Guide to Operations

LIMITED WARRANTY — IBM Personal Computer JX
The International Business Machines Corporation warrants this IBM
Personal Computer Product to be in good working order for a period of one
year from the date of purchase from IBM or an authorized IBM Personal
Computer dealer. Should this Product fail to be in good working order at
any time during this one-year warranty period, IBM will, at its option,
repair or replace this Product at no additional change except as set forth
below. Repair parts and replacement Products will be furnished on an
exchange basis and will be either new or used. All replaced parts andProducts become the property of IBM. This limited warranty does notinclude service to repair damage to the Product resulting from accident,
disaster, transportation, misuse, abuse, or non-IBM alteration of or
attachment to the Product.
Limited Warranty service may be obtained by delivering the Product during
the one-year warranty period to an authorized IBM Personal Computer
dealer providing proof of purchase date. If the Product is mailed or shipped,
you are responsible to assume the risk of loss or damage in transit, toprepay mailing or shipping changes to the warranty service location and touse the original shipping container or equivalent. Contact an authorized
IBM Personal Computer dealer or IBM for further information.
THE FOREGOING WARRANTIES ARE IN LIEU OF ALL OTHERWARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
IF THIS PRODUCT IS NOT IN GOOD WORKING ORDER, YOUR
SOLE REMEDY SHALL BE REPAIR OR REPLACEMENT. IN NO
EVENT WILL IBM BE LIABIE TO YOU FOR ANY DAMAGES,INCLUDING ANY LOST PROFITS, LOST SAVINGS OR OTHERINCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF
THE USE OF OR INABILITY TO USE SUCH PRODUCT, EVEN IF
IBM OR AN AUTHORIZED IBM PERSONAL COMPUTER DEALER
HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES,OR FOR ANY CLAIM BY ANY OTHER PARTY.
THIS LIMITED WARRANTY AND LIMITATION OF LIABILITY
VOIDS AND SUPERSEDES ANY OTHER WRITTEN LIMITEDWARRANTY BY INTERNATIONAL BUSINESS MACHINESCORPORATION WHICH IS INCLUDED WITH THE PRODUCT.

Guide to Operations

115000-0IBm.))(4personal computerFirst Edition (August 1985)
Changes are periodically made to the information herein; thesechanges will be incorporated in new editions of the publication.
It is possible that this material may contain references 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 inyour country.
© Copyright International Business Machines Corp. 1984, 1985

Preface
This manual is written for those who are using a personal
computer for the first time. The following are explainedin easy-to-understand terms.
•

JX Installation Procedures•

Keyboard Operations•

Starting a Program•

Characteristics of JX•

Problem Delermination Proceduresiii

How to Use this Manual

Chapter 1. Setting up your JX.

Let's take it out of
the box and assembleit.
Chapter 2. Getting started.

Do you know how to
use the keyboard?

Chapter 3. The keyboard.

Did you purchaseprograms?

Chapter 4. Running a program.

What kind of a computer is JX?

Chapter 5. Characteristics ofHave you purchased
the options?

Chapter 6. Installing and oper-

What is wrong?
What shall I do?

iv

JX.

ating the options.

Chapter 7. Problem Determination Procedures.

Contents
Well, let's start
Chapter 1. Setting up Your JX
Setup Instructions
Be Careful of the Following

1-1
1-3
1-9

Turn ON the JX
Chapter 2. Getting Started

2-1

Chapter 3. The Keyboard
Introduction
Using the Keyboard
Centering the Information on the Screen
Keyboard Modes
System Reset
Additional Keyboard Features

3-1
3-4
3-5
3-8
3-11
3-21
3-22

4-1
Chapter 4. Running a Program
How to Start a Program
4-3
A Program on a Cartridge
4-4
What You Need4-4
How to Insert and Remove a Cartridge
4-4
A Program on a Cassette Tape
4-5
What You Need ........... .......... . .... . ......... ..4-5
How to Start a Program in a
Cassette Tape
4-5
A Program on a Diskette
4-8
What You Need
4-8
How to Start a Program on a Diskette
4-8
If the JX Power is ON
4-8
If the JX Power is OFF ......... ................. 4-9

Let me Introduce You to the JX
Chapter 5. Characteristics of JX
System Unit
Keyboard
Display

5-1
5-3
5-4
5-5

Chapter 6. Installing and Operating the Options ..6-1
System Extension
6-3
How to Connect a Joystick
6-4
Operation of Diskette Drive
6-5
Functions of 3.5 inch Diskette
6-5
Write-Protect Switch
6-6
Precautions in Use
6-6
Storing the 3.5-inch Diskette
6-6
What You Shouldn't Do
6-7

What's the Matter?
Chapter 7. Problem Determination Procedures .....7-1

vi

Well, let's start!

..,,

Chapter 1. Setting up Your JX

Chapter 1. Setting up your JX

1-1

1-2

Setup Instructions

After completing the setup, insert this manual in Chapter
1, "Setting up your JX" in the Guide to Operations.

115001-0
Chapter 1. Setting up your JX

1-3

Let's get ready!
Three models are arailable.
Which is your model?
Model 1Model 2Model 3

System Unit

0

0

0

3.5 inch Diskette Drive

—

1

2

Keyboard

A

A

A

64KB RAM Card

2.

0

0

128KB RAM Card

A

A

0

Memory Capacity

64KB

128KB

256KB

: Standard
A : Option
Note: all models can be purchased with either the compact or full keyboard.

1-4

1

Make sure that you have the following items.

11111111

nigu•
System Unit

I, 0

1 1

I 01
o

I

I

1

I

This Book

Guide to Operations
BASIC

Chapter 1. Setting up your JX

1-5

1-6

2

Open the battery compartment cover located on thebottom of the keyboard, by moving the cover in the
direction indicated by the arrow.
Insert the batteries in the direction indicated3

Make sure that the system unit power switch is OFF.

4

Connect the display to the system unit.
Connect the display according to the installation
procedures in the Display Operator's Guide. Then,
go to Step 5.

Connect the power cords to the system unit and thedisplay.

6

Insert the other end of the power cords into thereceptacles.

Setup is now completed. Do not turn on the JX
power switch yet.
Read, "Be Careful of the Following!", before proceeding to Chapter 2.

Chapter 1. Setting up your JX

1-7

1-8

Be Careful of the Following
When you use the JX, make sure:
1. That you use a 200-240V, 50/60Hz power outlet.

2. That you do not install the system upside down or on
its side.

3. That you do not use it in a hot place.

4. That you avoid high humidity and choose a wellventilated area.

Chapter 1. Setting up your JX

1-9

Turn ON the JXChapter 2. Getting Started

Chapter 2. Getting Started

2-1

The distance between the keyboard and the system unit
should be less than five meters when not using the keyboard cable. The JX may not operate if the infrared rays
are obstructed.

II

Well let's start the JX.
1. First, turn on the display power switch.

2. Then, turn on the system unit power switch.

1111- 1111N -._2-2

The following screen will appear.

This screen is called the Test Screen. This screen is displayed for approximately 10 seconds, while the JX checks
the system unit using the built-in self-disgnostics. If it
finds nothing wrong, it makes a beep sound to let you
know that everything is normal and the test screenchanges to the initial BASIC screen.

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IBM Corp. 1981, 1982, 1983
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If the initial BASIC screen is not displayed, or if
ERROR is displayed on the test screen, refer to Chapter
7, "Problem Determination Procedures".

Chapter 2. Getting Started

2-3

3. Adjust the contrast and the brightness of the display
to your liking.

11111111111111

1

11111111111

4. If you want to tilt your keyboard, set up the legs on
the bottom.

2-4Chapter 3. The Keyboard

Chapter 3. The Keyboard 3-1

3-2

Contents of Chapter 3
Introduction

3-4

Using the Keyboard

3-5

Centering the Information on the Screen

3-8

Keyboard Modes

3-11

System Reset

3-21

Additional Keyboard Features

3-22

Chapter 3. The Keyboard 3-3

Introduction
This section shows you how to use your JX keyboard tooperate your JX.
When you press a key, your keyboard sends a message toyour JX. The program you use tells your JX what to dowith that message. For instance, when you are playing agame, your "J" key may make a frog jump. But when
you are using a program to write a letter to your friend,that same key simply types the letter "J".

3-4

Using the Keyboard
All keys on the keyboard except some control keys, aretypematic. This means that each key repeats as long as
you hold the key down.
You can select one of these keyboards:

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DEELEOMIC1000911FEE
DOOMMEEMEMEASIGIEMEDEVEMEEME3501i

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222

Gann SEEMS

1B21222221222 21

EEBEEETEMEEE HEM
000000000000 .0_
MOMETIMEEEEIMUEIU
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2121

The positions of the keys are much like those of a standard typewriter. Most keys on the keyboard have an uppercase (capital) letter and a lowercase (small) letter.
Your keyboard has some extra keys that a typewriterdoesn't have.
t Enter

L

This is the Enter key.

Chapter 3. The Keyboard 3-5

Pit Sc

4—Backspace

B

This is the Print Screen (Prt Sc) Key. If you
have a printer and you press and hold theShift key and then press the Prt Sc key, theprinter prints a copy of the information that ison the screen.
This is the Backspace key. When pressed, it
erases the character to the left of the cursor
and moves the cursor one position to the left.

The zero "0" and the letter "0" are seen as
two different characters by your JX. Do not
use the zero when you want the letter "0" toappear.
The number one "1" and the letter "1" arealso seen as two different characters by yourJX. Do not use the number one (1) key when
you want the letter "1" to appear.

t

When pressed, the Space bar creates a blankon the screen and moves the cursor to theright.
/ Esc

This is the Escape (Esc) key.

I
ft 14— k

3-6

This is the Tab key.

These are the cursor control keys.
Pg Up

Pg Dn

In most programs, the Cursor Up key moves
the cursor one line up.

In most programs, the Cursor Down key
moves the cursor one line down.

In most programs, the Cursor Right key
moves the cursor one position to the right.
Pg Dn

In most programs, the Cursor Left key moves
the cursor one position to the left.
Pg Up

Chapter 3. The Keyboard 3-7

Centering the Information on the Screen
If the writing on your screen is not centered, you canmove it.

The IBM PC jr Basic
Version J1.00
IBM Corp. 1981, 1982, 1983
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The writing on this screen needs to be moved to theright.

3-8

If the writing on your display's screen needs to be moved
to the right, you can do this by pressing and holding

Ctrl

and

Alt

and then pressing
Pg Dn

Each time you press the cursor right key while holding
Ctrl and Alt, the writing on the screen moves one space
to the right.
When the writing on the screen is centered, release all
three keys.

Chapter 3. The Keyboard 3-9

The IBM PC jr Basic
Version J1.00
IBM Corp. 1981, 1982, 1983
XXXXX Bytes freeOK

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The writing on this screen needs to be moved to the left.
You can do this by pressing and holding

Ctrl

and

and then pressing,Pg UpEach time you press the cursor left key while holding Ctrl
and Alt, the writing on the screen moves one space to the
left.

3-10

Keyboard Modes
The keyboard can be placed into these modes:•

Regular mode•

Shift mode•

Caps Lock mode•

Alternate mode•

Control mode•

Function mode•

Numeric Lock mode

Let's see how the keys change for each of these modes.

Chapter 3. The Keyboard 3-11

Regular Mode
When you turn your JX on, the keyboard is'in the Regular mode. The keyboard remains in the Regular mode until you change the mode. Regular mode means that allalphabetic keys are in lowercase.

3-12

Shift Mode

There are two shift keys on your keyboard. In the Shiftmode, all keys type in uppercase.
To put the keyboard into the Shift mode, press and hold
either Shift key and then press the key you have chosen
to work with it.
The key you have chosen must be pressed while the Shift
key is held down.
Shift mode ends and Regular mode returns when you remove your finger from the Shift key.
When you first turn your JX power on, the IBM Personal
Computer BASIC Message Screen appears. Using thisscreen and the following instructions, try your keyboard.

Chapter 3. The Keyboard 3-13

Remember, when you first turn your JX power on, yourkeyboard is in lowercase.
The lower character on the key top shows the lowercase
numbers and symbols.
The upper character on the key top shows the uppercase
symbols.

For instance, look at the key in the top row marked

4

Press it.
The unmber 4 appears on the screen.
Now press and hold down the Shift key.

Then press

4

A $ now appears.

3-14

Caps Lock Mode

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To put the keyboard into the Caps Lock mode, press theCaps Lock key once and release it.
In the Caps Lock mode, the letters A through Z appear
in uppercase.
The keyboard stays in the Caps Lock mode until youpress Caps Lock again.
If you want to type a lowercase letter or a symbol, while
the keyboard is in the Caps Lock mode, you have topress the Shift key.
You can type lowercase characters while in the Caps
Lock mode by pressing and holding the Shift key andthen pressing the key for the character you have chosen
to appear in lowercase.
To cancel the Caps Lock mode, press Caps Lock again
and release it. Your keyboard then returns to the Regularmode.

Chapter 3. The Keyboard 3-15

Alternate Mode

Some keys will display different symbols when used in
combination with the Alternate (Alt) key (Alternatemode), depending on functions that are determined by
the program you use.
The key you have chosen to use with Alt must be pressed
while the Alt key is held down.
Alternate mode ends when you stop pressing the Alt key.
Your keyboard then returns to the Regular mode.

3-16

Control Mode
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The Control key (Ctrl) on the left side of your keyboard
performs functions that are determined by the program
you use. To put the keyboard in Control Mode, press andhold the Control key and then press the key you havechosen to work with it. Control Mode ends when you
stop pressing the Ctrl key.

Chapter 3. The Keyboard 3-17

Function Mode

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To use the Function mode, first press and release the Fn
key. Then press the key you desire. After you press thekey, the Function mode is canceled.
If you have more than one function to perform, you maypress and hold the Fn key while pressing the other keys.

-------- -------------

1

V
47.7"1Pour

3-18

If you press the Fn key by accident, press the Shift key tocancel the Function mode.
You can lock your keyboard in the Function mode bypressing and holding the Shift and Fn keys and thenpressing the Esc key. When locked in the Functionmode, all keys perform their functions without needing
the Fn key pressed first. To unlock the Function mode,press and hold Shift and Fn and then press Esc.

Chapter 3. The Keyboard 3-19

Nomeric Lock ModeTo put the keyboard into Numeric Lock mode, press andthen press fl andhold
The keyboard stays in Numeric Lock mode until
is pressed again.
This mode is not required to enter numbers on the JX
keyboard. Both the numeric keys on the top row of the
keyboard, and the numeric keys on the numeric keypadcan be used to enter numbers while in Regular mode.
Numeric Lock mode should be used when you want toenter ASCII codes. When in Numeric Lock mode, press
followed by three numeric characters to enter each
ASCII code. The numeric keys on the top row must be
used to enter the numeric characters. The numeric keys
on the numeric keypad can not be used.

3-20

System Reset
While using your JX there will be many times that you
will want to perform a system reset or reset, (reset andsystem reset mean the same thing).
There are two ways to reset your JX while you are using
it. The first way is to turn your JX power off, wait fiveseconds, then turn power on. The second way is to use
your keyboard as follows:

Press and hold

Then press

Ctrl

Delete it

andRelease all three keys.

Some things that you might use a reset for are:••Starting a program over again.
Loading a program from a diskette.

Chapter 3. The Keyboard 3-21

Additional Keyboard Features
Keyboard Legs
Your JX keyboard is equipped with adjustable legs.
You can find the position that is comfortable to you, by
typing on the keyboard with the legs up and then down.
Keyboard Clicker
Your JX has a feature called the Keyboard Clicker.
When this feature is turned on, every time you press a
key you will hear a clicking sound. To turn the Keyboard
and, and then press
Clicker on, press and hold (isTo turn the clicker off, press and hold 1
and 1 A, f and then press

3-22

Keyboard Cable Option Guide
Connect the Keyboard cable to the back of thesystem unit.
Position the keyboard cable as indicated in thedrawing.
Connect the other end of the keyboard
cable to the back of the keyboard.

Back of the System Unit
Top

Back of the Keyboard

115014-0

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First Edition (August 1985)
C) Copyright International Business Machines Corporation 1984. 1985

IBM Americas/Far East Corporation

Chapter 4. Running a Program
You have mastered the keyboard operations, so now you
can communicate with the computer.
This chapter explains how to start various programs.

Chapter 4. Running a Program 4-1

Contents of Chapter 4
How to Start a Program

4-3

A Program on a Cartridge
What You Need . ......
........... . ........
How to Insert or Remove a Cartridge

4-4
4-4
4-4

A Program on a Cassette Tape
What You NeedHow to Start a Program on a Cassette Tape

4-5
4-5
4-5

A Program on a Diskette
4-8
What You Need
4-8
How to Start a Program on a Diskette ......... ... . 4-8
If the JX Power is ON
4-8
If the JX Power is OFF
4-9

4-2

How to Start a Program
Most programs are sold on cartridges, cassette tapes, or
diskettes.
Some JX programs require options. Ask the dealer whenbuying a program if any options are required.
The following section describes:
1. How to start a program on a cartridge.
2. How to start a program on a cassette tape.
3. How to start a program on a diskette.
Refer to the users manual which comes with your program for instructions on starting it.

Chapter 4. Running a Progam 4-3

A Program on a Cartridge
What You Need•

A cartridge containing a program

How to Insert and Remove a Cartridge.
•

A cartridge can be inserted and removed at anytime.
When a cartridge is inserted or removed, JX will bereset automatically.

•

JX has two cartridge slots as illustrated.
Insert a cartridge in either of the slots, making surethat the label on the cartridge faces up. Push in the
cartridge until you hear a clicking sound.

•

The cartridge program will start automatically.

Cartridge Slot

4-4

A Program on a Cassette Tape
What You Need•••A cassette tape containing a program.
A cable (option) for the cassette tape recorder.
A cassette tape recorder or a data recorder.

Note: We recommend the use of a cassette tape recorder that meets the following conditions:a. It can be started and stopped remotely
by the computer.
b. It has a tape counter.

How to Start a Program in a Cassette Tape
I. Insert one end of the Cassette-tape cable into theconnector which is labelled "Cassette".

Chapter 4. Running a Program 4-5

2. Insert the other end of the cassette-tape cable into
the cassette tape recorder as shown below.
To MIC terminal
To EAR terminal

To REM terminal

3. Insert the cassette tape containing the program in thecassette tape recorder. Adjust the volume control to a
relatively high position in order to prevent sound distortion.
Note: Make sure that the cassette tape has been rewound.
4. Make sure that OK is displayed on the screen.
If the cassette recorder has a remote terminal feature,
go to step 6.
5. Press the PLAY Button.
If a remote terminal is connected, the computer will
start or stop the cassette tape recorder. It cannot be
operated by pressing the PLAY Button.

4-6

6. Type the following:
RUN "CAS1: Program Name"
The program name is written on the cassette tape orin the program user's manual.
Example: To start a program with the name
"DEMO", type the following.
RUN "CAS1: DEMO"
7. Press ..1 J key
When a remote control feature is not connected,press PLAY .
Soon, the program will begin to run.
To terminate the program, press and hold
( Alt 1 and then press ( Delete

Ctrl

and

The contents of each program is described in detail in theuser's manual.

Chapter 4. Running a Program 4-7

A Program on a Diskette
What You Need•A diskette containing a program

How to Start a Program on a Diskette.
Note: When the red light on the front of thediskette drive is ON, JX is reading data fromthe diskette or writing data onto it. DO NOT
remove the diskette from the diskette driveat this time.
If the JX Power is ON:

1. Insert the diskette into the diskette drive until itclicks.

2. Press and hold ( Ctrl
Delete4-8and ( Alt

) and then pressIf the JX Power is OFF:
1. Insert the diskette into the diskette drive until itclicks.

2. Turn the JX power ON.

Chapter 4. Running a Program 4-9

Let me Introduce you to JXChapter 5. Characteristics of JX•( e...-1...',I ....
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Chapter 5. Characteristics of JX

5-1

Contents of Chapter 5
SystemUnit . .................. . ....... ......................... ....5-3

5-2

Keyboard

5-4

Display

5-5

System Unit
The system unit has a 16-bit microprocessor. The memory
capacity can be expanded from 64 KB to 512 KB.
It has a large variety of standard functions, such as aneight-octave, triple-chord sound generator.

CPU: 8088 (4.77 MHz)
System ROM: 96KB
Standard memory capacity: 64KB (Max. 512 KB)
Keyboard Interface
Display Interface
Joystick Interface
Audio Interface
Parallel Interface
Cassette Interface
Light-pen Interface

Chapter 5. Characteristics of JX

5-3

Keyboard
The JX supports two keyboards: a compact keyboard
which has 79 keys and a full keyboard which has 98 keys,
the keyboard can be used either with or without akeyboard cable.

Compact Keyboard

MESE

22 2 2 2BILIVIDOMEMOORME1
DEIODOORTEOMP110-••• nonennoongomffin
E

Full keyboardFAa ail Miro

11114111 2222 a 2

minifinETIMEEICIFI11HEE
nonnononnoceLi I
00000000000MffillE5-4

lnseriDisplay
The IBM 5515 display supports 16 colors. The display isof medium resolution and has a speaker for audio output.
The resolution specifications of the display are given
below.

Resolution

Text
Mode

Normal-width
Character

80 x 25

Double-width
Character

40 x 25

Graphic Mode

640 x 200
320 x 200
160 x 200

Chapter 5. Characteristics of JX 5-5

Display Operator's Guide
This manual describes the procedures for installingand operating the display.
This manual consists of the following.
1
2
5
9
11
12

Parts List
Installation Instructions
Testing after Installation
Operating Procedures
Precautions
Specifications of the Display
After completing the installation, insert this manualin the Chapter 6, "Installing and Operating the
Options," of the Guide to Operations.

1150024)

First Edition (August 1985)
Changes are periodically made to the information herein; thesechanges will be incorporated in new editions of the publication.
It is possible that this material may contain references 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.
0 Copyright International Business Machines Corp. 1984, 1985

Parts List
IBM5515 12-inch Color Display.

If the display was damaged during shipment, pleasecontact your dealer.

Installation Instructions
1

2

Before connecting the display to the system unit,
turn the system unit power off. Then, turn the otherdevice power off and remove the power cord fromthe power outlet.

2

After connecting the display cable connector to thesocket labeled "Display" on the back of the system
unit, tighten the screws on both sides of the connector.
Note: The connector cannot be inserted unless it is positioned correctly.

33

Insert one end of the display power cord into theconnector on the back of the display, and the otherend into a power outlet.

Your display is now installed.
Power Switch and Power Light
Press the power switch to turn the power ON; press
it again to turn the power OFF. The power lightremains ON while the switch is ON.

4

Testing after Installation
Generally, after installing parts, they must be tested toensure that they have been installed currently.
JX executes a self-diagnostic test automatically when
the system unit is turned ON. Therefore, no special
operation is necessary for post-installation testing.

1

Take out any cartridges and diskettes inserted.

5

2

Turn the display power on.
Then turn the system unit power on.

The self-diagnostic test starts automatically. Whenthe display is installed correctly, the following
operations will take place.

6

The test screen appears.

A single beep sounds.

"Beep"((( ((ItThe BASIC initial screen
is displayed.
TheIBMPCjrBasic
Version J1.00
IBM Corp. 1981, 1982, 1983
60566 Bytes freeOK

ANA 2RUNP 3LOADm ,SAVEN SCONT.,7

If the following error screen is displayed, refer to"Chapter 7, Problem Determination Procedures" in the
Guide to Operations.

Adjust the brightness and the volume on the display
according to the operating instructions on the following
page.

8

Operating Procedure

Name of
Knob

PurposeOperation

Brightness

Adjust the brightness ofthe characters symbols,and graphics displayed on
the screen.

Turn the knob clockwise to
obtain a brighter screen.
Turn it counterclockwise to
obtain a darker screen.
Adjust the screen to the desired brightness.

Adjust the volume of thesound from the built-in
display speaker.

Turn the knob clockwise toincrease the volume.
Turn it counterclockwise to
decrease the volume.

VolumeRemarkNote 1

Note 2

Notes:
1. If the screen is too bright, the characters may lookblurred. In this case, darken the screen slightly.
2. If the sound is too loud, it may become distorted.

Brightness Volume

10

Precautions
1. To turn the power switch on after turning it off,
wait at least three to four seconds before turning it
ON again.
2. If the surface of the display screen is dirty, clean
it with a soft cloth. If required, moisten the clothwith water or a mild detergent. Never use organic
solvents, such as alcohol or benzene.
3. Never put anything on top of the display.

11

Specifications of the Display

Resolution (dots)

640 X 200

Dot pitch (mm)0.45

Input terminal

15 pins (D-SUB male)

Maximum
Display Capacity

Alphanumerics

Number of Displayable Colors
Operating
Environment

Weight16 colors
5 — 35°C

Humidity

20 — 80%

Rated Power Consumption
Dimensions (mm)80 characters X 25 lines

Temperature

Power

12

HE1

2E1

Model

200-220V(50Hz)

230-240V(50Hz)
50W

312 X 322 X 377(H) (W) (D)Appr. 9.5kg

111111111MO
00=

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IBM Americas/Far East Corporation

Chapter 6. Installing and Operating the
Options

Chapter 6. Installing and Operating the Options

6-1

Contents of Chapter 6

6-2

System Extension

6-3

How to Connect a Joystick

6-4

Operation of Diskette Drive
3.5-inch Diskette
Write-Protect Switch
Precautions in Use
Storing the 3.5-inch Diskette
What You Shouldn't Do

6-5
6-5
6-6
6-6
6-6
6-7

System Extension
If you have bought options, follow the instructions inmanual of each option to install options.
Insert the each option manual at the end of this chapter.

Chapter 6. Installing, and Operating the Options

6-3

How to Connect a Joystick1

Turn off the system unit power.

2

Connect the joystick cable to one of the joystickconnectors on the back of the system unit.

The joystick has been connected.
6-4

Operation of Diskette Drive
Both the 3.5-inch and 5.25-inch diskettes can be used on
JX.
To use a 5.25-inch diskette, the expansion unit and the
5.25-inch diskette drive are necessary.
The operations of a 5.25-inch diskette are described in"5.25-inch Diskette Drive Option Guide."

3.5-inch Diskette
Note: Before using a diskette, be sure to read andobserve the instructions given below.
A diskette is a thin disk (magnetic storage medium) in a
protection jacket. It stores data and programs.
Label

Write protect switch

Shutter

Chapter 6. Installing and Operating the Options

6-5

Write-Protect Switch
This switch enables or disables writing on a diskette depending on its position.

Precautions in Use
The diskettes must be handled carefully because they canbe easily damaged. Careless handling may lead to loss of
information that is recorded on the diskette or preventthe recording of new information.
While the diskette drive light is ON, do not remove thediskette or turn the power switch on the system unit off.
The file being used may be destroyed.

Storing the 3.5-inch Diskette
If diskettes are stored horizontally, do not stack morethan 11 diskettes in one container. If diskettes are stored
vertically, support them to prevent them from slanting or
bending. Protect the diskettes from dust and lint.

6-6

What You Should Not Do
Do not place a magnetized object near a diskette.
If a diskette is placed in a magnetic field, the data may belost. A magnetic field can exist near a fluorescent lamp, adesk calculator, a tape recorder, a speaker, a driver, acopy machine, a telephone, etc.

Write on the label before sticking it on the diskette.
If the label is already on the diskette, use only a felt tip
marker.

Chapter 6. Installing and Operating the Options

6-7

Do not erase on the label of a diskette. Do not use an
eraser on or near the diskette. It's residue may damage
the diskette.

Do not open the diskette shutter and touch the recording
surface directly with your hand. Perspiration can damage
the diskette.

6-8

Do not place anything heavy on the diskette.
It can damage the diskette surface.

Do not use clips or rubber bands on a diskette.
Do not bend a diskette.
Place a diskette on a flat surface and make sure that it
does not bend.

Chapter 6. Installing and Operating the Options 6-9

Do not try to rub the diskette surface to clean it. Do not
use a dirty diskette.

Do not put a diskette near an ash tray or near foods; they
can damage the diskette.

6-10

Do not put a diskette in a hot place over 51°C. Do not
expose it to direct sunlight.

Warning
If a diskette has been left in a temperature outside therange of 10°C-51°C, leave the diskette at room temperature for about 5 minutes before inserting it into the diskette drive.

Chapter 6. Installing and Operating the Options

6-11

6-12

What's the Matter?

RS-232C Card Option Guide
This manual explains the procedures for installing the
RS-232C card and the method for diagnosing whether
it is functioning correctly.
The JX System has been designed so that the RS-232C
card can be easily installed. You need no special knowledge, you need only to follow the instructions in thismanual.
This manual consists of the following:
Parts List
Tools Required
Installation Instructions
Testing after Installation
Appendix

1
2
3
10
16

After completing the installation, insert this manual in
Chapter 6, "Installing and Operating the Options" in
the Guide to Operations.

115010-0

First Edition (August 1985)
Changes are periodically made to the information herein; thesechanges will be incorporated in new editions of the publication.
It is possible that this material may contain references 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.
0 Copyright International Business Machines Corp. 1984, 1985

Parts List
Before starting to install the RS-232C card, make surethat you have all the following parts.

❑

RS-232C Card

❑

Screw

If any of the parts are missing or have been damaged
during shipment, please contact your dealer.

For connection to a communication line, the following
parts are available.
❑

Wrap Connecter❑

RS-232C Cable

1Tools Required• Medium-size Phillips screwdriver2Installation Procedure
1

Turn the system unit power off and remove thepower plug from the power outlet.
Turn the other peripheral devices power off(display, printer, etc.) and remove their powerplugs from the power outlets.

Power
SwitchFront of System Unit3

2

Remove the top cover from the top unit (system
unit or expansion unit).

(1) Loosen the two screws on the back of the unit byturning them to the left with a screw driver. The
screws cannot be removed, but they must beloosened completely.
Screw Positions(2) Insert a coin into the groove on the back of thecover and lift it using a coin as a lever. Remove
it by pulling it towards the back.

4

3

If the expansion unit is installed, disconnect it.
If the expansion unit has an expansion board,
disconnect it by referring to the Expansion Board
Option Guide before performing the following
procedures.

(1) Remove the expansion unit power plug from thesystem unit. Then, loosen the two screws on theback by turning them to the left with a screw
driver. The screws cannot be removed, but theymust be loosened completely.

(2) Carefully lift the expansion unit and remove it bypulling it towards the back.

5

4

Remove the right cover plate on the back of thesystem unit by pushing it from the inside.
Note: If another option card is already installed andobstructs your work, remove that card, but besure to reinstall it in its original position after installing the RS-232C card.

Back of System Unit

6

5

Insert the RS-232C card firmly in the system unit,
passing the connector on the card through the opening from which the cover plate (window for thecable) was removed.
0 Align the metal fitting on the top of the opening to the metal fitting on the top of the RS232C card.
® Push the connector on the bottom of the card
down into the connector on the system unit.
0 Fasten the card to the system unit with thescrew provided.

Connector positionsof System Unit
For 128KB RAM Card
For 64KB RAM Card

For RS-232C Card
Back of System Unit
7

If the system had the expansion unit, reinstall it byreferring to the Expansion Unit Option Guide.
If the system has the expansion board, reinstall it byreferring to the Expansion Board Option Guide.

6

Close the top cover. First, press the top coveragainst the front of the unit and lower it. Then,tighten the screws on the back of the unit.

Screw Positions

The RS-232C card is now installed.

7

If you have an RS-232C cable, connect one end of
it to the cable connector on the RS-232C card asshown.
Fasten the cable cannector by turning the upper andlower screws clockwise.

W5

0RS-232C Cable
Back of System Unit

9

Testing after Installation
This section describes how to verify the RS-232C cardis installed correctly and operates normally. The sameprocedures can be used when a problem occurs whenusing the RS-232C card.
The JX System executes a self-diagnostic test automatically.

1

10

After installing the RS-232C card, connect the display to the system unit, insert the power plugs intoa power outlet, turn the power on.

2

Look at the screen that is displayed.

If the following error message is displayed at thebottom of the screen, the RS-232C card is notinstalled correctly. In this case, reinstall the card,following the installation instructions.
If the problem remains, it may be a problem with thecard. Refer to Chapter 7, "Problem Determination Procedures" in the Guide to Operations.

Error Message

If no error message is displayed, the RS-232C card has
been installed correctly.
Perform the wrap test on the next page for a more
complete test of the RS-232C card.

11

Wrap Test
If you have the wrap connector, you can test thecommunication functions of the RS-232C card,
including the cable connector, more throughly.

-1Turn the system unit power off and remove thepower plug. If the RS-232C cable is not connectedto the RS-232C card, refer to Step 7 of "Installation
Instructions."

Front of System Unit

12

2Connect the wrap connector to the other end of the
RS-232C cable.

Wrap Connector

RS-232C Cable

3

Remove any cartridges and diskettes from the system unit. Insert the system unit power plug into a
power outlet and turn the power on.

13

4

When the initial BASIC screen (shown below) is
displayed, press and hold the ( Ctrl ) key and theAlt 3 key at the same time, and then press the( Insert key. The screen will be erased and thewrap test is now running.

The IBM JX Basic
Version J 1.00
Copyright IBM Corp. 1981, 1982, 1983
XXXXX Bytes freeOK1® 2 =11 3 LOAD" 4 SAVE" 5asuum

O oopoo opoociIl'2000000000001:11=10=
L7000000000001:1000
LDOC1001:101:1000001_1100
00001:10000001:10U00
1 rD 1
I 0 0

14

5

If the test ends normally, the initial BASIC screen
will be displayed again.
If any problem is detected by the test, the following
error message will be displayed and a beep willsound twice.
If any Problem is detected, make sure that thecable is firmly connected and repeat the test. If the
problem recurs, refer to Chapter 7, "Problem Determination Procedures" in Guide to Operations.
Note: If "ERROR J" is displayed, instead of "ERROR
D", ignore it.

Error Message
If the initial BASIC screen is displayed, the wrap test was
successful and the RS-232C card can be used for communications.
Note: Make sure that you conform to any laws or
regulations required before using your RS-232C
card for communications over public networks.
15

Appendix A Connections of PinsWrap Test
The following drawing shows the connections of thepins when the RS-232C cable and the wrap connector
are connected to the RS-232C card.

Wrap Connector
Shielded lineSD

D
D

RD —0<1

0

RS

O

CS
DR

CD

°*(1
Oa

°<1

9

9

0
10
0
11

10 o0
11
120
13 oo
14
o
15

012

013

X14
015
0
16
0
17
0 18

ER

0

16 0
17 0

18 0
19

019
0
20

20 0

o

21
0 22
o 23
°24
0 25

21
22 0

23
24

25

o
41.

RS-232C Card

16

RS-232C Cable

Appendix B RS-232C Card
Problem Determination
This section describes the actions to be taken when aproblem occurs during actual communications.
If a problem occurs during communication, perform theinstallation test and the wrap test (if the wrap connector
is provided) described in "Testing after Installation."If the problem still remains unsolved, perform the following procedures depending on the symptoms. If the problem still remains unsolved, refer to Chapter 7, "Problem
Determination Procedures" in the Guide to Operations.
Symptom 1: A communication error message isdisplayed.

Communication parameters (baud rate, stop bit, parity,
modem control, etc.) are invalid or the RS-232C cardor cable has some problem. Take the following actions.

• Confirm the connection between the card and thecable.
• Confirm the parameters with the destination of communications.
Symptom 2: Data can neither be sent nor received
The RS-232C card or the cable has some problem.
Take the following actions.
• Confirm the connection between the card and thecable.
17Symptom 3: ERROR D is displayed as the result of theself-diagnostic test.
This error message does not imply a problem if the test
was started using the ( Ctrl ), ( Alt j, and the Insert )keys without attaching the wrap connector.

18

®

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IBM Americas/Far East Corporation

Chapter 7. Problem Determination
Procedures'''--

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Chapter 7. Problem Determination Procedures 7-1

Before You Call for Helpar Are the Power switches ON?
Are the Power plugs and the connectors firmly inserted?
If you have a suspected problem with your JX, check thefollowing charts before proceeding.
munnuuuummuumuuuuuumuuuuqumwnpiuuugimujinuuumpunjuuinupmnuuunuuunnununnuonuunumuunnmunuuiunhnunuuniuimuum

Symptom

What to check

Remarks

Display• Nothing appears.
• No color is displayed.
• The screen is dark.

• Brightnessknob• Turn the knob clockwise
and the screen will getbrighter.

1.
Keyboard• No character is displayed.
• Wrong characters are
displayed.
• Characters were dis
played, but the command is not executed.
• It occasionally makes"beep" sound.

• Battery• Distancefrom anddirection to
the systemunit• Mode• Volume knob

No soundDiskette• It cannot be read.
• It cannot be written.
1►

7-2• Diskettedirection• Write-protect
switch• Is it the correct diskette?

• When the battery becomes
low, characters will not
be input correctly.
• Operate in the correct
input mode. (See
Chapter 3.)
Full-width alphanumerics
cannot be used for a command.

• Turn the knob clockwise
to increase volume.

• Correct operations are described in Chapter 7.
• Diskettes are easily
damaged. Try anotherdiskette.

If you have a suspected problem with your JX, check thefollowing charts before proceeding.
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

Symptom

What to check

Joystick• It does not work.

1.

• Connector
No.
• Connectedconnector• Two connectors (1 and 2)
are provided.

• Adjust thevolume andthe tone• Tape position• Connectedplug• Dirty head

• Is it connected correctly?
• Some types of taperecorder cannot read/
write well.

• Insertion• Is it completely inserted?

Cassette Tape
• It does not read.
• It does not write.

Cartridge• The program is notread.

RS-232C• It cannot communicate.

Remarks• Connector• Destination
4• Modem• Are the modem and thedestination of communication normal?

• Connector• Address
switches• Cable• Is it connected correctly?
• Are the switches set
correctly?
• Is the cable connected
correctly?

p.

Cluster• It cannot communicate.

SePrinter• It dose not print.

• Indicator
Lights• Paper• If none of the above is applicable,• If you have checked, but are
unsuccessful,• Any lights on?
• Is the paper installed?

Go to thesubsequent pages.

Chapter 7. Problem Determination Procedures 7-3

0

Any Problem?
Flow of operations

When and what happened?
Problem

ActionPower ON-4.111111111MM

Self-diagnostic test

Self-diagnostic
test, Error
messages.
Go to P. 7-6

ERROR
is being displayed.

•

7

IiIIIIII1111111

Beep (one, short)
A problem occurredin the previous steps.

ProgramScreenBasic diagnostic
test.
Go to P. 7-7.

Go to P. 7-5

Operation'1
9

A problem occurred
during operation.
Basic diagnostic
test.
Go to P. 7-7.

If you have no idea what is causing the problem,

7-4

co

Any Problem?

This must be the• 'source of the problem.
Self-diagnostic Test
Error Messages

P.7-6

Display

P.7-15

Speaker Problem

P.7-28

RS-232C Problem Go to each
OptionCluster Problem Guide•

Diskette, Diskette
Drive Problem

P. 7-17

Cartridge Problem

P. 7-31

Cassette Problem

P. 7-22

Joystick Problem

P. 7-26

Keyboard Problem

P. 7-12Chapter 7. Problem Determination Procedures 7-5

Self-diagnostic Test Error Messages• ERROR• ERROR• ERROR• ERRORA
CF
H• ERRORB• ERRORD• ERRORG

System Unit

Keyboard Test
Page 7-13

RS-232C Card
No-

Option Guide

Option Cartridge Test
Page 7-34

Printer (Parallel) Interface• ERRORJ

Test
Page 7-26• ERRORIPC Cluster Adapter Card
Option Guide

The device in (( ) seems to have a problem.
To request repair from the dealer, go to Page 7-37.

7-6

Basic Diagnostic Test

1

Turn the Power switch on the system unit and all
the options off. Disconnect the power plugs fromthe receptacles.

Note: Disconnect all non-IBM products. Also, remove
the cartridge and the diskette.

2

Make sure that the cables of the IBM products areconnected correctly to the system unit.

Chapter 7. Problem Determination Procedures 7-7

3

Using a lamp, etc., make sure that power is being
supplied to the receptacle.

4

Turn the Brightness knob on the dispaly clockwise.
Turn the display on.

`gomi,

Brightness Volume

7-8

5

Insert the system unit power plug into thereceptacle (checked in step 3) and turn the poweron.

Chapter 7. Problem Determination Procedures 7-9

If the system is working correctly, the following will occur.
The test screen is displayed.

A beep sounds once.

The initial BASIC screen is displayed.

The IBM PC jr Basic
Version J1.00
IBM Corp. 1981, 1982, 1983
XXXXX Bytes free
OK

IRMO 2 RUN 3 LOAD"

The basic diagnostic test is completed. If no error is detected during the test, the system is working correctly.

7-10

Basic Diagnostic Test Problem Determination Table•

Nothing is displayed on the screen
and one beep sounds.

•

Symptom other than the following.

•

No beep sounds.

•

Beep sounds continuously.

The system unit and thedisplay• Nothing is displayed on the screen.
Beep sounds twice.
•

No BASIC message is displayedon the screen.

The system unit

• An error message, other than
ERROR B, is displayed on thescreen.
•The power light on the display
does not turn ON.

•

The display screen is slanted,
too wide, too narrow, out of focus,•

ERROR B is displayed on thescreen.

Display

Keyboard test
Page 7-13

The problem seems attributable to the device shown in. To request repair by the dealer, go to Page 7-37.

Chapter 7. Problem Determination Procedures 7-11

Keyboard Problem
If any of the following occurs, test the keyboard.

Example of Symptom
•
•
•
•
•
•

7-12

Nothing can be input from the keyboard.
Data can sometimes be input from the keyboard.
Input code from the keyboard is changed.
Data is input from the keyboard only once, but thedata is displayed more than once.
When the keyboard cable is connected, the keyboard
malfunctions.
When a key is pressed, it makes a "beep, beep"sound.

Keyboard Test

1

Turn the system unit power switch off. Take out the
cartridge and diskette from the system unit. Turnthe system unit power switch on.

Note: If ERROR B is displayed, press
If operation cannot be continued, refer to"Keyboard Problem Determination Table" (page7-14).

Chapter 7. Problem Determination Procedures 7-13

2

Press the key you want to test. Make sure that thecharacter or the symbol written on the key is displayed correctly on the screen.

a

The keyboard test is completed. If no problem has beenfound during this test, the keyboard is working correctly.

Keyboard Problem Determination Table•

ERROR B is displayedby the Self-diagnostic
Test.

•

Data from the keyboard
is changed.

•

When a key is pressed,
it makes a sound like"beep, beep."
No data can be input
from the keyboard.

•

Data is input whenno key is pressed.

•

Symptoms other than
the above.

System unit

System unit and keyboard(keyboard cable)

The problem seems attributable to the device shown in(.1 1 To request repair by the dealer, go to Page 7-37.

7-14

Display Problem
If any of the following occurs, refer to the Display
Problem Determination Table on the next page.

Examples of Symptom•

The screen is too dim.

•

The screen is monochromaticwhen the mode is color.

•

The screen is too wide or
too narrow.

•

Some specific color cannot
be displayed.

•

The screen is out of focus.

•

Vertical patterns appear on
the screen.

•

The screen is shrunken or
elongated.

•

The screen is tilted.

Too DimToo Wide

Too Narrow

Out of Focus

ShrunkenCharacters shifted left or
right or up and down
off the display area

TiltedChapter 7. Problem Determination Procedures 7-15

Display Problem Determination Table• The screen is out of focus.
• The screen is too dim,too wide, or too narrow.

Display• The screen is tilted,
shrunken, or elongated.

• The screen remains
completely dark.
• Scan lines appear, but
nothing is displayedon the screen.
• The screen keeps rolling.

System unit
and display• The screen displays
unexpected data.
• Symptoms other than
the above.

The Problem seems attributable to the device shown in) To request repair by the reader, go to page 7-37.

7-16

Diskette Drive Problem
If any of the following occurs, test the diskette drive.
Examples of Symptom••••

An error message indicating diskette read error
occurs when DOS is started.
An error message is displayed when attempting towrite or read the diskette.
A file which was created on a different diskette drive
cannot be used.
An error message is displayed when writing or reading a specific file.

Diskette Drive Test

1

Turn the system unit power switch off. Remove any
cartridges and diskettes from the system unit.

Chapter 7. Problem Determination Procedures 7-17

2

Insert the DOS diskette in diskette drive A until itclicks. Turn the system unit power switch on.

Note: Do not use a master DOS diskette for this test.
It is recommended to set the DOS diskette "write
protected."3

DOS will start. The following message will be displayed after the test screen. Input the date and thetime according to the message on the screen.

Current date is Tue 1-01-1980
Enter new date:Current time is 0:00:47.62
Enter new time:

7-18

4

Type DIR and make sure that the diskette directory
can be read.

MORE
COM
384 10-20-83 12:00p
BASIC
COM
16256 10-20-83 12 ,00P
BASICACOM
26112 10-20-83 12:00p
DEBUG
COM
11904 10-20-83 12 ,00P
SAMPLES BAS
3067 10-20-83 12:00p
ART
BAS
1920 10-20-83 12 ,00p
MUSIC
BAS
10291 10-20-83 12:00P
MUSICABAS
13292 12-12-84 12 ,00p
6272 10-20-83 12:00i,
MORTGAGE BAS
COLORBAR BAS
1536 10-20-83 12:00p
DONKEYBAS
3584 10-20-83 12:00p
CIRCLEBAS
1664 10-20-83 12:00p
PIECHART BAS
2304 10-20-83 12:000
SPACE
BAS
1920 10-20-83 12:00p
BALL
BAS
2048 10-20-83 12:000
BASCOMM
4352 10-20-83 12:00P
GRAPHICX COM
884 12-05-84 12:00a
SWAP_AC EXE
627 12-10-84
2:48p
INSTALL COM
6779
6-03-84 12:00P1199
PCTRMEM COM
6-11-84 11:04.
PCJRMEM DOC
19055
6-03-84 12:000
6-03-84 12:000
RAMDISK COM
816
75776 bytes free
41 File 1s1
A>

5

Get a diskette for copying and make sure that it isenabled to write.

Chapter 7. Problem Determination Procedures 7-19

6Type in the appropriate command for the diskette
drive to be tested. Follow the prompts that are
displayed.

Diskette drive
to be tested

7

Command to be
Typed

A

DISKCOPYB

DISKCOPY A: B:C

DISKCOPY A: C:

If the following prompt is displayed, type N.

Copy complete
Copy another <YIN> ?

The diskette drive test is completed. If no problem isfound during this test, the diskette drive is working correctly.

7-20

Diskette Drive Problem Determination Table•

An error occurs whenstarting DOS.

•

An error occurs whenwriting a file.

•

An error occurs whenreading a file.

•

A file written on anotherdiskette drive cannot
be read.

•Symptoms other than
the above.

•

Write protect error

Trouble of the diskette being
used or system unit

System unit

The problem seems attributable to the device shown in. To request repair by the dealer, go to Page 7-37.

Chapter 7. Problem Determination Procedures 7-21

Cassette Interface Problem
If any of the following occurs, test the cassette interface.

Examples of Symptom•••

An error message is displayed when trying to read or
write a file from the cassette tape recorder.
The cassette tape recorder cannot be remotely controlled.
Writing to or reading from the cassette tape recorder
is not possible.

Cassette Interface Test

1

7-22

Turn off the system unit power. Remove any

cartridges and diskettes from the system unit. Turnon the system unit power.

2

Make sure that the cassette tape recorder is connected to the system unit. Set the cassette taperecorder, so it is ready to record.

3

Type in the following sample program from the
keyboard.

Sample program
10 CLS
20 FOR I = 1 TO 500
30 PRINT "H";40 NEXT I
50 END

Chapter 7. Problem Determination Procedures 7-23

Type SAVE "CAS1: TEST." A file named"TEST" will be written to the cassette tape.

5

After typing NEW, rewind the tape and type
LOAD "CAS1: TEST." The file named "TEST"
will be read into the memory from the cassette tape.

6

Type RUN and execute the program. Make surethat the following is displayed on the screen.

HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHH

Ok

1 LIST 2RUN4 3LOAD"

A

SAVE

CONT-1

The cassette interface test is completed. If no problem isfound during this test, the cassette interface is working
correctly.

7-24

Cassette Interface Problem Determination Table•

SAVE cannot be
executed.

•

As error message isdisplayed when trying
to LOAD a file.

•

LOAD cannot be
executed.

Cassette tape recorderproblem or the cassettetape being used is
defective or system
unit problem (cassettetape cable)

The problem seems to be attributable to the device shownin. To request repair by the dealer, go to Page 7-37.

Chapter 7. Problem Determination Procedures 7-25

Joystick Problem
Joystick Test

1

Turn off the system unit power. Disconnect the
joystick from the current connector and connect itto the other connector.

1 Joystick 2

2

1 Joystick 2

Turn on the system unit power. Execute the program which had the problem to check the operationof the joystick.

The joystick test is completed. If no problem is foundduring this test, the joystick is working correctly.

7-26

Joystick Problem Determination Table••

A problem occurs when
the joystick is connected
to either one of the joystick connector.

Symptoms other than theabove

System unit

Joystick

The problem seems attributable to the device shown in. To request repair by the dealer, go to Page 7-37.

Chapter 7. Problem Determination Procedures 7-27

Speaker Problem
If any of the following occurs, perform a sound test.

Examples of Symptom•••

SOUND or PLAY command cannot be executed correctly in BASIC.
The display, the external speaker, or the built-in system unit speaker makes no sound.
The display, the external speaker, or the built-in system unit speaker makes noiseSound Test

1

7-28

Turn off the system unit power. Remove any
cartridges and diskettes from the system unit.
Turn the system unit power on.

2Type in either of the following sample programs,
depending on whether the built-in system unit
speaker or the built-in display speaker is to betested.

Sample program for testing the built-in system unit
speaker:

10 SOUND OFF:BEEP ON
20 A$="< CDEFGAB>C"
30 PLAY A$
Sample program for testing the display or the external
speaker:

10 SOUND ON:BEEP OFF
20 A$="<CDEFGAB>C"
30 PLAY A$

3

Set the volume knob to the medium position andpress PF2 key to execute the program. The built-in
system unit speaker has no volume control.

Brightness Volume

The sound test is completed. If no problem is found during this test, the speaker is working correctly.
Chapter 7. Problem Determination Procedures 7-29

Sound Test Problem Determination Table•

The built-in system unit
speaker makes no sound.

•

Symptoms other than
the above.

System unit

System unit and display.

The problem seems attributable to the device shown in. To request repair by the dealer, go to Page 7-37.

7-30

Option Cartridge Problem
If any of the following occurs, perform the option cartridge test.
Examples of symptom••

The cartridge does not operate correctly.
"ERROR" is displayed as the result of the selfdiagnotic test.

Option Cartridge Test

1

Remove any diskettes from the system unit and insert a cartridge in either of the cartridge slots.

Chapter 7. Problem Determination Procedures 7-31

2

If control is not transferred to the cartridge, or if"ERROR" is displayed, insert the cartridge in theother slot and check whether it operates correctly.

The option cartridge test is completed. If no problem isfound during this test, the option cartridge is working correctly.

7-32

Option Cartridge Trouble-Shooting Table•

A problem occurs in only
one of the cartridge slots.

Cartridge•

A problem occurs in both
cartridge slots

System unit andcartridge

The problem seems attributable to the device shown in. To request repair by the dealer, go to Page 7-37.

Chapter 7. Problem Determination Procedures 7-33

Printer (Parallel) Interface Problem
If any of the following occurs, test the printer (parallel)interfece.

Examples of Symptom•••

The printer does not print.
It does not print correct characters.
Printer Ready light, if any, does not light up.

Printer (Parallel) Interface Problem Test

1

Turn off the system unit power and disconnect theprinter cable.

-0-

7-34

2

Remove any cartridges and diskettes from thesystem unit. Turn the system unit power switch on.

3

When the initial screen of BASIC appears, press
and hold ( Ctrl 3 and Alt , and then press( Insert ) . The test screen will appear.
Note: If RS-232C card is installed, "ERROR D" will be
displayed. This does not indicate a problem.

The parallel interface test is completed. If "ERROR J" isnot displayed, refer to your printer's Operation Guide.
Chapter 7. Problem Determination Procedures 7-35

Printer (Parallel) Interface Problem Determination Table•

ERROR J is displayed by theparallel interface
test.

•

Characters areblurred or
missing.

•

Printed characters
do not have uniform darkness.

•

The character
position or the
pitch is notcorrect.

•

The printing
quality is low.

•

The printer does
not feed the paper.

•

Paper becomes
dirty, torn or
jammed.

System unit

Refer to your printer's
Operation Guide.

The problem seems attributable to the device shown in
To request repair by the dealer, go to page 7-37.

7-36

To Request Service by the Dealer

If your JX system has a problem and must be repaired by
the dealer, perform the following steps.
1. Complete the "Problem Report Form" which is foundat the end of this chapter.
2. Turn off the power of all the devices that are connected to the JX system unit. Remove all powerplugs.
3. Request repair of the device that seems to have aproblem.

Chapter 7. Problem Determination Procedures 7-37

7-38

Problem Report From
1. Which device has a problem?
❑ System unit
❑ Keyboard❑❑

Display
Other IBMproducts

2. Software being used?
❑ DOS❑ Pascal❑ Macro Assembler❑❑❑

Multiplan
FORTRAN
Others3. Enter the operational environment•

Did the trouble occur during system installation?
(During installation/normal operation)•

Time that passed between power ON and problem occurance:
About

•

hours

Average daily operations:
About

hours

•

Place of operation•

Room temperature at the time of problem
occurance:
About

°C

Chapter 7. Problem Determination Procedures 7-39

Expansion RAM Card Option Guide
This manual explains the procedures for installing the
128KB, 256KB and 384KB RAM cards.
Warning
The IC may be damaged if you touch it when you areelectrostatically charged. Before touching an IC, be
sure to always discharge any static electricity on you bytouching a steel cabinet, etc., with your hand. For
safety, do not do anything that is not written in thismanual.

This manual consists of the following:
Before the Installation
Parts List
Tools Required
Installation of the 128KB RAM Card
Installation of the 256KB RAM Card
Installation of the 384KB RAM Card
Testing after Installation
Supplementary Information

3
4
5
10
13
14
16

115009-0

First Edition (August 1985)
Changes are periodically made to the information herein;thesechanges will be incorporated in new editions of the publication.
It is possible that this material may contain references 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 inyour country.
Copyright International Business Machines Corp. 1985

Before the Installation
This manual explains the procedures for installing thefollowing three RAM cards:• 128KB RAM card
• 256KB RAM card
• 384KB RAM card
The installation method will depend on the memoy
structure and the hardware configuration of the JX.
This manual uses a flow chart to explain the procedures for installing each card. Follow the applicableflow chart. The terms used in the flow charts are
explained below.
Configuration: Memory configuration of yoursystemJumper: To install the 128KB RAM card, thejumper must be connected on the card.
Their positions are explained wherevernecessary.
Expansion Unit: The Expansion Unit is installed
on top of the System Unit andrequired for two or more
expansion RAM cards.
Expansion Board: The Expansion Board isnecessary for installing two
or more expansion RAM cards.
It has four connectors.

System Board: The System Board is a circuitboard installed in the System Unit.
It also has the connectors for
the RAM cards.
After reading this section, confirm the parts that you
received by referring to "Parts List" and install
the cards.
The installation procedures are explained in thefollowing sequence.
128KB RAM card
256KB RAM card
384KB RAM card

P. 5
p. 10
p. 15

If you have purchased the Expansion Board with the
expansion RAM cards, install the Expansion Board
first.

2

Parts List
RAM Cards
128KB RAM card: ID 6454427
256KB RAM card: ID 6454428
384KB RAM card: ID 6454429

If the card has been damaged during shipment, pleasecontact your dealer.

3

Tools Required• Medium-size Phillips screwdriver

4

Installation of the 128KB RAM Card
The 128KB RAM card can be installed in four ways.
Compare the memory configuration of your systemwith the following illustration and proceed to theapplicable procedure.

MemoryConfiguration
1

See Page 6.

128KB
I28KB

See Page 7.

The expansion
board isnecessary.

See Page 8.

The expansion
board isnecessary.

See Page 9.

The expansion
board isnecessary.

Base Add'1
64KB 64KB
3

128KB
128KB
I28KB
Add 'I
64KB 64KB

4Remarks

128KB
Base Add'l
64KB 64KB

2

Installation
Procedures

12gKB
256KB
Base Add'l
64KB 64KB

Notes: 1. V
indicates the RAM card to be installed.
2. "Base 64KB" means the 64KB memory thatcomes with the system.
3. "Add'l 64KB" means 64KB RAM card(already mounted).

5

Installation Procedure for Memory
Configuration 1
Proceed according to the flow chart.
The figures in parentheses indicate the pages to bereferred to.
Start

Connect the jumper to position 1of the 128KB
RAM card

Configuration 1(Page 17)Is theexpansion unit
installed?
Yes

Is theexpansion board
installed?
Yes

Insert the RAM
card into any
connector on
expansion board

Remove the expansion unit

(page 18)

Insert the RAM
card into the connector on thesystem board(Page 20)

(Page 20)

4,
Perform the"Testing after
Installation"
6(Page 14)

Installation Procedure for Memory
Configuration 2
Proceed according to the flow chart.
The figures in parentheses indicate the pages to bereferred to.

Start

a

Connect the jumper to position 2(Page 17)of the 128KB
RAM card

Is he
expansion board
installed?

128KB
Base Add'l
64KB 64KB
Configuration 2

No

Yes
Install the expansion board

Insert the RAM
card into any
connector on
expansion board(Page 20)

Note: The procedures for installingthe expansion board are
explaind in Expansion
Board Option Guide.

Perform thepost-installation (Page 14)
test

7Installation Procedure for Memory
Configuration 3
Proceed according to the flow chart.
The figures in parentheses indicate the pages to bereferred

Start
128KB
Connect he jumper to position 3of the 128KB
RAM card(Page 17)

Insert the RAM
card into any
connector on
expansion board(Page 20)

Perform the"Testing after
Installation"(Page 14)128KB
Base I Addl
64KB 64KB
Configuration 3

Installation Procedure for Memory
Configuration 4
Proceed according to the flow chart.
The figures in parentheses indicate the pages to bereferred to.

Start

Connect he jum
per to position 3of the 128KB
RAM card(Page 17)Is he
expansion boar insta led?

No

Configuration 4

Yes

Install the expansion board

Insert the RAM
card into any
connector on
expansion hoard(Page 20)

Perform the"Testing afterI nstallation-(Page 14)

Note: The procedures for installingthe expansion board are
explained in Expansion
Board Option Guide.

9Installation of the 256KB RAM Card
The 256KB RAM card can be installed in two ways.
Compare the memory configuration of your systemwith the following illustration and proceed to theapplicable procedure.
MemoryConfiguration
I

Installation
Procedures

Fo
256KliBase Add'!
64KB 64KB

2

Remarks

See Page I I

.e
256KB
I28KB
Base I Add'!
64KB 64KB

See Page 12

The expansion
hoard isnecessary.

Notes: 1. IIIA indicates the RAM card to be installed.
2. "Base 64KB" means the 64KB memory thatcomes with the system.
3. "Add' I 64KB" means 64KB RAM card(already mounted).

10

Installation Procedure for Memory
Configuration 1
Proceed according to the flow chart.
The figures in parentheses indicate the pages to bereferred to.
Start
'56KP
Base Add'l
64KB 64KB
Configuration 1

Is theexpans'on unit
inst lied?

Is heexpansion hoard
installed?
Yes(Page 18)

Insert the RAM
card into any
connector on
expansion board(Page 20)

Perf n-m the"Testing after
Instlilation"

Insert the RAM
card into the connector on thesystem board(Page 20)

(Page 14)IIInstallation Procedure for Memory
Configuration 2
Proceed according to the flow chart.
The figures in parentheses indicate the pages to bereferred to.

Start

Configuration 2

Is heexpansion boar
insta led?

$
Install the expansion board

Move the jumperon the 128KB
RAM card fromposition 1 to 3

Move the 128KB
RAM card to the
expansion board(Page 17)

Note: The procedures for installingthe expansion board are
explained in Expansion
Board Option Guide.
(Page 20)

Insert the 256KB
RAM card into
any connector on (Page 20)
the expansion
board

Perform the"Testing after
Installation"
12(Page 14)

Installation of the 384KB RAM Card
Proceed according to the flow chart.
The figures in parentheses indicate the page to bereferred to.

Start

Is he
expans'on unit
installed?

Is he
expansion boar
insta led?

Remove the ex(Page 18)
pansion unit

Insert the RAM
card into any
connector on
expansion board

Perform the"Testing after(Page 20)

Insert the RAM
card into the con(Page 20)
nector on thesystem board(Page 14)

Installation"
13

Testing after Installation
After installation of the RAM card, perform thefollowing test to ensure that you have installed itcorrectly.
When the system unit power is turned on, the JX
system performs a self-diagnostic test automatically.

1

Make sure that the system unit power plug isinserted in power outlet, then turn the Power on.
After a short time, the screen is displayed. Checkthe display of the available memory.

.4111.•

Available
MemoryExample of Test Screen

If the value of the available memory is increasedby the amount of the installed memory card, thecard has been installed correctly.

14

If the display of the available memory does notincrease, or if entirely different characters are
displayed, the RAM card or other parts have not been
installed correctly. Check the installation procedures
again and, if the problem persists, refer to Chapter 7,"Problem Determination Guide," in Guide to Operations.
Note: To use memory greater than 128KB with DOS,
you must install the memory device driver. Referto the DOS Reference Manual for instructions.

15Supplementary Information
Refer to the following supplementary information,
when necessary, during the installation of a RAM card.
Jumper Setting
How to Remove the Expansion Unit
How to Install the RAM Card
Memory Map
Related Manuals

16

17
18
20
24
25

Jumper Setting
The 128KB RAM card has a jumper that determines
the memory address.
Connect the jumper as specified in the flow chart of
the RAM card being installed.

Address Jumper

128KB RAM CardCap

Jumper Position 1

Jumper Position 2

Jumper Position 3

20000H-3FFFFH

40000H-5FFFFH

60000H-7FFFFH

17

How to Remove the Expansion Unit

1

Turn the system unit power off and remove thepower plug from the power outlet.
Turn the other peripheral devices power off(display, printer, etc.) and remove their powerplugs from the power outlets.

If the expansion unit has a diskette drive, disconnect
the signal cable (wihch comes from the system unit)
from the diskette drive and proceed to the next step.
18

3

If the expansion unit is installed, disconnect it.
If the expansion unit has an expansion board,
disconnect it by referring to the Expansion Board
Option Guide before performing the following
procedures.

(1) Remove the expansion unit power plug from thesystem unit. Then, loosen the two screws on theback by turning them to the left with a screw
driver. The screws cannot be removed, but theymust be loosened completely.

(2) Carefully lift the expansion unit and remove it bypulling it towards the back.

19

How to Install the RAM Card
The RAM card is installed on the system board or on
the expansion board.

1Turn the system unit power off and remove thepower plug from the power outlet.
Turn the other peripheral devices power off(display, printer, etc.) and remove their powerplugs from the power outlets.

20

2

Remove the top cover from the top unit (system
unit or expansion unit).

(1) Loosen the two screws on the back of the unit byturning them to the left with a screw driver. The
screws cannot be removed, but they must beloosened completely.
Screw Positions(2) Insert a coin into the groove on the back of thecover and lift it using a coin as a lever. Remove
it by pulling it towards the back.

21

Perform Step 3 to install the RAM card on the systemboard. Perform Step 4 to install the RAM card on the
expansion board.

Insert the RAM card into the RAM card connector
on the system unit.
Note: Make sure that the jumper is set correctly.
(Refer to "Jumper Setting.")

Insert the cardalong the front
rail.

Position the card by pressing it lightly to the right(when viewed from the front of the system unit).
Connector Position of the System Unit

For 64 KB RAM Card

For RS-232C Card

Back of the System Unit
22

Perform Step 4 to install the RAM card on the
expansion board. If you have already installed the
RAM card in Step 3, the following operation is
unnecessary.

4

Attach the RAM card to any connector on the expansion board.

Note: Ensure that the jumper is set correctly.
(Refer to "Jumper Setting.")23

Memory Map
The memory address of the expansion RAM card depends upon the memory configuration of the system.

MemoryMemoryConfiguration

Address>

20000-3FFFF>

00000-1FFFF

128KB
128KB
Add 1
Basic + 64KB
128KB
128KB
128KB
Basic + Acn

40000-5FFFF
20000-3FFFF>>

60000-7FFFF>>

20000-3FFFF
00000-1FFFF

00000-1FFFF

40000-5FFFF

256KB

>

20000-5FFFF

Basic+ 6A4c1KdBI>

00000-1FFFF

128KB
256KB
,e;„ .4_ dd
B..,,, 64KB>>

60000-7FFFF

384KB
Basic + -6Wil

24

VVV

128KB
Basic+Add'I
64KB

20000-5FFFF> 00000-1FFFF>

20000-7FFFF>

00000-1FFFF

Related Manuals•

Guide to Operations
Basic operations and the problem determination procedures of the IBM-JX.

•

Expansion Board Option Guide
How to install and remove the expansion unit
and how to install the expansion board.

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