Brother DCP-8250DN Service Manual

2-80
Confidential
 Black horizontal stripes
Fig. 2-13
Diameter of rollers and pitch which appears in the image
<User Check>
- Clean inside the machine and the corona wire of the drum unit.
- The tray earth spring on the machine side may be dirty. Clean it with
a dry cloth.
- This problem may disappear after printing multiple sheets of paper.
- When the horizontal stripes appear at intervals of 45.3 mm, replace
the toner cartridge with a new one.
- When the horizontal stripes appear at intervals of 94.2 mm, replace
the drum unit with a new one.
Step Cause Remedy
1
Dirt on 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. 2-10 or Fig. 2-11.)
2
Dirt on 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. 2-10 or Fig. 2-11.)
3
Earth wires or earth plate attachment
failure (not grounded correctly)
Retighten the screws to secure the earth
wires or earth plate.
4 Tray earth spring is bent. Replace the paper tray.
5
Scratches or dirt on the heat unit
(horizontal stripes at intervals of 104 mm)
Replace the fuser unit.
6
High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
CAUTION:
• Image defects which appear periodically may be caused by failure of rollers. Refer to
the table below and determine the cause based on the diameter of the rollers or the
pitch at which defects appear in the image.
No. Part name Diameter
Pitch at which defects
appear in the image
1 Developer roller ø 20 mm 45.3 mm
2 Exposure drum ø 30 mm 94.2 mm
3 Heat unit in the fuser unit
- 104 mm
4 Pressure roller in the fuser unit ø 30 mm 94.2 mm
Tray earth spring
Bottom surface of Paper tray

Brother DCP-8250DN Specifications

General

Secure printing	Yes
Print technology	Laser
Maximum resolution	1200 x 1200 DPI
Duplex printing mode	Auto
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	40 ppm
Duplex print speed (black, normal quality, A4/US Letter)	9 ppm
PictBridge	No
Scan speed	2.68 sec/page
Dimensions (WxDxH)	491 x 415 x 477 mm
All-in-one functions	Copy, Print, Scan
Networking standards	IEEE 802.11b, IEEE 802.11g
Color all-in-one functions	Scan
Printing colors	Black
Maximum duty cycle	- pages per month
Recommended duty cycle	1000 - 5000 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)	40 cpm
Scan to	E-mail, E-mail Server, File, FTP, Image, OCR, USB
Scan drivers	ISIS, TWAIN, WIA
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
Paper input type	Paper tray
Total input capacity	500 sheets
Total output capacity	150 sheets
Maximum input capacity	1050 sheets
Maximum number of input trays	2
Auto document feeder (ADF) 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	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	Business cards, 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	TFT
Control type	Touch
Display diagonal	4.9 \
Market positioning	Business
Standard interfaces	Ethernet, USB 2.0
Security algorithms	128-bit WEP, 64-bit WEP, 802.1x RADIUS, EAP, EAP-TLS, EAP-TTLS, MD5, PEAP, SSL/TLS, TKIP, WPA-AES, WPA-PSK, WPA2-PSK
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)	0.45 W
Power consumption (standby)	9.8 W
Power consumption (PowerSave)	350 W
Power consumption (average operating)	694 W
Package weight	21.900 g
Sustainability certificates	ENERGY STAR