Lexmark 7000 Color Jetprinter Course Information

Course Information

Introduction

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Course Information

Introduction

This service training module, along with the product

specific service manual, can be used as an outline for

training on current Lexmark personal or desktop

printers.

Cross references to the service manual for new

products are placed at selected points throughout the

module lessons. The cross references let you view

parts, theory of operation, adjustments, and so on, at

the click of your mouse. When you have finished,

simply use your right mouse button to return to the

service training lesson.

The lessons in this course will be updated as

necessary to include new technology, or unique printer

mechanisms that may require specialty training.

Use the

Tools

pull down menu, Find and Match Whole

Word Only to locate a specific subject.

For example:

7000 Color Jetprinter

Course Information

Lesson Outline

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Lesson Outline

This course is divided into the following lessons:

• Covers, Drive, and Component Location

• Paper Path

• Print Process

• Electronics

• Diagnostics

•Service Tips

• Course Exam

Course Information

Lesson Objectives

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Lesson Objectives

Upon completion of these lessons, along with your

prior knowledge and appropriate documentation, you

will be able to:

• Locate and identify all major components.

• List the motors used in the printer and describe

their function.

• Describe briefly how paper is moved through the

paper path.

• Describe the purpose of any paper sensors or

forms flag.

• Describe how text, or an image, is placed on paper

during printing.

• Perform service diagnostics.

• Verify correct machine operation.

Course Information

Prerequisite

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Prerequisite

Lexmark service training courses are developed

assuming the student has these entry level skills:

• Capable of using common hand tools, such as

screwdrivers, nutdrivers, wrenches, in the

mechanical assembly and disassembly of non-

complex electronic equipment.

• Basic understanding of electricity including current,

voltage, and resistance.

• Use of an analog or digital multimeter in the

measure of voltage, current, and resistance.

• Understand the safe procedures relating to the

service of devices powered by AC line voltages.

• Ability to follow non-complex procedures (written

and graphic) to isolate product problems.

• Use of special tools and instructions (written and

graphic) in the adjustment of electro-mechanical

devices such as diskette drives and printers.

• Proper application of lubricants and cleaning

materials for electro-mechanical devices.

• Ability to type data on a keyboard.

• Ability to interpret data (audible and visual).

• Understand the safe use of hand tools and a

multimeter.

• General industry information, for example, A+

certification.

Course Information

Materials Required

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Materials Required

•

One formatted student diskette

to record each

technician’s course exam results. The diskette is

not provided, but

student diskette labels are

enclosed.

The mailing address and return

instructions are listed after successfully completing

the course exam.

•

Service Manual

for the product for which you want

to receive Lexmark certification. Service Manuals

are available on the Service Library CD. You may

want to print your own copy of a service manual

from the Service Information and Training CD, or

you may order books and other material from

Lexmark. To order material - call 1 - 800 - 553 -

9727 (U.S.)

During the course exam, you may use the service

manual to answer technical questions relating to meter

readings or connector and pin numbers.

You will be using the service manual extensively to

complete service training

.

Please refer to the service manual as necessary for:

• Removal and replacement steps

• Diagnostic steps

• Parts Catalog (relationship of parts)

• Voltage or Ohms check

Refer to the service manual “Table of Contents” for

location of connectors and pin numbers.

Course Information

Training Equipment

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Training Equipment

•

It is highly recommended, but not required,

that

you have a training machine available for the

product for which you want to receive Lexmark

certification.

PC Hardware and Software

Minimum

• 486processor-based personal computer.

• Microsoft Windows 3.1, Windows 95, or Windows

NT 3.51 or later.

• 8 MB of RAM (16MB for Windows NT)

• VGA or better display card.

• CD-Rom Drive.

• 5 MB hard disk space, plus 7 MB additional

temporary disk space available during installation.

Recommended

• Pentium processor-based personal computer.

• Windows 95 or Windows NT.

• 16 MB of RAM (24 for Windows NT).

• Color palette supporting at least 256 colors.

• SVGA or better display card.

• CD-Rom Drive.

• 5 MB hard disk space, plus 7 MB additional

temporary disk space available during installation.

Note:

Future releases may include video clips and

sound files that require additional hard disk space

(for the software to run them) and a Windows

compatible sound card.

Course Information

Special Tools

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Special Tools

Refer to the service manual for special tools,

equipment, and so on.

Course Information

Course Completion Time

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Course Completion Time

The estimated course completion time depends

primarily upon the student skill level and machine type.

You may need to schedule more time if you are a first

time user of Lexmark service training, or this is your

first service training course.

Experience personnel may use the following outline for

scheduling training time:

•

Inkjet printers

a.

1

to

3

hours

•

Color Printing

b.

1

to

2

hours

Course Information

Course Exam

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Course Exam

Experienced personnel may elect to go directly to the

certification exam, if you met all of the following

conditions:

• Have successfully completed at least one previous

Lexmark service training course in the product

category for which you want to receive Lexmark

certification.

Note:

If you want to skip the inkjet printer service

training materials and go directly to an exam, you

should have successfully completed a previous

Lexmark inkjet printer service training course.

• Have experience servicing Lexmark printers.

• Have experience using Lexmark service manuals.

• Have experience using a meter and taking Ohms

and Voltage measurements.

• Have experience locating connectors and

identifying connector pin numbers.

• Have completed the color printing lessons and

understand how printers place color on paper.

If you met all of these conditions and want to skip

directly to the exam, proceed to the inkjet course exam

section. Course exams are listed by machine type.

Introduction

Inkjet Printers

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Introduction

Inkjet Printers

An inkjet printer is an electro-mechanical printer that

forms characters on print media (paper, transparency,

etc.) using a printhead and liquid ink. The printhead

uses small heater plates and nozzles to control ink flow

and the formation of characters on the print media.

Lexmark combines the printhead assembly and ink

supply into one unit called a print cartridge.

The monochrome print cartridge contains black ink and

more nozzles than a color print cartridge. The color

print cartridge contain three colors of ink: cyan,

magenta and yellow.

Lexmark inkjet printers provide high quality text and

graphic printing. Lexmark printers can print on

envelopes, single sheet paper labels, 3 x 5 index cards,

and transparencies.

Introduction

New Products

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New Products

This is Lexmark’s new 7000 Color Jetprinter (Machine

Type 4092). The 7000 Color Jetprinter is a personal,

near laser-quality inkjet printer.

Dual printheads provide color and true black printing

without changing printheads. The black print cartridge

has a total of 208 nozzles. The color print cartridge

has a total of 192 nozzles and installs on the right.

• The 4092 can print in ultra high quality mode of

1200 x 1200 dpi

.

• The printer is capable of printing in two directions

from either cartridge.

Let’s look at removing covers.

Covers, Drive, and Component Location

Introduction

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Covers, Drive, and

Component Location

Introduction

This lesson covers three categories:

• Cover Removals

• Drive Components

• Component Locations

We include step by step examples of removing covers

and show you some examples of where to look in your

printer for various printer drive components.

It is highly recommended, but not required,

that you

have a training machine available for the product for

which you want to receive Lexmark certification.

Removing the machine covers at this time is necessary

to locate and identify sub assemblies called out in this

lesson.

Covers, Drive, and Component Location

Covers

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Covers

Note:

In this example, we are using the Color Jet

Printer 4077. Be sure to use the appropriate

service manual for your printer.

For example, if you are training on the Lexmark

Color jet printer machine type 4077, you must use

the 4077 Service Manual. In this case, there are

different models of the 4077 color printer. The Lex-

mark WinWriter 150c (marketing name) is machine

type 4077, model 001. Later, Lexmark announced

the 2050 Color Jetprinter (marketing name),

machine type 4077 model 201. Therefore, ensure

you have the correct level of service information for

the machine type and model for which you are tak-

ing training or providing customer service.

Covers, Drive, and Component Location

Covers

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Removing an inkjet printer cover may be as simple as

prying gently on two plastic latches.

Insert a small screwdriver into slot A on both sides of

the printer and gently press just enough to release the

cover latch.

Slide the cover off the machine.

Covers, Drive, and Component Location

Covers

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Release the rear cover latches in the same manner

and slide the cover off the machine.

Covers, Drive, and Component Location

Drive and Component Location

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Drive and Component Location

We have removed the printer frame and carrier

transport assembly so you can see the paper feed

motor.

The purpose of the paper feed motor is to feed paper

from the automatic sheet feed through the printer's

paper path.

Note:

All Lexmark inkjet printers use a stepper

motor for feeding paper.

Paper Feed

Motor

Covers, Drive, and Component Location

Drive and Component Location

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*

In this illustration, we have separated the frame and

carrier transport assembly from the base assembly to

aid in parts identification.

You can also see the location of the paper feed motor

and the carrier transport motor.

The purpose of the carrier transport motor is to move

the carrier to the print position and to the maintenance

station at the appropriate time.

Paper Feed Motor

Carrier Transport Motor

Covers, Drive, and Component Location

Drive and Component Location

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As the carrier transport motor turns, it moves the

carrier left or right using the carrier belt.

Some Lexmark inkjet printers, for example, 2050, 150c

and 2070 use a DC motor and an encoder strip with an

encoder board. As the carrier moves laterally, the

encoder board is able to read the encoder strip to keep

track of the carrier position.

Other Lexmark printers use a home position sensor

and a stepper motor. The initial carrier position is

determined by the home position sensor. As the carrier

moves from the home position, the stepper motor

keeps count of the carrier position in increments of

rotation.

Carrier Transport

Motor

Encoder

Strip

Covers, Drive, and Component Location

Drive and Component Location

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Lexmark inkjet printers use either a mechanical

maintenance station or a motor driven assembly to

wipe and cap the printhead.

The maintenance station has two functions:

• It seals the printhead nozzles using caps to

protect the nozzles from damage or drying

between print jobs.

• It cleans the printhead nozzles during printing

by wiping the nozzles and providing a place for

all nozzles to fire. The wiping action occurs

before firing all nozzles.

Seal Action

As the carrier moves to the right, a slot on the bottom

of the carrier engages a tab on the maintenance

station causing the caps to rise and seal the printhead

nozzles.

Maintenance

Station

Covers, Drive, and Component Location

Drive and Component Location

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Clean Action

As the carrier moves to the left, the printhead nozzles

are uncapped and wipers clean the nozzles.

• The wipers clean the printhead nozzles only when

the carrier moves to the left.

• There should be no wiping action when the carrier

moves to the right.

• The wipers are lowered as the carrier leaves the

maintenance station, then all nozzles fire.

Note: A worn wiper can cause degraded print. A

worn cap can cause the nozzles to dry and clog.

Maintenance

Station

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Lexmark 7000 Color Jetprinter Course Information

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