Brother DCP-L5500D Service Manual page 81

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