Samsung ML 1710 - B/W Laser Printer Service Manual page 83

T RO U B L E S H O OT I N G
7.4.4 Signs and Measures at Poor toner cartridge
Fault
Light image and • The printed image
partially blank
image
(The life is ended.)
• Some part of the
Digital Printer
Digital Printer
Digital Printer
• Periodically a noise
Digital Printer
Digital Printer
Toner • Toner is fallen on
Contamination
• Contaminated with
Service Manual
7-18
Signs
1. If the image is light or unclean
is light or unclean and untidy printed image -
and untidy. Shake the developer and
then recheck.
(1)NG : Check the weight of
image is not print-
ed. (2)OK : Lack of toner, so the
2. Some part of image is not
as "tick tick" occurs. printed - Shake the develop-
er and then recheck.
(1)NG : Check the weight of
(2)OK : Lack of toner, so the
3. Periodically a noise as "tick
tick" occurs - Measure the
cycle and the weight of the
developer.
4. White vertical stripes on the
whole screen or partly :
Check the weight of the
developer.
1. Toner is fallen on the paper
the papers periodi- periodically.
cally. (1)Check the cycle of the
falling of the toner.
(2)Check the appearance of
toner on prints part- both ends of the developer
ly or over the whole OPC drum.
surface.
2.The center of the printed mat-
ter is contaminated with toner.
(1)Check whether foreign sub-
stances or toner are stuck
to the terminal (contact
point) of the developer.
(2)Check whether the state of
the terminal assembly is
normal.
Cause & Check
the developer
life is nearly closed.
the developer and
clean the LSU window
with a cotton swab,
then recheck.
life is nearly closed.
Solution
1. All of 1, 2, 3 above-
If it become better by shaking,
replace with a new developer
after 35.3-100 sheets in the
closing state of the life span.
2. In case of 2-
If it becomes better after clean-
ing the LSU window, then the
developer is normal.
(Because of foreign substance
on the LSU window, the image
has not been printed partly.)
3. In case of 3-
If the cycle of noise is about 2
seconds, the toner inside the
developer has been nearly
exhausted.( Purchase and
replace with a new developer
after using about 200 sheets at
the point of occurrence)
4. In case of 3-
This is a phenomenon caused
by lack of toner, so replace with
a new developer.
1. If both ends of the OPC drum
are contaminated with toner:
Check the life of the developer.
2. Check whether it could be recy-
cled.
3. If it cannot be recycled:
Replace the developer.
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