Brother MFC-8520DN Service Manual

2-9
Confidential
2.3 Operation of Each Part
Part name Operation
T1 pick-up roller Picks up the paper from paper tray 1.
T1 separation roller /
T1 separation pad
Separates the paper fed from paper tray 1 into single sheets.
T1 paper feed actuator
(T1 paper feed sensor)
Detects paper tray 1.
Detects a paper jam at the front section of the machine.
Detects the rear edge of the paper to determine the feed
timing of the next sheet of paper.
Registration front actuator
(Registration front sensor)
Detects the front edge of the paper to control the registration
roller drive.
Detects a paper jam at the front section of the machine.
Registration roller Corrects the paper alignment when the paper makes contact
with the stopped registration roller. Feeds the paper after
correction.
Registration rear actuator
(Registration rear sensor)
Detects the front edge of the paper to adjust the writing start
position.
Detects a paper jam at the center section of the machine.
Detects the front and rear edges of the paper to determine
the paper size.
Heat unit
Pressure roller
Fuses the toner transferred to the paper by heat and
pressure, and feeds the paper to the eject roller.
Eject actuator
(Eject sensor)
Determines whether the paper is ejected from the fuser unit.
Detects the rear edge of the paper in duplex printing mode to
adjust the eject roller change timing.
Detects a paper jam at the rear section of the machine.
Determines whether the fuser cover is open when the back
cover is open.
Eject roller 1 Feeds the paper ejected from the fuser unit to eject roller 2.
Eject roller 2 Feeds the paper ejected from eject roller 1 to the output tray.
In duplex printing mode, rotates conversely after the paper is
fed a short distance to feed the paper to the duplex tray.
Duplex paper feed roller Feeds the paper passing through the duplex tray to the
registration roller.
MP pick-up roller Picks up the paper from the MP tray.
MP separation roller /
MP separation pad
Separates the paper fed from the MP tray into single sheets.
MP paper empty actuator 1/2
(MP paper empty sensor)
Detects the paper in the MP tray.
T2 pick-up roller Picks up the paper from paper tray 2.
T2 separation roller /
T2 separation pad
Separates the paper fed from paper tray 2 into single sheets.
T2 paper feed actuator
(T2 paper feed sensor)
Detects paper tray 2.
Detects a paper jam at the front section of paper tray 2.
Determines whether the paper was fed.
Back cover sensor Detects open back cover or incorrect setting of the duplex
tray. (Cannot determine which case applies.)
Front cover sensor Detects open front cover.
T2 connect sensor Detects connection of paper tray 2.

Brother MFC-8520DN Specifications

General

Print technology	Laser
Maximum resolution	1200 x 1200 DPI
Economical printing	Yes
Duplex printing mode	Auto
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	36 ppm
Duplex print speed (black, normal quality, A4/US Letter)	9 ppm
PictBridge	No
Scan speed	2.68 sec/page
Dimensions (WxDxH)	405 x 415 x 423 mm
All-in-one functions	Copy, Fax, Print, Scan
Color all-in-one functions	Scan
Printing colors	Black
Maximum duty cycle	- pages per month
Recommended duty cycle	500 - 3500 pages per month
Number of print cartridges	1
Page description languages	BR-Script 3, Epson FX, IBM ProPrinter, PCL 6
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
Maximum number of copies	99 copies
N-in-1 copy function (N=)	2, 4, 9, 16, 25
Time to first copy (black, normal)	10.5 s
Copy speed (black, normal quality, A4)	36 cpm
Scan to	E-mail, E-mail Server, File, FTP, Image, OCR, USB
Scan drivers	ICA, ISIS, TWAIN
Scanner type	Flatbed & ADF scanner
Grayscale levels	256
Input color depth	48 bit
Maximum scan area	Legal (216 x 356) mm
Output color depth	24 bit
Image formats supported	BMP, JPG
Maximum scan resolution	19200 x 19200 DPI
Document formats supported	PDF
Faxing	Mono faxing
Fax memory	500 pages
Modem speed	33.6 Kbit/s
Fax coding methods	JBIG, JPEG, MH, MMR (Fax coding method), MR
Fax speed dialing (max numbers)	300
Paper input type	Paper tray
Total input capacity	250 sheets
Total output capacity	150 sheets
Maximum input capacity	850 sheets
Maximum number of input trays	2
Multi-Purpose tray input capacity	50 sheets
Auto document feeder (ADF) input capacity	35 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	Bond paper, Plain paper, Pre-Printed, Recycled paper, Thin paper
Paper tray media weight	60 - 105 g/m²
Non-ISO print media sizes	Legal
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
Auto Document Feeder (ADF) media weight	64 - 90 g/m²
Display	LCD
Market positioning	Home & office
Display number of lines	5 lines
Display number of characters	22
Standard interfaces	Ethernet, USB 2.0
Security algorithms	802.1x RADIUS, EAP, EAP-TLS, EAP-TTLS, MD5, PEAP
Processor family	Star Sapphire
Maximum internal memory	384 MB
Sound power level (standby)	37 dB
Sound pressure level (printing)	59 dB
Sound pressure level (quiet mode)	54 dB
AC input voltage	220 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (off)	1.2 W
Power consumption (standby)	8.1 W
Power consumption (PowerSave)	336 W
Power consumption (average operating)	651 W
Package weight	20.100 g
Sustainability certificates	ENERGY STAR