Brother HL-720 Printer User Manual


 
CHAPTER 6 TROUBLESHOOTING
6–13
English: HL-YL User’s Guide, Chapter 6
Question Recommendation
Toner scatters and stains the
printed page.
Fig. 6-10 Scattering Toner
If toner scatters over the whole printing surface,
adjust the print density dial inside the printer counter
clockwise. See “ADJUSTING THE PRINT
DENSITY” in Chapter 5.
Clean the printer interior. See “Cleaning the Printer
Interior and Drum Unit” in Chapter 5.
Make sure that you use paper that meets
specifications.
If you still have the same problem and the Drum
lamp is on, replace the drum unit with a new one.
The whole page is printed in
black.
Fig. 6-11 Black Page
Wipe the electric terminals referring to “Cleaning the
Printer Interior and Drum Unit” in Chapter 5. Never
use heat-sensitive paper as it will cause this problem.
If the same problem occurs and the Drum lamp is
still on after cleaning, replace the drum unit with a
new one.
Nothing is printed on the page.
Fig. 6-12 White Page
Make sure that the toner cartridge is not empty.
Wipe the electric terminals referring to “Cleaning
the Printer Interior and Drum Unit” in Chapter 5.
Make sure that a torn piece of paper does not
remain on the scanner window.
Printed pages are marked at
regular intervals.
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over me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come together rightA
now, over me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come togetherA
right now, over me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come AAA
together right now, over me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. A
Come together right now, over me. Here come Flat-top ,he come. One thing I can tell you is you go to beA
free. Come together right now, over me. Here come Flat-top ,he come. Lucy in the sky with Diamonde. AA
One thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-top ,heAA
come. One thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-top
,he come. One thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-
top ,he come. One thing I can tell you is you go to be free. Come together right now, over me. Lucy in the
sky with Diamonde. Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come AAA
together right now, over me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. A
Come together right now, over me. Here come Flat-top ,he come. One thing I can tell you is you go to be
free. Come together right now, over me. Here come Flat-top ,he come. One thing I can tell you is you goA
to be free. Come together right now, over me. Here come Flat-top ,he come. Lucy in the sky with AAAAA
Diamonde. One thing I can tell you is you go to be free. Come together right now, over me. Here come A
Flat-top ,he come. One thing I can tell you is you go to be free. Come together right now, over me. HereA
come Flat-top ,he come. One thing I can tell you is you go to be free. Come together right now, over me. A
Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come together right now, over
me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come together right now,
over me. Here come Flat-top ,he come. Lucy in the sky with Diamonde. One thing I can tell you is you go
to be free. Come together right now, over me. Here come Flat-top ,he come. One thing I can tell you is you
go to be free. Come together right now, over me. Here come Flat-top ,he come. One thing I can tell you is
you go to be free. Come together right now, over me. Here come Flat-top ,he come. One thing I can tell A
you is you go to be free. Come together right now, over me. Here come Flat-top ,he come. One thing I can
tell you is you go to be free. Come together right now, over me. Here come Flat-top ,he come. One thing I
can tell you is you go to be free. Come together right now, over me. Here come Flat-top ,he come. One A
thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-top ,he come.
One thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-top ,he A
come. One thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-top
,he come. One thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-
top ,he come. One thing I can tell you is you go to be free. Come together right now, over me. Here come
Flat-top ,he come. Lucy in the sky with Diamonde. One thing I can tell you is you go to be free. Come AAA
Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come together right now, over
me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come together right now,
over me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come together rightA
now, over me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come togetherA
right now, over me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come AAA
together right now, over me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. A
Come together right now, over me. Here come Flat-top ,he come. One thing I can tell you is you go to beA
free. Come together right now, over me. Here come Flat-top ,he come. Lucy in the sky with Diamonde. AA
One thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-top ,heAA
come. One thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-top
,he come. One thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-
top ,he come. One thing I can tell you is you go to be free. Come together right now, over me. Lucy in the
sky with Diamonde. Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come AAA
together right now, over me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. A
Come together right now, over me. Here come Flat-top ,he come. One thing I can tell you is you go to be
free. Come together right now, over me. Here come Flat-top ,he come. One thing I can tell you is you goA
to be free. Come together right now, over me. Here come Flat-top ,he come. Lucy in the sky with AAAAA
Diamonde. One thing I can tell you is you go to be free. Come together right now, over me. Here come A
Flat-top ,he come. One thing I can tell you is you go to be free. Come together right now, over me. HereA
come Flat-top ,he come. One thing I can tell you is you go to be free. Come together right now, over me. A
Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come together right now, over
me. Here come Flat-top ,he come. One thing I can tell you is you go to be free. Come together right now,
over me. Here come Flat-top ,he come. Lucy in the sky with Diamonde. One thing I can tell you is you go
to be free. Come together right now, over me. Here come Flat-top ,he come. One thing I can tell you is you
go to be free. Come together right now, over me. Here come Flat-top ,he come. One thing I can tell you is
you go to be free. Come together right now, over me. Here come Flat-top ,he come. One thing I can tell A
you is you go to be free. Come together right now, over me. Here come Flat-top ,he come. One thing I can
tell you is you go to be free. Come together right now, over me. Here come Flat-top ,he come. One thing I
can tell you is you go to be free. Come together right now, over me. Here come Flat-top ,he come. One A
thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-top ,he come.
One thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-top ,he A
come. One thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-top
,he come. One thing I can tell you is you go to be free. Come together right now, over me. Here come Flat-
top ,he come. One thing I can tell you is you go to be free. Come together right now, over me. Here come
Flat-top ,he come. Lucy in the sky with Diamonde. One thing I can tell you is you go to be free. Come AAA
Fig. 6-13 Example of Regular
Marking
The problem may disappear by itself. Try printing
multiple pages to clear this problem especially if the
printer has not been used for a long time.
If the surface of the drum has been scratched, replace
the drum unit with a new one.
If the problem does not disappear, it may be that the
drum has been marked or damaged due to excessive
exposure to light. In this case, replace the drum unit
with a new one.