KPOWERSCIENCE KP3828 Series, Руководство по обслуживанию

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8-48
8.Printing quality (continued)
Re
m
arks
A special ad
justm
ent jig will be
necessary
.
Re
m
edy
Adjust the p
osition of
th
e LED
bracket. A.
Clean the co
rona wire with
wire cleaner
.
B.
Clean at every 50,000 (8.5”) pages.
Clean the su
rface of the LED
array lens w
ith special cloth.
Pull out the developing unit and rem
ove the lum
p of toner or
debris with a scraper
.
T
ighten the setscrew so that it is
not loosened.
Cause
The LED bracket is shifted. Toner or debris is attached to the corona wire of the transf
er
char
ger section.
Toner or debris is attached to the surface of th
e LED array
lens.
A lum
p of t
oner or debris clogs
the doctor blade of the developing unit. Abnor
m
al rotation of the inner
pole m
agnet of the developing
roller (abnorm
al rotation due to
loosening of
the ratchet of
developing unit).
Phenom
enon
11.
The print is out of focus and
unclear
.
12.
Poor transfer (low printing
density) occurs at parts in the paper transport direction.
13.
The print is skipped
repeatedly along the paper transpo
rt d
ir
ection of
the
printed surface.
14.
The print is skipped
repea
tedly a
cross a na
rro
w
width along the paper transpo
rt d
ir
ection of
the
printed surface.
15.
The print density is uneven
along the paper width direction of the printed surface.
-To be continued-
Poor transfer
.
Fig. 8-1
1