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Trouble code
Sub code
F2
31
32
33
35
37
EE
EU
EL
Content
Image density sensor trouble
Drum mark sensor trouble
Grid voltage correction trouble (Limit
over)
Grid voltage correction trouble
Drum mark sensor gain adjustment
trouble
Auto developer adjustment under
toner detection
Auto
developer
adjustment
toner detection
9 – 3
•
When the light emitting quantity of the image density
sensor is increased to the maximum level, the input value
does not reach 3.75V.
•
When the light emitting quantity of the image density
sensor is decreased to the minimum level, the input value
does not fall below 4.5V.
•
During execution of the grid voltage correction, the element
level is 3V or lower.
•
During one and a quarter rotations of the drum, the drum
mark is not sensed (the sensor input does not become
HIGH).
•
The drum mark sensor input level is not in the specified
range.
•
When obtaining the grid voltage correction value, the result
of the patch voltage is not in the range of 200 ∼ 650V.
•
When obtaining the grid voltage correction value, the patch
voltage is not in the range of 200 ∼ 650V.
•
The grid voltage correction cannot be performed properly.
(The correction value cannot be obtained.)
•
Though the drum mark sensor light emitting quantity is
increased to 1.45V, the sensor input level does not become
LOW.
•
After completion of the auto developer adjustment
(simulation 25-2), the toner density sensor input voltage is
over the specified range. (Under toner)
•
over
After completion of the auto developer adjustment
(simulation 25-2), the toner density sensor input voltage is
under the specified range. (Over toner)
Condition
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