Note: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits.
The manufacturer is not responsible for any radio or television interference caused by using other than
recommended cables and connectors or by unauthorized changes or modifications to this equipment.
Unauthorized changes or modifications could void the user’s authority to operate the equipment.
The input/output (I/O) cable must be shielded for the printer to comply with FCC rules and regulations Part
15 governing the radiation limits for Class “A” equipment.
This Class A digital apparatus meets all requirements of the Canadian Interference–Causing Equipment
Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur
du Canada.
WARNING
This is a Class A product. In a domestic environment this product may cause radio interference in which
case the user may be required to take adequate measures.
Printronix, Inc. makes no representations or warranties of any kind regarding this material, including, but not
limited to, implied warranties of merchantability and fitness for a particular purpose. Printronix, Inc. shall not
be held responsible for errors contained herein or any omissions from this material or for any damages,
whether direct, indirect, incidental or consequential, in connection with the furnishing, distribution,
performance or use of this material. The information in this manual is subject to change without notice.
This document contains proprietary information protected by copyright. No part of this document may be
reproduced, copied, translated or incorporated in any other material in any form or by any means, whether
manual, graphic, electronic, mechanical or otherwise, without the prior written consent of Printronix, Inc.
All rights reserved. Revision B. January 1996.
Trademark Acknowledgements
IBM is a registered trademark of International Business Machines Corporation.
Printronix is a registered trademark of Printronix, Inc.
RibbonMinder is a trademark of Printronix, Inc.
This Setup Guide is designed so you can quickly find the information you
need to install and configure your P4280–CT Twinax printer.
How to Locate Information
•Use the Table of Contents at the front of the guide.
•Use the Chapter Contents listed on the first page of each chapter.
•Use the alphabetical Index at the back of the guide.
•Use the Glossary to learn about printer terms and acronyms.
Warnings and Special Information
For your safety and to protect valuable equipment, it is very important that
you read and comply with all information highlighted under special
headings:
WARNING
Conditions that could harm you as well as damage the equipment.
CAUTION
Conditions that could damage the printer or related equipment.
IMPORTANT
Information vital to proper operation of the printer.
NOTE: Information and helpful tips about printer operation.
1–2Introduction
Switches and Display Messages
Switches, indicators, and control panel messages are printed in uppercase
letters. For example, “Press the FORM FEED switch to advance the paper.”
Combinations are indicated with the plus (+) sign. “Press FUNC + CANCL”
means to hold down the FUNC switch and then press CANCL.
Related Documents
For more information about your printer, refer to the following Printronix
documents:
•P4280–CT Operator’s Guide — Includes step–by–step instructions on
daily printer operations.
•Coax/Twinax Control Codes Programmer’s Reference Manual —
Provides detailed descriptions of control codes and character sets used by
IBM printers. This manual will assist programmers who wish to create
and send custom data streams to the printer.
1–3Introduction
The P4280–CT Twinax Printer
The P4280–CT TwinaxCoax printer provides the following features:
•Print speeds of up to 800 lines per minute (lpm)
•Emulation of IBM 5225 Models 1, 2, 3 and 4 printers
•Emulation of IBM 4234 Model 2 printers
•Quiet operation
Figure 1–1. The P4280–CT Twinax Printer
1–4Introduction
Options
Operation
The Intelligent Graphics Processor (IGP) board allows you to create and
store forms, generate logos, bar codes, expanded characters, and create other
graphics. Alphanumeric and bar code data are added as the form is printed.
The IGP is available as a factory–installed or field–installed option. For more
information about the IGP option, talk to your authorized Printronix
representative.
The printer is equipped with a twinaxial integrated interface, referred to as
the CT. The CT is a printed circuit board assembly and hardware interface
that enables the P4280 printer to emulate IBM 5225 Models 1, 2, 3 and 4 and
IBM 4234 Model 2 printers. You can attach the P4280–CT directly to an
IBM network.
IBM printers accept data coded in IBM’s Extended Binary Coded Decimal
Interchange (EBCDIC) protocol. The P4280–CT accepts American Standard
Code for Information Interchange (ASCII) data. To process the data and
control codes sent from an IBM host computer, the CT converts EBCDIC to
an expanded ASCII character set and sends the data to the printer’s PCBAs
for further processing.
Emulation Pass–through Feature
Although the P4280–CT emulates IBM 5225 and 4234 model printers, it is
not restricted to their printing functions. With the Printronix pass–through
feature your printer can also access the following functions:
•Selectable pitch
•Emphasized print
•Bold print
•Expanded print
•Automatic underline
•Automatic overscore
•Superscript/Subscript printing
•Built–in diagnostic self–tests
1–5Introduction
Emulation Exceptions
The following IBM features are not available with the P4280–CT printer:
•AC line cords of 12 and 15 feet
•AC line cord with locking power plug
•Friction feed paper handling
•Character dot matrix of 9 positions wide by 8 high
The P4280–CT printer is easy to install, but for your safety and to protect
valuable equipment, do all the procedures in this chapter, and do them in the
order presented.
Select a Power Source
It is recommended that printer power be supplied from a separate AC
circuit protected at 20 amperes for 120 volts, or 10 amperes for 240 volts
at 50 or 60 hertz.
Es wird empfohlen, dass der Strom von einem separaten
Wechselstromkreis dem Drucker zugeführt wird, der mit 20 Ampere für
120 Volt oder 10 Ampere für 240 Volt mit 50 oder 60 Hertz geschützt ist.
CAUTION
VORSICHT
PRÉCAUTIONS
Il est donc recommandé d’alimenter l’imprimante par l’intermédiaire
d’un circuit séparé protégéà 20 ampères pour 120 volts et à 10 ampères
pour 240 volts à 50 ou 60 Hz, même si elle ne dépassera pas 15 ampères à
110 volts.
Connect the printer to a power outlet of 100–120 Volts AC or 200–240 Volts
AC at 50 or 60 Hz. The P4280–CT automatically senses and adjusts itself to
conform to the correct voltage range.
The on/off switch is also a circuit breaker, providing primary circuit
protection.
Consult an electrician if printer operation affects local electrical lines. See
Appendix A for power specifications.
2–2Setting Up the Printer
Select a Site
Select a printer site that:
•Permits complete opening of the printer cover and both doors of the floor
•Has a power source of 100–120 VAC or 200–240 VAC at 50 or 60 Hz.
•Is relatively dust–free.
•Is located within the maximum cable length requirements for interface to
•Ranges in temperature from 10° Cto 40° C (50° F to 104° F), with a
Printer dimensions are shown in Figure 2–1.
Cabinet Rear Door
cabinet.
the host computer.
relative humidity of 10% to 90%.
Printer Cover
57.2 cm
(22.5 in.)
191.5 cm
(75.4 in.)
68.4 cm
(26.9 in.)
68.6 cm
(27.0 in.)
Figure 2–1. Printer Dimensions
146.1 cm
(57.5 in.)
102.5 cm
(40.3 in.)
68.6 cm
(27.0 in.)
2–3Setting Up the Printer
Remove the Shipping Restraints
To prevent possible injury, do not connect the AC power source before
removing the shipping restraints. If the power source has already been
connected, disconnect it before performing the shipping restraint
removal procedures. To avoid shipping damage, reinstall the shipping
restraints whenever the printer is moved or shipped.
Um mögliche Verletzungen zu vermeiden, darf die Netzverbindung erst
nach dem Entfernen der Transportbefestigungen hergestellt werden. Um
Versandschäden zu verhindern, die Versand–Einspannungen wieder
einbauen, wenn der Drucker versetzt oder versand wird.
Pour éviter tout danger, ne branchez pas le cordon d’alimentation avant
d’avoir ôté les cales de transport. Si l’alimentation est déjà raccordée,
débranchez–la avant d’effectuer les procédures d’enlèvement des cales.
Pour éviter tout dégât lors du transport, remettez les cales en place
chaque fois que l’imprimante est déplacée ou transportée.
WARNING
WARNUNG
ATTENTION
Foam pads and tie wraps protect printer mechanisms from damage during
shipment. You must remove these shipping restraints before you operate the
printer.
Save the foam pads and extra tie wraps with other packing materials.
To reinstall the shipping restraints, simply reverse the steps in this section.
2–4Setting Up the Printer
Remove the Tie Wraps and Outer Foam Pads
1. Raise the printer cover.
2. Cut and remove the tie wraps securing the paper fence. (See Figure 2–2.)
3. Remove the outer foam pads.
Tie Wrap
Outer Foam
Pad (Left)
Paper Fence
Tie Wrap
Outer Foam
Pad (Right)
Figure 2–2. Removing the Tie Wraps and Outer Foam Pads
2–5Setting Up the Printer
Remove the Platen Protective Foam
1. Open the tractor gates. Push the tractor locks down. Move the tractors
outward as far as they will go. (See Figure 2–3.)
2. Rotate the forms thickness lever away from you as far as it will go; this
is the fully open position.
3. Rotate the platen protective foam toward the front of the printer and out
from under the splined shaft. Remove the platen protective foam.
Platen Protective Foam
Splined Shaft
Tractor Gate
Tractor Lock
Tractor Gate
Figure 2–3. Removing the Platen Protective Foam
Forms
Thickness
Lever
2–6Setting Up the Printer
Remove the Hammer Bank Protective Foam
1. Rotate the hammer bank protective foam toward the front of the printer
and remove it from between the ribbon mask and hammer bank. (See
Figure 2–4.)
Hammer Bank
Protective Foam
Figure 2–4. Removing the Hammer Bank Protective Foam
2–7Setting Up the Printer
Remove the Protective Film
1. Carefully peel the protective film off the control panel. (See Figure 2–5.)
Protective Film
2–8Setting Up the Printer
Figure 2–5. Removing the Protective Film
Release the Paper Chains
1. Open the rear cabinet door.
2. Cut the tie wraps and release the paper chains from the bags at the rear of
the printer frame. Remove the tie wraps and bags. (See Figure 2–6.)
3. Make sure each chain hangs freely, with no kinks or knots.
4. Close the rear cabinet door.
Tie Wrap
Tie Wrap
Paper
Chains
Plastic
Bag
Figure 2–6. Releasing the Paper Chains
2–9Setting Up the Printer
Connect the Cables
1. Verify that the voltage source at the printer site conforms to the
requirements specified on page 2–2.
2. Make sure the printer power switch is set to O (off). (See Figure 2–7.)
3. Plug the power cord into the printer’s AC power connector and into the
AC line receptacle.
4. Set the device address and device ID before connecting the twinax cable.
(Refer to page 3–26 and page 3–27.)
5. Connect the twinax cable (customer supplied) to either of the twinax
connectors on the smart “T” connector. Connect the smart “T” to the
15–pin “D” connector.
6. Set the coax / twinax switch to the twinax position.
2–10Setting Up the Printer
Coax/Twinax Switch
15–pin “D” Connector
Power Switch
AC Power Connector
“Smart T”
Twinax
Connector
Figure 2–7. Connecting the Cables
2–11Setting Up the Printer
Test the Printer
To test your printer:
1. Referring to your Operator’s Guide, do the following:
a.Install the ribbon.
b. Turn the printer on.
c.Load full–width (132 column) computer paper.
2. Raise the printer cover.
3. Make sure the printer is in the hold mode. If the message display reads
ENABLE PRINT, press the ENABLE / HOLD switch to put the printer
in the hold mode.
4. Press TEST / ENTER to start the test.
5. The printer prints shifted lines of the present character set across the
paper (80 columns wide).
6. Press TEST / ENTER to stop the test.
7. Press FORM FEED.
8. Examine the print quality of the characters. They should be fully formed
and of uniform density. If the test does not run or if text characters do not
appear correctly formed, contact your authorized service representative.
9. Press ENABLE / HOLD to return the printer to the enable mode.
10. Close the printer cover. The printer is ready for operation.
Configuration directly affects printer operation. Do not change the
configuration of your printer until you are thoroughly familiar with
the procedures in this chapter.
In order to print data, the printer must respond correctly to signals and
commands received from the host computer. Configuration is the process of
matching the printer’s operating characteristics to those of the host computer.
The characteristics that define the printer’s response to signals and
commands received from the host computer are called configuration
parameters.
This chapter shows you how to set printer configuration parameters to match
the operating characteristics of the host computer system.
Configuration Methods
IMPORTANT
You can configure the printer with the control panel or with format
commands sent in the data stream from the host computer. This chapter
explains how to configure the printer with the control panel. Data stream
commands are in the Coax/Twinax Control Codes Programmer’s ReferenceManual.
Control Panel vs. Data Stream Commands
Control panel settings can be saved in non–volatile random access memory
(NVRAM), data stream commands cannot. For details on NVRAM, refer to
“NVRAM Options” on page 3–28.
You can configure the printer so that one of the following occurs:
•Data stream commands override the control panel settings.
•The control panel settings are frozen and cannot be altered by data
stream commands. See “Overriding the Host” section on page 3–25.
3–3Configuring the Printer
Data Stream Commands and the Message Display
Suppose you send data stream commands and they are allowed to override
the control panel settings. This does not affect the message on the message
display. For example, if you set the line spacing to 8 lpi with the control
panel and later set the lpi to 12 with a data stream command, the data stream
setting overrides the control panel setting. But, the message display will
show 8 lpi even though the printer is set to 12 lpi.
The Program Mode
The program mode is an operating state that allows you to configure the
printer with the control panel. The program mode is either locked or
unlocked.
Locking the Program Mode
When the program mode is locked, configuration settings cannot be altered.
Locking secures your settings. Pressing FUNC + CANCL locks the program
mode.
The PGM switch, which is used for configuring, is inactive. Pressing the
PGM switch in the locked mode displays the following message until the
next switch is pressed:
HOLD PRINT
PGM STA
TE LOCKED
Unlocking the Program Mode
To make configuration changes, the program mode must be unlocked. Press
FUNC + PGM to unlock the mode. The message display shows this message:
HOLD PRINT
PGM STATE UNLOCK
3–4Configuring the Printer
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