Epson Stylus Pro 4910 Service Manual page 91

Epson Stylus Pro 4900/Epson Stylus Pro 4910
Symptom
Roll paper jam
Bottom part of the plain paper are bent or
rippled
Color measurement failure
Color measurement result cannot be saved
TROUBLE SHOOTING
Table 2-7. Problems on SpectroProofer
Cause
A foreign material in the roll paper path
Obstacle in the paper path for color
measurement (The paper is fed in a
straight path when color is measured.).
Poor quality printings
Paper set position is not proper (color
measurement fails when the paper is set
too far to the HOME/FULL side, since
the pattern overlaps the paper pressing
plate frame)
Improper paper settings
Improper Backing
White calibration tile is not recognized.
SpectroProofer lens is dirty.
SpectroProofer lamp burned out.
Error in CR HP Sensor
Not enough storage capacity in HDD
for saving the color measurement
results
Improper file attribute
Connection cable not supported
Problems on SpectroProofer
Check Item
Is the paper eject support of the Stacker raised?
Any foreign object/paper in the paper path?
Any obstacles on the Stacker?
Check if any obstacles exist in the back of the printer.
Check if the printings has no quality problems such as dot
missing or color unevenness.
Check if the paper is set in proper position.
Check if the paper setting matches the paper set.
Check if a black Backing is not used when measuring a
clear film.
Check if the white calibration tile is attached.
Check if the white calibration tile is not dirty.
Check if the SpectroProofer lens has dust or dirt on.
Check if the SpectroProofer lamp burned out
Check if the CR HP Sensor is attached properly.
Carry out "Sensor Check" of the service program to
check if the CR HP Sensor is working properly
P.401).
Check if there is enough capacity in HDD for saving the
color measurement results
Check if the file attribute is set to "Writable" when
overwriting the file.
Check if a USB2.0 supported cable is used.
Remedy
Raise the paper eject support.
Take away the foreign objects
Take away the paper or obstacles from the
Stacker.
Remove the obstacle.
Adjust the printer if there are any print quality
problem (Refer to Remedies for Print Quality
Troubles (P.76)
Re-set the paper.
Re-do the settings.
Use a white Backing when measuring a clear film.
Attach white calibration tile properly.
Clean the white calibration tile
Blow away the dust and dirt with air.
Replace the lamp.
Attach CR HP Sensor properly.
(See Replace the sensor if it is not working properly.
Increase the disk space.
Set the file attribute is set to "Writable" when
overwriting the file.
Replace the cable.
Revision A
(See P.418).
92
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