e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
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ERROR CODE and TROUBLESHOOTING
8 - 312
8.5.12
White banding or white void (in feeding direction)
Fig.8-20
Cause/Section
Step
Check item
Measures
Scanner
1
Is there foreign matter or dust in the
optical path?
Clean the lens and mirrors.
Laser optical
unit, Main
charger grid
2
Perform the enforced performing of
image quality closed-loop control (05-
2742).
When the enforced performing of
image quality closed-loop control is
performed, the automatic cleaning of
main charger and the LSU slit glass
cleaning are performed at the same
time.
Laser optical
unit
3
Is there foreign matter or dust on the
slit glass?
Remove any dirt or foreign matters.
(The slit glass can be cleaned even
when the process unit is taken off.)
Developer unit
4
Is there foreign matter inside the
developer unit or on the developer
sleeve?
Check if there is a white streak in the
developer material on the developer
sleeve. Scrape off foreign matter
around the white streak using a jig.If
there is no white streak, put the sheet
of paper with a white banding to the
developer sleeve, and scrape off the
developer material around the white
band to see if there is foreign matter
in it. Scrape off foreign matter and
developer material on the developer
sleeve.
P. 7-26"7.6.7 Developer unit (K, Y,
Feeding direction