Brother MFC-9550 manual HP LaserJet series II, IID, IIP, IIP+, III, Iiid or Iiip

T R O U B L E S H O O T I N G A N D M A I N T E N A N C E 153

The machine Connect Failure or Bi-Directional Communication Error

Recently, some printers have included a function to show the printer status on the PC display. Such printers use the bi-directional communication parallel port between the printer and the PC. Our machine also has a bi-directional parallel port function. Since Windows® 3.xx does not support bi-directional communication on the parallel port, each peripheral vendor has developed and supplies their own bi- directional device driver, which will be installed into Windows® 3.xx. If you install two or more different bi-directional device drivers into Windows® , they might conflict with each other and cause some problems.

Please make sure you have installed the machine driver by running SETUP.EXE from your CD-ROM drive, as instructed on the CD-ROM label. The bi-directional communication may be disabled when the driver is installed from Add menu in “Printers” of Control Panel. Please restart Windows® after installing the drivers.

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

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

The Resource Manager for the machine may not work if the printer driver for the above models is installed after the installation of the machine printer driver.

In this case, please install the machine printer driver again or copy BI- DI.386 from the CD-ROM to the Windows/System directory. (NOTE: BI-DI.386 on Disk 1 is not compressed.)

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

If Microsoft Windows® Printing System for above models are used, you have to modify the “win.ini” file which is in the Windows directory to turn the printer's bi-directional function off.

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