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7-72 Troubleshooting
Table 7-31. Vertical Dots
Possible Cause Action
Contaminated Static
Eliminator teeth.
Clean the Static Eliminator.
Poor contact between
the Static Eliminator
and the Engine
Controller Board.
Clean the contacts, if contaminated. If the problem
remains after cleaning, or parts are damaged or
deformed, replace them.
Deformed or
deteriorated Transfer
Roller.
Replace the Transfer Roller.
Defective Engine
Controller Board.
Replace the Engine Controller Board.
Table 7-32. Vertical White Lines
Possible Cause Action
Lack of Toner or
faulty Toner Cartridge.
Redistribute the Toner in the Toner Cartridge. If the
problem continues, replace the Toner Cartridge.
Contamination in the
Laser Path.
Clean the Laser Path. (Remove the Laser Scanner
Assembly and clean the lens.)
Defective Fuser. Replace the Fuser Assembly.
Dirty mirror in the
Laser Scanner.
Replace the Laser Scanner.