Oki C330 User Manual
Page 129

129
– C330/C530
Troubleshooting
Horizontal 
Lines and 
spots appear 
periodically.
When the interval is 
about 4 inches (94 
mm), the image drum 
(the green tube) is 
damaged or dirty.
Wipe it lightly with a soft 
cloth. Replace the image 
drum cartridge when it is 
damaged (see page 84).
When the interval is 
about 1.2 in (30 mm), 
there may be foreign 
particles in the image 
drum cartridge.
Open/close the image drum 
cartridge see page 84), and 
print again.
When the interval is 
about 3.4 inches (86mm 
(86 mm), the fuser unit 
is damaged.
Replace the fuser unit (see 
page 99).
The image drum 
cartridge has been 
exposed to light.
Replace the image drum 
cartridge if the problem is not 
resolved (see page 84)).
White area of 
paper is 
lightly 
stained.
Paper contains static.
Use paper stored in proper 
temperature and humidity 
conditions.
Too thick paper is used.
Use thinner paper.
The toner is low.
Open the top cover and tap 
the cartridge a few times to 
evenly distribute any 
remaining toner. If symptoms 
persist, replace the toner 
cartridge ( see page 99).
Periphery of 
the letters is 
smudged.
The LED head is dirty.
Wipe the LED head with a 
soft, lint-free cloth (see 
page 103).
Toner comes 
off when it is 
rubbed.
The thickness and type 
of the paper are 
incorrectly set.
Set the correct value of 
media type and media weight 
in the Media menu or set one 
value lighter for media 
weight (see page 14).
Recycled paper is used.
Set one value thicker for 
media weight in the Media 
menu (see page 14).
Symptoms
Possible causes
Steps to take
