Brother MFC-7365DN Service Manual

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Confidential
■ Error code 71
The rotation of the polygon motor in the laser unit is unstable. (A synchronized signal cannot
be detected.)
Error code 72
Failed to detect the beam by BD sensor of the laser unit.
■ Error code 73
These errors do not usually occur in the normal use. The conceivable causes are noise around
the installation site, fluctuation of the power supply voltage, and failures in the software.
Error, which cannot be specified, occurs.
Error code 74
Error, which cannot be specified, occurs.
Print Unable 71
Turn the power off and then back on again.
Print Unable 72
Turn the power off and then back on again.
<User Check>
• There is a possibility that the condensation has occurred. Turn off the power, and leave
the machine at least one hour in a well-ventilated place. And then turn on the power.
Step Cause Remedy
1
Correction value error of laser unit Input the correction value of the laser unit
correctly.
2
Harness connection failure of laser
unit
Check the harness connection of the laser
unit and reconnect them.
3 Main PCB failure Replace the main PCB ASSY.
4 Laser unit failure Replace the laser unit.
Print Unable 73
Turn the power off and then back on again.
Replace Toner
Open the Front Cover, replace Toner Cartridge.
<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.

Brother MFC-7365DN Specifications

Printing Specifications

print technology	Electrophotographic Laser
print speed	Up to 24ppm
print resolution	Up to 1200 x 600 dpi

Copying Specifications

copy speed	Up to 24cpm
copy resolution	600 x 600 dpi
copy reduction/enlargement	25% - 400% in 1% increments

Scanning Specifications

scanner type	Color Flatbed with ADF
document glass size	8.5” x 11” (letter)
scan resolution	Optical: Up to 600 x 2400 dpi

Paper Handling

paper size maximum	Up to 8.5” x 14” (legal size)
paper input capacity maximum	250-sheet capacity paper tray, single-sheet manual feed slot
output capacity maximum	100 sheets (face down), 1 sheet (face up)

Weight and Dimensions

unit dimensions	15.9” W x 15.7” D x 12.4” H
unit weight	25.6 lbs.
carton weight	32.6 lbs.
carton dimensions	20.7” W x 20.1” D x 19.4” H