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Brother DCP-B7500D Service Manual

Brother DCP-B7500D
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2-84
Confidential
4.3.2 Troubleshooting image defect
Image defect related problems 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.
Light
Electrodes location of the toner cartridge
Fig. 2-16
<User Check>
Check the usage environment of the machine. Using the machine in
hot-humid or cold-dry conditions can cause this problem.
If the whole page is light, toner save mode may be ON. Turn OFF the
toner save mode.
Replace the drum unit with a new one.
Replace the toner cartridge with a new one.
Turn ON the power switch, and leave the machine for a while
(condensation).
Check if paper is not damp.
Use specified paper.
Step Cause Remedy
1
Dirt on the 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. 2-12 (P2-
56) and Fig. 2-13 (P2-56).)
2
Dirt on the electrodes of the
toner cartridge and those of
the machine
Clean the electrodes of the toner cartridge,
process unit and those of the machine.
(Refer to Fig. 2-12 (P2-56), below and Fig. 2-
17 (P2-85).)
3
Dirt on the electrodes of the
high-voltage power supply
PCB and those of the
machine
Clean the electrodes of the high-voltage
power supply PCB and those of the machine.
4 Fuser unit failure Replace the fuser unit.
5
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
6 Main PCB failure Replace the main PCB ASSY.

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Brother DCP-B7500D Specifications

General IconGeneral
Duplex printingYes
Print technologyLaser
Maximum resolution2400 x 600 DPI
Duplex printing modeAuto
Time to first page (black, normal)8.5 s
Print speed (black, normal quality, A4/US Letter)34 ppm
Printing colorsBlack
Duplex functionsPrint
Maximum duty cycle15000 pages per month
Number of print cartridges1
Page description languagesBR-Script 3, PCL 6, PDF 1.7
Copier resize25 - 400 %
Duplex copying-
Maximum copy resolution600 x 600 DPI
Maximum number of copies99 copies
Scan toE-mail, File, Image
Input color depth30 bit
Output color depth24 bit
Input grayscale depth10 bit
Output grayscale depth8 bit
Optical scanning resolution1200 x 1200 DPI
FaxingNo
Total input capacity250 sheets
Total output capacity120 sheets
Paper tray media typesPlain paper, Recycled paper, Thin paper
Paper tray media weight60 - 230 g/m²
Non-ISO print media sizesExecutive (184 x 267mm), Folio (media size), Legal (media size)
ISO A-series sizes (A0...A9)A4, A5, A6
Maximum ISO A-series paper sizeA4
USB 2.0 ports quantityUSB 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 colorGray
Market positioningHome & office
Mac operating systems supportedMac 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 supportedWindows 10, Windows 7, Windows 8, Windows 8.1
AC input voltage220 - 240 V
AC input frequency50 - 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 IconWeight and Dimensions
Depth398.5 mm
Width410 mm
Height272 mm

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