Adaptec APA-358 Installation Guide download pdf (Page 8)

APA-358 Installation Guide

Part Number: 510604-00, Rev. A

Print Spec Number: 492717-00

Current Date: 5/19/94 ECN Date: 5/31/94

Note: You cannot boot from a device con-

nected to the MiniSCSI EPP because your

computer cannot boot from a device con-

nected to the parallel port. The MiniSCSI

EPP device drivers must be loaded during

the boot process from another device.

■ Make sure all cables are properly connected.

■ Make sure all SCSI devices have unique SCSI IDs.

■ Make sure the SCSI bus is properly terminated.

No SCSI Host Adapter Detected Message Appears at Bootup

The MiniSCSI EPP requires SCSI TERMPOWER to

operate. Check for SCSI device TERMPOWER:

■ Use a voltmeter to measure the voltage available

between pin 38 and ground on the SCSI device’s

connector (see SCSI Connector Pinouts). Make sure

the SCSI device(s)

power is ON; it should measure

approximately +5 volts. Very low or no voltage at

pin 25 indicates a problem with termination

power; this condition disables the adapter.

■ Plug a printer into the printer passthrough port. If

the printer can print, you have correct

TERMPOWER.

No SCSI Functions in Use Message Appears at Bootup

The software driver is looking for a different device.

For example, you may have the CD-ROM driver

loaded, but you are trying to work with a hard disk

drive or vice versa. Each Adaptec software driver

recognizes the existence of all SCSI devices attached

to the SCSI chain but only works with the device for

which it is written to communicate. Install the correct

driver or remove an unwanted driver from your

config.sys

file with a text editor program.

Network Installations

If your computer is part of a network installation,

your printer port may be redirected to a network

printer. For instance, Novell

NetWare

software

uses the capture command for this purpose. If this is

the case, the software will not detect the hardware at

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