10-16
Troubleshooting > Troubleshooting
Black points appear in white 
background parts of the 
image. 
Is the original holder or the glass platen 
dirty?
Clean the original holder or the glass
platen.
page 10-2
― Select the [System Menu/Counter] key 
> [Adjust/Maint.] > [Service Setting] > 
[Drum Refresh], and then select [Yes].
―
― Select the [System Menu/Counter] key 
> [Adjust/Maint.] > [Service Setting] > 
[MC] and increase the adjustment value. 
Increase the adjustment value 1 level at 
a time from the current value. If there is 
no improvement after the value is 
increased by 1 level, increase by 1 level 
again. If there is still no improvement, 
return the setting to the original value.
―
Printed images are fuzzy.  Is the machine being used in conditions 
of very humid, or humidity or 
temperature rapidly changes?
Use in an environment that has suitable 
humidity.
―
― Select the [System Menu/Counter] key 
> [Adjust/Maint.] > [Service Setting] > 
[Drum Refresh], and then select [Yes].
―
Printed images are skewed.  Are the originals placed correctly?
When placing originals on the platen, align 
them with the original size indicator plates.
page 5-2
When placing originals in the document 
processor, align the original width guides 
securely before placing the originals.
page 5-3
Is the paper loaded correctly? Check the position of the paper width 
guides.
page 3-2
Irregular horizontal lines 
appear in the image. 
― Select the [System Menu/Counter] key 
> [Adjustment/Maintenance] > 
[Service Setting] > [MC] and increase 
the adjustment value. Increase the 
adjustment value 1 level at a time from 
the current value. If there is no 
improvement after the value is 
increased by 1 level, increase by 1 level 
again. If there is still no improvement, 
return the setting to the original value.
―
The altitude is 1000 m or 
higher and irregular 
horizontal white lines appear 
in the image. 
― Select the [System Menu/Counter] key 
> [Adjustment/Maintenance] > 
[Service Setting] > [Altitude 
Adjustment], and set to an elevation 
one level higher than the current setting.
―
Symptom Checkpoints Corrective Actions
Reference 
Page