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Symptom
2) Uneven density
appears in vertical
bands
3) Horizontal bands
Make a printer test (see page 5-30). Is the printout normal ?
Y
N
I
• Clean the charge and transfer corona wires.
• Clean the quenching lamp.
• If the problem is not solved, clean the laser optics.
• Clean the exposure glass and scanner optics.
• Change the fluorescent lamp if the bands appear on the sides of the copy.
Is there a clear contrast between the bands ?
Y
N
I
Clean the development roller bearings.
• Clean the transfer corona unit.
• Change the fluorescent lamp if it is flickering.
Action
9 - 16
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