d-Color MF4003/MF3303
L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
L-150
[1]
[2]
[1]
Brush effect
[2]
Image bleeding
Troubleshooting procedure
Step
Section
Check item
Result
Action
1
Paper Setting
The paper to be used for printing does not match the
paper type and size of paper setting selected on the
machine.
YES
Make the paper setting again on
the machine.
2
Damp paper
Paper is damp.
YES
Change paper to one just
unwrapped from its package.
3
Service Mode ->
Stabilizer
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Stabilization Only] and the image
trouble is eliminated.
NO
Go to the next step.
4
Service Mode ->
Gradation Adjust
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Gradation Adjust] and the image trouble is eliminated.
NO
Go to the next step.
5
Image check
• 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.
YES
Go to the next step.
6
Transfer belt unit
Dirt, scratches, or foreign matter on the transfer belt.
YES
• Clean.
•
Replace the transfer belt unit.
7
2nd transfer section
Dirt or foreign matter on the 2nd transfer roller.
YES
• Remove the foreign matter.
•
Replace the transfer roller
unit.
8
Service Mode -> Fusing
Temperature
Select [Service Mode] -> [Machine] -> [Fusing
Temperature] and make the necessary adjustment, and
the image trouble is eliminated.
* Increase or decrease the setting value
NO
Return the setting value to the
original one and go to the next
step.
9
Service Mode -> Fusing
Transport Speed
Select [Service Mode] -> [Machine] -> [Fusing Transport
Speed] and make the necessary adjustment, and the
image trouble is eliminated.
* Brush effect: Increase or decrease the setting value *
Image bleeding: Decrease the setting value
NO
Return the setting value to the
original one and go to the next
step.
10
Fusing unit
There is dirty or foreign matter on paper path of fusing
unit.
YES
Clean. (Disassembling the fusing
unit is prohibited.)
11
Fusing unit
Scratches on roller, pad, and belt in fusing unit.
YES
NO
Replace the power supply of
fusing.
16.3.20 Blurred fine lines
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
Initial troubleshooting procedure
Step
Section
Check item
Result
Action
1
Damp paper
Paper is damp.
YES
Change paper to one just
unwrapped from its package.
Service Manual
Y119930-3
Summary of Contents for d-Color MF 4003
Page 1: ...Multifunction Digital Copier d Color MF4003 MF3303 Service Manual Version 2 0 Code Y119930 3 ...
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