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Troubleshooting
AHA-3940U/3940UW/3940UWD host adapters have been tested
for compatibility with a wide range of SCSI devices. Most problems
that occur during installation result from errors in preparing and
connecting devices on the SCSI bus. If you need more assistance
after reading this troubleshooting information, see Adaptec Technical
Support and Services on page ii.
Answer these questions first if a problem occurs during installation:
Are you sure the motherboard BIOS supports PCI-to-PCI
Bridges? If not, contact the computer vendor for a mother-
board BIOS upgrade.
Are the power cables and SCSI interface cables properly
connected? (See Connecting SCSI Cables and Devices on page
2-5.) Connect internal SCSI devices to the computer power
supply. Connect power cables of external SCSI devices to a
grounded power outlet. Follow the instructions in the com-
puter and SCSI device documentation.
Is the host adapter firmly seated and secured in a 5-volt PCI
bus slot that is capable of bus mastering? Check the com-
puter's documentation, check its Setup program, or try
another PCI slot.
Is pin-1 orientation maintained throughout the SCSI bus? (See
Connecting Internal SCSI Devices on page 2-6.)
Are PCI bus and slot parameters set correctly in the com-
puter's Setup program? (See Configuring Multiple Host Adapters
on page 3-19.) The PCI bus is designed to assign IRQ, port
address, and BIOS address settings automatically to the host
AHA-3940U/3940UW/3940UWD User's Guide
Stock Number: 511041-00, Rev. B
Print Spec Number: 494569-00
Current Date: 2/14/97
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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Page: 5-1
ECN Date: 2/17/97
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