R
P/N 136580-001, Rev C
R
Communication Notices
Federal Communications Commission (FCC) Statement: This equipment has been tested and
found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference, in which case the user will be required to
correct the interference at his own expense.
Properly shielded and grounded cables and connectors must be used in order to meet FCC
emission limits. Printronixr 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.
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.
Canadian Department of Communications Compliance Statement:
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing
Equipment Regulations.
Avis de conformité aux normes du ministère des Communications du Canada:
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le
matériel brouilleur du Canada.
European Union (EC) Electromagnetic Compatibility Directives:
with the protection requirements of EC Council Directive 89/336/EEC on the approximation of the
laws of the Member States relating to electromagnetic compatibility. Printronixr cannot accept
responsibility for any failure to satisfy the protection requirements resulting from a
non-recommended modification of the product, including the fitting of non-Printronixr option
cards.
Dieses Gerät ist berechtigt in Übereinstimmung mit dem deutschen EMVG vom 9.Nov.92 das
EG-Konformitätszeichen zu furhren.
Properly shielded and grounded cables and connectors must be used in order to reduce the
potential for causing interference to radio and TV communication and to other electrical or
electronic equipment.
This product has been tested and found to comply with the limits for Class B Information
Technology Equipment according to CISPR 22 / European standard EN 55022. The limits for
Class B equipment were derived for typical environments to provide reasonable protection
against interference with licensed communication devices.
This product is in conformity
Dieses Gerät erfüllt die Bedingungen der EN 55022 Klasse B.
Trademark Acknowledgements
Printronix and IGP are registered trademarks of Printronix, Inc.
ThermaLine and PGL are trademarks of Printronix, Inc.
Centronics is a registered trademark of Genicom Corp.
IBM is registered trademark of International Business Machines Corp.
17500 Cartwright Road, P.O. Box 19559
Irvine, California 92623-9559
elephone (714) 863–1900 F
T
Technical Support (714) 221–2686
COPYRIGHT 1996, 1997 PRINTRONIX, INC.
AX (714) 660–8682
Important Warranty Information
Printer Warranty
Printronix
thermal printhead) purchased hereunder shall be free from defects in material and workmanship
for a period of ninety (90) days from the date of shipment from Printronix.
Consumable items such as media and ribbons are not covered under this warranty. This warranty
does not cover equipment or parts that have been misused, altered, or used for purposes other
than those for which they were manufactured. This warranty also does not cover loss, shipping
damage, damage resulting from accident or damages resulting from unauthorized service.
Thermal Printhead
Printronix warrants the printhead for a period of ninety (90) days, or 1,000,000 linear inches
(Thermal Transfer/Direct Thermal) of use, whichever comes first. The warranty does not cover
printheads that have been misused, damaged due to improper cleaning, or damaged due to use
of improper ribbons or media.
Supplies
For the number of the nearest Printronix full-service distributor that carries Printronix genuine
supplies, please call 1–800–733–1900. Enclosed in the supplies starter kit that accompanied this
printer is a listing of available ribbons and media for your printer. Supplies design, specification,
and selection are critical and integral to the development of any computer imaging system.
Printronix extensive manufacturing and research capabilities, along with years of experience in
the design of printers and their applications, assures that you will receive the exact materials that
you require to maximize the performance of your Printronix printer.
warrants to purchaser that under normal use and service, this printer (excluding the
On-Site Maintenance Service
Printronix offers on-site support services in the United States. Please contact the Printronix
Maintenance Contracts Group at (714) 863–1900, Extension 2798, for detailed service
agreement information.
Table of Contents
1
2
3
Introduction and Overview
Introduction 1–2.
Warnings and Special Information 1–4.
T3204/T3304 Printer Overview 1–4.
Operational Specifications 1–5.
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Setup and Configuration
Printer Setup 2–2.
DIP Switch Settings 2–2.
Connecting Power 2–3.
Host Interfacing 2–4.
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Basic Operations
Introduction 3–2.
Primary Operator’s Panel 3–2.
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4
Secondary Operator’s Panel 3–3.
The Menu System 3–3.
Media and Ribbons 3–4.
Printing Modes 3–4.
Media Loading 3–5.
Ribbon Installation and Removal 3–8.
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Maintenance and Adjustments
Introduction 4–2.
Cleaning 4–2
General Cleaning 4–2.
Cutter and Tear Bar 4–2.
Printhead 4–3
Adjustments 4–4
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Table of Contents i
Platen Adjustment 4–4.
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5
6
Media Width Adjustment 4–5.
Printhead Alignment Adjustment 4–6.
Printhead Lift Adjustment 4–7.
Ribbon Setup Adjustment 4–7.
Label Tracking 4–7.
Electrical Adjustments 4–8.
Printhead Voltage Adjustment 4–8.
Media Sensor Voltages 4–9.
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Options
Introduction 5–2
Factory Installed Only 5–2.
Field or Factory Installed 5–2.
Field Installed Only 5–2.
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Troubleshooting
7
Overview 6–2
Printing Pre-programmed Labels 6–2.
LP+, IGP/PGL, IGP/VGL Labels 6–2.
IGP/FGL Labels 6–2.
Power On Self-Test 6–3.
Error Messages 6–3.
Preparing for Troubleshooting 6–3.
Initial Steps 6–4.
Using the Troubleshooting Charts 6–4.
Problem Isolation Checklist 6–5.
Troubleshooting Procedures 6–6.
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Removal and Replacement
Overview 7–2.
Cover 7–3
Printhead 7–6
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Printer Controller PCBA (Main Logic Board) 7–7.
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Table of Contentsii
Power Supply (Switch Regulator Assembly) 7–8.
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8
9
Lower Timing Belt (203 DPI) 7–11.
Lower Timing Belt (300 DPI) 7–13.
Upper Timing Belt 7–15.
Drive Motor Assembly 7–17.
Platen 7–19
DRAM 7–22
EPROMs 7–24
NVRAM 7–26
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Circuit Description
Introduction 8–2.
Printer Controller PCBA 8–2.
Microprocessor and Related Circuits 8–2.
Connector Function Summary 8–14.
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Spare Parts
Cover Assembly 9–2.
Operator Panel Assemblies 9–4.
Mechanism Assembly (1.5 Inch Media Supply Hub) (1 of 4) 9–6.
Mechanism Assembly (3.0 Inch Media Supply Hub) (2 of 4) 9–8.
Mechanism Assembly (3 of 4) 9–10.
Mechanism Assembly (4 of 4) 9–12.
Printhead Mount Assembly 9–14.
Linkage Assembly 9–16.
Bearing Plate Lower Assembly 9–18.
Media Sensor Assembly 9–20.
Thermal Transfer Mechanism (1 of 2) 9–22.
Thermal Transfer Mechanism (2 of 2) 9–24.
Rewind Option Assembly (1 of 2) 9–26.
Rewind Option Assembly (2 of 2) 9–28.
Final Assembly 9–30.
Label Guide Assembly 9–32.
Ribbon Saver Option (1 of 2) 9–34.
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Ribbon Saver Option (2 of 2) 9–36.
Table of Contents iii
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Head Lifter Assembly 9–38.
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Media Hub Assembly (Standard) 9–40.
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Adjustable Media Hub Assembly Option 9–42.
Present Sensor Option 9–44.
Cutter and Tray Options 9–46.
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Table of Contentsiv
1
Chapter Contents
Introduction and Overview
Introduction 1–2.
Warnings and Special Information 1–4.
T3204/T3304 Printer Overview 1–4.
Operational Specifications 1–5.
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Introduction and Overview 1–1
Introduction
The T3204–20, T3204–21, T3304–20 and T3304–21 are high speed, high
capacity bar code printers designed for industrial and other high volume
applications. They feature direct thermal and thermal transfer print
technologies. The distinguishing characteristics of each printer model are
shown below in Table 1–1.
These printers are designed so all replacements and adjustments may be
easily performed, providing both a high level of performance and minimal
maintenance requirements.
The printers are factory installed with many standard bar code symbologies,
as well as a variety of font styles and sizes. Setup parameters are entered by
keying in menu choices through the secondary operator control panel, which
eliminates the need to set internal DIP switches.
The printer can be equipped with a variety of options such as a cutter, peel
and present (requires the factory-installed media internal rewind option),
adjustable media supply hub, Centronics
coax/twinax host interface, on-line verification capability, DRAM expansion,
internal batch cartridge (IGP
are also additional factory installed only options available such as media
internal rewind and ribbon saver.
-compatible parallel host interface,
/FGL only), font and memory cartridges. There
This manual is intended to provide the service person with all information
necessary to setup, adjust, troubleshoot and perform any required
maintenance on the printers. For information on configuration parameters
and day-to-day printer operation, refer to the Setup and Operator’s Guides
corresponding to the specific emulation installed in the printer.
NOTE: As used in this manual, the word “printer” refers to both the T3204
and T3304 except as noted below.
Table 1–1. Thermal Printer Model Summary
Model
Printing Method Resol.
(dpi)
Max. Print
Speed (ips)
T3204–20 Direct Thermal Only 203 10
T3204–21 Direct Thermal and Thermal Transfer 203 10
T3304–20 Direct Thermal Only 300 8
T3304–21 Direct Thermal and Thermal Transfer 300 8
Introduction and Overview1–2
The Printronix
• Installation
• Configuration and Setup
• Operation and Supplies Loading
• Specifying the proper media and ribbon
• Post sales service support questions
Call the Printronix ThermaLine Help Desk at (714) 221–2488 or visit the
Printronix Web Page at http://www.printronix.com.
Introduction and Overview 1–3
Figure 1–1. Printer Overall View
ThermaLinet Help Desk offers technical support with:
Warnings and Special Information
Information requiring special attention is indicated under special headings
Always read and comply with this information. The heading reveals the
nature of the information:
Conditions that could harm you as well as damage the equipment.
Conditions that indicate the possibility of damage to a program, device,
system, or data.
NOTE: A note gives you helpful tips about printer operation and
maintenance.
T3204/T3304 Printer Overview
.
WARNING
CAUTION
In general terms, the printer may be divided into four main areas: the Media
Path, Printhead, Electronics and Power, and Options.
Media Path consists of the transport mechanism which moves print media
through the printer, and includes the supply and take-up hubs, motors, drive
belts and idler rollers.
Printhead contains the printhead and printhead mounting assembly, ribbon
transport, printhead adjustments, printhead home sensor and latching
mechanism.
Electronics and Power includes the i960 Printer Controller PCBA, the primary
operator’s control panel, secondary operator’s panel, secondary operator’s
panel PCBA and power supply.
Options include the Centronics-compatible parallel interface, media cutter
and tray, ribbon saver, media rewinder, peel and present mechanism,
adjustable media supply hub and memory expansion options.
Introduction and Overview1–4
Operational Specifications
Printing
Type: T3204–20 and T3304–20: Direct thermal only
Resolution: T3204–20 and T3204–21: 203 dpi
Max. Print Speed: T3204–20 and T3204–21: 10 ips
Bar Code Modulus: T3204–20 and T3204–21: 5 mil to 110 mil “X”
Max. Print Width: 4.1 inches (104.1 mm)
Maximum Print T3204–20 and T3204–21: 23 inches (584.2 mm)
Length (*): with standard memory
T3204–21 and T3304–21: Direct thermal and thermal
transfer
T3304–20 and T3304–21: 300 dpi
T3304–20 and T3304–21: 8 ips
dimension in picket fence or ladder orientations
T3304–20 and T3304–21: 3.3 mil to 110 mil ”X”
dimension in picket fence or ladder orientations
T3304–20 and T3304–21: 10 inches (254.0 mm)
with standard memory
Minimum Print Length: 0.25 inch (6.4 mm)
Minimum Dot Size: 0.0050 inch (0.125 mm) square (T3204–20 and T3204–21)
0.0033 inch (0.083 mm) square (T3304–20 and T3304–21)
Label Backfeed: For use with optional cutter
(*) May be increased to 24 inches (609.6 mm) with optional DRAM
expansion.
Introduction and Overview 1–5
Fonts
Resident Fonts: Smooth, scaleable Courier, Letter Gothic and CG
Optional Fonts: Agfa scaleable, proportional and monospaced available.
Font Expansion: All fonts expandable vertically and horizontally.
Bar Codes
IGP/PGL and IGP/VGL
Code 39, Interleaved 2 of 5, Code 128 (subsets A, B and C), Codabar,
UPC–A, UPC–E, UPC 2 and 5 digit addendums, EAN–8, EAN–13,
EAN 2 and 5 digit addendums, Code 93, MSI Plessey
only) Postnet, FIM, UCC 128 and PDF 417 (IGP/PGL only)
Triumvirate Bold Condensed fonts in portrait and
landscape orientations (LP+, IGP/PGL and IGP/VGL
emulations).
Nine alphanumeric fonts in portrait and landscape
orientations (IGP/FGL emulation).
, UPCSHIP (IGP/VGL
IGP/FGL
Code 39, Interleaved 2 of 5, Code 128 (Subsets A, B, and C) Codabar,
UPC–A, UPC–E, UPC 2 and 5 digit addendums, EAN–8, EAN–13,
EAN 2 and 5 digit addendums, Code 93, UPC random weight, Universal
Shipping Container Symbology Plessey, Postnet, UCC/EAN 128,
PDF 417 and Maxicode
Introduction and Overview1–6
Media and Ribbons
Width: 0.5 inch (12.7 mm) to 4.65 inches (118 mm)
Thickness: 0.0025 inch (0.0635 mm) to 0.0100 inch (0.254 mm)
Type: Roll-fed, die-cut continuous or fan-fold labels, tags or
Supply Roll: 8 inches (203 mm) maximum diameter on a 3.0 inch
Label Material: Thermal transfer plain-coated papers, vinyl, Mylar, metalized
Thermal Ribbons: Standard widths are 25, 40, 60, 80 and 110 mm,
Media Sensing: Moveable ”see-through” for die-cut labels and
tickets; most direct thermal or thermal transfer materials
(76.2 mm) core
paper, non-woven fabric, fine woven fabric, thermal-visible
light scanable paper, infrared scanable paper, thermal
ticket/tag stock, thermally sensitive plastic stock.
1476 ft. (450 m) in length.
reflective for tags with black striping.
NOTE: The reflective sensor mark must be carbon based. The sensor is
infrared and will not reflect off of a plain black mark.
Approved Media List
For a current list of approved standard media for use in Printronix thermal
and thermal transfer printers, please call Printronix at (800) 733–1900 or FAX
(714) 476–2135. Further information can be obtained by calling the Printronix
ThermaLine Help Desk at (714) 221–2488 or from the Printronix Web Page
at http://www.printronix.com.
Introduction and Overview 1–7
Label/Tag Media Specifications
Figure 1–2. Media Specifications
Table 1–2. Media Specifications
⇓ Direction of Media Motion
Dimension Description T3204/T3304
Max(in.) Min(in.)
A Label width 4.65 0.75
B Backing width 4.65 0.75
C Gap between
labels
D Label length (*) 0.250
E+F Media thickness 0.010 0.0046
G Width of sensor
opening
H Edge of media to
edge of sensor
opening distance
I Reflective sensor
mark width
J Distance between
reflective mark
K Reflective sensor
mark length
(*) 24.00 inches (LP+, IGP/PGL, IGP/VGL) with optional DRAM expansion
module
99.99 0.100
0.500 0.200
2.250 0.200
4.00 1.000
99.99 0.500
99.99 0.100
99.99 inches (IGP/FGL) with optional DRAM expansion module
Introduction and Overview1–8
Indicators and Switches
Indicator Lights:
Switches:
LCD Display: 2 x 16 characters for error messages, print status, and
Host Interfacing
Serial:
Electrical: RS–232C or RS–422
Baud Rate: 300, 600, 1200, 2400, 4800, 9600, or 19,200 baud
Character Set:
Word Length: Selectable 7-bit or 8-bit data format
Handshaking: XON/XOFF (in receive mode only) and CTS/DTR
Electrical
POWER, RIBBON/MEDIA, ON LINE/P
POWER, ON LINE/P
AUSE, FEED, CANCEL
recalling stored formats
ANSI ASCII
AUSE
Power Source: 90–132 VAC or 180–264 VAC, 47–63 Hz
Circuit Protection: Two 2 amp, 250V slo-blo fuses
Grounding: Printer must be connected to a properly grounded
Environmental
Operating Temp: 40ºF to 100ºF (4ºC to 38ºC)
Storage Temp: –40ºF to 120ºF (–40ºC to 49ºC)
Operating RH: 10% to 90% non-condensing
Storage RH: 5% to 95% non-condensing
Ventilation: Convection cooled
Dust: Non-conducting, non-corrosive
Physical
receptacle
Dimensions: 11.4”H x 10”W x 18.3”D (289.6 mmH x 154 mmW x
Introduction and Overview 1–9
464.8 mmD)
Options
Internal Rewind: 5.0 inches (127 mm) maximum O.D. capacity
Cutter: Maximum thickness of 0.010 inch (0.254 mm).
(Certain types of media are excluded.)
Ribbon Saver: Automatically saves ribbon for blank media areas
Label Present Sensor: Detects the presence of a label at either the tear off bar
or the peel and present station
Adjustable Media Allows the use of media rolls with 1.5, 1.75, 2.0
Supply Hub: and 3.0 inches (38.1, 44.5, 50.8 and 76.2 mm) inner
diameters
Internal DRAM
Memory: 4 or 16 MByte DRAM SIMMs can be added
Flash Memory 256 KBytes or 512 KBytes used for permanent
Cartridges: storage of custom fonts, graphics and formats
Parallel Host Interface: Centronics-compatible, used for high speed connection
to host
Coax/Twinax Interface: Provides protocol converter functionality and
connectivity for IBM coax/twinax host interfaces
Introduction and Overview1–10
2
Chapter Contents
Setup and Configuration
Printer Setup 2–2.
DIP Switch Settings 2–2.
Connecting Power 2–3.
Host Interfacing 2–4.
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2–1Setup and Configuration
Printer Setup
Switch Number
ON
OFF
The printer is designed for easy setup using a software based menu system.
The menu system controls printing parameters such as contrast or print
position, communications protocols, the selection of printer options and
emulation modes. The menu also provides maintenance functions and tests
which are accessible depending upon the setting of an internal switch (see
below).
See page 3–3 for an overview of the menu system. For a detailed
explanation, see the
installed in the printer.
DIP Switch Settings
DIP Switch S3 (see Figure 2–1) in an 8-position switch located on the Printer
Controller PCBA. The functions of this switch are specified in Table 2–1.
Setup Guide
corresponding to the particular emulation
ON OFF
Figure 2–1.
Table 2–1. DIP Switch S3 Settings
S3–1 Front Panel LOCKED Front Panel UNLOCKED
S3–2 Not Used Not Used
S3–3 Not Used Not Used
S3–4 Not Used Not Used
S3–5 Not Used Not Used
S3–6 Not Used Not Used
S3–7 Not Used Not Used
S3–8 RS–422 TERMINATED RS–422 NOT TERMINATED
2–2 Setup and Configuration
DIP Switch S3
Connecting Power
The standard printer is configured for 115 V
AC
10%, single-phase,
50/60Hz power source. The printer should be connected to a properly
grounded receptacle. The printer is also manufactured for 230 VAC
operation. A small sticker next to the AC power connector states the power
requirements.
WARNING
Failure to comply with this information can result in personal injury
and/or damage to the printer and its associated equipment.
Check the rear AC switch settings before applying power. The facing arrows
must be selected to match the supplied voltage rating: 115 VAC or 230 VAC.
AC Power Connector
Facing arrows indicate
selected voltage
Figure 2–2. AC Input Power Connector
If the printer AC power setting does not match the available AC power, follow
instructions outlined below.
• Remove the AC power cord (if installed).
• Insert flat blade screwdriver into release slot and push out voltage
selector/fuse holder switch.
• Rotate the fuse holder/voltage selection switch 180 degrees and
re-insert it.
• Attach the proper power cord.
2–3Setup and Configuration
Flip over and reinsert
Host Interfacing
The printer is extremely versatile and able to operate with a personal computer in
either serial or, optionally, parallel Centronics-compatible communications modes as
well as with IBM midrange computer systems using the optional twinax/coax
interface adapter. When using the standard serial port, the printer is DTE equipment
and supports both CTS/DTR and XON/XOFF handshaking.
Power Switch
Release Slot
Voltage Selection
Switch/
Fuse Holder
Figure 2–3. Selecting Printer for 230 VAC Operation
The printer can also communicate in an “internal batch” mode with a standalone
terminal such as the LINK CRT (available only with the IGP/FGL emulation.)
RS232/RS422
Serial Connector
RS232
Cable from
Host Computer
Accessory Jack
AC Power Switch
AC Power
Cord
Fuse
Holder
AC Power Connector
Figure 2–4. Cable Connections
2–4 Setup and Configuration
3
Basic Operations
Chapter Contents
Introduction 3–2.
Primary Operator’s Panel 3–2.
Secondary Operator’s Panel 3–3.
The Menu System 3–3.
Media and Ribbons 3–4.
Printing Modes 3–4.
Media Loading 3–5.
Ribbon Installation and Removal 3–8.
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Basic Operations 3–1
Introduction
This section describes the basic operations of the printer, including an
overview of the Primary and Secondary Operator’s Panels, loading label
media, replacing ribbons and the printer self test functions.
Printer operations are controlled both by a set of key switches on the Primary
Operator’s Panel on the face of the printer, and by a set of key switches on
the Secondary Operator’s Panel which is concealed behind a door on the
lower left front of the printer (Figure 3–1 and Figure 3–2, respectively).
The most basic functions (i.e., starting and stopping print, feeding media,
etc.) are controlled by the Primary Operator’s Panel. The Secondary
Operator’s Panel controls all other printer functions including setting defaults,
communication protocols, options, and advanced/service functions.
The Liquid Crystal Display, located in the upper left front of the printer, shows
printer status information, error messages and, when used with the
Secondary Operator’s Panel, displays the menu options. As in the case of
the operator panels, the messages displayed on the LCD are different,
depending upon which emulation is installed in the printer.
NOTE: There is one set of functions and messages for LP+, IGP/PGL and
IGP/VGL and another set for IGP/FGL.
Primary Operator’s Panel
The functions of the Primary Operator’s Panel key switches, meanings of the
LED status indicators and messages displayed on the LCD are described in
the
Setup Guide
printer. Refer to this document for detailed information.
associated with the particular emulation installed in the
Figure 3–1. Primary Operator’s Panel and LCD
Basic Operations3–2
Secondary Operator’s Panel
SHIFT
ENTER
Figure 3–2. Secondary Operator’s Panel
The secondary operator’s panel is located behind a door on the lower left
front of the printer. Pushing in on the door will both open and close it. This
panel consists of six push-button type key switches and also contains a
contrast control for the LCD display.
The functions of the Secondary Operator’s Panel key switches are described
Setup Guide
in the
printer. Refer to this document for detailed information.
The Menu System
The menu structure is divided into two functions levels: Basic and
Advanced/Service.
The Basic function level allows the operator to check the machine status,
change the print contrast, adjust label position, select various media handling
modes, etc. The Basic function level is available to all users.
The Advanced/Service function level includes those functions which (1) an
operator would not be expected to access and (2) are restricted to service
procedures. Access to the Advanced/Service functions of the printer is
controlled by (1) the setting of DIP Switch S3–1 (see page 2–2) and (2) a
secondary control panel menu key sequence (only if the LP+, IGP/PGL or
IGP/VGL emulations are installed). A full description of all menu functions
can be found in the
installed in the printer.
associated with the particular emulation installed in the
Setup Guide
associated with the particular emulation
Basic Operations 3–3
Media and Ribbons
The following section describes the available print modes, the types of print
media that can be used in the printer, how to install media and how to install
and remove ribbons.
Printing Modes
The printer is able to print using either of two methods, direct thermal or
thermal transfer. Both methods use heat to produce a printed image; they
differ only in the way in which the heat is applied.
In thermal transfer printing, the individual dot elements of the printhead apply
heat to a ribbon. The “ink” on the ribbon is a specially formulated material
that is literally melted into the print media, bonding with the media to produce
the black dots that form an image.
Direct thermal printing dispenses with a ribbon and instead applies heat
directly to the print media. This media is formulated to react to the heat by
turning black. Direct thermal printing requires the use of a special direct
thermal print media. It also requires that, if a ribbon is already installed, it
must be removed.
NOTE: Using direct thermal print media with a ribbon will produce very poor
print quality.
Basic Operations3–4
Media Loading
The printer supports up to an 8 inch (203 mm) diameter media roll. If media
with a width of less than 4 inches is used, refer to page 4–5 before loading
media.
Follow the instructions outlined below when installing media stock.
1. Open the printer side access cover.
2. Rotate the printhead latch (1) counter-clockwise to unlatch and raise the
printhead to an upright position.
3. Lower the hinge plate (2).
4. Slide the media guide (3) to the outer edge and rotate it to the down
position.
NOTE: If using fanfold media, skip Steps 5 and 6. Install fanfold media as
shown in Figure 3–5.
Basic Operations 3–5
Figure 3–3. Media Access
Metal Hub:
5. Place the 3” media core adapters on
6. Place the media supply roll on the
Plastic Hub:
NOTE: Printers have been built with two types of standard media hubs.
From the illustrations below follow the media loading that matches
your printer.
the media hub assembly (if using media
with 3” media cores).
media hub assembly. Slide the media
retainer against the supply roll and
tighten the thumb screw.
5. Place the 3” media supply roll on the
media hub assembly.
6. Place the media supply roll on the
media hub assembly. Slide the media
retainer against the supply roll and
tighten the thumb screw.
Figure 3–4. Roll Media Installation
NOTE: Do not use media retainer if the media supply roll is wider than 4
inches (102 mm).
NOTE: The media supply hub shown in Figure 3–4 is the standard 3 inch
diameter hub. An optional media supply hub is also available which
accommodates media rolls with smaller inner diameters (see pages
1–10 and 5–2).
Basic Operations3–6
7. Route the media over the guide plate, between the media sensor, and
over the platen roller (located beneath the printhead) as shown in
Figure 3–5.
8. Rotate the media guide up and slide it to the edge of the media.
9. Close the hinge plate and lower the printhead by the rotating the
printhead latch clockwise to the latched position.
NOTE: If the media is not being sensed properly, try adjusting the media
edge sensor by turning the media edge sensor adjustment knob.
Basic Operations 3–7
Figure 3–5. Fanfold Media Installation
Ribbon Installation and Removal
To use a ribbon, the printer must first be equipped with the factory installed
thermal transfer option. Follow the instructions below when installing the
thermal transfer ribbon.
Ribbon Installation
1. Open the side access over.
2. Rotate the printhead latch counter-clockwise to unlatch and raise the
printhead.
3. Lower the hinge plate.
4. Place the new ribbon roll (ribbon supply roll) on the supply hub, making
sure the ribbon roll is pushed up against the hub flange.
5. Route the ribbon as shown in Figure 3–6 to the take-up hub.
6. While holding the ribbon take-up hub, rotate the J-hook clockwise to
unlatch it.
7. Raise the J-hook upward and place the end of the ribbon over the
take-up hub.
Figure 3–6. Ribbon Installation
Basic Operations3–8
8. Slide the J-hook back into place as shown in Figure 3–7. While holding
the ribbon take-up hub, rotate the J-hook counter-clockwise to latch.
9. Turn the take-up hub until all the ribbon slack is removed.
10. Raise the hinge plate and close the printhead by rotating the printhead
latch clockwise.
Ribbon Removal
1. Cut the ribbon anywhere between the take-up hub and printhead.
2. Rotate the printhead latch counter-clockwise to raise the printhead, then
lower the hinge plate.
3. While holding the ribbon take-up hub, rotate the J-hook clockwise to
unlatch it, then slide off the used ribbon.
4. Turn the ribbon supply hub clockwise to draw the unused portion of the
ribbon back onto the supply roll.
Figure 3–7. Ribbon Take-up Hub and J-Hook
5. Raise the hinge plate and close the printhead by rotating the printhead
latch clockwise.
Basic Operations 3–9
Basic Operations3–10
4
Maintenance and Adjustments
Chapter Contents
Introduction 4–2.
Cleaning 4–2
General Cleaning 4–2.
Cutter and Tear Bar 4–2.
Printhead 4–3
Adjustments 4–4
Platen Adjustment 4–4.
Media Width Adjustment 4–5.
Printhead Alignment Adjustment 4–6.
Printhead Lift Adjustment 4–7.
Ribbon Setup Adjustment 4–7.
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Label Tracking 4–7.
Electrical Adjustments 4–8.
Printhead Voltage Adjustment 4–8.
Media Sensor Voltages 4–9.
Maintenance and Adjustments 4–1
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Introduction
The printer requires very little maintenance. Periodically the printhead will
require cleaning, and the interior and exterior of the printer should be cleaned
as needed to prevent dust and dirt build-up. There is no requirement for
lubrication, and no need for any disassembly to perform the cleaning.
The mechanical adjustments should be performed only if there are print
quality or ribbon wrinkling problems. The ribbon setup is performed if ribbon
wrinkling and pull marks occur. The platen adjustment is used to correct print
quality problems such as uneven print shades.
These adjustments should be performed only by qualified trained
service personnel.
Cleaning
WARNING
General Cleaning
A periodic cleaning should be performed on all rollers, guides and
assemblies. Low pressure air can be used to remove dust in the printer.
Isopropyl alcohol and a cotton swab can be used to clean any heavily soiled
areas. General cleaning will ensure that all parts are free of residue and will
not contribute to any printer malfunctions.
The media path and printhead should be cleaned each time a new roll of
media is installed in the printer.
Cutter and Tear Bar
Turn printer OFF and unplug AC power cord before cleaning the cutter
or tear bar.
Cutter blades and the tear bar can become gummed up from media backing
residue. These areas should be cleaned with Isopropyl alcohol when this
residue becomes noticeable.
WARNING
Maintenance and Adjustments4–2
Printhead
The thermal printhead can become dirty from normal printer operation and keeping
the printhead clean will help insure trouble free operation. If print defects, such as
streaks or spots, do appear on print jobs, the printhead may need cleaning. To clean
the printhead, refer to Figure 4–1 and perform the following steps.
Turn the printer OFF before cleaning the printhead.
1. Open the side access cover.
2. Unlatch the printhead by rotating the printhead latch counter-clockwise.
3. Remove the ribbon if installed (see page 3–9).
4. Lower the hinge plate.
The printhead surface may be hot! Allow it to cool for 2 to 3 minutes
before cleaning. Do not touch the printhead with your fingers or
lubricant of any kind.
WARNING
WARNING
5. Using a cotton swab dipped in 70% Isopropyl alcohol, clean the printhead by
rubbing the cotton swab left and right along the printhead elements.
6. Raise the hinge plate and engage the printhead latch by rotating it clockwise.
7. Close the side access cover.
Maintenance and Adjustments 4–3
Figure 4–1. Cleaning the Printhead
Adjustments
The mechanical and electrical adjustments which may be performed on the
printer, if needed, are listed below.
Platen Adjustment
Follow the instruction below to adjust the platen perpendicular to the
centerplate (refer to Figure 4–2).
1. Turn off the printer, and open the printer access cover.
2. Unlatch and raise the printhead.
3. Rest the thick part of the square on the platen and the other edge on the
NOTE: If the square is parallel with the centerplate do not perform this adjustment.
4. Loosen the three (3) screws securing the lower bearing pate.
centerplate.
5. Raise the bearing plate until the square is parallel with the centerplate
and tighten the screws.
Figure 4–2. Platen Perpendicular to Centerplate Adjustment
Maintenance and Adjustments4–4
Media Width Adjustment
This adjustment allows the use of narrower media (less than 4 inches wide) in the
printer.
1. Remove media from the printer paper path, if installed.
2. Adjust the green head level adjust knob until its lowest setting is at the
top (position #1).
3. Adjust the button head screw (located above the green knob) until the
screw lightly touches the green head level adjust knob, when the head is
latched down (see page 4–7).
4. Ensure that there is a small gap between the button screw and the
green head level adjust knob.
5. If media to be used is less than 4 inches wide perform the following steps:
a. Rotate head level adjust knob counter-clockwise for the minimum
printhead position.
b. Install the media to be printed (refer to page 3–5).
c. Print a batch of test labels.
NOTE: The method used to print test labels will vary depending upon the
printer emulation. For specific instructions, see the
corresponding to the emulation installed.
d. If print quality is not acceptable, repeat Steps (a) and (c) until the
print quality is acceptable.
Setup Guide
Maintenance and Adjustments 4–5
Figure 4–3. Media Width Adjustment
Printhead Alignment Adjustment
NOTE: Printhead pressure must be released in order to make static
adjustments.
1. Verify that the printhead floats evenly.
2. Print a batch of test labels.
NOTE: The method used to print test labels will vary depending upon the
printer emulation. For specific instructions, see the
corresponding to the emulation installed.
3. Observe print quality. Bar code contrast must be even.
4. To obtain even print quality, loosen the printhead (alignment) retainer screws.
5. Turn the printhead alignment screws counter clockwise to move the
printhead forward. or clockwise to move the printhead backward.
6. Repeat Step 5 until the print quality is acceptable.
Setup Guide
7. If the print quality is still not acceptable, check the media tracking.
Figure 4–4. Printhead Pressure Adjustment
NOTE: To minimize trailing jagged edges, always start with the printhead as
far forward as possible (maintaining visible print patterns) and then
move the printhead backward until the print is just dark enough.
Maintenance and Adjustments4–6
Printhead Lift Adjustment
1. Set green head level adjust knob to lowest position.
2. Insert a 0.5 inch wide strip of plastic 0.001 inch thick strip on each end
of the platen.
3. Adjust the set screw until each strip releases with equal pull when the
printhead latch closed. This procedure sets the printhead lift for proper
operation with full width, standard thickness (0.007 inch) media.
Ribbon Setup Adjustment
1. Verify that the ribbon take-up is square to the centerplate. Adjust rear
bearing plate and/or standoff if necessary.
2. The ribbon deflector on the head mount plate should start off square.
Adjust to maintain equal tension (side to side) on the supply side to the
head.
3. The ribbon deflector in front of the head should be parallel to the head
and not contact the tear bar.
4. The ribbon roller behind the upper extrusion should roll freely.
5. Print a test pattern allowing the ribbon to feed out with the paper
that no ribbon bubbling or wrinkling is evident, indicative of a concave
head.
6. Adjust head mount deflector for minimum pull marks in ribbon.
Label Tracking
The media should track with little help from the width guide. Check for
squareness of the media roller (on the “cantilever bracket” extrusion, see
page 9–8, item 21). The outer end of this roller is controlled by the
adjustment of the hinge.
. V
erify
Maintenance and Adjustments 4–7
Electrical Adjustments
The following adjustments should be performed only by qualified personnel.
These adjustments should be performed after Printer Controller PCBA or
power supply replacement as described on pages 7–7 and 7–8, respectively.
Printhead Voltage Adjustment
NOTE: You will need a voltmeter to set the printhead voltage.
1. Turn off the printer and remove the AC power cord.
2. Remove the printer cover (see page 7–3).
3. Attach the AC power cord to the printer and turn on the AC power
switch.
4. Print a batch of test labels. When the printer begins printing, press the
ON LINE/P
AUSE button on the printer.
NOTE: The method used to print test labels will vary depending upon the
printer emulation. For specific instructions, see the
corresponding to the emulation installed.
5. Raise the printhead and read the printhead resistance value located on
the right side of the label on the bottom of the printhead.
NOTE: This value is printed on the label as a three digit number, followed
by the ohms symbol, e.g. 752Ω. Check Table 4–1 for the correct
voltage settings.
6. Lower the printhead and lock in place by rotating the lever clockwise to
its vertical position.
7. Place the black (–) voltmeter probe on ground or clamp to the frame.
8. Connect the red (+) voltmeter probe to J12 pin 8 (located on the Printer
Controller PCBA).
9. Press the ON LINE/PAUSE button on the printer to resume printing.
Setup Guide
Maintenance and Adjustments4–8
10. Adjust R1 on the switch regulator assembly (power supply) until the
voltmeter reading matches the printhead resistance ranges in Table 4–1.
Table 4–1. Printhead Voltage Settings
Printhead Resistance Voltage Setting
628 – 700Ω
701 – 730Ω
731 – 770Ω
771 – 810Ω
811 – 850Ω
11. Re-install printer cover (see page 7–4).
Media Sensor Voltages
1. Turn off the printer and remove the AC power cord.
2. Connect the printer to your host computer via the communication port.
20.7 Volts
21.2 Volts
21.7 Volts
22.2 Volts
22.7 Volts
3. Remove the printer cover (see page 7–3).
4. Attach the AC power cord to the printer and turn on the AC power
switch.
5. Using the Secondary Operator’s Panel, enable the printer transmissive
gap sensor.
NOTE: The method used to select the gap sensor will vary depending upon
the printer emulation. For specific instructions, see the
corresponding to the emulation installed.
6. Install a 4.5 inch ribbon, if equipped for thermal transfer.
7. Install a roll of media into printer.
8. Peel off one label and insert the media backing into the media sensor.
9. Place the black (–) voltmeter probe on ground or clamp to the frame.
10. Place the red (+) voltmeter probe on TP10 on the Printer Controller
PCBA.
Setup Guide
11. Adjust R3 on the Printer Controller PCBA until the voltmeter reads 0.225
VDC (range 0.180 – 0.300 VDC).
Maintenance and Adjustments 4–9
12. Using the Secondary Operator’s Panel, enable the printer reflective gap
sensor.
13. Place the red (+) voltmeter probe on TP10 on the Printer Controller
PCBA.
14. Adjust R2 on the Printer Controller PCBA until the voltmeter reads 0.750
VDC (range 0.700–0.800 VDC).
15. Re-install printer cover (see page 7–4).
Maintenance and Adjustments4–10
5
Chapter Contents
Options
Introduction 5–2.
Factory Installed Only 5–2.
Field or Factory Installed 5–2.
Field Installed Only 5–2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Options 5–1
Introduction
A number of optional features may be added to the printer to extend its
capabilities. Instructions for the installation and maintenance of all options
(except those which are factory installed only) are included with their
respective options.
Factory Installed Only
1.
Internal Rewind
rolls.
– Winds printed labels or label backing into convenient
Ribbon Saver
2.
– Extends the life of ribbons in thermal transfer printing.
Field or Factory Installed
1.
Expanded Internal DRAM Memory
Adjustable Media Supply Hub
2.
inch inner diameter.
Label Present Sensor
3.
position.
Parallel Host Interface
4.
interface.
Twinax/Coax Host Interface
5.
or mainframe computers.
Field Installed Only
– Permits printing of long labels.
– Permits use of media rolls of less than 3
– Detects presence of a label at the label removal
– Provides a Centronics-compatible parallel host
– Allows printer to interface with mid-range
1.
Media Cutter
External Memory
2.
additional fonts, graphics, forms, etc.
– Automatically cuts label stock to pre–set lengths.
– Non-volatile memory cartridges for storage of
Options5–2
6
Troubleshooting
Chapter Contents
Overview 6–2.
Printing Pre-programmed Labels 6–2.
LP+, IGP/PGL, IGP/VGL Labels 6–2.
IGP/FGL Labels 6–2.
Power On Self-Test 6–3.
Error Messages 6–3.
Preparing for Troubleshooting 6–3.
Initial Steps 6–4.
Using the Troubleshooting Charts 6–4.
Problem Isolation Checklist 6–5.
Troubleshooting Procedures 6–6.
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6–1Troubleshooting
Overview
This chapter discusses a number of topics related to troubleshooting the
printer. It covers the generation and use of the pre-programmed configuration
and print quality test labels, the printer power on self test, error messages
and their causes, and some techniques for isolating and correcting faults .
When faults are isolated to the Printer Controller or Secondary Operator’s
Panel PCBAs, it is recommended that the entire PCBA be replaced as it is
not generally feasible to provide component level service to these boards in
the field. Insertion and removal instructions are provided only for socketed
components (e.g., DRAM, EPROM, etc.) and for jumper settings.
NOTE: There are different procedures for printing pre-programmed labels
depending upon the particular emulation installed in the printer.
Printing Pre-programmed Labels
The printer is pre-programmed to produce both configuration and print quality
test labels. The configuration label is used to quickly determine the exact
configuration of the printer. The print quality test label is designed to aid in
checking and adjusting the printhead and ribbon.
In general it is good practice to print a configuration label as a first step to
any maintenance or troubleshooting procedure, providing that the unit is
functional enough to do so. The information contained on the label should be
compared to the desired setup to confirm that the configuration is correct. A
copy of this label should be kept with the printer for comparison to possible
subsequent configurations, and to ensure that the current configuration is
correct.
LP+, IGP/PGL, IGP/VGL Labels
Printing configuration and print quality test labels is performed by selecting
the appropriate menu sequences from the Secondary Operator’s Panel as
described in Chapter 3 of the
a Configuration and Diagnostic Menu Options, respectively).
IGP/FGL Labels
Printing configuration and print quality test labels is performed by selecting
the appropriate menu sequences from the Secondary Operator’s Panel as
described in Chapter 5 of the
LP+, IGP/PGL, IGP/VGL Setup Guide
IGP/FGL Setup Guide.
(Printing
6–2 Troubleshooting
Power On Self-Test
The printer performs a self diagnostic test each time it is powered up. If any
faults are detected at that time, an error message will be displayed on the
LCD.
Should problems arise with printing or print quality, the printer is equipped
with a set of internal diagnostic tests which may be used to aid in isolating
problem areas. Use the six key pad on the Secondary Operator’s Panel to
access the Advanced/Diagnostic levels of the built-in menu system.
Access to this level is controlled by the setting of DIP Switch S3–1 on the
Printer Controller PCBA (see page 2–2) or additionally, when using the LP+,
IGP/PGL or IGP/VGL emulations, by simultaneous depression of the SHIFT
and ⇓ keys on the Secondary Operator’s Panel when in the OFF LINE mode.
The built-in diagnostic function provides tests for the proper operation of the
printer as well as the capability to print configuration labels (reports printer
set-up parameters) and test labels (checks for possible print defects).
Error Messages
The printer performs a Power On Self Test (POST) every time power is
turned on. The POST tests the condition of sensors and performs a RAM test
and ROM checksum test. If errors are detected, an error message is sent to
the LCD. ROM and RAM tests are performed only during the POST.
Sensor errors will generate error messages any time they occur. Should a
sensor error condition persist after an alarm clear, the LCD will continue to
display the error message until the condition is corrected.
Preparing for Troubleshooting
The printer is designed to provide easy access to most components. Should
the printer malfunction and require service, the following procedures should
be used to isolate and correct the malfunction.
6–3Troubleshooting
Initial Steps
ALWAYS unplug the unit before attempting to replace any components.
Always be sure that the printer has been placed on a level, stable surface.
Before attempting any service, confirm that the printer power cord is plugged into
a known good outlet with the correct voltage, and the unit has been installed in
an area which is within acceptable environmental conditions (see page 1–9). A
visual inspection of the printer should also be performed and any excessive
accumulation of dirt or dust should be removed (see page 4–2).
Confirm that the printer has been correctly loaded with the proper media and
ribbon (see page 3–4).
Set the printer power switch to OFF and unplug it from its power source. If
power is needed for a procedure it will be stated in that procedure.
WARNING
WARNING
When working with the power supply section of the printer
extreme caution.
Read the procedure completely before attempting any troubleshooting on the
printer. Gather all tools necessary to complete the procedure before beginning.
Using the Troubleshooting Charts
NOTE: NOTE: In some cases there are different procedures depending
upon the particular emulation installed in the printer. Procedures
unique to LP+, IGP/PGL and IGP/VGL are designated by an “(a)”
while those unique to IGP/FGL are designated by a “(b)”.
After performing the initial checks and confirming that conditions are correct,
follow the steps in the Problem Isolation Checklist chart appropriate to the
emulation is installed in the printer. These checklists are designed to direct
the service person to the appropriate Troubleshooting Procedure.
Always begin with Step 1, follow the instruction listed under Check Item, and
answer the question, YES or NO, under Result. The Corrective Action will
direct the service person either to another step or to one of the
Troubleshooting Procedures.
always use
In the appropriate Troubleshooting Procedure chart, again always begin with
Step 1, follow the instruction listed under Check Item, and answer the
question, YES or NO, under Result. The Corrective Action will direct the
service person either to another step or to a suggested repair.
6–4 Troubleshooting
Problem Isolation Checklist
Step Check Item Result Corrective Action
1. Check the printer voltage selection switch for the proper setting corresponding to the available AC input voltage (see page
2–3). Is the voltage selection switch set properly?
2. Connect the printer to the AC input voltage and turn the printer
ON. Are all three indicator lights on the Operator Panel lit?
3. Is the POWER light ON. YES Go to Step 4.
4. Press the FEED button. Does the printer RIBBON/MEDIA light
come on?
5. Print a print quality test label (see page 6–2). Is label print
quality acceptable?
6. Download a label format to the printer. Did the printer produce
the label?
YES Go to Step 2.
NO Correct the switch setting.
YES
NO Go to Step 3.
NO Go to Procedure 1.
YES Go to Procedure 2.
NO Go to Step 5.
YES Reset the printer. Go to Step
NO Go to Procedure 5.
YES Test complete.
NO Go to Procedure 6.
Printer failed initialization,
replace Printer Controller
PCBA (see page 7–7).
6.
6–5Troubleshooting
Troubleshooting Procedures
Troubleshooting Procedure 1. – NO POWER Light When Printer is Turned On
Step Check Item Result Corrective Action
1. Is power cord properly attached to the printer and to the AC
receptacle?
YES Go to Step 2.
NO Connect AC cord
properly.
2. Press the FEED button. Does any mechanical movement
occur?
3. Unplug printer. Remove the voltage selection switch/fuse holder (see page 2–3). Check fuse. Is the voltage selection correct
and the fuse good?
4. Remove cover (see page 7–3). Locate the in-line fuse behind
the Printer Controller PCBA (see Figure 7–9). Is the fuse
good?
5. Remove all accessories connected to the printer (e.g., memory
cartridge, cutter, etc.). Plug the printer in and turn it ON. Is the
POWER light illuminated?
6. Unplug printer. Check the ribbon cables from Connector J2 on
the Printer Controller to Connector J1 on the Front Panel
PCBA. Is the cable properly connected and undamaged?
7. Unplug printer. Unplug printhead cable from J6 on the Printer
Controller PCBA. Plug in the printer and turn it ON. Is the
POWER light illuminated?
YES Go to Step 5.
NO Go to Step 3.
YES Go to Step 4.
NO Replace fuse and/or
configure for the correct
voltage setting.
YES Go to Step 5.
NO Replace fuse.
YES Eliminate defective accessory
and replace.
NO Go to Step 6.
YES Go to Step 7.
NO Properly connect cable and/
or replace if necessary.
YES 1) Replace printhead.
2) Replace printhead ribbon
cable.
8. Unplug printer. Unplug motor assembly cable from J6 on the
Power Supply PCBA. Plug in the printer and turn it ON. Is the
POWER light come illuminated?
9. Unplug printer. Unplug the cable from J5 on the Power Supply
PCBA.
WARNING: This procedure requires measurement of
voltage. Do not cross test leads or allow
leads to touch other objects.
Plug in the printer and turn it ON. Check for approximately 8
VAC between pins 1 and 2 and approximately 10 VAC between pins 4 and 5 on the J5 connector. Are the approximate
voltages present?
6–6 Troubleshooting
NO Go to Step 8.
YES Replace drive motor assy.
(see page 7–17).
NO Go to Step 9.
YES Go to Step 11.
NO Go to Step 10.
Step Check Item Result Corrective Action
10. Locate the AC filter module assembly.
WARNING: This procedure requires measurement of
voltage. Do not cross test leads or allow
leads to touch other objects.
Back probe the module’s output connections and verify the
correct output for the selected printer line voltage.
If the AC input is 115 VAC, the AC voltage between chassis
ground and Pins 1 and 2 should be approximately 115 VAC.
If the AC input is 230 VAC, the AC voltage between chassis
ground and Pins 2 and 3 should be approximately 63 VAC and
125 VAC from chassis ground to pins 1 and 4.
Are the proper voltages present?
11. Unplug printer. Reconnect J5 on Power Supply PCBA. Disconnect J17 on the Printer Controller PCBA. Plug printer in and
turn ON. Check for approximately+5 VDC between J17 pin 5
to chassis ground. Is this voltage present?
12. Unplug printer. Reconnect J17 on the Printer Controller PCBA.
Disconnect J2 on the Front Panel PCBA. Plug printer in and
turn it ON.
WARNING: This procedure requires measurement of
voltage. Do not cross test leads or allow
leads to touch other objects.
Check for approximately +5 VDC between J17 pin 5 to chassis
ground. Is this voltage present?
13. Unplug printer. Disconnect the two orange wires from the
bridge rectifier.
YES Replace the transformer.
NO Replace AC filter module.
YES Go to Step 12.
NO Go to Step 13.
YES Replace Front Panel PCBA.
NO Replace Printer Controller
PCBA.
YES Go to Step 14.
WARNING: This procedure requires measurement of
voltage. Do not cross test leads or allow
leads to touch other objects.
Plug in the printer and turn it ON. Check for approximately 45
VAC between the two wires. Is the voltage present?
14. Unplug printer. Reconnect the two orange wires. Disconnect
the red (J7) and black (J4) wires from the Power Supply
PCBA. Plug in the printer and turn it ON.
WARNING: This procedure requires measurement of voltage.
Do not cross test leads or allow leads to touch
other objects.
Check for approximately 24 VDC between the red and black
wires. Is this voltage present?
NO Replace power transformer.
YES Replace the Power Supply
PCBA (see page 7–8).
NO Replace the rectifier.
6–7Troubleshooting
Troubleshooting Procedure 2. – RIBBON/MEDIA Light Is On
Step Check Item Result Corrective Action
1. Ensure that the media and ribbon are loaded correctly. (see
page 3–4). Press the FEED button. Does the RIBBON/MEDIA
light come on?
2. Press the FEED button. Does the media feed forward? YES Go to Step 3.
3. Press the FEED button again. Does the printer stop the media
at each label?
4. Press the FEED button again.
Does the printer feed more than one label?
5. Is the printhead latched in its down and locked position? YES Go to Step 6.
6. Press the FEED button. Does the motor operate normally? YES Go to Step 7.
YES If you are using a ribbon,
remove it at this time. Be sure
that the printer is set for direct
thermal operation. Go to Step
2.
NO Refer back to the Problem
Isolation Checklist and
continue.
NO Go to Step 5
YES Reinstall the ribbon and set
printer for thermal transfer
operation. Go to Procedure 4.
NO Go to Step 4.
YES Go to Procedure 3.
NO Adjust media sensor (see
page 4–9).
NO Rotate the printhead latch to
its down and locked position.
7. Ensure tear bar is properly installed and its teeth are facing
out. Is the tear bar correctly installed.
8. Remove the cover. Inspect all belts and pulleys. Ensure that all
belts are intact, correctly installed, and are not slipping. Are all
the belts and pulleys O.K.?
NO 1) Ensure motor cable is
plugged in J6 on the Power
Supply PCBA.
2) Ensure cable from J18 on
the Printer Controller PCBA is
plugged into J2 on the Power
Supply PCBA.
3) Replace Power Supply
PCBA.
4) Replace Printer Controller
PCBA.
5) Replace drive motor
assembly and cable.
YES Go to Step 8.
NO Remove tear bar and
correctly install it.
YES Go to Step 9.
NO Replace and reinstall any belt
or pulley that is defective.
6–8 Troubleshooting
Step Check Item Result Corrective Action
9. Examine the drive roller while pressing the FEED button. Does
the roller turn in the correct direction?
10. Examine the drive roller. Does it turn enough to feed the media
outward?
Troubleshooting Procedure 3. – Media Sensor Faults
Step Check Item Result Corrective Action
1. Check the media sensor for obstructions. Labels, dirt and
powder residue from label stock can sometimes block the
sensor lens. Is the media sensor clean?
YES Go to Step 10.
NO Replace the Printer Controller
PCBA.
YES This problem can be caused
by a worn roller or misaligned
parts within the printhead
assembly.
NO 1) Replace the Power Supply
PCBA.
2) Replace the Printer
Controller PCBA.
YES Go to Step 2.
2. Unplug the printer and remove the cover. Locate the Operator
Panel PCBA connector. Inspect associated cables for proper
connection and damage. Are both cables O.K.?
3. Unplug the media sensor cable from J7 on the Printer
Controller PCBA. Turn the printer ON and check the voltages
between chassis ground and pins 1, 3 and 5 on J7 of the
Printer Controller PCBA. This voltage should be +5 VDC. The
voltage on pins 4 and 6 should be less than one volt, and
should be zero volts on pin 2. Are all voltages correct?
4. Turn printer OFF and re-connect all unplugged connectors.
Turn printer ON and place label stock, with two labels removed
to expose the label backing, between the sensor brackets. The
voltage between ground and TP1 on the Printer Controller
PCBA should be greater than 2.1 VDC with the label under the
sensor and less than 0.5 VDC with the backing under the
sensor. Are both of these measurements correct?
NO Remove any objects blocking
the sensor. It may be
necessary to remove the
media sensor from the
printer.
YES Go to Step 3.
NO Connect cables properly or
replace if damaged.
YES Go to Step 4.
NO Replace Printer Controller
PCBA.
YES Media sensors are OK. Go to
Procedure 4.
NO 1) Replace the sensor
assembly.
2) Replace the Operator
Panel PCBA.
6–9Troubleshooting
Troubleshooting Procedure 4. – Ribbon Sensor Faults (Media Sensor Good)
Step Check Item Result Corrective Action
1. Ensure that the media and ribbon are loaded correctly (see
page 3–4). Press the FEED button. Is the Paper/Ribbon LED
illuminated?
2. Unplug the printer, remove the covers, and inspect all ribbon
pulleys and belts. Is the plug from the ribbon sensor connected
to J11 on the Printer Controller PCBA? Are all belts, pulleys
and connections OK?
3. Disconnect the sensor from J11 on the Printer Controller
PCBA. Measure the voltage on J11, pins 1 and 5 with respect
to chassis ground. Does the voltage measure +5 VDC? Is the
voltage OK?
4. Re-connect the sensor cable to J11. Attach the COM terminal
of the voltmeter to chassis ground and the other terminal to
TP3 on the Printer Controller PCBA. Slowly rotate the ribbon
supply hub manually. The voltage should rise to 1.1 VDC and
drop to less than 0.1 VDC as the hub is rotated. Are the
voltage levels correct?
YES Go to Step 2.
NO Refer to the Problem Isolation
Checklist and continue.
YES Go to Step 3.
NO Replace or repair parts and
make connections as
necessary.
YES Go to Step 4.
NO Replace the Printer Controller
PCBA.
YES Refer to the Problem Isolation
Checklist.
NO 1) Check sensor label on
ribbon supply hub.
2) Ensure sensor is not
shorted to the chassis.
3) Replace sensor.
6–10 Troubleshooting
Troubleshooting Procedure 5. – Poor Print Quality
Step Check Item Result Corrective Action
1. Print a configuration label (see page 6–2). Is anything printed
on the label?
2. Does the label show streaks or missing dots? YES 1) Clean printhead
3. Ensure the printhead is locked down, and print several labels.
Does the print fade across the width of the label?
4. Open the printer stock door. Assure the printhead cable is
properly connected to the printhead and not damaged. If the
cable is properly seated, remove the printer covers and insure
that the cable connected to J6 on the Printer Controller PCBA
and the cable connected between J12 on the Printer Controller
PCBA and the Power Supply PCBA are properly seated. Are
the cables properly seated and not damaged?
YES Go to Step 2.
NO Go to Step 4.
2) Check media width
adjustment (see page 4–5).
3) Possible bad printhead.
Replace (see page 7–6).
NO Go to Step 3.
YES Perform the printhead
alignment adjustment (see
page 4–6).
NO Go to Step 4.
YES Refer to the Problem Isolation
Checklist.
NO 1) Re-seat cables or replace
as necessary.
2) Replace printhead.
3) Replace Power Supply
PCBA.
4) Replace Printer Controller
PCBA.
6–11Troubleshooting
Troubleshooting Procedure 6. – No Serial Communications
Step Check Item Result Corrective Action
1. Ensure that the proper serial communications cable is
connected between the printer and the host. Turn the printer
ON and send a label to the printer
2. Compare the desired label format with the format produced. Is
the label format correct?
3. Print a configuration label (see page 6–2). Check the label for
the printer’s current communications parameters. Do these
parameters match those of the host device?
4. Send a label to the printer with the printer in the hex dump
mode. Setting the printer to the hex dump mode is
accomplished by:
(a) Selecting the hex dump mode from the Secondary
Operator Panel (see the
, Chapter 3).
Guide
(b) Sending a label to the printer after printing an IGP/FGL
configuration label (without turning printer OFF)
Was hex data printed on the label?
LP+, IGP/PGL, IGP/VGL Setup
. Did the label print?
YES Go to Step 2.
NO Go to Step 3.
YES Test complete.
NO Check label programming.
YES Go to Step 4.
NO Properly configure the printer
(see page 3–3).
YES Check the host configuration
and label format.
NO Incorrectly configured or
defective serial
communications cable.
6–12 Troubleshooting
7
Removal and Replacement
Chapter Contents
Overview 7–2.
Cover 7–3
Printhead 7–6
Printer Controller PCBA (Main Logic Board) 7–7.
Power Supply (Switch Regulator Assembly) 7–8.
Lower Timing Belt (203 DPI) 7–11.
Lower Timing Belt (300 DPI) 7–13.
Upper Timing Belt 7–15.
Drive Motor Assembly 7–17.
Platen 7–19
DRAM 7–22
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EPROMs 7–24
NVRAM 7–26
Removal and Replacement 7–1
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Overview
Many parts of the printer, such as the printhead and timing belts, may require
replacement when performing routine maintenance. Some parts may require
replacement because of damage or wear. This section will explain how to
remove and replace these parts.
It is recommended that the service person have the following tools available
before proceeding with the Removal and Replacement procedures.
• Phillips Screwdriver #1
• Phillips Screwdriver #2
• Needle Nose Pliers (Small)
•
•
•
•
•
•
•
•
•
•
Allen W
Allen W
Allen W
Allen W
Allen W
Allen W
Allen W
Allen W
Allen W
Allen W
rench 1.5 mm
rench 2.0 mm
rench 2.5 mm
rench 3.0 mm
rench 4.0 mm
rench 1/16 inch
rench 5/64 inch
rench 3/32 inch (needed for Ribbon Saver option only)
rench 3/16 inch
rench .050 inch (needed for Ribbon Saver option only)
Removal and Replacement7–2
Cover
Removal
1. Turn the printer power switch OFF and unplug the AC power cord from
the AC outlet.
2. Raise the side access cover to a full upright position.
3. Loosen the three screws securing the top edge of the cover and remove
the screw securing the rear of the cover.
4. Loosen the three screws in the bottom left edge of the cover, then lift off
the entire cover.
Removal and Replacement 7–3
Figure 7–1
Replacement
Proper re-installation of the printer cover is essential to ensure that the
printer continues to meet its specified regulatory requirements. To re-install
the cover, perform the following steps (numbers in the drawings refer to their
associated steps).
1. Place the cover over the unit as shown, aligning the front of the
electronic cover with the plastic front panel section (see Figure 7–2).
Figure 7–2
2. Tighten screw snugly and close cover.
3. Align cover to plastic bezel by adjusting screw (see Figure 7–3, Item 2)
until cover closes with no obstruction.
Figure 7–3
Removal and Replacement7–4
4. Once the media side of the cover is aligned, horizontally align the
electronic cover with the plastic front bezel.
5. Tighten screw snugly.
6. Place hand on the top of the electronic cover pressing firmly, and tighten
the remaining three outside screws (two on the left side and one at the
rear of the printer).
Figure 7–4
7. Open media cover and tighten the remaining two internal cover screws.
Removal and Replacement 7–5
Printhead
Removal
1. Turn off the printer and open the side access cover.
2. Rotate the printhead latch downward to unlatch the printhead, then raise
the printhead to an upright position and lower the hinge plate.
3. Loosen the thumb screw and lower the printhead from the printhead
mounting plate.
4. Using a flat blade screw driver, push against the printhead connector’s
guide to free the connector from its socket, then remove the printhead.
Replacement
1. Push the new printhead into the connector first. Align the printhead with
the alignment pins (located on the bottom of the printhead mounting
plate), and secure with the thumb screw.
2. The printhead must be cleaned if touched by any fingers or oils (see
page 4–3).
3. Lower the printhead, raise the hinge plate, and rotate the printhead latch
up to latch closed.
4. After installation of new printhead, the printhead voltage adjustment
must be performed (see page 4–8).
Figure 7–5
Removal and Replacement7–6
Printer Controller PCBA (Main Logic Board)
Removal
1. Turn off the printer and remove the AC power cord.
2. Remove the printer cover (see page 7–3).
3. Unplug cable connectors P17 and P18 from J17 and J18 on the Printer
Controller PCBA.
4. Disconnect all remaining cables from the Printer Controller PCBA.
5. Remove the rear female/male hex standoffs from the serial port connector.
6. Remove the seven (7) Phillips head screws used to secure the Printer
Controller PCBA.
7. Remove the Printer Controller PCBA from the printer.
Replacement
1. Reverse previous procedures to install new Printer Controller.
2. Adjust the media sensor voltages (see page 4–9).
3. Re-install printer cover (see page 7–4).
Removal and Replacement 7–7
Figure 7–6
Power Supply (Switch Regulator Assembly)
Removal
1. Turn off the printer and remove the AC power cord.
2. Remove the printer cover (see page 7–3).
3. Remove the two (2) 4–40 Phillips head screws located on the
centerplate. Depending on the style of the printer’s media hub, the
media hub assembly may need to be removed to access these screws.
Identify your model using the illustrations in Figure 7–7 and follow the
directions for that model.
4. Rotate the media hub assembly to expose each
of three screws used to secure the media hub to
the centerplate. Remove the media hub and
switching regulator screws.
4. Rotate the media hub so the switching regulator
screws are exposed. Remove the switching regulator
screws.
4. Rotate the media hub assembly to expose each of
three screws used to secure the media hub to the
centerplate. Remove the media hub and switching
regulator screws.
Figure 7–7
Removal and Replacement7–8
5. Remove the two flat-head screws from the AC filter module.
6. Disconnect the four wires from the rear of the AC filter module and
remove the ground wire from the base plate.
7. Remove the AC filter module from the printer.
8. Disconnect connectors P3, P5, P6, P1, and P2 from the switching
regulator assembly.
9. Disconnect P17 and P18 from the Main Logic Board and remove both
cable connectors.
10. Disconnect J4 (Black) and J7 (Red) cable connectors from the switching
regulator assembly.
11. Remove the bottom three pan-head Phillips screws used to secure the
switching regulator assembly to the base plate.
12. Remove the Phillips-head screw located in the upper left corner of the
switching regulator assembly. Remove the switching regulator assembly
from the printer.
Removal and Replacement 7–9
Figure 7–8
Replacement
1. Reverse previous steps to install the new switching regulator assembly.
2. Refer to Figure 7–9 below when reconnecting the AC filter module
3. Re-install printer cover (see page 7–4).
4. After installation of the new switching regulator assembly, the printhead
assembly.
voltage adjustment must be performed (see page 4–8).
Figure 7–9
Removal and Replacement7–10
Lower Timing Belt (203 DPI)
Removal
1. Turn off the printer and remove the AC power cord.
2. Remove the printer cover (see page 7–3).
3. Loosen the upper tensioner adjustment screw located on the rear
bearing plate.
4. Carefully slide the upper timing belt off the 36 tooth pulley as shown in
Figure 7–10.
Removal and Replacement 7–11
Figure 7–10
5. Loosen the lower tensioner adjustment screw (see Figure 7–11).
6. Carefully remove the lower timing belt from the printer.
(1)
Figure 7–11
(1) Lower timing belt is 171-tooth (no ribbon saver option) or 212-tooth (ribbon saver option installed)
Replacement
1. Reverse previous procedures to replace the lower timing belt, making sure that
the belt is routed properly for your printer’s configuration (see Figure 7–12).
(a) (b)
Figure 7–12
2. Re-adjust both upper and lower tensioners to remove timing belt slack.
3. Re-install printer cover (see page 7–4).
Removal and Replacement7–12
Lower Timing Belt (300 DPI)
Removal
1. Turn off the printer and remove the AC power cord.
2. Remove the printer covers (see page 7–3).
3. Loosen the upper tensioner adjustment screw located on the rear
bearing plate (see Figure 7–13).
4. Carefully slide the upper timing belt off the 36 tooth pulley.
Removal and Replacement 7–13
Figure 7–13
5. Loosen the lower tensioner adjustment screw (see Figure 7–14).
6. Carefully remove the lower timing belt from the printer.
(1)
Figure 7–14
(1) Lower timing belt is 175-tooth (no ribbon saver option) or 215-tooth (ribbon saver option installed)
Replacement
1. Reverse previous procedures to replace the lower timing belt, making
sure that the belt is routed properly for your printer’s configuration (see
Figure 7–12). Note that the additional belt idler pulley used with 300 dpi
printers (see Figure 7–14) is not shown in Figure 7–12.
2. Re-adjust both the upper and lower tensioners to remove timing belt
slack.
3. Re-install printer cover (see page 7–4).
Removal and Replacement7–14
Upper Timing Belt
NOTE: The upper timing belt and rear bearing plate are used only on
printers equipped with the thermal transfer option.
Removal
1. Turn off the printer and remove the AC power cord.
2. Remove the printer cover (see page 7–3).
3. Loosen the upper tensioner adjustment screw located on the rear
bearing plate (see Figure 7–15).
4. Remove the cable clamp from the rear bearing plate.
NOTE: Do not remove the rear bearing plate. Alignment and tracking
problems could result from the screws being loosened.
5. Carefully remove the upper timing belt by slipping around the rear
bearing plate (see Figure 7–16).
Removal and Replacement 7–15
Figure 7–15
Replacement
1. Reverse previous procedures to replace the upper timing belt.
2. Re-adjust the upper tensioner to remove all remaining timing belt slack.
3. Replace previously removed cable clamp.
4. Re-install printer cover (see page 7–4).
5. Install media and print a configuration label.
Figure 7–16
Removal and Replacement7–16
Drive Motor Assembly
Removal
1. Turn off the printer and remove the AC power cord, media, and ribbon if
installed.
2. Remove the printer cover (see page 7–3).
3. Remove the lower timing belt (see page 7–11).
4. Raise the printhead and lower the lower right front panel.
5. Loosen the set screw in the media sensor knob and remove the media
sensor knob and spacer.
6. Remove the four (4) 6–32 X .38 black screws and external tooth
washers used to secure the lower assembly bearing plate.
7. Remove the lower assembly bearing plate.
Removal and Replacement 7–17
Figure 7–17
8. Disconnect P6 from J6 on the switch regulator assembly (power supply).
9. Cut all cable ties securing the drive motor assembly connector cable to the printer.
10. Using a Phillips screw driver, remove the four screws securing the drive
motor assembly.
11. Carefully remove the drive motor assembly from the printer.
Replacement
1. Reverse previous procedures to replace.
2. Re-adjust the lower tensioner after the timing belt has been re-installed.
3. Install AC power cord and turn printer on.
4. Print a configuration test label to verify the printer is working correctly.
5. Re-install printer cover (see page 7–4).
NOTE: It may necessary to perform the platen adjustment after the
installation is complete (see page 4–4).
Figure 7–18
Removal and Replacement7–18
Platen
Removal
1. Turn off the printer and remove the AC power cord, media, and ribbon if
installed.
2. Remove the printer cover (see page 7–3).
3. Remove the lower timing belt (see page 7–11).
4. Remove the three (3) 6–32 X .38 Phillips screws securing the control
panel assembly.
5. Raise the printhead and lower the lower right front panel.
6. Remove the control panel assembly and disconnect the front panel
cable assembly.
7. Using an Allen wrench inserted in the set screw access slots shown
above, loosen the set screws in both the 36 tooth and 51 tooth pulleys
attached to the platen shaft.
Removal and Replacement 7–19
Figure 7–19
8. Carefully slide both the 36 tooth and 51 tooth pulleys off the platen shaft
(see Figure 7–20).
Figure 7–20
9. Loosen the media sensor knob set screw and remove the media sensor
knob and spacer (see Figure 7–21).
Removal and Replacement7–20
10. Remove the four (4) 6–32 X .38 black screws and external tooth
washers used to secure the lower assembly bearing plate.
11. Remove the lower assembly bearing plate.
Figure 7–21
Replacement
1. Reverse previous procedures to replace.
2. Re-adjust the lower tensioner after the timing belt has been re-installed.
3. Install AC power cord and turn printer on.
4. Print a configuration test label to verify the printer is working correctly.
5. Re-install printer cover (see page 7–3).
Removal and Replacement 7–21
DRAM
DRAM SIMMs may need to be replaced if (1) they are found to be defective
during troubleshooting or (2) a particular application requires printing of a
longer label than is possible using the standard DRAM capacity (see page
1–10). The standard DRAM memory size is 1 MByte, which may be
expanded to a maximum of 17 MBytes.
WARNING
Before removing cover, turn power off, and unplug printer from supply
voltage.
Removal
1. Remove the printer cover (see page 7–3).
2. Locate connector J1 (see Figure 7–24).
3. Align the SIMM module’s contacts with the connector, as shown in
Figure 7–22. The notch in the SIMM module does not allow it to fit into
the socket unless it is in the correct orientation.
4. Push forward on the module until the plastic hooks on the socket
engage with the holes on the module, and snap it into place.
Figure 7–22
The printer is configured to the amount of memory expansion by setting jumpers on
the Printer Controller PCBA. Figure 7–23 shows the permissible jumper locations.
No
Module
4 MB Module 16 MB Module
Figure 7–23
To expand to 5 MBytes – Move jumper to E20–21
To expand to 17 MBytes – Move jumper to E22–23
Removal and Replacement7–22
Figure 7–24
Replacement
1. Re-install printer cover (see page 7–4).
Removal and Replacement 7–23
EPROMs
Removal
EPROM memory consists of four 4 Mbit (512K x 8 bit) chips which together
form a 2 MByte array, arranged as 512K x 32 bits. EPROM memory may
need to be replaced if (1) it is found to be defective during the
troubleshooting procedure or (2) it is desired to install a different printer
emulation.
WARNING
Before removing the cover, turn power off, and unplug printer from
supply voltage.
1. Remove the printer cover (see page 7–3).
2. The EPROMs are located in sockets U17 to U20 on the Printer
Controller PCBA (see Figure 7–24). Carefully insert a chip removal tool
under the EPROMs, as shown in Figure 7–25. A gentle rocking motion
will raise the chips without damage to the contact pins.
Set the EPROMs aside in or on anti-static material if you wish to keep
them (for example, when changing the printer emulation).
Figure 7–25
Removal and Replacement7–24
3. Align the new EPROM chip’s pins with the socket, taking care to orient
the notch in the chip with the notch in the socket.
4. Press the chip down until fully seated, taking care not to bend any of the
contact pins (see Figure 7–26).
5. Insert all remaining EPROMs.
Replacement
1. Re-install printer cover (see page 7–4).
Figure 7–26
Removal and Replacement 7–25
NVRAM
The 128 KByte non-volatile (NV)RAM is located on the Printer Controller
PCBA in socket U8.
When replacing the NVRAM, follow the procedure for printer cover removal
and re-installation as detailed on page 7–3.
The chip’s contact pins should be carefully aligned with the socket, being
sure to match the notch in the chip with the notch in the socket. Use gentle
pressure to insert the chip, being very careful not to bend or damage the
contact pins. There is no change in jumper settings when installing the
NVRAM.
Battery backup power for the NVRAM is provided by a Lithium Battery.
WARNING
LITHIUM BATTERY. There is a danger of explosion if the battery is
incorrectly replaced. Replace only with the same or equivalent type
battery recommended by the manufacturer. Discard used batteries
according to the manufacturer’s instructions. Be sure plug in only in
the proper orientation.
ATTENCION
Il y a danger d’explosion s’il y a remplacement incorrect de la batterie.
Remplacer uniquement avec une batterie du meme type recommande
par le constructeur. Mettre au rebut les batteries usagees conforment
aux instructions du fabricant.
Removal and Replacement7–26
8
Chapter Contents
Circuit Description
Introduction 8–2.
Printer Controller PCBA 8–2.
Microprocessor and Related Circuits 8–2.
Connector Function Summary 8–14.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 8–1
Introduction
This section describes the operation of the Printer Controller PCBA which is
responsible for host data processing, forms motion control, monitoring of
various sensors and image processing.
Printer Controller PCBA
In the design of the printer, the majority of the electronic functions are
combined on a single circuit board (the Printer Controller PCBA), utilizing the
i960JA type microprocessor.
The microprocessor is responsible for overseeing the data flow throughout
the system; for processing and formatting print data; for managing the print
cycle in which print data is sent to the printhead and the Printhead elements
activated; and for monitoring the sensors for alarm conditions.
This section provides an overview of the hardware functions located on the
Printer Controller PCBA.
Microprocessor and Related Circuits
The main devices and functions located on the Printer Controller PCBA are
listed below:
1. 80960JA Microprocessor and Microchip PIC16C55 Microcontroller
2. Address Latches
3. 1 MByte of DRAM (expandable on board with a 4 or 16 MByte memory
option board, providing a total of 5 MBytes or 17 MBytes of DRAM)
4. DRAM Address Multiplexer
5. 2 MBytes of EPROM
6. 128 KByte of NVRAM
7. Memory cartridge interface
8. ST16C1451CJ UART
9. FIFO and SRAM
10. Ribbon Sensor
11. Operator Panel Controls
12. Paper Edge Sensor
13. Label Present Sensor
14. Options outputs (paper cutter, ribbon saver, parallel host interface and
label present sensor)
15. Switch inputs
16. Real time clock
17. Start of print adjustment
18. Stepping motor control lines
19. Thermal printhead control circuits
20. RS232 driver and receiver
21. RS422 driver and receiver
22. Analog to digital converter
23. Programmable switches and jumpers
Circuit Description8–2
Each of the functions listed above are described in detail in the paragraphs
that follow.
80960JA Microprocessor and Microchip PIC16C55 Microcontroller
The 80960JA Microprocessor (U47) is used to format label data prior to
sending the data to the thermal printhead control circuits. The 80960JA
calculates the proper strobe times used for each print cycle, based on
printhead temperature, printhead voltage, etc.
The 80960JA has 32 address lines. The address lines are also used to
transmit and receive data. The 80960JA utilizes a variable bus width
architecture for its data lines. The EPROM memory and DRAM utilize a 32-bit
bus. All other peripherals utilize a 16-bit or 8-bit bus. The 80960JA internal
data bus and storage registers are 32 bits wide.
The 80960JA input clock is derived from the 50 MHz oscillator, U53. This 50
MHz clock signal is divided by 2 by the programmable logic device U54
providing a 25 MHz clock on pin 5 of U54. This signal (CLK1) connects to pin
H14 of the 80960JA. The CLK1 signal sets the fundamental time base for
both the 80960JA core and external bus. Basic timing for the 80960JA bus
operations is 40 ns per bus state.
The 80960JA has an interrupt controller and two counters built-in. The
interrupt controller has eight external interrupts, of which four are used.
These are all active low and their functions are as follows:
interrupt 0 from PIC16C55
interrupt 1 from UART
interrupt 2 from the expansion PCBA connector (optional)
interrupt 3 from 8 Msec clock. This is the main operating system interrupt.
The PIC16C55 is an 8-bit microcontroller with its own internal EPROM
program memory. Its program memory is organized 2k x 12. Its external data
bus is 8 bits wide but its internal instruction bus is twelve bits wide. Only 33
instructions exist which are simple and ”RISC like”.
The PIC16C55 input clock is derived from the 32 MHz oscillator, U55. This 32
MHz clock signal is divided by 2 by the programmable logic device U54
providing a 16 MHz clock on pin 45 of U54. This signal (CLK16) connects to
pin 27 of the PIC16C55. The CLK16 signal sets the time base for both the
PIC16C55 and the Printhead Control FPGA (U50).
The i960 microprocessor and PIC16C55 (PIC) perform a multitude of
functions. The majority of these functions are listed and described in more
detail than previously discussed.
1. The i960 controls the phase lines and enable lines going to the stepping
motor controller circuit.
Circuit Description 8–3
2. The i960 controls the +24 volts going to the thermal printhead. When
software detects a lack of printhead activity, the +24 volts going to the
printhead is switched off. Turning the printhead voltage off when not in
use, enhances printhead reliability.
3. The i960 controls the external UART used to send/receive serial data
to/from the host computer. It also controls the serial communication
signal DTR and detects the status of CTS.
Figure 8–1. i960JA Controller Block Diagram
4. The PIC provides timing and control for the thermal printhead control
circuits including the strobe and latch signals.
5. The i960 controls the 8-channel A/D converter used to read inputs listed
on page 8–13.
6. The i960 reads the status of the front panel switches and also controls
the front panel indicator LEDs.
7. The i960 reads in the status of the dip switch located on the controller
board (S3).
Circuit Description8–4
8. The i960 communicates with the Real Time Clock (U38).
9. The i960 sends the printhead strobe data to the PIC16C55 via the 512 X
9 FIFO. The PIC communicates with the i960 via an interrupt signal,
INT1N, and other signals conditioned by the FPGA, U50.
Power-on reset for the two FPGAs (U50 and U54) is generated by Q1 and
buffered by U33 (in on pin 1, out on pin 2) and U39 (in on pin 6, out on pin 4).
FPGA U54 receives the power-on reset signal, –RESET, as does the
80960JA (pin E12). The PIC has its own built-in power-on reset.
Address Latches
The four 8 bit latches (U40, U41, U42 and U43) are used to latch the 32
address bits during each Ta interval (Ta => address interval). The address
data is latched on the trailing edge of ALE (U47–G3). Latching the address
bits is necessary so that the address bits can be used to transmit and
received data during the Td intervals (Td => intervals).
DRAM
1 MByte of DRAM memory is provided by U9 and U10, implemented by 4
Mbit DRAMs, each arranged as 256K by 16 bits with dual column address
strobe (CAS) control.
DRAM Address Multiplexer
The DRAM address multiplexer is made up of the quad 2-line to 1-line
converter chips (U6, U11, and U24). When the –COL signal is low, the row
addresses are presented to the DRAM address inputs. The row addresses
are latched into the DRAM chip on the negative going edge of the –RAS
signal. When the –COL signal is high then the column addresses are
presented to the DRAM address inputs. The column addresses are latched
into the DRAM chip on the negative going edge of –CAS.
EPROM
The 2 MBytes of EPROM is composed of chips U17, U18, U19, and U20.
Each chip has eight data bits. All four chips are used in conjunction to
provide the 32 bits required by the CPU’s external data bus. The EPROMs
are 4 Mbit memory devices. Each is arranged as a 512 Kbit by 8-bit memory.
The EPROM chips provide the program instructions that are fetched by the
CPU and loaded into its internal instruction cache. They also provide font
data to the CPU.
Circuit Description 8–5
Programmable Logic Device
The Programmable Logic Device (U54) performs a multitude of functions
related to memory and I/O control. The majority of these functions are listed
below:
1. Provides refresh to the DRAM chips by generating a CAS before RAS
once every 15 microseconds (approximately).
2. Serves as a wait state generator that can generate wait states and
stretched control signals for each bus read/write cycle. The wait states
generated are listed below.
• DRAM, PIC16C55, FIFO and Operator Panel status One wait state.
• Memory cartridge connector (J19) and NVRAM (option) Three wait states.
. . . . . . . . . . . . . . .
. . . . . . . . . . . .
• A–D converter (U29), clock/calendar (U38) and Op Panel display Seven wait states.
• All other read/write cycle Two wait states.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Generates the DRAM control signals (–COL, –WE0, –WE, –RAS0,
–RAS1, –RAS2, –CAS0L,
–CAS0H, –CAS1L, –CAS1H, –CAS2, –CAS3, –CAS4, –CAS5).
4. Generates the memory and I/O chip select signals (–EPSEL,
CARTDEN, –IOWR, –RCMD, NIDSEL, NMSEL, NDSEL, –RDFIFO,
–RDSEN, –RDFP
AN, –DISPDEN, –NVRCE, –R
TCSEL).
5. Generates one of the 80960 bus control signals (–RDY).
6. Provides a 25 MHz clock for the processor, a 16 MHz clock for print
control FPGA (U50) and the PIC16C55 (U48) microcontroller, an 8 MHz
clock for the UART (U45) and an 8 Msec clock for the 80960JA.
Memory Cartridge Interface
The interface to the memory cartridges is comprised of connector J19, and
data transceivers U3 and U5, address lines and control buffers U4 and U28.
The printer software has been written to automatically detect the presence of
a plug-in cartridge.
. . . .
NOTE: The cartridge can be plugged-in with AC power ON or OFF.
ST16C1451CJ UART
U45 is a device that converts serial data to parallel data or converts parallel
data to serial data. It is called a Universal Asynchronous Receiver
Transmitter (UART). It can convert serial data at speeds as fast as 19,200
bits per second.
Circuit Description8–6
Connection to the i960 is on the lower byte (bits 0 through 7) of the data bus.
Timing for the device is provided by an 8 MHz clock (U45–12) generated by
U54. An active high reset is connected to pin 24 and an interrupt signal
(U45–18) is inverted by U52 and connected to the 80960JA’s internal
interrupt controller. Several events are enabled by the program. One event
that can create an interrupt is the received character when assembled and
waiting to be read by the processor.
FIFO and SRAM
Print and strobe data are written to the FIFO by the 80960JA. The FPGA,
U50, takes the data and with the SRAM performs print dot control.
Ribbon Sensor (T3X04–21 Only)
The sensor circuitry consists of resistors R177 and R178 and connector J11.
Resistor R178 supplies current to the ribbon sensor emitter LED and resistor R177
provides a load for the ribbon sensor photo transistor (emitter follower mode).
When the ribbon mechanism in the printer is operating properly, pulses are
present on U37–2 whenever the transport motor is turning. If pulses are not
present when the transport motor is turning then it indicates that the thermal
transfer ribbon is broken or jammed.
NOTE: If the printer is in direct thermal mode, then software does not
monitor the ribbon sensor since the direct mode does not use a
thermal transfer ribbon.
Operator Panel Controls
The Operator Panel contains three key switches, three LEDs, an LCD and six
membrane-type switches. The i960 constantly polls the switch inputs to
determine their status. Resistor networks RN1 and RN2 are used to provide
pull-up resistors for these lines
The indicator LEDs for RIBBON/MEDIA and PAUSE are controlled by the
i960 by latch outputs U2–16 and U2–12 respectively. When the signals are
high the LED is ON and when the chip output is low the LED is OFF.
U23 is an octal transceiver that operates only in the transmit mode. It buffers
the data going to the LCD. Resistor network RN2 prevents the data lines
from floating when the data transceiver is disabled. Resistors R20 through
R27 and capacitors C37 through C44 are used to slow the edge rate of the
data transceiver in order to control EMI (electromagnetic emissions). U22 is
an octal buffer for the membrane switch inputs where resistor network RN1
provides resistor pull-ups for the switches. Capacitors C12 through C18 and
C36 are used for filtering and EMI control.
Circuit Description 8–7
Input octal buffer U21 provides buffering for one membrane switch and the
transfer switch. It also buffers signals not related to the front panel. Specifically,
the memory cartridge present signal uses the buffer. The rewind sensor circuitry
and the head home switch signal is presently not used. Enabling the input buffers
occurs when i960 address the front panel and a read operation is executed.
Addressing the front panel also enables the data transceiver. If the i960 executes
a write operation while addressing the front panel, the LCD enable signal (–E) will
go active low. LCD register selection (–RS) is controlled by the second least
significant burst address from the i960.
The signal function versus connector pin for the Operator Panel is indicated below:
Function Connector Pin
Signal ground J2–1,2
+5 volts J2–3
On Line/Pause LED J2–6
Ribbon/Media LED J2–7
On Line/Pause switch J2–8
Feed switch J2–9
Cancel switch J2–10
Membrane switches J2–12, 14, 16, 18, 20, 22
Eight data bits J2–11, 13, 15, 17, 19, 21, 23, 25
Enable for LCD J2–24
Register selection for LCD J2–26
Paper Edge Sensor
The paper edge sensor circuits consist of inverters U33–10, U33–8 and
U33–6, potentiometers R2 and R3 and transistor switch Q2.
The paper edge sensor has both a reflective type sensor and a transmissive
type sensor. The reflective sensor is only used when the label stock has a
special ”carbon black” indexing mark that can be detected by the reflective
sensor. Commands sent from the i960 will select either the reflective sensor
(U33–6 low and U33–8 high) or the transmissive sensor (U33–6 high and
U33–8 low). The reflective sensor and the transmissive sensor have
separate emitters but both sensors share a common detector (photo
transistor). In the transmissive mode the transmissive emitter (LED) is turned
ON and the reflective emitter (LED) if turned OFF. In the reflective mode the
reflective emitter (LED) is turned ON and the transmissive emitter is turned
OFF.
The potentiometer R2 controls the gain of the reflective sensor by controlling
the amount of current in the reflective emitter (LED). The potentiometer R3
controls the gain of the detector (photo transistor) by controlling the value of
the detector collector load resistor (common emitter configuration).
Circuit Description8–8
Transistor switch Q2 is used to switch the gain of the emitter between HIGH gain and
LOW gain. When Q2 is turned on the resistor R147 is in parallel with potentiometer
R3. This represents the LOW gain mode. When Q2 is turned OFF, the resistor R107
is no longer in parallel with R2, this represents the HIGH gain mode. The HIGH gain
mode is used by the operating firmware to aid in distinguishing the difference
between the ”out of stock condition” and the ”label backing only” condition. In the
LOW gain mode the voltage difference between ”out of stock” and ”backing only” is
small and therefore hard to detect reliably. By switching to HIGH gain the voltage
difference between ”out of stock” and ”backing only” is amplified and is therefore
easier to detect.
The paper edge sensor circuits can be summarized as follows:
• R132 sets the operating current for the transmissive LED.
• R117 and R2 set the operating current for the reflective LED.
• U33–8 LOW turns ON the transmissive LED.
• U33–6 LOW turns ON the reflective LED.
• R3 and R131 set the detector gain in the HIGH gain mode.
• R3, R131 and R147 set the gain in the LOW gain mode.
Label Present Sensor (Optional)
The label present sensor circuitry consists of the phase-lock loop circuit U31,
inverter U33–4, diodes D2 and D3, resistors R81, R97, R80 and R79 and
capacitors C81, C65 and C3.
The label present sensor is used to sense whether or not a peeled label that
has been presented to the operator has been taken or is still waiting to be
taken. The label present sensor uses an infrared LED and a photo transistor
in a reflective mode. As soon as the label has been taken, the printer is able
to print and present the next label.
The input signal on U33–3 is a square wave that is generated by the Schmitt
Trigger formed by U30–1 and 2, R78, R89, R90 and C69. The frequency of
the square wave is about 4.6 KHz.
The output of the inverter (U33–4) is used to modulate the label sensor
emitter (LED) at the same rate as the square wave. The square wave signal
also serves as the oscillator input to the phase lock loop circuit (U31–6).
Since the phase lock loop frequency is set by the square wave input, this
circuit functions as a narrow band-pass filter that is tuned to the frequency of
the square wave input. Extraneous light signals such as ambient light will be
rejected by the band-pass filter unless the frequency of the ambient light
matches the frequency of the square wave oscillator.
Circuit Description 8–9
The resistor R120 sets the operating current for the label present sensor emitter
(LED). The resistor R80 with R81 are the load resistors for the label present sensor
detector (photo transistor). Diodes D2 and D3 serve as voltage limiting diodes and
capacitors C65 and C81 serve as AC coupling capacitors.
Interfaces
1. Paper Cutter
The printer has provisions for an optional paper cutter that attaches to the
front of the unit. The paper cutter board connects to 8-pin connector, J8. A
cutter output signal, J8–3 is generated by the i960 via the latch U2–13 and
transistor switch Q3. A cutter input signal, J8–4, is available as data bit 10 at
data status buffer, U14. Unregulated +24 volts is provided to the optional
cutter board at J8–2 where motor control and connection to the cutter is
accomplished. The voltage output is fused with a fast blow 1.5A fuse (F4)
and is regulated down to 5V on the cutter board.
2. Ribbon Saver
Connection to the optional ribbon saver board is provided by the 8-position
connector, J9. Two inputs, J9–3 and 4, are available to the i960 as data bits
13 and 14 at data status buffer, U14. Two outputs, J9–1 and 2, are generated
by latches U2–18 and 19. These latches are activated by the i960 executing
a store operation to latch U2 using data bits 0 and 1. Unregulated fused +24
volts is available through F5 at J9–7 to the ribbon saver board where
appropriate control is accomplished.
3. General Purpose
A 7-pin circular DIN connector, J14 provides the following signals for external use.
• J14 – 1 Ground
• J14 – 2 Cutter out signal (same as J8–3)
• J14 – 3 Fused unregulated +24 volts (same as J9–7)
• J14 – 4 & 6 Input signals available as data bits 14 and 15 at data buffer U13.
• J14 – 5 Output signal from transistor switch Q4 and latch U46–13.
• J14 – 7 Fused and unregulated +9 volts.
Real Time Clock
The Real Time Clock (RTC) chip U1 is used for time keeping purposes as
well as non-volatile data storage. The RTC is a self-contained subsystem that
includes a lithium battery, quartz oscillator and support circuitry. The RTC has
64 RAM locations (bytes). Fourteen bytes are used for clock and control
registers and 50 bytes are available as general purpose RAM.
The signal coming out on U1–23 is a square wave with a frequency equal to
1024 Hz. This signal is divided by 8 inside U54. The signal exits U54–30 as
an 8 Msec clock going to the i8960JA (U47–B12).
Circuit Description8–10
Stepping Motor Control Lines
The transport stepping motor is controlled by 4 lines coming from an octal
latch (U46). The signals labeled PHA and PHB on J18 are used to control the
motor phases by controlling the two halves of a dual full wave bridge circuit
located on the switching regulator board. One full wave bridge controls the
current in winding A (phase A) and the other full wave bridge controls the
current in winding B (phase B). The other two signals ENABLE–A and
ENABLE–B are used to enable or disable the full wave bridge circuits. If
ENABLE–A is LOW
, bridge A is turned OFF. If ENABLE–A is HIGH, bridge A
is turned ON (i.e., enabled). If ENABLE–B is LOW, bridge B is turned OFF. If
ENABLE–B is HIGH, bridge B is turned ON.
In half step mode, the enable lines are used to alternate between one phase ON
and two phases ON. In full step mode there are always two phases turned ON
and the enable lines are always enabled when the motor is stepping.
Thermal Printhead Control Circuits
The Thermal Printhead (TPH) control circuits are listed below:
• U57 (512 by 9) FIFO
• U50 Dot History Field Programmable Gate Array
• U49 (8k by 8) SRAM
• U51 Quad nand gate
• U59 Quad Op amp
• U48 PIC16C55 microcontroller
The TPH control circuits operate in two different modes. The first mode is the
”Load RAM” mode. The second mode is the ”Load Printhead” mode. During
the ”Load RAM” mode the parallel data comprising one complete print
column is transferred from the FIFO (U57) to the RAM (U49).
During ”Load Printhead” mode, data is transferred from the RAM (U49) to the
printhead via the FPGA (U50). The data going to the printhead comes out of the
FPGA on four serial lines. In addition to converting The data from the RAM into
serial format (four serial output lines), the FPGA also modifies the RAM data
according to a predefined heat control algorithm. The heat control algorithm is
responsible for deciding if a dot is going to be printed or not printed during one of
the six heat cycles that make up one complete burn cycle.
NOTE: One complete burn cycle is performed for each dot column.
There are seven I/O signals connected to the PIC that are involved with
timing and control for the TPH. These signals are LATCH, ADDRRST,
CYCNT, LOADRAM, GBINT, BURNIRQN and –STB (U47–16).
Circuit Description 8–11
The ADDRRST signal is sent the FPGA (U50) from the PIC. This signal is
used to reset the FPGA RAM address counter prior to the beginning of the
next ”LOAD RAM” load cycle.
The LOADRAM signal is sent to the FPGA from the PIC. This signal is used
to tell the FPGA when a new ”LOAD RAM” cycle is about to begin.
The GBINT signal is sent from the FPGA to the PIC. This signal is generated
when the FPGA detects the 9th bit of the FIFO data is high which indicates
that the last byte of the column has been stored in the FIFO.
The BURNIRQ signal goes from the FPGA to the PIC. This signal is a
decode of the RAM address lines. This signal is used to inform the PIC when
a burn cycle has been completed.
Each dot row that is printed is made up of 6 heat cycles. The CYCNT signal
coming from the PIC and going to the FPGA is used to clock the 3-bit heat
cycle counter (located inside the FPGA) from one heat cycle to the next.
The LATCH signal is generated by the PIC. This signal is used to latch serial
printhead data into the printhead output latches. The –STB signal is
generated by the PIC. This signal is used to enable the printhead drivers.
Any driver that has a ”ONE” written to its corresponding latch flip-flop will
activate its thermal element. Any driver with a ”ZERO” written to its
corresponding latch flip-flop will de-activate its thermal element.
RS232 Drivers and Receivers
The RS232 drivers and receivers are all contained in one chip (U44). This
chip has two RS232 drivers and two RS232 receivers. This chip also
contains charge pump circuitry used to convert +5 volts to +10 volts and –10
volts (these voltages are required by the RS232 drivers).
The received data present on U44–12 is AND’ed with the RS422 output by
U25. When either the RS232 or RS422 receivers are not receiving serial
input data their respective outputs will be in the HIGH state
(U44–12 and U39–3).
Circuit Description8–12
RS422 Drivers and Receivers
The RS422 driver and receiver are contained in one chip (U39). This chip
contains two RS422 drivers (only 1 is used) and two RS422 receivers. Resistor
R118 is a line terminating resistor used to match the receiver input impedance to
the impedance of the transmission line. The resistors R91 and R119 are used to
force the output of the RS422 receiver HIGH when the RS422 input is not in use
(i.e., not connected). The unused RS422 receiver circuit receives its input from
the low-power reset (Q1). The resistors R134 and R135 are used to bias U39–6
to +2.5 volts. When U39–7 goes above +2.5 volts then U39–5 will go LOW. When
U39–7 goes below +2.5 volts then U39–5 will go HIGH. When U39–2 is more
positive than U39–1 then U39–3 will go HIGH. When U39–2 is more negative
than U39–1 then U39–3 will go LOW.
When U39–5 is HIGH then U39–14 will be HIGH and U39–13 will be LOW.
When U39–15 is LOW then U39–14 will be LOW and U39–13 will be HIGH.
U39–4 is an enable input for the RS422 driver that can be controlled from the
UARTs (U45) RTS output.
Analog-to-Digital Converter
U29 is a single channel analog to digital converter with parallel access. It is
fed by an eight-channel analog multiplexer (U37). In addition to the
start-of-print adjustment available on channel U37–5 as previously
discussed, the remaining channels of U37 are used as listed.
Channel 0 – Printhead thermistor
•
Channel 1 – Paper edge detector
•
Channel 2 – Monitor +24 volts
•
Channel 3 – Reserved
•
Channel 4 – Spare
•
Channel 5 – Reserved
•
Channel 6 – Ribbon sensor
•
Channel 7 – Spare
•
Programmable Jumpers and Switches
The following is a list of the proper settings for jumpers on the Printer
Controller PCBA.
EPROM
2 MB Jumper on E2–E4 and E6–E7 (Factory setting)
DRAM 1 MB Jumper on E16–E17 (Factory setting)
5 MB Jumper on E20–E21
17 MB Jumper on E22–E23
32 MHz Oscillator Enabled Jumper on E45–E46 (Factory setting)
50 MHz Oscillator Enabled Jumper on E43–E44 (Factory setting)
Circuit Description 8–13
Connector Function Summary
J1 DRAM Socket. Provides connection for SIMM DRAM package. The factory installed
standard 1 MByte of DRAM may be expanded to a maximum of 17 MBytes.
J2 Operator Panel Interface Connector. Connects the Operator Panel PCBA to the
Controller PCBA
J4 Bi-directional Serial Port. Connects the Printer Controller PCBA to a host system
operating in either the serial RS–232 or RS–422 communication modes.
J5 Label Present Sensor Connector. Used when the peel and present option is installed.
J6 Printhead Connector. Provides connection for control and data signals to and from
the printhead. Also provides power supply voltages to the printhead.
J7 Media Sensor Connector. Connects the Printer Controller PCBA to the media
transmissive and reflective edge sensors.
J8 Cutter Interface Connector. Provides voltage and control signals to the optional
media cutter.
J9 Ribbon Saver Interface Connector. Provides control signals and voltages for the
optional ribbon saver.
J10 Reserved
J11 Ribbon Sensor Connector. Connects the Printer Controller PCBA to the ribbon
motion sensor.
J12 Printhead Power Connector. Provides low impedance supply voltages to the
printhead cable.
J13 I/O Expansion Port. Allows the addition of an optional Parallel or Twinax/Coax host
interface PCBA
J14 General Purpose I/O Connector. Provides four general purpose I/O bits and supply voltages.
J15 Reserved
J17 Power Supply Interface. Provides voltages and logic ground from the power supply.
J18 Power Supply Control Interface. Provides control signals to the power supply.
J19 Memory Cartridge Interface. Provides an interface for plugging in memory
cartridges. The interface will accept memory application cartridges (flash) or fixed
font cartridges (one-time-programmable EPROMs). Cartridges may be inserted or
removed with power on.
J20 Reserved
Circuit Description8–14
9
Spare Parts
Chapter Contents
Cover Assembly 9–2.
Operator Panel Assemblies 9–4.
Mechanism Assembly (1.5 Inch Media Supply Hub) (1 of 4) 9–6.
Mechanism Assembly (3.0 Inch Media Supply Hub) (2 of 4) 9–8.
Mechanism Assembly (3 of 4) 9–10.
Mechanism Assembly (4 of 4) 9–12.
Printhead Mount Assembly 9–14.
Linkage Assembly 9–16.
Bearing Plate Lower Assembly 9–18.
Media Sensor Assembly 9–20.
Thermal Transfer Mechanism (1 of 2) 9–22.
Thermal Transfer Mechanism (2 of 2) 9–24.
Rewind Option Assembly (1 of 2) 9–26.
Rewind Option Assembly (2 of 2) 9–28.
Final Assembly 9–30.
Label Guide Assembly 9–32.
Ribbon Saver Option (1 of 2) 9–34.
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Ribbon Saver Option (2 of 2) 9–36.
Head Lifter Assembly 9–38.
Media Hub Assembly (Standard) 9–40.
Adjustable Media Hub Assembly Option 9–42.
Present Sensor Option 9–44.
Cutter and Tray Options 9–46.
Spare Parts 9–1
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Cover Assembly
Spare Parts9–2
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