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bizhub C4000i/C3300i
Initial troubleshooting procedure
Step
Section
1
Damp paper
2
Paper Setting
3
Service Mode ->
Stabilizer
4
Service Mode ->
Gradation Adjust
5
Image check
Engine troubleshooting procedure
Step
Section
1
Write section
2
Charging section
3
Photoconductor section
12.3.14 Back marking
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
Troubleshooting procedure
Step
Section
1
Paper Setting
2
Paper path
3
2nd transfer section
4
Fusing unit
5
Fusing unit
12.3.15 Blank copy, Black copy
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
Check item
Paper is damp.
The paper to be used for printing does not match the
paper type and size of paper setting selected on the
machine.
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Stabilization Only] and the image
trouble is eliminated.
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Gradation Adjust] and the image trouble is eliminated.
• Select [Service Mode] -> [Test Mode] -> [Lattice
Pattern]. Select "SINGLE", "HYPER", "Error
diffusion", "1-Sided", "CMYK", "600dpi", and
"Normal", enter "10" for CD width, "10" for FD width,
and "255" for Density, and load tray 2 with A4
paper. Press the start key. This runs a print cycle
for C, M, Y, and K in that order.
• Check the image after printing and the abnormal
image is evident.
Check item
Dirt or foreign matter on the dust-proof glass of the PH of
the color which is responsible for the abnormal image.
Foreign matter on charging roller of the color which is
responsible for the abnormal image.
Dirt or foreign matter on the photoconductor of the PH of
the color which is responsible for the abnormal image.
Check item
The paper to be used for printing does not match the
paper type and size of paper setting selected on the
machine.
There is dirty or foreign matter on paper path.
Dirt or foreign matter on the 2nd transfer roller.
There is dirty or foreign matter on paper path of fusing
unit.
Scratches on belt and roller in fusing unit.
L-101
L TROUBLESHOOTING > 12. IMAGE QUALITY PROBLEM
Result
YES
Change paper to one just
unwrapped from its package.
YES
Make the paper setting again on
the machine.
NO
Go to the next step.
NO
Go to the next step.
YES
Go to engine troubleshooting
procedure.
Result
YES
Clean the PH window.
YES
Lightly wipe the surface clean of
foreign matter using hydro-wipe
(65AA-99##).
Note: Do not apply a strong force
to the surface of the charging
roller, as doing so can damage the
surface.
YES
• Clean.
•
NO
Replace the PH unit.
Result
YES
Make the paper setting again on
the machine.
YES
Check and clean the paper path
including the duplex section.
YES
• Remove the foreign matter.
•
YES
Clean. (Disassembling the fusing
unit is prohibited.)
YES
Replace the fusing unit.
NO
Replace the high voltage unit.
Action
Action
Replace the imaging unit.
Action
Replace the transfer roller
unit.
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