Adaptec 1744, AHA-1740A, 1742A user manual EISA-to-Fast Scsi Host Adapter Troubleshooting

EISA-to-Fast SCSI Host Adapter Troubleshooting

∙LED on host adapter after power-on - The LED on the AHA-1740A/1742A/1744 should come on briefly after turn- ing the system power on. The LED should turn off when a request is sent to the host adapter.

∙LED on host adapter during operation - If the LED on the AHA-1740A/1742A/1744 is always on, the orientation of the SCSI cable between the host adapter and the drive may be reversed. For the proper orientation refer to the AHA-1740A/1742A/1744 Installation Guide.

∙If the LED begins to blink at regular intervals then the host adapter has detected an internal failure and should be returned for repair or replacement to the place of pur- chase. An error message may also appear on the screen.

If the AHA-1740A/1742A/1744 BIOS message does not display on the screen then the computer system is not recognizing the host adapter.

∙Check the AHA-1740A/1742A/1744 BIOS address to ensure it is not conflicting with other host adapters in- stalled in the computer system.

∙Try a different BIOS address. For the proper address refer to the AHA-1740A/1742A/1744 Installation Guide.

∙Change the BIOS wait-state jumper. For the proper jumper settings refer to the AHA-1740A/1742A/1744 Installation Guide.

∙Try changing the BIOS address from the default of CC000h to DC000h, or some other available value.

If the following message displays:

host adapter not found at port 330h

Check the port address setting. Verify the correct installation of the SCSI cable. An inverted or misplaced internal SCSI cable, generating a forced SCSI reset, may be causing the problem.

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