Brother MFC-9420CN Service Manual page 277

Although the USB driver is installed, it is unable to find the BRUSB: port.
S-2
(Windows98/Me only)
User Check
(1) Re-install the USB driver by following the steps below;
i) Turn the machine off.
ii) Double-click the file "Deins USB.exe" in the USB directory of the CD-ROM.
iii) Re-boot the PC.
iv) Turn the machine on.
v) "Add New Hardware Wizard" is launched again, follow the instructions in the Wizard
tore-install the driver.
(2) Try to connect the machine directly to the computer if it is connected through a USB hub.
Possible cause Step
Computer 1
Operating
System
Computer 2
settings
USB cable/ 3
machine
damage
Check
Windows 95 or Windows
NT4.0?
Does 'Universal Serial Bus
Controllers' appear in the
Device Manager tab of
'System Properties' in
Control Panel?
Does "Add New Hardware
Wizard" appear on the
screen or Does test print
complete?
9 - 2 1
Result Remedy
Yes The operating system does not
support USB.
No This problem can be caused by
your computer settings. See the
computer manual.
No The USB cable is damaged.
Replace the cable. If the same
problem appears, the machine
will be damaged.
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