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P
ART
III: S
ECTION
B: T
ROUBLESHOOTING AND
O
NLINE
H
ELP
R
ESOURCES
113
PROBLEM
POSSIBLE SOLUTION
a
The computer or
software will
not recognize
the modem.
1
To reset the COM port and IRQ settings, lift the black plastic shunts off the modem and
replace the COM port shunt to 3 and the IRQ shunt to 5. Once you’ve changed the
settings, be sure to make the same changes to your software and Windows settings.
The illustration below shows various COM port and IRQ settings. If the computer or
software still will not recognize the modem after these changes are made, try using a
different software application.
0 1 SEL
C O M 1
0 1 SEL
C O M 3
0 1 SEL
COM 4
0 1 SEL
COM 2
IRQ
2 3 4 5 7
d
POWER USER TIP:
Running a self-diagnostics test on your computer is an easy way to figure
out whether or not you have a COM port/IRQ conflict. Go to the DOS or Windows directory located
on your boot disk (typically C:\) and type MSD. From here, type Q to see the IRQ (Interrupt
Request) information. Note the COM port and IRQ your modem is using. If your modem is sharing
an IRQ with another device, you need to assign it to another IRQ through your software and
Windows settings.