Brother MFC-9840CDW Service Manual

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8.31 Front Door Unit ASSY .................................................................................................. 3-142
8.32 Harness Cover MP....................................................................................................... 3-145
8.33 Front Door Sub............................................................................................................. 3-146
8.34 EL Electrode Spring L/R............................................................................................... 3-147
8.35 Hook Cover/ Front Cover Release Button/ Button Spring/ Front Door Main ............... 3-148
8.36 Hook Shaft/ Hook/ Hook Spring ................................................................................... 3-150
8.37 Engine PCB ASSY ....................................................................................................... 3-151
8.38 Main PCB ASSY/ Ground Plate/ Ground Spring Plate ................................................ 3-152
8.39 Waste Toner Near/Full Sensor ASSY.......................................................................... 3-154
8.40 Laser Unit/ Hook Slope ................................................................................................ 3-156
8.41 Develop Drive Motor ASSY.......................................................................................... 3-158
8.42 Drum Drive ASSY/ Drum Phase Sensor PCB ASSY 1, 2............................................ 3-163
8.43 Drive Frame Unit ASSY ............................................................................................... 3-167
8.44 Paper Feed/Belt Cleaner Motor ASSY......................................................................... 3-168
8.45 Develop Release Sensor PCB ASSY .......................................................................... 3-169
8.46 Develop Press Drive L ASSY....................................................................................... 3-169
8.47 Front Cover Interlock Switch ASSY ............................................................................. 3-172
8.48 Toner Sensor PCB ASSY K, Y, M, C (TE/NEW) ......................................................... 3-173
8.49 New Toner Actuator/ New Toner Actuator Spring ....................................................... 3-177
8.50 Side Plate R ASSY....................................................................................................... 3-178
8.51 Drum Lock Lever L....................................................................................................... 3-179
8.52 Drum Lock Lever R ...................................................................................................... 3-180
8.53 Charge HVPS PCB ASSY............................................................................................ 3-181
8.54 Toner LED PCB ASSY................................................................................................. 3-183
8.55 Fuser Unit Fan (FU) ..................................................................................................... 3-184
8.56 LVPS Fan (PS)............................................................................................................. 3-184
8.57 Air Intake Fan (AIR) ..................................................................................................... 3-185
8.58 PS PCB Unit................................................................................................................. 3-186
8.59 Belt Unit Drive Motor ASSY ......................................................................................... 3-190
9. DISASSEMBLY PROCEDURE (LT-100CL) ............................................................3-193
9.1 LT Paper Tray ................................................................................................................ 3-193
9.2 LT Cover Rear................................................................................................................ 3-197
9.3 LT Cover Left.................................................................................................................. 3-198
9.4 LT Cover Right ............................................................................................................... 3-199
9.5 LT Relay PCB ASSY ...................................................................................................... 3-200
9.6 LT Solenoid ASSY.......................................................................................................... 3-201
9.7 Collar 6 ........................................................................................................................... 3-202
9.8 Cassette Switch ASSY ................................................................................................... 3-202
9.9 LT Paper Feed Frame Unit ............................................................................................ 3-204

Brother MFC-9840CDW Specifications

General

Print technology	Laser
Maximum resolution	600 x 2400 DPI
Economical printing	Yes
Time to first page (black, normal)	16 s
Time to first page (color, normal)	17 s
Print speed (black, normal quality, A4/US Letter)	20 ppm
Scan to	E-mail, FTP, OCR, USB
Scanner type	Flatbed scanner
Grayscale levels	256
Input color depth	48 bit
Maximum scan resolution	19200 x 19200 DPI
Optical scanning resolution	1200 x 2400 DPI
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
N-in-1 copy function (N=)	4, 9, 16, 25
Copy speed (black, normal quality, A4)	16 cpm
Faxing	Mono faxing
Fax memory	400 pages
Modem speed	33.6 Kbit/s
Fax speed dialing (max numbers)	300
Total input capacity	250 sheets
Total output capacity	150 sheets
Multi-Purpose tray input capacity	50 sheets
Auto document feeder (ADF) input capacity	35 sheets
Internal memory	128 MB
Sound power level (standby)	30 dB
Sound pressure level (printing)	54.5 dB
Custom media sizes	(69.9 - 216mm) - (116 - 406.4mm)
Dimensions (WxDxH)	530 x 539 x 520 mm
Networking features	10/100Base-TX
Wireless technology	IEEE 802.11b/g
All-in-one functions	Copy, Fax, Scan
Maximum internal memory	0.640 GB
Color all-in-one functions	copy, print, scan
Media weight (tray 1)	60 - 105g/m2
Paper tray media types	Bond paper, Envelopes, Labels, Plain paper, Recycled paper
Non-ISO print media sizes	Executive (184 x 267mm), Folio (media size), Legal (media size), Letter (media size)
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5, B6
JIS B-series sizes (B0...B9)	B5
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 163 g/m²
Security algorithms	LEAP
Supported network protocols (IPv4)	TCP/IP (IPv4 & IPv6)
Standard interfaces	USB 2.0
USB 2.0 ports quantity	1
Bundled software	ScanSoft PaperPort (Win) NewSoft Presto! PageManager (Mac)
Power consumption (PowerSave)	36 W
Power consumption (average operating)	515, 100 W
Package weight	45800 g
Digital sender	No
Maximum duty cycle	3000 pages per month
Market positioning	Business