Electrical Component Defects
SM 6-3 D096
Trouble-
Shooting
Component CN Condition Symptom
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.
102-2
(BICU)
Open
SC120 shows.
Shorted
Platen Cover
102-5
(BICU)
Open
Auto Reduce/Enlarge do not function
correctly.
Shorted
If the Start button is pressed with the
platen cover or A(R) DF closed, “Cannot
detect original size” is displayed.
SC392 is activated when the CPU detects an ID sensor error during developer
initialization (SP 2214). However, SC392 is not displayed on the LCD but simply
logged in the SC log (SMC printout), unless the technician exits SP Mode as soon
as an error message is displayed.
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