Brother HL-1660E User Manual page 192

Black Page
If an entire page is printed in black, make sure that the toner cartridge is
properly installed. Never use heat-sensitive paper, or it may cause this
problem.
Fig. 7-14 Black Page
White Page
If nothing is printed on pages, make sure that the toner cartridge is not
empty, the sealing tape is removed from the toner cartridge, or you use
paper, OHP films, or envelopes that meet specifications.
If a stack of paper is not fanned, more than one sheet may be loaded at a
time, which may cause blank pages to be ejected.
Fig. 7-15 White Page
CHAPTER 7 TROUBLESHOOTING
7–17