Adaptec 1520B - AHA Storage Controller Fast SCSI 10 MBps Installation Guide download pdf (Page 13)

AHA-1520B Installation Guide

Part Number: 511162-00, Rev. A Page 13 of 16

Print Spec Number: 495339-00

Current Date: 5/30/96

Last Modified: May 30, 1996 3:43 pm

File Location: n:\mario\1520b_ig.nec\1520b_ig.frm

ECN Date: 6/11/95

I have some older SCSI-1 devices installed and my computer is

operating erratically or hangs.

Try changing the following device settings in SCSISelect

for your older SCSI-1 device: Set Initiate Sync Negotiation

to No; Set the Maximum Sync Transfer Rate to 5.0.

One of the SCSI devices on my computer does not allow me to

disable termination. How can I install it on the SCSI bus?

If it is an external SCSI device, install the device as the

last device of the external daisy chain. If it is an internal

SCSI device, install the device at the end of the internal

SCSI cable.

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 BIOS address, I/O port

address, and IRQ settings. Try changing these settings on

the host adapter one at a time to isolate the conflict.

I cannot use my host adapter in a Plug and Play System

Try setting ISA Plug and Play Support 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 DIP switches and SCSISelect.

Common Error Messages

“Can not locate any host adapter at either 340h or 140h IO Port

address. Possible IO Port address conflict”

This message occurs when the BIOS fails to locate a valid host

adapter in the system—Check for an I/O port address con-

flict between the host adapter and other cards installed in

your computer.

“Target connected, but not ready”

This message occurs when the host adapter requests data from

an installed SCSI device and does not receive an answer—Try

setting the Send Start Unit Command to Yes for the host

adapter. If your device is a removable-media drive, make

sure the media is inserted in the drive. If the message still

appears, follow the drive manufacturer’s instructions to

make sure the drive is set to spin up when the power is

switched

ON.

“Host Adapter diagnostic error!”

This message usually indicates that the host adapter is not

working correctly—Check the items in Troubleshooting

Checklist on page 11. If the problems persists, contact

Adaptec customer support.

“No ROM Basic, system halted”

This message usually indicates that the first hard drive in the

system has not been set as the active or bootable partition—

Start the computer with a bootable diskette. Run Fdisk

from the floppy and make sure that the partition on the

hard drive is set to Active. (Use Fdisk and the option

Show Partition Information.) If the hard drive partition is

not shown as active, then use option number 2 of Fdisk to

make the partition active.

Contacting NEC

■ For technical support (answers to technical questions,

information about the NEC BBS, Web site, and access

to our FastFacts system) call 1-800-632-4667.

■ For pre-sales information and product literature, call

1-800-NEC-INFO.

■ The NEC FastFacts system provides answers to com-

mon questions, product literature, and current infor-

mation about NEC products. The NEC FastFacts

system is available 24 hours a day, 7 days a week, at

1-800-366-0476.

■ The NEC Web server provides product information,

driver updates, and answers to common questions, as

well as direct ordering through NEC. The NEC server

is available 24 hours a day, 7 days a week, at

http://www.nec.com.

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