Epson EU-T432 Technical Manual

Confidential

Technical manual

Thermal printer unit

EU-T432

English

4013753

Issued Date

200 , ,

Issued by

Rev. A i

Confidential

EU-T432 Technical Manual

CONFIDENTIALITY AGREEMENT

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must keep such information con fident ial. If the us er is a busin ess en tity or org aniz ation, you mus t limit disclos ure
to those of your employees, agents and contractors who have a need to know and who are also bound by
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❏ On the earlier of (a) termination of your relationship with Seiko Epson, or (b) Seiko Epson’s request, you must

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immediately notify Seiko Epson. You agree to give Seiko Epson reasonable cooperation and assistance in the
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❏ You may use confidential information only for the purpose of operating or servicing the products to which the

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INFORMATION ON THE DOCUMENT, INCLUDING (WITHOUT LIMITATION) ANY WARRANTY OF TITLE
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Cautions

❏ Should any discrepancy exist between the contents of this document and the provisions of the "Master Contract"

or "Specifications," the latter shall take precedence over the former.

❏ We shall not be responsible for any troubles that might occur from the application of this document by customer

either to a machine other than this product, or to a drive circuit or other device that is the industrial property of a
third party.

❏ No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any

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❏ Neither Seiko Epson Corporation nor its affiliates shall be liable to the purchaser of this product or third parties

for damages, loss es, c osts, or expe nses i ncu rred by the purcha se s or thi rd par ties as a resu lt of: acci dent, m isus e, or
abuse of this product or unauthoriz ed modifi cation s, repairs , or a lterations to th is product , or (excludin g the U. S.)
failure to strictly comply with Seiko Epson Corporation’s operating and maintenance instructions.

❏ Seiko Epson Corporation shall not be liable against any damages or problems arising from the use of any options

or any consumable products other than those designated as Original EPSON Products or EPSON Approved
Products by Seiko Epson Corporation.

ii Rev. A

Confidential

Trademarks

EPSON® is a registered trademark of Seiko Epson Corporation.
General Notice: Other product and company names used herein are for identification purposes only and may be

trademarks of their respective companies.

Points That Must Be Observed

To Assure Product Safety

To assure the safe operation of this product, carefully observe the specifications as well as the notes provided below.
Seiko Epson Corporation will not bear any responsibility for any damage or injuries arising from use of this product

that is not in accordance with the specifications and the notes provided below.

Notes on Head Control

❏ The conditions setting forth the maximum time power can be applied (and the maximum voltage that can be

applied) to electronic components such as the head, motor, and magnets must be observed.

If the maximum time power can be applied (or the maximum voltage that can be applied) is exceeded, the components
mentioned above could overheat and start a fire or beg i n to smoke.

❏ Always include protective circuitry governing the length of time power is applied and the amount of current that

is applied when designing the drive and control circuits for the head, motor, magnets, etc.

If protective circuitry is not included, misoperation of the printer control circuits could cause the comp onents mentioned
above to overheat and begin to smoke or burn.

Notes on Handling

❏ The case must be designed so that movable parts, such as gears, are not exposed.

Touching moving parts could cause a laceration or other injury.

Rev. A iii

Confidential

EU-T432 Technical Manual

About This Manual

This manual consists of the following chapters.

Symbols

Notes in this manual are identified by their level of importance, as defined below.

CAUTION:

Observe cautions to avoid minor injury to yourself, damage to your equipment, or loss of
data.

Note:

Notes have important information and useful tips on the operation of your equipment.

Chapter 1
Features and Specifications

This chapter contains features and general specifications for
the EU-T432.

Chapter 2
Operation Principle

This chapter contains the outline and principles of
mechanisms.

Chapter 3
Handling

This chapter contains precauti ons on handling, pa per loading
and unloading and removing jammed paper.

Chapter 4
Maintenance

This chapter contains information on cleaning, inspection,
lubrication, and tools.

Chapter 5
Repair

This chapter contains repair levels, repair procedures, and
troubleshooting.

Chapter 6
Assembly and Disassembly

This chapter contains assembly and disassembly for the unit s
and modules of the EU-T432.

Appendix

The appendix contains the exploded and adhesive diagrams
of the EU-T432.

iv Rev. A

Confidential

Contents

About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Chapter 1

Features and Specifications

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

System Configuration and Module Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Module Combinations and Specifications: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Chapter 2

Operation Principles

Outline of Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Paper Roll Supply Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Paper Holding Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Paper Load-absorbing Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Paper NE Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Printer Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Drive Force Transmission Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Paper Feed Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Printing Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Paper Guide Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Detector Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Autocutter Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Cut Sheet Presenter Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Paper Carrying Operation (With a Loop) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Paper Carrying Operation (Without a Loop) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Detector Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Control Circuit Board Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

DIP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Memory Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Chapter 3

Handling

Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Transport Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Carrying Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Installation Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Handling Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Storage Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Opening and Closing Modules, Unit and Part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Paper Roll Supply Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Platen Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Cut Sheet Presenter Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Paper guide, upper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Loading and Removing Paper roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Loading a Paper roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Removing Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Removing Jammed Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Removing Jammed Paper From the Cut Sheet Presenter Module . . . . . . . . . 3-9

Removing Jammed Paper From the Printer Module . . . . . . . . . . . . . . . . . . . . 3-10

Paper NE Detector Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Performing the Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Self Test End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Rev. A v

Confidential

EU-T432 Technical Manual

LED Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

POWER LED (Power Supply Error): Green . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

PAPER LED (Paper-End Error): Red . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

ERROR LED (Error): Red . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Chapter 4

Maintenance

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Thermal Head Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Removing Stains (Except for the Thermal Head) . . . . . . . . . . . . . . . . . . . . . . . 4-2

Removing Dirt and Dust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Removing Foreign Matter When the Cutter Locks . . . . . . . . . . . . . . . . . . . . . . 4-2

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Daily Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Periodic Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Lubricant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Lubrication Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Lubrication Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Lubricant List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Chapter 5

Repair

Repair Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Repair Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Chapter 6

Assembly and Disassembly

Small Parts Abbreviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Installation of the Printer Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Pre-assembly A: Paper guide,straight, back unit . . . . . . . . . . . . . . . . . . . 6-3

Pre-assembly B: Frame, platen, straight unit, B . . . . . . . . . . . . . . . . . . . . 6-4

Pre-assembly C: Cutter motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Pre-assembly D: Cutter, cover sub-unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Pre-assembly E: Cutter unit, B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

Pre-assembly F: Black mark detector sub-assembly (option) . . . . . . . . . 6-13

Main Assembly A: Motor, paper feed, receipt, B and Platen detector . 6-14
Main Assembly B: Paper guide, straight, front and Paper guide, straight, back unit

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

Main Assembly C: Frame, platen, straight unit . . . . . . . . . . . . . . . . . . . . 6-18

Main Assembly D: Thermal print head assembly. . . . . . . . . . . . . . . . . . . 6-20

Main Assembly E: Plate, pressure spring. . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

Main Assembly F: Fixing plate, the Gear, reduction and Gear, idler . . 6-23

Main Assembly G: Cutter unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24

Assembly H: Arranging the lead wires . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25

Main Assembly I: Cable, printer and Cable, head . . . . . . . . . . . . . . . . . . 6-26

Assembly J: Black mark detector Adjustment . . . . . . . . . . . . . . . . . . . . . . 6-27

Main Assembly K: Cover, cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28

Main Assembly L: Cover, gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-29

vi Rev. A

Confidential

Installation of the Other Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30

Pre-assembly A: Frame, paper supply assembly . . . . . . . . . . . . . . . . . . . . 6-30

Pre-assembly B: Roll paper holder unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34

Pre-assembly C: Roll paper supply module . . . . . . . . . . . . . . . . . . . . . . . . 6-39

Pre-assembly D: Presenter table assembly . . . . . . . . . . . . . . . . . . . . . . . . . 6-40

Pre-assembly E: Presenter frame, right assembly . . . . . . . . . . . . . . . . . . . 6-41

Pre-assembly F: Presenter frame, left assembly . . . . . . . . . . . . . . . . . . . . . 6-42

Pre-assembly G: Paper guide assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43

Pre-assembly H: Cutting sheet presenter module . . . . . . . . . . . . . . . . . . . 6-44

Main Assembly A: Printer module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-49

Main Assembly B: Cut sheet presenter module . . . . . . . . . . . . . . . . . . . . . 6-52

Main Assembly C: Roll paper supply module . . . . . . . . . . . . . . . . . . . . . . 6-53

Main Assembly D: Control circuit board and Cover, circuit boards

upper/ lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-54

Main Assembly E: Roll paper shaft assembly . . . . . . . . . . . . . . . . . . . . . . 6-57

Appendix

EU-T432 Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Printer Module Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Cut Sheet Presenter Module Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Roll Paper Supply Module Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

EU-T432 Lubrication Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Printer Module Lubrication Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Cut Sheet Presenter Module Lubrication Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Roll Paper Supply Module Adhesive Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Rev. A Features and Specifications 1-1

EU-T432 Technical Manual

Confidential

Chapter 1

Features and Specifications

Features

The EU-T432 is designed to be used for kiosks and cash dispensers. The featur es of th e EU-T43 2
are as follows:

❏ High speed receipt issuing: 150 mm/s {5.9"/s} maximum
❏ High reliability: 300,000 receipt issue
❏ Length of receipt: 228.4 mm {9"} maximum

(When the EU-T432 is equipped with an optional loop guide: 600 mm {23.6"}

❏ Available for large paper roll core dimensions:

203 mm {8"} diameter maximum

❏ Supports ESC/POS



equivalent commands

❏ Able to print bar codes (fence and ladder) and graphics
❏ Options available for all models:

• Japanese Kanji model: Supports JIS Level 1 and 2

• Simple Chinese model: Supports GB50007-85

• Traditional Chinese model: Supports BIG5 Level 1 and 2

• Korean model: Supports C-6501C

❏ Driver and status monitor are available.

1-2 Features and Specifications Rev. A

Confidential

System Configuration and Module Names

The whole systems is called the “EU-T432.” The EU-T432 consists of four modules and the
configuration of the modules are shown below:

Figure 1-1 EU-T432 appearance

paper roll supply modu le

cut sheet presenter module

control circuit board
module

printer module

Rev. A Features and Specifications 1-3

EU-T432 Technical Manual

Confidential

Specifications

The basic specifications of the EU-T432 are shown below. Refer to the specifications for the
EU-T432 issued by Seiko Epson Corporation for more details.

Table 1.1 Specifications

Item

Specification

Paper roll Outside diameter

152.4 mm {6"}
(When equipped with an optional part: 2 0 3 mm {8"))

Paper width

79.5 ± 0.5 mm {3.13 ± 0.02"}

Paper carrying speed

150 mm/s {5.9"/s} maximum

Paper length to be
presented

Issuing the cut sheet
(Receipt printing)

When the cut sheet is looped: 76.2 to 228.6 mm {3 to 9"}
When equipped with an optional loop guide:

76.2 to 600 mm {3 to 23.6"}
When the cut sheet is not looped:

76.2 to 3000 mm {3 to 118.1"}

Print speed

150 mm/s {5.9"/s} maximum

Print width

72 mm {2.84"} maximum (recommended)

Reliability Receipt printing

300,000 times

Printer

Mechanism: 15,000,000 lines
Thermal head: 100 km {62.14 miles},

100 million pulses

Paper roll Specified thermal paper

Original paper No.: P350 KSP
Original paper No.: TF50KS-E NIPPON PAPER

INDUSTRIES CO.,LTD

Original paper No.: PD160R

OJI PAPER MFG.CO., LTD

Original paper No.: TF11KS-ET NIPPON PAPER

INDUSTRIES CO.,LTD

Original paper No.: TF51KS-X1 NIPPON PAPER

INDUSTRIES CO.,LTD

Original paper No.: PD200N

OJI PAPER MFG.CO., LTD

Original paper No.: AFP234 MITSUBISHI PAPER MILLS

CO., LTD
A different paper type may give a different print
quality.

Paper thickness 60 to 150 µm

If the paper thickness is more than 120 µm, the paper
loop must not be used.

1-4 Features and Specifications Rev. A

Confidential

Module Combinations and Specifications:

Environmental condition Operating temperat ure 0 to 50°C

Operating humidity 10 to 80% RH

Table 1-2 Module Combinations and Specifications

Item

6 inch type

8 inch type

Combination of
each module

Paper roll module

Yes Yes

Printer module

Yes Yes

Control board module

Yes Yes

Cut sheet presenter
module

Yes Yes

Paper supply spacer

 Yes

Mass

Approximatel y 3.8 kg

{8.38 lb}

Approximatel y 3.9 kg

{8.60 lb]

External dimensions (W × D × H): mm

194.7

×

170.6

×

300

{7.7

×

6.7

×

11.8"}

194.7 × 170.6

×

350

{7.7 × 6.7 × 13.8"}

Table 1.1 Specifications

Item

Specification

80

50

10
0

0 5 10 20 30 40 5550

34°C 80%

40°C 58%

50°C 35%

Print quality is
guaranteed.

+

Operation is
guaranteed.

Rev. A Operation Principles 2-1

EU-T432 Technical Manual

Confidential

Chapter 2

Operation Principles

Outline of Mechanism

The EU-T432 consists o f f our mo dule s: the paper rol l suppl y modu le, t he pri nter module, the cut
sheet presenter module, and the control circuit board module.

Paper Roll Supply Module

The paper roll supply module holds a large diameter paper roll and gu ides the paper to the
printer mod ule. This modu le consists of the paper holding part, the paper load-absorbing
mechanism, and the paper near-end detector. The appearance of this module is shown below.

Figure 2-1 Paper roll supply module appearance

lever, open

paper NE detector

shaft, roll paper

holder, roll paper A

holder, roll paper shaft

guide, roll paper tensio n

plate, opening and
shutting

holder, roll paper shaft

plate, roll paper guide

2-2 Operation Principles Rev. A

Confidential

Paper Holding Section

The paper roll holding mechanism is a shaft support type. The paper roll holding section
consists of the removable

shaft, roll paper

, the

holder, roll paper A

(for the inner diameter of

the paper core: 25.4 mm {1 i nch}) that fits the size of the paper roll core used, the

holder, roll

paper shaft

that supports the

shaft, roll pap er

and the

plate, roll paper guide

that holds the

sides of the paper roll.
The paper holding sectio n turn s on a fi xed screw sec tion so that t he paper holding sectio n can be

opened and closed. The paper holding section can be opened by pulling down the

plate,

opening and shutting

while holdin g down the

lever, open

. When closing the paper holding

section, pull up the

plate, opening and shutting

causing the

lever, open

to be locked

automatically; then the paper holding section is closed securely.

Note:

If the paper inner core dimension differs from the

holder, roll paper A

due to the paper thickness, you

can replace it with an optional holder, a

holder, roll paper B

(for the inner diameter of the paper core:

50.8 mm {2 inch}) or a

holder, paper roll C

(for the inner diameter of the paper core: 76.2 mm {3

inch}).

Paper Load-absorbing Mechanism

The paper load-absorbing mechanism consists of the

guide, roll paper tension

that receives
the paper tension. Using the paper tensile force generated when feeding the paper, this
mechanism oscillates the

guide, roll paper tension

and reduces the paper feeding load due to

inertia of the paper roll.

Paper NE Detector

The

paper NE detector

has two kind of detections, the primary NE detection and the
secondary NE detection. The primary NE detection can detect the amount remaining on the
paper roll using a reflecting photo sensor. After the primary NE detection, the secondary
detection can be used to return the status when the paper is fed to the length specified by the
memory switch setting. (See SW No. 2, 3 in Table 2-10 on page 2-20.)

The

paper NE detector

is mounted on the

frame

and is secured with a screw. The position of

the

paper NE detector

can be altered to adjust the setting for the amount remaining on the

paper roll.

Rev. A Operation Principles 2-3

EU-T432 Technical Manual

Confidential

Printer Module

The printer module has a printing mechanism with the paper feeding and a cutting mechanism
to cut the paper.

The printer consists of the following six mechanisms: the drive force transmission mechanism,
the paper feed mechanism, the printing mechanism, the paper guide mechanism, the detector
mechanism, and the autocutter mechanism.

Figure 2-2 Printer module appearance

Drive Force Transmission Mechanism

This mechanism consists of the

motor, paper feed, receipt, B

(fixed to pinion), the

gear,

reduction

, the

gear, idle r

, and the

gear, platen

. The printer uses a stepping motor, the

rotation force of which is reduced in sequence by the

gear, reduction

and the

gear, idl er

before being transmitted to the

gear, platen

. (The arrows in the figure below indicate the

direction of the gear rotation.) The

gear, platen

is mounted to the frame platen unit and

separates from the

gear, idle r

when the

platen

is open.

Figure 2-3 Drive force transmission mechanism

gear, platen

gear, idler

gear, reduction

motor, paper feed, receipt, B

2-4 Operation Principles Rev. A

Confidential

This printer uses a 4-phase bi-polar stepping motor driven by 24 V voltage controlled 2-2 phase
excitation. The maximum drive frequency of 2-2 phase excitation is 1200 pps. [pps: pulses per
second]

Paper Feed Mechanism

This mechanism consists of the paper feed mechanism and the platen-open mechanism.

Paper feed mechanis m

The paper feed mechanism consists of the

platen

(paper feed roller) and the

thermal head

.

When the

motor, paper feed, receipt, B

rotates counterclockwise as viewed from the shaft,

the gear train transmits the motion to the

platen

which rotates in direction A.

Figure 2-4 Paper feed mechanism

Paper feed operation during prin ting

The

platen

presses the thermal paper against the

thermal head

with a constant force. When

the

platen

rotates in direction A, the thermal paper advances in direction B.

Figure 2-5 Paper feed operation during printing

thermal head

platen

motor, paper feed, receipt, B

A

B

platen

thermal paper

A

Rev. A Operation Principles 2-5

EU-T432 Technical Manual

Confidential

Platen-open mechanism

The platen-open mechanism is used for the following purposes:

• Paper loading when using the printer with the curved path type. (Excluding when
using semi-autoloading mode.)

• Removing a paper jam when the paper jam has occurred

• The

thermal head

and the

platen

cleaning

The mechanism consists of the

frame, platen

, the

lever, platen

, the

shaft, platen

, the

spring,

lever

, the

lock lever

, the

spring, lock lever

, and the

pushplate , p l aten, B

.

In the

frame, platen

, the

platen

is mounted. The

lever, platen

is operated by hand to open t he

frame platen unit. The

shaft, platen

connects the

lever, platen

and the

frame, platen

to the

frame, base

in a manner which allows them to rotate. The

spring, lever

pulls the

lever,

platen

in the opposite direction of arrow A when the

platen

is open. The

lock lever

is located

on the gear train side of the

frame, platen

and locks the frame platen unit to the

frame, base

.

The

spring, lock lever

(inside the

lock lever

) pushes the

lock lever

back. The

pushplate,

platen, B

is secured on top of the

frame, platen

and covers the

fixed blade

.

When the frame platen unit is closed, the

platen

is in the print- ready position where the

gear,

platen

and the

gear, idler

are engaged and the power can be transmitted readily. Also, the

lock lever

is locked at a part of the

frame, base

to prevent the gears from disengaging.

To open the

platen

, turn the

lever, platen

in the direction of arrow A as shown in Figure 2-6.

Simultaneously, the

lock lever

is released and the frame platen unit is opened. To close the

platen

, turn the

lever, platen

in the opposite direction of arrow A until the lever stops.

Figure 2-6 Platen-open mechanism

frame, platen

shaft, platen

frame, base

spring, lock leve r

spring, lever

lever, platen

lock lever

gear, idler

gear, platen

A

< platen-open >

< platen-close >

push plate, platen, B

*The cover, gear is removed in these figures.

2-6 Operation Principles Rev. A

Confidential

Printing Mechanism

This mechanism consists of the

thermal head

which has the head heating elements a rrange d in

a series and has a driver IC for controlling voltage to the head heating elements, the

platen

which is also used for the paper feed mechanism as well as this mechanism (the

thermal head

is also used for both mechanisms), and the

spring, press head

. The

platen

presses the thermal

paper wrapped around the

platen

against the head heating elements pressed by the

spring,

press head

. When the elements are activated, the paper is heated at the designated points,

resulting in the printing actio n.

Printing operation principles

The cross-sections of the

thermal head

and the thermal paper are shown below. Printing is

performed in the following steps:

Figure 2-7 Cross -section of thermal head and thermal paper

1. Drive pulses are sent to the designated dot electrodes in accordance with the print signal.

2. Since the resistor layers are formed at the top of each electrode inside of the

thermal head

,

the resistor layers are heated up when the drive pulses are sent to the electrodes.

3. The thermal energy of the heated resistors is transferred via the protective layer of the

thermal head

to the surface of the thermal paper, and the heat-sensitive layer of the paper

changes color, thus forming the printed character.

<cross-section of thermal paper>

<cross-section of thermal head>

<top view of thermal head>

base

heat- sensitive layer

resistor layer

protective layer

electrode layer

ceramic base plate

glaze layer

electrode laye r

electrode laye r

resistor layer

Rev. A Operation Principles 2-7

EU-T432 Technical Manual

Confidential

Data input and printing

The

thermal head

consists of the head heating elements, the head driver, which controls or

drives the head heating elements, and the

thermistor,

which detects the temperature of the

thermal head

. The serial print data input from Data In (DI1) is synchronized to the CLOCK
(CLK) input, and temporarily placed in the SHIFT REGISTER. Using the LATCH (/LAT) signal
timing, these data are then stored in the LATCH REGISTER. Activated by the STROBE signals
(/STR1, /STR2), the stored print data is used to control the gate ON condition for the head
heating element drive pulse.
This printer is equipped with two strobes, and can print using a maximum of four divisions.
The drive pulse width is controlled by the control circuit board module.

Figure 2-8 Thermal head block diagram

Table 2-3 Strobe and Dot Number

STROBE No. Dot No. Dots/STROBE

1 1 to 320 320
2 321 to 640 320

*The STB terminals are pulled down in the con trol IC.

64 output each

2-8 Operation Principles Rev. A

Confidential

Paper Guide Mechanism

This mechanism consists of the paper guide mechanism. The paper path consists of the

paper

guide, straight, front

and the

paper guide, straight, back

. The paper path is shown below.

Figure 2-9 Paper path

Detector Mechanism

This mechanism consists of the paper-end mechanism, the platen-open detector mechanism, the
head temperature detector mechanism, and the black mark detector mechanism.

Paper-end detector mechanism

The paper-end detector mechanism is located inside the paper guide mechanism to detect the
end of the thermal paper and the paper insertion state in the semi-autoloading mode. This
mechanism consists of the

transparent photo sensor

, the

lever, paper detector

which

presses against the thermal paper and the

spring, paper detector

which pulls the

lever,

paper detector

.

Figure 2-10 Paper -end detector circuit

paper guide, straight, back

paper guide, straight, front

platen

paper

<printer side>

paper-end detector signal

Photo interrupter

Pin No.

220

Ω

75 K

Ω

13 V

13

V

DD

11

7, 8, 10

GND

Rev. A Operation Principles 2-9

EU-T432 Technical Manual

Confidential

The

transparent photo

sensor is in a high state (HI) when the paper is present, and in a low

state (LOW) when the paper is not present because the

lever, paper detector

blocks light to

the sensor. When the end of the thermal paper passes through the paper guide, the

lever, paper

detector

operates as shown in Figure 2-11. At this time, the output level from the

transparent

photo sensor

varies as shown in Figure 2-12, then the absence of paper is detected. When the
semi-autoloading function is used, the insertion of paper changes the status from “no paper” to
“paper.” Since the output level changes from LOW to HI , the status changes to “paper”; th en the
semi-autoloading function is in itiated.

Figure 2-11 Paper-end detector mechanism

Figure 2-12 Paper-end detector operation

platen

thermal head

transparent photo
sensor

lever, paper detector

paper guide, straight, front

frame, base

paper

<paper-present condit ion >

<paper-absent cond it io n>

paper guide, straight, back

paper-end signal

conductive confirma tion

paper-end detection

2-10 Operation Principles Rev. A

Confidential

Platen-open detector mechanism

The platen-open detector mechanism has a

microswitch

which detects whether the

platen

is

open (printing impossible because the

thermal head

is away from the

platen

) or closed

(printing possible). The

microswitch

can be OFF only when the

frame, platen

is perfectly

closed, and at all other times is ON.

Figure 2-13 Platen-open detector circuit

Head temperature detector mechanism

The

thermal head

has a

thermistor

to detect the temperature of the

thermal head

.

Black mark detector mechanism

The black mark mechanism is a device whi ch can be at tached insi de the paper g uide mechanism
to determine the printing position when using pre-p ri nted ther mal pap er. Th is mec hani sm uses
the reflective photo sensor.

Figure 2-14 Black mark detector circuit

<printer side> Pin No.

platen open

platen open

Pins 14 and 15 can be reversed.

14

15

SW2

SW1

Pin No.

black mark de tector
output

<printer side>

220

Ω

0 to 100 K

Ω

10 K

Ω

13

V

DD

12

7, 8, 10

GND

Rev. A Operation Principles 2-11

EU-T432 Technical Manual

Confidential

Black marks are detected through changes in output level from the reflective photo sensor. The
changes in reflectivity between the pre-printed black marks and blank areas of the thermal
paper cause the amount of light returning to the sensor to vary; then the sensor output level is
also varied as shown in Fig ure 2-15 . These v ariat ions ar e used t o detec t the black mark. Si nce the
relationship between the black mark an d the pri nt positi on can be specified in the pr inter set up,
detecting the black mark permits the correct positioning of the paper.

Figure 2-15 Black mark detecting operation

Autocutter Mechanism

This mechanism consists of the fixed blade mechanism, the movable cutter blade mechanism
and the emergency cutter mechanism.
The basic principl e of t he aut ocutt er mecha nism is an appl icati on of the sci ssors princi ple, where
the paper is cut by two crossi ng blades. A config urati on which al lows the two blades to separate
has been adopted so that the

fixed blade

separates from the

movable cutter bl ade , full

when

the

platen

is open.

Fixed blade mechanism

This mechanism is mounted on the frame platen unit. This configuration consists of the

fixed

blade

which cuts the paper directly, the

spring, fixed blade

which stabilizes the vertical

positioning of the

fixed blade

, and the

cover, fixed blade

which covers the

fixed blade

and

is a paper guide as well as makes the operation to open the

platen

safe.

Figure 2-16 Fixed blade mechanism

black mark de tector signal

conductive confirmation

black mark detection

spring, fixed blade

fixed blade

cover, fixed blade

frame, platen unit

2-12 Operation Principles Rev. A

Confidential

Movable cutter blade m ec h an ism

This mechanism is mounted on the

frame, base

.

The drive force tr ansmission mec hanism is on the

cover, cutter

side. The

motor, cutter

is a DC

brush motor on the

gear, cutter motor

. It supplies the power and is attached on the

cover,

cutter

with screws. The

gear, reduction A/C

and the

gear, cutter worm

are supported by t he

shaft, reduct i o n A/C

, and the

gear, cutter drive

is attached with push nuts to the

shaft,

cutter drive gear

fixed on the

cover, cutter

.

After being transmitted through the

gear, reduction A/C

and the

gear, cutter worm

, the

power is transmitted to the

gear, cutter drive

. The

gear, reduction A/C

is pushed against the

gear, cutter w o r m

by the

spring, cutter clutch

and the

washer, Clutch

, forming a one-way
clutch which is used to cut off the transmission of power when the transmitted load exceeds a
prescribed level during paper cuttin g.

The rotational movement of the

gear, cutter drive

is transmit ted to the back and forth

movement of the

movable cutter blade

by being engaged with the

shaft, movable cutter

blade drive

with the oval hole of the

movable blade

on the

frame, cutter

. Also, the

microswitch

attached to the

cover, cutter

is connected t o th e

gear, cutter drive

, enabling it to

detect the position of the

movable cutter blade

. The lead wires of the

motor, cutter

and the

microswitch

are bound together and connect to the

circuit board

.

The

shaft, movable cutter blade

is on the

frame, cutter

side. The

receiver, movabl e cutter

blade

, the

spacer, movable cutter blade

, the

spring, movable cutter blade

and the

washer, movable cutter blade spring

are mounted on the

shaft, movable cutter blade

in a

group with a push nut.

When putting the

cover, cutter

and the

frame, cutter

together, engage the

shaft, movable

cutter blade drive

with the oval hole of the

movable cutter blade

, and secure the

cover,

cutter

and the

frame, cutter

with screws.

Figure 2-17 Movable cutter blade mechanism

gear, cutter drive

shaft, cutter drive gear

cover, cutter

shaft, movable cutter
blade drive

gear, cutter worm

shaft, reduction A/C
(inside the gear, cutter
worm: dot lined part)

frame, cut ter

movable cut ter blade , full

receiver, movable

cutter blade

spring, movable
cutter blade

washer, movable

cutter blade spring

shaft, movable cutter blade

spacer, movable cutter blade

motor, cutter

microswitch

gear, cutter motor

Rev. A Operation Principles 2-13

EU-T432 Technical Manual

Confidential

Autocutting operation

The

autocutter

will operate when the frame platen unit is closed and a paper is loaded. (The

frame platen unit c an be c losed when t he

movable cutter blade, full

is in the standby position.

The autocutting operation is performed in the following steps:

1. Drive the

motor, cutter

in the forward rotation.

2. The

microswitch

is switched from OFF (open) to ON (closed) while the

motor, cutter

continues to rotate in the forward rotation. The

movable cutter blade, full

intersects with

the

fixed cutter blade

and cuts the paper from the ri ght t o t he l eft, toward t he fi rst co lumn.

3. After cutting the paper, the

movable cutter blade, full

starts to return to the home

position.

4. As the

movable cutter blade, full

approaches the home position, the

microswitch

is

switched from ON (closed) to OFF (open); then the

motor, cutter

stops rotating and the

brake is applied.

Figure 2-18 Auto cutting operation

Figure 2-19 Auto cutting control example

fixed blade

spring, fix e d blade

movable cut ter blade , full

cutter motor forward driving

cutter motor brake

switch signal rectifying
waveform

2-14 Operation Principles Rev. A

Confidential

Note:

If the

movable cutter blade, full

cannot be returned to the home position because of foreign matter

locking the blade when powered by the

motor

, rotate the knob on the

gear, cutter worm

with a tool

such as a ball-point pen or tweezers to move the

movable cutter blade, full

to the home position. The

window on the

cover, cutter

can be used to check if the

movable cutter blade, full

has returned to

the home position.

Figure 2-20 Home position check

window

<Movable cutter blade in the home position>

knob

Rev. A Operation Principles 2-15

EU-T432 Technical Manual

Confidential

Cut Sheet Presenter Module

The cut sheet presenter module has a mechanism to feed the paper printed and cut by the
printer mod ule to the paper exit.

Figure 2-21 Appearance of cut sheet presenter module

Paper Feeding Operation (With a Loop)

A paper feeding operation is performed at the same time with the start of the paper feeding of
the printer module. The

motor, cutting paper feed

rotates in the clockwise direction as seen

from the shaft direction, and the

roller, presenter

rotates in the clockwise direction via the

gears. The

roller, cutting paper hold

is pressed to the

roller, presenter

by a spring.

The paper sent from the print er mod ule i s fed along the p aper guidin g par t, and fe d be tween t he

roller, presente r

and the

roller, cutting paper hold

. When the tip of the paper reaches the

detection position of the

paper presence sensor

, the

motor, cutting paper feed

stops

temporarily.

Figure 2-22 Start of the cut sheet feeding

roller, cutting paper hold

paper eject sensor

roller, presenter

paper presence sensor

motor, cutting paper feed

autocutter

paper exit

2-16 Operation Principles Rev. A

Confidential

While the tip of the paper sent from the printer module is in the standby state between the

roller,

presenter

and the

roller, cutting paper hold

, the paper is continuously fed from the printer

module. The paper pushes up the

paper guide, upper

and temporarily forms a loop.

Figure 2-23 Cut Sheet with Loop

When the paper feed from the printer module is finished, the cutter on the printer module cuts
the paper; then the

motor, cutting paper feed

resumes rotating and the cut sheet is fed from

the

roller, presenter

to the

paper exit

.

When the

paper eject sensor

detects the end of the cut sheet, the

motor, cutting paper feed

stops. With the cut sheet between the

roller, presente r

and the

roller, cutting paper hold

, a

series of operations is completed and the cut sheet is ejected from the

paper exit

.

A

paper presence sensor

can detect whether or not the cut paper is removed.

Figure 2-24 End of the Cut Sheet Feeding Operation

motor, cutt in g pa p er feed

roller, presenter

paper guide, upper

roller, cutting paper hold

loop

autocutter

paper exit

autocutter

paper guide, upper

roller, cutting paper hold

paper exit

roller, presenter

cut sheet

paper eject sensor

motor, cutting pape r feed

paper presence sensor

Rev. A Operation Principles 2-17

EU-T432 Technical Manual

Confidential

Paper Feeding Operation (Without a Loop)

The cut sheet presenter module can feed paper without forming a loop.

Figure 2-25 Cut Sheet Operation without Loop

Note:

During paper feeding operations without a loop, do not pull out the paper.

Detector Mechanism

The detector mechanism consists of the

presenter open sensor

, the

paper eject sensor

, and

the

cut sheet presence sensor

.

Presenter open se n sor

This sensor detects whether the

cut sheet presenter module

is open or not.

Paper eject sen s or

This sensor detects the paper presence in the paper feeding route.

Cut sheet presence sensor

This sensor detects whether or not the cut sheet has been removed.

roller, cutting paper hold

motor, cutting paper feed

roller, presenter

paper exit

paper guide, upper

2-18 Operation Principles Rev. A

Confidential

Control Circuit Board Module

The control circuit board module controls all functions of each module and has the interface
connectors and the power supply terminals. Each function can be set by using the DIP switches
and the memory switches.

Figure 2-26 Appearance of the control circuit board module

DIP Switches

The circuit board has two DIP switches (DSW 1/2). Each setting is as follows:

DIP Switch 1

*: Effective only when the serial interface is selected .

Table 2-1 DSW 1

SW No. Function

ON OFF

Default Setting

1 Black mark dete c ot o r Enable d Disabled

OFF

2

Interface selection

Refer to Table 2-2

3
4 Serial interface

handshaking

XON/XOFF DTR/DSR or

CTS/RTS

OFF*

5 Serial interface parity

check

Yes No

6 Serial interface parity

selection

Even Odd

7

Serial interface baud
rate selection

Refer to Table 2-3

8

DIP switch 1

DIP switch 2

Rev. A Operation Principles 2-19

EU-T432 Technical Manual

Confidential

bps: bits per second

DIP Switch 2

(*1): Fixed to OFF
(*2): Effective only w he n th e s eria l in terface is selected.

Table 2-2 Interface Selection

Interface

Switch No. 2 Switch No.3

Parallel interface (IEEE1284) OFF OFF
Serial interface (RS232) OFF ON
Optional interface ON ON or OFF

Table 2-3 Baud Rate Selection

Transmission speed (bps) Switch No.7 Switch No.8

4800 ON ON

9600 OFF ON
19200 ON OFF
38400 OFF OFF

Table 2-4 DSW 2

SW No. Function

ON OFF

Default setting

1

Model type selection Refer to Table 2-5

ON

2

OFF

3

Print density selec tio n

Refer to Table 2-6

4
5 Operation mode

selection

Refer to Table 2-7

6Factory use OFF (*1)
7 I/F pin 6 reset signal-1

Enabled

Disabled

OFF (*2)

8 I/F pin 6 reset signal-2

Enabled

Disabled

Table 2-5 Model Type Selection

Model Switch No.1 Switch No.2

79.5 mm {3.15"} paper-width model: 576 dots) ON OFF

2-20 Operation Principles Rev. A

Confidential

Notes:

•

Changes in DIP switch set t in gs (e x clud ing switches 2-7 and 2-8 ,i nt erface reset signals) are recog n ize d on ly

when the printer power is turned on or when the printer is reset by using the interfa c e.

•

If you turn on DIP SWs 2-7 and 2-8 while the printer power is turned on, the printer may be reset, depen di ng on

the signal state. DIP switches should not be changed while the printer power is on.

Memory Switches

Other settings except DIP switches 1 and 2 are set by the memory switches. (The settings are
changed with a GS (

GS (GS (

GS ( EEEE command, and also can be changed by using the MEMSW.exe included

with EPSON Advanced Windows Drivers.) The settings of the memory switches are as follows:

(*1): Effective only in th e s eria l in terface model.
(*2): Effective only in the parallel interface model.

Table 2-6 Print Density Selection

Level Print Density Switch No.3 Switch No.4

1

Slightly light

ON ON

2

Normal

OFF OFF

3

Slightly dark

ON OFF

4

Dark

OFF ON

Table 2-7 Operation Mode Selection

Operation mode Switch No.5

Hexadecimal dump ON

Normal

OFF

Table 2-8 Memory Switch 1

SW No. Function

ON (1) OFF (0)

Default setting

1

Reserved



Fixed to OFF OFF(0)

2
3 BUSY condition Receive buffer full Receive buffer full

or offline

OFF(0)

4 Receive error Ignored Prints “?” OFF(0) (*1)
5 Auto line feed Always enabled Always disabled OFF(0) (*2)

6 to 8 Reserve d



Fixed to OFF OFF(0)

Table 2-9 Memory Switches 2 to 5

SW No. Function

ON (1) OFF (0)

Default setting

1 to 8

Reserved



Fixed to OFF OFF(0)

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(*1): This setting is used for selecting the following modes:

<Power consumption has priorit y over prin t spee d >
In this mode, the printer operates with power consumption as low as possible.
<Print speed has priority over power consumption>
In this mode, the printer prin t s at the max i mu m s peed.

If the printer power is supplied with a power source that is less than 100 W, do not turn on the print speed mode.

(*2): This setting sp ec ifi e s th e pr in ter’s operation if a paper out is de tected during printi ng an d f eed in g .

Enabled: Ejects paper automatically
Disabled: Does not eject paper (from the presenter)

(*3): The print energ y is applied according to th e ta bl e below.

The values in the table below are relative ones,a ssum in g tha t the print ener gy for normal paper with normal

density is 100 %.

Table 2-10 Memory Switches 6

SW No. Function

ON OFF

Default setting

1 to 2

Reserved



Fixed to OFF OFF(0)

3

Print speed control

Speed has priority

over power

consumption

Power consumption

has priority over

print speed

OFF (0) (*1)

4

Auto eject if the

paper out is

detected

Disabled En ab led OFF (0) (*2)

5

Reserved



Fixed to OFF OFF (0)

6

Selection of type of

thermal paper

Excellent

preservation paper

(thick type)

Normal OFF (0) (*3)

7

Reserved



Fixed to OFF OFF (0)

8

Selection of the

operation of

GS FF

Disabled Enabled OFF (0)

Table 2-10-1 Print Density Selection

Memory SW6-6

ON OFF

Slightly light

100% 85%

Normal

115% 100%

Slightly dark

130% 115%

Dark

145% 130%

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(*1): • Effective only for the model type with the paper roll supply module

• This setting lets the printer tell the paper near-end by sending the secondary paper near-end status when the
specified length of paper is fed after the pri mary paper near-e nd s ensor in the paper ro ll supply module
detects the paper near-end.

• If the paper near-end sensor 2 is installed in the printer, the detecting result of the paper near-en d sensor 2
becomes the secondary near-end status. (The setting of memory switches 7-2 and 7-3 are ignored.)

(*2): Effective only when using with the cut sheet presenter module .

Table 2-11 Memory Switch 7

SW No. Function

ON (1) OFF (0)

Default setting

1

Reserved



Fixed to OFF OFF(0)

2 and 3

Setting for the
secondary paper
near-end position

Refer to Table 2-12

OFF(0) (*1)

4 Operation after

cutting

Ejects fully Clamps

OFF(0) (*2)

5 Paper initializing

operation when the
power is turned on

Always cuts Detects paper’s tip

6 to 8 Reserve d



Fixed to OFF OFF(0)

Table 2-12 Setting for Paper Near-end Detecting Position

Paper length
(for the time between detecting the
primary paper near-end with the near­end sensor and sending the status of
the secondary paper near-end)

Memory SW No.7-2 Memory SW No.7-3

Approximately 5 m {196.85"}

OFF OFF

Approximately 10 m {393.70"}

ON OFF

Approximately 20 m {787.40"}

OFF ON

Approximately 30 m {1181.10"}

ON ON

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(*1): Do not set SW 3 to ON in the following condition:

•

The partial cutter is used when the cut sheet pre sent er mo d ule is not used .

When backward paper feeding is enab led , the follo win g pro cess is execut ed .

•

After cutting the paper with a

GS V

command, backward paper feeding is executed (when the Black

mark detector is disabled).

•

The print star ti ng position adju s tment with a

GS (F

command can be set to the backward direction
relative to the cutting position. In this case, the maximum backward correction value is 14 mm {0.55"}
(112 step × 0.125 mm {0.005"} per step).

(*2): Specific offline means the following states.

• Error state except an automatic recovery error state

• Platen open

• Cut sheet presenter module or cover open

• Paper empty
If this switch is turned on, the printer clears the receive buffer when the offline status shown above occurs. Then
the printer executes any real-time command (

DLE ENQ, DLE EOT

) if it is there, and discard s all ot h er da ta.
When the receive buffer is cleared, if this switch is turned on, three bytes of data, 37H, 24H, and 00H, are
transmitted.

×

: can be either setting

Table 2-13 Memory Switch 8

SW No. Function

ON (1) OFF (0)

Default setting

1 to 2

Print control mode

Refer to 2-14 OFF(0)

3 Backward paper

feeding

Enabled Disabled OFF(0) (*1)

4 Autocutter

installation

Not installed Installed OFF(0)

5 Specific offline

operation

Discards receive
data

Keeps receive data OFF(0) (*2)

6 Backward paper

feeding amount

88 steps 108 steps

OFF(0)7 Test print when the

paper is loaded

Enabled

Disabled

8Reserved



Fixed to OFF

Table 2-13 Print Control Mode Selection

Default for the print

control mode SW 1 SW 2

Non-divided energi zin g

mode

OFF OFF

Two-part energizing

mode

ON OFF

Four-pa rt energizing

mode

×

ON

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Chapter 3

Handling

Precautions

Transport Precautions

❏ When shipping the printer, use antistatic packing materials.
❏ Remove the paper roll when transporting the EU-T432.
❏ Make sure to close the paper roll supply module, the

platen unit

of the printer mod ule, and

the cut sheet presenter module when transporting.

Carrying Precautions

❏ Hold the paper roll supply module and the handle (a part with a green sticker on it) on the

paper roll supply module when carrying the printer as shown below. When this product is
equipped with an optional

loop guide

, you can hold the loop guide to carry it.

Note:

Do not hold parts other than those mentioned above; otherwise you can cause damage or deformation
of parts that will affect the operation of the printer.

❏ When you put this unit on a place such as a desk, be sure to put it on a flat place; otherwise,

a malfunction may occur because of deformation of parts.

Figure 3-1 Correct way of holding the EU-T432

handle

cut sheet presenter module

printer module

paper roll supply module

hole for a ground wire

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Installation Precautions

❏ When installing the unit, firmly secure four mounting parts at the bottom of the paper roll

supply module to the system side with screws.

❏ Make sure to ground the unit by using the hole for a ground wire on the side of the frame.

(See Figure 3-1 for the position.)

Note:

If the system side where the unit is installed is not flat, that could cause deformation of parts and
malfunction. (It is recommended the difference in level is 0.3 mm {0.012"} or less.)

Handling Precautions

Paper roll supply module

❏ Do not apply excessive pressure to the

paper roll supply module

when opening or closing

it; otherwise, the unit may not open and close properly because of deformation of parts.

❏ Do not touch the light emission or receiving surfaces of the

paper NE detector

; otherwise

you may cause damage from dirt or static electricity.

Printer module

CAUTION:

Since the thermal head area and the motor surface can be hot during and right after
printing, never touch them with your bare hands; allow about 15 minutes for them to
cool.

❏ Since the EU-T432 contains permanent magnets (in the motor) as well as electromagnets,

they should not be used in an environment with excessive dirt, dust, or metallic dust.

❏ Never print without p ap er inst all ed or wi t h t he head away from the

platen

, because the life

of the

thermal head

may be shortened.

❏ Never pull out the paper (forward or backward) with the head down (against the

platen

).

❏ Do not turn off the power during operations, especially during a cutting operation;

otherwise the cutter blade could be exposed, leaving the

platen un i t

difficult to open.

❏ Since the head heating elements and the driver IC are very delicate, avoid touching them

with any metal objects such as tweezers or screwdrivers.

❏ Open the

platen unit

only when required.

❏ Never touch the surface o f the head heating elements or t he d ri v er IC beca use d irt ma y stic k

to them, affecting the head heating elements or causing damage from static electricity.

❏ Before handling the

thermal head

, use proper body grounding procedures to avoid

damage from static electricity.

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❏ Make sure no dust collects on the thermal paper.
❏ Since the printer uses a line thermal print head, condensation must be avoided. If

condensation occurs, do not turn on the printer until it has disappeared.

❏ Do not apply excessive pressure to the

lever, platen

when opening or closing the

platen

unit

with the lever.

Cut sheet presenter module

CAUTION:

Since the paper feed motor surface will be hot after printing for a long period of time,
never touch them with your bare hands; allow about 15 minutes for them to cool.

❏ Since the EU-T432 contains permanent magnets as well as electro magnet s in the motor, they

should not be used in an environment with excessive dirt, dust and metallic dust.

❏ Operate the cut sheet presenter module only when required. Do not apply excessive

pressure when operating the cut sheet presenter module.

❏ Do not turn off the power during operations because that could cause a paper jam.

Control circuit board module

The serial interface is secured with inch-type hexagonal lock screws. If you need to use
millimeter-type screws, replace the inch-type screws with the millimeter-type screws enclosed
in the box.

Paper roll

❏ Use only the recommended thermal paper because thermal paper contains a high ion

content such as Na, K and Cl may damage the head heating elements.

❏ Avoid heat, humidity, sunlight and solvents, regardless of whether or not the paper has

been used. (Thermal paper gradually darkens at about 70°C {158°F}.)

❏ Remove the installed paper roll when the unit is not used for a long time in a high

temperature or high humidity condition; otherwise the thermal sensitive materials
contained in the thermal paper may stick to the thermal head area, affecting the printing
quality.

❏ Label sheets are not available for the EU-T432.

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Confidential

Storage Precautions

❏ Do not store the printer in environments with excessive dust, high temperature, high

humidity, or in direct sunlight.

❏ Before storing the EU-T432 for an extended time, remove the paper and wipe off dirt and

dust; then clean parts such as the

platen

and the

thermal head

of the printer module with

alcohol. After the alcohol evaporates, close each module and store the unit.

Note:

If you leave the printer with the paper installed, discoloration of the paper and stickiness between the
paper and the

platen

may occur. In this case, replace the paper.

❏ Storing the printer for an extended period with the

platen

closed could cause the platen
rubber to deform and result in defective printing. If the platen rubber is deformed, it can be
restored to its proper shape by feeding paper through the printer. Just feed paper through
the printer until the

platen

works properly; then resume printing.

Opening and Closing Modules, Unit and Part

Follow the steps below to open and close modules, unit, and part you want. See Figure 3-2 on
page 3-5.

Note:

❏

Do not apply excessive pressure to any operational part; otherwise its function may be damaged
because of deformation or damage of the part.

❏ Apply pressure to each operational part only in the specified direction; otherwise its function may be

damaged because of damage or deformation of the part.

Paper Roll Supply Module

Note:

When opening or closing the paper roll supply module, make sure to secure the bottom of the module.

1. While holding down the

frame open lev er

to unlock the paper roll supply module, pull the

plate, opening an d shutti ng

or the optional

loop guide

to the near side (in the direction

of arrow A) and turn the paper roll supply module to open it.

2. To close the module, push it back in the opposite direction of arrow A until it stops. At this
time, make sure that the

frame open lever

is securely engaged with the fixing part. (Make

sure the module is not open when it is pulled in the direction of arrow A.)

Platen Unit

1. To open the unit, hold down the

lever, platen

(green lever) of the printer module.

2. To close the unit, turn the

lever, platen

upward.

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Cut Sheet Presenter Module

1. Put your fingers on the top and bottom of the cut sheet presenter module; then pull the
module up at an angle (in the direction of arrow B) to slide it.

2. Pull the module until the mounting dowels on both sides of the module are disengaged;
then turn the module downward and open it.

3. To close the module, lift up the bottom of the

paper exit

and slide it back to the original
position. At th is time, make su re that the mount ing dowels (on both sides) are securely
engaged with the mounting parts on the cut sheet presenter module.

Paper guide, upper

To open the

paper guide, upper

, lift up the knob on the right edge of the paper guide.

Figure 3-2 Opening/closing units and module

plate, opening and shutting

paper guide, upper

paper roll supply modu le

lever, platen

cut sheet presenter module

mounting dowels

Opening andClosing of

the platen unit

Opening/ Closing of
the paper roll supply module

tab

A

B

paper exit

Opening/ Closing
of the cut sheet
presenter module

Opening/ Closing of
the paper guide, upper

frame, open lever

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Loading and Removing a Paper ro l l

Loading a Paper roll

Follow the steps below to load or remove the paper roll. See Figure 3-3 on page 3-7.

Note:

Use only the paper specified in the EU-T432 specifications issued by Seiko E pson Corporation.

Loading paper for the paper roll supply module

1. Open the paper roll supply module. (See “Opening and Closing Modules and Other Parts”
on page 3-4.)

2. Remove the

shaft, roll paper holder

from the

roll paper holder

. (Since there are two
springs on the right and left sides of the shaft to keep it from being accidentally removed,
pull the shaft toward the groove on the paper holder to remove it.)

3. Attach a

holder, roll paper

which meets the inside diameter of the paper core to the

shaft,

roll paper

; then secure it with a C-ring.

Note:

At the default setting, the

holder, roll paper A

(for the 25.4 mm {1"}) inner diameter p aper co re) is

attached to the paper roll supply module. Since other holders are available as optional parts, use the

holder, roll paper

that meets your paper core size. The

holder, roll paper B

is for a 50.8 mm

{2"} inner diameter paper core, and the

holder, paper roll C

is for a 76.2 mm {3"} inner diameter

paper core.

4. Load the paper roll to th e

holder, roll paper

until it stops against the flange of the holder.

5. Facing the printing surface upwards, install the

holder, roll paper

to the

roll paper

holder

. After installing, make sure that the paper roll is secured by the two springs on both

sides.

Note:

Make sure that the paper roll is loaded with the printing surface facing upwards.

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6. Turn the paper roll supply module back to its original position until it is locked by the

frame open lever

with a click sound. Then turn it back so that the

plate, paper guide

is

not deformed.

Figure 3-3 Loading and removing the paper roll

holder, roll paper

shaft, roll paper

roll paper
holeder

paper roll supply modu le

C-ring

panel switches

plate, paper guide

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Loading paper for printer module

Follow the steps below to load the paper for the printer module from the paper roll supply
module.

1. Cut the edge of the paper as shown below.

Figure 3-4 Shape of paper edge

2. Pull out a certain amount of paper.

3. After inserting the paper edge straight into the paper slot of the printer module so that the
paper is along the upper side of the

plate, paper guide

, push the paper with your hand.

4. When the paper is detected by the

paper-end detector

of the printer module, it is fed

automatically in the semi-autoloading mode.

5. When the semi-autoloading is finished, the extra paper is cut automatically.

6. Remove the extra paper from the

paper exit

.

Note:

• Performing operations other than above can cause improper paper feeding and jamming.

• Make sure that the paper is not wrinkled or torn.

• To avoid paper jams, do not fold the edge of the paper.

• Paper curled in the opposite direction to the paper entrance may be difficult to insert.

• If the paper is not inserted at a right angle, paper jams or paper folding may occur. In this case,

open the

platen unit

and load the paper properly after removing the jammed paper.

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Removing Paper

Follow one of procedures below to remove the paper roll.

Removing pape r u sing BACK and FEED buttons

You can remove the paper using the BACK and FEED buttons. If yo u push th e FEED button while
holding down the BACK button, the paper will be fed backwards. After the paper is ejected, the
paper roll can be removed using the same steps in “ Manual paper re m oving.”

Removing pape r u sing command

While the printer is online, you can also remove the paper using a

FS ( z

command. If you use

the

FS ( z

command, the paper will be fed backward until it is detached from the

platen

. After
the paper is ejected, the paper roll can be removed using the same steps as in “Manual paper
removing.”

Manual paper removing

1. Turn the

lever, platen

to open the

platen unit

.

2. Pull out the paper from the paper slot of the printer module.

3. Open the

paper roll supply module

.

4. Pull the paper upward and remove it from the paper roll supply module.

5. Remove the paper core from the

holder, paper roll

.

Removing Jammed Paper

Follow the steps below to remove jammed paper from each module. (See “Opening and Closing
Modules and Other Parts” on page 3-4 when opening modules, if necessary.)

CAUTION:

Since the thermal head area and the paper feed motor surface of the printer module
and the paper feed motor surface of the cut sheet presenter module will be hot right
after printing, never touch them with your bare hands; allow about 15 minutes for them
to cool.

Note:

❏

Never pull the paper out with the

platen unit

down.

❏

When using tools such as tweezers to remove paper pieces, avoid touching the head heating elements
or the elements of each paper detector with them.

Removing Jammed Paper From the Cut Sheet Presenter Module

Open the cut sheet presenter module, and lift the

paper guide, upper

; then remove the

jammed paper.

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Removing Jammed Paper From the Printer Module

1. Open the cut sheet presenter module.

2. Turn the

lever, platen

to open the

platen unit

and remove the jammed p aper.

Paper NE Detector Setting

This detector is mounted on the paper roll supply module. By adjusting the position of the
detector, the detector can detect the amount remaining on the paper roll at the setting value. At
the default setting, the amount remaining is set to be about 5 m {196.85"} when the paper tip is
detected, and when using paper which has 25.4 mm {1"} inner diameter of the core, 33.4 mm
{1.3"} outer diameter of the core, and the 65 µm paper thickness. When you want to change the
setting, follow the steps below.

1. If the paper is loaded, open the

paper roll supply module

and remove the paper roll. (See

“Removing Paper” on page 3-9.)

2. Loosen the

screw, NE detector

so that the

paper NE detector

can be moved in the

direction of arrow in the illustration on next page.

3. Tighten the

paper NE detector

with the

screw, NE detector

at the position you want for

the

paper NE detector

.

The hole numbers for the

paper NE detector

fixing hole and the paper roll diameters

detected by the

paper NE detector

are as fol l ows:

Note:

❏

Because the amount remaining on the paper roll will vary with the paper types (thickness), mak e sure
to check before setting.

❏

Do not touch the light emission or receiving surfaces of the

paper NE detector

with your hands or

any objects since you may cause damage from dirt or static electricity.

Table 3-1 Setting of the Paper NE Detector

Hole No. 1Hole No. 2Hole No. 3Hole No. 4Hole No. 5Hole No. 6Hole No. 7Hole No. 8Hole No.

9

Detected paper
diameter
(for 6 inch types)

40 mm
{1.56"}

50 mm
{1.97"}

60 mm
{2.36"}

70 mm
{2.76"}

80 mm
{3.15"}

90 mm
{3.54"}

100 mm
{3.94"}

110 mm
{4.33"}



Detected paper
diameter
(for 8 inch types)

40 mm
{1.56"}

50 mm
{1.97"}

60 mm
{2.36"}

70 mm
{2.76"}

80 mm
{3.15"}

90 mm
{3.54"}

100 mm
{3.94"}

110 mm
{4.33"}

120 mm
{4.72"}

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Figure 3-5 Setting of the paper NE detector

paper NE detector
(back side)

screw, paper NE detector

1 2 3 4 5 6 7 8 9 (hol e No,)

paper roll supply modu le

for 6 inch type

for 8 inch type

1 to 8

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Self Test

The EU-T432 has self test functions. Follow the steps below to perform the self tests.

Performing the Self Test

1. With the paper loaded, turn on t he power wh ile hol ding down t he FEED button on the panel

switch. (If the power is already on, turn it off first before performing the self test with the
paper loaded.)

Figure 3-6 Performing the self test

2. The current printer status is printed.

3. When the printing is complete, the message, “If you want to continue SELF-TEST

printing, please press FEED button,” is printed; then the PAPER OUT LED starts to
flash.

4. Press the paper feed button again while the PAPER OUT LED is flashing; then the printing

(for the test pattern printing) is resumed .

Self Test End

After a number of lines are printed, the message ***completed*** is sprinted at the end of
the self test; then the unit enters the normal operational mode, with all settings initialized.

Note:

During the self test, check each LED on the circuit board. If an error occurs during the self test, see the
following section and “Troubleshooting” in Chapter 5 for details.

POWER LED

PAPER LED

FEED button

BACK button

ERROR LED

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Errors

LED Display

The LED indications indicat e t he fol lowin g : the POWER LED for power supply error, the PAPER
LED for paper-out error and the ERROR LED for various kind of errors. For the LED position, see

Figure 3-6 “Performing the self test,” and for recovery from errors, see “Troubleshooting” in
Chapter 5.

POWER LED (Power Supply Error): Green

When the POWER LED is lit, the power is supplied. The LED indicates the following:.

PAPER LED (Paper-End Error): Red

When the PAPER LED is not lit, the paper roll has enough paper on it. The LED indicates the
following:

ERROR LED (Error): Red

ERROR LED has three error types: the automatic recovery error, the possible recovery error, and
the recovery impossible error. The LED indicates the following:

Automatic recovery error

Note:

The high temperature error of the print head is not an abnormality. When the head cools down to 70

°

C or

less, the unit recovers automatically.

Table 4-4 POWER LED Error

Error type LED flashing pattern Cause

Power supply error Not lit

The power supply connector is unplu gg ed .
The fuse (F1) is blown out.

Table 4-5 PAPER LED Error

Error type LED flashing pattern Cause

Paper-end error Lit

•

The paper roll is near its end or no paper is loaded.

• Α

paper jam has occurred around the detector.

•

Detector failure has occurred.

•

The connector of the detector is unplugg e d.

Waiting for self test
printing to be continued
or macro execution
ready state

Flashing

Self test printing is in th e rea dy st at e du rin g sel f test .

Table 4-6 Automatic recovery error

Error type LED flashing pattern Cause

Print head high
temperature error

The head temperature has reached 75°C or more.

→

Approx. 320 ms

Approx. 320 ms

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Possible recovery erro r

Recovery impossible error

Note:

When any error shown above occurs, turn off the power as soon as possible.

Table 4-7 Possible Recovery Error

Error type LED flashing pattern Cause

Platen open error Platen unit is open during printing.

Autocutter error Autocutter malfunction

Black mark sensor
detection error

No black mark is detected even after a certai n am o un t
of paper with black mark is fed.

Presenter error A paper jam has been detected in the cut sheet

presenter module.

Table 4-8 Recovery impossible error

Error type LED flashing pattern Cause

CPU execution error The CPU has executed an incorrect address.

R/W error in
memory or G/A

After R/W checking, the printer does not work correctly.

High voltage error The power supply voltage is extremely high .

Low voltage error The power supply voltage is extremely low.

PCB connection
error

The printer is not connected or the head wiring is
disconnected.

Approx. 5.12 s

Approx. 320 ms

Approx. 320 ms

Approx. 5.12 s

Approx. 5.12 s

Approx. 5.12 s

Approx. 320 ms

Approx. 5.12 s

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Chapter 4

Maintenance

To keep the printer in peak working condition, extend its life for a long term, and prevent
operational failures, follow the maintenance procedures below.

Cleaning

CAUTION:

• Never clean the thermal head with solvents other than the specified ones, since
other solvents could damage the thermal head or cause the malfunction of
parts.

• Since the head area and each motor surface can become hot right after
printing, allow about 15 minutes for them to cool.

Thermal Head Cleaning

The head heating elements of the printer modul e will collect dust aft er printing for a lon g period
of time because of heat sensitive materials contained in the paper, that could affect printing
quality. Therefore, cleaning the thermal head using the steps below is rocommended. (See
“Opening and Closing Modules and Other Parts” on page 3-4 for opening the module and the
platen unit if necessary.)

1. Turn off the power.

2. Open the cut sheet presenter module.

3. Open the

platen unit

using the

lever, platen

, and remove the paper.

4. Wipe off the dust on the head heating elements usi ng a cotton swab dampened with alcohol
solvent, such as ethanol, or IPA.

Figure 4-1 Thermal head cleaning

5. After the alcohol evaporates completely, turn the

lever, platen

or push the

push plate,

platen B

to close the

platen unit

.

head heating elemen ts

cotton swab

lever, platen

push plate, platen, B

4-2 Maintenance Rev. A

Confidential

Removing Stains (Except for the Thermal Head)

The areas where the paper is fed will be stained or collect dust after printing for a long time
because of paper dust and heat sensitive materials contained in the paper. Especially, if paper
feed rollers, the platen, or the paper detectors are not clean, a malfunction in paper feeding or
paper detection may occur. In this case, wipe off the stains with alcohol.

CAUTION:

Never use thinner, benzine, t richl oroethylene, or ketone group solv ents, si nce they could
damage rubber and plastic parts or cause them to deteriorate.

Removing Dirt and Dust

Use an electronic vacuum cleaner to remove dirt and dust. After cleaning, check the lubrication
point and lubricate when necessary.

Note:

When opening the units and cleaning them, be sure not to damage parts and paper detectors, disconnect
wires, or unplug connectors.

Removing Foreign Matter When the Cutter Locks

Follow the procedures below to remove foreign matter when the cutter of the printer module
locks.

After rotating the

motor

in reverse so that the

movable cutter blade, full

returns to the home

position, shut off the current to the

motor

; then remove any foreign matter. (See Figure 2-20 on

page 14 in Chapter 2 for checking the home position.)

If the

movable cutter blade, full

fails to return to the home position even after executing the

above procedure, follow the steps below.

1. Shut off the current to the

motor

.

2. Rotate the knob on the

gear, cutter w o rm

with a tool, such as tweezers, so that the

movable cutter blade, full

returns to the home position; then remove the foreign

matter.

Rev. A Maintenance 4-3

EU-T432 Technical Manual

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Inspection

The maintenance and inspection procedures for the printer fall into two categories. One is
“Daily checks” for the printer user, and the other is “Periodic checks” for someone with more
technical knowledge. Maintenance and inspect ion procedures should be carri ed out by properly
qualified personnel.

Daily Checks

Make sure the printer is used properly and kept in good repair. If there are any problems,
correct them using procedures in the table below. The items to be checked are as follows:

Periodic Checks

Every six months, check the items listed in the table below. If there are any problems, correct
them using procedures in the table below.

Table 4-1 Daily Checks

Check item Standard Procedure

Setup status No cables or connectors are

disconnected.

Connect the cables or connectors

properly.
Paper roll is loaded properly. Load the paper properly.
No units or modules such as the paper roll

supply module, the platen unit, the cut
sheet presenter module, the cover, circuit
board are open.

Close the units or the modules.

Paper chips or foreign
matter inside the
product

No paper chips or for eign matter is in side
the product

Remove paper ch ips or foreign matter.

Paper state Specified paper is used. Replace with the specified paper

No discolored or torn paper is used. Replace with a new paper roll.

Table 4-2 Periodic Checks

Check item Standard Procedure

Dust, fuzz, o r di r t st i ck ing
to various parts

No dirt or dus t is on any par t s or collect ed
in the paper path.

Remove dust, fuzz, or dirt with a vacuum

cleaner.

No paper chips or foreign matter is in the
areas such as around the thermal head
heating elements, the cutter, gears,
detectors, and inside the paper path.

• Wipe off dirt an d dust with alcohol.

• Remove foreign matter or paper chips.

• Wipe the platen surface with alcohol

when paper chips have accumulated.

Lubrication stat u s Lubri c at io n is sa ti s fac t ory . Lubricate the lubric at io n points if

required.

Operating status

• Printing, paper feeding and issuing

operation s perform properly.

• No abnormal sound

• All other functions perform properly and

parts are not deformed or worn.

See “Troubleshooting” on page 5-2.

4-4 Maintenance Rev. A

Confidential

Lubrication

Lubrication is particularly important in keeping the printer operating properly as long as
possible. Therefore, lubricate at prescribed intervals, using the correct lubricants.

Lubricant

The performance and durability of the printer are greatly affected by the lubricant applied.
Therefore, pay careful attention to lubricant specifications, especially for the low temperature
characteristics. The lubricants for t he printer are chosen based on tec hnica l in fo rmat ion ana lysis
and tests on various lubricants by EPSON. The lubricants are available in 40 cc (gr.) plastic
containers (the minimum supply unit). Both G-36 and G-15 are used on this printer.

Lubrication Standards

Lubricate the printer in the following situations:

❏ Lubricant is wiped off during cleaning.
❏ Lubricant is wiped off when disassembly or assembly is performed.

When lubricating parts during assembly of the printer, clean parts before lubricating them.
Refer to the next section and “Lubrication Diagram” at the end of this manual for the lubricants
and the lubrication points .

Lubrication Point

The lubrication points are as follows:

Note: The lubrication point numbers in the table are the same as those in the lubrication diagrams at the end of this manual.

Table 4-2 Lubrication Point

Module Number Lubrication point

Lubrication

type Amount of lubricant

Printer
module

1 Two points where the screw on the

lock lever

is

secured

G-15 1 mm-diameter

lubricant

2 to 7 The seven points where the gears on the

autocutter

are engaged with other parts.

G-36 Appropriate quantity

8 The oval hole on the

movable cutter blade

(Two points)

G-15 1 mm-diameter

lubricant

9 The two points where the

cutter frame

contact the

fixed blade

.

G-15 1 mm-diameter

lubricant

10 The two points where the shaft of the

movable

cutter blade

rotates.

G-15 Appropriate quantity

11 The dowels where the platen unit rotates. G-36 Until the dowels are

covered.

12 The points where the

frame assembly

contacts the

lock lever assembly

.

G-15 1 mm-diameter

lubricant

fixing plate,

printer

13 Two points where the cut sheet presenter module

turns

G-36 Appropriate quantity

Cut sheet
presenter

module

14 The gear on the paper feed motor G-36 Appropriate quantity

Rev. A Maintenance 4-5

EU-T432 Technical Manual

Confidential

Lubricant List

Tools

Table 4-3 Lubricant List

Type Name Quantity Commercial availability

Grease

G-15 40 gr

Epson exclusive product

Grease G-36 40 gr

Table 4-4 Tool List

Tool name Commercial availability

Brush #1 Yes
Cleaning brush Yes
Crosshead screwdriver #0, 1 and 2 Yes

ET holder No. 1.5, 2, 2.5, 3, 3.5 and 4

Yes

Tweezers Yes
Diagonal cutting nippers

Yes

Pliers

Yes

Electric solder iron

Yes

Wrist band

Yes

Table 4-5 Measuring Equipment List

Name Standard

Multimeter DC vol ta ge: 400 V max.

Resistanc e: measurable

Oscilloscope 500 MHz with storage

Rev. A Repair 5-1

EU-T432 Technical Manual

Confidential

Chapter 5

Repair

Repairs are divided into two levels (A and B) in consideration of the degree of difficulty of
repair. The person who repairs the printer should perform the proper repair procedures,
depending on the individual technical knowledge and skills.

Repair Levels

Repair Procedure

When problems occur, check the condition of the printer and locate the cause of the problem as
outlined in “Troubleshooting Table.” Then repair the unit properly. The table consists of the
following five sections.

Level A: Requires general knowledge of the printer’s operation

principles and structure but does not require specialized
experience.

Level B: Requires a certain degree of knowledge of the printer’s

operating principles and structure as well as skills and
experience using special tools for disassembly and assembly
of the printe r.

Phenomenon Find the type of problem in this column.
Condition Check the condition of malfunction by referring to this

column.

Cause Locate the cause of the problem by referring to this column.

Also, the repair level is indicated for each cause; use this
indicatio n to determine the method of repair.

Where/ how to check The mechanisms that may cause problems as well as

checkpoints are listed in this column. Check the unit as
outlined in this column to locate the malfunctioning section.

Procedure Repair malfunctioning sections as indicated in this column. If

the same problem or phenomenon reoccurs af ter the specified
repair is performed, check other items in t he “Cause” col umn
and repair the unit again.

5-2 Repair Rev. A

Confidential

Troubleshooting

Use troubleshooting procedures in the table below when problems occur.

Table 5-1 Troubleshooting

Phenomenon Condition Cause Level Where/how to check Procedure

No
performance

Power (24 V) is
not supplied

Power connector is
disconnected.

A See if the power

connector is
connected properly.

Connect the power
connector again.

POWER LED is not
lit.

Fuse (F1) is blown.

B Check with a tester if

the fuse (F1) on the
control circuit board is
conductive.

•Replace the blow n
fuse.

•Replace the
control circuit
board if there is no
recovery after the
fuse replacement.

PAPER LED is lit. Paper out error (1) Paper is not

loaded in the
printer.

A Check if the paper is

loaded.

Load the paper in
the printer.

(2)Only a small

amount
remaining on

the paper roll
(paper NE
detected)

A Check the amount of

the paper remaining in
the paper supply
module.

Replace the paper
roll if only a small
amount of the
paper remaining is
left.

PAPER LED is
not lit even
when the
paper is out.

Paper detector
failure

(1)Paper chips or

foreign matter is
jammed around
the paper
detector.

A

Check whether paper
chips or foreign matter
is jammed around the
paper detector.

Remove the paper
chips or foreign
matter if there is
any.

(2)Paper chips or

foreign matter is
jammed around
the paper NE
detector.

A

Check whether paper
chips or foreign matter
is jammed around the
paper NE detector.

Remove the paper
chips or foreign
matter if there is
any.

PAPER LED is lit
even when the
paper is not
out.

Paper detector
failure

(1) Paper NE

connector is

disconnected.

A

Check if the paper NE
detector is connected
properly.

Connect the
connector properly
if it is disconne cted.

(2)Paper NE

detector is
damaged.

B Chec k t he paper NE

detector function with
an oscilloscope.

Replace the paper
NE detector if it is
damaged.

(3)Paper detector is

disconnected .

A Check if the paper

detector is connected
properly.

Connect the
connector properly
if it is disconne cted.

(4)Printer detector

is damaged.

B Check t he paper

detector function with
an oscilloscope.

Replace the paper
detector if it is
damaged.

(5)Printer FFC is

disconnected.

A Check if the printer FFC

is connected properly.

Connect the FFC if it
is disconnected.

Rev. A Repair 5-3

EU-T432 Technical Manual

Confidential

PAPER LED is
flashing.

Self test standby
state

Self test is in the
standby state

A Check if the self test

printing is completed.

Press paper feeding
SW on the control
circuit board to
complete the self
test when not
completed.

ERROR LED is
flashing.
(For the LED
flashing
patterns , see
“Error LED” on
page 3-12.)

Print head high
temperature
error

The head
temperature has
reached at 75°C or
more.

A −

−

(When the head is
cooled down to
70°C or less, the unit
will recover
automatica lly .)

ERROR LED is
flashing
(For the LED
flashing
patterns , see
“Error LED” on
page 3-12.)

Platen open error The platen is open. A

Check if the platen is
not open.

Close the platen
when it is open.

Platen open is
not detected.

The platen open
detector is
damaged.

B Check the platen open

detector function with
an oscilloscope.

Replace the
detector if it is
damaged.

Autocutter error (1)Paper chips or

foreign matter is
inside the
autocutter and
has locked it.

B Check whether paper

chips or foreign matter
is jammed inside th e
autocutter.

After turning off the
power, remove
paper chips or
foreign matter; then
turn on the power.

(2)The internal

function of the
autocutter is
damaged.

B Che ck the power

supply voltage.

Replace the
autocutter if the
power supply
voltage is normal.

Black mark
detection error

(1)No black mark is

printed.

A Check if the paper is

printed with a black
mark.

Replace with the
black mark printed
paper.

(2)The wrong side

of the paper is
used.

A Check if the correct

side of the paper is
used.

Replace with the
paper with the
black mark on the
correct side.

(3)The black mark

detector is
damaged.

B Che ck the black mark

detector function with
an oscilloscope.

Replace the
detector if it is
damaged.

(4)Paper chips or

foreign matter is
jammed around
the black mark
detector.

A

Check whether paper
chips or foreign matter
is jammed around the
black mark detec t or.

Remove the paper
chips or foreign
matter if there is
any.

Table 5-1 Troubleshooting

Phenomenon Condition Cause Level Where/how to check Procedure

5-4 Repair Rev. A

Confidential

Printing
operation does
not work.

Nothing is
printed.

(1) The head FFC

connection
failure

A Check whether the

head FFC is connected
properly.

Connect the head
FFC properly.

(2)The head FFC

signal line is
broken.

A See or check with an

oscilloscope whether
there is damage or
break of the head FFC.

Replace the head
FFC if it is broken.

(3)Head input pulse

failure

B

Check with an
oscilloscope whether
the input pulse is within
the specified range.

If the input pulse is
abnormal , re pla c e
the control circuit
module.

(4)Head failure

(Dr.IC, etc.)

B

If the input pulse is
normal, replace the
thermal head.

Dots are missing
continuously.

(1)Foreign matter is

attached to the
head heating
elements

A

See if anything is wrong
with the head heating
elements

Clean the head
heating elements if
foreign matter
attached.

(2)The head

heating
elements are
damaged.

A Replace the thermal

(3)Head failure

(Dr.IC, etc.)

B

Check with an oscillo­scope if the inpu t pulse
is within the specified
range.

If the input pulse is
normal, replace the
thermal head.

Dots are missing
occasionally.

(1)Foreign matter

is on the surface
of the platen.

A Check the surface of

the plate n with an
oscilloscope or a
magnifier.

Clean the surface of
the platen if foreign
matter is attached
to it.

(2)The platen

surface is
deformed.

A

Replace the platen
if there is any
damage on the
platen surface.

Table 5-1 Troubleshooting

Phenomenon Condition Cause Level Where/how to check Procedure

Rev. A Repair 5-5

EU-T432 Technical Manual

Confidential

Printing is faint. All printing color is

faint.

Printing dens ity
setting is set to light.
(The color sensitiv ity
difference
depending on the
paper)

B •Check the printing

density setting of the
control circuit module.

•Check if the specifie d
paper is used.

Change the setting
of the printing
density to darken.

All or some part
of printing is faint.

(1)Dirt or foreign

matter attaches
to the head
heating
elements.

A See or check the head

heating elements with
a magnifier.

Clean the head
heating elements if
foreign matter is
attached to the
elements.

(2)Thermal

sensitivity has
deteriorated
due to paper
deterioration

A Check whether the

paper has
deteriorated.

Replace the
deteriorated paper.

(3)Therma l head
heating

elements are
defective.

B Check the surface of

the thermal head with
a magnifier.

Replace the thermal
head.

Printing is partly
faint.

Damage or
deformation of th e
platen surface

A See or check with a

magnifier the platen
surface.

Replace the platen
if the platen surface
is damaged or
deformed.

Abnormal or
incorrect
printing

Abnormal or
incorrect printing

(1)Thermal head
input pulse
failure

B

Check with an oscillo­scope if t h e input pul se
is within the specified
range.

If the input pulse is
abnormal, replace
the control circuit
board.

(2)Therma l head

failure
(Dr.IC, etc.)

B

If input pulse is
normal, replace the
thermal head.

Paper cannot
be inserted.

Paper cannot be
inserted into the
printer module.

(1)Paper chips or

foreign matter is
in the paper
guide of the
printer module.

A Check whether pa per

chips or foreign matter
is inside the paper
guide.

Remove paper
chips or foreign
matter if th ere is
any.

(2)Paper detector

on the paper
guide of the
printer module i s
defective.

B Check if the detector

operates properly.

•Remove paper
chip or foreign
matter if the re is
any.

•Replace the
detector if it is
damaged.

(3)The shape of the

paper edge is
not like the

specified one.

A Check if the paper

edge is cut properly.

Cut the paper edge
properly.

Table 5-1 Troubleshooting

Phenomenon Condition Cause Level Where/how to check Procedure

5-6 Repair Rev. A

Confidential

Paper is not
fed.

Paper is not fed
smoothly.

(1)The paper roll

supply module
does not
oscillate
properly.

B Check if the paper is

pulled out smoothly.
(The paper tension
loading should be les s
than the rating value.)

•Load the paper
properly.

•Replace the paper
roll supply module if
the oscillation
loading of the
paper supply
module is
excessive.

(2) The paper size is
not correct.

A Check the paper

diameter, width, and
thickness.

Use the specified
paper.

Paper is not fed.

(1)Abnormal input

signal or paper
feed motor
failure

B Che ck the power

supply voltage, input
signal, and operation
of each paper feed
motor.

•Replace the
control circuit
board module if
there is any
problem with the
power supply
voltage, input
signal.

•Replace the motor
if there is any
problem with the
motor operation.

(2)The paper feed

connector is
disconnected.

A

Check if each paper
feed motor is
connected properly.

Connect the
connector properly.

(3)Power

transmission parts
(gears) are
damaged, or
foreign matter is
caught between
gears.

B

•Check the power
transmission state of
each gears.

•Check if no foreign
matter is caught
between geas.

•Replace damaged
gears.

•Remove foreign
matter if there is
any.

Paper feeding
pitch is
defective.

The character
spacing is not
uniform.

(1)The paper roll

supply module
does not
oscillate
properly.

B Check if the paper is

pulled out smoothly.
(The paper tension
loading should be les s
than the rating value.)

•Load the paper

properly.

•Replace the paper

roll supply module if
the oscillation
load of the paper
supply module is
excessive.

(2)Power

transmission parts
(gears) are
damaged, or
foreign matter is
caught between
gears.

B

•Check the power
transmission state of
each gear.

•Check if no foreign
matter is caught
between gears.

•Remove foreign
matter if th ere is
any.

•Replace damaged
gears .

Table 5-1 Troubleshooting

Phenomenon Condition Cause Level Where/how to check Procedure

Rev. A Repair 5-7

EU-T432 Technical Manual

Confidential

Paper feeding
pitch is
defective.

The character
spacing is not
uniform.

(3)Abnormal input

signal or paper
feed motor
failure

B Che ck the power

supply voltage, input
signal, and operation
of each paper feed
motor.

•Replace the
control circuit
board module if
there is any
problem with the
power supply
voltage, input
signal.

•Replace the motor
if there is any
problem with the
motor operation.

(4)Paper feed slip

due to the
platen wear and
paper powder

B Check the friction f orce

of the platen surface.

•Clean the platen if
paper powder
accumulates o n it .

•Replace the platen
if it is worn out.

Paper cannot
be cut.

Paper is not cut
automatically.

(1)Foreign matter

inside the
autocutter

A Check whether foreign

matter is inside the
autocutter.

Remove foreign
matter if there is
any.

(2)Abnormal input

signal or inner
mechanism
damage of the
autocutter

B Che ck the power

supply voltage, input
signal, and operation
of the cutter motor.

•Replace the
control circuit
board module if
there is any
problem with the
power supply
voltage, input
signal.

•Replace the motor

if there is any
problem with the
autocutting
operation.

Platen unit can
not open/
close.

Platen unit do es
not open.

The cutter blade is
not in the home
position.

B Check if the cutter

blade is in the home
position.

Turn the knob to
return the cutter
blade to the home
position.

Platen unit do es
not close.

Foreign matter
inside the printer.

A Check whether foreign

matter is inside the
printer.

Remove foreign
matter if there is
any.

Table 5-1 Troubleshooting

Phenomenon Condition Cause Level Where/how to check Procedure

Rev. A Assembly and Disassembly 6-1

EU-T432 Technical Manual

Confidential

Chapter 6

Assembly and Disassembly

Small Parts Abbreviation

All small parts are represented by the abbreviations listed below

Table 6-1 Small Parts Abbreviations

記号

記号記号

記号 部品名称

部品名称部品名称

部品名称

R.E Retaining ring E-type
C-ring Crescent ring
C.B. (M2 × 2.5) Cross-recessed binding head machine screw, 2 × 2.5, F/Zn
C.B. (M2 × 3) Cross-recessed bin d in g head mac hi ne screw, 2 × 3, F/Zn
C.B. (M2.3 × 3) Cross-recessed bin d ing head mac hine screw, 2.3 × 3, F/Zn
C.B. (M2.5 × 4) Cross-recessed bin d ing head mac hine screw, 2.5 × 4, F/Zn
C.B. (M3 × 4) Cross-recessed bin d in g head mac hi ne screw, 3 × 4, F/Zn
C.B.(M3 × 6) Cross-recessed binding head machine screw, 3 × 6, F/Zn
C.B.(M3 × 8) Cross-recessed binding head machine screw, 3 × 8, F/Zn
C.B.(M4 × 16) Cross-recessed binding head machine screw, 4 × 16, F/Zn
C.B.B-tite (M2 × 6) Cross-resessed binding he ad B-tite self tapp in g screw, 2 × 6, F/Zn
C.B.P-tite (M3 × 8) Cross-resessed binding hea d P-tite self tapping s crew, 3 × 8, F/Zn
C.B.S-tite (M2.5 × 4) Cross-recessed binding head S-tite se lf tapping screw, 2 .5 × 4, F/Zn
C.B.S-tite (M3 × 5) Cross-rec e s s ed binding head S-tite self ta pping screw, 3 × 5, F/Zn
C.B.S-tite (M3 × 12) Cross-recessed bi n ding head S-ti te self tapping scr e w, 3 × 12, F/Zn
C.C.P-tite (M2.5 × 6) Cross-resessed cup head P-tite self tapping screw, 2.5 × 6, F/Zn
C.F. (M3 × 8) Cross-resessed flat head screw, 3 × 8, F/Zn
C.P-tite F screw (M2 × 3) Cross-resessed 3P-tite self tapping sc rew F, 2 × 3, F/Ni
C.P (P2) Cross-recessed pan head screw, 3 × 6, F/Zn
C.P (S-P1) (M1.6 × 5) Cross-recessed pan head screw with S.W.+P.W.1, 1.6 × 5, F/Zn
C.P. (M2 × 2) Cross-recessed pan head screw-3, 2 × 2, F/Ni
C.P. (M2 × 6) Cross-recessed pan head machin e screw, 2 × 6, F/Zn
H. nut (3) Hexagonal nut double chamfered, 3, F/Zn
H. nut (4) Hexagonal nut double chamfered, 4, F/Zn
P. washer (4.3 ×0.8 × 8) Plain washer (4.3 ×0.8 × 8)
P. washer (3 ×0.5 × 7) Plain washer (3 ×0.5 × 7)
P. washer (3.7 ×0.5 × 8) Plain washer (3.7 ×0.5 × 8)
Conical S. washer-1L, 4 Conical spring washer, Class 1, light load, 4, S/Na
S. washer-2, 4 Spring washer No.2, 4, F/Zn

6-2 Assembly and Disassembly Rev. A

Confidential

Disassembly

❏ For disassembly, follow the assembly procedures described in “Assembly” in r everse

sequence.

❏ Disassembly of the modules beyond the level show in the exploded diagrams at the end of

this manual may result in dama ge to the module s and their function s.

Assembly

❏ The assembly process is divided into pre-assembly and main assembly. First perform the

pre-assembly; then proceed to the main assembly after the components have been
assembled into units.

❏ Perform assembly while referring to the component shapes and mounting positions shown

in the exploded diagrams at the end of this manual.

❏ The ★ symbols in the “Reassembly step” indicate places where checks are required. Make

sure to follow the instructions given in these places.

❏ Circled numbers in the “Reassembly step” indicate that lubrication is required during the

reassembly of that component and that such lubrication will be difficult unless performed
during reassembly.

❏ Refer to “Lubric ation” in Chapt er 4 for lubrication details on th e printer module and other

modules. Also, see the lubrication diagrams at the end of this manual for the places to
lubricate.

In this assembly section, assembly steps are described as the following sequence:
❏ Installation of the printer module (Pre-assembly A to F and Main Assembly A to L {page 3 to

29})

❏ Installation of th e other modules (Pre-assembly A to H and Main Assembly A t o E {page 30

to 57})

The Main assembly A to E in the other modules’ assembly is the assembly for the all pre­assembled modules including the printer module.

Rev. A Assembly and Disassembly 6-3

EU-T432 Technical Manual

Confidential

Installation of the Printer Module

Pre-assembly A: Paper guide,straight, back unit

Reassembly

step

Part name Assembly procedure

1

Paper detector assembly

2

Paper guide, straight, back

❏ Slide the

paper detector assembly

onto the

paper guide, straight, back

.

★

<Check>

❏

Make sure that the

paper detector asse mbly

is installed securely, as shown

below.

paper detector
assembly

paper guide, straight, back

Install securely.

6-4 Assembly and Disassembly Rev. A

Confidential

Pre-assembly B: Frame, platen, straight unit, B

Reassembly

step

Part name Assembly procedure

1

Frame, platen

2

Lock lever assembly
C.B.B-tite (M2

×

× ×

×

6)

× 1

❏

Install the

lock lever assembly

on the

frame, platen

, and secure it with a

screw.

★

<Check>

❏

Tightening torque: 294 to 343 mN•m {3.0 to 3.5 kg•cm}

❏

Make sure that the screw does not skew during tightening.

3

Cover, fixed blade

4

Fixed blade

❏

Install the

cover, fixed blade

and the

fixed blade

on the

frame, platen

;

then secure them with

shouldec

s.

5

Spring, fixed blade
Shouldec (2

×

× ×

× 6 ×

× ×

× 2) × 2

At this time, inst al l the

spring, fixed blade

on one of the

shouldec

s, as

shown below.

★

<Check>

❏

Tightening torque: 177 to 226 mN•m {1.8 to 2.3 kg•cm}

❏

Make sure to install the

fixed blade

right-side-up.

❏

Make sure that the dowels on the

frame, platen

fit securely into the holes

on the

cover, fixed blade

.

❏

Make sure to install the

spring, fixed blade

in the correct position.

C.B.B-tite (M2 × 6)

lock lever assembly

frame, platen

shouldecs

spring, fix e d blade

fixed blade

mounting dowels

cover, fixed blade

frame, platen

Rev. A Assembly and Disassembly 6-5

EU-T432 Technical Manual

Confidential

Pre-assembly B

Reassembly

step

Part name Assembly pr oc edure

6

Push plate, platen, B
C.C.P-tite (M2.5

×

× ×

×

6)

× 1

❏

Install the

push plate, platen, B

to the

frame, platen

and secure it with a

screw.

★

<Check>

❏

Tightening torque: 490 to 539 mN•m {5.0 to 5.5 kg•cm}

7

Spring, lock lever

❏

Hook the ends of the

spring, lock lever

onto the

lock lever assembly

and

C.B.B-tite (M2

×

× ×

×

6)

from the inside of the

frame, platen

.

★

<Check>

❏

Make sure that the

spring, lock lever

is hooked securely.

push plate, platen, B

frame, platen

C.C.P-tite (M2.5 × 6)

C.B.B-tite (M2 × 6)

spring, lock leve r

lock lever assembly

frame, platen

6-6 Assembly and Disassembly Rev. A

Confidential

Pre-assembly B

Reassembly

step

Part name Assembly pr oc edure

8

Platen, straight assembly

9

⑩

Bearing, platen
R.E. (2.5)

× 1

❏

After Installing the

platen, straight assembly

to the

frame, platen

, install the

bearing, platen

from the outside of th e

frame, platen

; then secure it with

an

R.E.

❏

Lubricate with G-15 two points where the screw on the

lock lever

assembly

is secured.

platen, straight

assembly

bearing, platen

R.E.(2.5)

bearing,
platen

frame, platen

G-15

Rev. A Assembly and Disassembly 6-7

EU-T432 Technical Manual

Confidential

Pre-assembly C: Cutter motor assembly

Reassembly

step

Part name Assembly procedure

1

Microswitch

2

Lead wire, paper cutter

❏

Solder the white lead wire of the

lead wire, paper cutter

to the

microswitch

.

3

Cutter motor sub-assembly

❏

Solder the red wire of the

lead wire, paper cutter

to the red marked

terminal side of the

cutter motor sub-assembly

, and solder the black lead

wire to the other terminal.

★

<Check>

❏

Make sure to arrange the lead wires properly .

microswitch

white

lead wire, paper cutter

black

red

*No polarity

red mark

red

black

lead wire,
paper cutter

cutter motor

sub-assembly

6-8 Assembly and Disassembly Rev. A

Confidential

Pre-assembly D: Cutter, cover sub-unit

Reassembly

step

Part name Assembly procedure

1

Cutter, cover sub-assembly

②

Gear, cutter worm

❏

Lubricate with G-36 the bore of the

gear, cutter worm

and the point

where the

gear, cutter worm

comes in contact the

cutter, cover sub-

assembly

; then install it on th e

cutter, cover sub-assembly.

③

Gear, reduction A/C

4

Washer, clutch

5

Spring, cutter clutch

❏

After lubricating the bore of the

gear, reduction A/C

with G-36, attach the

washer, clutch

and the

spring, cutter clutch

to the

gear, reduction

A/C

; then, install it to the

cutter cover sub-assemb ly

.

★

<Check>

❏

Make sure not to damage the clutch teeth when installing the

gear,

reduction A/C

.

gear, cutter worm

G-36

cutter, cover sub-assembly

G-36

G-36

clutch teeth

G-36

G-36

washer, clutch

spring, cutter clutch

gear, reduction A/C

cutter, cover sub-assembly

Rev. A Assembly and Disassembly 6-9

EU-T432 Technical Manual

Confidential

Pre-assembly D

Reassembly

step

Part name Assembly procedure

6

Shaft, reduction A/C

❏

Insert the

shaft, red uct i on A/ C

to the bores of the

gear, reduction A/C

and

the

gear, cutter worm

.

★

<Check>

❏

Make sure that the

shaft, reduction A/C

is oriented properly before

insertion.

7

Cutter, motor assembly
C.B.(M2

×

× ×

×

2.5)

× 1

Screw, switch

❏

Install the

cutter, motor

to the

cutter cover sub-ass em b ly

, and secure it

with the

C.B.(M2

×

× ×

×

2.5).

❏

Install the

microswitch

to the

cutter cover sub-assembly

, and secure it with

the

screw, switch.

★

<Check>

❏

Tightening torque: 245 to 294 mN•m {2.5 to 3.0 kg•cm} (

C.B.(M2

×

× ×

×

2.5)

)

❏

Tightening torque: 108 to 147 mN•m {1.1 to 1.5 kg•cm} (

screw, switch

)

❏

Make sure to install the

cutter, motor

with the labeled side down.

❏

Make sure that the

cutter, motor

is installed sec urely.

❏

Make sure that the dowel on the

microswitch

fits securely in the mounting

hole on the

cutter cover sub-assemb ly

.

shaft, reduction A/C

spring, cutter clutch

gear, reduction A/C

gear, cutter worm

screw, switch

C.B.(M2 × 2.5)

microswitch

cutter motor

cutter cover
sub-assembly

mounting ho le

6-10 Assembly and Disassembly Rev. A

Confidential

Pre-assembly D

Reassembly

step

Part name Assembly procedure

⑧

Cutter drive gear
sub-assembly
Plain washer (3

×

× ×

×

0.5

×

× ×

× 7) × 1

R.E. (2.5)

× 1

❏

After lubricating the shaft on the

cutter cover sub-assemb ly

with G-36,

install the

cutter drive gear sub-assembly

and the

plain washer

on the shaft; then secure them with an

R.E

.

★

<Check>

❏

Make sure not to apply excessive pressure to the

microswitch

actuator

when installing the

cutter drive gear sub-assembly

.

❏

Make sure not to damage the

cutter drive gear sub-assembly

when

securing it with the

R.E.

⑨

❏

Lubricate the specified areas with G-36.

R.E.(2.5)

plain washer

cutter drive gear
sub-assembly

cutter motor

microswitch actuator

G-36

G-36

G-36

G-36

G-36

Rev. A Assembly and Disassembly 6-11

EU-T432 Technical Manual

Confidential

Pre-assembly E: Cutter unit, B

Reassembly

step

Part name Assembly p ro ce d u re

1

Cutter cover sub-uni t

2

Cutter frame assembly
C.B.S-tite (M3

×

× ×

×

5)

× 1

❏

Pass the

lead wire, paper cutter

through the hole on the

cutter frame

assembly

and secure the

cutter cover sub-unit

and the

cutter frame

assembly

with a screw.

❏

When putting the

cutter cover sub-un it

and the

cutter frame assembly

together, insert the

shaft, movable cutter blade drive

into the oval hole

on the

movable cutter blade

.

★

<Check>

❏

Tightening torque: 834 to 932 mN•m {8.5 to 9.5 kg•cm}

❏

Make sure that the

shaft, movable cutter blade drive

fits securely into the

oval hole on the

movable cutter blade

.

❏

Make sure that the edges of the

cutter cover sub- uni t

fit into the hooks on

the

cutter frame assembly

.

C.B.S-tite (M3 × 5)

oval hole

lead wire, paper
cutter

cutter cover, sub-unit

cutter frame assembly

shaft, movable cutter
blade drive

hook

hook

cutter frame assembly

shaft, movable cutter

blade drive

oval hole

cutter cover, sub-unit

cutter cover, sub-unit

6-12 Assembly and Disassembly Rev. A

Confidential

Pre-assembly E

Reassembly

step

Part name Assembly p ro ce d u re

3

Emergency cutter, full, B
C.B.(M2

×

× ×

×

2.5)

× 2

❏

Install the

emergency cutter, full, B

to the

cutter cover sub-unit

with

screws.

★

<Check>

❏

Tightening torque: 98 to 147 mN•m {1.0 to 1.5 kg•cm}

❏

Make sure that the dowels on the

cutter cover sub-unit

is fitted in the holes

on the

emergency cutter, full, B

.

4

Plate, A/C assembly

❏

Peel the backing off of a couple-face tape .

❏

Hook the bent part of the

plate, A/C

to the edge of the

cover, cutter

.

❏

Align parts A and B with the holes on the

plate, A/C

as shown below, and

stick the plate to the cutter cover sub-unit.

C.B.(M2 × 2.5)

mounting
position

emergency cutter, full, B

plate, A/C

cutter cover sub unit

A

B

Rev. A Assembly and Disassembly 6-13

EU-T432 Technical Manual

Confidential

Pre-assembly F: Black mark detector sub-assembly (option)

Reassembly

step

Part name Assembly p ro ce d u re

1

Black mark (B.M.) sub ­assembly

2

Paper guide
C.P-tite F screw (M2

×

× ×

× 3)

× 1

❏

Install the

B.M. detector sub-assembly

in one of the two detector

mounting holes on the

paper guide

, and secure it with a screw. Both the

straight path and the curv ed path types can be installed this wa y.

★

<Check>

❏

Tightening torque: 167 to 186 mN•m {1.7 to 1.9 kg•cm}

❏

Make sure that the detector fits securely into the detector mounting hole

on the

paper guide

.

C.P-tite. F screw (M2 × 3)

B.M. detector sub -assembly

paper guide

mounting hole

6-14 Assembly and Disassembly Rev. A

Confidential

Main Assembly A: Motor, paper feed, receipt, B and Platen detector

Reassembly

step

Part name Assembly procedure

1

Frame assembly

2

Motor, paper feed, receipt,
B
C.B.S-tite (3

×

× ×

×

5)

× 2

❏

Align the

motor, paper feed, receipt, B

with the mounting position on the

frame assembly

and secure it with scerws.

★

<Check>

❏

Tightening torque: 834 to 932 mN•m {8.5 to 9.5 kg•cm}

❏

Make sure that the

motor, paper feed, receipt, B

is oriented properly

.

3

Platen detector assembly
C.P. (1.6

×

× ×

×

5)

× 1

❏

Align the

platen detector assembly

to the mounting position on the

frame

assembly

, and secure it with a screw.

motor, paper feed, receipt, B

C.B.S-tite (3 × 5)

frame assembly

frame assembly

platen detector
assembly

C.P. (1.6 × 5)

Rev. A Assembly and Disassembly 6-15

EU-T432 Technical Manual

Confidential

Main Assembly A

Reassembly

step

Part name Assembly procedure

★

<Check>

❏

Tightening torque: 147 to 196 mN•m {1.5 to 2.0 kg•cm}

❏

After installing the

platen detector assembly

, arrange the lead wires.

lead wires

6-16 Assembly and Disassembly Rev. A

Confidential

Main Assembly B: Paper guide, straight, front and Paper guide, straight, back unit

Reassembly

step

Part name Assembly p ro ce d u re

1

Paper guide, straight, front

2

Pin, guide, straight

× 2

❏

Insert the

pin, guide, straight

into the holes on the

paper guide, straight,

front

.

3

Paper guide, straight, back
unit
C.B. (2.5

× 4

× 4 × 4

× 4

)

× 2

❏

After putting the

paper guide, straight, front

and the

paper guide, straight ,

back unit

together, install them to the mounting holes on the

frame

assembly

and secure them with screws.

paper guide, straight, front

pin, guide, straight

C.B. (M2.5 × 4)

frame, assem bly

paper guide, straight,

back unit

mounting hole s

paper guide, straight, front

Rev. A Assembly and Disassembly 6-17

EU-T432 Technical Manual

Confidential

Main Assembly B

Reassembly

step

Part name Assembly p ro ce d u re

★

<Check>

❏

Tightening torque: 441 to 490 mN•m {4.5 to 5.0 kg•cm}

❏

The dowels on t h e

paper guide, straight, back unit

fit securely into the

holes on the

frame assembly

.

❏

Make sure that the lead wires of the

paper detector assembly

are not

caught between the

frame assembly

and the

paper guide, straight,

back unit

.

❏

Make sure that the wires of the

paper detector assembly

are passed

under the hook on the

paper guide, straight, back unit.

hook

paper guide, straight,
back unit

6-18 Assembly and Disassembly Rev. A

Confidential

Main Assembly C: Frame, platen, straight unit

Reassembly

step

Part name Assembly p ro ce d u re

➀

❏

Lubricate the dowel on the

frame assembly

with G-36.

➁

❏

Lubricate the point where the

frame assembly

contacts with the

lock

lever assembly

with G-15.

3

Frame, platen, straight unit,
B

❏

Install th e

frame, platen, straight unit, B

to the

frame assembly

.

4

Shaft, frame platen
R.E (1.5)

× 1

❏

Align the holes on the

frame assembly

and the

frame, platen, straight unit

,

and insert the

shaft, frame platen

into these holes; then, secure it with an

R.E

.

5
6

Lever, platen
Spring, lever

❏

Install the

spring, lever

on the

lever, platen

, as shown below.

frame, platen,
straight unit, B

dowel

frame assembly

G-36

point where the frame

assembly contacts with
the lock lever assembly

G-15

G-15

R.E (1.5)

shaft, frame platen

longer edge

shorter edge

spring, lever

lever, platen

Rev. A Assembly and Disassembly 6-19

EU-T432 Technical Manual

Confidential

Main Assembly C

Reassembly

step

Part name Assembly procedure

★

<Check>

❏

Hook the longer edge of the

spring, lever

into the groove on the

lever,

platen

.

❏

Make sure not to deform the

spring, lever

.

7

R.E. (2)

× 1❏ Install the

lever, platen

to the

shaft, frame platen

, and secure it with an

R.E.

.

★★★★

<Check>

❏

Make sure that the

shaft, lock lever

is placed properly into the specified

position on the

lever, platen

.

8

❏

Remove the longer edge of the

spring, lever

, and hook it on the

shaft,

lock lever

.

groove

longer edge

shaft, frame platen

lever, platen

R.E. (2)

shaft, lock lever

shaft, lock lever

lever, platen

longer edge of the spring, lever

shaft, lock lever

6-20 Assembly and Disassembly Rev. A

Confidential

Main Assembly D: Thermal print head assembly

Reassembly

step

Part name Assembly procedure

1

Thermal print head
assembly

❏

Install the

thermal print head assembly

in the grooves on the

frame

assembly

.

★

<Check>

❏

When handling the

thermal print head assembly

, use proper bo dy
grounding procedures to avoid static electricity.
(Use a conductive mat and wrist band during assembly.)

❏

Do not touch the connector te rmina ls and th e sur face o f th e

thermal print

head assembly

. If foreign matter attaches to them, wip e off th e foreign

matter lightly, usin g a cott on swab dampened wit h a lco hol.

thermal print head

assembly

frame assembly

Rev. A Assembly and Disassembly 6-21

EU-T432 Technical Manual

Confidential

Main Assembly E: Plate, pressure spring

Reassembly

step

Part name Assembly procedure

1

Plate, pressure spring

2

Circuit board assembly
C.B.S-tite (M2.5

×

× ×

×

4)

× 1

❏

Install the

circuit board

to the

plate, pressure spring

, and secure it with

screws.

★

<Check>

❏

Tightening torque: 608 to 657 mN•m {6.2 to 6.7 kg•cm}

3

Spring, press head

× 2❏ Install the

spring, press head

to the

plate, pressure spring

.

★

<Check>

❏

Make sure that the

spring, press head

is pushed securely into the

plate,

pressure spring

.

4

❏

Hook the edge of the

spring, press head

to the groove of the

thermal print

head assembly

while pushing the

plate, pressure spring

in the arrow

direction; then hook it to the groove of the

frame assembly

.

plate, pressure spring

C.B.S-tite (M2.5 × 4)

circuit board
assembly

spring, press head

plate, pressure spring

groove of the thermal

print head ass embly

spring, press head

groove of the frame
assembly

groove of the
frame assembly

6-22 Assembly and Disassembly Rev. A

Confidential

Main Assembly E

Reassembly

step

Part name Assembly p ro ce d u re

★

<Check>

❏

Make sure that the lead wires, such as those for the

paper detector

assembly

are not caught on anything when installing the

spring, press

head

.

❏

Make sure that the lead wires of the

paper detector assembly

and the

paper detector assembly

are passed under the

plate, pressure spring.

❏

Make sure that the edge of the

spring, press head

fits securely into the

groove on the

thermal print head assembly

.

❏

Make sure that the

plate, pressure spring

is hooked securel y into the hole

on the

frame assembly

.

lead wires

plate, pressure spring

spring, press head

thermal print head
assembly

plate, pressure spring

frame assembly

Rev. A Assembly and Disassembly 6-23

EU-T432 Technical Manual

Confidential

Main Assembly F: Fixing plate, the Gear, reduction and G ea r, idler

Reassembly

step

Part name Assembly procedure

1

Fixing plate
C.B.S-tite (M3

×

× ×

×

5)

× 1

❏

Install the

fixing plate

to the

frame assembly

, and secure it with the screw

while pushing the edge of the

fixing plate

to the

bearing, platen

.

★

<Check>

❏

Tightening torque: 834 to 932 mN•m {8.5 to 9.5 kg•cm}

❏

Make sure that the edge of the

fixing plate

is pushed securely to the

bearing, platen

.

2

Gear, reduction

3

Gear, idler
R.E. (2.5)

× 2

❏

Install the

gear, reduction

and the

gear, idler

to the shafts on the

frame

assembly

, and secure th em with

R.E.

s.

★

<Check>

❏

Make sure not to deform the shaft on the

frame assembly

when securing

with the

R.E.

C.B.S-tite (M3 × 5)

bearing, platen

fixing plate

frame assembly

R.E. (2.5)

gear, reduction

gear, idler

frame assembly

shafts

6-24 Assembly and Disassembly Rev. A

Confidential

Main Assembly G: Cutter unit

Reassembly

step

Part name Assembly procedure

1

Cutter unit, B
C.B.S-tite (M3

×

× ×

×

5)

× 2

❏

Install the

cutter unit, B

to the

frame assembly

and secure it with screws,

while the

lead wire, paper cutter

is passed through the hook on the

frame

assembly

.

★

<Check>

❏

Tightening torque: 834 to 932 mN•m {8.5 to 9.5 kg•cm}

❏

Make sure that the

lead wire, paper cutter

is passed through the hook on

the

frame assembly

properly as sh own above.

❏

Make sure that the

lead wire, paper cutter

is not caught between any

places when securing the

cutter unit.

❏

Install the

cutter unit, B

in the platen-up state.

②

❏

Lubricate the point where the

fixed blade

of the

cutter unit, B

contacts the

cutter frame

with G-15.

C.B.S-tite (M3 × 5)

frame assembly

lead wire, paper cutter

cutter unit

platen

G-15

G-15

cutter unit, B

Rev. A Assembly and Disassembly 6-25

EU-T432 Technical Manual

Confidential

Assembly H: Arranging the lead wires

Reassembly

step

Part name Assembly procedure

1

❏

Insert the lead wire connectors to the connectors on the

circuit board

.

★

<Check>

❏

Make sure that the connectors are oriented properly when connecting.

❏

Make sure that the connectors are inserted securely.

2

❏

All lead wires should be pa ssed through the hook o n th e

frame assembly

,

and arranged inside of th e prin t er.

★

<Check>

❏

Make sure that any of the lead wires are not caught by the projections

(the colored part).

❏

Make sure not to damage the coats of the lead wire s when arr angin g the

lead wires.

variable resistor

connector for the platen detector assembly

connector for the
motor, paper feed,
receipt, B

connector for the
lead wire, paper
cutter

connector for the optional B.M. detector

connector for the paper
detector assembly

hook

projections

6-26 Assembly and Disassembly Rev. A

Confidential

Main Assembly I: Cable, printer and Cable, head

Reassembly

step

Part name Assembly pr oc edure

1

Cable, head

❏

Insert the

cable, head

in the connector on the

thermal print head

assembly

.

★

<Check>

❏

Make sure that the

cable, head

is oriented properly when connecting.

❏

Make sure that the

cable, head

is inserted securely

2

Cable, printer

❏

Insert the

cable, printer

in the connector on the

circuit board assembly

.

★

<Check>

❏

Make sure that the

cable, printer

is oriented properly when connecting.

❏

Make sure that the

cable, printer

is inserted securely.

3

❏

Pull out the

cable, head

and the

cable, printer

as shown below.

connector for the
cable, printer

connector for the
cable, head

cable, head

cable, pri n ter

Rev. A Assembly and Disassembly 6-27

EU-T432 Technical Manual

Confidential

Assembly J: Black mark detector Adjustment

Adjustment

step

Adjustment procedure Adjustment point

1

❏

Connect the FFC terminal No.12 to an

oscilloscope to display the output power voltage
of the B.M. detector on the oscilloscope screen.

2

❏

Input DC5 V to the FFC termi nal No. 13.

3.

❏

Insert a “Kodak Gray Card” into the pape r

entrance.
(“Kodak Gray Card”: A commercially available
card for adjusting exposure.)

❏

Make sure that the gray side of the card is inserted

along the

paper guide

which the

B.M. detector

sub-assembly

is installed.

4.

❏

Adjust the output power voltage of the

B.M.

detector

at 1.74 V using the variable resistor on

the

circuit board assembly

.

❏

Turn the slot on the variable resistor to the right

and the left wit h a t ool s uch as a f lat -he a d dri ve r,
to adjust the output power voltage.

❏

If the reflectance of black marks on the paper is

over 10%, adjust the output voltage to 2 V or
more with a 25% or less reflectance for the black
marks.

.....13 12 11 10 .....

NO.1

NO.15

circuit board

FFC

oscilloscope

DC5 V

GND

B.M. detector
sub-assembly

gray side of the g r ay ca r d

paper guide

<Cross-section>

variable resistor

6-28 Assembly and Disassembly Rev. A

Confidential

Main Assembly K: Cover, cable

Reassembly

step

Part name Assembly procedure

1

❏

Loosen

C.B.S-tite (M3

××××

5)

on the

cutter unit, B

.

2

Cover, cable

❏

Pass the

cable, head

and the

cable printer

through the hole on the

cover, cable

.

3

❏

Attach the

cover, cable

to the mounting position on the

cutter unit, B

, and

tighten

C.B.S-tite (M3

××××

5)

again to secure the

cover, cable

.

★

<Check>

❏

Tightening torque: 834 to 932 mN•m {8.5 to 9.5 kg•cm}

❏❏❏❏

Make sure that the

cover, cable

is attached securely. (

frame, ma i n

)

❏

Make sure that none of the lead wires are caught by any part.

C.B.S-tite (M3 × 5)

cover, cable

cable, printer

cable, head

Rev. A Assembly and Disassembly 6-29

EU-T432 Technical Manual

Confidential

Main Assembly L: Cover, gear

Reassembly

step

Part name Assembly procedure

1

❏

Loosen the lower

C.B.S-tite (M3

××××

5)

that secures the

motor, paper feed,

receipt, B

.

2

Cover, gear

❏

Hook the

cover, gear

to the

frame, main

and the

shaft, frame plat en

while

aligning with the mounting positi on s, and secure it.

★

<Check>

❏

Tightening torque: 834 to 932 mN•m {8.5 to 9.5 kg•cm}

❏❏❏❏

The hooking parts on the

cover, gear

are hooked securely to the

frame,

main

.

C.B.S-tite (M3 × 5)

cover, gear

shaft, frame platen

cover, gear

6-30 Assembly and Disassembly Rev. A

Confidential

Installation of the Other Modules

Pre-assembly A: Frame, paper supply assembly

Reassembly

step

Part name Assembly procedure

1

Frame, paper supply
assembly

× 1

C.B.S-tite (M3

××××

5)

× 2

❏

Secure the

frame, paper supply assembly

with

C.B.S-tite (M3

××××

5)

.

★

<Check>

❏

Tightening torque: 735 to 931 mN•m {7.5 to 9.5 kg•cm}

2

Damper

× 1❏ Stick the

damper

on the

frame, paper supply assembly

.

★

<Check>

Damper position to stick:
Right and left sides: The center from both sides.
Upper and lower sides: Align with the sticking surface on the plate.

damper

C.B.S-tite (M3 × 5)

frame, paper supply
assembly

Rev. A Assembly and Disassembly 6-31

EU-T432 Technical Manual

Confidential

3

C.B (M4

××××

16)

× 1

P. washer (4.3

××××

0.8

××××

8)

× 1

Collar, screw holder

× 1

❏

Attach a

P. washer

(4.3

××××

0.8

××××

8)

and the

collar, screw holder

to a

C.B (M4

××××

16)

screw; then attach the screw to the

frame, paper supply assembly

from out side.

4

Gear, frame open
assembly

× 1

P. washer

(4.3

××××

0.8

××××

8)

× 2

Conical S. washer-1L, 4

× 4

❏

With the flat side of the

gear, frame open assembly

facing to the frame

side, attach it to the

C.B (M4

××××

16)

attached in step 3 from inside of th e

frame, paper supply assembly

; sequently attach a

P. washer

(4.3

××××

0.8

××××

8)

, four

conical S. washer-1L, 4

(with each two of concave surfaces

facing each other), and another

P. washer

(4.3

××××

0.8

××××

8)

to the screw.

5

Plate, rotation stopper

× 1

H. nut (4)

× 1

❏

Attach the

plate, rotation stopper

to the

P. washer

attached in step 4 so

that the bent part of the

plate, rotation stopper

is fit into the square hole

on the

frame, paper supply assembly

; then secure it with an

H. nut.

9

C.B (M4

××××

16)

× 1

P. washer (4.3

××××

0.8

××××

8)

× 3

Collar, screw holder

× 1

Gear, frame open
assembly

× 1

Conical S. washer-1L, 4

× 4

Plate, rotation stopper

× 1

H. nut (4)

× 1

❏

Perform steps 3 to 5 for the other side of the

frame, paper supply

assembly

.

★

<Check>

❏

Tightening torque: 206 to 216 mN•m {2.1 to 2.2 kg•cm}

10

❏

Apply Screw Lock Green (adhesive) to the

H. nut

and the

C.B (M4

××××

16)

.

Reassembly

step

Part name Assembly procedure

hexagonal nut (4)

plate, rotation stoppe r

p. washer (4.3 × 0.8 × 8)

conical S. washer-1L, 4

gear, frame open assemb ly

C.B (M4 × 16)

p. washer (4.3 × 0.8 × 8)

collar, screw holder

frame, paper supply
assembly

square
hole

square hole

6-32 Assembly and Disassembly Rev. A

Confidential

11

Power supply connector
assembly

× 1

C.B (M3

××××

4)

× 4

❏

Remove the switch connector from the

power supply connector

assembly

, and insert it to the hole on the

frame, paper supply

. At this

time, the circled mark s ide of th e sw itch connector shou ld be inside.

❏

Pass the lead wires for the power supply connector and the switch

connector under the power circuit board; then attach the

power supply

connector asse mbly

to the

spacer

and secure it with

(C.B (M3

××××

4)

screws. (See the enlarged view below for lead wires.)

★

< Check >

❏

Tightening torque: 539 to 637 mN•m {5.5 to 6.5 kg•cm}

❏

When using an 8 inch roll paper diameter type, pass only the lead wires

for the switch connector under the power circuit board.

12

❏

Insert the

switch connector

into the

power supply connector

.

13

Plate, paper guide, L

× 1

Plate, paper guide, R

× 1

C.B.S-tite (M3

××××

5)

× 2

❏

Attach the

plate, paper guide, L/R

to the

frame, paper supply assembly

and secure them with

C.B.S-tite (M3

××××

5)

screws.

★

< Check >

❏

Installation position of the

plate, paper guide, L/R

:

The outer sides of the

plate, paper guide L/R

’s oval holes are alig ned

with the dowels and the screw holes on the

frame, paper supply

, then

secure the guides while pusing from above.

❏

Tightening torque: 735 to 931 mN•m {7.5 to 9.5 kg•cm}

Reassembly

step

Part name Assembly procedure

Make sure that the lead wires are
passed under the power circuit board
after the power circuit board is
secured with the screws.

plate, paper guide, R

plate, paper guide, L

frame, paper supply

power supply connector

C.B (M3 × 4)

switch
connector

C.B.S-tite (M3 × 5)

C.B.S-tite (M3 × 5)

spacer

screw holes

dowels

Rev. A Assembly and Disassembly 6-33

EU-T432 Technical Manual

Confidential

14

Wire band SKB-85

× 2❏ Pass the lead wires for the

power supply connector

through the square

hole on the

frame, paper supply

and secure them with wire bands at

two places.

★

< Check >

❏

The lead wires for the upper fastening position should be arranged

behind the bent part of the frame.

Reassembly

step

Part name Assembly procedure

square hole

wire bands SKB-85

6-34 Assembly and Disassembly Rev. A

Confidential

Pre-assembly B: Roll paper holder unit

Reassembly

step

Part name Assembly procedure

1

Roll paper holder
reinforcement assembly

× 1

Spring, open lever

× 1

❏

Attach the

spring, open lever

to the convex parts on the

frame, open

lever

on the

roll paper holder reinforcement assembly

.

★

< Check >

❏

Make sure to confirm that the

lever, open

operates properly.

2

C.B.S-tite (M3

××××

5)

× 1❏ Attach the

roll paper holder reinforcement assembly

to the

frame, roll

paper holder assembly

, and secure it with a

C.B.S-tite (M3

××××

5)

screw.

★

< Check >

❏

Tightening torque: 735 to 931 mN•m {7.5 to 9.5 kg•cm}

3

Gear, frame opening and
shutting

× 1

P. washer

(3

××××

0.5

××××

7)

× 1

H. nut (3)

× 1

C.F (3

××××

8)

× 1

❏

Align the

gear, frame opening and shutting

with the dowels on the

frame,

roll paper holder

from inside, and att ach a

C.F (3

××××

8)

screw to it from the

outside. Secure the

gear, frame opening and shutting

with an

H. nut (3)

via a

P. washer (3.2

××××

0.5

××××

7)

.

★

< Check >

❏

Tightening torque: 539 to 637 mN•m {5.5 to 6.5 kg•cm}

4

Gear, frame opening and
shutting

× 1

P. washer

(3

××××

0.5

××××

7)

× 1

H. nut (3)

× 1

C.F (3

××××

8)

× 1

❏

Perform steps 2 and 3 for the other side of the

frame, roll paper holder

assembly

.

★

< Check >

❏

Tightening torque: 539 to 637 mN•m {5.5 to 6.5 kg•cm}

plate, reinforcement

spring, open lever

frame, open lever

roll paper holder
reinforcement assembly

frame, roll paper
holder assembly

C.F (3 × 8)

H. nut (3)

P. washer (3 × 0.5 × 7)

gear, frame opening
and shutting

C.B.S-tite (M3 × 5)

Rev. A Assembly and Disassembly 6-35

EU-T432 Technical Manual

Confidential

5

NE detector assembly

× 1

Lead wire, NE detector

× 1

❏

Connect th e

lead wires, NE detector

to the

NE detector assembly.NE

.

6

Cover, NE detector

× 1

Wire band, SKB-85

× 1

❏

Attach the

NE detector assembly

to the

cover, NE de te ct or

away from the

side with a screw hole.; then fasten the lead wires with a

wire band

.

★

< Check >

❏

The fastening part should be under the bent part on the cover.

7

C.B.S-tite (M3

××××

5)

× 1❏ Attach the

NE detector assembly

to the

frame, roll paper holder

aligning

the dowels on the

NE detector assembly

with the grooves on the frame;

then secure the

cover, NE detector

with the

NE detector assembl y

to the

frame, roll paper holder

with a

C.B.S-tite (M3

××××

5)

screw.

★

< Check >

❏

Tightening torque: 735 to 931mN•m {7.5 to 9.5 kg•cm}

❏

NE detector mounting pos ition: 6 inch type; lowe r, and 8 inch type; upper

8

C.B.S-tite (M3

××××

5)

× 1

❏

Align the center of the

NE detector

's dowel at A on the scale gradation;

then secure the

NE detector

with a

C.B.S-tite (M3

××××

5)

screw.

(A: Default setting)

★

< Check >

❏

Tightening torque: 735 to 931mN•m {7.5 to 9.5 kg•cm}

Reassembly

step

Part name Assembly procedure

cover, NE detector

NE detector assembly

screw hole

lead wire, NE detector

wire band SKB-85

cover, NE detector

frame, roll paper holder

groove for 8 inch type

for 6 inch type

C.B.S-tite (M3 × 5)
(for NE detector)

groove for 8 inch type

groove for 6 inch type

A

for 8 inch type

C.B.S-tite (M3 × 5)
(for cover, NE detector)

groove for
6 inch type

dowel

dowel on the rear side
of the NE detector
assembly

6-36 Assembly and Disassembly Rev. A

Confidential

9

Roll paper holder R
assembly

(for a 6 inch
paper roll diameter) × 1
or

Roll paper holder R
assembly, B (for a 8 inch

paper roll diameter)

× 1

Spring, roll paper holder

× 2

❏

Attach the

spring, roll paper holder

to the

roll paper holder R assembly

(or

roll paper holder R assembly, B

).

10

Roll paper holder R
assembly

(Roll paper holder R
assembly, B)

× 1

C.B (M3

××××

8)

× 2

❏

Align two dowels A on the

roll paper holder, R assembly

with the square

holes A from the inside of the

frame, roll paper holder

; then secure the

assembly with

C. B (M3 x 8)

screws from the outside. (The dowels and

square holes B for the

roll paper holder R assembly, B

)

★

< Check >

❏

Tightening torque: 539 to 637 mN•m {5.5 to 6.5 kg•cm}

Reassembly

step

Part name Assembly procedure

roll paper holder, R

assembly (for 6 inch type)

spring, roll paper holder

spring, roll paper holder

roll paper holder, R
assembly, B (for 8 inch type

dowels B

dowel s A

square holes A

square holes B

C.B (M3 × 8)
(mounting position for
8 inch type）

C.B (M3 × 8)
(mounting position for
6 inch type）

frame, roll paper
holder

Rev. A Assembly and Disassembly 6-37

EU-T432 Technical Manual

Confidential

11

Roll paper holder L
assembly

(for a 6 inch
paper roll diameter) × 1
or

Roll paper holder L ass embly,
B (for a 8 inch paper roll

diameter)

× 1

Spring, roll paper holder

× 2

❏

Attach the

spring, roll paper holder

to the

roll paper holder L assembly

(or

roll paper holder L assembly, B

).

★

< Check >

❏

Tightening torque: 539 to 637 mN•m {5.5 to 6.5 kg•cm}

12

Roll paper holder L
assembly

(Roll paper holder L
assembly, B)

× 1

C.B (M3

×

× ×

×

8)

× 2

❏

Align three dowels C on the

roll paper holder, L assembly

with the square

holes and the notch C on the frame and the

cover, NE detector

from the

inside of the

frame, roll paper holder

; then secure the assembly with

C.B

(M3

×

× ×

×

8)

screws from the outside. (The dowels, holes and notch D for the

roll paper holder, L assembly, B

)

★

< Check >

❏

Tightening torque: 539 to 637 mN•m {5.5 to 6.5 kg•cm}

Reassembly

step

Part name Assembly procedure

C.B (M3 × 8)
(mounting position for
8 inch type)

square hole C

C.B (M3 × 8)
(mounting position for
6 inch type)

dowel D

square hole and notch
C and D (common)

roll paper holder, L
assembly (for 6 in c h ty pe)

roll paper holder, L assembly, B
(for 8 inch type)

dowels C

dowels D

spring, roll paper holder

note:
In this illustration, the roll p ap er
holder R assembly is att a c hed to
the frame, roll paper holder.

6-38 Assembly and Disassembly Rev. A

Confidential

13

Wire band SKB-85

× 3 ❏ Fasten the

lead wire, NE detector

to the frame with the

wire band SKB-85

at three points.

14 ❏ Take out the connector of the

lead wire, NE detector

trough the round

hole on the frame.

★

< Check >

❏ The fastening part should be under the cover.

Reassembly

step

Part name Assembly procedure

wire band SKB-85

round hole

lead wire, NE detector

fastening part

Rev. A Assembly and Disassembly 6-39

EU-T432 Technical Manual

Confidential

Pre-assembly C: Roll paper supply module

Reassembly

step

Part name Assembly procedure

1

frame, paper supply unit

× 1

Roll paper holder unit

× 1

❏

Place the

frame, paper supply unit

on the

roll paper holder unit

aligning

the hole positions.

2

Collar, screw holder

× 1

❏

Attach the

collar, screw holder

to the screw hole on the frame from

outside.

3

C.B (M4

××××

16)

× 1

S. washer-2, 4

× 1

Plate, rotation stopper
assembly

× 1

❏

Attach a

S. washer

and the

plate rotation stopper assembly

to a

C. B (M4

x 16)

screw, and fit it into the

collar, screw holder

on the frame from

outside so that the bent part on the

plate, rotation stopper assembly

is fit

in the square hole on the frame.

4

P. washer (4.3

××××

0.8

××××

8)

× 1

H. nut (4)

× 1

❏

Attach a

P. washer (4.3 x 0.8 x 8)

from inside of the frame, then secure it

with an

H. nut (4)

.

★

< Check >

❏

Tightening torque: 441 to 539 mN•m {4.5 to 5.5 kg•cm}

5

Collar, screw holder

×

1

C.B (M4

××××

16)

×

1

S. washer-2, 4

×

1

Plate, rotation sto pp er
assembly

×

1

P. washer (4.3

××××

0.8

××××

8)

×

1

H. nut (4)

×

1

❏

Perform the same steps for t h e other side.

★

< Check >

❏

Tightening torque: 441 to 539 mN•m {4.5 to 5.5 kg•cm}

6

❏

Lubricate the

H.nut (4)

and the screw part with screw lock.

plate, rotation stoppe r
assembly

C.B (M4 × 16)

S. washer-2, 4

collar, screw holder

P. washer (4.3 × 0.8 × 8)

H. nut (4)

roll paper holder unit

frame, paper
supply unit

square hole

square hole

6-40 Assembly and Disassembly Rev. A

Confidential

Pre-assembly D: Presenter tab l e assembly

Reassembly

step

Part name Assembly procedure

1

Table, presenter

× 1

P. washer (4

××××

0.8

××××

10)

× 1

C.B.P-tite (M3

××××

8)

× 1

❏

Attach the

circuit board

to the

table, presenter

and secure it with a

C.B.P-

tite (M3

××××

8)

screw via a

P. washer

.

★

< Check >

❏

Tightening torque: 735 to 931 mN•m {7.5 to 9.5 kg•cm}

2

Paper detector, assembly 1

× 1

❏

Slide the

paper detector, assembly 1

(with a large lever) into the snap

fastener on the the

circuit board

side.

★

< Check >

❏

Make sure that the

paper detector, assembly 1

is fit securely in to th e sna p

fasteners .

3

Paper detector assembly

×1❏ Slide the

paper detector assembly

(with a small lever) to the other snap

fastener.

★

< Check >

❏

Make sure that the

paper detector assembly

is fit securely into the snap

fasteners.

❏

Make sure the correct mounting position for the

paper detector,

assembly 1

and the

paper detector assembly

to attach.

circuit board assembly

C.B.P-tite (M3 × 8)

paper detector, assembly 1

paper detector
assembly

table, presenter

P. washer (4 × 0.8 × 10)

snap fasteners