Brother MFC-8540DN Service Manual

2-46
Confidential
 Error code 4F01
The new toner sensor could not detect the new toner cartridge correctly.
 Error code 5001
Printable pages set for PF kit MP have reached the upper limit.
Error code 5002
Printable pages set for PF kit 1 have reached the upper limit.
Error code 5003
Printable pages set for PF kit 2 have reached the upper limit.
Error code 5004
Printable pages set for PF kit 3 have reached the upper limit.
Error code 5005
Printable pages set for PF kit 4 have reached the upper limit.
Error code 5006
Printable pages set for PF kit 5 have reached the upper limit.
<User Check>
• If the machine is on the uneven surface, place it on a level surface.
Step Cause Remedy
1
Connection failure of the relay
front harness
Reconnect the relay front harness.
2
New toner actuator coming off
or caught in some sections of
the machine
Reattach the new toner actuator.
3
Develop joint coming off or
caught in some sections of the
machine
Reattach the develop joint.
4 New toner sensor failure Replace the relay front PCB ASSY.
5 Paper feed drive gears failure Replace the main frame L ASSY.
6
If the error display is not cleared
after replacing the toner
cartridge with a new one again,
the main PCB is faulty.
Replace the main PCB ASSY.
Step Cause Remedy
1
End of life of the applicable PF
kit
Replace the applicable PF kit. Refer to “1.3.31
Reset counters for consumable parts (function
code: 88)” in Chapter 5 to reset the applicable
PF kit counter after the replacement.
2
If the error display is not cleared
after the applicable PF kit
counter has been reset, the
main PCB is faulty.
Replace the main PCB ASSY.

Brother MFC-8540DN Specifications

General

Brand	Brother
Model	MFC-8540DN
Category	All in One Printer
Language	English