PRINTING QUALITY PROBLEMS
SM 4-23 B273
Trouble-
shooting
4.5.7 UNEVEN DENSITY
Description: Print density is uneven between the left and right
sides of the output print.
Cause Solution
1. Pressure force on the left and right
springs of the transfer roller is not even,
springs are damaged, transfer roller is not
correctly installed, or transfer roller
bushings or holders are damaged.
2. Toner cartridge has reached end of life.
3. Toner inside the cartridge is not level due
to damaged blade or low toner.
1. Replace both the left and right bushings
and spring assemblies.
2. Replace the toner cartridge.
3. Gently shake the toner cartridge side to
side 5-6 times and attempt to print
again. Replace the toner cartridge if the
problem persists.
4.5.8 BACKGROUND
Description: Light background is visible throughout the output
print.
Cause Solution
1. The machine has not printed large
quantities of low coverage pages, or the
machine has not been used for an
extended period.
2. A recycled toner cartridge is being used.
3. The toner cartridge has reached end of
life.
4. The up/down movement of the transfer
roller is not smooth.
5. HVPS is not performing within
specification.
1. The toner cartridge is designed to print
3,000 sheets with 5% coverage.
Background can appear if the machine
prints more than 3,600 pages with only
2% coverage.
2. Machine operation is not guaranteed with
use of recycled toner cartridges. Gently
shake the toner cartridge side to side 5-6
times and attempt to print again. Replace
the toner cartridge if the problem persists.
3. Replace the toner cartridge.
4. Clean the transfer roller bushings.
5. Clean the high-voltage charge terminals.
Replace the HVPS if the problem
persists.
B273T920.WMF
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
B273T921.WMF
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