IBM 3708 Service manual

End-User Reference
I~i~~3708
Network
Conversion Unit
GA27-3765-01

Second Edition (February 1988)
This edition obsoletes GA27-3765-0.
Changes are made periodically
to the information herein; before using this pUblication in connection with the
operation
ofIBM systems or equipment, consult the latest IBM System/370, 30XX and 4300 Processors
Bibliography, GC20-0001; System/38 Bibliography, GH30-0233; and8100 Bibliography, GC20-8100, for the
editions
that are applicable and current.
Any reference to
an IBM licensed program in this document is not intended to state or imply that only IBM's
licensed product may be used. Any functionally equivalent program may be used instead.
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.
Publications are
not stocked at the address given below; requests for IBM publications should be made to
your IBM representative or to the IBM branch office serving your locality.
A form for reader's comments is provided
at the back of this publication. If the form has been removed,
comments may be addressed to IBM Corporation, Communication Products Information Development,
Department B02, PO Box 12195, Research Triangle Park, North Carolina, U.S.A. 27709. IBM may use or
distribute any of the information you supply in any way it believes appropriate without incurring any
obligation whatever.
You may, of course, continue to use the information you supply.
©Copyright 1986,1988

iii

Federal Communications Commission (FCC) Statement
Warning: This equipment generates, uses, and can radiate radio frequency energy and
if not installed and
used in accordance with the instruction manual, may cause interference to radio communications.
It has been
tested and found to comply with the limits for a Class A computing device pursuant to Subpart J
Df Part 15
of FCC rules, which are designed to provide reasonable protection against such interference when operated in
a commercial environment. Operation
of this equipment in a residential area is likely to cause interference in
which case the user
at his own expense will be required to take whatever measures may be required to correct
the interference.
Instructions to User:
In many instances, shielded cables and connectors must be used for connection to
peripherals. Proper IBM cables are available from authorized dealers. The manufacturer is
not responsible
for any radio
or television interference caused by using other than the recommended cables or by
unauthorized modifications to this equipment;
it is the responsibility of the user to correct such interference.
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 following:
FOB Public Contact Branch
Room
725
1919 M St. NW
Washington, DC 20554
Tele. [phone]
Consumer Assistance and
Small Business Division
Room 254
1919 M St. NW
Washington, DC 20554
Tele. [phone]
This! manual contains several trademarks and registered trademarks. Viewpoint is a registered trademark of
Applied Digital Data Systems, Inc. Beehive is a trademark of Beehive International. Dasher is a registered
trademark
of the Data General Corporation. DEC is a registered trademark of the Digital Equipment
Corporation. ESPRIT I and ESPRIT II are trademarks
of Esprit Systems, Inc. FALCO 500 is a registered
trademark
of Falco Data Products, Inc. Dumb Terminal is a registered trademark of Lear Siegler, Inc.
Displayphone
is a trademark of Northern Telecom, Inc. TeleVideo is a registered trademark of TeleVideo
Systems, Inc. WY-50 is a registered trademark
of Wyse Technology.
iv IBM 3708 End-User Reference

About This Book
This book is a reference for users of terminals attached to an IBM 3708 Network
Conversion Unit. Footnotes in Chapters 1 through 4 are provided for the system
administrator
or system engineer who is responsible for the 3708. The footnotes
may
not be of interest to terminal operators and other end users.
How This Book Is Organized
This book contains four chapters and three appendixes:
Chapter
1, "Logging on to the 3708" gives instructions for logging on to the 3708
and lists any error messages that may be displayed.
Chapter
2, "Operating in Full-Screen Mode" describes how to operate in protocol
conversion mode (full-screen mode).
Chapter
3, "Operating in Line-by-Line and ASCII Pass-through Modes" describes
how to operate in protocol enveloping (line-by-line)
and ASCII pass-through modes.
Chapter 4, "Common Problems
and What to Do" describes how to solve common
problems you may have during logging on or operating in protocol conversion
or
protocol enveloping modes.
4Ppendix A, "Flowchart
of 3708 Logon Process" contains a flow diagram of the
logon process.
Appendix
B, "Setting up Your Terminal" contains the recommended switch settings
for the supported terminals.
Appendix C, "Terminal Keyboard Maps" contains keyboard maps for the terminals
supported
by the 3708.
This
book also contains a glossary and an index.
Related 3708 Library Information
The following list describes books and information for the 3708:
• IBM 3708 Network Conversion Unit Planning and Installation, GA27-3766,
describes how you can plan for and install the 3708.
• IBM 3708 Network Conversion Unit Setup, GA27-361 1, is shipped with the 3708
and describes how to set up
and test the 3708, how to handle setup problems,
and how to prepare the 3708 for relocation.
• IBM 3708 Network Conversion Unit Description, GA27-3768, describes the
external interfaces and operational characteristics
of the 3708.
• IBM 3708 Network Conversion Unit Problem Determination, GA27-3767,
provides procedures for solving problems with the 3708.
• Unpacking instructions are printed
on the 3708 shipping carton and show how
to unpack the 3708.
About This Book V

• IBM 3708 Network Conversion Unit Problem Report, GA27-3638, which is
shipped with the 3708, provides a means
of recording problem diagnosis
information, which is used by repair center representatives.
• IBM 3708 Network Conversion Unit Registration Address Form, GX27-3734, is
shipped with the 3708. This card must be completed and returned to IBM for
you to automatically receive notification
of changes in the 3708 microcode.
• IBM
3708 reference cards describe the keyboard functions of ASCII displays
that can
be connected to a 3708 and describe the general procedures for terminal
users.
See Appendix C, "Terminal Keyboard Maps" for a list of the end-user
devices and the reference card order numbers.
vi IBM 3708 End-User Reference

Changes Since the Last Edition
This edition contains the following new information:
• Instructions for logging on to the
3708 using the short logon screens
• Descriptions
of two new non-3270 functions. The following features are
available by entering key sequences:
-Terminal logon initialization sequence (TLIS) refresh
-2/4 color toggle
• Switch settings and keyboard maps for the following terminals
FALCO 500®
IBM
3151
-IBM 3163/3164 VT100/3708 Emulation Cartridge (Feature 8313)
WY-50®.
Changes Since the Last Edition vii

viii IBM 3708 End-User Reference

Contents
Chapter 1. Logging on to the 3708 1-1
Things to Know Before Logging on 1-1
Full Screen Format and Operation 1-1
Input Area and Responses 1-2
Short Screen Format and Operation 1-3
Operation Without Logon Screens .. 1-3
Other Features ............... 1-4
Preventing the Display of Entire Screens 1-4
Disconnecting from the 3708 1-4
Logging on ................. 1-5
Step 1. Establishing the Connection 1-5
Step 2. Entering the Port Password 1-5
Step 3. Entering the Terminal Type 1-6
Step 4. Selecting a Host 1-7
SNA Hosts .............. 1-7
ASCII Hosts ............. 1-7
Step 5. Logging on to the SNA Host 1-8
Error Messages ............... 1-9
Chapter 2. Operating in Full-Screen Mode 2-1
Understanding the Display Image 2-2
Input Fields 2-2
Numeric Fields
2-3
Protected Fields 2-4
Nondisplay Fields 2-4
Field Attribute Locations 2-4
Using Your Keyboard 2-5
Keyboard Maps
...... 2-5
Terminal Controlled Keys 2-5
3270 Functions 2-5
Non-3270 Functions 2-10
Reading the Status Line 2-12
Status Line Format . 2-12
Ready Status
... 2-12
Device Emulation 2-12
Session Indicator
2-13
Session Status 2-13
Insert Status 2-16
Null Blank Status 2-16
Type-Ahead Status 2-16
Printer Status 2-16
NNN Codes ..... 2-17
Communicating with the Host Control Program
2-18
Using Light Pen Emulation 2-19
Selection Fields
........... 2-19
Attention Fields
........... 2-19
Printing Screen Images (Local Copy) 2-20
Print
ID ........ 2-20
Changing the Print
ID 2-20
Printing . . . . . . . . .
2-21
Printer not Working 2-21
Cancelling a Print Request 2-21
Contents ix