Brother MFC-7365DN Service Manual

2-80
Confidential
3.6.2 Troubleshooting image defect
Image defect related problems are user recoverable if following the User Check items. If the
same problem occurs, follow each procedure in the order of the number described in the
Step column in the tables below.
■ Light
User Check
• Check the machine's environment. High temperature and high
humidity or low temperature and low humidity conditions can cause
this problem.
• If the whole page is light, toner save mode may be on. Off the toner
save mode.
• Adjust the density by the Density Adjustment.
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one. If remove the used
toner cartridge and replace a relatively new used toner cartridge,
this case is caused.
Step Cause Remedy
1
Dirt on electrodes of the drum unit
and machine body
Clean the electrodes of the drum unit and
machine body. (Refer to Fig. 2-11, Fig. 2-
12.)
2 Develop bias failure Reset the counter of develop roller.
3
High voltage power supply PCB
ASSY failure
Replace the high voltage power supply
PCB ASSY.
4 Laser unit failure Replace the laser unit.
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