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Troubleshooting Checklist
Most problems that occur with your host adapter result
from errors in preparing and connecting devices on the
SCSI bus. If you have problems when using your host
adapter, check these items first.
Is the SCSI device powered?
Are all the power cables and SCSI bus cable
connected?
Is the host adapter firmly seated and secured in an
expansion slot?
Is the device single-ended (as opposed to differen-
tial)?
Do the host adapter and the device on the SCSI bus
have unique SCSI IDs? (See Step 4 on page 2)
Is the SCSI device terminated properly? (See Step 4
on page 2)
Is parity checking consistently enabled or disabled on
both the device and the host adapter? (See Basic Host
Adapter Settings on page 6.)
If you still have problems after checking the above items,
continue with the following sections.
Common Problems and Solutions
When installing EZ-SCSI, my DOS/Windows 3.x system does not find
the AVA-1505AE/AI.
This indicates a resource conflict. Try a different I/O Port
Address and/or IRQ and try installing EZ-SCSI again.
I have both a Soundblaster card with a SCSI controller embedded on
it, and an AVA-1505AE/AI installed in the same computer. Am I going
to experience any resource conflicts?
The SCSI controller on the Soundblaster card is typically
set, by default, to use I/O port address 340 and IRQ 11.
To avoid resource conflicts, check the current setting of
the AVA-1505AE/AI and make any required changes
with the J3 jumper and SCSISelect.
When trying to run the Format/Verify SCSI disk utility in SCSISelect, I
get an Unexpected SCSI Command Failure pop-up box with error
information.
The utility probably encountered a problem with the disk
device or the media and therefore cannot run. You can
determine from the Sense Key information (e.g., 06h -
Unit Attention) both the cause of the problem and its
solution. Here are some of the more common Sense Key
values and their meanings:
02h - Not ready—The media is not ready to format.
Be sure that media is inserted in the drive and that
the media is spun up.
03h - Medium error—The disk media may be defec-
tive. If it is a removable-media drive, try using a dif-
ferent disk media. If it is a fixed hard disk drive, the
disk may be physically damaged. Verify the hard
disk drive to check for damage. If there is damage,
format the media with SCSISelect.
04h - Hardware error—The hard disk drive may be
defective. Consult the hardware documentation and
contact the manufacturer.
05h - Illegal request—The Adaptec formatting utility
does not support a low-level format of this device;
however, the device may already be low-level for-
matted by the manufacturer. (This error rarely
occurs.)
06h - Unit attention—The removable media may be
write-protected. Disable write protection and run the
utility again.
I have some older SCSI-1 devices installed and my computer is
operating erratically or hangs.
Try changing the following SCSI device setting in
SCSISelect for your older SCSI-1 device: Set Initiate Sync
Negotiation to No.
The screen is difficult to read when I run the SCSISelect utility.
Press F5 to toggle the display between color and mono-
chrome modes. This may make it easier for you to read
the screen.
I cannot use my host adapter in a non-Plug and Play system.
Check for possible resource conflicts between the host
adapter and other cards installed in your computer; the
cards may have conflicting I/O port address and IRQ
settings. Try changing these settings on the host adapter
one at a time, with Jumper 3 and SCSISelect to isolate
the conflict.
I cannot use my host adapter in a Plug and Play System
Try setting ISA Plug and Play Mode to Disable in the
Advanced Configuration Options of SCSISelect. Your
host adapter is now a Legacy card, and you must config-
ure it manually with the Jumper J3 and SCSISelect.
7
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