Brother HL-5450DN Service Manual

ii
Confidential
4.2.4 Duplex printing is not possible............................................................................. 2-58
4.2.5 Paper is curled .................................................................................................... 2-58
4.2.6 Only single surface is printed in duplex printing mode ........................................ 2-58
4.3 Troubleshooting for Image Defects.................................................................................... 2-59
4.3.1 Image defect examples ....................................................................................... 2-59
4.3.2 Troubleshooting according to image defect ........................................................ 2-60
4.4 Troubleshooting for Software Problems ............................................................................ 2-73
4.4.1 Cannot print data................................................................................................. 2-73
4.5 Troubleshooting for Network Problems ............................................................................. 2-74
4.5.1 Cannot print via network connection ................................................................... 2-74
4.5.2 Cannot connect to access point .......................................................................... 2-74
4.6 Troubleshooting for Control Panel Problems..................................................................... 2-75
4.6.1 Nothing is displayed on the LCD ......................................................................... 2-75
4.6.2 LEDs are not activated ........................................................................................ 2-75
4.6.3 Control panel is inoperable.................................................................................. 2-75
4.7 Troubleshooting for Toner and Drum Problems ................................................................ 2-76
4.7.1 New toner is not detected.................................................................................... 2-76
4.7.2 Cartridge error (toner cartridge cannot be detected)........................................... 2-76
4.7.3 Drum error ........................................................................................................... 2-76
4.8 Troubleshooting for Fuser Unit Problems .......................................................................... 2-77
4.8.1 Fuser unit failure.................................................................................................. 2-77
4.9 Troubleshooting for Laser Unit Problems .......................................................................... 2-78
4.9.1 Laser unit failure.................................................................................................. 2-78
4.10 Troubleshooting for PCB Problems ................................................................................... 2-79
4.10.1 Main PCB failure ................................................................................................. 2-79
4.10.2 High-voltage power supply PCB failure............................................................... 2-79
4.10.3 Low-voltage power supply PCB failure................................................................ 2-79
4.11 Troubleshooting for Other Problems.................................................................................. 2-80
4.11.1 Machine is not turned ON.................................................................................... 2-80
4.11.2 Main fan does not rotate...................................................................................... 2-80
4.11.3 Main motor failure................................................................................................ 2-80
4.11.4 Unusual noise is generated from the machine .................................................... 2-80
CHAPTER 3 DISASSEMBLY/REASSEMBLY
1. SAFETY PRECAUTIONS............................................................................................................. 3-1
2. PACKING ..................................................................................................................................... 3-2
3. SCREW CATALOGUE................................................................................................................. 3-3
4. SCREW TORQUE LIST ............................................................................................................... 3-4
5. LUBRICATION ............................................................................................................................. 3-6
6. OVERVIEW OF GEARS............................................................................................................... 3-7
7. HARNESS ROUTING................................................................................................................... 3-9
8. DISASSEMBLY FLOW CHART................................................................................................. 3-14

Brother HL-5450DN Specifications

General

Color	No
N-up printing	2, 4, 9, 16, 25
Duplex printing	Yes
Print technology	Laser
Maximum resolution	2400 x 600 DPI
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	38 ppm
Duplex print speed (black, normal quality, A4/US Letter)	9 ppm
Maximum duty cycle	- pages per month
Recommended duty cycle	1000 - 3500 pages per month
Number of print cartridges	1
Memory type	DDR2
Processor family	Star Sapphire
Maximum internal memory	320 MB
Sound power level (standby)	34 dB
Sound pressure level (printing)	59 dB
Sound pressure level (quiet mode)	54 dB
Total input capacity	250 sheets
Total output capacity	150 sheets
Maximum input capacity	800 sheets
Total number of input trays	2
Multi-Purpose tray input capacity	50 sheets
Custom media width	76.2 - 215.9 mm
Maximum print size	216 x 356 mm
Custom media length	127 - 355.6 mm
Paper tray media types	Plain paper, Recycled paper
Paper tray media weight	60 - 105 g/m²
Non-ISO print media sizes	Letter
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5, B6
Multi-purpose tray media types	Bond paper, Envelopes, Heavyweight paper, Labels, Plain paper, Recycled paper
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 163 g/m²
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.
AC input voltage	220 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (off)	0.41 W
Power consumption (standby)	4.7 W
Power consumption (printing)	665 W
Power consumption (PowerSave)	0.6 W
Package weight	11.900 g
Sustainability certificates	ENERGY STAR

Weight and Dimensions

Dimensions (WxDxH)	371 x 384 x 245 mm