Brother HL-L5000D Service Manual page 76

 Error code 4600
The number of printable pages of the laser unit has reached the upper limit.
Step
End of life of the laser unit
1
Replace the laser unit with a
new one and reset the laser unit
2
counter. If the error display is not
cleared, the main PCB is faulty.
 Error code 4B01
Dot counter or develop roller counter of the toner is reaching the upper limit.
Error code 4C01
Dot counter or develop roller counter of the toner has reached the upper limit.
Step
Replace the toner cartridge with
a new one. If the error display is
1
not cleared, the main PCB is
faulty.
 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.
Cause
Replace the laser unit. Refer to
counters for consumable parts (function code:
88)" in Chapter 5
after the replacement.
Replace the main PCB ASSY.
Cause
Replace the main PCB ASSY.
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.
2-50
Remedy
"1.3.22 Reset
to reset the laser unit counter
Remedy
Remedy
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