Brother MFC-7365DN Service Manual

2-84
Confidential
■ Image distortion
■ All black
■ The back of paper gets dirty
Step Cause Remedy
1
Laser unit not assembled correctly Assemble the laser unit correctly and
secure the screw.
2 Laser unit failure Replace the laser unit.
3 Main PCB failure Replace the main PCB ASSY.
User Check
• Clean the corona wire of drum unit.
• Replace the drum unit with a new one.
Step Cause Remedy
1
Dirt on drum unit and machine
body electrodes
Clean the electrodes of the drum unit and
machine body. (Refer to Fig. 2-11, Fig. 2-
12.)
2
Scanner harness of the laser unit
connection failure
Reconnect the scanner harness of the
laser unit.
3
FG plate connection failure Reconnect the FG plate between the laser
unit and develop drive sub ASSY securely,
and secure the screw.
4
High voltage power supply PCB
ASSY failure
Replace the high voltage power supply
PCB ASSY.
5 Laser unit failure Replace the laser unit.
6 Main PCB failure Replace the main PCB ASSY.
User Check
• This problem may disappear after printing approximately
10 pages of completely blank sheets.
Step Cause Remedy
1 Dirt on the fuser unit Replace the fuser unit.
2 Dirt in the paper feed system Wipe dirt off.

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