Brother HL-L2370DN Service Manual

2-64
Confidential
4.3.2 Troubleshooting image defect
Image defect related problems are end user recoverable if following the User Check items. If
the same problem occurs again, follow each procedure in the order of the number described in
the Step column in the tables below.
 Light
 Electrodes location of the toner cartridge
Fig. 2-12
<User Check>
• Check the usage environment of the machine. Using the machine in
hot-humid or cold-dry conditions can cause this problem.
• If the whole page is light, toner save mode may be ON. Turn OFF the
toner save mode.
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.
• Turn ON the power switch, and leave the machine for a while
(condensation).
• Check if paper is not damp.
• Use specified paper.
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 (P2-
42) and Fig. 2-9 (P2-42).)
2
Dirt on the electrodes of the
toner cartridge and those of
the machine
Clean the electrodes of the toner cartridge,
process unit and those of the machine.
(Refer to Fig. 2-8 (P2-42), below and Fig. 2-
13 (P2-65).)
3
Dirt on the electrodes of the
high-voltage power supply
PCB and those of the
machine
Clean the electrodes of the high-voltage
power supply PCB and those of the machine.
4 Fuser unit failure Replace the fuser unit.
5
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
6 Main PCB failure Replace the main PCB ASSY.

Brother HL-L2370DN Specifications

General

N-up printing	2, 4, 9, 16, 25
Duplex printing	Yes
Print technology	Laser
Maximum resolution	2400 x 600 DPI
Duplex printing mode	Auto/Manual
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	34 ppm
Printing colors	Black
Maximum duty cycle	- pages per month
Recommended duty cycle	250 - 2000 pages per month
Number of print cartridges	1
Page description languages	PCL 6
Display	LCD
Display number of lines	1 lines
Power consumption (off)	0.03 W
Power consumption (standby)	48 W
Power consumption (printing)	510 W
Power consumption (PowerSave)	265 W
Energy Star Typical Electricity Consumption (TEC)	1.227 kWh/week
Maximum internal memory	- MB
Sound pressure level (printing)	49 dB
Sound pressure level (quiet mode)	44 dB
Paper tray media types	Plain paper, Recycled paper, Thick paper, Thin paper
Paper tray media weight	60 - 163 g/m²
ISO A-series sizes (A0...A9)	A4, A5, A6
Multi-purpose tray media types	Bond paper, Envelopes, Labels, Plain paper, Recycled paper, Thick paper, Thicker paper, Thin paper
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 230 g/m²
Cabling technology	10/100Base-T(X)
Ethernet LAN data rates	10, 100 Mbit/s
Mobile printing technologies	Apple AirPrint, Google Cloud Print, Mopria Print Service
Standard interfaces	Ethernet, USB 2.0
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Package depth	283 mm
Package width	438 mm
Package height	519 mm
Package weight	8300 g
Sustainability certificates	Blue Angel, ENERGY STAR
Cables included	AC
Included cartridge capacity (black)	700 pages
Total input capacity	250 sheets
Total output capacity	150 sheets
Mac operating systems supported	Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra
Server operating systems supported	Windows Server 2008, Windows Server 2008 R2, Windows Server 2008 x64, Windows Server 2012, Windows Server 2012 R2, Windows Server 2012 x64, Windows Server 2016
Windows operating systems supported	Windows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Enterprise x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64
Harmonized System (HS) code	84433210

Weight and Dimensions

Depth	360 mm
Width	356 mm
Height	183 mm