Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A
TROUBLE SHOOTING Remedies for Print Quality Troubles 81
Confidential
The backside of paper is contaminated by
ink smear.
The platen is contaminated.
Check if the ink is attached on the platen.
Check if the setting of the “Paper Size Check” is “On”.
Clean the platen if it is contaminated. (See
P.416)
Set the “Paper Size Check” to On from the
control panel.
The waste ink pads for borderless
printing are not securely attached and
contaminating paper.
Check if the waste ink pads for borderless printing is
attached correctly.
Securely attach the ink pads. Replace the ink pads
if badly dirty.
Suction Fan is making the ink mists
drift to the back of the printing paper.
Check if the suction level of the fan is proper.
Lower the “Paper Suction” from the control panel.
If it does not help, carry out Suction Check &
Adjustment (See P.383).
Uneven color is shown within the parts/
across the pages of the printed paper.
Ink quality is declining.
Check if the ink is within its expiration date.
Is it within the date on the box?
Is it within six months from the opening of the package?
Replace the expired ink.
The ink in the ink cartridge is not
agitated enough.
Check if the ink cartridge has shaken enough before it is
installed.
Take out the ink cartridge. Shake it well
horizontally in its long-side-direction.
The PG height is not proper.
If the color is uneven within a paper’s left and right side,
check the PG adjustment value (See P.321).
Check if it is within the specified range.
Carry out PG Height Check to set it within the
specified range (See P.321).
The printed color differs from the user
expectation.
The “Color Correction” setting is not
proper.
Check the “Color Correction” status from the basic setting
screen of the printer driver.
Check if the Color Correction setting reflects the
expectation.
Adjust to reflect the user expectation.
The color management setting is not
proper.
Check if the color management setting matches the
application software and the OS used.
Refer to “Color Management Printing” in the
User’s Guide, and make proper settings.
The color is uneven between several
printers.
Colorimetric Calibration Adjustment
has not been carried out.
If the Printhead, Main Board, Power Supply Board of the
printer with trouble has been replaced before, check if the
Colorimetric Calibration Adjustment has been carried out.
If the Colorimetric Calibration Adjustment has not
been carried out, check that the Head ID is
correctly input (See P.332), and carry out the
adjustment (See P.342).
Blurred print
Too much ink discharge.
Check if the Head ID is input correctly.
Check if “Colorimetric Calibration Adjustment” is
carried out after replacing the Printhead, Main Board
and Power Supply Board.
Check the Head ID and input the correct one if
necessary. (See P.332)
Carry out “Colorimetric Calibration
Adjustment”. (See P.342)
The ink dot sizes are not proper.
If using RIP, check if the same symptom occurs when
printing through the printer driver.
Does the same thing goes with the printing through
the printer driver?
Yes: Media is most likely the cause.
No: RIP setting is the cause.
Table 2-3. Print Quality Troubles
Symptom Cause Check Item Remedy
To Next Page
Loading...
Need help?
General