Brother MFC-9840CDW Service Manual

Confidential
5-30
1.4.21 Sensitivity Adjustment of Registration-mark Sensor (Function code 75)
<Function>
This function makes the registration-mark sensor to adjust its sensitivity compulsory. This
function makes the machine to check the surface of the belt unit by using the registration-mark
sensor as well.
LCD Description
1
REGI_SENS ADJUST
BELT OFF
Adjust the sensitivity of the registration-mark sensor when the
belt unit is not operated. This is to check whether the
registration-mark sensor’s operation is okay or not.
2
REGI_SENS ADJUST
BELT ON
Adjust the sensitivity of the registration-mark sensor when the
belt unit is operated. (This adjustment is the same as the
operation before the color registration.)
3
REGI_SENS ADJUST
BELT CHECK
Check whether there is no scratch on the surface of the belt
unit within the detectable range of registration-mark sensor.
<Operating Procedure>
(1) Press the 7 and 5 buttons in this order in the initial stage of the maintenance mode.
“REGI SENS ADJUST” appears on the LCD.
(2) Press the
or
button to select the appropriate term.
(3) Press the OK button so that the selected operation is carried out.
Note:
- If you press the OK button during the sensitivity adjustment or after the error message
appears on the LCD, the sensitivity adjustment is started again.
- In the case that the error occurs, refer to the next page to check the error description and
the way to solve it.
(4) Upon completion of the above operation, the machine beeps for one second and returns
to the initial stage of the maintenance mode.

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