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e-STUDIO2555C/3055C/3555C/4555C/5055C
ERROR CODE AND TROUBLESHOOTING
8 - 283
8.5.4
Background fogging 1
Fig.8-8
Cause/Section
Step
Check item
Measures
Remark
s
Density
reproduction
1
Check the gradation
reproduction.
Perform the forced performing of
image quality closed-loop control
(05-2742) and then automatic
gamma adjustment.
Printer section
2
Check the printer output
image.
Output the test patterns and
check them.
Using 04-36 for each color
See
step 6 if
defects
occur.
Scanner
3
Check if the original glass,
mirrors or lens is dirty.
Clean it.
Parameter
adjustment
value
4
Check the image processing
parameters.
Check the value of offsetting
adjustment for background
adjustment.
5
Adjust the image processing
parameters.
While checking the above
encircled image, adjust the
reproduction level by the
offsetting adjustment for
background adjustment.
Cover
6
Is the cover installed properly?
(Is the drum exposed to the
external light?)
Correct it.
Auto-toner
7
Is the auto-toner sensor
normal?
Check the operation of auto-
toner sensor and readjust.
8
Is the toner supply operating
constantly?
Check the motor and circuits.
Summary of Contents for e-studio 2555c
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