Brother DCP-7057 Service Manual page 75

■ Error code 59
Self-Diagnostic
Will Automatically Restart within 15 minutes.
Error code displayed to prompt the operator to leave the machine for a certain time when
power was turned OFF and then ON again after error 58 occurred.
Step
Harness connection failure
1 between fuser unit connector and
paper eject sensor PCB ASSY
Harness connection failure
between fuser unit connector and
2
low voltage power supply PCB
ASSY
Harness connection failure
3 between paper eject sensor PCB
and main PCB
Paper eject sensor PCB failure
4
Low voltage power supply PCB
5
failure
6 Main PCB failure
7 Fuser unit failure
CAUTION :
• Turn off the power switch once, and after checking that the fuser unit sufficiently cools
down, turn on the power switch again and leave the machine for ten minutes. Then, this
problem may be cleared.
Cause
2-38
Remedy
Check the harness connection between the
fuser unit connector and paper eject sensor
PCB ASSY, and reconnect it.
Check the harness connection between the
fuser unit connector and low voltage power
supply PCB ASSY, and reconnect it.
Check the harness connection between the
paper eject sensor PCB and main PCB,
and reconnect it.
Replace the paper eject sensor PCB
ASSY.
Replace the low voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
Replace the fuser unit.
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