Oki B6250n Reference Manual page 118

SYMPTOM
Dirt appears at
equal intervals.
White dots
appear in black
filled areas.
Printed image
smudges when
rubbed with your
finger.
The toner is not
fixed on the
paper.
Paper is
smeared with
toner.
The whole piece
of paper is
printed black.
REASON/ACTION
The feed route of the paper is stained. Print a few pages to
remove the stains.
The drum/toner cartridge is defective or damaged. Replace
with a new drum/toner cartridge.
" Replacing the Drum/Toner Cartridge" (P. 140)
The paper used is not suitable. Load the correct type of paper.
" Usable Paper" (P. 45)
The drum/toner cartridge is defective or damaged. Replace
with a new drum/toner cartridge.
" Replacing the Drum/Toner Cartridge" (P. 140)
The paper loaded in the paper tray does not match the paper
type set on the control panel. Set the appropriate paper type
of the paper loaded in the paper tray on the control panel.
" Usable Paper" (P. 45)
" Setting Paper Types" (P. 54)
The paper is damp. Replace with paper from a new ream.
" Loading Paper" (P. 49)
The paper used is not suitable. Load the correct type of paper.
" Usable Paper" (P. 45)
The drum/toner cartridge is defective or damaged. Replace
with a new drum/toner cartridge.
" Replacing the Drum/Toner Cartridge" (P. 140)
This may be due to breakdown of high voltage power. Contact
service.
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