Brother MFC-L2700D Service Manual

2-70
Confidential
 All black
 Dirt on the paper
<User Check>
- Clean the corona wire of the drum unit.
- Replace the drum unit with a new one.
Step Cause Remedy
1
Dirt on the electrodes of the drum
unit and those of the machine
Clean the electrodes of the drum unit and
those of the machine. (Refer to Fig. 2-8 and
Fig. 2-9.)
2
Dirt on the electrodes of the toner
cartridge and those of the machine
Clean the electrodes of the toner cartridge
and those of the machine. (Refer to Fig. 2-8
and Fig. 2-9.)
3
Laser unit flat cable failure Replace the laser unit flat cable.
4
Dirt on the electrodes of the high-
voltage power supply PCB
Clean the electrodes of the machine.
(Refer to Fig. 2-9.)
5
High-voltage power supply PCB
failure
Replace the high-voltage power supply PCB
ASSY.
6
Laser unit failure Replace the laser unit.
7
Main PCB failure Replace the main PCB ASSY.
<User Check>
- This problem may disappear after printing multiple
sheets of paper.
- Replace the drum unit with a new one.
Step Cause Remedy
1
Dirt on the paper feed system Wipe off the dirt.
2
Dirt on the fuser unit Replace the fuser unit.
3
High-voltage power supply PCB
failure
Replace the high-voltage power supply
PCB ASSY.

Brother MFC-L2700D Specifications

General

Print Technology	Laser
Print Resolution	Up to 2400 x 600 dpi
Duplex Printing	Yes
Paper Input Capacity	250 sheets
Monthly Duty Cycle	Up to 10, 000 pages
Functions	Print, Copy, Scan, Fax
ADF Capacity	35 sheets
Memory	32 MB
Fax Speed	33.6 Kbps
Print Speed	Up to 27 ppm
Connectivity	USB 2.0
Scanner Type	Flatbed
Copy Speed	Up to 27 cpm
Scan Resolution	Up to 600 x 2400 dpi
Display	2-line LCD