Olivetti d-Color MF4003 Service Manual page 548

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