![Brother HL-3140CW User Manual Download Page 139](http://html.mh-extra.com/html/brother/hl-3140cw/hl-3140cw_user-manual_53624139.webp)
Routine Maintenance
133
4
Replacing the waste toner box
4
Order No. WT-220CL
The life of a waste toner box is approximately 50,000 A4 or Letter size single-sided pages.
WT Box End Soon
4
WT Box End Soon
If the LCD shows
WT Box End Soon
, it means the waste toner box is near the end of its life. Buy a new
waste toner box and have it ready before you get a
Replace WT Box
message. To replace the waste toner
box, see Replacing the waste toner box on page 133.
Replace WT Box
4
When the following message appears on the LCD, you must replace the waste toner box:
Replace WT Box
Replacing the waste toner box
4
a
Make sure that the machine is turned on.
b
Open the top cover until it locks in the open position.