Brother MFC 9840CDW User Manual

							Options
109
B
gPlug the machine’s power cord back into 
the AC electrical socket first, and 
reconnect all cables and telephone line 
cord.
Turn on the machine’s power switch.
hTo set the paper size for the lower tray, 
press Menu, 1, 3, 3. Press a or b to 
choose A4, Letter, Legal, 
Executive, A5, B5, B6 or Folio. 
Press OK, and then press Stop/Exit.
iFor Windows® users:
Go to Start > Control Panel > Printers 
and Faxes. Right-click on your printer 
icon and choose Properties. Choose 
the Accessories tab and click Auto 
Detect. When the optional lower tray 
and paper size have been detected click 
Apply.
 
Note
The Auto Detect function is not available 
under the following machine conditions: 
• The machine’s power switch is off.
• The machine is in an error state.
• The machine is in a network shared 
environment.
• The cable is not connected to the 
machine correctly.
If this situation occurs, you can manually 
add the options you have installed. In 
Available Options select the option you 
have installed, click Add, and then click 
Apply.
 
For Macintosh® users:
The printer driver is already configured for 
use with the lower paper tray. No additional 
steps are required.
 
						

							110
Memory boardB
This machine has 128 MB of standard 
memory and one slot for optional memory 
expansion. You can expand the memory up 
to 640 MB by installing 144 pin small outline 
dual in-line memory modules (SO-DIMMs). 
When you add the optional memory, it 
increases the performance for both copy and 
print operations.
In general, the machine uses 
industry-standard SO-DIMM with the 
following specifications:
Type: 144 pin and 64 bit output
CAS latency: 2
Clock frequency: 100 MHz or more
Capacity: 64 MB, 128 MB, 256 MB or 512 MB
Height: 31.75 mm
Dram Type: SDRAM 2 Bank
For purchasing information and part numbers 
visit the Buffalo Technology website:
http://www.buffalo-technology.com/
Note
• There might be some SO-DIMMs that will 
not work with the machine.
• For more information, call the dealer you 
bought the machine from.
 
Installing extra memoryB
aTurn off the machine’s power switch. 
Unplug the telephone line cord.
bDisconnect the interface cable from the 
machine, and then unplug the power 
cord from the electrical socket.
cRemove the DIMM covers (1 and 2). 
dUnpack the DIMM and hold it by its 
edges.
CAUTION 
To prevent damage to the machine from 
static electricity, DO NOT touch the 
memory chips or the board surface.
 
eHold the DIMM by the edges and align 
the notches in the DIMM with the 
protrusions in the slot. Insert the DIMM 
diagonally (1), then tilt it toward the 
interface board until it clicks into 
place (2).
 
2
1
1
2
 
						

							Options
111
B
fPut the DIMM covers (2 and 1) back on. 
gPlug the machine’s power cord back into 
the electrical socket first, and then 
connect the interface cable. 
hPlug in the telephone line cord. Turn on 
the machine’s power switch.
Note
To make sure that you have installed the 
SO-DIMM properly, you can print the user 
settings page that shows the current 
memory size. (See Reportson page 76.)
 
2
1
 
						

							112
C
TroubleshootingC
If you think there is a problem with your machine, check the chart below and follow the 
troubleshooting tips.
Most problems can be easily resolved by yourself. If you need additional help, the Brother 
Solutions Center offers the latest FAQs and troubleshooting tips. Visit us at 
http://solutions.brother.com
.
Solutions to common problemsC
If you think there is a problem with the way your faxes look, make a copy first. If the copy looks 
good, the problem may not be your machine. Check the chart below and follow the troubleshooting 
tips.
Troubleshooting and routine 
maintenance
C
Printing or receiving faxes
DifficultiesSuggestions
„Condensed print
„Horizontal streaks
„Top and bottom sentences are 
cut off
„Missing linesUsually this is caused by a poor telephone connection. If your copy looks good, 
you probably had a bad connection, with static or interference on the telephone 
line. Ask the other party to send the fax again.
Poor print quality See Improving the print qualityon page 119.
Vertical black lines when receiving One of the corona wires for printing may be dirty. Clean the four corona wires. 
(See Cleaning the corona wireson page 155.)
The sender’s scanner may be dirty. Ask the sender to make a copy to see if the 
problem is with the sending machine. Try receiving from another fax machine. 
If the problem continues, call Brother or your dealer for service.
Received faxes appear as split or 
blank pages.If the received faxes are divided and printed on two pages or if you get an extra 
blank page, your paper size setting may not be correct for the paper you are using. 
(See Paper sizeon page 23.) 
Turn on auto reduction. (See Printing a reduced incoming faxon page 48.)
Telephone line or connections
DifficultiesSuggestions
Dialling does not work. Check for a dial tone.
Change Tone/Pulse setting. (See the Quick Setup Guide.)
Check all line cord connections.
Check that the machine is plugged in and switched on.
If an external telephone is connected to the machine, send a manual fax by lifting 
the handset of the external telephone and dialling the number. Wait to hear fax 
receiving tones before pressing Mono Start or Colour Start.
 
						

							Troubleshooting and routine maintenance
113
C
The machine does not answer 
when called.Make sure the machine is in the correct receive mode for your setup. (See 
Receiving a faxon page 44.) Check for a dial tone. If possible, call your machine 
to hear it answer. If there is still no answer, check the telephone line cord 
connection. If you do not hear ringing when you call your machine, ask your 
telephone company to check the line.
Sending faxes
DifficultiesSuggestions
Poor sending quality. Try changing your resolution to Fine or S.Fine. Make a copy to check your 
machine’s scanner operation. If the copy quality is not good, clean the scanner. 
(See Cleaning the scanneron page 150.)
Transmission Verification Report 
says ‘RESULT:ERROR’.There is probably temporary noise or static on the line. Try sending the fax again. 
If you are sending a PC Fax message and get ‘RESULT:NG’ on the Transmission 
Verification Report, your machine may be out of memory. To free up extra 
memory, you can turn off fax storage (see Turning off remote fax 
optionson page 67), print fax messages in memory (see Printing a fax from the 
memoryon page 49) or cancel a delayed fax or polling job (see Checking and 
cancelling waiting jobson page 43). If the problem continues, ask the telephone 
company to check your telephone line.
If you often get transmission errors due to possible interference on the telephone 
line, try changing the Compatibility setting to Basic(for VoIP). 
(See Telephone line interferenceon page 130.)
Vertical  black  lines  when  sending. Black vertical lines on faxes you send are typically caused by dirt or correction fluid 
on the glass strip. (See Cleaning the scanneron page 150.)
Handling incoming calls
DifficultiesSuggestions
The machine ‘Hears’ a voice as a 
CNG Tone.If Fax Detect is set to on, your machine is more sensitive to sounds. It may 
mistakenly interpret certain voices or music on the line as a fax machine calling 
and respond with fax receiving tones. Deactivate the machine by pressing 
Stop/Exit. Try avoiding this problem by turning Fax Detect to off. 
(See Fax Detecton page 47.)
Sending a Fax Call to the machine. If you answered on an external or extension telephone, press your Fax Receive 
Code [default setting is (l 51)]. When your machine answers, hang up.
Custom features on a single line. If you have Call Waiting, Call Waiting/Caller ID, Caller ID, Voice Mail, an 
answering machine, an alarm system or other custom feature on a single 
telephone line with your machine, it may create a problem sending or receiving 
faxes.
For Example: If you subscribe to Call Waiting or some other custom service and 
its signal comes through the line while your machine is sending or receiving a fax, 
the signal can temporarily interrupt or disrupt the faxes. Brother’s ECM feature 
should help overcome this problem. This condition is related to the telephone 
system industry and is common to all devices that send and receive information 
on a single, shared line with custom features. If avoiding a slight interruption is 
crucial to your business, a separate line with no custom features is recommended.
Telephone line or connections (continued)
DifficultiesSuggestions
 
						

							114
Menu access difficulties
DifficultiesSuggestions
Key  operations  do  not  work Check that the control panel is fitted correctly on the machine. Reinstall the control 
panel.
The machine beeps when you try to 
access the Setup Receive and 
Setup Send menus.If the Fax key is not illuminated, press it to turn on Fax mode. The Setup Receive 
setting (Menu, 2, 1) and Setup Send setting (Menu, 2, 2) are available only when 
the machine is in Fax mode.
Copy quality difficulties
DifficultiesSuggestions
Vertical black line appears in 
copies.Black vertical lines on copies are typically caused by dirt or correction fluid on the 
glass strip, or one of the corona wires for printing is dirty. (See Cleaning the 
scanneron page 150 and Cleaning the corona wireson page 155.)
Printing difficulties
DifficultiesSuggestions
No printout.„Check that the machine is plugged in and the power switch is turned on.
„Check that the toner cartridges and drum unit are installed properly. (See 
Replacing the drum uniton page 174.)
„Check the interface cable connection on both the machine and your computer. 
(See the Quick Setup Guide.)
„Check that the correct printer driver has been installed and chosen.
„Check to see if the LCD is showing an error message. (See Error and 
maintenance messageson page 131.)
„Check that the machine is online:
(For Windows Vista®
)
Click the Start button, Control Panel, Hardware and Sound, and then 
Printers. Right-click Brother MFC-9840CDW Printer. Make sure that Use 
Printer Offline is unchecked.
(For Windows
® XP and Windows Server® 2003)
Click the Start button and select Printers and Faxes.Right-click Brother 
MFC-9840CDW Printer. Make sure that Use Printer Offline is unchecked.
(For Windows
® 2000)
Click the Start button and select Settings and then Printers.Right-click 
Brother MFC-9840CDW Printer. Make sure that Use Printer Offline is 
unchecked.
The machine prints unexpectedly 
or it prints garbage.„Pull out the paper tray and wait until the machine stops printing. Then turn off 
the machine’s power switch and disconnect from the power for several 
minutes. (The machine can be turned off for up to 60 hours without losing 
faxes stored in the memory.)
„Check the settings in your application to make sure it is set up to work with 
your machine.
The machine prints the first couple 
of pages correctly, then some 
pages have text missing.„Check the settings in your application to make sure that it is set up to work with 
your machine.
„Your computer is not recognising the machine’s input buffer’s full signal. Make 
sure that you connected the interface cable correctly. (See the Quick Setup 
Guide.)
 
						

							Troubleshooting and routine maintenance
115
C
The headers or footers appear 
when the document displays on the 
screen but they do not show up 
when it is printed.There is an unprintable area on the top and bottom of the page. Adjust the top and 
bottom margins in your document to allow for this.
The machine does not print on both 
sides of the paper even though the 
printer driver setting is Duplex.Check the paper size setting in the printer driver. You need to select A4, Legal or 
Folio.
The machine is not printing or has 
stopped printing and the machine’s 
Status LED turns yellow.Press Job Cancel. As the machine cancels the job and clears it from the memory 
it may produce an incomplete printout.
Scanning difficulties
DifficultiesSuggestions
TWAIN errors appear while 
scanning.Make sure that the Brother TWAIN driver is chosen as the primary source. In 
PaperPort ™ 11SE, click File, Scan or Get Photo and choose the Brother 
TWAIN driver.
Network scanning does not work. See Network difficultieson page 116.
Software difficulties
DifficultiesSuggestions
Cannot install software or print. Run the Repair MFL-Pro Suite program on the CD-ROM. This program will repair 
and reinstall the software.
Cannot perform ‘2 in 1 ’ or ‘4 in 1 ’ 
printing.Check that the paper size setting in the application and in the printer driver are the 
same.
The machine does not print from 
Adobe Illustrator. Try to reduce the print resolution. (See Advanced tab in the Software User’s Guide 
on the CD-ROM.) 
Paper handling difficulties
DifficultiesSuggestions
The machine does not load paper.
The LCD shows No Paper or a 
Paper Jam message. „If there is no paper, load a new stack of paper into the paper tray.
„If there is paper in the paper tray, make sure it is straight. If the paper is curled, 
you should straighten it. Sometimes it is helpful to remove the paper, turn the 
stack over and put it back into the paper tray.
„Reduce the amount of paper in the paper tray, and then try again.
„Check that the MP tray mode is not chosen in the printer driver.
„If the LCD shows Paper Jam message and you still have a problem, see 
Paper jamson page 139.
The machine does not feed paper 
from the MP tray.„Fan the paper well and put it back in the tray firmly.
„Make sure that MP tray mode is chosen in the printer driver.
How  do  I  print  envelopes? You can load envelopes from the MP tray. Your application must be set up to print 
the envelope size you are using. This is usually done in the Page Setup or 
Document Setup menu of your application. (See your application’s manual for 
more information.)
Printing difficulties (continued)
DifficultiesSuggestions
 
						

							116
Which paper can I use? You can use plain paper, recycled paper, envelopes and labels that are made for 
laser machines. (For details, see Acceptable paper and other mediaon page 11.)
There is a paper jam. (See Paper jamson page 139.)
Print quality difficulties
DifficultiesSuggestions
Printed pages are curled.„Low quality thin or thick paper or not printing on the recommended side of the 
paper could cause this problem. Try turning over the stack of paper in the 
paper tray.
„Make sure that you choose the Paper Type that suits the media type you are 
using. (See Acceptable paper and other mediaon page 11.)
Printed  pages  are  smeared. The Paper Type setting may be incorrect for the type of print media you are using, 
or the print media may be too thick or have a rough surface. (See Acceptable 
paper and other mediaon page 11 and Basic tab in the Software User’s Guide on 
the CD-ROM.)
Printouts are too light.„If this problem occurs when making copies or printing received faxes, turn 
Toner Save mode to off in the machine menu settings. 
(See Toner saveon page 26.)
„Set Toner Save mode to off in the Advanced tab in the printer driver. 
(See Advanced tab in the Software User’s Guide on the CD-ROM.)
Network difficulties
DifficultiesSuggestions
Cannot print over a wired Network. If you are using a wireless connection or are having Network problems see the 
Network Users Guide on the CD-ROM for more information.
Make sure your machine is powered on and is on-line and in Ready mode. Print 
the Network Configuration list to see your current Network settings. (See How to 
print a reporton page 76.) Reconnect the LAN cable to the hub to verify that the 
cable and network connections are good. If possible, try connecting the machine 
to a different port on your hub using a different cable. If the connections are good, 
the upper LED of the back panel of the machine will be green.
Paper handling difficulties (continued)
DifficultiesSuggestions
 
						

							Troubleshooting and routine maintenance
117
C
The network scanning feature 
does not work.
The network PC Fax Receive 
feature does not work.
The network printing feature does 
not work.(For Windows® only) The firewall setting on your PC may be rejecting the 
necessary network connection. Follow the instructions below to configure your 
firewall. If you are using personal firewall software, see the User’s Guide for your 
software or contact the software manufacturer.
For Windows
® XP SP2 users:
aClick the Start button, Control Panel, Network and Internet 
Connections and then Windows Firewall. Make sure that Windows 
Firewall on the General tab is set to On.
bClick the Advanced tab and Settings... button of the Network 
Connection Settings.
cClick the Add button.
dTo add port 54925 for network scanning, enter the information below:
1. In Description of service: Enter any description, for example “Brother 
Scanner”.
2. In Name or IP address (for example 192.168.0.12) of the computer 
hosting this service on your network: Enter “Localhost”.
3. In External Port number for this service: Enter “54925”.
4. In Internal Port number for this service: Enter “54925”.
5. Make sure UDP is selected.
6. Click OK.
eClick the Add button.
fTo add port 54926 for network PC Fax, enter the information below:
1. In Description of service: Enter any description, for example “Brother 
PC Fax”.
2. In Name or IP address (for example 192.168.0.12) of the computer 
hosting this service on your network: Enter “Localhost”.
3. In External Port number for this service: Enter “54926”.
4. In Internal Port number for this service: Enter “54926”.
5. Make sure UDP is selected.
6. Click OK.
gIf you still have trouble with your network connection, click the Add button.
hTo add port 137 for network scanning, network printing and network PC 
Fax receiving, enter the information below:
1. In Description of service: - Enter any description, for example “Brother 
PC Fax receiving”
2. In Name or IP address (for example 192.168.0.12) of the computer 
hosting this service on your network: Enter “Localhost”.
3. In External Port number for this service: Enter “137”.
4. In Internal Port number for this service: Enter “137”.
5. Make sure UDP is selected.
6. Click OK.
iMake sure if the new setting is added and is checked, and then click OK.
Network difficulties (continued)
DifficultiesSuggestions
 
						

							118
The network scanning feature 
does not work.
The network PC Fax Receive 
feature does not work.
The network printing feature does 
not work.
(continued)For Windows Vista® users:
aClick the Start button, Control Panel, Network and Internet, Windows 
Firewall and click Change settings.
bWhen the User Account Control screen appears, do the following.
„Users who have administrator rights: Click Continue.
„For users who do not have administrator rights: Enter the 
administrator password and click OK.
cMake sure that Windows Firewall on the General tab is set to On.
dClick the Exceptions tab.
eClick the Add port... button.
fTo add port 54925 for network scanning, enter the information below:
1. In Name: Enter any description, for example “Brother Scanner”.
2. In Port number: Enter “54925”.
3. Make sure UDP is selected. Then click OK.
gClick the Add port... button.
hTo add port 54926 for Network PC Fax, enter the information below:
1. In Name: Enter any description, for example “Brother PC Fax”.
2. In Port number: Enter “54926”.
3. Make sure UDP is selected. Then click OK.
iMake sure that the new setting is added and is checked, and then click 
Apply.
jIf you still have trouble with your network connection such as network 
scanning or printing, check File and Printer Sharing box in the 
Exceptions tab and then click Apply.
Your computer cannot find your 
machine.For Windows
® users: The firewall setting on your PC may be rejecting the 
necessary network connection. For details, see the instruction above.
For Macintosh
® users: Re-select your machine in the DeviceSelector 
application located in Macintosh HD/Library/Printers/Brother/Utilities or from 
the Model pop-up menu of ControlCenter2.
Other
DifficultiesSuggestions
The  machine  will  not  turn  on. Adverse conditions on the power connection (such as lightning or a power surge) 
may have triggered the machine’s internal safety mechanisms.
Turn the machine off and unplug the power cord. Wait for ten minutes, then plug 
in the power cord and turn the machine on.
Network difficulties (continued)
DifficultiesSuggestions