Brother MFC-9840CDW Service Manual

Confidential
5-33
1.4.23 Operational Check of Fans (Function code 78)
<Function>
This function is to check whether each of fans is operating correctly or not. The following fans
are checked.
LCD Parts Name Description
FU Fuser unit fan Evacuate hot air of the fuser unit.
OPC Drum unit fan Evacuate hot air of the drum unit drive motor.
PS LVPS fan Evacuate hot air of the LVPS unit.
AIR Air intake fan Intake air to prevent a dirt on the corona wire.
<Operating Procedure>
(1) Press the 7 and 8 buttons in this order in the initial stage of the maintenance mode. The
indication will appear on the LCD as shown in the figure below.
Fig. 5-18
(2) Press the Black Start button so that the LCD indication is changed in the order shown in
the figure above. The fan operation is also changed as indicated on the LCD.
(3) Press the Stop/Exit button so that the machine stops checking the fans, beeps for one
second and returns to the initial stage of the maintenance mode.
Note:
If the air intake fan (AIR) error occurs, the following error message appears on the LCD.
If you press the Stop/Exit button, the machine returns to the initial stage of the maintenance
mode without recovering from this error. To recover from this error, turn the power switch of the
machine off and then turn it on again.
Fig. 5-19

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