Brother DCP-8250DN Service Manual

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Confidential
4.3.2 Troubleshooting according to image defect
End users can solve problems related to image defects as long as they follow the User
Check items. If the problem still cannot be solved, implement each procedure according to
the step number in the tables below.
 Light
<User Check>
- Check the usage environment of the machine. Using the machine in
high temperature and humidity or low temperature and humidity
conditions can cause this problem.
- If the whole page is light, toner save mode may be ON. Turn OFF
the toner save mode.
- Adjust the density using the Density Adjustment.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Step Cause Remedy
1
Dirt on electrodes of the drum unit Clean the electrodes of the drum unit and
those of the machine. (Refer to Fig. 2-10 or
Fig. 2-11.)
2
Toner volume determination failure
when a new toner cartridge is
detected
Reset the developer roller counter. (Refer to
"2.4 Reset Developer Roller Counter" in
Chapter 5.)
3
Connection failure of the develop
clutch 51R harness
Reconnect the develop clutch 51R harness.
4 Develop clutch 51R failure Replace the develop clutch 51R.
5 Fuser unit failure Replace the fuser unit.
6
High-voltage power supply PCB
failure
Replace the high-voltage power supply PCB
ASSY.
7 Laser unit failure Replace the laser unit.
8 Main PCB failure Replace the main PCB ASSY.

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