Adaptec 3940UW User's Guide download pdf (Page 61)

AHA-3940U/3940UW/3940UWD User’s Guide

Stock Number: 511041-00, Rev. B Page: 5-1

Print Spec Number: 494569-00

Current Date: 2/14/97 ECN Date: 2/17/97

5-1

▼ ▼ ▼ ▼

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

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