Lexmark E330 Service Manual - Page 100

White or black lines or bands, Toner on back - fuser gear

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4505 White or black lines or bands FRU Print cartridge assembly (not a FRU) Developer drive coupling assembly Toner on back of page Action Banding appears as light or dark horizontal lines on a uniformly gray page or on a page with a large area of graphics. Banding is primarily due to a variation in the speed of the paper as it feeds through the printer especially in the developer and transfer process. Inspect the toner cartridge and paper feed components, especially the drive coupler and drive gears for debris, binds or damage. FRU PC Kit (not a FRU) Fuser Transfer roll Action Inspect the overall paper path for signs of spilled toner. Gently clean the contaminated areas with a soft cloth or compressed air. The fuser hot roll can cause toner deposits on the back of the paper if toner is building up on the hot roll. This buildup may transfer to the backup roll, later transferring to the back of the paper. Inspect the hot roll and backup roller for signs of contamination. Replace the fuser as necessary. A transfer roll contaminated with toner can cause toner to transfer to the back of printed pages. Inspect the transfer roll for contamination and replace as necessary. 2-72 Service Manual

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2-72
Service Manual
4505
White or black lines or bands
Toner on back of page
FRU
Action
Print cartridge assembly (not a
FRU)
Developer drive coupling
assembly
Banding appears as light or dark
horizontal lines on a uniformly gray
page or on a page with a large area
of graphics. Banding is primarily due
to a variation in the speed of the
paper as it feeds through the printer
especially in the developer and
transfer process.
Inspect the toner cartridge and
paper feed components, especially
the drive coupler and drive gears for
debris, binds or damage.
FRU
Action
PC Kit (not a FRU)
Inspect the overall paper path for
signs of spilled toner.
Gently clean the contaminated areas
with a soft cloth or compressed air.
Fuser
The fuser hot roll can cause toner
deposits on the back of the paper if
toner is building up on the hot roll.
This buildup may transfer to the
backup roll, later transferring to the
back of the paper.
Inspect the hot roll and backup roller
for signs of contamination.
Replace the fuser as necessary.
Transfer roll
A transfer roll contaminated with
toner can cause toner to transfer to
the back of printed pages.
Inspect the transfer roll for
contamination and replace as
necessary.