Brother MFC-8540DN Service Manual

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 Error code 4500
The number of printable pages of the fuser unit has reached the upper limit.
 Error code 4600
The number of printable pages of the laser unit has reached the upper limit.
 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 Cause Remedy
1
End of life of the fuser unit Replace the fuser unit. Refer to “1.3.31 Reset
counters for consumable parts (function code:
88)” in Chapter 5 to reset the fuser unit counter
after the replacement.
2
Replace the fuser unit with a
new one and reset the fuser unit
counter. If the error display is not
cleared, the main PCB is faulty.
Replace the main PCB ASSY.
Step Cause Remedy
1
End of life of the laser unit Replace the laser unit. Refer to “1.3.31 Reset
counters for consumable parts (function code:
88)” in Chapter 5 to reset the laser unit counter
after the replacement.
2
Replace the laser unit with a
new one and reset the laser unit
counter. If the error display is not
cleared, the main PCB is faulty.
Replace the main PCB ASSY.
Step Cause Remedy
1
Replace the toner cartridge with
a new one. If the error display is
not cleared, 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