Samsung ML-3471ND/XAX Service Manual page 129

4.2.5.5 Signs and Measures at Poor toner cartridge
Fault
Light image and • The printed image
partially blank is light or unclean
image and untidy.
(The life is ended.)
• Some part of the
image is not printed.
Digital Printer
Digital Printer
• Periodically a noise
Digital Printer
as "tick tick" occurs.
Digital Printer
Digital Printer
Toner • Toner is fallen on
Contamination the papers
periodically.
• Contaminated with
toner on prints
partly or over the
whole surface.
Samsung Electronics
Signs Cause & Check
1. If the image is light or unclean
and untidy printed image -
Shake the toner cartridge and
then recheck.
(1)NG: Check the weight of the
toner cartridge
(2)OK: Lack of toner, so the life
is nearly closed.
2. Some part of image is not
printed - Shake the toner
cartridge and then recheck.
(1)NG: Check the weight of the
toner cartridge and
clean the LSU window
with a cotton swab,
then recheck.
(2)OK: Lack of toner, so the life
is nearly closed.
3. Periodically a noise as "tick
tick" occurs - Measure the
cycle and the weight of the
toner cartridge.
4. White vertical stripes on the
whole screen or partly :
Check the weight of the toner
cartridge.
1. Toner is fallen on the paper
periodically.
(1)Check the cycle of the falling
of the toner.
(2)Check the appearance of
both ends of the toner
cartridge OPC drum.
2.The center of the printed
matter is contaminated with
toner.
(1)Check whether foreign
substances or toner are
stuck to the terminal (contact
point) of the toner cartridge.
(2)Check whether the state of
the terminal assembly is
normal.
Adjustment and Troubleshooting
Solution
1. All of 1, 2, 3 above-
If it become better by shaking,
replace with a new toner
cartridge after 50-100 sheets in
the closing state of the life span.
2. In case of 2-
If it becomes better after
cleaning the LSU window, then
the toner cartridge 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
toner cartridge has been nearly
exhausted.( Purchase and
replace with a new toner
cartridge 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 toner cartridge.
1. If both ends of the OPC drum
are contaminated with toner:
Check the life of the toner
cartridge.
2. Check whether it could be
recycled.
3. If it cannot be recycled:
Replace the toner cartridge.
Service Manual
4-61