A SERVICE OF

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2-122 Service Manual
5021-0XX
White line I service check
Vertical white line appears in a specific color area when print quality
test print is run.
Problem area Action
1 Test print Run print quality test prints. See
Print quality test pages on
page 3-5. White line appears on
specific color.
2 Toner cartridge Developer roller of specifc toner
cartridge is dirty. Remove foreign
particle adhering to specific toner
cartridge developer roller.
Developer roller surface is
damaged. Replace problem toner
cartridge.