Service manual

MFC-8420/8820D/8820DN, DCP-8020/8025D/8025DN
SERVICE MANUAL
6-21
S-3 Although the USB driver is installed, it is unable to find the BRUSB: port.
(Windows98/Me only)
User Check
(1) Re-install, according to the instruction of the subsection 3.2 in Chapter 2.
(2) Try to connect the machine directly to the computer if it is connected through a USB hub.
Possible cause Step Check Result Remedy
Computer
Operating
System
1 Windows 95 or Windows
NT4.0?
Yes Not supported.
Computer
settings
2 Does ‘Universal Serial Bus
Controllers’ appear in the
Device Manager tab of ‘System
Properties’ in Control Panel?
No This problem can be caused
by your computer settings.
See the computer manual.
USB cable/
machine
damage
3 Does “Add New Hardware
Wizard” appears on the screen
or Does test print complete?
No The USB cable is damaged.
Replace the cable. If the
same problem appears, the
machine will be damaged.