Brother DCP-B7500D Service Manual

2-61
Confidential
 Error code 8903
The back cover sensor detected the open state when 2-sided printing is started (before the
registration of printing in the engine).
Error code 8904
The back cover sensor detected the open state during 2-sided printing (after the registration of
printing in the engine).
<User Check>
• Close the back cover correctly.
• Check that the duplex tray is set correctly.
 Error code 8A01
The registration rear sensor detected that the paper fed was smaller or larger than the
specified size in duplex printing mode.
<User Check>
• Use appropriate paper (Letter to Legal).
 Error code 8C00
There is no paper set in the manual feed slot on the manual feed slot printing.
<User Check>
• Set the paper in the manual feed slot.
Step Cause Remedy
1 Duplex tray is not set correctly Reattach the duplex tray correctly.
2
Back cover sensor attachment failure Reattach the back cover sensor.
3
Breakage of boss that presses
the back cover sensor
Replace the back cover.
4
Guide which pushes the back cover
sensor of the duplex tray is faulty
Replace the duplex tray.
5 Back cover sensor failure Replace the eject sensor PCB ASSY.
6 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1
Registration rear actuator caught
in some sections of the machine
Reattach the registration rear actuator.
2 Registration rear sensor failure Replace the actuator holder ASSY.
3 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1
Registration front actuator caught
in some sections of the machine
Reattach the registration front actuator.
2
Connection failure of the
registration front/rear sensor
PCB harness
Reconnect the registration front/rear
sensor PCB harness.
3 Registration front sensor failure Replace the actuator holder ASSY.
4 Main PCB failure Replace the main PCB ASSY.

Brother DCP-B7500D Specifications

General

Duplex printing	Yes
Print technology	Laser
Maximum resolution	2400 x 600 DPI
Duplex printing mode	Auto
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	34 ppm
Printing colors	Black
Duplex functions	Print
Maximum duty cycle	15000 pages per month
Number of print cartridges	1
Page description languages	BR-Script 3, PCL 6, PDF 1.7
Copier resize	25 - 400 %
Duplex copying	-
Maximum copy resolution	600 x 600 DPI
Maximum number of copies	99 copies
Scan to	E-mail, File, Image
Input color depth	30 bit
Output color depth	24 bit
Input grayscale depth	10 bit
Output grayscale depth	8 bit
Optical scanning resolution	1200 x 1200 DPI
Faxing	No
Total input capacity	250 sheets
Total output capacity	120 sheets
Paper tray media types	Plain paper, Recycled paper, Thin paper
Paper tray media weight	60 - 230 g/m²
Non-ISO print media sizes	Executive (184 x 267mm), Folio (media size), Legal (media size)
ISO A-series sizes (A0...A9)	A4, A5, A6
Maximum ISO A-series paper size	A4
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Product color	Gray
Market positioning	Home & office
Mac operating systems supported	Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, Mac OS X 10.14 Mojave, Mac OS X 10.15 Catalina, Mac OS X 10.15.3 Catalina, Mac OS X 10.2 Jaguar, Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks, Mac OS X 11.0 Big Sur
Windows operating systems supported	Windows 10, Windows 7, Windows 8, Windows 8.1
AC input voltage	220 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (off)	0.03 W
Power consumption (ready)	42 W
Power consumption (sleep)	6.2 W
Power consumption (printing)	485 W

Weight and Dimensions

Depth	398.5 mm
Width	410 mm
Height	272 mm