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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.
Error code 4F01
The new toner sensor could not detect the new toner cartridge correctly.
Step
Cause
Remedy
1
End of life of the laser unit
Replace the laser unit. Refer to
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.
<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.