Internec 3400 schematic

Maintenance

Manual

3600 Bar Code Label Printer

P/N 062905-001

c 39 c39

frank

Intermec Corporation
6001 36th Avenue West
P.O. Box 4280
Everett, WA 98203-9280

U.S. technical and service support: 1-800-755-5505
U.S. media supplies ordering information: 1-800-227-9947

Canadian technical and service support: 1-800-688-7043
Canadian media supplies ordering information: 1-800-268-6936

Outside U.S. and Canada: Contact your local Intermec service supplier.

The information contained herein is proprietary and is provided solely for the purpose of allowing
customers to operate and/or service Intermec manufactured equipment and is not to be released,
reproduced, or used for any other purpose without written permission of Intermec.

Information and specifications in this manual are subject to change without notice.
 1995 by Intermec Corporation

All Rights Reserved

The word Intermec, the Intermec logo, Label Debut, and CrossBar are trademarks of Intermec
Corporation.

The name Centronics is wholly owned by GENICOM Corporation.
IBM is a registered trademark of International Business Machines Corporation.
Throughout this manual, trademarked names may be used. Rather than put a trademark ()

symbol in every occurrence of a trademarked name, we state that we are using the names only in an
editorial fashion, and to the benefit of the trademark owner, with no intention of infringement.

The software contained in the 3600 printer and the accompanying materials are copyrighted.
Unathorized copying of the software, including software that has been modified, merged, or
included with other software, or the written materials is expressly forbidden without the prior
written consent of Intermec. All right, title, and interest in all copies of this software are and shall at
all time remain the sole and exclusive property of Intermec. Customer may be held legally
responsible for any copyright infringement that is caused or encouraged by its failure to abide by
these terms.

hc nug nug c3c3

Contributors

Technical Writer: Robert Shaw

Editor: Craig Thompson

Technical Illustrator: George Wilson

Technical Reviewers: Cathy Aragon

Pixie Austin
Daniel Clark
John Cramer
Allen Crowe
Stephen Eckert
Pat Helton
Laura McCluer
Ed Millet
Art Millican
Matt Roberts
Joe Wade

iii

hc c39 c39

frank

Contents

Before You Begin xi

Safety Summary xi
Warnings and Cautions xii
Purpose of This Manual xii
Additional Information xv

General Information

hc

nug c39 frank

Contents

1

Overview of the 3600 Printer 1-3

3600 Features 1-4
3600 Printer Specifications 1-4

Dimensions (no options installed) 1-4
Electrical Requirements 1-4
Printing Methods 1-4
Printing Speed 1-5
Printhead Specifications 1-5
Media Specifications 1-5
Ribbon Specifications 1-5
Environment 1-5
Self-Strip Specifications 1-5
Communications 1-6
Fonts and Graphics 1-6
Character Sets 1-6
Memory 1-6
Factory Default Settings 1-7

3600 Printer Options 1-7

Memory Expansion 1-7
Twinax Interface 1-7
Coax Interface 1-8
Parallel Interface 1-8
Network Connectivity 1-8
Kanji/Katakana Character Support 1-8
Batch Takeup 1-8

v

3600 Printer Maintenance Manual

Principal Functional Parts 1-9

Basic Printer Setup and Operation 1-11

Front Panel Operation 1-11

Over-Temperature 1-11
Media or System Faults 1-12
Feed/Pause Pushbutton 1-12

Checking the Printer Configuration 1-12

DIP Switch Settings 1-13
Connecting the Printer to a Computer 1-13
Printing 1-14

Using Label Debut 1-14

Using Third-Party Software 1-14

Using the Printer Command Set 1-15

Preventive Maintenance

2

3

Preventive Maintenance Actions and Intervals 2-3

Inspecting the Printer 2-4

Cleaning the Printer 2-4

Removing the Media Cover 2-5
Cleaning the Printhead 2-6
Cleaning the Rollers and Tear Bar 2-8
Cleaning the Media Guides and Media Path 2-9
Cleaning the Label and Ribbon Sensors 2-11
Cleaning the Printer Covers 2-12

Testing and Adjusting

Testing the Printer 3-3

Running Test and Service Mode at the Printer 3-4

Setting DIP Switches 3-4

Printing Test Labels 3-7
Running Test and Service Mode From a Host Computer 3-11
Testing Printer and Host Communications 3-12

vi

hc

nug c39 frank

Adjusting the Printer 3-13

Adjusting the Print Bias for Print Quality 3-14
Adjusting the Print Intensity 3-15
Adjusting the Printhead Adjustment Lever for Print Quality 3-16
Adjusting the Label Mark Sensor 3-17
Adjusting the Label Gap Sensor 3-19
Adjusting the Label Taken Sensor 3-20

Aligning the Printer 3-21

Aligning the Rollers 3-22
Aligning the Printhead 3-23
Aligning the TTR Supply Hub 3-25

Troubleshooting

Contents

4

About Troubleshooting and Repair 4-3

Troubleshooting Tips 4-3
Where to Start 4-3
Repair 4-3

Troubleshooting Checklist 4-4

Error Handling 4-5

Syntax Errors 4-5
Parameter Errors 4-5
Image Overrun Errors 4-5
Invalid Numeric Character Errors 4-6
Insufficient Storage RAM Errors 4-6
Error Codes 4-6

Printer Operation Problems 4-9

Print Quality Problems 4-10

Communications Problems 4-12

Environmental Problems 4-13

Electrostatic Discharge (ESD) 4-13
Electromagnetic and Radio Frequency Interference 4-14

Ground Loops Between Equipment 4-14
Inadequate Earth Ground 4-14
AC Power Problems (Surges, Sags, Spikes, Noise, and Outages) 4-15

Miscellaneous Problems 4-16

vii

3600 Printer Maintenance Manual

Remove and Replace Procedures

5

Replacing Printer Components 5-3

Replacing the Lithium Battery 5-4

Replacing the Printhead 5-5

Replacing the Bezel PCB 5-6

Replacing the Main PCB 5-8

Replacing the Kanji/Katakana Option PCB 5-9

Replacing the Label Mark Sensor 5-10

Replacing the Label Taken Sensor 5-12

Replacing the Label Gap Sensor 5-13

Replacing the TTR Drive Roller and Gear/Pulley 5-15

Replacing the TTR Takeup Hub, Clutch/Pulley, and Belt 5-18

Replacing the TTR Supply Hub and Adjusting Plate 5-20

Replacing the Platen Roller and Gear 5-22

viii

Replacing the Liner Drive and Takeup Components 5-24

Replacing the Stepper Motor 5-30

Replacing the AC Plug/Input Filter 5-31

Replacing the Power Switch/Circuit Breaker 5-32

Replacing the Transformer 5-33

PCB Drawings and Schematics

6

Replacement Parts

7

Appendix

hc

nug c39 frank

Contents

A

Functional Description of the 3600 Mechanics A-3

Functional Description of the 3600 Electronics A-4

Power Supply A-4

+5V A-4
+40V A-4

+24V A-4
Power Fail Detection A-5
Battery A-5
Battery Life Calculations A-5
Reset A-5
Motor Driver A-6
Processor A-7

Chip Selects A-7

TPU A-7

QSM A-8

Interrupt Priority Levels A-8

Crystal A-8
Memory A-9

Static RAM A-9

EPROM A-9

DRAM A-9
Communications Interface A-10
A/D Converter A-10
DIP Switches A-10
ASIC and I/O Option Interface A-10

Address/Data Multiplexor A-10

Chip Select Generation A-11

I/O Option Connector A-11
FIFO A-11
Front Panel Interface A-11
Debug Interface A-11

Functional Description of the 3600 Software A-14

Band Buffering and Font Caching A-14

Image Band Buffering A-14

Image Band Example A-15

Font Caching A-18
Print Energy Compensation A-18

Digital Thermal Compensation A-18

Global Compensation A-18

ix

Before You Begin

This section describes the purpose and arrangement of this manual to you. It is
intended to bring to your attention, important general safety concerns, specific
warnings and cautions, and sources of additional information.

Safety Summary

Your safety is extremely important. Read and follow all of warnings and
cautions in this book before handling and operating Intermec equipment. You
can be seriously injured, and equipment and data can be damaged if you do
not follow the safety warnings and cautions.

Do Not Repair or Adjust Alone Do not repair or adjust energized equipment
alone under any circumstances. Someone capable of providing first aid must
always be present for your safety.

First Aid Always obtain first aid or medical attention immediately after an
injury. Never neglect an injury, no matter how slight it seems.

hc

nug c39 frank

Before You Begin

Resuscitation Begin resuscitation immediately if someone is injured and stops

breathing. Any delay could result in death or permanent injury. To work on or
near high voltage, you should be familiar with approved industrial first aid
methods.

Energized Equipment Never work on energized equipment unless you are
authorized by a responsible authority. Energized electrical equipment is
dangerous. Electrical shock from energized equipment can cause death. If you
must perform authorized emergency work on energized equipment, be sure
that you comply strictly with approved safety regulations.

xi

3600 Printer Maintenance Manual

g

Warnings and Cautions

The warnings and cautions in this manual use the following format and
address the issues described:

Warnin

A warning alerts you of an operating procedure, practice, condition,

WARNING

CAUTION

or statement that must be strictly observed to avoid death or
serious injury to the persons working on the equipment.

Caution

A caution alerts you to an operating procedure, practice, condition,
or statement that must be strictly observed to prevent equipment
damage or destruction, or corruption or loss of data.

Purpose of This Manual

The purpose of this maintenance manual is to provide the information you
need to clean, adjust, and repair the Intermec 3600 Bar Code Label Printer.

Who Should Read This Manual?

This manual is written for experienced electronic technicians trained by
Intermec, who will service and, if necessary, repair the 3600 printer. Detailed
operating instructions and specific related information is provided in the 3600

Bar Code Label Printer User’s Manual.

This document is not intended to support user operations or persons untrained
in troubleshooting and repair. You should have a working knowledge of
electronics with an advanced understanding of PCs, DOS, data
communications, and bar code applications. It is assumed that you are familiar
with the installation, programming, and operation of the Intermec 3600 Bar
Code Label Printer and all of its options, including a working knowledge of the
Label Debut (or Label) software tool.

xii

hc

nug c39 frank

Before You Begin

How This Manual Is Organized

You will find the following information in the referenced section:

For information about: Refer to:

A basic description of the 3600

Scheduled cleanings and checks

Making sure the printer is operating
correctly and providing quality results

Problem solving

Removing and replacing components

Chapter 1 - An illustrated overview of
the 3600 printer; listing printer
features, specifications, and options,
identifying primary parts, and
summarizing some setup and
operating information.

Chapter 2 - Actions, intervals, and
illustrated preventive maintenance
procedures.

Chapter 3 - Procedures for running
printer tests printing test labels,
printing out the configuration settings,
and for making printer adjustments
and alignments.

Chapter 4 - Information for
identifying, duplicating, isolating, and
eliminating conditions or failures in
the printer environment or the printer
components.

Chapter 5 - Instructions for the
removal and replacement of key
components.

Main PCB drawings and diagrams

Spare parts

Theory of operation

Chapter 6 - Engineering drawing and
schematic diagram of the main PCB.

Chapter 7 - Two lists of the spare
parts: one in ascending part number
sequence and one alphabetically by
description, keyed to exploded
illustrations of the printer. Part
numbers for tools and documentation
are also provided.

Appendix - functional descriptions of
the 3600 mechanics, electronics, and
firmware.

xiii

3600 Printer Maintenance Manual

Terms and Conventions

The following terms and conventions occur throughout this manual. A
complete glossary of terms is provided in the 3600 Bar Code Label Printer User’s

Manual.

Terms

• “Backing” (or liner) refers to the silicon release portion of the media that

carries the label.

• “Host” refers to any computer that the printer is connected to.

• “TTR” refers to the thermal transfer ribbon used when the printer is in

thermal transfer rather than direct transfer mode.

• “Media” is the stock on which the printer prints labels. Media can be made

of plain paper, polyester, thermally reactive paper, or other materials with
adhesive backing.

Conventions

The following conventions are used throughout this manual for operating
procedures and descriptions of the printer.

• Downloaded commands appear in the order that you enter them into the

printer with the following conventions:

Convention Description

< > Angle brackets < > enclose mnemonic representations of

ASCII control characters. For example, <ETX> represents
the ASCII “End of Text” control character.

{ } Braces {} enclose variable data. For example, {n} signifies a

variable for which you can designate a constant value.

[ ] Brackets around a word or letter represent a key on your

keypad. For example, [Tab] represents the Tab key and [M]
represents the letter M key.

[ ]-[ ] When two keys are joined with a dash, press them

simultaneously. For example, if you see the command
[Ctrl]-[C], press the two keys at the same time.

E3;F3 Enter all characters not enclosed in brackets by pressing an

individual keypad key. For example, E3;F3; is entered as
[E][3][;][F][3][;] with the E and the F in uppercase.

xiv

hc

nug c39 frank

Before You Begin

Additional Information

The following documents may be of interest or help to you in servicing the
3600 printer.

3600 Bar Code Label Printer User’s Manual (P/N 062732)
Label Debut User’s Manual (P/N 062982)
Data Communications Reference Manual (P/N 044737)
The Bar Code Book by Roger C. Palmer

xv

c39 c 39

frank

1

General Information

c39 c 39

frank

This chapter identifies basic features, options, and technical specifications of the
3600 printer. It names principal functional parts and reviews basic printer setup and
operation.

Overview of the 3600 Printer

The Intermec 3600 is a microprocessor-based thermal printer that prints
standard bar code or 2D symbology, human-readable characters, graphics,
lines, and borders on 3-inch (7.62 cm) to 6.6-inch (16.8 cm) wide continuous
feed label stock.

The 3600 prints directly to thermal label media or can print on regular label
media with the use of a thermal transfer ribbon (TTR).

c39 frank

General Information

1

Power

Alert

Empty/Pause

Feed/Pause

Intermec

3600

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

I

O

3600M.001

The 3600 supports applications that need a wider print capability than the
Intermec 3400 Bar Code Label Printer can provide.

1-3

3600 Printer Maintenance Manual

c39 c 39

frank

3600 Features

The 3600 printer’s features are summarized in the following list:

• Print speed from 2 to 5 ips

• Programmable, nonvolatile printer configuration

• Bitmap font capabilities

• Outline/vector font support

• User selectable gap feature for fonts

• 2D symbology support (Code One, PDF 417, and Maxicode)

• 128k (standard), 512k (optional) storage memory

• Autoselection of Intermec protocols

• Printable control characters

• Image banding and memory management

• Dot-by-dot digital thermal compensation

• Self-strip or continuous print (with internal rewind)

• Media sensitivity numbering system

• Wide range of label media

TM

• Label Debut

label design software

3600 Printer Specifications

The specifications and performance parameters for the 3600 printer are
itemized in this section.

Dimensions (no options installed)

Height 11 inches (27.9 cm)
Width 12 inches (30.5 cm)
Length 17 inches (43.2 cm)
Weight 45 pounds (20.3 kg)

Electrical Requirements

Input Voltage 100, 115, or 230 VAC ± 10%
Frequency 47 to 63 Hz

1-4

Printing Methods

Direct Thermal
Thermal Transfer (thermal transfer ribbon (TTR) required)

c39 frank

General Information

Printing Speed

Maximum 5 ips (50.8 mm per second)
Minimum 2 ips (127 mm per second)
The print speed can be changed in 1 ips increments only: 2, 3, 4, or 5.

Printhead Specifications

Element size 0.00492 inch square (0.13 mm)
Width 6.6 inches maximum print (168 mm)
Resolution 203 dots per inch (8 dots per mm)
# of Elements 1344 per printhead
X dimensions 10 mil to 50 mil or 0.25 mm to 1.27 mm,

5 mil (0.13 mm) in drag mode with specified media

Media Specifications

Roll 6,000 linear inches (152 m)

1

Length 0.5 inch (13 mm) to 17 inches (432 mm) (stripped media)
Width 3.0 inch (76 mm) to 6.7 inches (170 mm)
Thickness 0.012 inches (0.3 mm) maximum
Diameter 8.38 inch maximum diameter (213 mm)

Ribbon Specifications

Roll 6,000 linear inches (152 m)
Widths 3.0 inches (76 mm)

4.1 inches (104 mm)

5.4 inches (137 mm)

6.7 inches (170 mm)

Diameter 2.25 inches maximum (57 mm)

Environment

Operating 50°F to 104°F (10°C to 40°C)
Humidity 10% to 90% noncondensing

Self-Strip Specifications

The liner takeup hub can spool the backing of an entire 6,000-inch roll of
media.

Peel Release 10 to 50 grams

1-5

3600 Printer Maintenance Manual

c39 c 39

frank

Communications

Asynchronous RS-232C, RS-422, RS-485 interfaces
Serial ASCII code
Hardware (Ready/Busy) flow control
XON/XOFF protocol
Intermec Standard Block protocol
Polling Mode D protocol
Multi-Drop protocol
Baud Rates: 1200, 2400, 4800, 9600, 19200

Fonts and Graphics

5x7, 7x9, 7x11, and 10x14 86XX compatible fonts
2 bitmap OCR fonts
3 bitmap fonts measured in point sizes 8, 12, and 20
1 outline font
12 monospaced bitmap fonts
Kanji/Katakana bitmap font card (option)
Kanji/Katakana bitmap and outline font card (option)
UDF size of 4 inches (101.6 mm) maximum
UDC size of 4 inches (101.6 mm) maximum

Character Sets

US ASCII Norwegian/Danish
UK ASCII Swedish/Finnish
German Italian
French Spanish
Swiss

Memory

Base 512K of DRAM for imaging

128K of SRAM for storage

1-6

Optional 512K of SRAM for storage

c39 frank

General Information

Factory Default Settings

The following is a list of the factory default settings for the 3600 printer:

Configuration Default Setting

Preamble Character Disabled
Postamble Character Disabled
Auto-Transmit 1 Disabled
Auto-Transmit 2 Disabled
Auto-Transmit 3 Disabled
Message Delay 0 ms
Power-Up Mode Advanced mode
End-of-Print Skip Distance 100 dots
Top of Form 20 dots
Media Sensitivity 420

1

Number of Image Bands 3
Maximum Label Length 1000 dots
Printer Character Set US ASCII
Label Retract Enabled
Print Speed 3 ips
Label Stock Type Die-cut
Intercharacter Delay 0 ms

3600 Printer Options

The 3600 you are servicing can be equipped with one or more of the following
options:

Memory Expansion

Storage memory for formats, pages, graphics, and fonts can be increased to
512K of battery backed static RAM. This option provides an additional 512K of
nonvolatile bulk storage to hold more formats, fonts, or bitmap graphics. It also
increases the printer’s image buffering capabilities.

Twinax Interface

Allows connection of the 3600 printer to IBM Twinax systems. The printer
emulates an IBM 5256 Model 1 printer and can operate with an IBM System
34/36/38 or AS/400 host computer.

1-7

3600 Printer Maintenance Manual

c39 c 39

frank

Coax Interface

Allows connection of the 3600 printer to IBM coax systems. The 3600 emulates
an IBM 3287 printer by connecting the printer to IBM 3270 Type A coax cable
computer systems operating in the VTAM (CICS/IMS/TSO) or 8100 (DPPX)
environments. Connection can be made to an IBM 3174/76/99 system
controller/multiplexer.

Parallel Interface

This option lets the user connect the 3600 to a PC through any Centronics™
parallel interface in addition to the standard serial interface.

Network Connectivity

Using the Parallel Interface option and an Ethernet or other network adapter,
the 3600 can be connected to a network.

Kanji/Katakana Character Support

The 3600 has two Kanji/Katakana options: bitmap fonts only, or outline and
bitmap fonts. Users shipping finished materials or work in process materials to
Japan can meet Japanese label requirements for Kanji/Katakana (JIS
Interleaved 2 of 5).

Batch Takeup

A larger diameter liner takeup hub permits printed labels to be spooled for
later use without causing as much label curl as the smaller diameter hub. The
maximum takeup outside diameter is 5 inches.

1-8

Principal Functional Parts

The following illustrations identify the common name and location of the major
functional elements of the 3600 printer.

Front Panel

Power

Alert

Empty/Pause

Feed/Pause

Intermec

3600

c39 frank

General Information

Media
window

Media
cover

1

Media access
door

Darkness adjust
control

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

I

O

AC power cord
receptacle

Fanfold media
access slot

DIP switches

Optional I/O
board port

Serial
communications port

Power on/off
switch

3600M.002

1-9

3600 Printer Maintenance Manual

c39 c 39

frank

TTR takeup hub

TTR roller

Tear bar

TTR supply hub

Power

Alert

Empty/Pause

Feed/Pause

IntermecIntermec

3600

Media post

Platen
roller

TTR/ribbon

Media
access door

Self-strip/
liner roller

Self-strip/
liner roller

Thermal
printhead

Liner takeup
hub

Tear
bar

Edge
guide

Upper media
guide

Lower media
guide

Media roll

Media
roll retainer

Media
post

Lower media
guide

Printhead lift
lever

3600M.003

1-10

Basic Printer Setup and Operation

Detailed operating instructions for the 3600 printer are contained in the user’s
manual. This section summarizes the following basic setup and operating
information for you as a quick reference:

• Front panel operations

• Checking printer configuration

• Connecting the printer to a computer

• Printing

Front Panel Operation

The three light emitting diodes (LEDs) on the printer’s front panel (Power,
Alert, and Empty/Pause) indicate the conditions identified in the following
illustration:

c39 frank

General Information

1

LED State Indication

Green LED

Orange LED

Yellow LED

Power

Alert

Empty/Pause

Feed/Pause

Off
On steady
Off
On flashing
On steady

Off
On flashing
On steady

3600M.004

Power off
Power on
Printing or idle
Over-temperature
System fault

Printing or idle
Paused
Media fault

Over-Temperature

If the printhead reaches an over-temperature condition, the Alert LED on the
printer flashes and the printer halts printing. Usually, you will not need to
intervene. If you allow the printer enough time to cool down, it normally
resumes operation on its own.

1-11

3600 Printer Maintenance Manual

c39 c 39

frank

Media or System Faults

If you are servicing a printer indicating a media or system fault, refer to
Chapter 4, “Troubleshooting,” for information about the problem.

Feed/Pause Pushbutton

Operating the Feed/Pause button produces the following actions, depending
on what condition the printer is in:

Printer Condition Operation/Function

If the printer is idle: Pressing and releasing the Feed/Pause button

causes the printer to feed out one label or a
minimum specified amount of media.

Pressing and holding the button down causes
media to feed continuously until the button is
released.

Pressing the Feed/Pause button twice takes the
printer offline. Press the button once more to
bring the printer online.

If the printer is printing: Pressing and releasing the Feed/Pause button

causes the printer to pause.
Subsequent pressing and releasing of the button

allows the printer to resume printing.
Pressing and holding the Feed/Pause button

down until the printer stops printing cancels the
current print job.

When the printer is first
powered on:

Pressing and holding the Feed/Pause button
down when turning printer power on places the
printer in the Test and Service mode and causes
the hardware configuration label to print.

Checking the Printer Configuration

The factory default settings for the 3600 printer are listed with the 3600
specifications in this chapter. These parameters are set using a combination of
DIP switch settings and downloadable printer commands, which are described
in the user’s manual. Remember, you can print out hardware and software
configuration labels for statistics of the printer you are servicing.

1-12

c39 frank

General Information

1

DIP Switch Settings

The DIP switches on the rear panel of the printer control communications
parameters, media type configuration, and test and service functions. To
change settings, carefully position the plastic (breakable) switches to ON or
OFF with a small straight-slot screwdriver. The printer is shipped from the
factory in the standard configuration, with the 16 DIP switches set as shown in
the following illustration. When changing switch settings, you must cycle the
printer power from off to on for the changes to take affect.

Factory

Default Settings

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

I

O

AC power cord
receptacle

DIP
switches

Serial
communications
port

ON/OFF
switch

ON

ON

OFF

1 2 3 4 5 6 7 8

OFF

3600M.005

Connecting the Printer to a Computer

To operate as intended, the 3600 must be interfaced with a computer (desktop
or laptop PC, local area network, AS400 or similar mainframe) with its serial
port configured for the communications protocol appropriate to the computer
interface. It is assumed that the correct interface (point-to-point, non-switched
modem, network, etc.) was achieved originally at installation and should have
a history of correct operation.

Refer to the 3600 User’s Manual or contact an applications analyst for detailed
information about the type of installation you are servicing.

1-13

3600 Printer Maintenance Manual

c39 c 39

frank

Serial Port Settings

Parameter Settings Description

Baud Rate 1200, 2400, 4800, 9600,

19,200

Parity Even, Odd, None Checks each transmitted character for

Protocol Intermec, XON/XOFF,

XON/XOFF with status

Device
Address

Test and
Service

A to Z,
0 to 5

Test Prints, Data Line
Print, Cloning, Selective
Transfer, Memory Reset

The rate, in bits per second (bps) at
which the host exchanges data with
the printer.

errors.
The type of network used to connect

the printer, the host, and the rest of
the data collection system. Intermec
protocol includes Standard, Polling
Mode D, and Multi-Drop protocols.

Unique address for each device
connected using Multi-Drop protocol.

Provides printer diagnostics to the
host and prints test labels.

Printing

Regardless of your computer setup, you can use several methods to download
information to print labels. This section describes different ways you can
communicate with the printer. Refer to the 3600 User’s Manual for detailed
information.

1-14

Note: Remember that these factors affect print quality: correct media, media sensitivity
setting, print speed, and correct bar code orientation.

Using Label Debut

If you are using a point-to-point (printer-to-PC) connection to communicate
with the printer, the printer parameters can be easily set using the DOS-based
software package Label Debut. The Label Debut prompting screens assist you
in designing, printing, and editing labels. Refer to the Label Debut User’s Manual
for more detailed information.

Using Third-Party Software

Your customer may be using third-party software to create label formats and
convert graphics into a UDC format that the 3600 printer can interpret. You can
use the same software to set the printer parameters.

c39 frank

Using the Printer Command Set

You can also create labels by downloading formats (designs) and data created
with the printer command set. The commands in the printer command set can
perform any function or activate any feature of the 3600 printer. You can use
the following methods to download commands:

• Downloading printer commands using DOS

• Using ASCII control characters or hexadecimal equivalents

• Using readable protocol/command characters

• Downloading printer commands with a PC communications program or

host terminal

• Using a Novell network

General Information

1

1-15

c39 c 39

frank

2

Preventive Maintenance

Preventive Maintenance

This chapter identifies scheduled maintenance actions and provides illustrated
procedures for cleaning the 3600 printer.

Preventive Maintenance Actions and Intervals

Preventive maintenance consists primarily of scheduled cleanings, but also
occassional performance checks and, possibly, adjustments based on those
checks. When you perform preventive maintenance, you should also conduct
the tests and adjustments described in Chapter 3, “Testing and Adjusting,” that
will ensure the printer continues to deliver the highest quality output. You
need to perform preventive maintenance procedures at the intervals identified
to ensure a printer remains in proper working condition.

The following table is a schedule of recommended printer cleaning and
checking. Detailed cleaning procedures follow. Chapter 4, “Troubleshooting,”
contains instructions for performing various tests and adjustments.

Printer Component Maintenance Action and Interval

2

Printer Inspect the printer (and the rest of the data collection system) at every

service visit. Your inspection should include the types of items listed in the
following section.

Printhead Inspect after every roll of media. Clean after every roll (or 6,000 inches) of

media or more often if necessary. Inspect or test print quality every service
visit. Make any necessary adjustments.

Drive roller and tear bar

Media path, edge, and
guides

TTR drive roller

Liner drive roller

Media supply post

Label and ribbon sensors

Pinch roller

Clean after every five rolls of media. Using hi-tack adhesive requires
cleaning after every roll of media. If the customer uses tag stock or
continuous media, you may want to clean after every five rolls of media,
or more often if necessary. Harsh or dusty environments dictate the need
to clean more frequently. Inspect or test the operation of these printer
elements at every service visit. Make any necessary adjustments.

2-3

3600 Printer Maintenance Manual

g

Inspecting the Printer

You should routinely inspect the printer and the rest of the data collection
system. Your inspection needs to address the following and similar concerns:

• Make sure the printer is properly grounded.

• Make sure the printer’s AC power source is within tolerance.

• Make sure the printer is clean.

• Make sure the printer is away from liquids.

• Inspect the work environment for cleanliness and arrangement. Large

electric motors, welders, and switching equipment can negatively affect
printer performance.

• Check the data collection network regularly for loose wires or poorly

installed connections. Be sure to replace corroded wires.

Cleaning the Printer

Use these procedures to access the printer parts and clean them. Heed the
warnings and cautions to prevent harm to yourself or damage to the printer.
You will need the following items to clean the printer correctly:

• Isopropyl alcohol

• Cotton swabs

• Clean lint-free cloth

• Soft bristle brush

• Vacuum cleaner

• Soapy water/mild detergent

Warnin

Energized electrical equipment is dangerous. Switch off the printer

WARNING

power and remove the power cord before cleaning any part of the
printer. Failure to comply can result in injury or death.

2-4

Preventive Maintenance

2

Removing the Media Cover

Most of the cleaning procedures require that you remove the media cover.

To remove the media cover

1. Place your fingers in the space at the lower center edge of the media cover
and pull the bottom of the cover away from the base of the printer.

2. Grasp the front of the media cover and lift the front of the cover upward.

3

Power

2

Alert

Empty/Pause

Feed/Pause

IntermecIntermec

3600

Media
cover

1

Media cover
release
(between the two
notches)

3600M.010

3. Lift the media cover away from the printer.

2-5

3600 Printer Maintenance Manual

Cleaning the Printhead

Since the printhead must maintain close contact with the media to provide
good print quality, cleaning media debris from the printhead is very important.
Clean the printhead after every roll (or 6,000 inches) of media or whenever
necessary.

Caution

Do not use sharp objects such as knives or screwdrivers to scrape

CAUTION

the printhead clean. Cleaning with sharp objects will damage the
printhead. Clean with only a cotton swab, or a clean, lint-free cloth
or tissue moistened with isopropyl alcohol.

To clean the printhead

1. Remove the media cover.

2. Raise the printhead by rotating the head lift lever clockwise until the
printhead releases.

TTR/
ribbon

Media roll

Printhead
lift lever

3600M.011

2-6

Preventive Maintenance

2

3. Remove the media from the paper path and the ribbon (if installed) from
the TTR supply and takeup hubs.

4. Use a cotton swab moistened with alcohol to remove any dirt, adhesive, or
debris from the print surface on the bottom of the printhead.

Power

Alert

Empty/Pause

Feed/Pause

Intermec

3600

Thermal
printhead

3600M.012

5. Wait 5 to 10 seconds for the print surface to dry. Reload the media (and
ribbon if used).

6. Engage the printhead by rotating the head lift lever counterclockwise until
it locks in place.

7. If you are finished cleaning, install the media cover.

2-7

3600 Printer Maintenance Manual

Cleaning the Rollers and Tear Bar

Cleaning the platen roller and the tear bar preserves print quality by ensuring
close contact between the media and the printhead. The TTR roller, liner roller,
and media roller are cleaned in the same fashion to minimize general debris
and to maximize their efficiency.

To clean the rollers and tear bar

1. Remove the media cover.

2. Raise the printhead by rotating the head lift lever clockwise until the
printhead releases.

3. Remove the media from the paper path and the ribbon (if installed) from
the TTR hubs.

4. Clean the rollers with a lint-free cloth moistened in isopropyl alcohol. Wipe
the cloth over the rollers, rotating each roller so that you clean all of it.

Media roll
roller

TTR
roller

Power

Alert

Empty/Pause

Feed/Pause

Intermec

3600

Platen

roller
Tear
bar

Liner

roller

3600M.013

5. Clean both sides of the tear bar with a lint-free cloth moistened in isopropyl
alcohol. Remove all traces of dust, paper, and adhesive.

2-8

6. Reload the media (and ribbon if used) and then engage the printhead by
turning the head lift lever counterclockwise until the printhead locks.

7. If you are finished cleaning, install the media cover.

Preventive Maintenance

2

Cleaning the Media Guides and Media Path

Clean the media guides and media path regularly to keep debris off the media
surface and printhead where irregularities can spoil print quality or damage
the printhead. Cleaning the guides also helps prevent media skewing or
improper tracking as it travels through the paper path, which can result in
print problems. Always clean the media guides immediately after any label jam
in the printer.

Media debris may accumulate around the printer mechanism and along the
media path during normal operation of the printer. Clean debris away using a
soft bristle brush or vacuum cleaner. Remove all traces of dust, paper, and
adhesive. Clean the flat surfaces of the media path (including the edge guide)
with a lint-free cloth and isopropyl alcohol. Also remove all traces of dust,
paper, and adhesive from the pinch rollers on the media access door.

To clean the media guides and media path

1. Remove the media cover.

2. Remove the media from the paper path and the ribbon (if installed) from
the TTR hubs.

3. Pull down and hold the spring-loaded lower media guide to open up the
media path.

4. Clean the lower media guide with a lint-free cloth moistened in isopropyl
alcohol.

Power

Alert

Empty/Pause

Feed/Pause

Intermec

3600

Upper media
guide

Lower media
guide

Media
path

3600M.014

2-9

3600 Printer Maintenance Manual

5. Use a lint-free cloth moistened with isopropyl alcohol to clean the upper
media guide. Be sure to remove all traces of debris.

6. Reload the media (and ribbon if used).

7. If you are finished cleaning, install the media cover.

To clean the pinch rollers

1. Open the media access door.

2. Use a cotton swab moistened with isopropyl alcohol to clean the pinch
rollers. Rotate the rollers to get any debris out of all of the grooves.

Power

Alert

Empty/Pause

Feed/Pause

Intermec

3600

Pinch
Roller

Media
access
door

3600M.015

2-10

3. If you are finished cleaning, install the media cover.

Preventive Maintenance

2

Cleaning the Label and Ribbon Sensors

There are three label sensors and a ribbon sensor on the 3600 printer that
require cleaning: the label taken sensor, the label mark sensor, the label gap
sensor, and the ribbon motion sensor.

To clean the sensors

1. Remove the media cover.

2. Raise the printhead by rotating the head lift lever clockwise until the
printhead releases.

3. Remove the media from the paper path and the ribbon (if installed) from
the TTR hubs.

4. Clean the label taken sensor and the label mark sensor with a cotton swab
moistened with isopropyl alcohol.

Ribbon
motion
sensor

Cotton
swab

Drive
roller

Label taken
sensor

Label mark
sensor

Upper media
guide
(underside)

Cleaning
brush

Lower
media guide

Label gap
sensor

Main PCB

Encoder
decal

3600M.016

2-11

3600 Printer Maintenance Manual

5. Pull down on the lower media guide to expose the label gap sensor. Using
a soft bristle brush, remove all debris and dust from the label gap sensor.

6. Clean the label gap sensor with a cotton swab and alcohol.

7. Remove the electronics cover.

8. Very carefully clean the small ribbon motion optical sensor on the main
PCB and the black and white encoder decal on the TTR supply
clutch/encoder assembly with a cotton swab moistened with alcohol.

9. Install the electronics cover.

10. Reload the media (and ribbon if used).

11. Engage the printhead by rotating the head lift lever counterclockwise until
it locks in place.

12. If you are finished cleaning, install the media cover.

Cleaning the Printer Covers

Clean the 3600 printer covers with a general purpose cleaner (soapy
water/mild detergent). Do not use abrasive cleansers or solvents. Be sure to
clean the transparent panel on the media cover so that you can see the media
supply inside the printer when the cover is closed.

2-12

3

Testing and Adjusting

This chapter contains procedures for testing the printer’s performance as a quality
check during preventive maintenance, as a functional check when troubleshooting,
and as part of the repair process after replacing a printer component. This chapter
also contains procedures for making adjustments and alignments that ensure the
printer is operating normally.

Testing the Printer

If you are on site for preventive maintenance or are following up a corrective
action and the printer is working, start conducting quality checks from the Test
and Service mode. If you are on site for corrective maintenance, determine if
the problem lies with setup and process or the printer itself. Use the Test and
Service mode to determine if the printer can print. If it can, perform the
communications test.

The quality and efficiency of producing labels reveals if a printer is operating
correctly. In addition to analyzing labels to evaluate printer performance, the
3600 printer Test and Service mode allows you to conduct printer tests that
include printing test labels (illustrated in this section) with a fixed look so you
can compare them to an expected standard. The test labels can be used for
checking printhead alignment, printhead bias, dots out of specification, label
tracking, and ribbon wrinkling. Test and Service mode functions can be run at
the printer or from a host terminal through the use of commands.

c39 frank

Testing and Adjusting

3

If you find a printer lacking in performance after running your tests, check and
make the adjustments and alignments necessary to return the printer to normal
service. If you cannot get a printer working properly with an adjustment or
alignment, troubleshoot for a component failure.

Note: Making the alignments out of order can introduce, not solve printing problems.
Review the section about printer alignments before making any changes.

3-3

3600 Printer Maintenance Manual

c39 c 39

frank

Running Test and Service Mode at the Printer

Note: When the printer is placed in Test and Service mode, it prints out a hardware
configuration label, regardless of its initial DIP switch settings, and remains in Test
and Service mode until the power is switched off and the DIP switches are reset.
Momentarily pressing the Feed/Pause button during a test will cause the test to halt.
Holding the Feed/Pause button down will start a new run of whichever test you select.

To enter Test and Service mode and select test functions at the printer

1. Switch off the printer power.

2. Set the DIP switches to select the function that you want to run.

3. Press down and hold the Feed/Pause button while powering on the
printer. The printer prints out a hardware configuration label.

4. Hold the Feed/Pause button down for 1 second. The test begins
immediately.

5. If you wish to perform another function, repeat Steps 1 through 4. The
function currently being executed is terminated and the new function
begins.

To exit Test and Service mode

1. Switch off the printer power.

2. Return all DIP switches to their original settings.

3. Switch on the printer power.

Setting DIP Switches

Use the information provided in the following tables and examples to set the
DIP switches for the Test and Service mode function that you wish to perform.
The “0”s indicate that the switch is in the OFF position and the “1”s indicate
that the switch is in the ON position.

3-4

Test and Service Switch Settings

c39 frank

Testing and Adjusting

3

Top Bank

O = OFF
1 = ON

TESTS

Test Prints

Configurations

Hardware OOOOOOOO OO OOO O OA
Software OOOOOO1O OO OOO O OA

Test Labels

Print Quality OOO1OOOO OO OOO O OA
Pitch OOO1 OO1 O OO OOO O OA

Page

Single Page OOOO1 OOO BB BBB O OA
All Pages OOO1 O1 1 O 1 1 11 1 O O A

Format

Single Format O O O 1 1 O O O B B B B B O O A
All Formats OOO11O1O 11 111 O OA

UDC

Single UDC OOOOO1 OO BB BBB B BA
All UDCs OOOOO1 1 O 1 1 1 11 1 1 A

Font

Single Font OOO1 O1 OO BB BBB B OO
All Fonts OOO1 O1 1 O 1 1 11 1 1 OO

Data Line Print 1 OOOOOOO OO OOO O O O

Cloning

Receiver O 1 OOOOOO OO OOO O OO
Sender O 1 O 1 OOOO OO OOO O OO

Selective Transfer

Receiver 1 1 OOOOOO OO OOO O O O
Send Pages

Single Page 1 1 O 1 O O C C C C C D D D D D
All Pages 1 1 O 1 O O 1 1 1 1 1 1 1 1 1 1

Send Format

Single Format 1 1 O O 1 O O O O O O D D D D D
All Formats 1 1 O O 1 O 1 1 1 1 1 1 1 1 1 1

Send UDC

Single UDC 1 1 O 1 1 O C C C C C C C C O O
All UDCs 1 1 O 1 1 O 1 1 1 1 1 1 1 1 O O

Send Font

Single Font 1 1 OOO1 CC CC CDD D DO

All Fonts 1 1 O O O 1 1 1 1 1 1 1 1 1 1 1
Send Configuration 1 1 O 1 O 1 O O O O O O O O O O
Send Tables 1 1 O O 1 1 O O O O O O O O O O
Send All 1 1 O 111OO OOOOO O OO

Memory Reset

A: OFF = Batch of 1. ON = Batch of 100.
B: Page/Format/UDC/Font number. Least significant bit first.
C: Source Page/Format/UDC/Font number. Least significant bit first.
D: Destination Page/Format/UDC/Font number. Least significant bit first.

Page/Format O O 1 OOOOO OO OOO O OO

UDC/Font O O 1 1 OOOO OO OOO O OO

Configuration O O 1 O 1 O O O O O O O O O O O

Tables O O 1 1 OOOO OO OOO O OO

All OO1111OO OOOOO O OO

OFF

ON

1 2 3 4 5 6 7 8

Bottom Bank

1 2 3 4 5 6 7 8

3600M.020

3-5

3600 Printer Maintenance Manual

c39 c 39

frank

Test and Service Configuration Settings

O = OFF
1 = ON

Label Rest Point

86XX Emulation

X Forms Adjust
Adjust Forward

Y Forms Adjust

N: Number. Least significant bit first.

Dot Increment Switch Settings

Adjust Forward
Adjust Backward

Advanced Mode
10 Mil
15 Mil

Adjust Backward

OFF

ON

1 2 3 4 5 6 7 8

O

1

1

1

O

1

1

1

1

1

1

1

OFF

Top Bank

O

1

O

O

1

O

1

1

1

O

1

O

Bottom Bank

Bottom Bank

1 2 3 4 5 6 7 8

N

N

N

N

N

N

N

N

N

N

N

N

N

N

N

N

N

N

N

N

N

N

N

N

N

3600M.021

0 = OFF
1 = ON

# of dot increments

ON

1 2 3 4 5

1

O

O

O

1
1
1
1

1
1
1
1

1
1
1
1

1
1
1

3600M.022

O

O

O

O

O

O

O

O

O

O

O

O

O

1

O

1

O

1

O

1

O

1

O

1

O

1

O

1

O

O

1

O

1

O

1

O

1

O

1

O

1

O

1

O

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

O

1

2
3

O

4
5

O

6
7

O

8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

O

O

O

O

O

O

O

O

O

O

O

O

1

1

O

O

1

O
1

1

1
O

O

1

O

O

1

O

1

1

O

O

1

O
1

1

1
O

O

1

O

O

1

O

1

1

O

O

1

O
1

1

1
O

O

1

O

O

1

O

1

1

O

O

1

O
1

3-6

c39 frank

Testing and Adjusting

3

Printing Test Labels

The test labels can be used for checking printhead alignment, printhead bias,
dots out of specification, label tracking, and ribbon wrinkling. The examples
show the DIP switch settings that select the illustrated label.

Hardware Configuration

The hardware configuration label is the first label printed when you enter Test
and Service mode. This label serves as a configuration reference as well as an
alphanumeric and alignment print test. This label contains the following
information and uses:

• Printer memory including both storage and image RAM.

• Printer mileage including inches processed and inches burned.

• Printhead settings including width, dot size, and burn pot setting.

• Firmware checksum, program, and version number.

• Vertical lines for evaluating printhead alignment.

To achieve the highest quality label, print the hardware configuration label at a
speed of 3 ips (inches per second).

3600 Hardware Configuration

Memory Installed

Storage RAM : 128 kilobytes

Image RAM : 382 kilobytes

Flash RAM : none

Mileage

Inches Processed : 540
Inches Burned : 204
Labels Cut : 0

Printhead

Width : 1344 dots
Dot Size : 5.0 mil
Burn Pot Setting : 213

Hardware Options

I/O Option : none
Internal Option : none
External Option : Self Strip

Firmware Checksum

ROMO (U9) : FAC3

ROM1 (U8) : OC3E
Program : 062198
Version : 1.1

1 2 3 4 5 6 7 8

ON

1 2 3 4 5 6 7 8

ON

3600M.023

OFF

OFF

3-7

3600 Printer Maintenance Manual

c39 c 39

frank

Software Configuration

This three-label set lists current configuration parameters that are set from the
host computer. It also lists defined pages, formats, graphics, fonts, and
installed options. This label serves as a configuration reference as well as an
alphanumeric and multiple label alignment and print test.

1 2 3 4 5 6 7 8

Program Version : 1.1
Pages Defined : 0
Formats Defined : 0, 19
Fonts Defined : 0, 1, 2, 7, 20 21, 22, 23, 24,

Graphics Defined : none

25, 30, 31, 32, 33, 34, 35, 36,
37, 38, 39, 40, 41

PRINT SPEED - 3.0 IPS RIBBON SAVE - Disabled
IMAGE BANDS - 3 SELF STRIP - Disabled
MAX LABEL LENGTH - 4 inches CUTTER - Disabled
LABEL STOCK - Inter- label gap DARK ADJUST - 0
MEDIA TYPE - Direct Thermal X FORMS ADUST - 0
MEDIA LENGTH - 0 inches Y FORMS ADJUST - 10
CHARACTER SET - US ASCII LABEL REST POINT - 0
TRANSLATION - Disabled SENSITIVITY - 420
EMULATION - Disabled
LABEL RETRACT - Enabled

BAUD RATE - 9600
DATA BITS - 7
MESSAGE LENGTH - 255
PARITY - Even
STOP BITS - 1
PROTOCOL - Xon/Xoff No Status
DEVICE ADDRESS - A
INTERNAL OPTIONS - none
EXTERNAL OPTIONS - Self Strip

Print Quality

This label contains bar codes and human readable fields that you can use to
determine whether the printer you are testing is attaining the best print quality
possible. If you notice problems with the print quality, check and perform the
adjustment and alignment procedures provided in this chapter to achieve
optimum printer performance.

ON

ON

OFF

1 2 3 4 5 6 7 8

OFF

3600M.024

3-8

MODEL

3600

Prog 062198

Version 1.1

CODE 39

CODE 39

3.0 / 1

INTERMEC Corporation

Everett, WA 98203

*PICKETFIELD*

*SUPPLIER*

*SUPPLIER*

*PICKETFIELD*

*PICKET FIELD*

*PICKET FIELD*

INTERMEC

*PICKET FIELD*

1 2 3 4 5 6 7 8

CODE,39,3.0./1

CODE 39 3.0 /1

CODE,39,3.0./1

CODE 39

2.5 / 1

ON

OFF

*PICKETFIELD*

1 2 3 4 5 6 7 8

ON

3600M.025

OFF

c39 frank

Testing and Adjusting

3

Format

This label, which can be a test of a single format or can provide a two-label
sample of all the formats, has bar codes and human-readable fields that you
can use to determine whether the printer you are testing is attaining the best
print quality possible using a particular format.

OOOOOOOOOOOOOOOOOO

*

*

CODE,39

CODE 39 0123456789

3600 TEST LABEL

CODE,39

5670

1234

CODE,39

0123456789

0123456789

CODE 39

3600 TEST LABEL

CODE 39

3600 TEST LABEL
3600 TEST LABEL

3600 TEST LABEL

3600 TEST LABEL

1 2 3 4 5 6 7 8

ON

OFF

1 2 3 4 5 6 7 8

3600 TEST LABEL

3600 TEST

CODE,93,TEST,PRINT,BARCODE

CODE,93,TEST,PRINT,BARCODE

DT / TTR PRINT QUALITY SAMPLE

ON

3600M.026

OFF

Pitch

This label is a gray scale printout of every third dot. The test label should
present a regular pattern with dots that line up diagonally when held at an
angle. Look for irregularities that may signal a problem with the platen roller
or the media path. If the printhead is uneven or the print path is skewed, it will
be reflected in this label. Use this label to determine whether the printhead is
printing evenly, but use the actual customer format to pass/fail the printhead.

1 2 3 4 5 6 7 8

ON

ON

OFF

1 2 3 4 5 6 7 8

OFF

3600M.027

3-9

3600 Printer Maintenance Manual

c39 c 39

frank

Font

This is a multiple-label test of the available fonts. You can test a single font
(Font 20 shown) or all of the fonts. An all-font test will use a lot of media. It is
better that you test one font at a time to make your determinations.

0 4 8 12 16 2 124 128 132 136 140 192 196 200 204
1 5 9 13 17 2 125 129 133 137 141 193 197 201 205

FONT 20

2 6 10 14 18 2 26 130 134 138 142 194 198 202 206
3 7 11 15 19 23 7 131 135 139 143 14 95 199 203 207

1 2 3 4 5 6 7 8

|

}

_

Á A Ë D

ÁÅÈÌ

Â Æ Ê Î

Â Ç Ë Ï

ON

OFF

1 2 3 4 5 6 7 8

ON

3600M.028

Page

These labels test the ability to download and correctly print single or multiple
pages (a group of labels always printed together) of label data from a host. The
data can be yours or the customer’s, but you should include a test of the
customer’s labels to determine whether the printer you are testing is attaining
the best print quality possible with the customer’s data.

UDC

This label tests the ability to download and correctly print single or multiple
user-defined characters (bitmap graphic) from a host. The data can be yours or
the customer’s, but you should include a test of the customer’s labels to
determine whether the printer you are testing is attaining the best print quality
possible with the customer’s data.

OFF

3-10

Running Test and Service Mode From a Host Computer

When conducting Test and Service mode functions from a computer, hardware
diagnostic information is uploaded to the host from the printer.

The following table describes the commands you would issue from a host
terminal to run the Test and Service mode. To select Test and Service mode
from Print mode, send <ESC>T from the host terminal.

Note: All commands in Test and Service mode end with the command terminator (;),
except the last command in a message.

Test and Service Mode Command Descriptions

Command Code Test Description

c39 frank

Testing and Adjusting

3

A Transmit Ambient

Temperature*

B Printhead Resistance

Test*

C Print Pitch Label Causes the printer to print the pitch label.
D Reset Printer

Configuration

G Transmit

Transmissive Sensor
Value

K Dark Adjust* This command changes the darkness of the print on your

L Transmit Paper Path

Open Sensor Value*

M Transmit Reflective

Sensor Value

P Transmit Printhead

Temperature Sensor
Value

Transmits the ambient temperature sensor output back to
the host. The value ranges from 00 to FF.

Causes the printer to begin the printhead resistance test. The
printer will respond with the ASCII character string “pass”
or “fail.”

Sets the printer configuration to the factory defaults.

Transmits the label gap output back to the host. Values
ranges from 00 to FF.

labels. It is for fine-tuning only.
Transmits the Paper Path Open switch value back to the

host. A value of 0 indicates the paper path is open and a
value of 1 means it is closed.

Transmits the label mark reflective sensor output back to the
host. The values range from 00 to FF.

Transmits the Printhead Temperature Sensor output back to
the host. Values range from 00 to FF.

Q Print Quality Label Causes the printer to print out the print quality program

and model number label.

R Exit Test and Service Causes the printer to exit Test and Service mode.

* The printer ignores this command.

3-11

3600 Printer Maintenance Manual

c39 c 39

frank

Test and Service Mode Command Descriptions (continued)

Command Code Test Description

S Transmit Printhead

Resistance Values*

T Transmit Label

Taken Sensor Value

U Transmit 40V Supply

Value*

V Transmit 24V Supply

Value*

* The printer ignores this command.

Testing Printer and Host Communications

This is a simple test of host-to-printer communications. If this test fails, there
may be a problem with the printer serial port receiver circuitry or the setup.

To test host-to-printer communications

1. Switch the printer power off. Return the DIP switch settings to the standard
configuration if they have been changed.

Transmits the average, maximum, or minimum printhead
dot resistance value back to the host. Each value is a
numeric data string separated by a comma.

Transmits the label taken sensor output back to the host.
Values can range from 00 to FF.

Transmits the 12V supply output back to the host. The
values range from 00 to FF.

Transmits the 24V supply output back to the host. Values
can range from 00 to FF.

2. Press and hold the Feed/Pause button while powering on the printer. The
printer presents the hardware configuration test label.

3. Release the Feed/Pause button after the hardware configuration label is
printed. You are now in data line print mode within the Test and Service
mode.

4. Send down some characters from the host. At this point the printer does
not attempt to interpret any printer commands, but simply prints each
character and its hexadecimal equivalent as it is received. If you are using a
PC running DOS, send down the following strings of commands from the
DOS prompt:

Note: ^Z is [Ctrl] [Z].

\MODE COM1: 96,E,7,1,N [Enter]

(to configure the serial port)

\COPY CON COM1: [Enter]

(tells the PC to copy the following text to the COM1 port)

ABCDEF^Z [Enter]

(these characters are sent to the printer)

3-12

c39 frank

g

5. A good test will result in the following printout :

6. To enter normal print mode again, switch the printer power off and then on
again.

If this test does not work, recheck after you make sure that the DIP switches
are set to the default configuration and that the printer cable is securely
plugged into COM1 of your PC.

Testing and Adjusting

3600M.029

3

Note: If you are using a different platform to communicate with your printer, refer to
your host computer user’s manual and the 3600 Bar Code Printer User’s Manual
for more detailed information about downloading commands.

Adjusting the Printer

The following procedures provide instructions for adjusting the print bias, the
print intensity (darkness), the label mark sensor, the label gap sensor, the label
taken sensor, and the printhead fine adjustment lever on the 3600 printer.

Warnin

Always disconnect the power cord before removing the electronics

WARNING

CAUTION

cover unless a procedure requires the unit to be energized. Failure to
disconnect the power cord may result in injury or death due to
electric shock.

Caution

The printhead and integrated circuits on printer circuit boards in
this equipment are sensitive to damage by electrostatic discharge
(ESD). Prevent ESD by always wearing skin contact ground straps
firmly attached to the equipment metal base assembly when
working inside of the equipment housing. Failure to comply can
result in damage to components or the printhead.

3-13

3600 Printer Maintenance Manual

c39 c 39

frank

Adjusting the Print Bias for Print Quality

Adjust the bias with a straight-slot screwdriver if the printhead is not making
even contact with the media. Using different width media, especially narrow
media, can result in uneven contact or a spot where there is no media between
the printhead and the platen roller. Extra wear and damage can occur if narrow
media is used for extended periods with incorrect bias.

To adjust the bias adjust screw

1. Remove the media cover and locate the bias adjust screw.

Printhead bias
adjust screw

Power

Alert

Empty/Pause

Feed/Pause

IntermecIntermec

IntermecIntermec

3600

3600

2. Turn the bias adjust screw counterclockwise to compensate for light print
on the right side of the label; turn the bias adjust screw clockwise to
compensate for light print on the left side.

If printing is light on
the right side of label,
turn the bias adjust screw
counterclockwise.

*N

AR

RO

WL

E*

3. Install the media cover.

If printing is light on
the left side of label,
turn the bias adjust screw
clockwise.

RO

WL

E*

3600M.030

*N

AR

3600M.031

3-14

c39 frank

Testing and Adjusting

3

Adjusting the Print Intensity

Note: Before you adjust print intensity, verify the sensitivity rating for the media
matches the rating set in the printer.

Use the darkness adjust control in combination with the darkness adjust
command <SI>d to fine-tune the intensity of print on your customer’s labels.
The fine adjustments compensate for variations in the media (“lot to lot”), the
printhead, or the printer. Set the darkness adjust control with a small straight­slot screwdriver after entering the proper sensitivity number.

To adjust the print darkness control

1. Locate the darkness adjust control on the back of the printer. Make
adjustments with a small straight-slot screwdriver.

Turn the darkness
adjust control clockwise

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

I

O

for darker density.

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

3600M.032

Darkness
adjust control

Turn the darkness adjust
control counterclockwise
for lighter density.

Screwdriver

2. Increase the darkness by turning the darkness adjust control clockwise or
decrease the darkness by turning the control counterclockwise. Run a test
print to evaluate the print quality.

3-15

3600 Printer Maintenance Manual

c39 c 39

frank

Adjusting the Printhead Adjustment Lever for Print Quality

The printhead adjustment lever is located at the end of the printhead pivot
bracket. It allows fine-tuning of the printhead fore/aft position. The printhead
adjustment lever provides three stops forward movement of the printhead and
three stops backward movement from center position in 0.006-inch increments.

To achieve the best print quality, raise the printhead with the printhead lift
lever and position the printhead adjustment lever as shown in the illustration:
from the rear, adjust clockwise/left to move the printhead forward, or adjust
counterclockwise/right to move the printhead backward.

Printhead
adjustment
lever

moves printhead

forward

moves printhead
backward

3600M.033

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

I

O

3-16

c39 frank

Testing and Adjusting

3

Adjusting the Label Mark Sensor

The mark sensor detects the mark on the back of continuous media stock. The
output is then used to determine the start of print point. This sensor is located
under the label pathway across from the platen roller. Two adjustments affect
the performance of this sensor, its physical position and sensitivity. To perform
this procedure, you need the following tools:

• Digital multimeter

• #2 Phillips screwdriver

• Small straight-slot screwdriver

To position the label mark sensor

1. Remove the media cover.

2. Use your finger to reach underneath the lower guide.

Platen
roller

Locate the label mark sensor
behind the platen roller near
the inboard edge of the printer.
Use your index finger to adjust
the label mark sensor.

Inboard edge
of printer.
The platen roller
is not shown
for clarity only.

Label mark
sensor

3600M.034

3-17

3600 Printer Maintenance Manual

c39 c 39

frank

3. Slide the mark sensor into a position that centers it over the label mark as
the media passes by. It is adjustable from the inboard edge of the extrusion
to one half of the paper path width toward the outboard edge.

To adjust the label mark sensor potentiometer sensitivity

1. Remove the electronics cover

2. Switch on the printer power.

3. Enable the printer for mark sensing using the <SI>T{2} command.

4. Connect the positive lead of a digital voltmeter to TP18 (MARK) and the
negative end to TP14 (GND) on the main PCB.

TP18

TP14

R191

3600M.035

5. Place the white portion of a label under the mark sensor.

6. Adjust R191 on the main PCB so the voltage at TP18 is 1V ± 0.2V.

7. Place the black mark portion of the label under the mark sensor.

8. The voltage at TP18 should now be greater than 2.5V.

3-18

9. Install the printer electronics cover and the media cover.

10. Check the printer for proper operation.

c39 frank

Testing and Adjusting

3

Adjusting the Label Gap Sensor

The label gap sensor output enables the software to determine the leading edge
of a label by detecting the label gap. The label gap is the space between labels
on the backing material. This reading enables the printer to properly position
the start of print point. To perform this procedure, you need the following
tools:

• Digital multimeter

• #2 Phillips screwdriver

• Small straight-slot screwdriver

To adjust the label gap sensor potentiometer

1. Remove the media cover and the electronics cover.

2. Connect the positive lead of a multimeter to TP15 (GAP) and the negative
lead to TP14 (GND) on the main PCB.

TP15

TP14

R124

3. Switch on the printer power.

4. Insert the label backing only in the label gap sensor. Adjust R124 on the
main PCB so that the voltage at TP15 (GAP) is 1V ± 0.2V.

5. Insert both the label and the label backing in the sensor. Verify that the
voltage at TP15 (GAP) is greater than 3V.

3600M.036

6. Install the printer electronics cover and the media cover.

7. Check the printer for proper operation.

3-19

3600 Printer Maintenance Manual

c39 c 39

frank

Adjusting the Label Taken Sensor

The label taken sensor output enables the software to determine that a label has
been taken by detecting the label’s presence. To perform this procedure, you
need the following tools:

• Digital multimeter

• #2 Phillips screwdriver

• Small straight-slot screwdriver

To adjust the label taken sensor

1. Remove the media cover and the electronics cover.

2. Connect the positive lead of a multimeter to TP19 (TAKEN) and the
negative lead to TP14 (GND) on the main PCB.

R190

TP19

TP14

3600M.037

3. Switch on the printer power.

4. Feed one label out of the printer so that it rests under the label taken sensor
in a correct orientation.

5. Adjust R190 on the main PCB until the voltage at TP19 is 1.2V +

0.2V.

3-20

6. Remove the label from under the label taken sensor.

7. The multimeter reading at TP19 should now read above 4.5V.

8. Install the printer electronics cover and the media cover.

9. Check the printer for proper operation.

Aligning the Printer

g

The following procedures provide instructions for aligning the rollers, aligning
the printhead, and aligning the ribbon supply hub on the 3600 printer.

Note: These alignments should be made in the sequence given. Performing them out of
order can introduce and not solve printing problems.

Warnin

Always disconnect the power cord before removing the electronics

WARNING

CAUTION

cover unless a procedure requires the unit be energized. Failure to
disconnect the power cord may result in injury or death due to
electric shock.

Caution

Integrated circuits on printer circuit boards in this equipment are
sensitive to damage by electrostatic discharge (ESD). Prevent ESD
by always wearing skin contact ground straps firmly attached to
the equipment metal base assembly when working inside of the
equipment housing. Failure to comply can result in damage to
components.

c39 frank

Testing and Adjusting

3

CAUTION

Caution

Align only one outboard plate at a time (either upper or lower) to
put the rollers back into factory alignment. If both plates are
loosened, it may not be possible to align the rollers outside of the
factory.

3-21

3600 Printer Maintenance Manual

c39 c 39

frank

Aligning the Rollers

You should perform this procedure every time an outboard plate is removed or
replaced. To perform this procedure, you need the following tools:

Note: If the printer you are servicing has upper outboard plate Intermec Part No.
062476-002 installed, you need to replace it with a new upper outboard plate Intermec
Part No. 063225-001 before you can perform the following roller alignment.

• Roller alignment tool, Intermec Part No. T43150

• #2 Phillips screwdriver

To align the rollers

1. Switch off the printer power and remove the power cord.

2. Remove the media cover, the electronics cover, and the front bezel cover
(refer to Chapter 5, “Remove and Replace Procedures,”for detailed
instructions).

3. Raise the printhead with the printhead lift lever. Remove media and ribbon
if loaded.

4. Loosen the Phillips screws on the outboard plate that you are aligning.

Note: Align only one outboard plate at a time (either the upper or the lower) to put

the rollers back into factory alignment. If both plates are loosened, it may not be
possible to align the rollers outside of the factory.

5. Align the three holes in the roller alignment tool with the platen roller, the
liner roller, and the TTR roller. The fourth hole in the roller alignment tool
fits over the black plastic cap closest to the front of the printer.

UP

→

3-22

3600M.038

c39 frank

Testing and Adjusting

3

6. When the tool fits properly on all of the rollers and the bushing, tighten the
screws on the outboard plate that you are aligning.

7. Reattach the front bezel cover. Ensure that the media access door operates
properly (snaps firmly shut) after the front bezel cover is installed.

8. Install the electronics cover.

9. Reload media (and ribbon if used).

10. Install the media cover and the power cord.

11. Switch on printer power and check for proper operation.

Aligning the Printhead

Align the printhead only if necessary. To perform this procedure, you need the
following tools:

• Printhead alignment tool, Intermec Part No. T43099

• 9/64-inch Allen screwdriver

To align the printhead

1. Switch off the printer power. Remove the power cord and the media cover.

2. Raise the printhead with the printhead lift lever. Remove media and ribbon.

3. Position the printhead adjustment lever clockwise/left two clicks during
the printhead alignment. Loosen the two Allen screws located on the
printhead yoke at the back of the printhead heatsink.

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

I

O

Printhead
adjustment
lever

moves printhead
backward

forward

moves printhead

3600M.039

3-23

3600 Printer Maintenance Manual

c39 c 39

frank

Note: This is a change in procedure from previous printhead alignment

instructions that directed the printhead adjustment lever to be in the neutral/center
position during alignment.

4. Install the printhead alignment tool and press the printhead assembly
down on the platen roller. Align the tool with the notches in the heat sink
and the printhead.

5. Alternately tighten the two 9/64 inch printhead yoke screws until secure.

6. Remove the printhead alignment tool.

7. Return the printhead adjustment lever to the neutral/center position.

8. Reload media (and ribbon if used).

9. Install the media cover and the power cord.

10. Switch on printer power and test for proper printhead alignment by
printing out the print quality and pitch labels.

Place the cutouts
of the printhead
alignment tool onto
the shaft of the platen
roller.

Printhead
alignment
tool

Printhead
alignment
tool

Power

Alert

Empty/Pause

Feed/Pause

Intermec

3600

Guide pin
(Align with the notches
on the heatsink and printhead.)

Heatsink

Notch

Printhead
lift lever

3-24

3600M.040

c39 frank

Testing and Adjusting

Aligning the TTR Supply Hub

You should align the TTR supply hub only if you are experiencing ribbon
wrinkle on full width
To perform this procedure, you need the following tools:

• TTR supply hub alignment tool, Intermec Part No. T43149

• #2 Phillips screwdriver

To align the TTR supply hub

1. Switch off the printer power.

2. Remove the media cover and the electronics cover.

3. Install the TTR supply hub alignment tool as shown.

ribbon after the rollers and printhead have been aligned.

3

Ribbon supply
hub alignment
tool

3600M.041

4. Tighten the alignment tool thumbscrew so the bushing tab is flush against
the bushing on the hub adjustment plate.

5. Loosen the two screws securing the hub adjustment plate.

6. Switch on the printer power.

7. Print a series of the same kind of labels that were having the ribbon
wrinkling problem. While they are printing, adjust the TTR supply hub up
or down (with the thumbscrew on the tool) until ribbon wrinkling is
eliminated.

3-25

3600 Printer Maintenance Manual

c39 c 39

frank

Note: If this adjustment does not eliminate ribbon wrinkling, try readjusting the

ribbon supply hub and realigning the printhead.

8. When an alignment is achieved that eliminates the ribbon wrinkling,
tighten the two screws on the hub adjustment plate.

9. Remove the tool and retest for ribbon wrinkling.

10. After the printer is correctly adjusted, switch off the power and reattach the
electronics and media covers.

3-26

4

Troubleshooting

This chapter provides you with information that will help you determine why a printer
may not be working and how to get it working again.

About Troubleshooting and Repair

Use the information in this chapter to identify the cause of a failing printer. It is
assumed that a printer is not working and that the troubleshooting actions
referenced in the user’s manual were not used, failed to clear the problem, or
pointed to a printer malfunction.

Troubleshooting Tips

One of your first concerns is to duplicate and isolate the problem, to confirm if
the problem is the printer or not. Usually the printer was already working at
some point before you were called, so start with the last time it worked and
move forward logically, considering what might have changed since then. Do
not neglect to check simple things like, “Is the printer plugged in? Is there
power at the outlet? Are all of the connections good?” Spend a minute visually
examining the unit and considering the situation to see if anything obvious
stands out.

Troubleshooting

4

Where to Start

If you have not already done so, review the user’s troubleshooting information
in this chapter and use tests from Chapter 3, ”Testing and Adjusting,” to
determine if and how the printer performs offline. If you have a working
installation at hand, consider the value and difficulties of trying the printer in a
known good working location. If you take this kind of action, be careful not to
cause additional problems or confuse your search.

If you decide you need to and can, carefully and logically swap known good
printers, subassemblies, or components with failing or suspect items as a
means of isolating the cause of the problem. Do not do this if you think any
known good item can be damaged.

Repair

Repair is whatever action you take to eliminate the problem that you are on site
to fix. If “repair” is the removal and replacement of a key printer component,
refer to Chapter 5, “Remove and Replace Procedures.”

4-3

3600 Printer Maintenance Manual

Troubleshooting Checklist

If the host receives an error message or a functional problem with the printer is
encountered, the user’s manual starts with the following:

• Check whether the printer sends an error code to the host in response to a

<BEL> command.

• If an error code is sent, find it in the “Error Codes” table in this chapter. Try

the solution given for the respective error code to attempt to correct the
problem.

• If the printer does not send an error message to the host, try to match the

symptom of your failure in the “Printer Operation Problems” or “Print
Quality Problems” tables in this chapter. Try the solution given for the
respective symptom to attempt to correct the problem.

• Clean the printer components and check all connections.

4-4

Error Handling

This section describes how the 3600 printer handles certain error conditions it
may encounter in printer or programming commands. Error codes sent to the
host, the problem the code is reporting, and the usual solution are listed in a
table at the end of this section.

Syntax Errors

The 3600 printer responds to syntax errors in the messages it receives from the
host by attempting to execute the commands. It does not ignore a command
with a syntax error. Instead, the printer produces output, even if it is
erroneous, which gives you an indication of what went wrong and what
should be done to correct the problem.

Parameter Errors

Certain commands require optional parameters. If these parameters are not
supplied, default values are substituted. If a parameter is above its maximum
range limit, the maximum value is used. If it falls below the minimum range,
the minimum value is used. The range and the default value for each command
are listed in Chapter 6 of the user’s manual.

Troubleshooting

4

Image Overrun Errors

Image overrun occurs when a label is too complex to image for a given print
speed. An overrun will cause the printer to abort the label being printed. This
error is most common on labels over 5 inches long.

The printer automatically attempts to correct for this error condition by
resetting to the lowest print speed and to the highest number of image bands,
and then repeats printing the label. The printer remains at this setting until you
reset it. If an image overrun still occurs, printing for that batch of labels stops
and any following commands are executed.

Installing the optional 512K memory expansion prevents image overrun errors.

4-5

3600 Printer Maintenance Manual

Invalid Numeric Character Errors

If non-numeric characters are included within a numeric data string in a
command, the printer disregards them and continues to process the rest of the
valid numeric characters. However, if a non-numeric character begins the
numeric data string, the printer uses a default value for the affected command.

Here are two examples of valid numeric character strings and one example of
an invalid string:

12a valid
1a2 valid
a12 invalid

Insufficient Storage RAM Errors

Before storing new formats, graphics, or user-defined fonts in the static RAM,
the printer checks to see if it has sufficient memory to store them. If there is
insufficient memory, the last editing session is disregarded. The printer is
designed to preserve the integrity of the existing data in the static RAM.

Error Codes

Most of the problems you may encounter cause the 3600 printer to send an
error code to the host. When this happens, find the error code in the following
table and try the solution given to attempt to correct the problem.

4-6

Troubleshooting

4

Printer Errors

Error Code Problem Solution

00 No error.
01 Invalid bar code check character. Verify the bar code check character modifier used in the

bar code program command.

02 Invalid number of bar code

characters (Code UPC/EAN).

04 Bar code check character within

numeric field marks.

05 Supplemental delimiter within

numeric field marks (Code
UPC/EAN).

06 Invalid supplemental character

count (UPC/EAN).

07 More than one supplemental

delimiter (Code UPC/EAN).

08 Invalid start/stop characters

(Codabar).
11 Invalid bar code data. Verify data in the label format.
12 Data count exceeded. Data count should not exceed what is specified for the

13 Entering data in non-data entry field. Check the field for accuracy.
21 Quantity or batch count out of range. Quantity of labels or number of batches should be

Verify the number of bar code characters used in the bar
code program command.

Check the bar code program command for accuracy.

Check the bar code program command for accuracy.

Check the bar code program command for accuracy.

Check the bar code program command for accuracy.

Verify start and stop characters in the label format.

field.

between 1 and 9999.

22 Field increment/decrement out of

range.
23 Intercharacter/message delay out of

range.
24 Missing preamble/postamble data. Delete the setup for preamble or postamble data, or

25 Invalid format transmission syntax. Check the format transmission syntax. The correct

26 Invalid page transmission syntax. Check the page transmission syntax. The correct syntax

27 Invalid font transmission syntax. Check the font transmission syntax. The correct syntax

28 Invalid UDC transmission syntax. Check the UDC transmission syntax. The correct syntax

Quantity should be between 1 and 9999.

Delay should be between 0 and 9999.

include the data.

syntax is <ESC>x{n} with n ranging from 0 to 19.

is <ESC>y{n} with n ranging from 0 to 9.

is <ESC>v{n} with n ranging from 0 to 24.

is <ESC>u{n} with n ranging from 0 to 99.

4-7

3600 Printer Maintenance Manual

Printer Errors (continued)

Error Code Problem Solution

32 Non-immediate command or data

received after buffer full.

33 Invalid field delimiters. Check for all pairs of field delimiters, and make sure both

34 Invalid escape command. Correct the escape command syntax.
35 Invalid data shift command. Correct the shift command syntax.
36 Invalid or undefined format

number.

37 Insufficient room in RAM to print

format.
38 Invalid or undefined field number. Verify the field number in the label format.
41 Syntax error for program

commands.
42 Insufficient room in RAM to store

format.

43 Too many fields in label format. You can use up to 200 fields in a format and each field can

Allow the printer to empty the buffer contents before
sending commands or data.

are numeric or both are alphanumeric.

Verify that the format numbers are between 0 and 19.

Reduce the number of data fields in the format.

Check the program command for proper syntax.

Empty the buffer contents. If the format still does not fit,
delete some fields or other data from the format. You may
have to remove or reduce the UDCs, formats, or fonts if
necessary.

Note: Entering <ESC>m tells the host how much memory is
installed and how much is available.

use up to 250 characters. Reduce field size or delete some

fields.
46 Undefined statement. Check the statement syntax.
52 Invalid UDC/UDF bitmap cell

height/width or intercharacter
space.

53 Insufficient room in RAM to store

UDC or UDF.

54 Invalid UDC command syntax. Correct the UDC command syntax.

Verify that cell heights and widths are between 1 and 599,

and that the intercharacter space is between 0 and 199.

Remove or reduce formats, fonts, or UDCs.

4-8

Printer Operation Problems

If a printer is not operating correctly, try locating the problem and
implementing the solution from the following table:

Symptom Possible Causes Solution

Troubleshooting

4

No power or loss of
power.

Labels stop feeding
through the printer.

Printer slows down. Image bands or print speed are

AC power cable is damaged or
disconnected.

Printer circuit breaker tripped. Turn the printer off and then back on again

Power supply function is failing. Check the transformer and the main PCB.

Printer is out of media. Load new media.

Label stock is loaded incorrectly. Check the media path.
Media is sticking to the paper

path.
Printer is set for continuous label

stock.

Label sensor(s) dirty, out of
adjustment, or failing.

incorrectly set.

Make sure the power cable is plugged into both
the printer and an outlet or power strip. Replace
the cable if it is damaged.

(determine why it tripped). Replace circuit
breaker if defective.

Replace whichever is defective.

Clean any extraneous material from the paper
path and clean it thoroughly.

Use the Transmit Configuration Parameters
<ESC>p command to check the configuration
setting. Select the correct setting with the Select
Label Stock Type command (<SI>T).

Clean and adjust, or replace the sensor(s) as
required.

Change the image bands or print speed settings.

Labels stick to door or
fail to strip.

The stepper motor
stalls while printing
media that is less than

6.6 inches wide.
Configuration label

does not print.

Printer has aborted and print
speed and image bands were
reset.

The self-strip roller is dirty or the
pinch roller is not contacting the
strip roller.

The bias is not adjusted properly. Adjust the bias adjust screw to the optimum

The media is loaded incorrectly. Try reloading the media.

Change the image bands or print speed settings.

Clean the self-strip roller.

printing position.

4-9

3600 Printer Maintenance Manual

Print Quality Problems

If labels are not printing properly, try locating the problem and implementing
the solution in the following table:

Symptom Possible Causes Solution

Blotches on labels. Dirty printhead. Clean the printhead.

Dirty media path or rollers. Clean the media path.

Printing is too light or
too dark.

Printing not aligned
on label.

Labels are not
stopping at the right
point to be removed.

Poor quality label or ribbon
stock.

Darkness adjust control is set
incorrectly.

Poor quality label or ribbon
stock.

Sensitivity number is set
incorrectly.

Dirty printhead. Clean the printhead.
The printhead adjustment lever

is not positioned as needed.
Printer is misfeeding media. Make sure that media is installed properly along

Platen roller and/or printhead
out of alignment.

Label rest point command is
incorrectly set.

Printer is set for continuous label
stock.

Use only Intermec label and ribbon stock to
ensure superior print quality and product
performance.

Adjust the knob to achieve the best print quality.

Use only Intermec label and ribbon stock to
ensure superior print quality and product
performance.

Change sensitivity setting to match the type of
media being used. If sensitivity is set correctly,
try changing the dark adjust command.

Reposition the printhead adjustment lever.

the entire media path.
Perform roller alignment first and then

printhead alignment.
Adjust the label rest point.

Set the printer for proper label stock; either gaps
or marks.

4-10

Troubleshooting

Symptom Possible Causes Solution

Print quality is poor. Incorrect media sensitivity. Change sensitivity setting to match the type of

media you are using. If sensitivity is set
correctly, try changing the dark adjust.

4

The darkness of label print is too
light or too dark.

Printhead, platen roller, or label
path are dirty.

Uneven print contrast (density). Adjust the bias adjust screw.
Incorrect label or ribbon stock is

used to print labels.

Ribbon wrinkling. Check to make sure that the ribbon is installed

Ribbon installed upside down. Install ribbon with shiny side facing the

Properly set the darkness adjust control.

Clean printhead, platen roller, and label path.

Use only Intermec label and ribbon stock to
ensure superior print quality and product
performance.

correctly.
Check the following alignments in the sequence

given, testing for elimination of the problem
before performing the next alignment.

Note: Making these adjustments out of order can
introduce and not solve printing problems.

1) Roller alignment

2) Printhead alignment

3) Ribbon supply hub alignment

printhead.

Direct thermal/thermal transfer
switch set in the wrong position.

Printhead or platen roller is
severely worn.

Media may be slipping against
the platen roller causing the
printing to compress.

Set the switch for the type of media being used.

Replace the platen roller or printhead.

Switch to approved media or clean the
printhead and platen.

4-11

3600 Printer Maintenance Manual

Communications Problems

If a printer is not receiving downloaded data, consider the causes and solutions
in this section.

Symptom Possible Causes Solution

Printer does not
communicate with the
host.

Serial port is incorrectly
configured.

Disconnected, damaged, or
incorrect I/O cable.

Make sure the printer’s serial port settings
match those of the host. Print a software test
configuration label to check the serial port
settings.

Check the connections at both ends. Replace the
cable if necessary.

Any loss of data can cause printing errors or missing data. The 3600 printer is a
serial ASCII device that communicates with the host through an ASCII serial
communications port. The two devices communicate through the use of
hardware and software protocols (handshaking). The printer utilizes both
forms of handshaking simultaneously when the printer’s input buffer is full.
Consider this process when troubleshooting.

Hardware handshaking uses pins 11 or 20 of the RS-232 interface to control
data flow. When the printer is using Intermec “Standard” protocol, pin 11 and
20 are held high when the printer is ready to receive data. The pins are held
low when the printer is in one of the following conditions:

• Buffer full

• Ribbon fault

• No label stock

4-12

• Label at strip pin

The 3600 printer uses XON/XOFF protocol for software handshaking. When
the input buffer is full, the printer transmits an XOFF character. This character
alerts the host to the fact that the printer buffer is full and cannot receive any
more data. When the printer is ready to receive more data, it sends the XON
character.

To check for communications problems

1. Check the cabling from the printer to the host system.

2. Check the interfacing of the devices that are communicating with the
printer.

3. Check the printer for proper electrical operation of the serial
communications port.

4. Test to see that the host system is not overrunning the printer’s input
buffers.

5. Check to see that the data string being sent to the printer contains the
correct information.

Environmental Problems

Symptoms associated with environmental problems are printing garbage,
resetting, or total lockup. One way to discover if the problem is environmental
is to see if the problem goes away when the printer is moved to a new location.
If it shows up in a printer recently moved from another area, the problem is
probably environmental. The following is a discussion of different types of
environmental problems.

Troubleshooting

4

Electrostatic Discharge (ESD)

ESD can cause failure or weakening of affected components. Typically, ESD
occurs when a person with a large electrical potential unintentionally
discharges that potential by touching the conductive surfaces of the equipment.
Static charge is created through friction from people walking, conveyor belts,
paper moving through a printer, and wheelchairs. The solution is to reduce the
charge by grounding and by employing prevention measures such as antistatic
bags for ICs and PCBs, grounded antistatic mats, antistatic spray for carpeting,
antistatic clothing (no wool), antistatic wax for tile floors, conductive floor
materials, air ionizers, and antistatic cleaners for plastics. To further protect
against ESD, use shielded cable for interface cables, and tie the shield to metal
backshells at both ends of the cable. Do not connect the shield of the cable to
the chassis ground or signal ground of the interface (metal backshells will be
tied to the chassis).

4-13

3600 Printer Maintenance Manual

Electromagnetic and Radio Frequency Interference

Noise induced in interface cables can result in the printer receiving false data.
This condition may cause the printer to skip printing a label or lockup. Sources
of electromagnetic interference (EMI) and radio frequency interference (RFI) are
radio transmitters, ignition systems, and relays. To eliminate the effects of EMI
and RFI, use low capacitance, twisted pair, shielded cables. Route cables away
from sources of EMI and RFI such as large inductive motors or fluorescent
lighting ballasts. Do not run cables near AC power lines. If communication
cables must run near AC power lines, cross them at 90 degree angles. Eliminate
ground loops; they act as receiving antennas for RFI. Limit the number of
breaks (connectors) in the cable. It is possible to use a power line monitor, such
as the BMI 4800, to test for noise on the interface cable.

Ground Loops Between Equipment

Ground loops pick up RFI as well as generate their own noise in interface
cables. The recommended wiring of the interface cable calls for connecting
chassis ground (pin 1) between the host computer and the printer to ensure
that the chassis of both devices remains at the same electrical potential in the
event of a faulty ground in either device. This safety precaution will save
people from electric shock in the situation where they touch both the host
computer and the printer at the same time while there is a faulty ground in
either device. With this wiring, you would normally expect problems with
ground loops, but the printer, chassis ground, and signal ground are connected
to each other through a 10kΩ resistor, thus providing some ground loop
immunity.

4-14

If connections in the interface cable described above are discovered to cause
ground loop problems, disconnect the shield from the backshell at only the
printer, and sever the chassis ground (pin 1) connection between the host
computer and the printer. To ensure safety, double your efforts to guarantee
that both the host computer and the printer make a solid electrical and physical
connection to earth ground.

Inadequate Earth Ground

Poor grounds can cause fuses on equipment to blow and damage components.
The ground in the AC power receptacle must be a good, solid earth ground. Do
not rely on conduit for ground. The ground rod should penetrate the earth at
least 8 feet below the frost line. The soil should contain clay minerals; dry,
sandy soil does not provide a good ground. Ensure that all ground connections
from the service panel to the AC receptacle are solid and secure.

Troubleshooting

4

AC Power Problems (Surges, Sags, Spikes, Noise, and Outages)

Most environmental problems involve the AC power line. In the 3600 printer,
115V supply voltages can range from 90 to 132 VAC. Outside the U.S., 230V
supply voltages can range from 180 to 264 VAC. Voltage overages or
underages can result from poor utility regulation to in-plant loading of the
power service. Use a power line monitor, such as the BMI 4800, to look for
power service problems. To eliminate the effects of voltage overages and
underages, install an uninterruptible power supply (UPS) or install a dedicated
circuit for the printer and the host computer.

Intermittent power outages can be caused by a combination of vibration and
loose connections between the service panel and the AC receptacle. Check the
wiring to ensure that all connections are solid and secure. Use a power line
monitor to test for outages. To eliminate the effects of power outages, install a
UPS.

Impulse noise on the power line can also cause the printer to lockup or reset.
All Intermec products, including the 3600 printer, meet IEC 801, Surge and
Burst specifications. Impulses can range from 200 to 5000V and are caused by
lightning, switching operations, firing of SCRs, triacs, static discharge, and arc
welders. Use a power line monitor to verify the presence of impulse noise, and
use a spike suppressor to eliminate its effect.

Irregular sine waveforms on the AC power line can also affect printer
performance. They are caused by switching power supplies. Use a power line
monitor to verify the presence of irregular sine waveforms and use a power
line conditioner to eliminate their effects.

High frequency noise and hash riding on the AC waveform can affect printer
performance. They are caused by transmitters and ignition systems. Use an
oscilloscope to verify the presence of noise and hash. Install EMI/RFI filters to
eliminate their effects.

To troubleshoot environmental problems

1. Correlate an environmental event with the failure.

2. Check for static discharges.

3. Check for adequate grounding.

4. Check the AC power for proper level and purity.

5. Check for inductive motors, relays, or other spike inducing equipment on
the power line.

6. Exercise good judgment and common sense.

4-15

3600 Printer Maintenance Manual

Miscellaneous Problems

The following information identifies some possible printer problems and what
might be their cause.

• Problems with printer-to-computer communications, motor control, or

media advance may be caused by a faulty main PCB assembly.

• If information downloaded to the printer memory is lost after the printer is

powered off (lost data includes configuration setting changes reverting to
their factory defaults when power is cycled), the lithium battery may be
bad.

• The appearance of long white streaks in printed labels indicates a dirty

printhead or possible printhead failure.

• If you have problems with the bezel LEDs or the Feed/Pause button, you

may need to replace the bezel PCB assembly.

• If the printer no longer registers the use of marked label stock, you may

need to replace the label mark sensor.

• Light print on one side of a label can occur if the printhead is not making

even contact with the media. This condition can happen with any size
media, but is most common when using narrow labels where there is no
media between the printhead and the platen roller. Uneven lateral print
darkness may be eliminated by adjusting the bias screw.

• If the printer is no longer sensing when labels have been removed, you may

need to adjust or replace the label taken sensor.

• If the TTR takeup hub fails to roll up ribbon, you may need to replace the

upper drive belt and/or the TTR takeup clutch.

• If a ribbon fault occurs when the printer is in the TTR mode, you may need

to replace the TTR encoder sensor.

• If the liner takeup hub discontinues rolling up liner, you may need to

replace the liner takeup (lower) drive belt or clutch.

• If the platen roller does not turn but the liner drive roller does, you may

need to replace the platen roller gear.

• If none of the rollers turn, you may need to replace the stepper motor.

4-16

5

Remove and Replace Procedures

This chapter contains illustrated instructions for removing and replacing key

g

components of the 3600 printer.

Replacing Printer Components

When a printer component needs replacing, use the appropriate following
procedure. See Chapter 7, “Replacement Parts,” for a complete list of spare
parts.

After replacing a component, refer to Chapters 2 and 3 for the procedures to
complete the repair by ensuring that you leave the printer performing at its
optimum level.

Prior to taking any action, review all warnings, cautions, and procedures
associated with any component you intend to remove.

When performing any of the procedures in this chapter, heed the following
warnings and cautions at all times to avoid the consequence identified.

Remove and Replace Procedures

5

WARNING

CAUTION

CAUTION

Warnin

Always disconnect the power cord before removing the electronics
cover unless the procedure requires the unit be energized. Failure to
disconnect the power cord may result in injury or death due to
electric shock.

Caution

The printhead and integrated circuits on printer circuit boards in
this equipment are sensitive to damage by electrostatic discharge
(ESD). Prevent ESD by always wearing skin contact ground straps
firmly attached to the equipment metal base assembly when
working inside of the equipment housing. Failure to comply can
result in damage to components or the printhead.

Caution

Do not remove the motor plate or subplates. Changing the position
of the motor plate can alter factory alignment and cause ribbon
wrinkling or liner-stripping problems.

5-3

3600 Printer Maintenance Manual

g

Replacing the Lithium Battery

To replace the lithium battery, you will need the following parts and tools:

• 1.75AH 3.6V AA lithium battery, Intermec Part No. 586229

• ESD grounding strap

• #2 Phillips screwdriver

Warnin

There is danger of explosion if the battery is incorrectly replaced. Replace

WARNING

it only with the same or equivalent type battery recommended by the
manufacturer. Discard used batteries according to the manufacturer’s
instructions.

Il y a danger d’explosion s’il y a remplacement incorrect de la batterie.
Remplacer uniquement avec une batterie du même type ou d’un type
recommandé par le constructeur. Mettre au rébut les batteries usagées
conformément aux instructions du fabricant.

To replace the lithium battery

Note: The printer will lose data if the battery fails or is removed. Before removing the
battery, upload and save the fonts, formats, pages, graphics, and configuration settings.

1. Switch off the printer power and remove the power cord, the media cover,
and the electronics cover.

2. Remove the old battery and install the new battery, matching the (+) and (-)
ends of the battery with the (+) and (-) signs on the main PCB.

Lithium
battery

J9

Main PCB

Power

Alert

Empty/Pause

Feed/Pause

Intermec

3600

5-4

3600M.042

3. Install the covers and power cord. Check the printer for proper operation.

Replacing the Printhead

To replace the printhead, you will need the following parts and tools:

• 6.6-inch 5 mil printhead, Intermec Part No. 061611S-001

• ESD grounding strap

• Medium straight-slot screwdriver

To replace the printhead

1. Switch off the printer power and remove the power cord.

2. Remove the media cover.

3. Raise the printhead. Remove media and ribbon if loaded.

4. Release the locks on the printhead cable by pressing in on each side of the
cable connector. Remove the printhead cable.

Remove and Replace Procedures

5

Note: If you need slack to separate the printhead and cable, unplug the cable from

the main PCB and pull some of it through the cutout in the main deck plate.

Printhead
retaining
screw

Printhead

Power

Alert

Empty/Pause

Feed/Pause

IntermecIntermec

Straight slot
screwdriver

3600

Power

Alert

Empty/Pause

Feed/Pause

IntermecIntermec

3600

Cable
connector

Printhead
cable

3600M.043

5-5

3600 Printer Maintenance Manual

5. Use a straight-slot screwdriver to loosen the printhead retaining screws,
located in the center of the printhead heatsink. The screw is easier to loosen
if you place one of your fingers underneath the printhead, between the
printhead and the platen roller. Pull the printhead away from the printer
(since it is a tight fit, you may need to pull it out from the outboard side
rather than from the front).

6. Replace the printhead and cable and tighten the printhead retaining screws.

7. Reload media (and ribbon if used) and lower the printhead.

8. Install the media cover and the power cord and check the printer for proper
operation.

Replacing the Bezel PCB

To replace the bezel PCB, you will need the following parts and tools:

• Bezel PCB assembly, Intermec Part No. 059052S-001

• ESD grounding strap

• #1 and #2 Phillips screwdrivers

To replace the bezel PCB assembly

1. Switch off the printer power and remove the power cord.

2. Remove the media cover and the electronics cover.

3. Unplug the bezel PCB assembly from the main PCB and remove the five
screws that hold the front bezel cover to the printer.

Power

Alert

Empty/Pause

Feed/Pause

IntermecIntermec

3600

5-6

Front bezel
cover

3600M.044

Remove and Replace Procedures

4. Lift the front bezel cover away from the printer and lay it on a flat surface.

5. Use the #2 Phillips screwdriver to remove the two screws that hold the
bezel PCB/cover plate assembly to the front bezel cover.

6. Being careful not to break the switch stem or the button cap, pull the
Feed/Pause button cap off of the switch on the bezel PCB. Retain the
yellow button cap for installation onto the replacement bezel PCB.

7. Use the #1 Phillips screwdriver to remove the two screws securing the bezel
PCB to the front cover plate.

Front cover

Bezel PCB
assembly

Yellow
button
cap

plate

5

Front bezel
cover

8. Use the #1 Phillips screwdriver to attach the replacement bezel PCB to the
front cover plate.

9. Carefully press the yellow button cap removed in Step 6 onto the switch on
the replacement bezel PCB.

10. Attach the bezel PCB front cover plate assembly to the front bezel cover.

11. Reattach the front bezel cover to the printer. Ensure that the media access
door operates properly (snaps firmly shut) after the front bezel cover is
installed. Connect the cable.

12. Install the electronics cover, the media cover, and the power cord, and
check the printer for proper operation.

3600M.045

5-7

3600 Printer Maintenance Manual

Replacing the Main PCB

To replace the main PCB, you will need the following parts and tools:

• 3600 main PCB assembly, Intermec Part No. 061591S-005 or 06159E-005

• ESD grounding strap

• #2 Phillips screwdriver

To replace the main PCB assembly

1. Switch off the printer power and remove the power cord, the media cover,
and the electronics cover.

2. Unplug all of the cables from the main PCB and remove the seven screws
securing the main PCB to the printer to remove the main PCB. Do not place
the printer on its side as this may disturb alignments.

Main PCB
assembly

J9

Power

Alert
Empty/Pause

Feed/Pause

Intermec

3600

3600M.046

3. If the main PCB you are replacing has the 512K SRAM memory expansion
chip, verify that the new main PCB is similarly equipped. If it is not,
carefully unplug the existing 512K chip and plug it into the new main PCB
before installing it.

4. If the main PCB you are replacing has a Kanji/Katakana option PCB
installed, use the next procedure to relocate the Kanji/Katakana option PCB
to the new main PCB before installing it.

5. Install the new main PCB, securing it with the seven screws removed in
Step 3, and connect all of the cables.

5-8

6. Install the electronics cover, the media cover, and the power cord, and
check the printer for proper operation.

Remove and Replace Procedures

Replacing the Kanji/Katakana Option PCB

To replace a Kanji/Katakana PCB, you will need the following parts and tools:

• 3600 Kanji/Katakana PCB, bitmap font, Intermec Part No. 060689-001 or

3600 Kanji/Katakana PCB, outline font, Intermec Part No. 060690-001

• ESD grounding strap

• #2 Phillips screwdriver

To replace the Kanji/Katakana PCB

1. Switch off the printer power and remove the power cord, the media cover,
and the electronics cover.

2. Remove the screws that secure the Kanji/Katakana PCB to the main PCB.

5

PCB stacking
spacer

Main PCB
assembly

Hex standoff

Kanji/Katakana PCB

Stepper
Motor

J9

J1

Power

Alert

Empty/Pause

Feed/Pause

IntermecIntermec

3600

J2

3600M.047

5-9

3600 Printer Maintenance Manual

3. Unplug the Kanji/Katakana PCB from the main PCB using a gentle rocking
motion while pulling it away.

4. Install the new Kanji/Katakana PCB onto the main PCB, making sure the
pins are properly aligned with the connector and that the Kanji/Katakana
PCB is fully seated before tightening the screws.

5. Install the electronics cover, the media cover, and the power cord, and
check the printer for proper operation.

Replacing the Label Mark Sensor

To replace the label mark sensor, you will need the following parts and tools:

• Label mark sensor cable assembly, Intermec Part No. 061578-001

• Roller alignment tool, Intermec Part No. T43150

• ESD grounding strap

• #1 and #2 Phillips screwdriver

To replace the label mark sensor

1. Switch off the printer power and remove the power cord.

2. Remove the media cover, the electronics cover, and the front bezel cover
(refer to “Replacing the Bezel PCB” earlier in this chapter).

3. Raise the printhead. Remove media and ribbon if loaded.

4. Remove the screws securing the lower outboard plate to the printer and
pull it away from the printer. Retain the tear bar and tear bar support.

Lower outboard
plate

Tear bar

Tear bar
support

5-10

3600M.048

Remove and Replace Procedures

5. Disconnect the label mark sensor cable from the main PCB, remove the
cable from the two plastic clips, and push it through the cutout in the main
deck plate. Slide the sensor out from the extrusion. Remove the cable from
the plastic cable clip on the extrusion.

Label mark
sensor

5

6. Insert the new label mark sensor into the extrusion. Route the cable
through the plastic cable clip on the extrusion and through the cutout in the
main deck plate, and then plug it into the main PCB. Secure the cable in
place by inserting it into the two cable clips. Any slack in the cable should
be arranged between the sensor and the cable clip on the extrusion. There
should be no slack cable on the electronics side of the printer. Make sure
the cable is secure and not contacting any moving parts.

7. Reassemble the tear bar and bar support and install the lower outboard
plate, capturing the tear bar, liner drive roller, and platen roller.

Note: Use the roller alignment tool during reassembly for proper alignment of the

outboard plate.

8. Reattach the front bezel cover. Ensure that the media access door operates
properly (snaps firmly shut) after the front bezel cover is installed.

9. Reload media (and ribbon if used) and lower the printhead.

10. Install the electronics cover, the media cover, and the power cord, and
check the printer for proper operation.

3600M.049

5-11

3600 Printer Maintenance Manual

Replacing the Label Taken Sensor

To replace the label taken sensor, you will need the following parts and tools:

• Label taken sensor cable assembly, Intermec Part No. 059496-002

• ESD grounding strap

• #1 and #2 Phillips screwdriver

To replace the label taken sensor

1. Switch off the printer power and remove the power cord.

2. Remove the media cover, the electronics cover, and the front bezel cover
(refer to “Replacing the Bezel PCB” earlier in this chapter).

3. Raise the printhead. Remove media and ribbon if loaded.

4. Disconnect the label taken sensor cable from the main PCB, remove the
cable from the two plastic clips, and push it through the cutout in the main
deck plate. Slide the sensor housing away from the main deck plate.

Main
deck
plate

Label taken
sensor

3600M.050

5. Install the new sensor, routing the cable through the cutout in the main
deck plate and plugging it into the main PCB. Place the cable in the plastic
clips with the black sleeve positioned as close as possible to the sensor end.

6. Reattach the front bezel cover. Ensure that the media access door operates
properly (snaps firmly shut) after the front bezel cover is installed.

5-12

7. Reload media (and ribbon if used) and lower the printhead.

8. Install the electronics cover, the media cover, and the power cord, and
check the printer for proper operation.

Replacing the Label Gap Sensor

To replace the label gap sensor, you will need the following parts and tools:

• Label gap cable assembly, Intermec Part No. 059495-001

• ESD grounding strap

• Small straight-slot screwdriver

• 12-inch shank #2 Phillips screwdriver

To replace the label gap sensor

1. Switch off the printer power and remove the power cord, the media cover
and the electronics cover.

2. Raise the printhead. Remove media and ribbon if loaded.

3. Disconnect the label gap sensor cable from the main PCB.

Remove and Replace Procedures

5

Gap sensor
cable

Label gap
sensor

Upper and lower
media guide assembly

4. Remove the three screws securing the upper/lower media guide assembly
to the main deck plate.

5. Slide the upper media guide outward to separate it from the rest of the
assembly.

3600M.051

5-13

3600 Printer Maintenance Manual

Label
gap
sensor

Lower
media
guide

Upper
media
guide

Label gap
sensor
housing

Locking
tabs

Lift spring

3600M.052

6. Use a small straight-slot screwdriver to lift up on each of the two molded
tabs that secure the label gap sensor. Slide the label gap sensor from its
housing and replace it with the new label gap sensor. The label gap sensor
should snap into place.

7. Slide the upper media guide plate back together with the lower media
guide plate.

8. Route the label gap sensor cable through the cutout in the main deck plate
and reattach the media guide assembly to the frame. Be sure that the media
brake arm does not rub on the upper media guide and that the sensor cable
is not contacting any moving parts.

9. Attach the label gap sensor cable to the main PCB.

10. Reload media (and ribbon if used) and lower the printhead.

11. Install the electronics cover, the media cover, and the power cord, and
check the printer for proper operation.

5-14