Brother HLL3290CDW Service Manual page 109

■
Error code 4500
Number of used pages for the fuser unit has reached the upper limit. (Printing does not stop.)
Step
End of life of the fuser unit
1
Replace the fuser unit with a new
one and reset the fuser unit
2
counter. If the error display is not
cleared, the main PCB is faulty.
■
Error code 4700
The waste toner sensor detected that the waste toner box is almost full.
Error code 4800
After the waste toner sensor detected that the waste toner box was almost full, pages more
than the specified number have been printed.
<User Check>
• Replace the waste toner box.
Step
Connection failure of the high-
1
voltage power supply flat cable
High-voltage power supply PCB
2
failure
3 Main PCB failure
Cause
Cause
2-73
Remedy
Replace the fuser unit. Refer to
Reset counters for consumable parts
(Function code 88)" in Chapter 5
the fuser unit counter after the
replacement.
Replace the main PCB.
Remedy
Reconnect the high-voltage power supply
flat cable.
Replace the high-voltage power supply
PCB.
Replace the main PCB.
"1.3.36
to reset
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