Brother MFC-9465CDN - Page 98

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Confidential
■ Error code 71
Laser unit polygon motor error.
Error code 72
Beam detecting sensor (Black/Yellow) error of the laser unit.
Error code 73
Beam detecting sensor (Cyan/Magenta) error of the laser unit.
<User Check>
- Open the front and rear covers and leave them for 30 minutes or more with the power ON.
After that, close the front and rear covers and turn OFF and ON the power switch.
■ Error code 74 (This error can be found out only in “Function code 82”.)
The color toner reached the end of life during printing.
<User Check>
- Replace the toner cartridge which reached the end of life with a new one.
Print Unable 71
Turn the power off and then back on again.
Print Unable 72
Turn the power off and then back on again.
Print Unable 73
Turn the power off and then back on again.
Step Cause Remedy
1 Harness connection failure of
laser unit
Check the harness connections (at three
locations) of the laser unit and reconnect
them.
2 Laser unit failure Replace the laser unit.
3 Engine PCB failure Replace the engine PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.
Replace Toner
Open the Front Cover, replace Toner Cartridge.
Step Cause Remedy
1 Toner/New sensor PCB failure
(Toner empty)
Check the sensor performance following
the procedure described in “Function code
32”. If any problem occurs, replace the
Toner/New sensor PCB ASSY.
2 Engine PCB failure Replace the engine PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.