Adaptec 1821900 Service manual

USER’SREFERENCE
ADAPTEC SCSI CARD 29160
ULTRA160 SCSI CONTROLLER

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Adaptec, Inc.
691 South Milpitas Boulevard
Milpitas, CA 95035
© 2000 Adaptec, Inc. Adaptec, Inc.
All rights reserved. Adaptec and the Adaptec logo
are trademarks of Adaptec, Inc. which may be
registered in some jurisdictions.
Printed in Singapore
STOCK NO.: 512521-03, Rev. A RAC 01/2000
(SRC: 512521-00, Ver. AA)

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▼ ▼ ▼ ▼ Adaptec SCSI Card 29160
Ultra160 SCSI Controller
User’s Reference

iii
Overview 1
Ultra160 SCSI on the Adaptec SCSI Card 29160 1
Understanding SCSI 2
SCSI IDs 2
Terminating the SCSI Bus 3
Troubleshooting 5
Troubleshooting Checklist 5
Troubleshooting in Windows 95/98 6
Common Error Messages 10
Using the Adaptec SCSI Card 29160 and SCSI De-
vices 12
Using SCSI Devices 12
Using SCSI Hard Disk Drives 12
Using Ultra160 Hard Disk Drives 13
Using Scanners 13
Combining SCSI and Non-SCSI Devices 14
Installing Multiple SCSI Cards 15
Connecting the LED Connector 15
▼ ▼ ▼ ▼ Contents

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Adaptec SCSI Card 29160 User’s Reference
Configuring the
Adaptec SCSI Card 29160 with SCSISelect 16
Starting SCSISelect 18
Exiting SCSISelect 18
Using SCSISelect Settings 18
SCSI Bus Interface Definitions 19
Boot Device Options 19
SCSI Device Configuration 19
Advanced Configuration Options 21
Using SCSI Disk Utilities 23
Connecting SCSI Devices 24
Maximum Cable Lengths 25

1
Overview
Ultra160 SCSI on the Adaptec SCSI Card 29160
The Adaptec SCSI Card 29160 supports Ultra160 SCSI devices.
Ultra160 is a new generation of SCSI technology that expands SCSI
performance from 80 MBytes/sec to 160 MBytes/sec. In addition to
providing much greater performance, Ultra160 SCSI enables a maxi-
mum allowable cable length of 12 meters for optimal connectivity
and flexibility.1
The Adaptec SCSI Card 29160 combines this Ultra160 SCSI technol-
ogy with Adaptec’s SpeedFlex™ technology. SpeedFlex allows the
Adaptec SCSICard 29160 to be backwards compatible with previous
generations of SCSI products, while allowing newer Ultra160 SCSI
devices to operate at the higher 160 MBytes/sec rate.
Although the Adaptec SCSI Card 29160 is a 64-bit PCI card, it also
works in a 32-bit PCI slot. When installed in a 32-bit PCI slot, the
card automatically runs in the slower 32-bit mode.
This User’s Reference provides information about troubleshooting,
SCSI termination, and other important topics. It also explains how to
use the built-in SCSISelect utility if you need to change the Adaptec
SCSI Card 29160 settings.
1 WhenonlyoneUltra2orUltra160 SCSIdeviceis connected,the cable length
can be up to 25 meters (82 feet).

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Adaptec SCSI Card 29160 User’s Reference
Note: Read the Adaptec SCSI Card 29160 Installation Guide if
you need instructions on installing the SCSI Card and con-
necting SCSI devices to it.
Understanding SCSI
SCSI (pronounced “scuzzy”) stands for Small Computer Systems
Interface. SCSI is an industry standard computer interface for con-
necting SCSI devices (such as a hard disk drive, CD-ROM drive, or
scanner) to a common SCSI bus.
A SCSI bus is an electrical pathway that consists of a SCSI adapter
card (such as the Adaptec SCSI Card 29160) installed in a computer
and one or more SCSI devices. SCSI cables are used to connect the
devices to the SCSI adapter card.
For the SCSI bus to function properly, a unique SCSI ID must be
assigned to the SCSI card and each SCSI device connected to it, and
the SCSI bus must be properly terminated.
SCSI IDs
Each device attached to the Adaptec SCSI Card 29160, as well as the
Adaptec SCSI Card 29160 itself, must be assigned a unique SCSI ID
number from 0 to 15. A SCSI ID uniquely identifies each SCSI device
on the SCSI bus and determines priority when two or more devices
are trying to use the SCSI bus at the same time.
Refer to the device’s documentation to set the SCSI ID. Here are
some general guidelines for SCSI IDs:
■For internal SCSI devices, the SCSI ID usually is set by config-
uring a jumper on the device.
■For external SCSI devices, the SCSI ID usually is set with a
switch on the back of the device.
■SCSI ID numbers don’t have to be sequential, as long as the
Adaptec SCSI Card 29160 and each device has a different num-
ber. For example, you can have an internal SCSI device with ID
0, and an external SCSI device with ID 6.

3
Overview
■SCSI ID 7 has the highest priority on the SCSI bus. The priority
of the remaining IDs, in descending order, is 6 to 0, then 15 to 8.
■The Adaptec SCSI Card 29160 is preset to SCSI ID 7 and should
not be changed. This gives it the highest priority on the SCSI
bus.
■Most internal SCSI hard disk drives come from the factory pre-
set to SCSI ID 0.
■If you have 8-bit (or Narrow) SCSI devices, they must use SCSI
IDs 0, 1, 2, 3, 4, 5, or 6. SCSI ID 0 is recommended for the first
SCSI hard disk drive.
■If you are booting your computer from a SCSI hard disk drive
connected to the Adaptec SCSI Card 29160, the Boot SCSI ID
setting in the SCSISelect utility must correspond to the SCSI ID
of the device from which you are booting. By default, the Boot
SCSI ID is set to 0. We recommend that you do not change this
setting.
■In Windows®95/98, you can use the Device Manager to deter-
mine which SCSI ID is assigned to each installed SCSI device.
Terminating the SCSI Bus
To ensure reliable communication on the SCSI bus, the ends of the
SCSI bus must be properly terminated. This is accomplished when
the device at the end of each cable, or the end of the cable itself, has a
terminator installed (or enabled). Terminators must be removed, or
termination must be disabled, on devices between the ends of each
cable.
Since the method for terminating a SCSI device can vary widely,
refer to the device’s documentation for instructions on how to
enable or disable termination. Here are some general guidelines for
termination:
■Internal Ultra160 and Ultra2 SCSI devices come from the fac-
tory with termination disabled and cannot be changed. Proper
termination for internal Ultra160 and Ultra2 SCSI devices is
provided by a 68-pin Internal LVD (low voltage differential)
SCSI cable, which has a built-in terminator at its end.

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Adaptec SCSI Card 29160 User’s Reference
■Termination on non-Ultra160 and Ultra2 internal SCSI devices
usually is controlled by manually setting a jumper or a switch
on the device, or by physically removing or installing one or
more resistor modules on the device.
■Termination on most external SCSI devices is controlled by
installing or removing a SCSI terminator. However, termina-
tion on some external SCSI devices is enabled or disabled by
setting a switch on the back of the SCSI device.
■The last external Ultra160 or Ultra2 SCSI device must be termi-
nated with an LVD/SE (low voltage differential/single ended)
terminator plug to ensure that the device will operate at its
maximum speed. If you use a different kind of terminator
plug, the data I/O rate will decrease.
■By default, termination on the Adaptec SCSI Card 29160 itself
is set to Automatic (the preferred method). We recommend that
you do not change this default setting.

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Troubleshooting
Troubleshooting
Most problems can be resolved by following the recommendations
in the Troubleshooting Checklist below. If you still experience prob-
lems after following the recommendations, continue with the rest of
this section.
Troubleshooting Checklist
Most problems with using the Adaptec SCSI Card 29160 result from
errors in preparing and connecting devices on the SCSI bus. If you
have problems, check these items first.
■Are all SCSI devices turned on?
■Are all SCSI cables and power cables properly connected?
■Is the Adaptec SCSI Card 29160 firmly seated and secured in
the PCI expansion slot?
■Is the PCI expansion slot compliant with PCI Rev. 2.1 or higher,
and does it support Bus Mastering?
■Are all SCSI devices and the Adaptec SCSI Card 29160
assigned unique SCSI IDs?
■Are all SCSI devices terminated properly?
Note: If you have problems with a specific SCSI device when
other connected SCSI devices are working correctly, please
contact the manufacturer of the problem device for trouble-
shooting information.

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Adaptec SCSI Card 29160 User’s Reference
Troubleshooting in Windows 95/98
When I start Windows 95/98, the system locks up when the Windows
logo is displayed. How can I get the system to start so that I can verify
that the SCSI card is functioning normally?
1Start or restart your computer.
2(For Windows 95:) When the message “Starting Windows 95”
appears, press and release the F8 function key while the text is
on your screen.
(For Windows 98:) When the message “Starting Windows 98”
appears, press and release the Ctrl key while the text is on your
screen.)
3From the menu that is displayed, select Safe Mode. (It may
take several minutes for Windows 95/98 to load.)
4If the system completes the boot to the desktop, the core soft-
ware is functional; resources, software conflicts, and/or hard-
ware need to be checked.
5If the system still fails to boot, and the boot drive is connected
to an EIDE controller, shut down the system, remove the
Adaptec SCSI Card 29160, and restart the computer.
6Verify that an IRQ is available by viewing resources in System
Properties.
7Under the Control Panel, verify that the operating system is set
to Optimal Performance by checking the Performance tab
under System Properties. (Make sure you are not in Safe
Mode.)
How can I tell if the Adaptec SCSI Card 29160 driver is loading
properly?
1Right click on the My Computer icon on the Windows
desktop.
2Select Properties from the menu.
3Click the Device Manager tab.

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Troubleshooting
4Double-click the SCSI Controller icon. The software driver for
the Adaptec SCSI Card 29160 is listed as 29160, 29160N,
29160B, CPQ29160, Ultra160 PCI SCSI Controller.
■If the driver is listed, the Adaptec SCSI Card 29160 driver is
loading properly.
■If the driver is listed but has an exclamation mark inside a
yellow circle the software driver may conflict with other
hardware using the same resources. Double-click the icon
to see the device status and possible solutions.
■If the driver is listed but has an “X” inside a red circle, the
Adaptec SCSI Card 29160 software driver is disabled and
isn’t loading.
■If the SCSI Controller icon or the Adaptec SCSI Card 29160
software driver is not listed, reinstall the driver that was
included with the SCSI card.
An “X” inside a red circle appears with the Adaptec SCSI Card 29160
software driver in Device Manager. What does this mean?
It means that the Adaptec SCSI Card 29160 software driver is dis-
abled and isn’t loading.
To enable the driver
1Double-click the Adaptec SCSI Card 29160 software driver in
Device Manager.
2Under the General tab, click the Original Configuration (cur-
rent) box.
What if there is no SCSI Controller icon under Device Manager, or the
software driver for the Adaptec SCSI Card 29160 does not appear
under Device Manager?
If the SCSI Controller icon or the software driver do not appear
1Double-click the Add New Hardware icon in Control Panel.
2Click Next to begin installing your new hardware.
3Select Yes (recommended) and click Next to have Windows
search for the Adaptec SCSI Card 29160.
4Follow the on-screen instructions.

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Adaptec SCSI Card 29160 User’s Reference
If Windows 95/98 does not detect the Adaptec SCSI Card 29160, get
the driver disk or CD included with the SCSI card and run the Add
New Hardware Wizard again:
1Double-click the Add New Hardware icon in Control Panel.
2Click Next to begin installing your new hardware.
3Select No and click Next to select the type of hardware you
want to install.
4Select SCSI controllers and click Next.
Note: The 29160 will not appear on the Models list
when Adaptec is selected from the Manufacturers list.
5Click Have Disk... and follow the directions that appear on the
screen to install the driver software.
6Select 29160, 29160N, 29160B, CPQ29160, Ultra160 PCI SCSI
Controller.
How can I check the status of a resource such as IRQ, Memory, or I/O?
1Right click on My Computer.
2Select Properties from the menu.
3Click the Device Manager tab.
4Double-click the Computer icon.
5On the View Resources tab, click the option button for the type
of resource you want to check:
■Interrupt Request (IRQ)
■Input/Output Address (I/O)
■Direct Memory Access (DMA)
■Memory
6The setting, and the hardware using the setting, are displayed.
■If a specific resource is not listed, the resource is not used
by a device.
■If a resource is listed more than once, the resource is used
by more than one device.

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Troubleshooting
■If a resource is used by an unknown device, the resource is
used but the device using the resource cannot be detected.
(This condition is most common.)
7Click Cancel to close the windows, then close Control Panel.
How do I use the Hardware Conflict Troubleshooter in Windows 95/98?
1Click the Start button, then click Help.
2From the Contents tab, double-click Troubleshooting. (In
Windows 98, click Troubleshooting and then click Windows
98 Troubleshooting.)
3Double-click if you have a hardware conflict.
4Follow the step-by-step instructions in Windows Help.

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Adaptec SCSI Card 29160 User’s Reference
Common Error Messages
Here is what you should do if the following messages appear at
bootup:
“Device connected, but not ready”
The host received no answer when it requested data from an
installed SCSI device.
1Run SCSISelect®and set the Send Start Unit Command to Yes
for the particular SCSI device ID. See Starting SCSISelect on
page 18.
2Ensure that the device is set to spin up when the power is
switched on. The spin up option is typically set by a jumper.
(See the documentation for the device.)
“Start unit request failed”
The SCSI card BIOS was unable to send a Start Unit Command to
the device. Run SCSISelect and disable the Send Start Unit Com-
mand for the device.
“Time-out failure during...”
An unexpected time-out occurred.
1Verify that the SCSI bus is properly terminated.
2Verify that all cables are properly connected.
Try disconnecting the SCSI device cables from the SCSI card and
then starting the computer. If the computer successfully restarts, one
of the SCSI devices may be defective.
Note: The following error message entries refer to the SCSI
connectors and SCSI segments on the Adaptec SCSI Card
29160. See the figure on page 13.
“Attention! Too many devices are terminated on the SE connectors”
The SCSI card BIOS has detected more than two terminated devices
on the SE (single-ended) segment. Verify the termination on both the
68-pin internal SE and 50-pin internal SE connectors. Terminate only
the last SCSI device at the end of each cable. Remove or disable the
terminators on the SCSI devices between the ends of the cables. If no
SCSI devices are connected to either of the connectors, set the

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Troubleshooting
SCSISelect termination option for the SE connector to Automatic or
Enable.
“Attention! Insufficient termination detected on the SE connectors”
The SCSI card BIOS has detected only one terminated device, or no
terminated devices, on the SE (single-ended) segment. Verify the ter-
mination on both the 68-pin internal SE and 50-pin internal SE con-
nectors. Terminate only the last SCSI device at the end of each cable.
Remove or disable the terminators on the SCSI devices between the
ends of the cables. If no SCSI devices are connected to either of the
connectors, set the SCSISelect termination option for the SE connec-
tor to Automatic or Enable.
“Attention! Too many devices are terminated on the LVD/SE
connectors”2
The SCSI card BIOS has detected more than two terminated devices
on the LVD-SE SCSI segment. Verify the termination on both the
internal and external 68-pin LVD/SE connectors. Terminate only the
last SCSI device at the end of each cable. Remove or disable the ter-
minators on the SCSI devices between the ends of the cables. If no
SCSI devices are connected to either of the connectors, set the
SCSISelect termination option for the LVD/SE connector to Auto-
matic or Enable.
“Attention! Insufficient termination detected on the LVD/SE
connectors”2
The SCSI card BIOS has detected only one terminated device, or no
terminated devices, on the LVD-SE segment. Verify the termination
on both the internal and external 68-pin connectors. Terminate only
the last SCSI device at the end of each cable. Remove or disable the
terminators on the SCSI devices between the ends of the cables. If no
SCSI devices are connected to either of the connectors, set the
SCSISelect termination option for the LVD/SE connector to Auto-
matic or Enable.
2 For the SE segment, the termination detection feature is only implemented
when the segment is running in SE mode. No message is displayed if it is
running in Ultra160/Ultra2 SCSI mode.

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Adaptec SCSI Card 29160 User’s Reference
Using the Adaptec SCSI
Card 29160 and SCSI
Devices
This section provides useful information on using the Adaptec SCSI
Card 29160 and your SCSI devices. For more information about a
specific SCSI device, refer to the documentation for that device.
Using SCSI Devices
Using SCSI Hard Disk Drives
■If you connect a SCSI hard disk drive to the Adaptec SCSI Card
29160 that was previously connected to a different SCSI card,
you must low-level format the drive before you can use it. Back
up the data on the drive before you move it! (See Using SCSI
Disk Utilities on page 23 for information on using the SCSISelect
format utility.)
Caution: A low-level format destroys all data on the
drive. Be sure to back up the data before performing a
low-level format.
■Every SCSI hard disk drive must be physically low-level for-
matted, partitioned, and logically formatted before it can be
used to store data. Most SCSI drives are pre-formatted at the
factory. If your SCSI hard disk drive has not been pre-format-
ted at the factory, and if your computer is running under DOS,
Windows®3.x, or Windows 95/98, you can format the disk
with the DOS Fdisk and Format commands. (See the DOS and
Windows documentation for more information.) To format
SCSI hard disk drives running under other operating systems,
see the operating system documentation.

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Using the Adaptec SCSI Card29160 and SCSI Devices
Using Ultra160 Hard Disk Drives
■We recommend that you connect your LVD (Ultra160 and
Ultra2) SCSI devices to the two 68-pin connectors on the
LVD-SE SCSI segment and that you connect your non-LVD
SCSI devices (if any) to the two SE (single-ended) connectors
on the SE SCSI segment. This allows the LVD SCSI devices to
run at their maximum performance levels of 160 MBytes/sec
or 80 MBytes/sec. If you combine LVD and non-LVD SCSI
devices on the same SCSI segment, the data transfer rate of the
LVD SCSI devices will drop down to non-LVD SCSI perfor-
mance levels of up to 40 MBytes/sec.
■Internal Ultra160 SCSI devices come from the factory with ter-
mination disabled and cannot be changed. Proper termination
is provided by the terminator at the end of the internal
Ultra160 SCSI cable.
Using Scanners
If you connect a scanner to the Adaptec SCSI Card 29160, you must
install the scanner manufacturer’s proprietary software drivers. See
your scanner’s documentation for details.
50-pin internal SE
connector
68-pin external
Very High Density
LVD/SE connector
68-pin internal SE
connector
SE segment
68-pin internal
LVD/SE connector
LVD-SE
segment

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Adaptec SCSI Card 29160 User’s Reference
Combining SCSI and Non-SCSI Devices
You can install the Adaptec SCSI Card 29160 in a computer that
already has a non-SCSI controller, such as an EIDE controller. How-
ever, you cannot cross-connect the disk drives and other devices:
SCSI devices must be connected to the Adaptec SCSI Card 29160,
EIDE devices must be connected to the EIDE controller, and so on.
When you install the Adaptec SCSI Card 29160 and SCSI disk drives
in a computer that boots from a non-SCSI disk drive, the computer
will continue to boot from the non-SCSI disk drive unless you
change the computer’s CMOS configuration. You do not need to
change the configuration if you just want to use the SCSI drives for
additional file storage space.
If your computer’s motherboard BIOS supports the BIOS Boot Spec-
ification (BBS) feature, you can select a different boot device without
much difficulty. (To determine if the motherboard BIOS supports
BBS, read the computer documentation or contact your mother-
board manufacturer.)
The following table shows what to do, after you physically install
the SCSI card and SCSI devices, to enable you to use different kinds
of disk drives in the same computer:
Does computer
BIOS support BBS? Want computer to boot from SCSI drive? Then do this:
No No No action required. SCSI drives
and non-SCSI drives can be used
together.
No Yes Run CMOS Setup program.
Change primary Hard Disk set-
ting to None or No Drives
Installed (see computer docu-
mentation). You will not be able to
use the non-SCSI drive(s) at all
when you boot from the SCSI
drive.
Yes No No action required. SCSI drives
and non-SCSI drives can be used
together.
Yes Yes Run CMOS Setup program and
select SCSI drive as boot device.
SCSI drives and non-SCSI drives
can be used together.