Brother MFC-4300 Owner's Manual

      T R O U B L E S H O O T I N G   A N D   R O U T I N E   M A I N T E N A N C E

SETUP.EXE from your CD-ROM drive, following the instructions on the CD-
ROM label. The bi-directional communication may be disabled when the driver 
is installed from the Add menu in “Printers” of the Control Panel. Please restart 
Windows

®

.

Remove the conflicting situation caused by one of the following printer drivers. 
Review the following sections that apply to any additional printer drivers you 
may have installed into your Windows

®

 software.

Brother HL-6/6V/10h/630series/660series/960/1260/WL-660

HP LaserJet series II, IID, IIP, IIP+, III, IIID, IIIP or IV Plus

NEC SuperScript 610/660

EPSON ActionLaser 1100/1400

LexMark WinWriter 200

The Resource Manager for your machine’s Brother printer drivers may not work 
if the printer drivers for the above laser printers models are installed after the 
installation of your machine’s Brother printer drivers.

In this case, please install your machine’s Brother printer driver again or copy 
BI-DI.386 from the CD-ROM to the Windows/System directory. 

(NOTE: BI-DI.386 on the CD-ROM is not compressed.)

If Microsoft Windows

®

 Printing System is used for the above models, you must  

modify the “win.ini” file in the Windows

®

 directory to turn the machine’s 

bi-directional function off.

We recommend that you do a back-up before you modify the WIN.INI or 
SYSTEM.INI files, just in case.

Open the “win.ini” file using the “Notepad” application. Look for the following 
statement in the [spooler] section:

[spooler]

QP.LPT1 = wpsljqp.dll 

Then disable this function, by adding a semicolon at the beginning of the above 
sentence as follows:

[spooler]

;QP.LPT1 = wpsljqp.dll 

Then, open the “system.ini” file using the “Notepad” application. Look for the 
following statement in the [386Enh] section:

[386Enh]