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(1)
Set the values of "Image quality closed-loop control / Contrast voltage (08-556)" and "Image
quality closed-loop control / Laser power (08-557)" to "0" (Invalid).
(2)
Perform "Enforced performing of image quality open-loop control (05-394)".
(3)
Output the image quality control test pattern (04-270) more than one time and the list print
([9][START]) in the adjustment mode (05), and then check if the image is normal.
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Normal
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(4)
Replace the image quality sensor or the LGC board.
(5)
Set the values of "Image quality closed-loop control / Contrast voltage (08-556)" and "Image
quality closed-loop control / Laser power (08-557)" to "1" (Valid).
(6)
Perform "Automatic initialization of image quality control (05-396)" and make sure it is
completed normally. (Error [CE10], [CE20] and [CE40] do not appear.) Then perform
"Automatic gamma adjustment" (Chapter 3.7.1 and 3.8.1).
Check and correct it accordingly.
(7)
Reset all of the values in the codes "Abnormality detection count (Y/M/C/K) Display/0 clearing
(08-573 to 08-576)".
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Abnormal
Abnormal image:
Blank print, Solid print, White banding, Color banding, White spots, Poor
transfer, Uneven image density, Faded image (low density), Uneven light
distribution, Blotched image.
* Blank print: including when one of the YMCK colors is not printed.
Correct the abnormal image.
Proceed to step (5).
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When an error occurs:
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e-STUDIO2020C/2330C/2820C/2830C/3520C/3530C/4520C
ERROR CODE AND TROUBLESHOOTING
6
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