Brother HL-1112 - LED Display When Service Call Occurs

1-10
Confidential
3.2 LED Display when Service Call Occurs
Two LEDs flash when unresolvable errors occur. Pressing the button allows you to
identify the location of the problem based on the combination of the LED status: lit, flashing
or unlit.
In the event that a service call occurs, instruct end users to turn the power switch OFF and
then ON again after several seconds. If the service call still occurs, refer to the page shown in
the “Refer to:” column in the table below to take appropriate measures.
The number in the “number of times the button is pressed” column indicates number of
times the LED flashes every 0.5 seconds.
LED
Type of problem
Refer
to:
When error
occurs:
Press the
button
once
Press the
button
twice
Flashes
every 0.5
seconds
11
Irregular power supply detection error
4.7.8
Flashes
every 0.5
seconds
12
Irregular power supply detection error
(More than 100 times detected in total)
4.7.8
Flashes
every 0.5
seconds
21
High voltage power supply PCB failure
4.7.9
Flashes
every 0.5
seconds
32
The center thermistor of the fuser unit
detected a temperature fall greater than
the specified value within the specified
time.
4.5.1
Flashes
every 0.5
seconds
33
The center thermistor of the fuser unit
detected a sharp temperature gradient
greater than the specified value within
the specified time.
4.5.1
Flashes
every 0.5
seconds
34
The center thermistor of the fuser unit
detected a temperature rise greater
than the specified value within the
specified time.
4.5.1