Brother 6550MC, 7550MC warranty 16-7, Boot Comm.drv=comm115.drv Comm.drv=brmfcomm.drv

MFC 4550/6550MC/7550MC

OP-US-5.0

TROUBLESHOOTINGPROCEDURES

Problem using the HP Pavilion PC and the “HP DEMO” screen saver

If you select the “HP Demo” screen saver on your HP Pavilion PC after you have installedtheMulti-FunctionLinkProsoftware,theSystem.inifileisoverwrittenand you can not use the Brother MFC to print, scan or for Remote Setup.

IfyouhaveusedtheHPDemoscreensaveralready,youmustedittheSystem.inifile asfollows:

[boot]

;comm.drv=comm115.drv

comm.drv=brmfcomm.drv

[386Enh] DEVICE=Bi-Di.386

IfyoudonotwanttoedittheSystem.inifile,pleasechangethescreensavertoanother oneandRe-installMulti-FunctionLinkProagain.

Bi-Directional Parallel Ports (nibble and byte modes) (Only for MFC 6550MC/ 7550MC):

The MFC 6550MC/7550MC supports both nibble (AT) and byte (Bi-Directional) mode parallelports.IfyourPCsupportsbytemode,scanningandfaxreceptionwillbeat afasterspeed.Toverifyorchangetheparallelportmode,pleasecheckyoursystem BIOS in the CMOS Setup or contact your computer manufacturer for assistance.

NOTE: Some older PC models support only nibble mode. Generally, newer models support both nibble and byte modes.

MFC Connect Failure or Bi-Directional Communication Error

Recently, someprintershaveincludedafunctiontoshowtheprinterstatusonthe PC display. Such printers use the bi-directional communication parallel port between the printer and the PC. Our MFC 6550MC/7550MC series also has a bi- directionalparallelportfunction.SinceWindows3.xxdoesnotsupportbi-directional communication on the parallel port, each peripheral vendor has developed and suppliestheirownbi-directionaldevicedriverwhichwillbeinstalledintoWindows 3.xx. Ifyouinstalltwoormoredifferentbi-directionaldevicedriversintoWindows, they might conflict with each other and cause some problems.

Please make sure you have installed the MFC 6550MC/7550MC series driver by executing SETUP.EXE from your disk drive, as instructed on the Disk 1 label. The bi-directional communication may be disable when the driver is installed from Add menu in “Printers” of Control Panel please restart Windows.

Remove the conflicting situation caused by one of the following printer drivers.

Reviewthefollowingsectionsthatapplytoanyadditionalprinterdriversyoumay

haveinstalledintoyourWindowssoftware.

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