Brother DCP-9040CN Service Manual page 248

(3) Release the three Hooks of each Waste toner sensor to remove the two Waste toner
sensors from the Waste toner sensor holder.
Waste toner sensor
<A view>
Hook
(4) Disconnect the Connectors (yellow and blue) from each of the Waste toner sensors.
Connector (blue)
Hook
Hook
"A"
Fig. 3-158
Waste toner sensor
Fig. 3-159
3-116
Waste toner sensor holder
Hooks
Waste toner sensor
Connector (yellow)
Waste toner sensor
Waste toner sensor
Hooks
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