Brother MFC-7420 User Manual page 101

DIFFICULTY
Scanning Difficulties
TWAIN errors appear while
scanning.
Software Difficulties
Cannot install software or print.
Cannot perform '2 in 1' or '4 in 1'
printing.
Machine does not print from Adobe
Illustrator
When using ATM fonts, some
characters are missing or some
characters are printed in their
place.
'Unable to write to LPT1' or 'LPT1
already in use' Error Message
appears.
'MFC is Busy' Error Message
appears.
SUGGESTIONS
Make sure the Brother TWAIN driver is selected as the primary source. In
®
PaperPort , click Scan in the File menu and select the Brother TWAIN driver.
Run the Repair MFL-Pro Suite program on the CD-ROM. This program will repair
and reinstall the software.
Check that the paper size setting in the application and in the printer driver are the
same.
Try to reduce the print resolution. (See Advanced tab in the Software User's Guide
on the CD-ROM.)
®
If you are using Windows 98/98SE/Me, select 'Printer Settings' from the 'Start'
menu. Select the properties of the 'Brother MFC-7420 or MFC-7820N'. Click
'Spool Setting' on the 'Details' tab. Select 'RAW' from 'Spool Data Format.'
1.Make sure the MFC is on (plugged into the AC power outlet and the power switch
turned on) and that it is connected directly to the computer using the IEEE-1284
bi-directional parallel cable. The cable must not go through another peripheral
device (such as a Zip Drive, External CD-ROM Drive, or Switch box).
2.Make sure the MFC is not displaying an error message on the LCD Display.
3.Make sure no other device drivers, which also communicate through the parallel
port, are running automatically when you boot up the computer (such as, drivers
for Zip Drives, External CD-ROM Drive, etc.) Suggested areas to check: (Load=,
Run=command lines in the win.ini file or the Setup Group)
4.Check with your computer manufacturer to confirm that the computer's parallel
port settings in the BIOS are set to support a bi-directional machine; i.e. (Parallel
Port Mode – ECP)
Troubleshooting and routine maintenance
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