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Custom features on a single line. If you have Call Waiting, Call Waiting/Caller ID, Caller ID, RingMaster, Voice Mail,
an answering machine, an alarm system or other custom feature on a single
telephone line with you r machine, it may create a problem sen ding 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 interrup t or disrupt the faxes. Brother’ s ECM feature
should help overcome t his problem. This co ndition is related t o the telephone
system industry and is common to all devi ces that send and receive informatio n
on a single, shared li ne with custom feat ures. If avoiding a slight interruption is
crucial to your business, a separate line with no custom features is recommended.
Menu access difficulties
Difficulties Suggestions
The machine beeps whe n you try to
access the Setup Receive and
Setup Send menus.
If the Fax key is not illumina ted, press it to turn on Fax mode. The Setu p Receive
setting (Menu, 2, 1) and Setup Send setting (Menu, 2, 2) are availa ble only when
the machine is in Fax mode.
Copy quality difficulties
Difficulties Suggestions
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 151 and Cleaning the corona wire son pa ge 156.)
Printing difficulties
Difficulties Suggestions
No printout. Check that the machin e is plugged in and the power switch is tu rned on.
Check that the toner cartridges and drum unit are installed properly. (See
Replacing the drum uni t on 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 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.
Handling incoming calls (continued)
Difficulties Suggestions