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Brother DCP-B7500D Service Manual

Brother DCP-B7500D
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2-73
Confidential
4.2 Troubleshooting for 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.
4.2.1 No paper feeding from paper tray
<User Check>
Check that the paper is set in the paper tray correctly.
Check that there is not too much paper set in the paper tray.
Flip over the paper in the paper tray or rotate the paper 180°.
Check that the thickness of the paper is 60 to 163 g/m
2
.
Check that the MP tray is not set as the paper tray.
Flip through the paper and reset it in the paper tray.
Clean the paper pick up roller.
Fig. 2-14
Step Cause Remedy
1
Dirt on the paper dust cleaning roller of
the paper tray
Refer to the figure below to clean the paper dust
cleaning roller and inside of the paper dust
cleaning roller cover.
2
T1 roller holder ASSY attachment failure
Reattach the T1 roller holder ASSY correctly.
3
Connection failure of the paper feed
motor flat cable
Reconnect the paper feed motor flat cable.
4
Connection failure of the T1 paper feed
sensor harness
(non paper empty sensor models only)
Reconnect the T1 paper feed sensor harness.
5
Connection failure of the T1 clutch harness
Reconnect the T1 clutch harness.
6
Connection failure of the T1 paper
empty/paper feed sensor harness
(paper empty sensor models only)
Reconnect the T1 paper empty/paper feed sensor
harness.
7
T1 paper empty actuator coming off Reattach the T1 paper empty actuator.
8
Abrasion of the paper pick up roller Replace the PF kit 1.
9
T1 paper feed sensor failure
(non paper empty sensor models only)
Replace the T1 paper feed sensor PCB ASSY.
10
T1 paper empty sensor failure
(paper empty sensor models only)
Replace the T1 paper empty/paper feed sensor
PCB ASSY.
11
Paper feed motor flat cable failure Replace the paper feed motor flat cable.
12
Paper feed motor failure Replace the paper feed motor.
13
Damaged gears in the paper feed drive
system
Replace the frame L unit.
14
Damaged fuser unit Replace the fuser unit.
15
Main PCB failure Replace the main PCB ASSY.
Paper dust cleaning roller
Paper dust cleaning roller cover
Hooks
<Front side>

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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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