Brother MFC-7240 - Routine Maintenance; Replacing the Consumable Items

2-29
Confidential
 Error code 51 to 55
These errors do not usually occur in the normal use. The conceivable causes are noise
around the installation site, fluctuation of the power supply voltage, and failures in the
software.
An unidentified error occurred.
 Error code 56
The eject sensor detected that the fuser unit cover was open.
 Error code 57
This error does not usually occur in the normal use. The conceivable causes are noise
around the installation site, fluctuation of the power supply voltage, and failures in the
software.
An unidentified error occurred.
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<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
Cover is Open
Close the Fuser Cover which can be found behind the Back Cover of the machine.
<User Check>
• Close the fuser unit cover properly.
Step Cause Remedy
1
Paper eject actuator catching
on some position
Correct the position of the paper eject actuator.
2
Eject sensor PCB failure Check the sensor performance following the
procedure in "Function code 32". If any
problem occurs, replace the eject sensor PCB
ASSY.
3 Main PCB failure Replace the main PCB ASSY.
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<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.