Epson STYLUS COLOR 480 Service Manual

SERVICE MANUAL

Color Inkjet Printer

EPSON STYLUS COLOR 480

SEIJ00002

Notice

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

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

greatly appreciate being informed of them.

o The contents of this manual are subject to change witho ut notice. o All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would

greatly appreciate being informed of them.

o The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences

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 trademarks or registered trademarks of their

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

PRECAUTIONS

Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment. DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing

procedures preceded by DANGER Headings.

WARNING Signals a precaution which, if ignored, could result in damage to equipment. The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.

DANGER

1. ALWAYS DISCO NNECT 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.

About This Manual

This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of EPSON Stylus Photo 720 / Stylus Photo EX3. The instructions and procedures includ ed herein are intended for t he experienced repair te chni cians, and attention should be given to the preca uti ons on the preceding page.

Contents

This manual consists of six chapters and Appendix.

CHAPTER 1.PRODUCT DESCRIPTIONS

Provides a general overview and specifications of the 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 the troubleshooting.

CHAPTER 4.DISASSEMBLY AND ASSEMBLY

Describes the step-by-step procedures for dissaembling and assembling the product.

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 servicing the product.

APPENDIXProvides the following additional information for

reference:

• Connector pin assignments

• Electric circuit boards components layout

• Exploded diagram

• Electrical circuit boards schematics

Symbols Used in This Manual

Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Be aware of all symbols when they are used, and always read WARNING, CAUTION or NOTE messages.

W ARNING

CAUTION

CHECK

POINT

Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in injury or loss of life.

Indicates an operating or maintenance procedure, practice, or condition that, if not strictly observed, could result in damage to, or destruction of, equipment.

May indicate an operating or maintenance procedure, 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 results achieved through a previous action.

Revision Status

Revision Issued Date Description

Rev. A May, 11 2000 First Release

Product Description

Overview....................................................................................................... 10

Features.................................................................................................. 10

Basic Specification ....................................... ...... ....... ...... ....... ...... ................ 11

Printing Specification............................................................................... 11

Paper Specification ................................................................................. 12

Printable Area.......... ...... ...... ....... ...... ....... ...... ....... ...... ....... ...................... 15

PG Adjust Lever ...................................................................................... 16

Ink Cartridge............................................................................................ 17

Input Data Buffer ..................................................................................... 18

Electric Specification ............................................................................... 18

Reliability................................................................................................. 18

Safety Approvals ..................................................................................... 18

Acoustic Noise......................................................................................... 18

CE Marking (for 220V - 240V) ................................................................. 19

Environmental Conditions ....................................................................... 19

Interface Specification .................................................................................. 21

IEEE-1284 Parallel I/F (Forward Channel).............................................. 21

IEEE-1284 Parallel I/F (Reverse Channel).............................................. 22

EEE1284.4 Protocol................................................................................ 24

Miscellanea ............................................................................................. 25

Receive Data Buffer Full Operation ..............................................................25

Panel-less control & Status Indication..................................................... 25

Error Indication on Status Monitor 3 ......................................................... ....25

Status Monitor 3 function .............................................................................27

Initialization.............................................................................................. 28

Physical Specification................................................................................... 29

Consumables and Options ........................................................................... 30

Operating Principles

Overview....................................................................................................... 32

Printer Mechanism .................................................................................. 32

Printhead................................................................................................. 33

Printing Process .............................................................................................34

Printing Method .............................................................................................34

Carriage Mechanism ............................................................................... 35

Paper Feeding Mechanism ..................................................................... 36

Paper Loading Mechanism (ASF Unit).................................................... 37

Ink System Mechanism ........................................................................... 40

Pump Unit & Wiper mechanism ....................................................................40

Capping Mechanism ......................................................................................41

Ink Sequence .......................................................................................... 41

Printing model ......................................................................................... 43

Eectrical Circuit Operating Principles........................................................... 44

C367 PSB/PSE board............................................................................. 44

C367MAIN-B Board ........................... ...... ....... ...... ....... ...... ....... ...... ....... . 46

Main elements ................................................................................................46

Printhead Driver Circuit .................................................................................47

PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit .......................................48

CR Motor Driver Circuit ................................................................................ 48

Reset Circuit ..................................................................................................49

EEPROM Control Circuit ..............................................................................49

Sensor Circuit .............................................................................. ...... ............50

Troubleshooting

Overview ...................................................................................................... 52

Unit Level Troubleshooting........................................................................... 56

Disassembly and Assembly

Overview ...................................................................................................... 68

Precautions ............................................................................................. 68

Tools ....................................................................................................... 69

Work Completion Check ......................................................................... 70

Disassembly................................................................................................. 71

Housing removal ......................... ....... ...... ....... ...... ....... ...... ....... ...... ....... . 72

Printhead removal........... ...... ...... ....... ...... ....... ...... .................................. 73

CR motor removal................................................................................... 75

Circuit board removal.............................................................................. 76

Waste drain ink pad unit removal............................................................ 79

PF motor removal.................................................................................... 80

LD Roller removal ................................................................................... 81

HP/PE/IC Sensor removal....................................................................... 84

Ink system unit removal (Cap & Pump unit )........................................... 86

Paper Eject Roller removal ..................................................................... 88

Paper feed roller removal........................................................................ 90

CR unit removal....................................................................................... 92

Disassembling ASF frame unit......... ....... ...... ....... ................................... 95

Adjustment

Overview....................................................................................................... 99

Required Adjustment............................................................................... 99

Adjustment Program feature ................................................................. 100

Adjustment Program Installation Procedure.......................................... 101

Adjustment Program Initial Setting menu.............................................. 102

Sequential Repair Service Program feature............................................... 103

Feature.................................................................................................. 103

Printhead removal ................................................................................. 105

Printhead replacement .......................................................................... 107

Main board replacement........................................................................ 110

CR unit replacement or removal............................................................ 114

CR motor replacement or removal ........................................................ 114

Printer mechanism replacement............................................................ 115

Waste ink pad replacement.................................................................. 115

Individual service adjustment program feature........................................... 116

Get status function ................................................................................ 116

Head cleaning function.......................................................................... 116

Initial ink charge function....................................................................... 116

Protection counter check/reset.............................................................. 116

EEPROM check function....................................................................... 117

Refurbishment for DOA......................................................................... 118

A4 Check pattern................................................................................... 119

EEPROM Address Map ........................................................................ 130

Component Layout........ ....... ...... ...... ....... ...... ....... ...... ....... ...... ....... ...... ...... 133

Exploded Diagram...................................................................................... 135

Parts List .................................................................................................... 140

Electrical Circuits........................................................................................ 143

Maintenance

Overview..................................................................................................... 121

Cleaning................................................................................................ 121

Service Maintenance........... ....... ...... ....... ...... ....... ...... ........................... 122

Lubrication............................................................................................. 123

Appendix

Connector Summary................................................................................... 128

Major Component Unit .......................................................................... 128

PRODUCT DESCRIPTION

CHAPTER

EPSON Stylus COLOR 480 Revision A

1.1 Overview

Stylus Color 480 is developed newly for th e low end pro duct and realize a high qu ali ty graphic printing with the low price.

1.1.1 Features

Major features of this printer are as follows;

o High quality color printing

720dpi (H) x 720 dpi(V) dpi printing.

MACH technology (4 color printing. YMCK)

Micro wave, Super micro wave printing

Multi-Shot & Variable dot printing

o Control panel less

Host computer controls the printer.

o Built in I/F

IEEE-1284 parall el Windows exclusive printer.

o Small, space-saving o Built-in auto sheet feeder

Holds 100 cut-sheets (65g/m2)

Holds 10 envelopes

Holds 10 transparency films

Holds 30 special paper

Figure 1-1. External View

Product Description Overview 10

EPSON Stylus COLOR 480 Revision A

1.2 Basic Specification

1.2.1 Printing Specification

PRINTING METHOD

On demand i nk jet

NOZZLE CONFIGURATION

Black: 48 nozzles x 1 row

o o Color: 45 nozzles x 1 row

15 nozzle is assigned for each 3 colors in the one row. (Cyan, Mag enta, Yellow)

#B48

#Y15

2.2578(32/360")

PRINTING DIRECTION

o Bi-direction with logic s eeking

PRINTING SPEED

o Character mode: Refer to the table below

Table 1-1. Character mode: black only

Character pitch

10CPI LQ 80column 20IPS

Character

Quality

Printable

Columns

o Raster graphics mode: Refer to the table below.

Table 1-2. Printing Speed (Raster Graphics Mode)

Horizontal Resolution

480 dpi 8.26 inch 3968 14.1 IPS B lack mode 360 dpi 8.26 inch 2976 20 IPS -720 dpi 8.26 inch 5952 20 IPS --

Printable

Area

Available Dot CR Speed Notes

CR Speed

#Y1

#C 15

#M 15

#M 1

CHARACTER SPECIFICATION

Character code: None. International character sets is not available. Only following

characters are available.

n ASCII 37 characters + Space code + One Symbol

Alphabet A-Z (Code 41H-5AH)

0.21117 (1/120")

#B1

#C 1

unit: mm

Figure 1-2. Nozzle Configuration (Seen from the Back of the Head)

Number 0-9 (Code 30H-39H) SPACE (Code 20H) Symbol # (Code 23H)

n Typeface

Bit map LQ font: EPSON Courier 10CPI

Product Description Basic Specification 11

EPSON Stylus COLOR 480 Revision A

CONTROL CODE

o ESC/P for Stylus Color 480

EPSON Remote command

PAPER FEED SPECIFICATION

o Feeding Method: Friction feed with ASF o Paper Path: Cut sheet ASF (Top entry - Front out)

Line Interval: Programmable by 1/6 inch or 1/360 inch

o Paper Feed Speed:

271.9ms 10 ms (10.16 mm (2/5 inch) at paper feed)

1.67inch/sec (at continuous paper feed)

1.2.2 Paper Specification

CUT SHEET

Size:

A4 (210 x 297 mm) Letter (216 x 279 mm) B5 (182 x 257 mm) Legal (216 x 356 mm) Statement (139.7mm x 215.9mm) Executive (190.5 x 254 mm)

Thickness (plain paper):

0.08mm to 0.11mm(0.003 to 0.004”)

Weight:

64g/m

to 90g/m2 (17lb to 24lb / 55 to 78 kg)

Paper quality: Exclusive paper, Bond paper, Plain paper, recycled paper

ASF hopper available capacity 100 sheets

CAUTION

n No wrinkled, scuffing, torn or folded paper be used. n No curled paper more than 5mm be used.

Product Description Basic Specification 12

EPSON Stylus COLOR 480 Revision A

TRANSPARENCY, GLOSSY PAPER

Size

A4 (210mm x 297mm) Letter (216mm x 279mm)

Thickness

0.075mm to 0.085mm

Quality Exclusive paper

ASF hopper available capacity 1sheet

NOTE: Transparency printing is available only in the normal temperature

ENVELOPE

Size:

No.10 (241.3 mm x 104.8 mm) DL (220 mm x 110 mm) C6 (162 mm x 114 mm) 4”x 6”(220m m x 132mm)

CAUTION

INDEX CARD

n Use above mentioned paper at normal temperature.

(temperature = 15 to 25%, humidity = 40 to 60% RH)

n No wrinkled, scuffing, torn or folded paper be used. n No curled paper more than 5mm be used. n No paper with glue on flap be used. n No double envelops nor with window envelops be used. n Do not print on the back.

Size A6 Index card (105mm x 148mm) A5 Index card (148mm x 219mm) 5 x 8” Index Card (127mm x 203mm) 10 x 8” Index card (127mm x 203mm )

Thickness Less than 0.23mm

ASF hopper available capacity 30sheets

Thickness

0.16mm to 0.52mm

Weight 45g/m2 to 75g/m2

Quality Bond paper, Plain paper, Air mail

ASF hopper available capacity 10sheets

NOTE: * Envelope printing is available only in the normal temperature.

* Keep the longer side of the envelope horizontally at setting.

Product Description Basic Specification 13

EPSON Stylus COLOR 480 Revision A

SPECIAL PAPER

Paper type: EPSON exclusive paper

Photo Quality Ink Jet Paper A4 (210 x 297 mm) A6 (105 x 148 mm)* B5 (182 x 257mm) Letter (216 x 279 mm) Legal (216 x 356 mm) 5 x 8” (127 x 203 mm)*1 8 x10” (100 x 148 mm)*1

360 dpi Ink Jet Paper A4 (210 x 297 mm) Letter (216 x 279 mm)

Transparencies *2) A4 (210 x 297 mm) Letter (216 x 279 mm)

Photo Quality Glossy Film*2) A4 (210 x 297 mm) A6 (105 x 148 mm)*1 Letter (216 x 279 mm)

NOTE: *1): Set the enclosed loading support sheet as the last sheet in the ASF.

Iron-ON Transfe r Paper A4 (210 x 297 mm) Letter (216 x 279 mm)

Matte Paper A4 (210 x 297 mm) Letter (216 x 279 mm)

High Quality Normal Paper A4 (210 x 297 mm)

*2): Set the plain paper as the last sheet in the ASF.

CAUTION

Use above mentioned paper at normal temperature. (temperature = 15 to 25%, humidity = 40 to 60% RH)

Photo Paper (PP2) A4 (210 x 297 mm) Letter (216 x 279 mm) Photo quality card 2 (100 x 148 mm)*1 Panorama (210 x 594 mm) 4” x 6”(113.6 x 175.4) 100mm x 150mm 200mm x 300mm

Photo Sticker A4 (210 x 297 mm) A6 (105 x 148 mm) 8 “x 10” (100 x 148 mm)*1

Product Description Basic Specification 14

EPSON Stylus COLOR 480 Revision A

1.2.3 Printable Area

CUT SHEET

Refer to the following table. As for the each margin area, refer to the Figure 1-3

Table 1-3. Printable Area for Cut Sheet

Paper Size

A4 210mm 297mm 3mm

Letter 216mm 279mm 3mm

B5 182mm 257mm 3mm

Legal 216mm 356mm 3mm

Statement 139.7mm 215.9mm 3mm

Executive 190.5mm 254mm 3mm

Paper

Width

Paper

Length

LM/RM/TMBK Bottom

Margin(*1)

14 mm or more

than 3 mm

14 mm or more

than 3 mm

14 mm or more

than 3 mm

14 mm or more

than 3 mm

14 mm or more

than 3 mm

14 mm or more

than 3 mm

NOTE: *1): Bottom margin can be set up to 3mm at minimum when the paper

length is designated with “ESC(S” command.) However, the printing quality is not guaranteed in the area ranging from 3mm to 14mm, from the form lower end. When the paper length is not designated, the bottom margin must be wider than 14 mm.

Color Bottom

Margin

(*1,*2)

21mm or more

than 3mm

21mm or more

than 3mm

21mm or more

than 3mm

21mm or more

than 3mm

21mm or more

than 3mm

21mm or more

than 3mm

Printable area

Figure 1-3. Printable Area

*2): Bottom margin for color printing can be set up 3mm at minimum when the paper length is designated with “ESC(S” command.). However, guaranteed print area of color printing is narrow than BK (monochrome)printing. This is due to the each color nozzles is assigned in the one row nozzle s.

Product Description Basic Specification 15

EPSON Stylus COLOR 480 Revision A

ENVELOP (PRINTABLE AREA)

Refer to the following table.

Table 1-4. Printable area for Envelop

Paper Size

#10 241mm 104.8 mm 28mm 3mm

DL 216mm 279mm 7mm 3mm

C6 182mm 257mm 3mm 3mm

Paper

Width

Paper

Length

LM RM/TM

Bottom

Margin(*1

)

14 mm or more than

3 mm

14 mm or more than

3 mm

14 mm or more than

3 mm

Bottom Margin

21mm or

more than

21mm or

more than

21mm or

more than

NOTE: *1): Bottom margin can be set up to 3mm at minimum when the paper

Color

(*1,*2)

3mm

Printable area

Figure 1-4. Printable area for Envelop

1.2.4 PG Adjust Lever

Unlike other products, this printer dose not have the PG (Platen Gap) adjust lever in the printer mechanism. So, the Platen Gap value can not be changed according to the paper thickness.

Product Description Basic Specification 16

EPSON Stylus COLOR 480 Revision A

1.2.5 Ink Cartridge

INK CARTRIDGE (BLACK)

Type: Exclusive cartridge

o o Color: Black o Print capacity: 270 pages/A4 (ISO/IEC 10561 Letter Pattern at 360dpi) o Ink life: 2 years from production date o Storage temperature:

-30°C to 60°C Being transported, within 120 hours at 60

-30°C to 40°C Packing storage, within a month at 40

-20°C to 40°C Mounted on the printer, within a month at 40

o Dimension: 19.8mm (W) x 52.7 mm (D) x 38.5mm (H)

C, within a month at 40°C

COLOR INK CARTRIDGE

Type: Exclusive car tridge

o o Color: Magenta, Cyan, Yellow o Print capacity: 150 pages/A4 (360dpi, 5% duty each color) o Ink life: 2 years from production date o Storage temperature:

-30°C to 60°C Being transported, within 120 hours at 60

-30°C to 40°C Packing storage, within a month at 40

-20°C to 40°C Mounted on the printer, within a month at 40

C, within a month at 40°C

o Dimension: 42.9mm (W) x 52.7 mm (D) x 38.5mm (H)

52.7

51.2

52.7

19.8

38.5

18.3

51.2

42.9

41.4

38.5

Figure 1-6. Color Ink Cartridge

Figure 1-5. Black Ink Cartridge

Product Description Basic Specification 17

EPSON Stylus COLOR 480 Revision A

1.2.6 Input Data Buffer

o Buffer: 16Kbytes

1.2.7 Electric Specification

120V VERSION

Rated voltage: AC 120V

o o Input voltage range: AC 99 -132V o Rated frequency range: 50 - 60Hz o Input frequency range: 49.5-60.5 Hz o Rated current: 0.4A(Max 0.5A) o Power consumption: Approx. 21W (ISO/IEI 10561 Letter pattern)

Approx. 5W in Standby mode Energy star compliant

o Insulation Resistance: 10 M ohms min.

(between AC line and chassis, DC 500V)

o Dielectric Strength: AC 1000 V rms. 1 minute or

AC 1200 V rms 1 second (between AC line and chassis)

o Leak Current: less than 0.25mA(input:100V/50Hz)

less than 0.75mA(input: 138V/60Hz)

o Power consumption: Approx. 21W (ISO/IEI 10561 Letter pattern)

Approx. 5.5W in standby mode Energy star compliant

o Insulation Resistance: 10 M ohms min.

(between AC line and chassis, DC 500V)

o Dielectric Strength: AC 1500 V rms. 1 minute o Leak Current : less than 0.75mA (input: 276V/60Hz)

1.2.8 Reliability

o Total print volume: : 10000 pages (A4.Letter) (except ESP,EIO,EPC)

: 20000 pages (A4, Letter) (ESP, EIO,EPC)

o Printhead Life: 4000 million dots/nozzle

1.2.9 Safety Approvals

120V VERSION

Safeties standards: UL1950 with D3

CSA C22.2 No.950 with D3

o EMI: FCC part15 subpart B class B

CSA C108.8 class B

220V -240V VERSION

220 - 240V VERSION

Rated voltage: AC 220 - 240V

o o Input voltage range: AC 198 -264V o Rated frequency range: 50 - 60Hz o Input frequency range: 49.5-60.5 Hz

Safety standards: EN60950(VDE)

EN55022 (CISPR Pub.22) Class B

o EMI: EN55022 (CISPR Pub.22) Class B

1.2.10 Acoustic Noise

o Level Approx. 45dB(A) (According to ISO 7779)

o Rated current: 0.2A (Max. 0.3A)

Product Description Basic Specification 18

EPSON Stylus COLOR 480 Revision A

1.2.11 CE Marking (for 220V - 240V)

o Low Voltage Directive 73/23/eec : ENN60950 o EMC Directive 89/336/EEC : EN55022 Class B

: EN61000-3-2 : EN610000-3-3 : EN50082-1

IEC801-2 IEC801-3 IEC801 -4

1.2.12 Environmental Conditions

TEMPERATURE

Operating: 10 to 35°C (Refer to Figure 1-7)

o o Non-operating: -20 to 60°C (with shipment container)

1 month at 40 120hours at 60

HUMIDITY

°C

(%)

10 27 35

Figure 1-7. Environmental Condition

RESISTANCE TO SHOCK

Operating: 1 G, within 1ms (operating)

(”C)

tmphumid

Operating: 20 to 80% RH

without condensation, Refer to Figure 1-7

o Non-operating: 2G, within 2ms (with shipment container)

o Non-operating: 5 to 85% RH

without condensation, with shipment container

The environmental condition should be within the range shown in the figure below.

RESISTANCE TO VIBRATION

Operating: 0.15G

o o Non-operating: 0.50G (with shipment container)

Product Description Basic Specification 19

EPSON Stylus COLOR 480 Revision A

CAUTION

n When non-operating, make sure the printhead is capped. n When transporting, make sure the printhead is capped and keep

the ink cartridge mounted on the printer.

n Under the power OFF condition, if the printhead is not capped,

turn ON the printer after installing the ink cartridge, and turn off the printer after the capping has completed.

n If the printer kept under -40

inside the ink cartridge will be frozen. It takes 3 hours at 25 use.

, the ink inside the printhead and

to recover once frozen ink to be ready for

Product Description Basic Specification 20

EPSON Stylus COLOR 480 Revision A

1.3 Interface Specification

This printer has IEEE-1284 parallel interface and USB interface as standard.

1.3.1 IEEE-1284 Parallel I/F (Forward Channel)

Forward channel is the mode to transfer the ordinary printing command to the printer side from the PC side.

Table 1-5. Parallel I/F Specification (F-Channel)

Item Specification

Transmission mode 8bit parallel Synchronization By STROBE pulse supplied from the external Handshaking By BUSY and ACKNLG signal Signal Level TTL level (IEEE-1284-Level 1 device ) Adaptable connector 36 pin 57-3036 0 ( a mphenol) or equivalent

NOTE: I/F cable is recommended to be in minimum length.

The connector pin assignment is des cribed below . For these s i gnals descri bed in the table, use the twist pair wire and connect the return side to the signal GND.

Table 1-6. Connector Pin Assignment and Signals (F-Channel)

Pin No.

1 19 -STROBE PC

Return

GND Pin

Signal

Name

From Function Description

The strobe pulse for the printer to read data. Pulse width requires min. 0.5µs (500ns). High at normal condition. Receives data after shifting Low.

Table 1-6. Connector Pin Assignment and Signals (F-Channel)

Pin No.

11 29 BUSY Printer

12 28 PE Printer A high signal indicates paper-out error.

13 28 SLCT Printer

14 30 -AFXT PC Not used.

31 30 -INIT PC

32 29 -ERROR PC A low signal indicates printer error condition.

18 - Logic H -Printer

35 - +5V Printer

17 -

16, 33 19-30

15, 34 - NC - Not used.

36 30 -SLIN - Not used.

Return

GND Pin

- GND - Signal GND.

Signal

Name

Chassis

GND

From Function Description

A high signal indicates that the printer cannot receive data. The signal becomes high under the condition below;

-Receiving data.

-Error.

-Other I/F receiving data.

Always at high level. Pulled up to +5V via

1.0KΩ resistor.

The printer is initialized by the width of min. 50µs Low pulse input.

Always at high level. Pulled up to +5V via

3.9KΩ resistor. Always at high level. Pulled up to +5V via

1.0KΩ resistor.

- Printer chassis GND.

2-9 20-27 Data1-8 PC

10 28 -ACKNLG Printer

The DATA 1 through DATA8 signals represent data bits 1-8, respectively.

A low signal indicates the printer can accept data. Pulse width is 0.5 (default) or can be set at 2µs.

Product Description Interface Specification 21

EPSON Stylus COLOR 480 Revision A

1.3.2 IEEE-1284 Parallel I/F (Reverse Channel)

Reverse channel is used to transfer the information data from the printer side to the PC side.

Table 1-7. Parallel I/F Specification (R-Channel)

Item Specification

Transmission mode IEEE-1284 nibble mode Synchronization Comply with the IEEE-1284 specification Handshaking Comply with the IEEE-1284 specification Logic Level TTL level (I EEE-1284-Le vel 1 device) Data trans. timing Comply with the IEEE-1284 specification Extensibility request data The printer responds affirmatively when the extensibility request

values are 00H or 04H; 00H: Request Nibble Mode Reverse Channel Transfer. 04H: Request Device ID; Return Data Using Nibble Mode Reverse Channel Transfer

o Device ID

The printer sends following device ID string when it is requested. [00H] [5AH] MFG: EPSON; CMD: ESCPL2, BDC, D4;(*1) MDL: Stylus[SP]COLOR[SP]480; CLS: PRINTER; DES: EPSON[SP]Stylus[SP]COLOR[SP] 480;

(*1): When the D4 mode (IEEE1284.4) is OFF, printer reply as follows. CMD: ESCPL2,BDC

NOTE: [00H] denotes a hexadecimal value of zero.

MDL value depends on the EEPROM setting. Refer to Appendix.

The connector pin assignment is described in the table below. For these signals described in the table, use the twist pair wire and connect the return side to the signal GND.

Table 1-8. Connector Pin Assignment and Signals (F-Channel)

Pin No.

2-9 20-27 Data1-8 PC

10 28 PtrClk Printer Printer clock signal.

11 29

12 28

13 28

14 30 HostBusy PC Host busy signal. 31 30 -INIT PC Not used.

32 29

18 - Logic H Printer Pulled up to +5V via 3.9K ohm resistor. 35 - +5V Printer Pulled up to +5V via 3.3 K ohm resistor. 17 - Chassis - Printer chassis GND.

16, 33

19-30

15, 34 - NC - Not used.

36 30 1284-Active PC 1284 active signal.

Return

GND Pin

1 19 HostClk PC Host clock signal.

- GND - Signal GND

Signal Name From Function Description

The DATA 1 through DATA8 signals represent data bits 1-8 respectively.

PtrBusy/

DataBit-3,7

AckDataReq/

DataBit-2,6

Xflag/DataBit-

1,5

-DataAvail/ DataBit-0,4

Printer

Printer busy signal and reverse channel transfer data bit 3 or 7.

Acknowledge data req uest signal and reverse channel transfer data bit 2 or 6.

X-flag signal and reverse channel transfer data bit 1 or 5.

Data available signal and reverse channel transfer data bit 0 or 4.

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Following lists “Notes” when using the parallel interface.

o “Return GND pin” in the table means twist pair return and is connected to the

signal GND level. For each signal, use the twist pair wire and connect the return side. Also, these cables are shielded wires and it is effective means to connect to each chassis GND in the center machine and printer for electrostatic noise.

o Refer to the timing chart for transmission timing of each signals. o Do not perform data transmission ignoring -ACK or BUSY signals. (Perform the

data transmission after confirming that either -ACK or BUSY signal is Low)

o It is possible to perform the printing test including interface circuit without using

external equipment when 8-bit data signal (2-9 pin) is set to appropriate character code (against GND, Open=”1”, Short=”0”) and connect then forcefully to -ACK and -STRB. However, to perform this, “I/F selection” of EEPROM must be set to “Auto”. Also, IEEE-1284.4 packet mode must be set Off.

The figure below shows the timing chart of the parallel interface.

DATA

/STROBE

BUSY

/ACKNLG

Data byte n Data byte n+1

hold

setup

ready

stb

busy

ack

nbusy

timechart

Figure 1-8. IEEE1284 Timing Chart

Table 1-9. IEEE1284 Timing Chart

Parameter Minimum Maximum

tsetup 500ns --

thold 500ns ---

tstb 500ns ---

tready 0 ---

tbusy 0 ---

tt-out (*1) --- 120ns

tt-in (*2) --- 200ns

treply 0 ---

tack 500ns 10us

tnbusy 0 ---

tnext 0 ---

(1*): Rise and fall time of every output signals. (*2): Rise and fall time of every input signals.

On the above timing chart, T transmission speed below.

Table 1-10. t

Parallel I/F Mode Typical Time

High speed 2 µs

Normal speed 4 µs

rated period is varies depend on the Parallel I/F data

ack

Typical time of T

act

ack

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1.3.3 EEE1284.4 Protocol

The packet protocol described by IEEE1284. 4 standard allows a device to carry on multiple exchanges or conversations which contain data and /or control command with another device at the same time across a single point-to-point link. The protocol is not, however. a device control language. It dose provide basic transport-level flow control and multiplexing services. The multiplexed logical channels are independent of each other and blocking of one has no effect on the others. The protocol operates over IEEE1284.4. Three function modes of IEEE1284.4 protocol, “On”, “Off” and “Auto” are available for Parallel I/F, and the setting is defined based on the data stored in the value in EEPROM address 25<H>.

o On

Communication in IEEE1284.4 packet mode is starte d by receiving a magic s tring (1284.4 synchronous commands). Until a magic string is received, other commands are discarded. In this setting, the printer can not communicate with DOS or Windows 3.X environment.

o Off

Communication is carried out in the conventional mode. A magnetic string (1284.4 synchronous commands) is discarded. And only IEEE1284 nibble protocol is available.

o Auto

Communication is carried out in the conventional mode until a magic string (1284.4 synchronous commands) is received. By receiving a magic string, communication in IEEE1284.4 packet mode is started. If the printer dose not receive a magic string, the printer communicates the PC by IEEE1284 nibble mode.

The factory setting for IEEE1284.4 mode is “ON”. But, after complete the initial ink charge operation, the setting of the EEPROM is set to “AUTO”. The change in this setting will be effective when the power is back on after the initial ink charge operation.

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1.3.4 Miscellanea

1.3.4.1 Receive Data Buffer Full Operation

Generally, hosts abandon data transfer to peripherals when a peripheral is in busy state for dozens of seconds continuously. In order to prevent the long busy status, printer start receive the data every 1 secon d when the reset of the input buf fer become less than several hundreds of byt es. The printer will be in busy state continuously when the input buffer finally gets full. This operation is not IEEE 1284.4 protocol

1.3.5 Panel-less control & Status Indication

On this product, the control panel is not assembled in. So, Printer driver utility (STM39 allows to control the printer operation instead of the Control panel and indicates the printer status include the several errors.

1.3.5.1 Error Indication on Status Monitor 3

Following printer status is displayed in the STM3 (Status monitor 3).

o Ink End/Low Error

When the printer is in the ink end or low condition, the STM3 displays the status. If the “How to” button is clicked, the Ink Cartridge Replacement Utility runs and it reads the ink cartridge replacement procedure step by step.

Figure 1-9. Ink low error indication

Figure 1-10. Ink out error indication

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Paper out Error

When the paper is not loaded correctly from the ASF to the PF roller, this error is displayed on t he STM3.

Fatal Error

When the general error has occurred, this error is displayed on the STM3. For example, circuit damage, motor damage...etc.

Figure 1-11. Paper out error indication

Paper jam error

When the paper is jammed between the PE sensor and the Paper eject roller, this error indication is displayed on the STM3.

Figure 1-12. Paper jam error indication

Figure 1-13. Fatal Error indication

Maintenance Error

When the waste ink counter reaches to the specific counter value, this error is displayed on the STM3.

Figure 1-14. Maintenance Error indication

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EPSON Stylus COLOR 480 Revision A

Communication Error

When the printer can no t communicate with PC, this message is displayed on the STM3.

1.3.5.2 Status Monitor 3 function

STM3 in the Printer driver utility allows to perform the following functions.

o Nozzle Check Pattern printing

The printer prints the nozzle check pattern and the 6 digits code of the firmware version & 6 digits code of the CPU Mask version.

o Head cleaning o Bi-d adjustment patter printing o Print head alignment adjustment o Cancel the Paper out error

When the paper is not loaded correctly, STM3 (status monitor 3) display the

following message and the Paper Error can be canceled by clicking the

Figure 1-15. Communication error indication

“Continue” button in the STM3.

“Paper is not loaded correctly. Reload the paper, then click the “Continue”

button. Click “Cancel” to stop any print jobs.”

o Cancel the Paper jam error

When the paper is jammed, STM3 display the following message and printer attempt to eject the Jammed paper by clicking the “EJECT” button. “Paper is jammed”. Click the “Eject” button to eject any jammed paper. If paper is still jammed inside the printer, click the “Stop” button, open the printer cover and remove the paper. Then close the printer cover and click the “Reset” button. Moreover, if the “Stop” button is clicked, the printing is stopped and the “Reset” button is displayed. If once the “Reset” button is clicked, the printer setting is reset.

o Ink Cartridge Exch ange utility

According to the procedure displayed, I/C can be replaced. In this function, CR moves to the I/C replacement position automatically and turn back to the home position after setting the I/C in the CR unit. This function is always available, not only Ink end or low condition.

o Printer Setup utility

This utility instructs the printer set up procedure (I/C setting procedure) and print the nozzle check patter and head cleaning. Additionally, printhead alignment pattern is printed and allow the user to adjust the bi-d printing alignment.

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1.3.6 Initialization

The printer have 3 types of initialization. The initialization operations executed by each initialization method are described below.

HARDWARE INITIALIZATION

This printer initializes itself when it is turned power on or printer recognized the Reset command (D4 command). On this initialization, following actions are performed.

Initialize printer mechanism

Clear the input data buffer

Clear the print buffer

Set default values

SOFTWARE INITIALIZATION

Initialization command, “ESC@” also initializes the printer. On this initialization, following actions are performed.

Clear the print buffer

Set default values

POWER ON INITIALIZATION EXCEPT I/F

This printer initializes itself when the printer receive the IEEE1284.4 reset command or the Parallel I/F cable is disconnected /connected. On this initialization, following actions are performed.

Initialize printer mechanism

Clears the input data buffer

Clears the print buffer

Sets default values except I/F setting.

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1.4 Physical Specification

DIMENSIONS

Stylus Color 480: 431 mm (W) x 311mm (D) x 271mm (H) (Printing)

(

311mm

271mm

431mm

Figure 1-16. Stylus Color 480 Dimensions

WEIGHT

Stylus Color 480: 3 .0k g (without the ink cartridges)

Product Description Physical Specification 29

EPSON Stylus COLOR 480 Revision A

1.5 Consumables and Options

CONSUMABLE

The consumable for this printer are following;

Table 1-11. Consumables

Classification No. Name

Consumables

S020187 Ink Cartridge (bla ck ) S020193 Ink Cartridge (color)

ENCLOSED PARTS

The following parts are enclosed in the Production.

Table 1-12. Enclosed parts

Enclosed Parts Quantity

User’s manual 1 (paper + CD-ROM)

Driver DISK 1(CD-ROM)\ Black ink cartridge 1 Color Ink cartridge 1

Power Code 1(220-240V version only) *1

NOTE: *1: On the 100-120V versi on p roduct , t h e pow er cable i s so lder ed on t he

PS board directly.

Product Description Consumables and Options 30

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