10-13
Troubleshooting > Troubleshooting
Part of the image is 
periodically faint or shows 
white lines. 
― Press the [
System Menu/Counter
] key, 
[Adjust/Maint.], [Service Setting], [MC] 
and decrease the adjustment value. 
Decrease the adjustment value 1 level 
at a time from the current value. If there 
is no improvement after the value is 
decreased by 1 level, decrease by 1 
level again. If there is still no 
improvement, return the setting to the 
original value.
―
― Press the [
System Menu/Counter
] key, 
[Adjust/Maint.], [Service Setting], [Drum 
Refresh], and then press [Yes].
―
Irregular horizontal lines 
appear in the image. 
― Press the [
System Menu/Counter
] key, 
[Adjust/Maint.], [Service Setting], [MC] 
and decrease the adjustment value. 
Decrease the adjustment value 1 level 
at a time from the current value. If there 
is no improvement after the value is 
decreased by 1 level, decrease by 1 
level again. If there is still no 
improvement, return the setting to the 
original value.
―
The altitude is 1500 m or 
higher and irregular 
horizontal white lines appear 
in the image. 
― Press the [
System Menu/Counter
] key, 
[Adjust/Maint.], [Service Setting], 
[Altitude Adj.] and then select [High 1]. If 
there is still no improvement, change the 
value to [High 2].
―
The altitude is 1500 m or 
higher and dots appear in 
the image. 
― Press the [
System Menu/Counter
] key, 
[Adjust/Maint.], [Service Setting], 
[Altitude Adj.] and then select [High 1]. If 
there is still no improvement, change the 
value to [High 2].
―
Print on the back of the 
sheet is visible on the front. 
― Set [Prevent Bleed-through] to [On]. page 6-13
page 8-28
Symptom Checkpoints Corrective Actions
Reference 
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