Brother HL-3170CDW - Manual (Page 148)

Routine Maintenance
142
4
Cleaning the LED head
4
If there is a problem with the print quality, such as light or faded colors or white streaks or bands down the
page, clean the LED heads as follows:
a Press and hold down to turn the machine off.
b Open the top cover until it locks in the open position.
c
Wipe the windows of LED heads (1) with a dry, lint-free cloth. Be careful not to touch the windows of LED
heads (1) with your fingers.
d Close the top cover of the machine.
e
Turn on the machine.
1
1