Brother HL-5440D Service Manual page 61

Press [Go] and
LED
[Cancel]
simultaneously once
Press [Go] and
[Cancel]
simultaneously twice
The center thermistor of the fuser
unit detected a temperature rise
greater than the specified value
within the specified time.
The center thermistor of the fuser
unit detected a temperature fall
greater than the specified value
within the specified time.
Fuser unit error (except error
codes 6A00 to 6F00, 7600, 7800,
DE00, and E200)
When the center thermistor of the
fuser unit is higher than the idle
temperature, the side thermistor
detected a temperature lower than
the specified temperature.
When the center thermistor of the
fuser unit is higher than the idle
temperature, the side thermistor
detected a temperature higher
than the specified temperature.
2-25
Type of problem
Error Refer
codes to:
7600 2-39
7800 2-39
DD00 2-51
DE00 2-52
E200 2-53
Confidential