Brother HL-5440D Service Manual page 151

(4) Release the heater harness of the fuser unit from the guide on the main frame R, and
disconnect the heater harness from the low-voltage-heater harness.
Heater harness
Low-voltage-heater harness
Harness routing: Refer to
(5) Remove the fuser unit ground spring from the fuser unit.
(6) Release the center thermistor harness and the side thermistor harness of the fuser unit
from the guide, and disconnect these harnesses from the eject sensor PCB ASSY.
Note:
• When disconnecting the harness, hold the top of the PCB connector to prevent the
PCB connector being damaged.
Eject sensor PCB ASSY
Fuser unit
Harness routing: Refer to
Guide
Fig. 3-30
"3.Fuser unit".
<Frame L side>
Side thermistor harness
Fig. 3-31
"3.Fuser unit".
3-32
<Frame R side>
Fuser unit
Center thermistor
harness
Fuser unit ground
spring
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