EPL N2050 Service Manual Rev b

SON EPL-N2050chrome Laser Printer

SE MANUALSE MANUALSE MANUALSE MANUALEPMono

RVICERVICERVICERVICESEPG99009

mitted in any form or by any means, f SEIKO EPSON CORPORATION.

any errors be detected, SEIKO EPSON

errors in this manual or the consequences

emarks or registered trademarks of their Notice: All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or trans

electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission o

The contents of this manual are subject to change without notice.

All efforts have been made to ensure the accuracy of the contents of this manual. However, shouldwould greatly appreciate being informed of them.

The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any thereof.

EPSON is a registered trademark of SEIKO EPSON CORPORATION.

General Notice: Other product names used herein are for identification purpose only and may be tradrespective owners. EPSON disclaims any and all rights in those marks.

Copyright 1999 SEIKO EPSON CORPORATION. Printed in Japan.

Pr equipment.

Th nce procedures.

1. S PERFORMING ANY MAINTENANCE

2. ETY MEASURES AS DICTATED FOR

3. NIT TO A POWER SOURCE UNTIL REME CAUTION IN WORKING ON

1. PAIR TECHNICIAN.2. D ON THE SERIAL NUMBER/RATING

OWER SOURCE, DO NOT CONNECT IT

3. SOURCE BEFORE REMOVING OR

4. ARGE EQUIPMENT, SUCH AS ANTI-

5. FACTURE; INTRODUCTION OF T AND VOID ANY APPLICABLE EPSON

n which, if ignored, could result ment.PRECAUTIONSecautionary notations throughout the text are categorized relative to 1) Personal injury and 2) Damage to

e precautionary measures itemized below should always be observed when performing repair/maintena

DANGERALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICEOR REPAIR PROCEDURES.NOWORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UINSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTPOWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.

WARNINGREPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REMAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTEPLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE PTO THE POWER SOURCE.ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWERREPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHSTATIC WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUSECOND-SOURCE ICs OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCWARRANTY.

Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by a WARNING heading.

Signals a precautioin damage to equip

Th pair procedures of EPL-N2050. The ins attention should be given to the pre

oduct.

g the PREFACEis manual describes basic functions, theory of electrical and mechanical operations, maintenance and retructions and procedures included herein are intended for the experienced repair technicians, and closecautions on the preceding page. Chapters are organized as follows:

CHAPTER 1. PRODUCT DESCRIPTIONSProvides a general overview and specifications of the product.

CHAPTER 2. OPERATING PRINCIPLESDescribes the theory of electrical and mechanical operations of the pr

CHAPTER 3. TROUBLESHOOTINGProvides the step-by-step procedures for troubleshooting.

CHAPTER 4. DISASSEMBLY AND ASSEMBLYDescribes the step-by-step procedures for disassembling and assemblinproduct.

CHAPTER 5. ADJUSTMENTProvides adjusting procedures.

CHAPTER 6. MAINTENANCEProvides preventive maintenance procedures.

APPENDIXProvides the following addition information for reference:- Connector Pin Diagram- Circuit Board Component Layout- Parts List & Exploded Diagram- Circuit Schematics

evised.nged. Revision Status

Revision Date of Issue DescriptionA December 2 , 1999 First Release

B January 13, 2000 Parts lists and exploded diagrams have been rDisassembly procedures have been partly cha

EPSON EPL-N2050 Revision B

6

Ch1.1

1.2

1.3

1.4

ciples................................................................... 36rinting ..................................................... 36.................................................................. 38

................................................................... 39ction ......................................................... 43................................................................... 55

ng................................................................... 58................................................................... 58................................................................... 60

Message ................................................ 62ages

endent) .................................................... 64................................................................... 67................................................................... 68

Performance ......................................... 69.................................................................. 69................................................................... 71ponents .................................................. 71

age Quality ........................................... 72t ............................................................... 73) ................................................................ 74.................................................................. 75g ............................................................... 76ns ............................................................. 77ing ........................................................... 78.................................................................. 79ks ............................................................. 80................................................................... 81Contentsapter 1 Product Description

Features ................................................................................................ 10 Specifications ....................................................................................... 121.2.1 Controller Specifications ............................................................. 121.2.2 Engine Specifications .................................................................. 131.2.3 Process Specification .................................................................. 171.2.4 Paper Specification ...................................................................... 181.2.5 Sensors ......................................................................................... 201.2.6 Reliability, Durability, Serviceability .......................................... 211.2.7 Operating Conditions .................................................................. 221.2.8 Storage Environment .................................................................. 221.2.9 Electrical Characteristics ............................................................. 231.2.10 Applicable Standards and Regulations ................................... 241.2.11 Consumables ............................................................................. 251.2.12 Maintenance .............................................................................. 251.2.13 External Dimension ................................................................... 261.2.14 Other Specifications .................................................................. 271.2.15 Configuration ............................................................................. 271.2.16 Host Interface Specifications .................................................... 28

Control Panel ....................................................................................... 321.3.1 Exterior View and Parts Name ................................................... 321.3.2 One Touch Setting Functions ..................................................... 331.3.3 Special Operation Functions ...................................................... 33

Notes on Operation ............................................................................. 341.4.1 Powering Off ................................................................................ 341.4.2 High-Temperature Components ................................................ 34

Chapter 2 Operating Prin2.1 Overview ...........................

2.1.1 Electrophotographic P2.1.2 Paper Path ..................2.1.3 Drive Flow .................2.1.4 Main Component Fun2.1.5 Main Control Circuit .

Chapter 3 Troubleshooti3.1 Troubleshooting ...............

3.1.1 Service Flowchart .....3.1.2 FIP Flowchart ............

3.2 Troubleshooting by Printer3.2.1 Details of Printer Mess (New and Model-dep3.2.2 Service Call Errors ....3.2.3 RAM Expansion ........

3.3 Troubleshooting by Printer3.3.1 Inoperative Printer .....3.3.2 Erratic Operation ......3.3.3 Inoperative Drive Com

3.4 Troubleshooting by Print Im3.4.1 Light (Undertone) Prin3.4.2 Blank Print (No Image3.4.3 Black Print ..................3.4.4 Vertical White Bandin3.4.5 Vertical Linear Deletio3.4.6 Horizontal White Band3.4.7 Vertical Black Streaks 3.4.8 Horizontal Black Strea3.4.9 White Spots ..............


7

3.5

Ch4.1

4.2

................................................................. 129

................................................................. 131

................................................................. 132

................................................................. 134

................................................................. 136

................................................................. 137

................................................................. 1383-6, 28) ................................................... 139................................................................. 141................................................................. 142................................................................. 144................................................................. 146Set ......................................................... 148................................................................ 150................................................................. 151................................................................. 152 ............................................................... 153 ............................................................... 154................................................................. 155................................................................ 156................................................................ 158................................................................. 159................................................................ 160................................................................. 161................................................................. 162................................................................. 163................................................................. 164 ............................................................... 165................................................................ 166................................................................. 167................................................................. 168................................................................. 169

............................................................ 170................................................................ 172................................................................. 173 Assy MID-1 .......................................... 174 Assy MID-2 .......................................... 176................................................................ 178................................................................. 179................................................................. 1803.4.10 Black Spots ................................................................................. 823.4.11 Ghost Print ................................................................................. 833.4.12 Dirty Background ....................................................................... 843.4.13 Skewed Image ........................................................................... 853.4.14 Damaged Print ........................................................................... 863.4.15 Unfused Image .......................................................................... 873.4.16 Misregistration ........................................................................... 88

Secondary FIPs .................................................................................... 89

apter 4 Disassembly and Assembly Overview ............................................................................................ 1034.1.1 Preparation ................................................................................. 1034.1.2 Tools ........................................................................................... 1034.1.3 Notations in the Manual ........................................................... 103

Disassembly and Assembly .............................................................. 1044.2.1 Cover Left ................................................................................... 1044.2.2 Cover Assy I/F ............................................................................ 1054.2.3 Cover Assy Front ....................................................................... 1064.2.4 Tray Assy MBF ........................................................................... 1074.2.5 Cover Front L/H .......................................................................... 1084.2.6 Cover Option .............................................................................. 1094.2.7 Cover Assy Top .......................................................................... 1104.2.8 Control Assy Panel .................................................................... 1114.2.9 Cover Right ................................................................................ 1124.2.10 Cap Envelope ........................................................................... 1134.2.11 Stopper ..................................................................................... 1144.2.12 Cover Rear ................................................................................ 1154.2.13 Cassette Assy ........................................................................... 1164.2.14 Clutch Assy Friction ................................................................. 1174.2.15 Roll Assy ................................................................................... 1184.2.16 Spring Retard ........................................................................... 1194.2.17 Motor Assy ............................................................................... 1204.2.18 Connector and Guide Socket .................................................. 1214.2.19 Spring ....................................................................................... 1234.2.20 Roll Assy Turn .......................................................................... 1244.2.21 Spring Chute ............................................................................ 1264.2.22 Actuator N/P ............................................................................. 1274.2.23 Sensor Photo: Face Control, Low Paper ................................ 128

4.2.24 Feeder Assy ............4.2.25 Roll Assy .................4.2.26 PWBA Feeder ..........4.2.27 Clutch Assy Feed ....4.2.28 Socket ......................4.2.29 Paper Feeder ...........4.2.30 Chute MBF Assy .....4.2.31 Roll Assy MBF (with 4.2.32 Roll Assy MBF .........4.2.33 Tray Bottom Assy ...4.2.34 Actuator N/P MBF ...4.2.35 Pad Assy Retard .....4.2.36 Sensor Photo: Paper 4.2.37 Solenoid Pick Up .....4.2.38 Spring MSI 300 .......4.2.39 Gear Pick Up ...........4.2.40 Connector Assy ENV4.2.41 Tray Bottom Pick Up4.2.42 P/H Assy ..................4.2.43 Roll Regi Rubber ......4.2.44 Actuator Regi ...........4.2.45 Spring Sensor Regi 4.2.46 Sensor Photo: Regi ..4.2.47 Spring Regi .............4.2.48 Gear Regi Metal ......4.2.49 Gear Regi Rubber ...4.2.50 Clutch Regi ..............4.2.51 Shaft 14 and Gear 144.2.52 Toner Sensor ...........4.2.53 BTR Assy .................4.2.54 Chute Trans Assy ...4.2.55 Fuser Assy ...............4.2.56 Harness Assy Fuser-M4.2.57 Eliminator Assy Exit 4.2.58 Actuator Full Stack .4.2.59 Bearing Exit and Roll4.2.60 Bearing Exit and Roll4.2.61 Sensor Photo: Exit ...4.2.62 Cover Interlock ........4.2.63 Motor Assy Exit ......


8

Ch

Ch6.1

Ch7.1

Map ..................................................... 226................................................................. 231

................................................................ 240agram .................................................... 241................................................................. 2564.2.64 Chute Assy Exit ........................................................................ 1814.2.65 CRU Top Guide Assy ............................................................... 1824.2.66 ROS Assy .................................................................................. 1834.2.67 Gear Assy Drive ....................................................................... 1844.2.68 Motor Assy Main ..................................................................... 1864.2.69 Sensor Assy CRU ..................................................................... 1874.2.70 Plate Assy Left ......................................................................... 1884.2.71 Fan Assy ................................................................................... 1894.2.72 Plate Handle ............................................................................. 1904.2.73 PWBA Size 1 ............................................................................. 1914.2.74 Harness Assy Size M ............................................................... 1924.2.75 Cover Size Sensor ................................................................... 1934.2.76 Housing Size Sensor ............................................................... 1944.2.77 PWB ESS .................................................................................. 1954.2.78 Harness Assy OCT-M .............................................................. 1964.2.79 Switch Assy I/L Rear ................................................................ 1974.2.80 Harness Assy DUP-M .............................................................. 1984.2.81 PWBA CONN ............................................................................ 2004.2.82 Switch Assy I/L Front ............................................................... 2014.2.83 PWBA MCU .............................................................................. 2024.2.84 PWBA 5VDC ............................................................................. 2044.2.85 PWBA PS .................................................................................. 2054.2.86 Main Switch ............................................................................. 2074.2.87 PWBA HVPS ............................................................................. 208

apter 5 Adjustment

apter 6 Maintenance Overview ............................................................................................ 2136.1.1 Maintenance by Users .............................................................. 2136.1.2 Maintenance by Service Personnel .......................................... 213

apter 7 Appendix Connector Pin Diagram ..................................................................... 2177.1.1 Connectors - C305MAIN ............................................................ 2177.1.2 Pin Alignment ............................................................................ 225

7.1.3 P/J Location Table and7.1.4 Signal Information ...

7.2 Board Component Layout

7.3 Parts List and Exploded Di

7.4 Circuit Diagram .................

C H A P T E R

P UCT DES1CRIPTIONROD


P 10

1.

EPphThShMa

EN

310 / 166.7MHz CPU.

g commercially available SDRAM DIMM.

ce

se-TX)

ob in HDD and RAM enables high speed transferring data only once.

ce (Level 3).

erface.SON sales companies. Cannot be used with e time.)

ort.

er handling support0 dpi support (Protocol 2)0 dpi support, Enhanced Micro Gray supportabled when printing in 1200 dpi), paperdling support, Page96 supported.0), I239X (IBM239Plus)er handling support

0 dpi support (refer to Adobe PS 3 kit Productcifications)ware updating function

al, and it will be installed in Slot A or B.roduct Description Features

1 Features

L-N2050 is a non-impact page printer, using the laser and electro-otographic technology. The following shows features of the printer.is manual also contains specifications for the Optional Units: Duplex Unit, ifter, Envelope Feeder, and Large Capacity Paper Unit. Refer to the Service nual of Optional Units for the detailed specifications of the Multibin Unit.

Figure 1-1. External Appearance of EPL-N2050

GINE FEATURES

High-speed and high-reliability A4 engine.

Resolution of 1200 dpi with printing speed of 20 ppm (A4) and 21 ppm (Letter).

Standard paper supply includes one universal cassette (550 sheets) and the multiple purpose tray (100 sheets).

Wide range of options for paper source and output bins:Universal Cassette (550 sheets) x 2, Duplex Unit, Envelope Feeder, Multibin Unit, and Shifter.

CONTROLLER FEATURES

High-speed controller VR4

16 MB RAM as standard.Expandable to 256 MB usin

Three standard interfaces:- IEEE 1284 parallel interfa- RS232 serial interface- Ethernet interface (100Ba

Storing data of the entire jmultiple collate function by

One slot for Type B interfa

One slot for Token Ring int(Optional for dealers or EPType B interface at the sam

Enhanced Micro Gray supp

SOFTWARE FEATURES

1. Emulation installed.PCL5e PapPCLXL 120ESC/Page 120

(dishan

FX (FX-880), ESCP2 (LQ-217Pap

PJL, EJLPostScript Level3* 120

SpeRCC Firm

*PostScript Level3 is option Dedicated to EPL-N2050.


P 11

2.

3.roduct Description Features

Installed Utility: Web Assist

Rewriting of Flash ROM DIMMsFlash ROM DIMMs in Slot A and the program slot can be rewritten from any I/F (Not open to users except for Slot A).When downloading NLSP, it is written using Slot A, and it is inserted into Slot B when used.


P 12

1.

1.

CP

RA

RO

E 1284 compliant, bi-directional, B-typecompatibility, nibble, ECPBaseT/100BaseTXial interface

slot 1 slot (dealer option) Token Ring cannot be used together. and standard network interface cannotether.

and ENPC. serial type 16 KB

racter LCD

n is not built in.roduct Description Specifications

2 Specifications

2.1 Controller Specifications

U

RISC CPU VR4310 166.7MHz

M

SDRAM 64bit width DIMM (168 pin, 3.3V)

Standard 16 MB

DIMM Option 8 MB*, 16 MB, 32 MB, 64 MB, 128 MB, 256 MB (SDRAM type, 1 slot)Maximum 256 MB

*8 MB is scarcely distributed, and therefore it is not stated in the catalog or specifications.

M

Fonts 4 Mbytes (mounted on the main board)

Program 4 Mbytes (mounted on the flash ROM DIMMboard)Program data is compressed. Decompressed onthe RAM and executed when it is called.

Expansion ROM Two ROM DIMM slots (can be mounted andremoved when the power is off)Slot A: PS3 or option fontsSlot B: PS3 or option fontsOnly one piece of PS3 can be mounted, and onlyone piece of ROM DIMM can be installed.

HOST INTERFACES

Standard Parallel: IEEconnector, Ethernet: 10RS232C ser

Option Type B I/F 1Token RingType B andToken Ringbe used tog

PRINTER SETTING

By EJL, PJL, HTTP, SNMP Memory element EEPROM

CONTROL PANEL

8 switches, 6 LEDs, 20-cha

MOUNTING

Fixed to main unit.

HDD OPTION

IDE type. 6GB.

MISCELLANEOUS

Mechanical control functio


P 13

1.

h modeh mode

max. (at 22C, 100V/220V, rated voltage)

. First Printing Time

e 1 (sec) Cassette 2 (sec) Cassette 3 (sec)

DuplexPrinting*

One-Side

Printing

DuplexPrinting*

One-Side

Printing

DuplexPrinting*

20.521.5

14.421.722.7

15.622.923.9

20.822.6

14.522.023.8

15.723.225.0roduct Description Specifications

2.2 Engine SpecificationsPrinting Method Electrophotographic method using scanning

semiconductor laser beam and dry one-component toner.

Resolution 600 dpi/1200 dpi (switching with engine)

Printing Speed Applies to MP tray, cassette 1 andcassette 2/3 (option).

*1 Duplex printing speed is in the case of 2 sheet batch mode.*2 Switching with paper type setting.*3 In the case of continuous printing, up to 20 sheets

(TBD for over 21 sheets).

First Printing Time

*Upper Tray: one sheet batc Lower Tray: two sheet batc

Warm-Up Time 65s

Table 1-1. Printing Speed

Paper SizeOne-Side Printing

(ppm)Duplex Printing*1

(ppm)

Letter (LT) 21 14.5

A4 20 13.5

Legal 14 (LGL) 17 11.5

Legal 13 (GLG) 17 12

Executive (EXE) 21 15

B5 21 15

Thick Paper*2 17 --

OHP Film*2 17 --

Envelope*3 9 --

Table 1-2

Size MP Tray (sec) Cassett

One-Side

Printing

DuplexPrinting*

One-Side

Printing

LT 13.220.521.5

13.2

A4 13.320.822.6

13.3


P 14

apacity*1

0g/m2, Lower Tray: 64g/m2

St

O

x. Paper Supply Capacity

tte 1 Cassette 2*2 Cassette 3*2 Total

eetseets

-- --650 sheets720 sheets

eetseets

550 sheets600 sheets

--1200 sheets1320 sheets

eetseets



1750 sheets1920 sheetsroduct Description Specifications

Paper Supply

*1 Curls of postcards and envelopes are corrected within 5mm.*2 Refer to Section 1.2.13.1 for feeding direction of envelopes.

Maximum Paper Supply C

*1 Upper Tray: 75g/m2 or 8*2 Option

Table 1-3. Paper Supply

Paper Supply Method

Capacity Paper SizePaper

Thickness

andard

MP Tray

100 sheetsStandard Paper Xerox-4042 (LT) Xerox-RX80 (A4)

75g/m2

(20lb)

120 sheets Standard Paper FX-L (A4) 64g/m2

30 sheets Japanese Official Postcard*1 190g/m2

OHP, Labels --

10 sheets Envelopes (Monarch, C10, DL, C5)*1,2 --

Height 11.5mm

Standard or custom size shown 1-1060-216g/m2

(16-80lb)

Cassette 1

550 sheetsStandard Paper Xerox-4024 (LT) Xerox-RX80 (A4)

75g/m2

(20lb)80g/m2

600 sheets Standard Paper FX-L (A4) 64g/m2

200 sheetsJapanese Official Postcard*1 190g/m2

OHP, Labels --

Height60mm

Envelopes (Monarch, C10, DL, C5)*1,2 --

Height 60mm

Standard or custom size shown 1-1060-105g/m2

(16-28lb)

ption

Cassette 2Same specification as Cassette 1.

Cassette 3

Envelope Feeder

75 sheets Envelopes (Monarch, C10, DL, C5)*1,2 60-105g/m2

(16-28lb)50 sheets Envelopes (C5)*1,2

100 sheets Japanese Official Post Card*1 190g/m2

Height 24mm

Standard or custom size shown 1-10 60-105g/m2

(16-28lb)

Table 1-4. Ma

Combination MP Tray Casse

1(Standard

Component)


550 sh600 sh


550 sh600 sh


550 sh600 sh


P 15

ional items.

n.

St

3mm)

--

mm)

--

0mm2)

--

0mm6)

--

mm -- -- --

0mm -- --

4mm9)

--

4mm)

--

0mm9)

--

4mm)

--

Paper Size (continued)

e Japan AbroadMP

TrayCassette 1, 2, 3*1

Duplex Printingroduct Description Specifications

Paper Size

*1 Cassette 2 and 3 are opt: Can be fed.: Auto paper size detectio

Table 1-5. Paper Size

Paper Type Paper Size Japan AbroadMP

TrayCassette 1, 2, 3*1

Duplex Printing

andard Paper

A4210.0 x 297.0mm

(8.27 x 11.69)

A5148.0 x 210.0mm

(5.83 x 8.27) --

B5182.0 x 257.0mm

(7.16 x 10.12) --

ISO-B5176.0 x 250.0mm

(6.93 x 9.84) --

Letter(LT)

215.9 x 279.4mm(8.5 x 11.0)

Half Letter(HLT)

139.7 x 215.9mm(5.5 x 8.5)

--

Legal 13215.9 x 330.2mm

(8.5 x 13.0)

Legal 14215.9 x 355.6mm

(8.5 x 14.0)

EXE184.2 x 266.7mm

F4210.0 x 330mm

(8.27 x 13) --

SpecialPaper

COM10104.8 x 241.

(4.13 x 9.5

Monarch98.4 x 190.5

(3.88 x 7.5

C5162.0 x 229.

(6.38 x 9.0

DL110.0 x 220.

(4.33 x 8.6

Index(3 x 5)

76.2 x 127.0(3 x 5)

Japanese Official

Postcard100.0 x 148.

Label

A4210.0 x 297.

(8.27 x 11.6

LT215.9 x 279.

(8.5 x 11.0

OHP

A4210.0 x 297.

(8.27 x 11.6

LT215.9 x 279.

(8.5 11.0

Table 1-5.

Paper Type Paper Siz


P 16

x 439 (D) x 413 (H) mm

tput tray is extended.xtension output tray are extended.ray is extended.in unit.

26 kgdge: 27.7 kg

9.8 kg2.5 kg1.8 kg1.2 kg

St

O

ptional Unit Dimension

m) Depth (mm) Height (mm)

433 175

293 (455*1) 142 (234*2)

290 (343*3) 116

250 98roduct Description Specifications

Consumables Imaging Cartridge

Applicable Paper Size to Feed:

Paper Feed Standard Center-line reference for each paper size.

Output Paper Capacity

*1 Off-set Deal = More than 10mm

Dimension

Main Unit: 422 (W)

Optional Units:

*1 When the extension ou*2 When exit chute and e*3 When extension feed t*4 Installed inside the ma

Weight

Main Unit:Main Unit + Imaging Cartri

Optional Units:LCP Unit:Shifter:Envelope Feeder:Duplex Unit:

Table 1-6. Applicable Paper Size to Feed

Paper Width Paper Length

Standard

MP Tray76.2-215.9mm

(3-8.5 inch)127-355.6mm

(5-14 inch)

Cassette 198.4-215.9mm(3.87-8.5 inch)

148.5-355.6mm(5.85-14 inch)

Option

Cassette 2 and 398.4-215.9mm(3.87-8.5 inch)

148.5-355.6mm(55.85-14 inch)

EnvelopeFeeder

98.4-178.0mm 148.5-254.0mm

Table 1-7. Output Paper Capacity

Paper Output Method

Capacity Paper SizeUsable Paper

Thickness

andardFace

Down500 sheets

Standard Paper Xerox-4024 (LT) Xerox-RX80 (A4)

75g/m2 (20lb)80g/m2

Standard Paper FX-L (A4) 64g/m2

ption Shifter*1

500 sheets

Standard Paper Xerox-4024 (LT) Xerox-RX80 (A4)

75g/m2 (20lb)80g/m2

Standard Paper FX-L (A4) 64g/m2

Paper Width: 98.7-215.9mm (3.87-8.5 inch)Paper Length: 148.5-355.6mm (5.85-14 inch)

Table 1-8. O

Width (m

LCP Unit 422

Shifter 422

Envelope Feeder 289

Duplex Unit*4 315


P 17

ationtrophotographic method using dry one-ponent developing.

er Diode

(Organic Photo Conductor) Drum

ler Charging Method

osed Area Development

-component magnetic toner

ler Transfer

t Roller

er Power Variable (adjustment with videomand is possible.)

C

Mroduct Description Specifications

Power Supply100V Model: 100V/120V 90-132V (50-60Hz 3Hz) 200V Model: 220V/240V 198-264V (50-60Hz 3Hz)

Power Consumption*1

*1 Controller Supply: 3.3V/5A, 5V/2.5A*2 Controller Consumption: 10W(3.3V/3A)

Machine Life: 600,000 pages or 5 years, whichever comesearlier.

Acoustic Noise (based on ISO7779):

*1 Measurement is done with MP Tray closed.*2 Options: Duplex Unit, Cassettes 2 and 3, Envelope Feeder, and

Shifter.

Ozone Concentration TBD (Less than 0.01ppm, in accordancewith Blue Angel).

Toxicity OPC, toner, and plastics materials are allnon-toxic.

1.2.3 Process Specific Method Elec

com

Light Source Las

Photoconductor Unit OPC

Charging Rol

Developing Exp

Toner One

Transfer Method Rol

Fixing Hea

Density Adjustment Lascom

Table 1-9. Power Consumption

100V 120V 220-240V

Max Rated Current 8A 6.66A 3.33A

Poweronsumption

Maximum 800W 800W 800W

Continuous Printing (Average) TBD 386W 315W

Stand-by (Average)

Heater ON TBD 96W 95W

Power Save(Average)

Heater OFF*2 30W 30W 30W

Table 1-10. Acoustic Noise

Stand-by Power Saving Printing

Main Unit*1 35 dB (A) Background Noise 49.5 dB

ain Unit + Option*2 -- -- 53.0 dB


P 18

1.

ted on other color or black/white laseriers.ck together.

me postcards with pre-printed pictures, the correctly due to paper particles adherring tor. If this occurs, clean the printer as describedaintenance.

y and image quality guaranteed.y and image quality guaranteed.used paper types.ble.

. Paper Batch Division

Special Paper

HPJapanese

OfficialPostcards

LabelsThickPaper

Evnvelopes

X X X

X X X X Xroduct Description Specifications

2.4 Paper SpecificationPaper Type

Standard Paper Xerox 4024 (75 g/m2), RX-80 (80 g/m2)

Plain Paper60 g/m2 - 105 g/m2 (16 lb - 28 lb)Photocopier paper, bond paper, recycled paper

Special PaperLabels, Japanese official postcards, transparency films, Colored paper, thick paper, DTP paper, letter-head

Note 1 lb: Ream weight = lb/500 sheets/17x22 (431.8 x 558.8mm)g/m2: 1 g/m2 = 0.2659763 lb

Note 2 Do not use any of the paper types listed below with this printer.They may cause defective printing, paper blockages, or damageto the printer.

- Carbon paper, non-carbon paper, thermal paper, pressure- sensitive paper, acidic paper- Paper previously printed in a thermal printer or inkjet printer- Extra thick or extra thin paper- Damp paper- Surface-coated paper or surface treated color paper.- Extra smooth or glossy paper. Extra rough paper. Paper with significantly different roughness on each surface.- Paper with punched holes or perforations.- Folded, curled, or tom paper.- Irregularly shaped paper or paper with non-perpendicular corners.- Sheets of labels that peel off easily.- Paper with glue, staples, or clips attached.- Special inkjet paper (superfine paper, glossy film, etc.)- OHP film for color laser printers or photocopiers.

- Sheets already prin printers or photocp- Sheets of paper stu

Note 3 When printing on sopaper may not feedthe paper-feed rollein Section 1.2.12 M

Paper Batch Division

* Option Paper feeding reliabilit Paper feeding reliabilit

Restricted to normally X Paper feeding not possi

Table 1-11

StandardPaper

PlainPaper O

MP Tray

Cassette1/*2/*3

Env. Feeder*

X X

Duplex Unit*


P 19

roduct Description Specifications

Printing Area

Guaranteed printing area:Entire paper area except for a 4mm margin at each edge (see the figure shown below). (a1, a2, c1, c2 = 4mm)

Figure 1-2. Printing Area

GuaranteedPrinting Area

4mma2

4mma1 b

4mm

4mm c2d

c1


P 20

1.

S

F

O

F

S

mountedAutomatic detection by connector.

mountedAutomatic detection by connector.

nAutomatic detection by photosensor and actuator.

e 1-12. Sensors

d Item Detection Method Commentsroduct Description Specifications

2.5 SensorsTable 1-12. Sensors

Unit Detected Item Detection Method Comments

Imaging Cartridge

Mounted/unmounted Exist

Genuine SEC product

Combination of SW on the main unit and Key on the cartridge.

Toner near endAutomatic detection with magnetic sensor.

Detects residual volume approx. 3.3%(A4/5% duty: 500 pages)

tandardPapereeders

MP Tray Out of paperAutomatic detection by photosensor and actuator.

Cassette 1

Cassettemounted/unmounted

By sensor SW.

Out of paperBy photosensor and actuator.

Residual paperBy photosensor and actuator.

Detects 50 30 sheets.

Paper size By sensor switches. 7 sizes

ptionalPapereeders

CassetteUnit

Same as Cassette 1.

EnvelopeFeeder

Unitmounted/unmounted

Automatic detection by connector.

Out of paperAutomatic detection by photosensor and actuator.

tandardPaper OutputUnits

FaceDown

Full detectionAutomatic detection by photosensor and actuator.

Optional Paper Output Units

Duplex Unit

Unitmounted/un

Shifter

Unitmounted/un

Full detectio

Tabl

Unit Detecte


P 21

1.

uracy

: 2.0mm

: 2.5mm

anning Direction (202mm) 1.27mmnning Direction (289mm) 1.82mm

pages or 5 years, whichever comes earlier.ng replacing maintenance parts by serviceians)

inutes averager service technician to locate and repair)

d environment)

S

S

S

S

Sroduct Description Specifications

2.6 Reliability, Durability, ServiceabilityMPBF 200,000 pagesNote: This figure indicates the mean pages until a failure requiring

part replacement or failure unrecoverable by user occurs.

Printing Volume Maximum of 75,000 pages/monthAverage 5,000 pages/month (one-side printing)

Paper Feeding Reliability

Printing Start Position Acc

Main Scanning Direction

Sub Scanning Direction

Skew0.63%(Reference) A4: Main Sc

Sub Sca

Durability 600,000(includitechnic

ServiceabilityMTTR: In 30 m

(time foa failure

Output Paper Curl HeightMax. 12mm (in the standar

Table 1-13. Cassette 1/2/3 (Cassette 2, 3 are optional)

Jam RateMultiple-sheet

Feed Rate

One-Side Printing

Duplex PrintingOne-Side / Duplex

Printing

tandard Paper 1/10,000 1/6,666 1/5,000

Plain Paper 1/5,000 1/3,333 1/2,500

pecial Paper 1/1,500 -- 1/800

Table 1-14. MP Tray

Jam RateMultiple-sheet

Feed Rate

One-Side Printing

Duplex PrintingOne-Side / Duplex

Printing

tandard Paper 1/1,000 1/666 1/300

Plain Paper 1/500 1/333 1/150

pecial Paper 1/100 -- 1/50

Table 1-15. Envelope Feeder (Option)

Jam Rate Multiple-sheet Feed Rate

One-Side Printing One-Side Printing

tandard Paper 1/300 1/300


P 22

1.

NO

mentemperature & Humidity

Main Unit

0-35C 0-35C

High temperature 35-40C

Low temperature -20-0C

(12 months) 15-80%

High humidity. 80-95%

Low humidity. 5-15%roduct Description Specifications

2.7 Operating ConditionsTemperature and Humidity

TE: Including consumables.No condensation.

Barometric Pressure Altitude: 0-3100m

Horizontality Max. 1 tilt (front-rear or left-right)

Illumination Max. 3000 lx (no direct sunlight)

1.2.8 Storage Environ

Table 1-16. Temperature & Humidity

Condition Main Unit

Temperature

Operation 5-35C

NoOperation

-20-40C

Humidity

Operation 15-85%RH

NoOperation

5-85%RH

Table 1-17. T

Condition

Temperature

Normal condition(12 months)

Severe condition(Max. 1 month)

Humidity

Normal condition

Severe condition(Max. 1 month)


P 23

1.Th

del, 100V input)

el, 120V input)

el)roduct Description Specifications

2.9 Electrical Characteristicse following items do not apply to the Optional Units.

AC Line Noise

Pulse Width: 50-1000ns

Pulse Polarity: +/-

Repeating: Asynchronous

Mode: Common / Normal

Voltage: 1kvNo component damage to 2kv.

Instantaneous Power Failure

DIP 100% (at rated voltage - 10%)No abnormality to quality in print cycle.

Static Electricity Resistance

Up to 10kv No hardware error.No software error that the user cannot remedy.

Up to 15kv No component damage.

Inrush Current

1/8 cycle 100A max.

1/2 cycle 50A max.

Insulation Resistance 10M max.

Dielectric StrengthNo breakdown when the following voltage is applied for one minute.

Leak Current

0.25mA max. (100V mo

3.5mA max. (100V mod

3.5mA max. (200V mod

Across Primary and Chassis

100V Model AC1000V

200V Model AC1500V


P 24

1.ThDepro

No effects on the human body (conformingto OSHA, TSCA, EINECS, Labor Safety Law,CSCL).

No effects on the human body (conformingto OSHA.)

Conforming to UL478, Edition 5.

Conforming to Swiss environmental-protection laws (not including Cds).roduct Description Specifications

2.10 Applicable Standards and Regulationse engine specification meets the following standards and regulations. pending on the destination, some standards and regulations apply to the duct only when including controller.

Power Consumption Complies with International EnergyStar Program standards.

Others

Toner

OPC

Ozone Generation

Materials

Table 1-18. Safety Standards

Model Name Applicable Standards

100V ModelUL 1950CSA 22.2 No. 950NOM

200V Model

IEC 950CCIB, Russian Safety Standards (TBD)Singapore Safety Standards (TBD)Hong Kong Safety Standards (TBD)

Table 1-19. Safety Regulations (Laser Radiation)


100V Model FDA (NCDRH) Class 1

200V Model IEC 825 Class 1

Table 1-20. EMC


100V ModelCNS 13438 (Taiwan)FCC Part15 Subpart B Class B/CSA C108.8 Class B

200V Model

EC EMC Directive 89/336/EEC EN55022 Class B EN61000-3-2 EN61000-3-3 EN50082-1AS/NZS 3548 Class B (Australia)


P 25

1.

lements.

-22. Maintenance

g Maintenance byPossibility of User

Maintenance

ror User --

er ,000 Service Personnel O

r-feed ed.

User --



er ry s.

User O

er ry ets.

Service Personnel Xroduct Description Specifications

2.11 ConsumablesSpecifications

*1 The above is the approximate number of printable sheets when usingcontinuous printing of Letter or A4 landscape sheets at 5% of theimage occupation ratio (SEF).The cartridge life varies depending on the image occupation ratio andtype of printing (continuous, intermittent, print density and tonersaving).

*2 If the number of photoconductor rotation reaches the valueequivalent to the continuous printing of 30,000 pages before thetoner life end is detected, it is handled as if toner empty of ImagingCartridge was detected.

Storage Environment Refer to Section 1.2.8.

1.2.12 Maintenance

O: Can be replaced without imp

Table 1-21. Consumables

Name Contents Life (Toner Consumption)

Imaging Cartridge

OPC Drum Charger Developer Black, one-component,

magic toner

Average 15,000 pages*1,*2

Table 1

Maintenance Item Timin

Cleaning Transfer Roller

When an eroccured.

Replacing Transfer Roller Unit

Replace aftprinting 200pages.

Cleaning Paper Feed Roller

When papeerror occur

Replacing Paper Feed Roller Kit


Replacing Fuser Unit


Replacing Imaging Cartridge

Replace aftprinting eve15,000 page

Retard Roller Kit of Envelope Feeder

Replace aftprinting eve100,000 she


P 26

1.

Dimension with Optional Units

(mm)roduct Description Specifications

2.13 External Dimension

Figure 1-3. External Dimension Figure 1-4. External

(mm)


P 27

1.

1.2

1.2

If tpri

nfigured in the EPL-N2050 controller. The esistors, and they must be set at the factory. jumper settings.

D

E

M

C1

EF

ry Setting for Printing Menu

Factory Setting for Printing Menu - Page Size

A4

LT

24. Jumper Setting

IOP2 IOP3 INPT5 PB0

RJ5 RJ6 RJ7 RJ8 RJ9 RJ10 RJ11 RJ12

roduct Description Specifications

2.14 Other Specifications

.14.1 Setting Direction for Envelopes

*1 Only for not adhesive or adhesive tape.*2 Option*3 Set the flap upwards.*4 Set the flap downward.

.14.2 Paper Supply

his is lower than the bin which is supplying paper, paper-supply during nting is possible.

1.2.15 ConfigurationThe following settings can be cosettings are made with jumper rSee Table1-24 for details of the

Feed irection

nvelopesCOM10, DLMONARCH

COM10, DLMONARCH

C5 C5

P Tray O*3 X O*3 O*1, *3

assette , 2*2, 3*3

O*4 O*4 O*4 O*1, *4

nvelope eeder*2

O*3 X O*3 O*1, *3

Table 1-23. Facto

RJ7 installed (RJ8 not installed)

RJ8 installed (RJ7 not installed)

Table 1-

IOP0 IOP1

RJ1 RJ2 RJ3 RJ4

EAI Latin

Others


P 28

1.Th

Specifications

i-directional high-speed interface

ty, Nibble, ECP

-830B (D7A) DDK or equivalent

or equivalent

this printer is as follows. The information is ks, but the actual data is a continuous

ak characters. The CMD items are not in US items are not included. The DES item ected by a space. XXXX is the product name.

P9, PRPXL24-01, PCL, HPGL2-01,

P9, PRPXL24-01, PCL, HPGL2-01,POSTSCRIPT;

P(Iroduct Description Specifications

2.16 Host Interface Specificationse EPL-N2050 has the following host interfaces as standard.

IEEE 1284 parallel interface

Ethernet interface

RS232C serial interface

Option Type B: 1 slot

Token Ring: 1 slot(Remove Type B guardrail to install Token Ring)

Each interface will be affected by XXX I/F Use/No Use setting in each I/F Menu of SelecType.

Note: Type B and Token Ring, or Ethernet and Token Ring should notbe installed at the same time.Network Menu-Topology setting specifies which interface to beused.

Figure 1-5. Rear View (Interface Bracket)

1.2.16.1 Parallel Interface

Interface Type: IEEE 1284 b

Operation Modes: Compatibili

Connector Type: 57RE-40360

Compatible Plug: Amphenole

The default device ID setting forshown below including line breacharacter string with no line breorder. The CID, MODE and STATcontents are MFG and MDL conn

When PS3 is not installed:

MFG: EPSON;CMD: PJL, EJL, ESCPL2, ESC ESCPAGE-04, PCLXL;MDL: XXXX;CLS: PRINTER;DES: EPSON XXXX;

When PS3 is installed:

MFG: EPSON;CMD: PJL, EJL, ESCPL2, ESC ESCPAGE-04, PCLXL, MDL: XXXX;CLS: PRINTER;DES: EPSON XXXX;

(1) (2)

Optional Type B Slot or Token Ring Slot

Description of LEDs:(1) 100Base/10Base lamp (Orange) lights when 100Base is selected.(2) Link/receive lamp (Green)

Ethernet I/F Connector

arallel I/F ConnectorEEE 1284 B connector)

Serial I/F Connector(DSUB 25-pin connector)

Top Bottom


P 29

MFfiechbe

Wh

Wh

1.2

IntTraTra

PaStaStoDaHaSoCo

e Specifications

aseT, 100BaseTX, Half Duplex, Duplex: Automatically switched when powerrned on.

, RIP, SAP, PrintServer, RemotePrinter, NDS,

R, FTP, TELNET, ARP, ICMP, DHCP, SNMP,

TP, PAP, AARP, NBP, ZIP, RTMP)Peripheral Control Protocol)

5

ir Category 3 or 4 or 5 STP (10BaseT,BaseTX)compliance with FCC Class B, EN55022s B, and VCCI Class B, a shielded type cablet be used.

5. Pin Assignments

Signal I/O

Tx+ O

Tx- O

Rx+ I

N.C. -

N.C. -

Rx- I

N.C. -

N.C. -roduct Description Specifications

G, MDL, DES and CID of Device ID are user-redefinable. The DES and CID lds do not respond to the default value, but respond to the defined aracter string only if redefined. Device ID upon redefinition is as shown low. **** is a user-defined character string.

en PS3 is not installed:

MFG: ****;CMD: PJL, EJL, ESCPL2, ESCP9, PRPXL24-01, PCL, HPGL2-01, ESCPAGE-04, PCLXL;MDL: ****;CLS: PRINTER;DES: ****;CID: ****;

en PS3 is installed:

MFG: ****;CMD: PJL, EJL, ESCPL2, ESCP9, PRPXL24-01, PCL, HPGL2-01, ESCPAGE-04, PCLXL, POSTSCRIPT;MDL: ****;CLS: PRINTER;DES: ****;CID: ****;

.16.2 Serial Interface Specification

erface Type: RS-232Cnsfer Format: Asynchronous Modensfer Rates: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400,

57600, 76800, 115200rity: None, even, oddrt Bit: 1p Bit: 1, 2

ta Length: 7, 8rdware Protocol: DTR, DSRftware Protocol: Xon/Xoff (supports Robust)nnector Type: 17LE-13250-27 (D57) DDK or equivalent.

1.2.16.3 Ethernet Interfac

Interface Type: 10BFullis tu

Communication Protocol:

1) IPX/SPX (IPX, SPX, NCPSNMP)

2) NetBIOS (SMB)3) TCP/IP (IP, UDP, TCP, LP

HTTP)4) AppleTalk (ELAP, DDP, A5) ENPC (EPSON Network

Connector Type: RJ4

Appropriate Cable: 2-pa100For Clasmus

Table 1-2

Pin

1

2

3

4

5

6

7

8


P 30

Pri

Pro

Em

En

Em

As shown in the table.

Entity Type of default Emulation andEPSONPAGE4 are returned.roduct Description Specifications

nter Name: Factory default setting is the same as Product Name.

duct Name: Product Name

ulation Type: See the table below.

tity Type: See the table below.

*1 Added when PS3 is installed.*2 RCC cannot be selected by users.

ulation Type:

When Emulation is Auto:

PS not started: AUTO (Emulation Type 1, 2, 3...)PS started: EJL (POSTSCRIPT-00, other Emulation

Type 1, 2, 3...)

When Emulation is fixed:

EJL (Default Emulation Type, other EmulationType 1, 2, 3...)

Entity Type:



Table 1-26.

Emulation Emulation Type Entity Type

PS*1 POSTSCRIPT-00*1 LaserWriter*1

ESC/Page ESCPAGE-04 EPSONPAGE4

LJ4 PCL5E-00 EPSONPCL5

PCLXL - -

RCC*2 - -

1239X PRPXL24 EPSONPRPXL24

GL/2 HPGL2 EPSONHPGL2

FX ESCP9 EPSONFX

ESCP2 ESCPL2 EPSONLQ2


P 31

1.2

Thdepri

Ma

Pri

Pro

Em

En

O (Emulation Type 1, 2, 3...) (POSTSCRIPT-00, other Emulatione 1, 2, 3...)

(Default Emulation Type, other Emulatione 1, 2, 3...)

As shown in the table.Entity Type of default Emulation and EPSONPAGE4 are returned.roduct Description Specifications

.16.4 Type B Interface Specification

is printer is equipped with a Type B option interface slot as standard. For tails of the Type B option interfaces which can be used, refer to the page nter option list for overseas market.

in System Type: MTP1200dpi, PW10200dt1200dpi, PRG(****)rev,AP1300ma, SPD0fast, D4**** is ROM version.D4 from version 2. Designed for Level 3.

nter Name: Factory default setting is the same as ProductName.

duct Name: Product Name

ulation Type: See the table below.

tity Type: See the table below.

*1 Added when Adobe PS 3 kit is installed.*2 RCC and DIAG cannot be selected by users.

The cassette paper size detection jumper setting is not affected.

Emulation Type:


PS3 not started: AUTPS3 started: EJL

Typ


EJLTyp

Entity Type:

When Emulation is Auto:When Emulation is fixed:

Table 1-27.

Emulation Emulation Type Entity Type

PS*1 POSTSCRIPT-00*1 LaserWriter*1

ESC/Page ESCPAGE-04 EPSONPAGE4

LJ4 PCL5E-00 EPSONPCL5

RCC*2 - -

I239X PRPXL24 EPSONPRPXL24

GL/2 HPGL2-01 EPSONHPGL2

FX ESCP9 EPSONFX

ESCP2 ESCPL2 EPSONLQ2


P 32

1.

1.

(

(

1-28. Parts Name

Notes

20 characters/row (5 x 7 dot matrix)

Color --- Green

Color --- Yellow

Color --- Red

1 LED Color --- Green

2 LED Color --- Green

Color --- Green

Doubles with shift switchroduct Description Control Panel

3 Control Panel

3.1 Exterior View and Parts Name

Figure 1-6. EPL-N2050 Control Panel

Paper Source Page Size Manual Feed Orientation

RITech Copies MP Tray Size Toner SaveMode

Menu Item Value Enter

Continue Form Feed On Line

Alt Reset

SelecType

(1)

(2)(3)(4)

(15)

(14)

(9) (8)(10)(11)

13)

12)

(6)

(5)

(7)

Table

Name

(1) LCD Panel

(2) On Line LED

(3) Data LED

(4) Continue LED

(5) One Touch setting mode

(6) One Touch setting mode

(7) SelectType Mode LED

(8) On Line Switch

(9) Form Feed Switch

(10) Continue Switch

(11) SelecType/Alt Switch

(12) Menu Select Switch

(13) Item Select Switch

(14) Value Select Switch

(15) Enter Switch


P 33

1.Thpri

n Functionscial operation functions supported by this en to users except for the hexadecimal dump aining toner.

to be indicated on the status sheet will beby the controller side.

ecial Operation Functions

Operation Method

e printer while pressing the Form Feed switch.

e printer while pressing the Value selection

e printer while pressing On Line + Form Feed.

e printer while pressing On Line + Continue +

e printer while pressing the Continue switch.

e printer while pressing Alt + Item +Value +

e printer while pressing On Line + Alt + Value.

e printer while pressing On Line + Alt + Enter.

e printer while pressing On Line + Form Feed +

Menu + Item + Value + Enter when a service as occurred.

r twice after CPU reset at the occurrence of a l error.roduct Description Control Panel

3.2 One Touch Setting Functionse following table lists the one touch setting functions supported by this nter.

1.3.3 Special OperatioThe following table lists the speprinter. The functions are not opfunction, initialization of the rem

*The total number of copies initialized as it is counted

Table 1-29.

Paper Source Page Size Manual Feed Orientation

RITech Copies MP Tray Size Toner Save

Menu Item Value Enter

Table 1-30. Sp

Function

Hex. dump Turn on th

Support ModeTurn on thswitch.

Reset of remaining toner

Turn on th

Initialization of EERROM*

Turn on thMenu.

Initialization of panel settings

Turn on th

Forced erasing of flash ROM module.

Turn on thEnter.

Program ROM update

Turn on th

Copy of ROM module

Turn on th

Maintenance modeTurn on thContinue.

CPU reset at service call occurrence

Press Alt +call error h

Printing of error sheet

Press Enteservice cal


P 34

1.

1.ThdriIf tmeanThthe

1.Thto roduct Description Notes on Operation

4 Notes on Operation

4.1 Powering Offis printer has an internal non-volatile memory (EEPROM), and hard disk ve.he printer is powered off during the process of writing to the non-volatile mory or hard disk drive, the writing operation cannot be guaranteed, and

error may occur the next time the printer is turned on.e following cases are those in which the memory is being rewritten, and refore, the printer should not be turned off.

From the moment the printer is turned on until the On Line indicator lights.

While the On Line indicator is flashing.

While the printer is printing (while the paper feed motor is operating).To stop the printer, either put it off line or carry out Reset.

While the Data indicator is lit or flashing.

4.2 High-Temperature Componentse fuser unit inside the printer becomes hot, and caution must be taken not touch the fuser unit while opening the printer to clear paper jam.

C H A P T E R

O ATING PR2INCIPLESPER


O 36

2.

Thme

phic Printing, the EPL-N2050 uses the electrophtographic a semi-conductor laser beam scanning perating Principles Overview

1 Overview

is chapter explains functions and operating principles of the engine chanism and the controller of the EPL-N2050.

2.1.1 ElectrophotograLike other EPSON page printersprinting system combined with system, as illustrated below.

Figure 2-1. Electrophotographic Process Components


O 37

Shto ste

6. Fusing Paper Exitsperating Principles Overview

own below is the block diagram of the print cycle of the EPL-N2050. Refer Chapter 2 of the EPL-N1600 Service Manual for detailed description of each p as the print cycle is basically the same.

Figure 2-2. Block Diagram of Print Cycle

1. Charge 2. Exposure 3. Development 4. Transfer 5. Discharge

7. Cleaning

Electrophotographic Cycle

Cycle repeats for the next print.

Paper Enters


O 38

2.ThOntaktak

Onco

onents Related to Paper Pathperating Principles Overview

1.2 Paper Pathere are three paths that a sheet of paper can follow during one print cycle. e path is taken if paper is fed from the paper cassette. Another path is en if paper is fed from the Multiple-Bypass Feeder (MBF). The third path is en if paper is fed from the optional Envelope Feeder Assy.

the right is a cut-away side view of the printer showing the major mponents that are directly related to the paper path.

Figure 2-3. Paper Paths Figure 2-4. Comp


O 39

2.ThAstheThfol

THE ROLL ASSY MBF

by the Motor Assy Main is transmitted Pick Up that drives the Roll Assy MBF. When transmits the energy from the Gear 14 to the he end of the Shaft Assy MBF.

ransmission to Roll Assy MBF

FRONT

Main

Gear14

Gear Pick Up

Gear Assy Mainperating Principles Overview

1.3 Drive Flowe Gear Assy Drive takes the mechanical energy that is created by the Motor sy Main and transmits it to four printer subsystems: the Clutch Assy Turn, drum gear of CRU, the Fuser Assy, and Optional Envelope Feeder Assy. e Motor Assy Exit provides the power needed by the exit component. The lowing pages show each drive section in greater detail.

Figure 2-5. Block Diagram of Drive Flow Through the Printer

DRIVE TRANSMISSION TO

The mechanical energy created through the Gear 14 to the Gearthe Solenoid Pick Up actuates, itGear Pick Up that is located on t

Figure 2-6. Drive T

Motor Assy


O 40

DR

ThthrTuAs

FEEDER ASSY

by the Motor Assy Main is transmitted utch Assy Turn, idle gears to the Clutch Assy n and the Clutch Assy Feed actuate, it Assy of the Feeder Assy.

Transmission to Feeder Assyperating Principles Overview

IVE TRANSMISSION TO ROLL ASSY TURN

e mechanical energy created by the Motor Assy Main is transmitted ough the Gear Assy Drive to the Clutch Assy Turn. When the Clutch Assy rn actuates, it transmits the energy to the Roll Assy Turn and the Clutch sy Feed to the described in the next page.

Figure 2-7. Drive Transmission to Roll Assy Turn


The mechanical energy created through the Gear Assy Drive, ClFeed. When the Clutch Assy Turtransmits the energy to the Roll

Figure 2-8. Drive


O 41

DR

Ththrthe

DRUM AND BTR

r Assy Main is transmitted through the Gear ar that is located on the end of the Drum. The s located on the end of the BTR Assy.

ransmission to Drum and BTRperating Principles Overview

IVE TRANSMISSION TO ROLL REGI RUBBER

e mechanical energy created by the Motor Assy Main is transmitted ough the Gear Assy Drive to the Clutch Regi that is located on the end of Roll Regi Rubber.

Figure 2-9. Drive Transmission to Roll Regi Rubber


The energy created by the MotoAssy Drive to the Drum Drive GeDrum drives the Gear BTR that i

Figure 2-10. Drive T


O 42

DR

ThthrIdltra

EXIT COMPONENTS

by the Motor Assy Exit is transmitted through ear Exit 17). Those Gears are located on the r) and the Roll Assy Mid-2 respectively.

ansmission to Exit Componentsperating Principles Overview

IVE TRANSMISSION TO FUSER ASSY

e mechanical energy created by the Motor Assy Main is transmitted ough the Gear Assy Drive to the Gear Idler of the Fuser Assy. The Gear er transmits energy to the Gear H/R located on the Heat Roll, which nsmits energy to the Gear Decurl Roll.

Figure 2-11. Drive Transmission to Fuser Assy


The mechanical energy created small gears to the three Gears (GRoll Assy Mid-1 (upper and lowe

Figure 2-12. Drive Tr


O 43

2.Th

CO

Le

Tra

Ch

ponents of Cover Assy Frontperating Principles Overview

1.4 Main Component Functionis section explains the function of the printers major components.

Covers

Paper Cassette

Paper Feeder

Chute MBF

P/H Assy

Chute Trans & Fuser

Exit

Drive & Electrophotographics

Frame & Size Sensor

VERS

ver and Latch Assies: Latches the Cover Assy Front to the printer frame. Pressing the Lever disengages Latch Assy L and Latch Assy R so the Cover Assy Front can be opened.

y Assy MBF: The paper tray for use with the Multi-bypass Feeder (MBF).

ute ENV and Chute MBF:The paper path components that are used with the optional Envelope Feeder. The fed envelope passes between the Chute ENV and the Chute MBF. The bottom surface of the Chute MBF serves as part of the paper path for paper fed from the Tray Assy MBF.

Figure 2-13. Com


O 44

PA

Ca

Mo

onents of the Paper Cassetteperating Principles Overview

PER CASSETTE

ssette Assy: Holds various sizes of plain cut paper (Envelopes are fed by the optional Envelope Feeder Assy, and post cards are fed by the MBF).Adjust L and R of the Cassette Guides Assy to accommodate different sizes of paper. Adjustment of the Guide Assy End changes the position of actuators that press the Cams SW equipped on the right bottom of the Frame, and actuates the Paper Size Switches on the PWBA Size 1. Pattern of the actuated Size Switches signals the size of the paper loaded in the paper cassette.

tor Assy: Adjusts the face of the top sheet of paper stacked in the Cassette Assy with the Roll Assy of the Feeder Assy to ensure feeding operation from the Cassette Assy. This Motor Assy is engaged with the Shaft Assy Torque fixed with the Plate Torque, and actuates mechanism of lifting the front end of the Plate Assy Bottom conducted by the control signal from the PWBA HKB MCU, which is triggered by the Sensor Photo. Face Control is described on the next page.

Figure 2-14. Comp


O 45

PA

Clu

Clu

Fe

Ro

PW

es the Sensor Photo: No Pap 1. When paper is is actuator will swivel down and shield the r Photo: No Pap 1.

s the state of low paper of the Cassette Assy.

s the state that the paper level (the position of sheet of paper) goes near not so high to be feed. This sensor is actuated by the Support udger.

ssette Sub Assy is equipped with the or showing the paper level in the Cassette. dicator is attached to the Guide Indicator g along the Shaft Indicator. The Guide or is always depressed downward by the Indicator. The downward movement of the Indicator is disturbed by the Lever, whose r end is set below the Plate Assy Bottom. the Paper Cassette is full with paper pile, the ssy Bottom is located at the lowest position assette, that causes the position of the Guide

or and the Indicator at the highest position. gher the position of the Plate Assy Bottom is, er the position of the Indicator.perating Principles Overview

PER FEEDER

tch Assy Turn: Consists of a gear and an electric clutch. This is located on the end of a shaft of the Roll Assy Turn. This clutch controls the transmission of the drive power from the Gear Assy drive to the Roll Assy Turn by turning on and off the clutch magnet. When this clutch is activated, the drive power is transmitted to the Roll Assy Turn through the idle gears to the gear of the Clutch Assy Feed.

tch Assy Feed: Consists of a gear and an electric clutch. This is located on the end of a shaft of the Feeder Assy. This clutch controls the transmission of the drive power from the Gear Assy drive through the Clutch Assy Turn to the Roll Assy of the Feeder Assy by turning on and off the clutch magnet. When this clutch is activated, the drive power is transmitted to the Feeder Assy.

eder Assy: Consists of the Support Assy Nudger, Shaft Feed and Roll Assy. The task of this assy is to pick the paper from the Cassette Assy and feed it to the Roll Assy Turn. To ensure this task, the Support Assy Nudger acts as the actuator for the Sensor Photo: Face Control by swivelling itself up and down synchronizing the height of the stacked paper.

ll Assy Turn: This assy feeds the paper to the Regi position of the P/H Assy. The mechanical activity is the same as the Clutch Assy Turn.

BA Feeder: Connective interface between the Sensor Photos, the Clutches and Motor, and the PWBA Size 1 (or PWBA Size Option for the optional feeder). This PWBA also has the Sensor Photo: No Pap 1 which detects the out of paper of the Cassette when it shielded the sensing point by the Actuator N/P.

Actuator N/P: Actuatout, thSenso

Sensor Photo: Low Paper:Detect

Sensor Photo: Face Control:Detectthe topable toAssy N

Paper Level Indicator: The CaIndicatThis InrunninIndicatSpringGuide counteIn casePlate Ain the CIndicatThe hithe low


O 46

ts of the Shaft Assy MBF, Roll Assy MBF and m Pick Up MBF. This assy picks the paper e Tray Assy MBF.

ls the start and stop of the rotation of the Roll BF. This engages the Gear Pick Up located in

d of the Shaft Assy MBF.

s the existence of the paper on the MBF Tray.

omponents of Chute MBFperating Principles Overview

Figure 2-15. Components of Paper Feeder

CHUTE MBF

Roll Assy MBF: Consisthe Cafrom th

Solenoid Pick Up: ControAssy Mthe en

Sensor Photo: Paper Set: Detect

Figure 2-16. C


O 47

P/

Se

To

Re

Clu

Ro

Ro

Components of P/H Assyperating Principles Overview

H ASSY

nsor Photo: Regi Detects when a sheet of paper arrives at the Inlet and Chute Bottom Upper. The Sensor Photo: Regi is part of the components that are used to register the paper with the image on the drum.

ner Sensor: Magnetic sensor that monitors the level of toner remaining in the CRU.

tard Assembly: Prevents the MBF Roll Assembly from feeding more than one sheet of paper at a time.

tch Regi: Consists of the gear and the magnetic clutch and is located on the end of the Roll Regi Rubber. When the Clutch Assy Regi is actuated, the drive power is transmitted to the Roll Regi Rubber.

ll Regi Metal

ll Regi Rubber: The rotation of these Rolls is controlled by the Clutch Regi, and determines the register position of the paper with the image on the Drum.

Figure 2-17.


O 48

CH

BT

BT

mponents of Chute Trans Fuser (1/2) BTR Chute Assyperating Principles Overview

UTE TRANS & PAPER

R Assy (Bias Transfer Roll):Transfers the toner image from the drum to the sheet of paper.The BTR applies a positive charge to the back of the sheet as it travels between the BTR and the surface of the drum. The positive charge attracts the negative charged toner image on the drum, and the image transfers to the paper.

R Chute Assy: Uses the Detack Saw to strip the sheet of paper from the surface of the drum. The Detack Saw electrically neutralizes the paper so it will easily peel away from the drum. This assy then transfers the paper into the Fuser Assy.

Figure 2-18. Co &


O 49

Fu r Exit:rs when a sheet of paper passes the paper

The sensor is ON when paper actuates the or Exit of the Sensor Exit. Roll:ts paper from wrapping around the Heat Roll. curl Roll strips the leading edge of the paper he Heat Roll, and bends the paper down the Pressure Roll and into the exit area.or Exit/Sensor Exit:rs when a sheet of paper passes the paper

f Chute Trans & Fuser (2/2) Fuser Assyperating Principles Overview

ser Assy: Uses heat and pressure to permanently fix the toner image onto the paper.The Fuser Assy is made up of nine major components.Heat Rod:An electric coil that is sealed inside a glass tube. The Heat Rod is located inside the Heat Roll and provides the heat necessary to melt the toner image onto the paper.Temperature Sensor:Monitors the Heat Roll surface temperature, switching the Heat Rod on or off to maintain the proper temperature range. The Temperature Sensor is a temperature sensitive resistor that rides the Heat Roll surface, and it functions as the first-stage, fuser-overheat protection.Heat Roll:A hollow, surface-coated metal tube that is heated by the Heat Rod, and in turn applies heat to the paper to melt the toner. The negative charge that builds up on the Heat Roll is shunted through a diode to frame ground.Pressure Roll:A solid, rubber-coated metal shaft that presses the paper between itself and the Heat Roll. This bonds the toner to the paper.Fuser Thermostat:Connected in series with the Heat Rod power supply, the Thermostat functions as the second-stage, fuser-overheat prevention. If the first stage fails to prevent the overheat, the Thermostat opens the circuit between the Heat Rod and the power supply.Fuse:Connected in series with the Heat Rod power supply, the Fuse functions as the third-stage, fuser over-heat prevention. If the both first and the second stages fail to prevent the fuser overheat, the fuse opens the circuit between the Heat Rod and the power supply.

SensoMonitooutlet.ActuatDecurlPrevenThe Deoff of talong ActuatMonitooutlet.

Figure 2-19. Components o


O 50

EX

Ro

Ro

Ga

Se

Ac

Mo

0. Exit Componentsperating Principles Overview

IT

ll Assy Mid-1

ll Assy Mid-2: Transports the paper from the Fuser Assy to the face-down output tray, or to the optional Shifter, Multibin Unit, or Duplex Assy.

te Exit: Switches the paper exit path to either the face-down output tray, or to the optional Shifter or Multibin Unit, if installed.

nsor Photo: Exit

tuator Full Stack: Detects when the face-down out is full of paper. This Senor Photo: Exit is also used to detect the paper exit.

tor Assy Exit: Drives the Roll Assy Mid-1 and the Roll Assy Mid-2.

Figure 2-2


O 51

DR

RO

e value. The voltage is used as the feed-back trol the speed of the motor.

anner Motor is driven by a three-phase, full-linear drive. The current to the motor coil is ed by a Hall amplifier matrix that uses the from the PD to signal when to switch .

nal /SCN MOT ON, from the PWBA HKB switches the Scanner ON. The signals SPI1 I2 select a ratio of frequency division of the ignal. This ratio switches the resolution of nned image. The signals are always at HIGH, resolution cannot be switched.

SOS (Start Of Scan):or that is in-line with the scanning laser The laser beam strikes the PWBA SOS at the f each scan to let the printer control circuitry hat a new scan is beginning.perating Principles Overview

IVE & ELECTROPHOTOGRAPHICS

S Assy: The ROS (Raster Output Scanner) Assy is the laser and the scanning hardware. The ROS is made up of three major components: the Laser Diode Assy, the Scanner Assy, and the PWBA SOS.

LD Assy (Laser Diode Assy):Converts electrical signals into optical signals. The LD Assembly generates the laser beam and maintains the laser output power at a constant level.

Scanner Assy:Routes the laser beam to the drum, and scans it across the drum surface. The Scanner Assy consists of a fifteen sided Polygon Mirror that is attached to the Scanner Motor. The Motor rotates at a constant speed. The spinning Polygon Mirror reflects the beam, through a series of lens and mirrors, onto the rotating drum surface. The movement of the spinning Polygon Mirror scans the beam from one side of the drum to the other; one scan line per mirror facet. This process repeats until the controller stops sending image data to the laser.

The Scanner Motor uses a phase-locked loop (PLL) for speed control.

The PLL compares the phase of the falling edge of the output signal from the Schmitt frequency generator (FG) with the rising edge of the Clock Signal (CLK). The output of the PLL is a voltage that is proportional to the differences in the phase of FG and CLK. The output is the phase detect (PD).

PD pulse duration indicates the amount of signal deviation observed. The frequency generator generates 15 pulses during each revolution of the Scanner Motor. A smoothing filter, using an integrating amplifier, converts the PD signal into a

voltagto con

The Scwave, switchsignalsphases

The sigMCU, and SPClock sthe scaso the

PWBAA sensbeam.start oknow t


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Th

2-21. ROS Assy

tes the drive power.

its the drive power created by the Motor ain to the Paper Feeder, the Fuser Assy, the

nd the Optional Envelope Feeder Assy.

U Sensor monitors the presence or absence CRU.perating Principles Overview

e Structure and Operation of the ROS:The laser light source for the ROS is a semiconductor laser diode with a maximum output of 3mW. A monitor circuit keeps laser output at a constant level. Image data received from the print controller modulates the laser beam, turning it on and off according to the image information.

The Current Switching Circuit switches the Laser Diode on and off according to /nP.DATA sent by the PWBA HKB MCU. When /nP.DATA is LOW, the laser is ON. When /P.DATA is HIGH, the laser is OFF.

The PWBA HKB MCU also supplies the laser drive current (VL1 and VL2). Circuits within the laser use VL1 and VL2 to maintain a constant drive current for the laser diode. If either VL1 or VL2 changes value, the current in IL1 or IL2 change accordingly. The current flowing through the laser Diode (IL) changes, and so does the current flowing through PD. PD monitors laser current, and supplies that information back to the MCU.

When you use Configuration Mode to adjust laser current, you are adjusting VL1 or VL2, so MO equals the value stored in NVRAM.

The Cylinder Lens and a slit in the ROS housing shape the laser light into an oblong beam. Mirror 1 and Mirror 2 direct the beam to the rotating Polygon Mirror. Each facet of the Polygon Mirror reflects the beam through correcting Lenses 1 and 2 and through Mirrors 3 and 4, and onto the drum surface.

The start of each scan, or of each facet reflection, is diverted by Lens 2 onto Mirror 2, which reflects the beam onto Mirror 5 through Mirror 4. Mirror 5 reflects the beam onto the SOS senor. The sensor tells the print controller that a scan has started.

Figure

Motor Assy Main: Genera

Gear Assy Drive: TransmAssy MCRU, a

Sensor Assy CRU: The CRof the


O 53

CR

ts of Drive & Electrophotographics

RU Side View and Shutterperating Principles Overview

U (Electro-Photography):The CRU is composed of six major components.

Drum:An aluminum cylinder with a coating of photoconductive material on the surface. The photoconductive property of the drum allows the drum surface to hold an electrical charge while in darkness, and discharge it when exposed to the light.Bias Charge Roll (BCR):Places a uniform electrical charge on the drum surface. At the end of a print cycle, the BCR applies an AC voltage to the drum surface to neutralize any electrical patterns remaining from the last print cycle.Magnet Roll:Distributes toner to the drum surface.Charge Metal Blade (CM Blade):Spreads an even coating of toner on the Magnet Roll, and gives the Roll a staticelectric charge.Cleaning Blade:Removes any residual toner left on the drum from the last print cycle.Drum Shutter:When the CRU is in place in the printer and the Front Cover is closed, the Drum Shutter opens to expose the area of the drum surface that comes into contact with the paper during a print cycle. When the CRU is out of the printer or when the Front Cover is open, the drum shutter closes to protect the drum surface from light shock and contamination.

Figure 2-22. Componen

Figure 2-23. C


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FR

PW

Faperating Principles Overview

AME & SIZE SENSOR

BA Size 1: Connective PWBA between the PWBA HKB MCU, PWBA Feeder and the PWBA Size Option. This receives and sends the signals, information data, and electric power. The Switch Size is mounted on this PWBA, which detects the paper size loaded in the Cassette through the configuration of the Cam SW actuated by the Actuator CST of the Cassette Assy.

n Assy: Moves air through the printer interior to prevent heat buildup.

Figure 2-24. Components of Frame & Size Sensor


O 55

2.Ththrmaprion

2.1

e Controller

mponents of C305MAIN Board

Function

) CPU controls the main controller and is driven by 64 bit interior clock 166.7MHz.

1 chip type, using SDRAM, correspond to 3.3V/5VMemory Access (RAM/ROM)DMA control (video, I/O)Panel and host interface controlProduce video dataPGI-RIT-Engine interfaceEIC

4MB, 16Mbit Mask ROM (x 2) for Font

Code (4MB)Local language and Expansion (1/4/8MB, Flash)

)

8MB, 64Mbit(x 2) for standard, up to 256MB for expassion Various buffers

128Kbit, Serial Type, for printer establishment memory

Clock Driver for master clock and network clock

) Reset IC for resetting sat power on

Transceiver IC for parallel I/F

Network EEPROM

Transceiver IC for serial I/Fperating Principles Overview

1.5 Main Control Circuite video data sent from the host computer is input to the controller circuit ough either interface circuit or network board. The C305MAIN, which is the in control circuit of this printer, generates video signal by converting the nting data from the host computer into raster data. The video signals turn /off the laser diode on the printhead to form latent images on the drum.

.5.1 Functions of the ControllerCommunication between the host computer and network.

Processing the printing data (analyzing the command and generating video signal).

Sending the video signal to ROS Assembly.

Monitoring the control panel.

Memory Management

Data Buffer

2.1.5.2 Specification of th

Table 2-1. Main Co

Component Name (Location)

CPUVR4310 (PD30210

(IC5)

ASICVR32 (E05B57EB)

(IC11)

Memory

IPL, FONT ROM(IC3, 4)

ROM DIMM(CN1/CN2/CN3)

SDRAM (IC15, 16 & CN12

EEPROM (IC9)

Others

SSCG (IC7)

M51953BFP (IC10

74LVX161284(IC13)

EEPROM_93C(IC405)

202CBN (IC14)

EP

SO

N E

PL-

N20

50R

evis

ion

B

Op

erat

ing

Pri

nci

ple

sO

verv

iew

56Fig

ure

2-2

5. C

ircu

it B

lock

Dia

gra

m o

f C

305M

AIN

Bo

ard

CN

3

CN

8C

N9

CN

7C

N6

CN

10C

N11

2 0 2 C B N

1 6 p i n

( I C 1 4 )

7 4 L V X 1 6 1 2 8 4

A M T D

4 8 p i n * 1

( I C 1 3 )

P a r a l l e l

3 6 p i n

S e r i a l

2 5 p i n

VR

3235

2pin

BG

A(3

.3V

/5V

)E0

5B57

EB

(IC11

)

R E S E T

( I C 1 0 )

V i d e o C L K

3 5 . 2 5 4 5 1 M H z

P a n e l

2 6 p i n

V i d e o

3 6 p i n

I/O

AD

DR

ESS

A[7

:0]

S e r i a l

E E P R O M

A T 2 5 1 2 8

( I C 9 )

T y p e B 0

3 6 p i n

S C S I

3 0 p i n

S S C G

( I C 7 )

C P U

4 3 1 0 - 1 6 7

1 2 0 p i n ( 3 . 3 V )

( I C 5 )

1 4 . 3 1 8 1 8 M H z

M a s t e r C L K

6 6 . 6 7 M H z

4

I n t e r r u p t

C t r l

S y s C M D

S y s A D

5

3 2

T o S D R A M

CN

4

3 . 3 V

5 V

7 4 L V C H 1 6 6 4 6

5 6 p i n * 2

( I C 1 7 / 1 8 )

CN

12

D R A M D I M M

0 - 2 5 6 M B ( 1 6 8 p i n ) * 1

( 3 . 3 V )

3 2

M D [ 3 1 : 0 ]

S D R A M

6 4 M b i t * 1 6

5 4 p i n

( I C 1 5 / 1 6 )

M A [ 1 3 : 0 ]

S D R A M 1 6 M B ( 3 . 3 V )

C o d e D I M M 4 M B ( 7 2 p i n )

CN

1

3 2

R O M D I M M 0 - 8 M B ( 7 2 p i n ) * 2

CN

2

CN

400

6

1 6

AD

DR

ESS

A [2

5:2]

32bi

t da

ta b

us

AD

DR

ESS

A [5

:2]

8 0 p i n

I P L , F O N T

R O M

4 4 p i n * 2

( I C 3 / 4 )

CN

13

4

1 6

5 0 p i n

I D E

2 4 4

N e t w o r k

8bit

10d

bus

3 2

C H A P T E R

UBLESH3OOTINGTRO


T 58

3.

3.Toyoto frein aft

If yat theso

. Service Flowchart

Procedure

rted problem does exit. codes.rints.int quality problems in the three test prints.echanical or electrical abnormalities that are

usual noise or smell coming from the printer.ntified the problem, go to the next block that is Flowchart.

ter power.ower cord from the wall outlet.er cord from the printer.y Front.

a dark cloth and store it away from strong

ove any foreign matter such as paper clips, aper, paper dust, or toner from the interior of

ith a lint-free cloth, dampened slightly with

llers with a lint-free cloth, dampened slightly e a clean, lint-free cloth to dry the rollers.nner window with a soft, dry, lint-free cloth.lean the BTR.R with your fingersR with a brush or a damp cloth.pect the interior of the printer for damaged tion, toner leakage, and worn or damaged part.excessivly dirty or obviously damaged, replace

ished cleaning the printer, go to the next block ervice Flowchart.roubleshooting Troubleshooting

1 Troubleshooting

1.1 Service Flowchart use the Service Flowchart, start from Block 1 to identify the problem. After u have identified the problem, return to the Service Flowchart and proceed Block 2 where you inspect and clean the printer (a thorough cleaning quently solves many printer problems). You continue down the Flowchart, this manner, always returning to the next block in the Service Flowchart er you have completed the tasks outlined in the current block.

ou choose not to use the Service Flwochart, we recommend that you start the appropriate Fault Isolation Procedure (FIP) Flowchart and proceed from re. In many cases, merely replacing the print cartridge with new one could

lve the printer problems.

Table 3-1

Block

1

Identify the Problem1. Verify that the repo2. Check for any error3. Execute three test p4. Take note of any pr5. Take note of any m

present.6. Take note of any un7. When you have ide

listed in the Service

2

Clean the Printer1. Switch OFF the prin2. Disconnect the AC p3. Disconnect the pow4. Open the Cover Ass5. Remove the CRU.

Cover the CRU withlight.

6. Inspect for and remstaples, scraps of pthe printer.

7. Clean the interior wcold water.

8. Clean the rubber rowith cold water. Us

9. Clean the Laser Sca10.Use canned air to c

Do not touch the BTDo not clean the BT

11.While cleaning, inswires, loose connec

12.If the CRU appears it with a new one.

13.When you nave finthat is listed in the S


T 59

Broubleshooting Troubleshooting

Table 3-2. Service Flowchart (Continued)

lock Procedure

3

Final Checkout1. Reinstall all of the covers that you removed while servicing the

printer.2. Check that the original error code is gone and there are no new error

codes displayed.3. Execute a series of test prints.

The printer generates the test prints without jamming and without any print image defects.

4. Take note of any mechanical or electrical abnormalities that are present.The printer runs through the entire print cycle without any obvious problems.

5. Take note of any unusual noise or smell coming from the printer.During the print cycle there are no unusual noises or smells coming from the printer.

6. The call is completed.Clean up your work area, and return the printer to the customer.


T 60

3.If yNo

3.1

1.

2.

3.

4.

5.

e FIP

instructs you to perform a certain action or

y a question.

tion is Yes, then follow the instructions for a

tion is No, then follow the instructions for a

ltage readings at certain test points within the

information on signal names and test point

a printer component.isassembly provides you detailed d re

EPL N2050 Service Manual Rev b

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