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...

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:...

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....

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...

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...

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...

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...

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...

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....