Brother MFC-8520DN Service Manual

5-1
Confidential
1. MAINTENANCE MODE
Maintenance mode is exclusively designed for checking, setting and adjusting the machine
using the buttons on the control panel.
Using maintenance mode functions, you can conduct operational checks of sensors or test
printing, display the log information or error codes, and change the worker switches (WSW) etc.
1.1 How to Enter Maintenance Mode
1.1.1 Method of entering end-user accessible maintenance mode
Basically, the maintenance mode functions should only be accessed by service personnel.
However, end users are allowed to use some of these functions under the guidance of service
personnel over the phone. End users can only use the functions shaded in the table on the on
page 5-2 (function codes 06, 09, 10, 11, 12, 25, 43, 45, 52, 53, 54, 61, 77, 80, 82, 87, 88 and
91).
<Operating Procedure>
1.1.2 Method of entering maintenance mode for service personnel
<Operating Procedure>
Non touch panel models
(1) While the machine is in the ready state,
press the [Menu], [Start], and [Menu]
buttons in this order.
"0" is displayed on the LCD.
(2) Use the keypad to enter the
maintenance mode function code to be
executed.
(3) Each time the selected maintenance
mode function is completed, the
machine returns to the ready state
automatically.
Touch panel models
(1) While the machine is in the ready state,
press the [Menu], [Start], and [0]
buttons in this order.
"0" is displayed on the LCD.
(2) Use the keypad to enter the
maintenance mode function code to be
executed.
(3) Each time the selected maintenance
mode function is completed, the
machine returns to the ready state
automatically.
Non touch panel models
(1) While the machine is in the ready state,
press the [Menu] and [Start] buttons in
this order. Then, press the [ ] button
four times to enter maintenance mode.
(2) "
  MAINTENANCE    " is displayed
on the LCD to indicate that the machine
has moved into the initial state of
maintenance mode. The machine is
ready to accept entry via the buttons.
(3) To select any of the maintenance mode
functions shown in the list on the next
page, use the keypad to enter the
maintenance mode function code to be
executed.
Touch panel models
(1) While the machine is in the ready state,
press the [Menu] and [*] buttons in this
order. Then, press the [2], [8], [6], and
[4] buttons in this order to enter
maintenance mode.
(2) "
  MAINTENANCE    " is displayed
on the LCD to indicate that the machine
has moved into the initial state of
maintenance mode. The machine is
ready to accept entry via the buttons.
(3) To select any of the maintenance mode
functions shown in the list on the next
page, use the keypad to enter the
maintenance mode function code to be
executed.

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