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Solution:
1.
To identify the affected color, print three full-page, halftone A3 or DLT sheets
for each of cyan, magenta, yellow, and black.
2.
Detach the charge roller of the affected color, wipe its surface with a well-
wrung-out damp cloth, wipe it with a dry cloth until no moisture remains, and
then reattach the roller.
Note:
Do not use ethanol or any other organic solvent to clean the charge roller.
Otherwise it may cause damage to the charge roller.
CEZ522
3.
If the problem persists, contact your service representative.