Brother HL-4050CDN - Page 35

Confidential
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Error code 58
Fuser Error
Turn the power off, then on again. Leave the machine for 15 min.
Error code 59
Self-Diagnostic
Will Automatically Restart within 15 minutes.
If the same error is detected again 15 minutes later, the message below is indicated.
Print Unable 6A
Turn the power off and then back on again.
Fuser unit failure * The code included in the message above is some one of 68, 69,
6A, 6B, 6C, 6D, 6E, 6F, 76 and 78.
Step Cause
Remedy
1 Harness connection failure
between fuser unit connector
and engine PCB
Check the harness connection between the fuser
unit connector and engine PCB, and reconnect it.
2 Fuser unit failure Replace the fuser unit.
3 Low-voltage power supply
PCB failure
Replace the PS PCB unit.
4 Engine PCB failure Replace the engine PCB ASSY.
Error code 5A
Print Unable 5A
Turn the power off and then back on again.
Charge HVPS PCB failure
Step Cause
Remedy
1 Charge HVPS PCB ASSY
harness connection failure
Check the harness connection between the
charge HVPS PCB and engine PCB, and the one
between the charge HVPS PCB and low-voltage
power supply PCB. Then, reconnect them.
2 Charge HVPS PCB failure Replace the charge HVPS PCB ASSY.
3 Engine PCB failure Replace the engine PCB ASSY.