IBM Personal Computer AT User manual

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Hardware Reference
Library
Guide to
Operations

First Edition (March 1984)
This product could include technical inaccuracies or typographical errors. Changes are
periodically made to the information herein; these changes will be incorporated
in new
editions of the publication.
It is possible that this material may contain reference to, or information about, IBM
products (machines and programs), programming,
or services that are not announced in
your country. Such references or information must not be construed to mean that IBM
intends to announce such IBM products, programming,
or services in your country.
Products are not stocked at the address below. Requests for copies
of this product and for
technical information about the system should be made to your Authorized IBM Personal
Computer Dealer.
The following paragraph applies only to the United
States and Puerto Rico: A Reader's
Comment Form is provided at the back of this publication. If the form has been removed,
address comments to: IBM Corp., Personal Computer, P.O. Box 132S-C, Boca Raton,
Florida 33432. IBM may use or distribute any of the information you supply in any way it
believes appropriate without incurring any obligations whatever.
All specifications subject to change without notice.
© Copyright International Business Machines Corporation 1984

FEDERAL COMMUNICATIONS
COMMISSION RADIO FREQUENCY
INTERFERENCE STATEMENT
Warning: The equipment described herein has
been certified to comply with the limits for a
Class
B computing device, pursuant to Subpart J of
Part 15 of FCC rules. Only peripherals (computer
input/output devices, terminals, printers, etc.)
certified to
comply with the Class B limits may be
attached to the computer.
Operation with
non-certified peripherals is likely to result in
interference to radio and
TV reception. If
peripherals not offered by IBM are used with the
equipment, it is suggested to use shielded grounded
cables with in-line filters if necessary.
INSTRUCTIONS TO USER
This equipment generates and uses radio frequency
energy and if not installed and used properly, i.e., in
strict
accordance with the operating instructions,
reference manuals,
and the service manual, may cause
interference
to radio or television reception. It has been
tested and found to comply with the limits for a Class B
computing device pursuant to Subpart J of Part 15 of
FCC Rules, which are designed to provide reasonable
protection against such interference when operated in a
residential installation.
iii

If this 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.
1""""'\
• Relocate the equipment with respect to the receiver.
• Move the equipment away from the receiver.
• Plug the equipment into a different outlet so
that
equipment and receiver are on different branch
circuits.
• Ensure that card mounting screws, attachment
connector screws, and ground wires are tightly
secured.
Ensure that card slot covers are in place when no
card is installed.
1""""'\
•
If peripherals not offered by IBM are used with this
equipment, it
is suggested that you use shielded,
grounded cables with in-line filters,
if necessary.
If necessary consult your dealer service representative
for additional suggestions.
The manufacturer is not responsible for any radio or
TV interference caused by unauthorized modifications
to this equipment. It is the responsibility of the user to
correct such interference.
CAUTION
The product described herein is equipped with a
grounded plug for the user's safety.
It is to be used
in conjunction with a properly grounded receptacle
to avoid electrical shock.
1""""'\
iv

Preface
This Guide to Operations provides you with the
necessary information
to operate your IBM Personal
Computer AT. External tabs are provided for ease in
locating each section.
Here
is how your Guide to Operations manual is
organized:
"Section 1, Operating Your IBM Personal
Computer
AT"
This section provides operating instructions for your
system unit, keyboard and disk drives.
It also provides
operating procedures for options you may attach
to
your IBM Personal Computer AT.
"Section 2, Testing Your IBM Personal
Computer
AT"
This section contains step by step instructions that help
you determine if your system
is operating properly.
The section also contains information on the Setup
program.
"Section 3, Moving Your IBM Personal
Computer
AT"
This section contains the procedures required for both
short-distance and long-distance moves of your system.
v

"Appendix A, Keyboard Templates"
This section contains graphic layouts (templates) of all
the keyboards available to you. The templates allow
you to convert your keyboard to match various
languages.
"Appendix B, Serial Numbers"
This section shows you serial number locations of your
system
and provides a place to record them.
vi

Contents
SECTION 1. OPERATING YOUR IBM Personal
Computer AT
.............................. 1-1
Exploring Your IBM Personal
About Diskette and Drive
Operating the IBM Monochrome
System
Unit. . . . . . . . . . . . . . . . . . . . . . . . . . .. 1-5
Ordering a Key
......................... 1-6
Computer
AT ......................... 1-7
Keyboard
.............................. 1-1
Keyboard Height Adjustment ....... " 1-2
Typewriter Key
Area ............... 1-3
Numeric Keypad
................... 1-8
Cursor Control Keys
............... 1-13
Function Keys
.................... 1-15
Multikey Commands
............... 1-17
Diskette Drives
......................... 1-1
About Diskettes .................... 1-3
Compatibility
..................... 1-3
Write Protect
...................... 1-4
Diskette Care
...................... 1-5
Operating your Diskette Drive
........ 1-6
Fixed Disk Drives
...................... 1-1
IBM Monochrome Display ............... 1-1
Display
.......................... 1-1
IBM Color Display ..................... 1-1
Vertical Hold Adjustment ................ 1-2
Vertical Size Adjustment
................. 1-3
Graphics Printer
........................ 1-1
Introduction ....................... 1-1
Ribbon Installation ................. 1-2
Paper Installation
................... 1-8
Top-of-Form Setting
............... 1-17
Left Margin Adjustment ............ 1-18
Printer Controls and Lights
......... 1-21
Printer Self-Test
................... 1-23
Printer Modes
.................... 1-25
vii

Color Printer ........................... 1-1
Using Single Sheets of Paper or
Printer Programming
Introduction
....................... 1-1
Ribbon Removal ................... 1-2
Ribbon Installation
................. 1-7
Continuous Paper or Forms ........ 1-17
Considerations
.................... 1-8
SECTION 2. TESTING YOUR IBM Personal
Computer
AT .............................. 2-1
Testing Preparation ..................... 2-3
Introduction
....................... 2-3
Checking Electrical Connections
...... 2-5
Loading Your Diagnostics Diskette
........ 2-8
Error Examples
....................... 2-15
Setup
................................ 2-23
Diskette Format Procedures
............. 2-31
System Testing
........................ 2-40
Test 100
............................ 100-1
Test 200
............................ 200-1
Test 300
............................ 300-1
Test 400
............................ 400-1
Test 500
............................ 500-1
Test 600
............................ 600-1
Test 700
............................ 700-1
Test 900
............................ 900-1
Test 1000
.......................... 1000-1
Test 1100
.......................... 1100-1
Test 1200
.......................... 1200-1
Test 1300
.......................... 1300-1
Test 1400
.......................... 1400-1
Test 1500
.......................... 1500-1
Test 1700
.......................... 1700-1
Test 2000
.......................... 2000-1
Test 2100
.......................... 2100-1
Test 2900
.......................... 2900-1
Test 8000
.......................... 8000-1
Test 8020
.......................... 8020-1
Test 9000
.......................... 9000-1
System Checkout
................... 99999-1
viii

SECTION 3. MOVING YOUR IBM Personal
Computer
AT .............................. 3-1
Preparing to Move the System ............ 3-3
Short-Distance Move
................... 3-11
Long-Distance Move
................... 3-12
ForAllUnits ..................... 3-12
System Unit
...................... 3-12
Keyboard
........................ 3-14
IBM Displays
..................... 3-15
Setup
at Your New Location ............ 3-16
Appendix A. KEYBOARD TEMPLATES
...... A-3
Introduction ........................... A-3
French
................................ A-5
German
............................... A-7
Italian
................................ A-9
Spanish
.............................. A-II
U.K. English ......................... A-13
U.S. English
.......................... A-IS
Appendix B. Recording Serial Numbers ......... B-1
IBM Personal Computer AT
Serial Numbers ........................ B-1
Glossary ............................. Glossary-l
Index
.................................. Index-l
ix

Notes:
x

SECTION 1. OPERATING YOUR
IBM Personal
Compu ter AT
Contents
System Unit 1-5
Ordering a Key ........................... 1-6
Exploring Your IBM Personal Computer AT ..... 1-7
Keyboard ................................ 1-1
Keyboard Height Adjustment ............. 1-2
Typewriter Key Area
.................... 1-3
Numeric Keypad
....................... 1-8
Cursor Control Keys
................... 1-13
Function Keys
........................ 1-15
Multikey Commands
................... 1-17
Diskette Drives ........................... 1-1
About Diskettes ....................... 1-2
About Diskette and Drive Compatibility ..... 1-3
Write Protect
.......................... 1-4
Diskette Care
......................... 1-5
Operating your Diskette Drive
............ 1-6
Fixed Disk Drives ......................... 1-1
IBM Monochrome Display ................... 1- 1
Operating the IBM Monochrome Display .... 1-1
IBM Color Display ........................ 1-1
Operating the IBM Color Display .......... 1-1
Vertical Hold Adjustment
................ 1-2
Vertical Size Adjustment
................. 1-3
Operating Your IBM Personal Computer AT 1-1

Graphics Printer ......................... . 1-1
Introduction ......................... . 1-1
Ribbon Installation
.................... . 1-2
Paper Installation ..................... . 1-8
Forms Thickness Control Lever
...... . 1-16
Top-of-Form Setting .................. . 1-17
Left Margin Adjustment
............... . 1-18
~.
Printer Controls and Lights ............. . 1-21
Printer Self-Test
..................... . 1-23
Printer Modes
....................... . 1-25
Printer Control Codes
.............. . 1-26
Color Printer ............................ . 1-1
Introduction ......................... . 1-1
Ribbon Removal
...................... . 1-2
Ribbon Installation
.................... . 1-7
Using Single Sheets of
Paper or Continuous
Paper or Forms ...................... . 1-17
Continuous Paper or Forms Operation
..
1-18
Forms Thickness Control Lever
...... . 1-30
Control Panel Operation with Continuous
Paper or Forms ................... . 1-32
Single-Sheet Operation
............. . 1-49 "...-"
Forms Thickness Control Lever
...... . 1-61
Control Panel Operation with Single Sheet
Paper ............................ 1-62
Ribbon-Color Knob Adjustment
....... 1-78
Printer Self-Test
................... 1-80
Printer Self-Test Sample Printout
...... 1-81
Printer Programming Considerations
...... 1-82
DIP Switch Settings ................. 1-83
Printer Control Codes
............... 1-88
Printing in Color
.................. 1-123
Voltage Selection
.................. 1-131
1-2 Operating Your IBM Personal Computer AT

IMPORTANT
If your system has not been installed, go to CHART 1,
Cabling Your System or CHART 2, Installing Your
Internal Options. When you have completed installation
of your system return to this manual for operating
procedures.
Operating Your IBM Personal Computer AT 1-3

Notes:
1-4 Operating Your IBM Personal Computer AT

System Unit
The main component of your IBM Personal Computer
AT
is the system unit. It does all of the processing and
controls the operations for your system through a set
of
instructions called a program. The IBM Personal
Computer AT comes with an installed program
language called IBM BASIC.
The Key Lock deactivates the keyboard and locks the
cover
on for security. You can lock the system whether
the power is
on or off. Turn the key clockwise to lock
the system
or counterclockwise to unlock it. The key
may
be removed in either position.
When the system unit's power is on, the green
power-on indicator light is on.
Locked
Unlocked
Position
Position
Keylock
100 1IIIIIIIIIrnlilllllllllllllllllllilii db:+;
System Unit 1-5

Ordering a Key
Information for ordering replacement keys and their
cost may be obtained
by writing to the address below.
Be sure
to include the lock number (#1501419) and
the serial number, which is attached to the key ring.
Key Serial Number
Chicago Lock Company
4311 West Belmont Ave.
Chicago,
11. 600641
You are responsible for the security
of your system.
1-6 System Unit

Exploring Your IBM Personal Computer
AT
Included with your Guide to Operations is a diskette
program called "Exploring the IBM Personal
Computer
AT". This program is designed to help you understand
and use the functions
of your IBM Personal Computer
AT. Get the Exploring IBM Personal Computer AT
diskette located at the back of this manual, and
continue with the next page.
System
Unit 1-7

1 Be sure your system unit's power is off.
2 Rotate diskette drive A lever counterclockwise
to
open
the diskette drive.
Diskette Drive Lever
\\\\\\\\
1-8
System Unit