Toshiba e-Studio3511 Service Handbook page 426

Moire
Cause/Section
Density reproduction
Parameter
adjustment value
Printer section
Lack of sharpness
Cause/Section
Density reproduction
Parameter
adjustment value
* If the trouble is not solved at the step 1 and the step 2 or followings (excluding the parameter adjustment) are
performed, make sure to perform "Enforced performing of image quality closed-loop control" and then "Automatic
gamma adjustment" after taking a measure.
e-STUDIO3511/4511 TROUBLESHOOTING
Step Check items
1 Check the gradation
reproduction.
2 Check the image
processing parameters.
3 Adjust the image
processing parameters.
4 Check the printer output
image.
Step Check items
1 Check the gradation
reproduction.
2 Check the image
processing parameters.
3 Adjust the image process-
ing parameters.
Measures
Perform the forced performing
of image quality closed-loop
control (05-395) and then
automatic gamma adjustment.
Check the sharpness adjust-
ment value.
While checking the above
encircled images A and B,
decrease moire by sharpness
adjustment.
Output the test patterns and
check them.
Color: using 04-231 for each
color
Black: using 04-113
Measures
Perform the forced performing
of image quality closed-loop
control (05-395) and then
automatic gamma adjustment.
Check the sharpness adjust-
ment value.
While checking the above
encircled image A, increase
sharpness by sharpness
adjustment.
5 - 112
Remarks
When defects occur,
perform the
corresponding
troubleshooting
procedures.
Remarks
November 2003 © TOSHIBA TEC