Brother MFC-J5335DW Service Manual page 291

LCD
FC Document cover sensor
VT Head thermistor
High temperature detector in the
T1
complex IC (for main PCB)
*3
Q1 T1 paper remaining sensor
*1*3
Q2 T2 paper remaining sensor
*1
Lower tray models only
*2
MP tray models only
*3
Paper remaining sensor models only
(3) Change the detecting conditions (e.g., insert paper through the registration sensor,
open the ink cartridge cover or document scanner, or remove the ink cartridges),
and then check that the indication on the LCD changes according to the sensor
states.
(4) Press the X key to stop this operation and return the machine to the initial stage of
the maintenance mode.
Sensors
Document cover closed/Document cover opened
Normal temperature/Abnormal temperature
Normal temperature/Abnormal temperature
No recording paper/Recording paper present
No recording paper/Recording paper present
5-19
Sensing status (display/no display)
Confidential