Brother MFC-9840CDW Service Manual

Confidential
1-23
Error code 84 (Jam Rear)
Jam Rear
Open the Back Cover and remove the jammed paper.
Paper jam rear side of the machine
Error code 88 (Jam Inside)
Jam Inside
Open the Front Cover, pull out the Drum Unit completely and remove
the jammed paper.
Paper jam inside the machine
User Check
- Check if the paper is jammed. If jammed, remove it.
Step Cause
Remedy
1 Harness connection failure of
registration front sensor PCB
ASSY, registration rear
sensor PCB ASSY or paper
eject sensor PCB ASSY
Check the harness connections of the registration
front sensor PCB ASSY, registration rear sensor
PCB ASSY and paper eject sensor PCB ASSY,
and reconnect them.
2 Registration front actuator,
registration rear actuator or
paper eject actuator not
operating smoothly or
catching in some position.
Correct smooth operation of the registration front
actuator, registration rear actuator or paper eject
actuator and ensure they are not catching in any
positions.
3a Paper eject sensor PCB
failure
Check the sensor performance following the
procedure described in “Maintenance mode 32”. If
any problem occurs, replace the fuser unit.
(MP/ T1) Check the sensor performance following
the procedure described in “Maintenance mode
32”. If any problem occurs, replace the front door
unit ASSY.
3b Registration front sensor PCB
failure (MP/ T1/ LT)
(LT) Check the sensor performance following the
procedure described in “Maintenance mode 32”. If
any problem occurs, replace the LT paper feed
frame unit.
3c Registration rear sensor PCB
failure
Check the sensor performance following the
procedure described in “Maintenance mode 32”. If any
problem occurs, replace the front door unit ASSY.
4 Engine PCB failure Replace the engine PCB ASSY.

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