Brother DCP 8085DN Service Manual

3-40
Confidential
4. PAPER FEEDING PROBLEMS
Problems related to paper feeding are end user recoverable if following the User Check
items. If the same problem occurs again, follow each procedure in the order of the number
described in the Step column in the tables below.
4.1 No Feeding
4.2 Double Feeding
Step Cause Check Result Remedy
1
Dirt on PE sensor Is there paper powder in
the PE sensor?
Yes
Clean the PE sensnor.
2
Edge actuator
catching on some
position
Does the edge actuator
move smoothly? No
Re-assembly the edge
actuator.
3
Roller holder
ASSY catching on
some position
Does the roller holder
ASSY move smoothly? Yes
Re-assembly the roller
holder ASSY.
4
Registration front
sensor failure
Is the problem solved
after replacing the
registration front sensor
PCB ASSY?
Yes
Replace the registration
front sensor PCB ASSY.
5
Separation pad or
roller holder ASSY
failure
Is the surface of the
separation pad or the
pickup roller dirty or worn
out?
Yes
1) Clean the surface of
the separation pad or
pickup roller.
2) Replace the separation
pad or pickup roller.
6
Pressure plate
gear damage
Is the pressure plate gear
damaged?
Yes
Replace the paper tray.
7
T1 solenoid failure Does the T1 solenoid
work correctly?
No
Replace the T1 solenoid.
8
T1 solenoid
pathway of the
high-voltage
power supply PCB
broken
Is the problem solved
after replacing the high-
voltage power supply
PCB ASSY?
Yes
Replace the high-voltage
power supply PCB ASSY.
9
Main PCB failure Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.
10
Main motor failure Is the problem solved
after replacing the drive
sub ASSY?
Yes
Replace the drive sub
ASSY.
Step Cause Check
Result Remedy
1
Separation pad or
roller holder ASSY
failure
Is the surface of the
separation pad worn out? Yes
Replace the PF kit.

Brother DCP 8085DN Specifications

General

Print technology	Laser
Maximum resolution	1200 x 1200 DPI
Economical printing	Yes
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	30 ppm
Scan to	CIFS, E-mail, FTP, Image, OCR, USB
Scanner type	Flatbed scanner
Grayscale levels	256
Input color depth	48 bit
Output color depth	24 bit
Image formats supported	BMP, JPG
Maximum scan resolution	19200 x 19200 DPI
Optical scanning resolution	600 x 2400 DPI
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
N-in-1 copy function (N=)	2
Copy speed (black, normal quality, A4)	30 cpm
Total input capacity	250 sheets
Total output capacity	150 sheets
Auto document feeder (ADF) input capacity	50 sheets
Internal memory	64 MB
Maximum internal memory	576 MB
Sound power level (standby)	30 dB
Sound pressure level (printing)	56 dB
Display	TFT
Market positioning	Business
Maximum print size	216 x 356 mm
Media weight (tray 1)	60 - 105 g/m²
Paper tray media types	Bond paper, Envelopes, Labels, Plain paper, Transparencies
Non-ISO print media sizes	Executive
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5, B6
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 163 g/m²
Dimensions (WxDxH)	531 x 451 x 475 mm
All-in-one functions	Copy, Scan
Compatible operating systems	Windows 2000 Professional, XP Home Edition, XP Professional Edition, XP professional x64 Edition, Vista Mac OS X 10.3.9 + Linux
Supported network protocols (IPv4)	ARP, RARP, BOOTP, DHCP, APIPA(Auto IP), WINS/NetBIOS name resolution, DNS Resolver, mDNS, LLMNR responder, LPR/LPD, Custom Raw Port/Port9100, IPP/IPPS, FTP Client and Server, TELNET Server, HTTP/HTTPS server, SSL/TLS, TFTP client and server, SMTP Client, APOP, POP before SMTP, SMTP-AUTH, SNMPv1/v2c/v3, ICMP, LLTD responder, Web Services (Print), CIFS Client, SNTP
Supported network protocols (IPv6)	NDP, RA, DNS resolver, mDNS, LLMNR responder, LPR/LPD, Custom Raw Port/Port9100, IPP/IPPS, FTP Client and Server, TELNET Server, HTTP/HTTPS server, SSL/TLS, TFTP client and server, SMTP Client, APOP, POP before SMTP, SMTP-AUTH, SNMPv1/v2c/v3, ICMPv6, LLTD responder, Web Services (Print), CIFS Client, SNTP
Standard interfaces	Ethernet, Parallel, USB 2.0
USB 2.0 ports quantity	1
Bundled software	Brother MFL-pro suite in Windows: BrotherControlCentre 3 Scansoft Paperport 11SE + OCR, Macintosh:BrotherControlCentre 2 Newsoft Presto! Page manager 7
Power consumption (standby)	85 W
Power consumption (PowerSave)	16 W
Power consumption (average operating)	680 W
Package weight	21800 g
Maximum duty cycle	30000 pages per month
Page description languages	BR-Script 3, Epson FX, IBM ProPrinter, PCL 6