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COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES
5. Troubleshooting
1. Check all the cables. Use IEEE 1284 rated cables.
2. Check the computer BIOS. Make sure that the BIOS
parallel setup is set to
EPP
or
EPP/SPP
mode for
faster data transfer and bidirectional communication.
3. If you’re working with portable drives, the Autoswitch
must be in Manual Mode when selecting the port
where the portable drive is attached until the driver
software recognizes and assigns a logical drive. After
the driver has been loaded, you can put the
Autoswitch back into Auto-Link Mode.
4. Using the optional AC power adapter. The
Autoswitch is usually powered by the signal drawn
from the computer and parallel-device parallel ports.
However, if the computer or the device fails to supply
enough power to the Autoswitch, a 9-VDC, 500-mA
power adapter can be used. We recommend using
the power adapter if you’re connecting inkjet and
DeskJet printers.
5. Adjust the timeout. If you print long document files
with graphics, or use a printer spooler, adjust the
