Scsi Troubleshooting Checklist - Adaptec AHA-3940 User Manual

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SCSI Troubleshooting Checklist

AHA-3940/3940W 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 trou-
bleshooting information, see Adaptec Technical Support on page ii.
Answer these questions first if a problem occurs during installation:
Did the AHA-3940/3940W BIOS banner appear when you
booted your computer? If not, the motherboard BIOS does not
support PCI-to-PCI bridges. Contact your computer vendor for
a motherboard BIOS upgrade.
Are the power cables and SCSI interface cables properly con-
nected? (See Connecting SCSI Cables and Devices on page 2-7.)
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 computer 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?
Is pin-1 orientation maintained throughout the SCSI bus? (See
Connecting Internal SCSI Devices on page 2-8.)
Are PCI bus and slot parameters set correctly in the com-
puter's Setup program? (See Configuring Multiple Host Adapters
on page 3-21.) The PCI bus is designed to assign IRQ, port
address, and BIOS address settings automatically to the host
adapter. But you may need to assign some of these values man-
ually in the Setup program.
Is each SCSI device, including the channel, set to a unique SCSI
ID? (See Setting SCSI IDs on page 2-15.)
Is SCSI termination set correctly? (See Terminating the SCSI Bus
on page 2-13.)
If your problem is still not resolved, continue with the next section.
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AHA-3940/3940W User's Guide
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Troubleshooting
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