Brother HL-630 User Manual page 71

The whole page is printed
in black.
Nothing is printed on the
page.
Wipe the electric plate with cleaning alcohol.
See "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 after cleaning,
replace the drum unit with a new one.
Fig. 6-11 Black Page
Make sure that the toner cartridge is not
empty and that the sealing tape had been
removed from the toner cartridge.
Wipe the electric plate with cleaning
alcohol. See "Cleaning the printer interior
and Drum Unit" in Chapter 5.
Fig. 6-12 White Page
CHAPTER 6 TROUBLESHOOTING
6–15