Brother MFC-7365DN Service Manual

2-88
Confidential
■ White spots
■ Black spots
User Check
• When the white spots at 32.5 mm are intervals, replace the toner
cartridge with a new one.
• If the same problem occurs after printing a few pages, the adhesive
of the label or the like, paper powder or dirt may be attached on the
surface of the exposure drum. Wipe off the dirt on the exposure
drum. (Refer to User’s guide, and perform the Drum Cleaning.)
• When the white spots at 94.2 mm are intervals, replace the drum
unit with a new one.
Step Cause Remedy
1
Dirt on the electrodes of the drum
unit and the machine body
Clean the electrodes of the drum unit and
machine body. (Refer to Fig. 2-11, Fig. 2-
12.)
2
High voltage power supply PCB
ASSY failure
Replace the high voltage power supply
PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.
User Check
• When the black spots at 32.5 mm are intervals, replace the toner
cartridge with a new one.
• If the same problem occurs after printing a few pages, the adhesive
of the label or the like, paper powder or dirt may be attached on the
surface of the exposure drum. Wipe off the dirt on the exposure
drum. (Refer to User’s guide, and perform the Drum Cleaning.)
• When the black spots at 94.2 mm are intervals, replace the drum
unit with a new one.
Step Cause Remedy
1
Dirt on the electrodes of the drum
unit and the machine body
Clean the electrodes of the drum unit and
machine body. (Refer to Fig. 2-11, Fig. 2-
12.)
2
Dirt on the heat roller Refer to “2-85 How to clean the heat roller”,
and clean the heat roller.
3
Scratch on the heat roller
(Black spots at 53.4 mm)
Replace the fuser unit.
4
High voltage power supply PCB
ASSY failure
Replace the high voltage power supply
PCB ASSY.
5 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