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Brother MFC-9420CN Service Manual

Brother MFC-9420CN
428 pages
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Confidential
5-4
Disassembly Flowchart
5.1.1
5.1.2
5.1.3
AC Cord
OPC Belt cartridge
Paper Tray
5.1.12
Panel
5.1.61
Transfer Base ASSY PU
5.1.5
Side Cover LR
5.1.4
Fusing Unit
5.1.6
Top Side L
5.1.9
Pull Arm/Scanner Slider L, R
Basic Operation
Disassembly
/ Re-Assembly (second)
5s / 5s
10s / 10s 5s / 5s
30s / 30s
5.1.17
Cleaning Roller Cover PU /
Cleaning Roller PU
15s / 15s
5.1.59
Paper Exit Unit
30s / 50s
5.1.49
Scanner Door Sensor
10s / 10s
20s / 10s
45s / 60s
30s / 30s
5.1.67
Fuser Exit Actuator PU
5s / 5s
5.1.68
Paper Sensor (PT2)
5s / 5s
5.1.69
Discharging Brush PU
20s / 20s
5.1.70
Back Cover Latch ASSY PU
20s / 20s
5.1.71
Transfer Roller Guide PU
20s / 20s
5.1.66
Exit Roller ASSY PU /
Paper Exit Actuator PU
45s / 50s
5.1.64
Exit Guide ASSY PU /
Exit Drive ASSY PU /
Exit Idle Roller ASSY PU
25s / 30s
5.1.10
IS Lock Lever ASSY
10s / 10s
5.1.11
Tray (TP)
5s / 5s
15s / 15s
5.1.60
Transfer Roller ASSY PU
5s / 5s
5.1.16
Top Side R
5s / 5s
5.1.44
Inner Front Cover PU /
Front Cover PU
30s / 30s
25s / 30s
5.1.48
Speaker
15s / 15s
Transfer unit PU
50s / 50s
5.1.65
Paper Sensor (PFUL)
5s / 5s
5.1.72
Paper Guide (A) PU
15s / 15s
5.1.73
Paper Guide (B) PU
15s / 15s
5.1.75
Paper Guide (D) PU
10s / 10s
5.1.74
Paper Guide (C) PU /
Paper Sensor (PT1, PEU) /
OHP Sensor PU /
Tray Empty Actuator PU
50s / 60s
5.1.62
Registration Roller ASSY PU
30s / 30s
5.1.63
Registration Actuator PU
5s / 5s
5.1.76
Paper Feed Roller /
Separator Pad
20s / 20s
5.1.47
Power Supply Fan PU /
Interlock Switch PU (Top, Paper Exit) /
Power Supply Fan Duct PU
40s / 50s
5.1.46
Engine Control Board PU
45s / 50s
5.1.50
HV Power Supply PU
60s / 60s
5.1.52
Fuser Connector PU
80s / 80s
5.1.53
Toner Retract Solenoid PU
(DESLY/DESLM/DESLC/DESLK)
/ Toner Retract Cam PU
40s / 40s
5.1.51
LV Power Supply PU /
Power Supply Bracket PU ASSY
5.1.58
Left Toner Guide PU
55s / 60s
10s / 10s
5.1.57
Left Tray Guide PU /
Paper Size Sensor PU /
Room Temp Thermistor PU
50s / 55s
5.1.54
Toner Sensor PU (TTR)
15s / 15s
5.1.55
Toner Present Sensor PU
15s / 15s
5.1.56
Belt Sensor
10s / 10s
5.1.13
Battery ASSY
10s / 10s
5.1.14
Main PCB
30s / 30s
5.1.15
NCU PCB ASSY
30s / 30s
5.1.7
ADF Unit
35s / 55s
5.1.8
Scanner Unit
45s / 50s
5.1.20
Right Side Cover PU
25s / 25s
5.1.21
Side Cover LF
15s / 15s
5.1.28
Cleaning Roller Clutch PU
20s / 20s
5.1.18
Top Cover
45s / 45s
5.1.19
Center Cover
10s / 10s
5.1.22
Interlock Switch PU (Front)
10s / 10s
5.1.23
Waste Toner Auger PU
10s / 10s
5.1.24
Waste Toner Agitator PU
10s / 10s
5.1.25
Erase Lamp PU
60s / 60s
5.1.26
Marker Sensor
10s / 10s
5.1.27
Toner Density Sensor PU
10s / 10s
5.1.29
Main Motor PU
70s / 90s
5.1.30
Fuser Clutch PU
10s / 10s
5.1.31
TR Cam Clutch
10s / 10s
5.1.32
Registration Clutch PU
10s / 10s
5.1.33
Paper Feed Clutch PU
10s / 10s
5.1.34
Developer Motor PU
5.1.36
Developer Clutch PU
(DCLY/DCLM/DCLC/DCLK)
15s / 20s
5.1.40
Waste Toner Feeder PU
25s / 25s
5.1.42
Right Toner Guide PU
10s / 10s
5.1.43
Laser ASSY PU /
Laser Unit Fan ASSY PU
30s / 35s
5.1.35
Waste Toner Holder ASSY PU
30s / 45s
5.1.41
Toner Sensor PU (TPD)
15s / 15s
5.1.45
Right Tray Guide PU
10s / 15s
5.1.37
Developer Gear PU /
Developer Drive ASSY PU
40s / 40s
5.1.38
OPC Drive Gear ASSY PU
15s / 15s
5.1.39
Main Drive Gear ASSY PU
45s / 50s
40s / 40s

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Brother MFC-9420CN Specifications

General IconGeneral
Print technologyLaser
Maximum resolution1200 x 2400 DPI
Economical printingYes
Print speed (black, normal quality, A4/US Letter)31 ppm
Print speed (color, normal quality, A4/US Letter)8 ppm
Digital senderNo
Number of print cartridges4
Scanner typeFlatbed scanner
Scanner featuresScan to: e-mail, image, OCR, file
Copier resize25 - 400 %
Maximum copy resolution600 x 600 DPI
Maximum number of copies99 copies
Copy speed (black, normal quality, A4)31 cpm
Copy speed (color, normal quality, A4)8 cpm
FaxingColor faxing
Fax memory500 pages
Modem speed33.6 Kbit/s
Fax speed dialing (max numbers)200
Total input capacity750 sheets
Maximum input capacity250 sheets
Auto document feeder (ADF) input capacity35 sheets
Maximum internal memory576 MB
Bundled softwareScanSoft PaperPort Presto! PageManager
I/O portsIEEE-1284 USB 2.0
Dimensions (WxDxH)483.5 x 514 x 530 mm
Printer managementBRAdmin Professional, MIB-II
Networking features10Base-T/100Base-TX
All-in-one functionsFax, Scan
Color all-in-one functionscopy, fax, print, scan
Compatible operating systemsWindows 98(SE)/ Me/ NT WorkStation 4.0/ 2000 Professional/ XP Mac OS 9.1 - 9.2, Mac OS X 10.2.4+
Sustainability certificatesENERGY STAR
Power consumption (standby)85 W
Power consumption (PowerSave)16 W
Power consumption (average operating)1090 W
Operating temperature (T-T)10 - 32 °C
Operating relative humidity (H-H)20 - 80 %
Market positioningBusiness

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