Epson EPL-N1600 Service Manual

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EPSON EPL-N1600 Option

Duplex Unit

Notice



EPSON is a re

General Notice: Other product names used herein are for identification purpose only and may be trademarks or registered trademar ks of their

hts reserved. No part of t his manual may be r eprod uced, st ored in a r etri eval sy ste m, or t ransmit ted in any for m or by an y means el ectroni c,

All ri mechanical, photocopyin

All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would

reatly appreciate being informed of them. The contents of this manual are subject to chan All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would

reatly appreciate being informed of them. The above not withstandin

thereof.

istered trademark of SEIKO EPSON CORPORATION.

respective owners. EPSON disclaims any and all rights in those marks.

, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.

e without notice.

SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences

PRECAUTIONS

Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment.

DANGER

WARNING

The precautionary measures itemized below should always be observed when performin

Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performin

Signals a precaution which, if ignored, could result in damage to equipment.

procedures preceded by DANGER Headings.

repair/maintenance procedures.

DANGER

1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES.

2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.

3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.

WARNING

1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.

2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/ RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.

3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.

4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.

5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE

1. EPSON WARRANTY.

About This Manual

This manual describes basi c functions, theory of electrical and mechanical operations, maintenance and repair procedures of the Duplex Unit for the EPL-N1600. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be the precautions on the precedin

page.

iven to

Contents

This manual consists of six chapters and Appendix.

CHAPTER 1. PRODUCT DESCRIPTIONS

Provides a product.

CHAPTER 2. OPERATING PRINCIPLES

Describes the theory of electrical and mechanical operations of the product.

CHAPTER 3. TROUBLESHOOTING

Provides the step-by-step procedures for troubleshootin

CHAPTER 4. DISASSEMBLY AND ASSEMBLY

Describes the step-by-step procedures for disassemblin

CHAPTER 5. ADJUSTMENTS

Provides Epson-approved methods for adjustment.

CHAPTER 6. MAINTENANCE

Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicin

APPENDIX

Provides the followin reference:

• Connector pin assi

• Electric circuit boards components layout

• Exploded dia

• Electrical circuit boards schematics

eneral overview and specifications of the

and assembling the product.

the product.

additional information for

nments

ram

Symbols Used in This Manual

Various symbols are used throughout this manual either to provide additional information on a specif ic topic or to warn of possible dan present durin they are used, and always read WARNING, CAUTION or NOTE

CHECK

PO IN T

es.

messa

W ARNING

CAUTION

a procedure or an action. Be aware of all symbols when

Indicates an operatin or condition that, if not strictly observed, could result in injury or loss of life.

Indicates an operatin or condition that, if not strictly observed, could result in dama

May indicate an operatin practice or condition that is necessary to accomplish a task efficiently. It may also provide additional information that is related to a specific subject, or comment on the resul ts achieved throu

e to, or destruction of, equipment.

h a previous action.

or maintenance procedure, practice

or maintenance procedure, practi ce,

or maintenance procedure,

Revision Status

Revision Issued Date Description

Rev. 0 August 17, 1998 Prelimina ry release. (intended for service training purpose only) Rev.A October 30, 1998 First release.

EPSON EPL-N1600

Product Descriptions

OVERVIEW ..................................... ...... ....... ...... ....... ...... ............................... 9

Basic specificatio n ........................ ...... ....................................... ..... 9

Paper specification.......................................................................... 9

Reliability/Durability/s ervicea bil it y ................................. ....... ...... ..... 9

dimension and wei

ht...... ...... ......................................................... 9

Operating Principles

OVERVIEW .................................................................................................. 11

Paper Transportation............................................................................... 11

paper transportation control.......................................................... 13

Scannin

Drive Power Transmission ...................................................................... 14

Duplex unit drive power transmission (1)...................................... 15

Duplex unit drive power transmission (2)...................................... 15

Function of Duplex Unit Major Components............................................ 16

Vertical Unit ........ ...... ....... ...... ....... ...... ....... ...... ....... ...... ................ 16

Horizontal Unit .............................................................................. 18

direction in duplex printing............................................ 13

Troubleshooting

Chute Cover............................................................................................ 27

Fan Assembly Duplex ............................................................................. 28

Sensor Assembly (Vertical)..................................................................... 29

Motor Duplex........................................................................................... 30

Solenoid .................................................................................................. 31

Shaft Latch & Lever................................................................................. 32

Rolls Pinch & Roll Assembly Exit............................................................ 33

Chute Lower & Roll Assembly................................................................. 34

Photo Interrupters (Rear I/L & Chute Cover I/L)..................................... 35

Photo Interrupter (PL11.1.9: Rear Interlock)................................. 35

Photo Interrupter (PL11.2.15: Chute Cover Interlock) .................. 35

Chute Upper............................................................................................ 36

Sensor Assembly (Horizontal)................................................................. 37

Roll Assembly #1 & Pinch Roll................................................................ 38

Plate Base............................................................................................... 39

Roll Assemblies #2 & #3 ......................................................................... 40

PWB Assembly Duplex ........................................................................... 41

Bracket & Gear Assembly ....................................................................... 42

Adjustment

Maintenance

DISASSEMBLY AND ASSEMBLY

OVERVIEW .................................................................................................. 23

Precautions ............................................................................................. 23

Tools........................................................................................................ 23

DISASSEMBLY AND ASSEMBLY............................................................... 24

Duplex Unit Removal............................................................................... 25

Duplex Assembly Unit Vertical................................................................ 26

Appendix

Connector Location ...................................................................................... 49

Exploded Dia

ram........................................................................................ 50

Duplex Unit (Optional)................................................................... 50

Duplex Unit Vertical I .................................................................... 52

Duplex Unit Vertical II ................................................................... 54

Duplex Unit Vertical III .................................................................. 56

Rev. 0 6

EPSON EPL-N1600

Duplex Unit Horizontal I ................................................................ 58

Duplex Unit Horizontal II ............................................................... 60

Duplex Unit Chute......................................................................... 62

Rev. 0 7

PRODUCT DESCRIPTIONS

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EPSON EPL-N1600/Duplex Unit Chapter 1 Product Descriptions

1.1 OVERVIEW

This section describes the specification of the 500 Sheets feeder.

BASIC SPECIFICATION

Paper Handlin Drive Source: Driven by the base printer Speed: A4 = 7.8PPM / Letter = 8.0PPM Capacity: 1 sheet (in reverse tray) Paper Feed Ori

PAPER SPECIFICATION

Paper Type: <Standard Paper>

: Tray reverse

in: Left edge of sheet

Xerox 4024DP 20 lb. (75 <Normal Paper> 60 - 105

- PPC Paper

- Bond paper

- Recycled paper

/m2 (16 - 28 lbs.)

/m2) paper

RELIABILITY/DURABILITY/SERVICEABILITY

MPBF: 25,000 sheets or more MTBF: 3,000 hours or more Life: 300,000 sheets or 5 years

(whichever comes first)

Paper Feed Reliability *1:<Jam rate>

1/2000 sheets or less <Misfeed> 1/2000 sheets or less <Multiple sheet feed> 1/500 sheets or less <Folded coners> 1C or more at 1/1000 sheets or less (1C or less is not included)

NOTE:

*1:With recommended paper and normal conditions

MTTR: 30 minutes or less

DIMENSION AND WEIGHT

Paper Size: A4 (210 x 297mm)

Letter (8.5 x 11 inch) G-Le Le

al (8.5 x 13 inch)

al (8.5 x 14 inch)

Dimension: 396 x 517 x 254 mm (W x D x H) Wei

ht: 6.5 K

Rev. 0 9

OPERATING PRINCIPLES

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EPSON EPL-N1600/Duplex Unit Chapter 2 Operating Principles

2.1 OVERVIEW

This section describes the operating principles of the Duplex Unit.

2.1.1 Paper Transportation

Paper is transported through the printer Base Engine and the Duplex Unit alon Mode is selected or the optional Face UP Catch Tray is installed and selected. In the Duplex Mode, a sheet of paper printed on one side is

uided into the Duplex Unit to re-feed, turned over in the Duplex Unit, reversed, and fed a Catch Tray is selected, a sheet print ed on one side in the Simplex Mode or a sheet printed on both sides is delivered into the Face Up Catch Tray throu

the paper path shown in the Figure below when the Duplex

ain into the Base Engine. When the optional Offset

h the Duplex Unit.

Figure 2-1. Paper Transport Path

Rev. 0 11

EPSON EPL-N1600/Duplex Unit Chapter 2 Operating Principles

The Figure below is a cut-section side view of the EPL-N1600 with the optional Duplex Unit attached that shows the paper path and the major components directly related to the paper transportation.

Figure 2-2. Duplex Printing Paper Path

Rev. 0 12

EPSON EPL-N1600/Duplex Unit Chapter 2 Operating Principles

PAPER TRANSPORTATION CONTROL

The fi

ure below shows the paper movements in duplex printing mode.

SCANNING DIRECTION IN DUPLEX PRINTING

The fi scannin controller sends the ima order of pa

ure below shows the relationship between the main and sub

direction and a side of the page printed in duplex pri nting. The

e data to the engine according to the printing

es, lines (raster lin es) on each page and pixels on each line.

Figure 2-3. Paper Movement Control

Figure 2-4. Scanning Direction

Rev. 0 13

EPSON EPL-N1600/Duplex Unit Chapter 2 Operating Principles

2.1.2 Drive Power Transmission

The Duplex Unit is operated by the drive power generated by the Main Motor and the Paper Handlin drive power

ure in right shows the relations of each components.

enerated by the Motor Duplex within t he Duplex Unit. The

Motor of the Base Engine and by the

Figure 2-5. Drive Power Transmission

Rev. 0 14

EPSON EPL-N1600/Duplex Unit Chapter 2 Operating Principles

DUPLEX UNIT DRIVE POWER TRANSMISSION (1) DUPLEX UNIT DRIVE POWER TRANSMISSION (2)

Rev. 0 15

EPSON EPL-N1600/Duplex Unit Chapter 2 Operating Principles

gag

2.1.3 Function of Duplex Unit Major Components

VERTICAL UNIT

Motor Duplex: Generates the drive power for the Duplex

Unit.

Gear Cluster: Transmits the drive power from the Motor

Duplex to the Roll Assembly Exit and to Roll Assembly #1 (part of the Horizontal Unit). When the Vertical Unit is in place, the Idle r Gear in the Gear Cluster en the end of the Roll Assembly #1 shaft, and transmits the drive power to Roll Assembly #1. When the Vertical Unit is tilted back, the Idler Gear disen Roll Assembly #1 shaft.

Roll Assembly: Works with Rolls Pinch to drive paper from

the Fuser Exit Roll Assembly into the Vertical Unit. The drive power is transmitted from the Base En the Duplex Gear Assembly of the Base En

Roll Assembly Exit: Works with Rolls Pinch to drive paper out into

the Face Up Catch Tray. The drive power for the Roll Assembly Exit is trans mitted fr om the Motor Duplex throu

ine to the Roll Assembly, through

ine and the gears in the Duplex Unit.

e from the gear on the

h the Gear Cluster.

es the gear on

Gate Upper: A movin

to either Roll Assembly #1 or to the Roll Assembly Exit.

Solenoid: To

Figure 2-6. Duplex Unit - Vertical unit Components

baffle that switches the paper path

les the Gate Upper.

Rev. 0 16

EPSON EPL-N1600/Duplex Unit Chapter 2 Operating Principles

Sensor Assembly: Sensor in the Vertical Unit which is located

near the inlet and det ects paper which enters the Duplex Unit. This sensor i s also called the Vertical Sensor.

Chute Lower: Pushed down by the paper comin

Gate Upper, allowin to Roll Assembly #1. Without the wei the paper pushin its raised position. Then the sh eet of paper, driven in the reverse direction by Roll Assembly #1, is the Gate Lower to Roll Assembly #2.

Fan Duplex: Expels the air inside the Duplex Unit (and the

printer throu introduces fresh air into the Duplex Unit and the printer) to prevent an excessive r ise of the inside temperature.

Latch: Secures the Vertical Unit to the rear of the

Base En

h the rear exit of the printer) and

ine.

the paper to proceed on

it down, the Gate returns to

uided by the bottom side of

from the

ht of

Rev. 0 17

EPSON EPL-N1600/Duplex Unit Chapter 2 Operating Principles

HORIZONTAL UNIT

Bracket & Gear Assembly:Receives the drive power from the Base

ine, and transmits it to Roll Assemblies

En #2, #3, and #4 of the Horizontal Unit.

Roll Assembly #: Receives the drive power from the Motor

Duplex and Gear Cluster which are p art of the Vertical Unit. Roll Assembly #1 rotates forward when receivin the first side printed. Roll Assembly #1 then rotates in reverse to drive the sheet to Roll Assembly #2 in preparation for printin second side of the sheet.

Roll Assemblies#2/3/4: Drive the paper into and out of the Duplex

Unit.

PWBA Assembly Duplex: Controls the Duplex Unit operation. The 4-bit

MPU on the PWBA Duplex receives commands from the PWBA MMCU, receives

nals from the Sensors within the Duplex

si Unit, actuates the Solenoid Duplex, and the Motor Duplex, and returns the status of the Duplex Unit.

a sheet of paper with

the

Horizontal Sensor: Detects when a sheet of paper reaches Roll

Assembly #2.

Figure 2-7. Duplex Unit - Horizontal Unit Components

Duplex Unit ChuteCover Interlock:

Photo interrupter (PL11.24) that monitors whether or not the Duplex Unit Chute Cover is in place.

Vertical Unit Interlock: Photo interrupter (PL11.24) that monitors

whether or not the Vertical Unit is in position

ainst the rear of the Base Engine.

Rev. 0 18

EPSON EPL-N1600/Duplex Unit Chapter 2 Operating Principles

Plate Stopper: Support and limiting arm for the Vertical Unit Solenoid: To

les the Gate Upper.

Rev. 0 19

+ 43 hidden pages

Epson EPL-N1600 Service Manual

PRECAUTIONS

Revision Status

Table of Contents

PRODUCT DESCRIPTIONS

1.1 OVERVIEW

BASIC SPECIFICATION

PAPER SPECIFICATION

RELIABILITY/DURABILITY/SERVICEABILITY

DIMENSION AND WEIGHT

OPERATING PRINCIPLES

2.1 OVERVIEW

2.1.1 Paper Transportation

PAPER TRANSPORTATION CONTROL

SCANNING DIRECTION IN DUPLEX PRINTING

2.1.2 Drive Power Transmission

DUPLEX UNIT DRIVE POWER TRANSMISSION (1) DUPLEX UNIT DRIVE POWER TRANSMISSION (2)

2.1.3 Function of Duplex Unit Major Components

VERTICAL UNIT

HORIZONTAL UNIT