5-20
Confidential
* Among the Regular Ink cartridge models except MFC-J6535DW/J6935DW, supply
super high yield cartridges for any destinations other than China are not displayed on
the LCD even if they are inserted correctly, but they are displayed on the LCD when
inserted further.
(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.
LCD
Sensors Sensing status (display/no display)
A3 ADF document width sensor No A3 document/A3 document present
FC Document cover sensor Document cover closed/Document cover opened
VT Head thermistor Normal temperature/Abnormal temperature
T1
High temperature detector in the
complex IC (for main PCB)
Normal temperature/Abnormal temperature
Q1 T1 paper remaining sensor No recording paper/Recording paper present
Q2 T2 paper remaining sensor No recording paper/Recording paper present
Q3 T3 paper remaining sensor No recording paper/Recording paper present
MR 3rd tray paper pull-in sensor No recording paper/Recording paper present
AD ADF document size sensor Does not function in service maintenance mode.
FD FB document size sensor Does not function in service maintenance mode.
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