Brother DCP-B7500D Service Manual

2-49
Confidential
 Error code 0501
The center thermistor of the fuser unit has not reached the specified temperature within the
specified time.
Error code 0502
The center thermistor of the fuser unit has not reached the specified temperature within the
specified time after it was heated normally to the certain level.
Error code 0503
The center thermistor of the fuser unit detected a temperature higher than the specified value.
Error code 0504
After the heat unit was heated normally, the center thermistor of the fuser unit detected a
temperature lower than the specified value.
Error code 0505
The center thermistor of the fuser unit detected a temperature rise greater than the specified
value within the specified time.
Error code 0506
The center thermistor of the fuser unit detected a temperature fall greater than the specified
value within the specified time.
Error code 0508
Temperature of the end part didn’t rise by 1 °C when the fuser unit heater was turned ON.
Error code 050A
The hardware detected a temperature error through the center thermistor or the side
thermistor of the fuser unit.
Error code 050B
When the center thermistor of the fuser unit was lower than the idle temperature, the side
thermistor detected a temperature higher than the specified temperature.
Error code 050C
When the center thermistor of the fuser unit was higher than the idle temperature, the side
thermistor detected a temperature lower than the specified temperature.
<User Check>
• Turn OFF the power switch. After several seconds, turn ON the power again and check that
this error is reset.
Step Cause Remedy
1
Connection failure of the center
or side thermistor harness of the
fuser unit
Reconnect the center or side thermistor
harness of the fuser unit.
2
Connection failure of the heater
harness of the fuser unit
Reconnect the heater harness of the fuser
unit.
3
Connection failure of the eject
sensor PCB harness
Reconnect the eject sensor PCB harness.
4
Connection failure of the
low-
voltage power supply PCB harness
Reconnect the low-voltage power supply
PCB harness.
5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
6 Fuser unit failure Replace the fuser unit.
7
Low-voltage power supply PCB
failure
Replace the low-voltage power supply
PCB ASSY.
8 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