Brother HL-2440 Service Manual page 31

11) Memory full
Memory full
User Check
• Press the [Go] button, then print the stored data.
• Reduce the data capacity or reduce the print resolution.
12) Print overrun
Data expansion is not in time
User Check
• Reduce the complexity of data or reduce the print resolution.
13) Main PCB failure
User Check
• Turn the power off and on.
Step
1 Main PCB failure
14) Fuser unit failure
Step
Harness connection failure
1 between fuser unit connector and
eject sensor PCB ASSY
2 Fuser unit failure
Low-voltage power supply PCB
3
failure
4 Toner LED PCB failure
5 Main PCB failure
CAUTION:
This problem will be cleared if leaving the machine power ON for ten minutes.
Turn the power on while pressing the SW supporter, when the front cover is open. And check
that Toner, Drum and Error LEDs light up, and then release the SW supporter.
Check that all LEDs go off and press the SW supporter once, and then this problem may be
cleared by that press the SW supporter once again after all LEDs light up.
Cause
Cause
1-16
Remedy
Replace the main PCB ASSY.
Remedy
Check the harness connection between
fuser unit connector and eject sensor PCB
ASSY.
Replace fuser unit.
Replace the PS PCB unit.
Replace the toner LED PCB ASSY.
Replace the main PCB ASSY.
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