Toshiba e-STUDIO5540C Service Manual page 300

8.5.6 Moire/lack of sharpness
Moire
Cause/Section Step
Density 1 Check the gradation
reproduction reproduction.
Parameter 2 Check the image processing
adjustment parameters.
value
3 Adjust the image processing
parameters.
Printer section 4 Check the printer output
image.
Lack of sharpness
Cause/Section Step
Density 1 Check the gradation
reproduction reproduction.
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A
Fig.8-13
Check item
Perform the forced
performing of image quality
closed-loop control (05-2742)
and then automatic gamma
adjustment.
Check the sharpness
adjustment 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
Check item
Perform the forced
performing of image quality
closed-loop control (05-2742)
and then automatic gamma
adjustment.
8 - 299
B
Measures
When defects
occur,
perform the
correspondin
g
troubleshootin
g procedures.
Measures
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
ERROR CODE and TROUBLESHOOTING
8
Remarks
Remarks