Epson C82 Service Manual

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SERVICE MANUAL Rosko

Color Inkjet Printer

EPSON Stylus C82

SEIJ02003

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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.

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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.

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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

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

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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

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CHAPTER

PRODUCT DESCRIPTION

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)

NOTE: (*1) With shipment container

NOTE: (*2) Condition is as following figure

Humidity (%)

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

(*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

(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

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

• Plain paper

• Air mail

1.4.3 Printing Area

1.4.3.1 Cut Sheet

Table 1-11. Character mode

Paper size

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

(Left margin)

(min.)

(Right margin)

(min.)

(Top margin)

(min.)

(Bottom margin)

(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

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.)

(Right margin)

(min.)

(Top margin)

(min.)

(Bottom margin)

(min.)

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

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.

(Right margin)

(min.)

(Top margin)

(min.)

(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)

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

-30

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

-30

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

and within a month at 40

Storage temperature :-20

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

-30

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

-30

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

and within a month at 40

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

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

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CHAPTER

OPERATING PRINCIPLES

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.



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



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

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

LD roller

Retard roller

Combination gear ratchet 65.6

Figure 2-1. Drive Process

OPERATING PRINCIPLES Overview 17

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