AT&T 6300 User manual

User's Guide
AT&T Personal
Computer 6300
999-300-200IS
••••••
!••••••
>•••••••
• ••••••a
!•••••••

Written by
Agora Resource, inc.
Lexington, MA
©1984,1985 AT&T
Ali Rights Reserved
Printed in USA
NOTICE
The information in this document is subject to change without
notice. AT&T assumes no responsibility for any errors that may
appear in this document.

LIMITED WARRANTY
AT&T Information Systems Inc.warrants this AT&T Personai Computer
Productto be ingood workingorderfora period ofninety (90)daysfrom
the date of purchase from AT&T Information Systems or an authorized
AT&T Personal Computer dealer. Should this Product faiito be in good
working order at any time during this 90-day warranty period, AT&T
* InformationSystems will, at its option, repair or replace this Product at
no additional chargeexcept
as set forth below.Repair parts and replace
ment Productswill be furnished on an exchange basis and wili be either
new, remanufactured or refurbished, at the discretion of AT&T Informa
tion Systems. All replaced parts and Products become the propertyof
AT&T Information Systems.This limitedwarranty does notinclude repair
ofdamagetothe Productresulting from accident,disaster, misuse,abuse,
non-AT&T modification of the Product, or other events outside AT&T
Information Systems' reasonable control or not arising under normai
operating conditions.
Limited Warrantyservice may be obtained byreturning the Product dur
ingthe 90-daywarranty periodtoanauthorized AT&T PersonalComputer
dealer,or bymailorcarrier,to AT&T Information Systems inaccordance
withthe instructions provided to you bythe AT&T Information Systems
Service Hotiine(1-800-922-0354) and providingproofof purchase date.
If this Product is returned to AT&T Information Systems, you agree to
insure the Product or assume the risk of ioss or damage in transit, to
prepayshippingchargestothedesignatedwarrantyservice iocation and
toshipthe Productinthe originai shippingcontainerorequivalent. Con
tact your authorized AT&T Personal Computer dealer or, ifpurchased
directiy
from AT&T Information Systems, your AT&T Account Executive
for further information.
ALL EXPRESS OR IMPLIED WARRANTIES FOR THIS PRODUCT IN
CLUDING THE WARRANTIES OF MERCHANTABILITYAND FITNESS
FOR A PARTICULAR PURPOSE ARE LIMITED IN DURATION TO A
PERIOD
OF 90 DAYS FROM THE DATE OF PURCHASE, AND NO WAR
RANTIES, WHETHER EXPRESS OR IMPLIED, WILL APPLY AFTER
THIS PERIOD. SOME STATES DO NOT ALLOW LIMITATIONSON HOW
LONGAN IMPLIEDWARRANTYLASTS, SO THE ABOVE LIMITATIONS
MAY NOT APPLY TO YOU.
IF THIS PRODUCT IS NOT IN GOOD WORKING ORDER AS WAR
RANTED ABOVE, YOUR SOLE REMEDY SHALL BE REPAIR OR
REPLACEMENT AS PROVIDED ABOVE. IN NO EVENT WILL AT&T
INFORMATION SYSTEMS OR ITS DEALERS OR SUPPLIERS BE
LIABLETO YOU FOR ANY DAMAGES, INCLUDING ANY LOST PRO
FITS, LOST SAVINGS OR OTHER INCIDENTAL OR CONSEQUENTIAL
DAMAGES ARISING OUT OF THE USE OF OR INABILITY TO USE
SUCH PRODUCT, EVEN IF AT&T INFORMATION SYSTEMS OR AN
AUTHORIZED AT&T PERSONAL COMPUTER DEALER OR SUPPLIER
HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, OR
FOR ANY CLAIM BY ANY OTHER PARTY.

SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF
INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LI
MITATION OR EXCLUSION MAY NOT APPLY TO YOU.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU
MAY ALSO HAVE OTHER RIGHTS WHICH MAY VARY FROM STATE
TO STATE. ^

WARNING
THIS EQUIPMENT HAS BEEN CERTIFIED TO COMPLY WITH THE
LIMITS FOR A CLASS BCOMPUTING DEVICE, PURSUANT TO
SUBPART J OF PART 15 FCC RULES. ONLY PERIPHERALS
(COMPUTER INPUT/OUTPUT DEVICES, TERMINALS, PRINTERS,
' ETC.) CERTIFIED TO COMPLY WITH THE CLASS B LIMITS MAY
BE ATTACHED TO THIS COMPUTER. OPERATION WITH NON-
CERTIFIED PERIPHERALS IS LIKELY TO RESULT IN INTER
FERENCE TO RADIO AND TV RECEPTION.
ALL CABLES USED TO CONNECT TO PERIPHERALS MUST BE
SHIELDED AND GROUNDED. OPERATION WITH CABLES,
CONNECTED TO PERIPHERALS, WHICH ARE NOT SHIELDED
AND GROUNDED MAY RESULT IN INTERFERENCE TO RADIO
AND TV RECEPTION.

This equipment generates and uses radio frequency energy
and if not installed properly, that is, in strict accordance with
the manufacturer's instructions, may cause interference to
radio and television reception, it has been type-tested and
found to comply with the limits for a Class B computng device
in accordance with the specifications in Subpart J of Part 15
FCC rules, which are designed to provide reasonable protection
against interference in a residential installation. However, there
is no guarantee that interference will not occur in a particular
installation.
If the equipment does cause interference to radio
or television reception, which
can be determined by turning the
equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
• Reorient the receiving antenna.
• Relocate the computer with respect to the receiver.
•
Move the computer away from the receiver.
• Plug the computer into a different outlet so that the
computer and receiver are on different branch circuits.
Move the cables connected to the computer to minimize
the interference.
Tighten all screws on cables and the computer housing.
Install blank panels, originally supplied with the PC, in all
unused card slots.
If necessary the user should consult the dealer or an
experienced radio/television technician for additional
suggestions. The user may find the following booklet, prepared
by the Federal Communications Commission, helpful:
"How to Identify and Resolve Radio-TV Interference Problems"
This booklet is available from the U. S. Government Printing
Office, Washington, D.C. 20402.
Stock No. 004-000-00398-5.

ENVIRONMENTAL AND SAFETY SPECIFICATIONS
FOR THE AIOT PC 6300
The AT&T PC 6300 meets the following environmental and safety
specifications.
Physical Characteristics (All Configurations)
Monochrome Color
CPU Monitor Monitor Keyboard
(Approx.)
Size; 15"x16V2"x6" 12"x12y4"x12" 14"x14"x14V2" 17"x7V2"x1"
Weight: 30 lbs 17 lbs 27 lbs 4V2 lbs
Electrical
100-130; 320 volt amps maximum, 59-61 Hertz
Idle power usage under 200 watts
Maximum power usage 240 watts
Ambient Temperature
Operating: +10 to +140 degrees Centigrade
(+ 50 to +104 degrees Fahrenheit)
Storage: - 40 to + 60 degrees Centigrade
(-40 to +140 degrees Fahrenheit)
Relative Humidity
Operating: 20% to 80% RH, non-condensing
Storage: 5% to 95% RH, non-condensing
Altitude
Operating: Sea Level to 10,000 feet
Storage: Sea Level to 30,000 feet
Standards
UL 478 and 114
CSA 154 and 143
FCC Part 15, Subpart J, Class B
Acoustic Noise Level
53 dBA maximum

IMPORTANT SERVICE INFORMATION
Dear Customer:
The following information is provided to allow us to better meet
your service needs. This information should be retained and
the directions followed as indicated.
In Case of IVouble
In the event that you have a problem with your unit and want
to have it repaired or require maintenance, contact the AT&T
Information Systems Service Organization by calling
800-922-0354 (unless special instructions have been
provided to you). The individual answering will provide you with
specific instructions depending on your individual needs and
maintenance contract options.
AT&T Information Systems offers five Equipment Maintenance
Agreements/Plans:
Business Day Service: Contracted; five day (M-F)
8a.m. to 5 p.m., Systems Technician dispatched to
customer location, ifrequired, for equipment repair.Time
charges apply outside coverage period.
Around-The-Ciock Service: Contracted; 24 hours a
day, seven days a week on major failures with Systems
Technician dispatched to customer location, ifrequired,
for equipment repair.
Dedicated Service: Technician dedicated to specific
location in one, two, or three-shift coverage, for 5,6, or 7
days/week.
Per Occurrence: Non-contracted; technician dispatched
to customer location, charged on time-and-material
basis.Time oniy is charged for contracted customers
who want service out of contracted hours.
Mail-In: Replacement part(s) will be mailed to the
customer. Upon receipt of the replacement part(s), the
customer repackages and returns the defective part(s) to
AT&Tin accordance with the instructions provided by
the AT&T Information Systems Services Hotline
(1-800-922-0354).

n

Personal Computer 6300.
PARTS CATALOG
AT&T Information Systems offers an AT&T Personal Computer 6300
parts catalog, which can be ordered, at no charge, by placing a toll-
free call to the National Parts Sales Center (1-800-222-PART). This
catalog details the major customer replaceable modules of the AT&T

1
2
3
User's Guide
Contents
Introduction
Welcome 1-2
Organization of the User's Guide 1-3
What You Will See and What You Should Do 1-3
Which Computer Do You Have? 1-4
What Every User Should Know
The Parts of Your Computer 2-2
All About Diskettes 2-16
Disk Drives 2-25
Hard Disks 2-29
All About Files 2-31
Getting Started Single Floppy
Users
What You Will Need 3-2
Inserting A Diskette 3-3
Seeing What Is on Your Diskette 3-10
Correcting Typing Mistakes 3-12
Preparing a New Diskette for Use 3-14
Copying Files 3-17
Starting the Computer Using
the Copied Diskette 3-19
The Benefit of Copying Your Diskettes 3-20
File Maintenance 3-21
Points To Remember 3-31

User's Guide
4
5
Getting Started Dual Floppy
Users
What You Will Need 4-2
Inserting a Diskette 4-3
Seeing What Is On Your Diskette 4-9
Correcting Tjqjing Mistakes 4-11
Preparing a New Diskette for Use 4-12
Copying Files 4-15
Selecting a Different Disk Drive 4-17
Starting the Computer Using the Copied
Diskette 4-18
The Benefit of Copying Your Diskettes 4-19
File Maintenance 4-20
Points to Remember 4-33
Getting Started Hard Disk
Users
What You Will Need 5-2
Inserting a Diskette 5-3
Seeing What Is on Your Diskette 5-9
Correcting Typing Mistakes 5-11
Preparing Your Hard Disk for Use 5-12
Starting Up Your Computer from the
Hard Disk 5-17
Selecting a Different Disk Drive 5-18
Copying Files 5-19
The Benefit of Copying Your Diskettes 5-2 2
File Maintenance 5-23
Points to Remember 5-34

6
User's Guide
What to Do If Something
Doesn't Work
Introduction 6-2
What Is "Diagnostics"? 6-3
How to Use Diagnostics 6-4
Automatic vs. Nonautomatic Mode 6-6
Testing Options 6-7
What Each Test Does 6-13
Selecting a Test 6-17
APPENDIX
A
Installing Additional Hardware
in Your System A-1
Glossary
Index

1
Introduction
• Welcome
• Organization of the User's Guide
• What you will see and what you
should do
• Which computer do you have?
1-1

Introduction
1-2
Welcome
Your AT&T Personal Computer 6300 enables you to
enter a new world of increased productivity, aworld
where you have the power to handle large, compli
cated tasks easily and quickly.
Both your AT&T Personal Computer 6300 and the
User's Guide are designed to he easy-to-use. Together
they provide you with the tools you want and need to
get up and running fast.
After using this guide you may choose to either ex
plore MS™-DOS further in the MS-DOS Guide or
begin to run asoftware application program.
MS™-DOS is a registered trademark of Microsoft®.