed with
the platen cover or ARDF closed,
“Cannot detect original size” is
displayed.
Rev. 11/07/2013
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