Brother HL-5440D Service Manual page 63

Press [Go] and
LED
[Cancel]
simultaneously once
Press [Go] and
[Cancel]
simultaneously twice
Cannot detect the synchronized
signal of the main motor.
The speed of the main motor does
not stabilize within the specified
time.
Detected an error in the
synchronized signal of the polygon
motor for the laser unit.
Cannot detect the signal from the
beam detecting sensor for the
laser unit.
The main PCB detected a main fan
failure.
2-27
Type of problem
Error Refer
codes to:
7A00 2-39
7100 2-38
7200 2-38
EC00 2-54
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