Epson C82 Service Manual

®

SERVICE MANUAL

Color Inkjet Printer

EPSON Stylus C82

SEIJ02003

Notice

 All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical,

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

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

 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.

 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.

Copyright © 2002 SEIKO EPSON CORPORATION.

Imaging & Information Product Division
TPCS Quality Assurance Department

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

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

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

4. WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE TO WEAR GLOVES TO AVOID INJURIER FROM METAL PARTS WITH SHARP EDGES.

WARNING

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

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

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

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

5. DO NOT REPLACE IMPERFECTLY FUNCTIONING COMPONENTS WITH COMPONENTS WHICH ARE NOT MANUFACTURED BY EPSON. IF SECOND SOURCE IC OR
OTHER COMPONENTS WHICH HAVE NOT BEEN APPROVED ARE USED, THEY COULD CAUSE DAMAGE TO THE EPSON PRODUCT, OR COULD VOID THE
WARRANTY OFFERED BY EPSON.

About This Manual

This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. The instructions and
procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page.

Manual Configuration

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

Describes the step-by-step procedures for the troubleshooting.

CHAPTER 4. DISASSEMBLY / ASSEMBLY

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

CHAPTER 5. ADJUSTMENT

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.

APPENDIX Provides the following additional information for

reference:

• Connector pin assignments

• 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 NOTE, CAUTION, or WARNING messages.

A D J U S T M E N T

R E Q U I R E D

C A U T I O N

C H E C K

P O I N T

W A R N I N G

Indicates an operating or maintenance procedure, practice or
condition that is necessary to keep the product’s quality.

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.

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

Indicates that a particular task must be carried out according to a
certain standard after disassembly and before re-assembly,
otherwise the quality of the components in question may be
adversely affected.

Revision Status

Revision Issued Date Description

A July 31, 2002 First Release

CONTENTS

Chapter 1 PRODUCT DESCRIPTION

1.1 Features ............................................................................................................... 9

1.2 Specifications ....................................................................................................... 9

1.2.1 Physical Specification ..................................................................................

1.2.2 Printing Specification .................................................................................. 9

1.2.3 Paper Feeding ............................................................................................ 10

1.2.4 Input Data Buffer ....................................................................................... 10

1.2.5 Electric Specification ................................................................................. 10

1.2.6 Environmental Condition ........................................................................... 11

1.2.7 Reliability .................................................................................................. 11

1.2.8 Safety Approvals ....................................................................................... 11

1.2.9 Acoustic Noise ........................................................................................... 11

1.2.10 CE Marking ............................................................................................. 11

1.3 Operator Controls ............................................................................................ 12

1.3.1 Operate Switch ........................................................................................... 12

1.3.2 Control Panel ............................................................................................. 12

1.3.2.1 Switches ............................................................................................. 12

1.3.2.2 Indicators ........................................................................................... 12

1.3.3 Panel Functions .......................................................................................... 12

1.3.4 Printer Condition and Panel Status ............................................................ 13

1.3.5 Errors ......................................................................................................... 13

1.4 Paper .................................................................................................................. 13

1.4.1 Paper Handling .......................................................................................... 13

1.4.2 Paper Specification .................................................................................... 13

1.4.3 Printing Area .............................................................................................. 14

1.4.3.1 Cut Sheet ........................................................................................... 14

1.4.3.2 Envelopes .......................................................................................... 15

1.5 Ink Cartridge .................................................................................................... 15

1.5.1 Black Ink Cartridge .................................................................................... 15

1.5.2 Color Ink Cartridge .................................................................................... 15

Chapter 2 OPERATING PRINCIPLES

2.1 Overview ............................................................................................................ 17

2.1.1 Printer Mechanism ..................................................................................... 17

9

2.1.2 Carriage Motor Specification .................................................................... 17

2.1.3 Paper Feeding Motor Specification ........................................................... 17

2.1.4 Paper Loading Mechanism (New ASF unit) ............................................. 17

2.1.4.1 Drive Process ..................................................................................... 17

2.1.5 Ink System Mechanism ............................................................................. 18

2.1.5.1 Pump Unit & Wiper mechanism ....................................................... 18

2.2 Electrical Circuit Operating Principles .......................................................... 18

2.2.1 C486 PSB/PSE Board ................................................................................ 18

2.2.2 C486 MAIN Board .................................................................................... 19

Chapter 3 TROUBLESHOOTING

3.1 Overview ............................................................................................................ 22

3.1.1 Troubleshooting With LED Error Indications ........................................... 22

3.1.1.1 Paper Out/Double Feed Error ............................................................ 22

3.1.1.2 Ink Out ............................................................................................... 22

3.1.1.3 Fatal Error ......................................................................................... 22

3.1.1.4 Paper Supply Faults ........................................................................... 23

3.1.1.5 Dot missing 1 .................................................................................... 23

3.1.1.6 Dot missing 2 .................................................................................... 23

Chapter 4 DISASSEMBLY AND ASSEMBLY

4.1 Overview ............................................................................................................ 25

4.1.1 Precautions ................................................................................................. 25

4.1.2 Tools .......................................................................................................... 25

4.1.3 Screws ........................................................................................................ 25

4.2 Disassembly ....................................................................................................... 26

4.2.1 Housing Removal ...................................................................................... 27

4.2.1.1 Upper Housing Removal ................................................................... 27

4.2.1.2 Panel Housing/C486 PNL Board Removal ....................................... 27

4.2.1.3 Printhead Removal ............................................................................ 28

4.2.1.4 Lower Housing/Printer Mechanism Removal ................................... 29

4.2.2 Board Removal .......................................................................................... 30

4.2.2.1 C486 Main Board Removal ............................................................... 30

4.2.2.2 C486 PSB/PSE Board Removal ........................................................ 32

4.2.3 Printer Mechanism Disassembly ............................................................... 32

4.2.3.1 ASF Unit Removal ............................................................................ 32

4.2.3.2 ASF Unit Disassembly ...................................................................... 33

4.2.3.3 PE Sensor/PE Sensor Holder/PE Lever Removal ............................. 35

4.2.3.4 PF Encoder & PF Encoder Base Removal ........................................ 36

4.2.3.5 Linear Scale Removal ....................................................................... 37

4.2.3.6 CR Guide Shaft/Carriage Unit Removal ........................................... 37

4.2.3.7 Ink System Unit Removal ................................................................. 39

4.2.3.8 CR Motor Removal ........................................................................... 39

4.2.3.9 PF Motor Removal ............................................................................ 40

4.2.3.10 Paper Eject Frame Unit Removal .................................................... 40

4.2.3.11 EJ Roller Unit Removal .................................................................. 41

4.2.3.12 Front Paper Guide Removal ............................................................ 41

4.2.3.13 Upper Paper Guide Removal ........................................................... 42

4.2.3.14 Rear Paper Guide Removal ............................................................. 42

4.2.3.15 PF Roller Unit Removal .................................................................. 42

7.1.2 EEPROM Address Map ............................................................................. 54

7.2 Exploded Diagram ............................................................................................ 57

7.3 Electrical Circuits ............................................................................................. 58

Chapter 5 ADJUSTMENT

5.1 Overview ............................................................................................................ 44

5.1.1 Conditions for Each Adjustment ............................................................... 44

Chapter 6 MAINTENANCE

6.1 Overview ............................................................................................................ 47

6.1.1 Cleaning ..................................................................................................... 47

6.1.2 Service Maintenance .................................................................................. 47

6.1.3 Lubrication ................................................................................................. 48

Chapter 7 APPENDIX

7.1 Connector Summary ........................................................................................ 52

7.1.1 Major Component Unit .............................................................................. 52

PRODUCT DESCRIPTION

CHAPTER

1

EPSON Stylus C82 Revision A



1.1 Features

The major features of EPSON Stylus C82 are:



High color print quality



2880 (H) x 1440 (V) dpi printing (Max resolution)



4 color printing (YMCK)



Separate ink cartridge for each color



Built-in auto sheet feeder



Holds 150 cut-sheets (90g/m2)



Holds 15 envelopes



Built-in 2 I/F



Bi-directional parallel I/F (IEEE-1284 level 1 device)

Nozzle configuration



Monochrome 180 nozzles



Color 59 nozzles x 3 (Cyan, Magenta, Yellow)

Paper ejecting direction

NOTE: The #60 for each nozzle is only a space.

Figure 1-1. Nozzle rear view



USB





Windows/Macintosh exclusive



Options

Print direction



Bi-direction with logic seeking



10/100 Base-TX External Print Server : C82378

EpsonNet 802.11b Wireless Ext. Print Server : C12C82396

Print speed & Printable columns

Table 1-1. Character mode

Character pitch Printable columns LQ speed

1.2 Specifications

10CPI (Pica) 80 245CPS

This section covers specifications of the printers.

1.2.1 Physical Specification



Weight : 5.2kg (without the ink cartridges)



Dimension : 470mm (W) x 593mm (D) x 316mm (H)

Horizontal

resolution

180dpi 209.8mm (8.26inch) 1488 291CPS

360dpi (Black) 209.8mm (8.26inch) 2976 245CPS

1.2.2 Printing Specification



Print method



On demand ink jet

PRODUCT DESCRIPTION Features 9

Table 1-2. Raster graphics mode

Printable area Available dot CR speed

EPSON Stylus C82 Revision A

Table 1-2. Raster graphics mode

Horizontal

resolution

360dpi (Color) 209.8mm (8.26inch) 2976 225CPS

720dpi 209.8mm (8.26inch) 5952 245CPS

1440dpi 209.8mm (8.26inch) 11904 190CPS



Control code



ESC/P2 expanded raster graphics code



EPSON Remote command



Typeface



Bit map LQ font: EPSON Courier 10 CPI

Printable area Available dot CR speed

1.2.3 Paper Feeding



Feeding method



Friction feed with ASF



Paper path



Cut-sheet ASF (Top entry Front out)



Feed speed



220.86mm/sec (8.70inch/sec) (Normal, 25.4mm feed)



294.0mm/sec (11.5inch/sec) (Fast, continuous feed)

1.2.4 Input Data Buffer



Input buffer size : 32KB

1.2.5 Electric Specification

[120V version]

Rated voltage : AC 120V
Input voltage range : AC 99 to 132V
Rated frequency range : 50 to 60Hz
Input frequency range : 49.5 to 60.5Hz
Rated current : 0.4A (Max. 1.3A)
Power consumption : Approx. 16W (ISO 10561 Letter Pattern)

Approx. 3.5W in sleep mode
Approx. 0.35W in powered off mode
Energy Star compliant

Insulation resistance : 10M ohms min.

(between AC line and chassis, DC 500V)

Dielectric strength : AC 1000V rms. 1 minute or

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

[220 to 240V version]

Rated voltage : AC 220 to 240V
Input voltage range : AC 198 to 264V
Rated frequency range : 50 to 60Hz
Input frequency range : 49.5 to 60.5Hz
Rated current : 0.2A (Max. 0.7A)
Power consumption : Approx. 15W (ISO10561 Letter Pattern)

Approx. 3.5W in sleep mode
Approx. 0.5W in powered off mode
Energy Star compliant

Insulation resistance : 10M ohms min.

(between AC line and chassis, DC 500V)

Dielectric strength : AC 1500V rms. 1 minute

(between AC line and chassis)

PRODUCT DESCRIPTION Specifications 10

EPSON Stylus C82 Revision A

1.2.6 Environmental Condition

Table 1-3. Environmental Condition

Operating Non-operating

Temperature 10 to 35°C

Humidity

(Without condensation)

Resistance to shock 1G, within 1ms 2G, within 2ms

Resistance to vibration 0.15G 0.50G

20 to 80% RH

(*2)

(*2)

NOTE: (*1) With shipment container

NOTE: (*2) Condition is as following figure

90

80

70

60

Humidity (%)

50

40

30

20

27

10

20

30

Temperature (°C)

Figure 1-2. Temperature/Humidity range

-20 to 40°C

(1 month at 40°C and

120 hours at 60°C)

5 to 85% RH

35

40

(*1)

1.2.7 Reliability

Total print volume : 50,000 pages (A4, Letter) (Black)

20,000 pages (A4, Letter) (Color)

Printhead Life : 3000 million dots/nozzle

1.2.8 Safety Approvals

[120V version]

Safety standards : UL1950

CSA 22.2 No.950

EMI : FCC part 15 subpart B class B

CSA C108.8 class B

[220 to 240V version]

Safety standards :EN60950 (VDE)

EMI : EN55022 (CISPR Pub.22) class B

AS/NZS 3548 class B

1.2.9 Acoustic Noise

Level : Approx. 42dB (A) (According to ISO 7779)

1.2.10 CE Marking

[220 to 240V version]

Low voltage directive 73/23/EEC :EN60950
EMC directive 89/336/EEC : EN55022 class B

EN55024
EN61000-3-2
EN61000-3-3

PRODUCT DESCRIPTION Specifications 11

EPSON Stylus C82 Revision A

1.3 Operator Controls

1.3.1 Operate Switch

Operate switch is located on the control panel.

1.3.2 Control Panel

1.3.2.1 Switches

There are 3 non-lock type push switches, and 3 LEDs.

Paper Out LED

Ink Out LED

Power LED

Paper SW

Ink SW

1.3.3 Panel Functions

Table 1-4. Panel functions

Switch Function

• Loads or ejects the paper.

• When carriage is on the ink check position, move carriage to
next ink check position or cartridge change position.

Paper

print cancel

Ink

Ink

(Pushing for 2 seconds

NOTE: (*1) 3 seconds is required at the user’s manual.

NOTE: (*2) This function is not available in printing status.

• When carriage is on the ink cartridge change position, return
carriage from ink cartridge change position.

• In the condition of “Double feed error”, recovering from error
condition, printing is restarted.

• In the condition of printing, cancel the print job.

• Starts the ink cartridge change sequence.
Move the carriage to cartridge change position.

• When carriage is on the ink change position, return carriage
from ink cartridge change position.

• Starts the cleaning of head.

• In the condition of “Ink low” or “Ink out” or “No ink cartridge”,

*1)

starts the ink cartridge change sequence.

(*2)

1.3.2.2 Indicators

Figure 1-3. Control panel

Power SW

Switch Pressing with power on function

Paper Start status printings.

NOTE: (*) Status printings prints firmware version, ink counter and nozzle

Table 1-5. Panel functions with power on

(*1)

check patterns.

 Power

Lights when the operate switch is “ON”, and AC power is supplied.

 Paper Out

Lights during the paper-out condition, and blinks during the paper-jam condition.

NOTE: The Stylus C82 cannot cancel a maintenance error from the control

panel. When a maintenance error is generated, use the Adjustment
Program to clear the counter value.

 Ink Out

Lights during no ink condition, and blinks during the ink low condition.

PRODUCT DESCRIPTION Operator Controls 12

EPSON Stylus C82 Revision A

Paper jam

1.3.4 Printer Condition and Panel Status



When printer fails to eject a sheet, it goes paper jam error.

Table 1-6. Printer condition and LED status

Printer status

Indicators

Priority

Power Ink out Paper out

Maintenance request



When the total quantity of ink wasted through the cleanings and flushing is
reaches to the limit, printer indicates this error and stops.

 Fatal errors

Power on condition On - - 11

Ink sequence Blink - - 7

Ink cartridge change mode Blink - - 6

At occurrence of a Carriage Control Error, CG Access Error or Head Hot Error, a
Fatal Error is generated in order to allow recovery of dot-missing the next time
power is turned on.

 Double feed error

Data processing Blink - - 9

Paper out - - On 5

When printer fails to load a sheet, it goes double feed error.

Double feed error - - On 5

Paper jam condition - - Blink 4

No ink cartridge/Ink out - On - 8

Ink level low - Blink - 10

Enter EEPROM and Timer
IC reset

Maintenance request Fast blink Fast blink Fast blink 3

Fatal error Blink On Blink 2

Power off Blink Blink Blink 1

- On On -

NOTE: (-) Don’t care.

NOTE: Error messages for the printer driver are classified as "Paper out error"

and "Double feed error."

1.3.5 Errors

 No ink cartridge/Ink out

Ink low : Blink
Ink out : On

 Paper out

When printer fails to load a sheet, it goes paper out error.

1.4 Paper

1.4.1 Paper Handling

Reverse feed of more than 9.5mm (0.38") is not allowed.

1.4.2 Paper Specification

Cut sheet



Table 1-7. Paper specification (Cut sheet)

Paper size Paper width Paper length Thickness Weight (lb) Quality

A4 210mm 297mm

Letter 215.9mm 279.4mm

B5 182mm 257mm

Legal 215.9mm 355.6mm

Executive 184.2mm 266.7mm

Half-letter 139.7mm 215.9mm

A5 148mm 210mm

Photo paper 101.6mm 152.4mm

0.08 to

0.11mm

64 to 90g/m

(17 to 24)

• Exclusive

2

paper

• Bond paper

•PPC

PRODUCT DESCRIPTION Paper 13

EPSON Stylus C82 Revision A

Envelope



Table 1-8. Paper specification (Envelope)

Paper size Paper width Paper length Thickness Weight (lb) Quality

No.10 241mm 104.8mm

DL 220mm 110mm

C6 162mm 114mm

0.16 to

0.52mm

45 to 75g/m

(12 to 20)

• Bond paper

2

• Plain paper

• Air mail

1.4.3 Printing Area

1.4.3.1 Cut Sheet

Table 1-11. Character mode

LM

Paper size

A4 3mm (0.12”) 3mm (0.12”) 3mm (0.12”) 14mm (0.54”)

(Left margin)

(min.)

RM

(Right margin)

(min.)

TM

(Top margin)

(min.)

(Bottom margin)

BM

(min.)

NOTE: Envelope printing is only available at normal temperature.

NOTE: Keep the longer side of the envelope horizontally at setting.

Index card



Table 1-9. Paper Specification (Index card)

Paper size Paper width Paper length Thickness

A6 Index card 105mm 148mm

5 x 8" Index card 127mm 203mm

10 x 8" Index card 254mm 203mm

Post cards (Card)



Less than 0.23mm

Table 1-10. Paper Specification (Post cards)

Paper size Paper width Paper length

Post card 100mm 148mm

Return post card 200mm 148mm

Letter 3mm (0.12”) 9mm (0.35”) 3mm (0.12”) 14mm (0.54”)

B5 3mm (0.12”) 3mm (0.12”) 3mm (0.12”) 14mm (0.54”)

Legal 3mm (0.12”) 9mm (0.35”) 3mm (0.12”) 14mm (0.54”)

Statement 3mm (0.12”) 3mm (0.12”) 3mm (0.12”) 14mm (0.54”)

Exclusive 3mm (0.12”) 3mm (0.12”) 3mm (0.12”) 14mm (0.54”)

Table 1-12. Raster graphics mode

LM

Paper size

A4 3mm (0.12”) 3mm (0.12”) 3mm (0.12”)

Letter 3mm (0.12”) 3mm (0.12”) 3mm (0.12”)

B5 3mm (0.12”) 3mm (0.12”) 3mm (0.12”)

Legal 3mm (0.12”) 3mm (0.12”) 3mm (0.12”)

Statement 3mm (0.12”) 3mm (0.12”) 3mm (0.12”)

(Left margin)

(min.)

RM

(Right margin)

(min.)

TM

(Top margin)

(min.)

BM

(Bottom margin)

(min.)

14mm (0.54”) /
3mm (0.12”)

14mm (0.54”) /
3mm (0.12”)

14mm (0.54”) /
3mm (0.12”)

14mm (0.54”) /
3mm (0.12”)

14mm (0.54”) /
3mm (0.12”)

(*)

(*)

(*)

(*)

(*)

Executive 3mm (0.12”) 3mm (0.12”) 3mm (0.12”)

14mm (0.54”) /
3mm (0.12”)

(*)

NOTE: (*) Bottom margin is expanded to 3mm when paper dimension is

defined by using command, otherwise it is not expanded (14mm).

NOTE: From a form lower end 3mm as for 14mm area a printing may scramble.

PRODUCT DESCRIPTION Paper 14

EPSON Stylus C82 Revision A

1.4.3.2 Envelopes

Table 1-13. Envelope margin

LM

Paper size

No.10 3mm (0.12”) 20mm (0.78”) 3mm (0.12”) 3mm (0.12”)

DL 3mm (0.12”) 20mm (0.78”) 3mm (0.12”) 3mm (0.12”)

C6 3mm (0.12”) 20mm (0.78”) 3mm (0.12”) 3mm (0.12”)

(Left margin)

(min.)

NOTE: Keep the shorter side of the envelope horizontally at setting.

RM

(Right margin)

(min.)

TM

(Top margin)

(min.)

BM

(Bottom margin)

(min.)

1.5 Ink Cartridge

1.5.1 Black Ink Cartridge

Bk : Completely compatible between Stylus C80/C70.

Type : Exclusive cartridge
Color : Black
Print capacity : 1240 pages/A4 (ISO/IEC 10561 Letter Pattern at 360dpi)
Ink life :2 years from production data.
Storage temperature :-20

Dimension : 22.0mm (W) x 71.2mm (D) x 66.5mm (H)

o

C to 40oC (Storage, within a month at 40oC)

o

-30

C to 40oC (Packing storage, within a month at 40oC)

o

-30

C to 60oC (Transit, within 120 hours at 60oC

and within a month at 40

o

C)

Storage temperature :-20

o

C to 40oC (Storage, within a month at 40oC)

o

-30

C to 40oC (Packing storage, within a month at 40oC)

o

-30

C to 60oC (Transit, within 120 hours at 60oC

and within a month at 40

o

C)

Dimension : 12.7mm (W) x 71.2mm (D) x 66.5mm (H)

NOTE: Ink cartridges cannot be refilled. Only new cartridges are prepared for

use. To prevent ink leakage, be sure not to peel off blue label attached to
side of cartridge.

NOTE: Do not use the ink cartridge which was passed away the ink life.

NOTE: Ink will be frozen under -4

o

C environment, however it will be usable after

placing it more than 3 hours at room temperature.

1.5.2 Color Ink Cartridge

CMY : Not compatible between Stylus C80/C70.
Type : Exclusive cartridge
Color : Magenta, Cyan, Yellow
Print capacity :420 pages / A4 (360 dpi, 5% duty each color)
Ink life :2 years from production date

PRODUCT DESCRIPTION Ink Cartridge 15

OPERATING PRINCIPLES

CHAPTER

2

EPSON Stylus C82 Revision A

2.1 Overview

This section describes the operating principles of the printer mechanism and electrical
circuit boards

2.1.1 Printer Mechanism



The basic component of the printer mechanism is same the Stylus C80/C70.



Only the ASF is newly designed.



For throughput improvement, the special use Flashing Box utilizes 0/80 digit bi­direction.



Paper can be supplied by 0/80 digit bi-direction. (Economy printing only.)

2.1.2 Carriage Motor Specification

Table 2-1. CR motor Specification

Items Specifications

Type DC motor with brushes

Drive voltage +42V ± 5% (voltage applied to driver)

Coil resistance 27.1Ω ± 10% (per phase at 25 degree)

Inductance

Drive method PWM, constant-current chopping

Driver IC LB11947

19.8mH ± 25% (1KH 1VmA)

2.1.4 Paper Loading Mechanism (New ASF unit)

The ASF of this printer is newly designed. It has the following characteristics.

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Uses a Retard Roller. (Laser printers also use this roller.)

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New design of PF/ASF change mechanism. (Operating principle same as
previous.)

2.1.4.1 Drive Process

1. The motion of the PF Motor is always transmitted to the Combination Gear
Ratchet 65.6 but not transmitted to the LD Roller.

2. After receiving the paper feed command, the Carriage Unit contacts the A or B
ASF Trigger Lever.

3. At this point, the Change Lever extends in the direction of arrow C, locking the
Clutch mechanism.

4. The motion of Combination Gear Ratchet 65.6 is transferred to Clutch Gear 1.

5. LD Roller Gear 2 rotates one time (LD Roller rotates once), and then the LD
Roller is stopped by the Clutch Gear again contacting the Change Lever.

ASF trigger lever

B

A

Change lever

2.1.3 Paper Feeding Motor Specification

Table 2-2. PF motor Specification

Items Specifications

Type DC motor with brushes

Drive voltage +42V ± 5% (voltage applied to driver)

Coil resistance 22.3Ω ± 25% (per phase at 25 degree)

Inductance 17.3mH ± 25% (1KH 1VmA)

Drive method PWM

Driver IC LB11947

C

LD roller

Retard roller

Combination gear ratchet 65.6

Figure 2-1. Drive Process

2

1

OPERATING PRINCIPLES Overview 17

EPSON Stylus C82 Revision A

2.1.5 Ink System Mechanism

With this printer, when the PF Motor turns, power is always transmitted to the ink
system.

2.1.5.1 Pump Unit & Wiper mechanism

Table 2-3. PF motor rotational direction & Ink system mechanism

Directions Functions

Counterclockwise

Clockwise

(*1)

(*1)

(*1): The PF Motor rotational direction = seen from the left side of the printer.

•Set wiper.

•Draw ink.

• Set CR lock lever.

• Reset wiper.

•Release pump.

• Reset CR lock lever.

2.2 Electrical Circuit Operating Principles

The electric circuit of the Stylus C82 consists of the following boards.

Main board : C486 MAIN Board

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Power supply board : C486 PSB/PSE Board

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Panel board : C486 PNL Board

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This section provides Block diagram of both C486 MAIN Board and C486 PSB/PSE
Board.

2.2.1 C486 PSB/PSE Board

+42VDC

F51

Over Current

Protection

D51

+5VDC

ZD52, 87

Q91, ZD51

+42VDC Line

Constant Control

C51

Smoothing

Circuit

TRANS(T1)

Smoothing

Circuit

ZD53

+5VDC Line
Over Voltage

Limitation

+42VDC Line

Over Voltage

Limitation

Q1C11

Main Switching

Circuit

ZD90

C84, Q84

Power Drop

Delay Circuit

PSC Signal from

Main board

+42VDC Line

Drop Limitation

PC1,
PC2

Q2, Q31

Abnormal Feed

Photo

Coupler

back circuit

AC Input

Over Curren t

Protection

Filter Circuit

Full Wave

Rectifier circuit

DB1L1, C1F1, TH1

Figure 2-2. C486 PSB/PSE Board Block Diagram

OPERATING PRINCIPLES Electrical Circuit Operating Principles 18

EPSON Stylus C82 Revision A

2.2.2 C486 MAIN Board

Table 2-4. C486 MAIN Board Major Components and Primary Functions

IC Location Function

ROM IC1

Transceiver IC3

Reset regulator IC4

D-RAM IC5

EEPROM IC6 1 kbit capacity for default setting or adjusted value.

Motor Driver IC8

Head Driver 1 IC9 For creating trapezoidal waveform, 5V drive

ASIC IC10

Head Driver 2 Q2, Q3 Based on IC9 control, trapezoidal waveform creates, 42V drive

8 Mbit ROM program for CPU provided with CG table, 3.3V
drive (not DOS compliant)

Transceiver IC for the Centronics I/F response to IEEE1284 and
ECP more, Data transfer by DMA, 3.3V drive

Formed reset signals shown below.

1. Dropping 42V line to 36.3V, 2. Dropping 5V line to 4.2V

4 Mbit RAM 2-CAS type, 16 bit bus, 5V and 3.3V drive provide
page access functions.

For driving both CR and PF motors, PWM control by program
timer, 5V regulation, 42V drive

CPU (equivalent of H8S/2323), Internal 8Kbit RAM, Internal
MASK ROM, 24MHz, 3.3Vdrive

OPERATING PRINCIPLES Electrical Circuit Operating Principles 19