Epson 830 User Manual

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SERVICE MANUAL

Color Inkjet Printer

EPSON Stylus PHOTO 810/820/830

SEIJ01006

Notice

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

 The contents of this manual are subject to change witho ut 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 identif ic ation purp ose only and may be trademarks or registe red tr ademarks of thei r respec-

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

TPCS Quality Assurance Dept.

2000 SEIKO EPSON CORPORATION.

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.

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. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE; INTRODUCTION OF

SECOND-SOURCE ICs OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.

About This Manual

ADJUSTMENT

REQUIRED

CAUTION

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 fo r 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.

CHAPTER 7.APPENDIX

Provides the following additional information for reference:

• Connector pin assignments

• Electric circuit boards components layout

• Electrical circuit boards schematics

• Exploded diagram & Parts List

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.

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 maintenan ce pr ocedure, practi ce, or condition that, if not strictly observed, could result in damage to, or destruction of, equipment.

CHECK

PO INT

W ARNING

May indicate an operating or maintenance procedure,

practice or condition that is necessar y to accomplish a task efficiently. It may also provid e additional information that is related to a specific subject, or comment on the results achieved through a previous action.

I.ndicates an operating or maintenance procedure, practice or condition that, if not strictly obser ved, could result i n 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 2001/8/23 First Release

Addition of Stylus Photo 830 Page 10, 11: The description in the “1.2.4.3 Exclusive Paper” was added. Page 16 : The description in the “1.2.9 Reliability/1.2. 10 Safety Approvals/1.2.11 Acoustic Noise/1.2.12 CE Marking” was added. Page 21 : The description in the “1.3.2 Parallel Interface Device ID” was added. Page 24 : The description in the “1.4 Panel Control” was added. * Section 2 Page 28 : The description in the “2.1 Overview” was added. Page 29 : The description in the “2.1.2 Printhead” was added. Page 31 : The description in the “2.1.3 Carriage Mechanism” was added. Page 32 : The description in the 2.1.4 Paper Load/Feed Mechanism” was added. Page 42 : The description in the “2.2. Electrical Circuit Operating Principles” was added. Page 43 : The description in the “2.2.1 P/S baord” was added. Page 45, 46 : The description in the “2.2.1.2 C482 PSH board” was added. Page 53-58 : The description in the “2.2.3 C483/C484 Main-B board”/”2.2.3.1 Main

B 2002/9/10

elements”/”2.2.3.2 Printhead Drive Circuit”/”2.2.3.3 PF/CR motor Drive Circuit”/”2.2.3.4 Reset Regulator Circuit”/” 2.2.3. 5 EEPROM Control Circuit” /”2.2.3.6 Sensor Circuit”.2 Printhead Driver Circuit” was amended. * Section 3 Page 60 : The description in the “3.1 Overview” was added. * Section 4 Page 91, 92 : The description in the “4.2 Difference on the Printer Mechanism between SP810/820 and SP820/830” was added. * Section 5 Page 127, 128 : The description in the “5.1 Required Adjustment” was amended. * Section 7 Page 136-138 : The description in the “7.1.1 Major Component Unit” was added. Page 142-145 : The description in the “7.1.2 EEPROM Adress Map” was added. Page 154-158 : The description in the “7.3 Exploded Diagram” was added. Page 160 : The description in the “7.4 Part List” was added.

Page 164, 167 : The diagram in the “7.5 Electrical Circuits” was added.

PRODUCT DESCRIPTION

FEATURES ..................................... ...... ....... ...... ....... ...... ....... ...... ....... ........... 7

SPECIFICATIONS. ....... ...... ...... ....... ...... ......................................................... 8

Physical Specification................................................................................ 8

Printing Specification................................................................................. 8

Paper Feeding........................................................................................... 9

Paper Specification ................................................................................... 9

Printing Area............................................................................................ 12

Ink Cartridge Specification ...................................................................... 13

Electric Specification ............................................................................... 14

Environmental Condition ......................................................................... 15

Reliability................................................................................................. 16

Safety Approvals ..................................................................................... 16

Acoustic Noise......................................................................................... 16

CE Marking.............. ............................................. ................................... 16

INTERFACE................................................................................................. 17

Parallel Interface (Forward Channel) ...................................................... 17

Parallel Interface (Reserve Channel) ...................................................... 20

USB Interface.......................................................................................... 22

Prevention Hosts of Data Transfer Time-out........................................... 22

Interface Selection................................................................................... 22

IEEE1284.4 Protocol............................................................................... 22

PANEL CONTROL ....................................................................................... 24

Indicators (LEDs)..................................................................................... 24

Panel Functions....................................................................................... 24

Printer Condition and Panel Status......................................................... 25

Error Status............................................................................................. 25

Printer Initialization.................................................................................. 26

Operating Principles

Overview ...................................................................................................... 28

Printer Mechanism .................................................................................. 28

Printhead................................................................................................. 29

Carriage Mechanism ............................................................................... 31

Paper Loading/Feeding Mechanism ....................................................... 32

Ink System Mechanism ........................................................................... 37

Ink Sequence .......................................................................................... 40

Electrical Circuit Operating Principles .......................................................... 42

P/S board ................................................................................................ 43

C417/C418 Main/Main-B Board .............................................................. 47

C483/C484 MAIN-B Board...................................................................... 53

Troubleshooting

Overview ...................................................................................................... 60

Troubleshooting with LED Error Indications

and Status Monitor 3 Message............................................................. 61

Unit Level Troubleshooting........................................................................... 66

Disassembly and Assembly

Overview ...................................................................................................... 88

Precautions ............................................................................................. 88

Tools ....................................................................................................... 89

Screws.................................................................................................................. 89

Work Completion Check ......................................................................... 90

Difference on Printer Machanism between

SP810/820 and SP820/830.................................................................. 91

Caution in reassembling to ink leakage problem .................................... 92

Disassembly................................................................................................. 93

Upper housing removal ........................................................................... 94

Printhead removal ................................................................................... 96

CR unit removal....................................................................................... 98

CR motor removal ................................................................................. 101

ASF unit removal................................................................................... 102

PSB/PSE unit removal .......................................................................... 104

Holder shaft unit removal ...................................................................... 107

Circuit board removal ............................................................................ 111

Waste drain ink pad (under the ASF unit) removal ............................... 114

Lower housing removal ......................................................................... 115

Caution regarding Ink system removal, PF roller

unit removal and PF motor removal .......................................... 119

Ink system unit removal

(Cap unit, Pump unit & Waste drain ink pad) ........................................ 120

PF roller unit removal ............................................................................ 123

PF motor removal.................................................................................. 125

Adjustment

Overview..................................................................................................... 127

Required Adjustment............................................................................. 127

Maintenance

Overview..................................................................................................... 130

Cleaning................................................................................................ 130

Service Maintenance........... ....... ...... ....... ...... ....... ................................. 130

Lubrication............................................................................................. 132

Appendix

Connector Summary................................................................................... 136

Major Component Unit .......................................................................... 136

EEPROM Address Map......................................................................... 139

Component Layout ..................................................................................... 146

Exploded Diagram...................................................................................... 148

Parts List..................................................................................................... 159

Electrical Circuits........................................................................................ 161

PRODUCT DESCRIPTION

CHAPTER

EPSON Stylus PHOTO 810/820/830 Revision B

1.1 FEATURES

The major features of EPSON color inkjet dot matrix printer EPSON Stylus PHOTO 810/820/830 are:



High Color Print Quality



2880 (H) X 720 (V) dpi printing



Six Color Printing (YMCKmc)



Traditional and New Microweave



Built-in Auto Sheet Feeder



Holds 100 cut-sheets (65g/m2)



Holds 10 envelopes



Holds 10 transparency films



Two built-in Interfaces



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



USB



Windows/Macintosh exclusive

* The above “High Color Print Quality/Built-in Auto Sheet Feeder/Two built-in Interface/Windows, Macintoshi exclusive“ is the specification common to all models.

Figure 1-1. Product’s external view

PRODUCT DESCRIPTION FEATURES 7

EPSON Stylus PHOTO 810/820/830 Revision B



1.2 SPECIFICATIONS

This section covers specifications of the printer.

Print Direction



Bi-direction with logic seeking



Print Speed & Printable Columns

1.2.1 Physical Specification



Weight : 3.42 kg (without the ink cartridges)



Dimension

[Stylus Photo 810/820]

Printing : 479.6 mm (W) x 509 mm (D) x 271.8 mm (H)

[Stylus Photo 820/830]

Printing : 477.3 mm (W) x 475.7 mm (D) x 269 mm (H) Storage : 477.3 mm (W) x 258.4 mm (D) x 181.2 mm (H)

1.2.2 Printing Specification



Print Method



On demand i nk jet



Nozzle Configuration



Monochrome 48 nozzles



Color 48 nozzles x 5 (Cyan, Magenta, Yellow, Light Cyan, Light Magenta)

#48 #47

#46

120 dpi

#48

#47

#46

(Common to all models)

#48 #47

#46

Table 1-1. Character mode (Black only)

Character pitch Character quality Pr i ntable colu mn s CR speed

10 CPI LQ 80 238 CPS*

*CPS: Characters/Second

Table 1-2. Raster graphics mode (Stylus Photo 810/820)

Horizontal

resolution

360 dpi

(Normal dot)

360 dpi

(Multi shot 3 dot)

720 dpi 209.8 mm (8.26 inch) 5952 50.80 cm/s (20 IPS*)

1440 dpi 209.8 mm (8.2 6 inc h ) 11904 50.80 cm/s (20 IPS*)

Printable area Available dot CR speed

209.8 mm (8.26 inch) 2976 86.36 cm/s (34.0 IPS*)

209.8 mm (8.26 inch ) 2976 60.452 cm/s (23.8 IPS*)

Table 1-3. Raster graphics mode (Stylus Photo 820/830)

Horizontal

resolution

360 dpi

(Normal dot)

Printable area Available dot CR speed

209.8 mm (8.26 inch) 2976 78.99 cm/s (31.1 IPS*)

(Black

#3 #2

(Cyan

#3 #2

(Light Cyan)

(Magenta

7.902

(112/360inch)

(Light magenta)

#3 #2

(Yellow)

2.2578

(32/360inch)

360 dpi

(Multi shot 3 dot)

720 dpi 209.8 mm (8.26 inch) 5952 48.26 cm/s (19 IPS*)

1440 dpi 209.8 mm (8.2 6 inc h ) 11904 48.26 cm/s (19 IPS*)

* IPS: Inch/Second

209.8 mm (8.26 inch ) 2976 60.45 cm/s (23.8 IPS*)

Figure 1-2. Nozzle configuration

PRODUCT DESCRIPTION SPECIFICATIONS 8

EPSON Stylus PHOTO 810/820/830 Revision B

CAUTION



Control Code



ESC/P Raster command

1.2.4 Paper Specification

1.2.4.1 Plain Paper



EPSON Remote command



Character Tables



None

- ASCII 96 Codes (Code Number 20H-7FH)



International character sets



None



Typeface



Bit map LQ font : EPSON Courier 10 CPI



Input Data Buffer



32 KB

Item

A4 210 297

Letter 215.9 279.4

Legal 215.9 355.6

Executive 184.2 266.7

Half Letter 139.7 215.9

B5 182 257 A5 148 210

Width

(mm)

Table 1-5. Plain paper

Length

(mm)

Thickness

(mm)

0.08-0.11 (17-24(lb))

Weight

(g/m

64-90

)

Quality

Plain paper

Reclaimed paper

1.2.3 Paper Feeding



Feeding Method



Friction feed with ASF



Paper Path



Cut-sheet ASF (Top entry Front out)



Feed Speed

Feed condition Time Speed

10.16 mm (0.4 inch) feed 110 msec 92.36 mm (3.64 inch)/sec Continuous feed 140 msec 139.7 mm (5.5 inch)/sec

Table 1-4. Feed spee d

A6 105 148

User

defined

89-241.3 89-1117.6



Poor quality paper may reduce print quality and cause paper jams or other problems. If you encounter problems, switch to a higher grade of paper.



Do not load curled or folded paper.



Use paper under normal conditions : Temperature 15 to 25

°°°°

to 77

F) Humidity 40 to 60% RH

°°°°

C (59

PRODUCT DESCRIPTION SPECIFICATIONS 9

EPSON Stylus PHOTO 810/820/830 Revision B

1.2.4.2 Envelope

Table 1-6. Envelope

Item

No.10 241.3 104.8

DL 220 110

C6 162 114

Envelope

220*132

Width

(mm)

220 132

* Envelope printing is only available at normal temperature. Keep the longer side of the envelope horizontally at setting.



CAUTION

Poor quality paper may reduce print quality and cause paper jams or other problems. If you encounter problems, switch to a higher grade of paper.



Do not load curled or folded paper.



Use paper under normal conditions : Temperature 15 to 25

°°°°

to 77

F) Humidity 40 to 60% RH

Length

(mm)

Thickness

(mm)

N/A

Weight

)

(g/m

45-75

(12-20(lb))

Quality *

Bond paper

Air mail

PPC

°°°°

C (59

1.2.4.3 Exclusive paper

Quality: EPSON Exclusive paper Transparency printing is only available at normal temperature

Table 1-7. Exclusive paper

Item Size

Photo Quality

Ink Jet Paper

Photo Quality

Ink Jet Card

360dpi Ink Jet Pape r

Premium Luster

Photo Paper

Width

(mm)

A4 210 297

Letter 215.9 279.4

B5 182 257

5*8 127 203.2

A6 105 148 A4 210 297

Letter 215.9 279.4

Letter 215.9 279.4 0.27 250 (66lb)

Length

(mm)

Thickness

(mm)

102 (27lb) *

0.13 102 (27lb)Legal 215.9 355.6

0.21 180 (48lb)8*10 203.2 254

0.11 89 (24lb)

Weight

(g/m

)

Ink Jet Transparencies

Photo Quality

Glossy Film

Matte PaperHeavyweight

A4 210 297

0.13 N/A

Letter 215.9 279.4

A4 210 297

0.13 N/ALetter 215.9 279.4

A6 105 148 A4 210 297

0.23 167(44Ib)

Letter 215.9 279.4

PRODUCT DESCRIPTION SPECIFICATIONS 10

EPSON Stylus PHOTO 810/820/830 Revision B

CAUTION

Table 1-7. Exclusive paper

Item Size

A4 210 297

Letter 215.9 279.4

Photo Paper

Photo Quality Self

Adhesive Sheets

Photo Stickers 16 A6 105 148 0.19 167 (44lb)

Photo Stickers 4 A6 105 148 0.19 167 (44lb)

Iron-On Cool Peel

Transfer Paper

Premium Glossy

Photo Paper

Premium Semigloss

Photo Paper

Card 100 148

Photo Paper

4*6

Panorama 210 594

A4 210 297 0.19 167 (44lb)

A4 210 297

Letter 215.9 279.4

A4 210 297

Letter 215.9 279.4

A4 210 297

Letter 215.9 279.4

Width

(mm)

113.6 175.4

Length

(mm)

Thickness

(mm)

0.23 194 (52lb)

0.18 124 (33lb)

0.27 255 (68lb)

0.27 250 (66lb)

Weight

(g/m



Poor quality paper may reduce print quality and cause paper

)

jams or other problems. If you encounter problems, switch to a higher grade of paper.



Do not load curled or folded paper.



Use paper under normal conditions : Temperature 15 to 25

°°°°

to 77

F) Humidity 40 to 60% RH



EPSON Photo Quality G lossy Film and Self Adhesive Sheets

°°°°

C (59

should be stored under the following conditions : Temperature 15 to 30

°°°°

C (59 to 86

°°°°

F) Humidity 20 to 60% RH

Premium Ink Jet

Plain Paper

Bright White Ink Jet Paper

Color Life Photo Paper

A4 210 297 0.11 80 (21lb)

A4 210 29 7 0.13 92.5 (25lb)

A4 210 297 0.25 245 (65lb)

* 98 (26lb) for EU ** Photo Quality Ink Jet Card (size : Post Card)/Color Life Photo: Stylus Photo 820/830

PRODUCT DESCRIPTION SPECIFICATIONS 11

EPSON Stylus PHOTO 810/820/830 Revision B

1.2.5 Printing Area

1.2.5.1 Cut Sheet

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

Table 1-8. Printing area

Paper size

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

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

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

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

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

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

Left margin

(min.) **

* Bottom margin can be set to 3mm 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 14mm. (Printable area A)

Right margin

(min.) **

Top margin

(min.) **

Black bottom margin

(min.) **

14 mm (0.54”) / 3mm (0.12”) *

Printable area A

Printable area B

** When all margins (Left / Right / Top / Bottom) can be set to 0mm at minimum

only when the “no margin” is checked on the printer driver. However, the

Figure 1-3. Printable area for cut sheet

printing quality is not guaranteed in the area, ranging from 0mm to 3mm, from the form lower end.

PRODUCT DESCRIPTION SPECIFICATIONS 12

EPSON Stylus PHOTO 810/820/830 Revision B

(Rib area)

1.2.5.2 Envelopes

Refer to the following table. As for each margin area, refer to Figure 1-4.

Table 1-9. Envelope margin

Paper size

#10 3 mm (0.12”) 28 mm (1.10”) 3 mm (0.12”) 14 mm (0.55”) DL 3 mm (0.12”) 7 mm (0.28”) 3 mm (0.12”) 14 mm (0.55”)

C6 3 mm (0.12”) 3 mm (0.12”) 3 mm (0.12”) 14 mm (0.55”)

Left margin

(min.)

Right margin

(min.)

Printable area

Top margin

(min.)

Bottom margin

(min.)

1.2.6 Ink Cartridge Specification

1.2.6.1 Black Ink Cartridge



Type : Exclusive Cartridge



Color : Black



Print Capacity : 540 pages/A4

(ISO/IEC 10561 Letter Pattern at 360 dpi)



Ink Life : 2 years from production date



Storage Temperature:



Storage -20 oC to 40 oC (within a month at 40 oC)



Packing -30 oC to 40 oC (within a month at 40 oC)



Transit -30 oC to 60 oC (within 120 hours at 60 oC

and within a month at 40



Dimension : 20.1 mm (W) x 66.85 mm (D) x 38.5 mm (H)

Figure 1-4. Printable area for envelopes

Figure 1-5. Black ink cartridge

PRODUCT DESCRIPTION SPECIFICATIONS 13

EPSON Stylus PHOTO 810/820/830 Revision B

1.2.6.2 Color Ink Cartridge



Type : Exclusive Cartridge



Color : Magenta, Cyan, Yellow, Light Cyan, Light Magenta



Print Capacity : 220 pages / A4 (360 dpi, 5% duty each color)



Ink Life : 2 years from production date



Storage Temperature:



Storage -20 oC to 40 oC (within a month at 40 oC)



Packing -30 oC to 40 oC (within a month at 40 oC)



Transit -30 oC to 60 oC (within 120 hours at 60 oC

and within a month at 40



Dimension : 49.1 mm (W) x 66.85 mm (D) x 38.5 mm (H)

(Rib area)

1.2.7 Electric Specification

[120V Version] (Stylus Photo 810/820)



Rated Voltage : AC120V



Input Voltage Range : AC90∼132V



Rated Frequency Range : 50∼ 60Hz



Input Frequency Range : 49.5∼ 60.5Hz



Rated Current : 0.4A



Power Consumption : Approx. 17W (ISO10561 Letter Pattern)

Approx. 4W in standby mode Energy Star compliant



Insulation Resistance : 100M 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 ∼ 240V Version] (Stylus Photo 810/820)



Rated Voltage : AC220V∼240V



Input Voltage Range : AC198∼264V



Rated Frequency Range : 50∼60Hz



Input Frequency Range : 49.5∼60.5Hz



Rated Current : 0.2 A



Power Consumption : Approx. 17W (ISO10561 Letter Pattern)

Approx. 4.5W in standby mode

(Rib area)

Figure 1-6. Color ink cartridge

Note 1: Ink cartridge can not re-fill, only ink cartridge is prepared for article

of consumption. Note 2: Do not use the ink cartridge which was passed away the ink life. Note 3: Ink will be frozen under -18 ~ -21

usable after placing it more than 3 hours at room temperature.

C environment, however it will be



Insulation Resistance : 100M ohms min.



Dielectric Strength : AC 1500V rms. 1 minute

Energy Star compliant

(between AC line and chassis, DC 500V)

(between AC line and chassis)

PRODUCT DESCRIPTION SPECIFICATIONS 14

EPSON Stylus PHOTO 810/820/830 Revision B

[UPS Version] (Stylus Photo 820/830)



Rated voltage : AC100~240V



Input voltage range : AC99∼264V



Rated frequency range : 50∼ 60Hz



Input frequency range : 49.5∼ 60.5Hz



Rated current : 0.4~0.2A



Power consumption: : Approx. 18W (ISO10561 Letter Pattern) Approx. 4W in standby mode

Approx. 0.6W (Power Off Mode)



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)

1.2.8 Environmental Condition



Temperature



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



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

1 month at 40°C and 120 hours at 60°C



Humidity



Operating : 20 to 80% RH

(without condensation / refer to Figure 1-7)



Non-operating : 5 to 85% RH

(without condensatio n / with shipm ent container)



Resistance to Shock



Operating : 1G, within 1 ms



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



Resistance to Vibration



Operating : 0.15G



Non-operating : 0.50G (with shipment container)

80 70 60

Humidity (%)

50 40 30 20

Temperature (°C)

Figure 1-7. Temperature/Humidity range

PRODUCT DESCRIPTION SPECIFICATIONS 15

EPSON Stylus PHOTO 810/820/830 Revision B

1.2.9 Reliability



Total Print Volume : 16,000 pages (A4, Letter)

or 5 years although less than 16,000 pages printing



Print Head Life : 3 billion dots/nozzle

: 3 billion dots/nozzle or 5 years although less than 3 billion dots/nozzle

(Stylus Photo 810/820)

1.2.10 Safety Approvals

[120V Version] (Stylus Photo 810/820)



Safety Standards : UL1950

CSA22.2 No.950



EMI : FCC part15 subpart B Class B

CSA C108.8 Class B

[220∼240V Version] (Stylus Photo 810/820)



Safety Standards: : EN60950 (VDE)



EMI : EN55022 (CISPR Pub.22) Class B

AS/NZS 3548 Class B

[UPS Version] (Stylus Photo 820/830)

(Stylus Photo 810/820)

1.2.11 Acoustic Noise



Level

(Stylus Photo 810/820)

Level

(Stylus Photo 820/830)

: Approx. 45dB(A) (According to ISO 7779) : Approx. 48dB(A) (According to ISO 7779)

1.2.12 CE Marking

[220∼240V Version]



Low Voltage Directive 73/23/EEC : EN60950



EMC Directive 89/336/EEC : EN55022 Class B

EN61000-3-2 EN61000-3-3 EN50082-1 IEC801-2 IEC801-3 IEC801-4

[UPS Version] (Stylus Photo 820/830)



Low voltage directive 73/23/EEC : EN60950



EMC directive 89/336/EEC : EN55022 Class B

EN61000-3-2 EN61000-3-3 EN55024



Safety standards: : UL1950

CSA C22.2 No.950 : EN 60950 (VDE)



EMI : FCC part 15 subpart B Class B

CSA C108.8 Class B : EN 55022 (CISPR Pub.22) class B : AS/NZS 3548 class B

PRODUCT DESCRIPTION SPECIFICATIONS 16

EPSON Stylus PHOTO 810/820/830 Revision B

1.3 INTERFACE

The EPSON Stylus PHOTO 810/820/830 provides USB and parallel interface as standard.

1.3.1 Parallel Interface (Forward Channel)



Transmission Mode : 8 bit parallel, IEEE-1284 compatibility mode



Synchronization : By STROBE pulse



Handshaking : BY BUSY and ACKNLG signal



Signal Level : TTL compatible level



Adaptable Connector : 57-30360 (amphenol) or equivalent

BUSY signal is set high before setting either -ERROR low or PE high, and held high until all these signals return to their inactive state.

BUSY signal is at high level in the following cases.



During data entry (see data transmission timing)



When input data buffer is full



During -INIT signal is at low level or during hardware initialization



During printer error (see -ERROR signal)



When the parallel interface is not selected

ERROR signal is at low level when the printer is in one of the following states.



Printer hardware error (fatal error)



Paper-out error



Paper-ja m error



Ink-out error



No ink-cartridge

DATA

data byte n

hold

-STROBE

stb

setup

BUSY

ready

busy

-ACKNLG t

nbusy

ack

Figure 1-8. Data transmission timing Table 1-10. Data transmission timing

Parameter Minimum Maximum

tsetup 500ns -

thold 500ns -

tstb 500ns -

tready 0 -

tbusy - 500ns tt-out* - 120ns tt-in** - 200ns

treply 0 -

tack 500ns 10us

tnbusy 0 -

tnext 0 -

data byte n+1



Maintenance request

PE signal is at high level during paper-out error.

* Rise and fall time of every output signals ** Rise and fall time of every input signals *** Typical timing of tack is shown on the following page.

PRODUCT DESCRIPTION INTERFACE 17

EPSON Stylus PHOTO 810/820/830 Revision B

Table 1-11. Typical time of tack

Parallel I/F mode Typical time of tack

High Speed 0.5us

Normal Speed 2us

Table 1-12. Signal level: TTL compatible (IEEE-1284 level 1 device)

Parameter Minimum Maximum Condition

VOH* - 5.5V

VOL* -0.5V -

IOH* - 0.32mA VOH = 2.4V IOL* - 12mA VOL = 0.4V

CO - 50pF

VIH - 2.0V

VIL 0.8V -

IIH - 0.32mA VIH = 2.0V

IIL - 12mA VIL = 0.8V

CI - 50pF

* A low logic level on the Logic H signal is 2.0V or less when the printer

is powered off and this signal is equal or exceeding 3.0V when the printer is powered on. The receiver shall provide an impedance equivalent to 7.5K ohm to ground.

Table 1-13. Connector pin assignment and signals

Pin No. Signal n ame

1 -STROBE 19 In

2 DATA0 20 In 3 DATA1 21 In 4 DATA2 22 In 5 DATA3 23 In 6 DATA4 24 In 7 DATA5 25 In 8 DATA6 26 In 9 DATA7 27 In

10 -ACKNLG 28 Out

11 BUSY 29 Out

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

13 SLCT 28 Out

14 -AFXT 30 In Not used.

Return

GND pin

In/Out Functional description

The strobe pulse. Read-i n of da ta is performed at the falling edge of this pulse.

The DATA0 through DATA7 signals represent data bits 0 to 7, respectively.

Each signal is at high level when data is logical 1 and low level when data is logical 0.

This signal is a nega tive pulse indicating that the printer can accept data ag ai n.

A high signal indicates that the printer cannot receive da ta .

Always at high level when the printer is powered on.

The falling edge of a negative pulse or a

31 -INIT 30 In

32 -ERROR 29 Out

36 -SLIN 30 In Not used. 18 Logic H - Out Pulled up t o +5V via 3.9 K ohm resistor.

low signal on this line causes the printer to initialize. Minimum 50us pulse is necessary.

A low signal indicates printer error condition.

PRODUCT DESCRIPTION INTERFACE 18

EPSON Stylus PHOTO 810/820/830 Revision B

Table 1-13. Connector pin assignment and signals (continued)

Pin No. Signal name

35 +5V - Out Pulled up to +5V via 3.3K ohm resistor. 17 Chassis GND - - Chassis GND.

16,33, 19-30

15,34 NC - - Not connected.

NOTE:

GND - - Signal GND.

In/Out refers to the direction of signal flow from the printer’s point of

Return

GND pin

In/Out Functional description

view.

PRODUCT DESCRIPTION INTERFACE 19

EPSON Stylus PHOTO 810/820/830 Revision B

1.3.2 Parallel Interface (Reserve Channel)



Transmission Mode : IEEE-1284 nibble mode



Adaptable Connector : See forward channel



Synchronization : Refer to the IEEE-1284 specification



Handshaking : Refer to the IEEE-1284 specification



Data Trans. Timing : Refer to the IEEE-1284 specification



Signal Level : IEEE-1284 level 1 device

See forward channel.

Table 1-14. Connector pin assignment and signals

Pin No. Signal name

1 HostClk 19 In Host clock signal . 2 DATA0 20 In 3 DATA1 21 In 4 DATA2 22 In 5 DATA3 23 In 6 DATA4 24 In 7 DATA5 25 In 8 DATA6 26 In 9 DATA7 27 In

Return

GND pin

In/Out Functional des cri p tion

The DATA0 through DATA7 signals represent data bit s 0 to 7, re sp e ct i ve ly .

Each signal is at high level when data is logical 1 and low level when data is logical 0.

These signals are used to transfer the 1284 extensibility request values to the printer.

Table 1-14. Connector pin assignment and signals (continued)

Pin No. Signal name

31 -INIT 30 In Not used.

36 1284-Active 30 In 1284 active signal. 18 Logic-H - Out Pulled up to +5V via 3.9K ohm resistor. 35 +5V - Out Pulled up to +5V via 3.3K ohm resistor. 17 Chassis GND - - Chassis GND.

16,33,

19-30 15,34 NC - - Not connected.

NOTE:

-DataAvail / DataBit-0,4

GND - - Signal GND.

In/Out refers to the direction of signal flow from the printer’s point of view.



Extensibility Request: The printer responds affirmatively when the extensibility request values are 00H

or 04H, that means,

00H : Request nibble mode reverse channel transfer. 04H : Request device ID;

Return data using nibble mode rev channel transfer.

Return

GND pin

29 Out

In/Out Functional description

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

10 PtrClk 28 Out Printer clock signal.

14 HostBusy 30 In Host busy signal.

PtrBusy /

DataBit-3,7

AckDataReq / DataBit-2,6

Xflag /

DataBit-1,5

29 Out

28 Out

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

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

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

PRODUCT DESCRIPTION INTERFACE 20

EPSON Stylus PHOTO 810/820/830 Revision B

Stylus Photo 820/830



Device ID:



Stylus Photo 810/820



The printer sends the following device ID string when it is requested.

When IEEE1284.4 is enabled,

For EAI spec [00H] [5AH] MFG : EPSON; CMD : ESCPL2, BDC, D4; MDL : Stylus[SP]Photo[SP]820; CLS : PRINTER; DES : EPSON[SP]Stylu s[SP]Photo[SP]820; For EURO/ASIA spec [00H] [5AH] MFG : EPSON; CMD : ESCPL2, BDC, D4; MDL : Stylus[SP]Photo[SP]810; CLS : PRINTER; DES : EPSON[SP]Stylu s[SP]Photo[SP]810;

When IEEE1284.4 is disabled,

For EAI spec [00H] [57H] MFG : EPSON; CMD : ESCPL2, BDC; MDL : Stylus[SP]Photo[SP]820; CLS : PRINTER; DES : EPSON[SP]Stylu s[SP]Photo[SP]820; For EURO/ASIA spec [00H] [57H] MFG : EPSON; CMD : ESCPL2, BDC; MDL : Stylus[SP]Photo[SP]810; CLS : PRINTER; DES : EPSON[SP]Stylu s[SP]Photo[SP]810;

When IEEE1284.4 is enabled,

For EAI spec [00H] [5AH] MFG : EPSON; CMD : ESCPL2, BDC, D4; MDL : Stylus[SP]Photo[SP]820; CLS : PRINTER; DES : EPSON[SP]Stylus[SP]Photo[SP]820; For EURO/ASIA spec [00H] [5AH] MFG : EPSON; CMD : ESCPL2, BDC, D4; MDL : Stylus[SP]Photo[SP]830; CLS : PRINTER; DES : EPSON[SP]Stylus[SP]Photo[SP]830;

When IEEE1284.4 is disabled,

For EAI spec [00H] [57H] MFG : EPSON; CMD : ESCPL2, BDC; MDL : Stylus[SP]Photo[SP]820; CLS : PRINTER; DES : EPSON[SP]Stylus[SP]Photo[SP]820; For EURO/ASIA spec [00H] [57H] MFG : EPSON; CMD : ESCPL2, BDC; MDL : Stylus[SP]Photo[SP]830; CLS : PRINTER; DES : EPSON[SP]Stylus[SP]Photo[SP]830;

Note 1: [00H] denotes a hexadecimal value of zero. Note 1: [00H] denotes a hexadecimal value of zero. Note2: MDL value depends on the EEPROM setting. Note3: CMD value depends on the IEEE1284.4 setting.

Note3: CMD value depends on the IEEE1284.4 setting.

Note2: MDL value depends on the EEPROM setting.

PRODUCT DESCRIPTION INTERFACE 21

EPSON Stylus PHOTO 810/820/830 Revision B

1.3.3 USB Interface



Standard : Based on

“Universal Serial Bus Specifications Rev. 1.1” “Universal Serial Bus Device Class Definition for Printing Devices Version 1.1”



Bit Rate : 12Mbps (Full Speed Device)



Data Encoding : NRZI



Adaptable Connector : USB Series B



Recommended Cable Length : 2 meters

Table 1-15. Connector pin assignment and signals

Pin No. Signal name I/O Function description

1 VCC - Cable powe r. Ma x. powe r cons um ption is 2mA. 2 -Data Bi-D Data 3 +Data Bi-D Data, pull up to +3.3V via 1.5K ohm resistor. 4 Ground - Cable ground

Pin #2

Pin #1

1.3.4 Prevention Hosts of Data Transfer Time-out

Generally, hosts abandon data transfer to peripherals when a peripheral is in the busy state for dozens of seconds continuously. To prevent hosts of time-out, the printer receives data very slowly, several bytes per minute, even if the printer is in busy state. This slowdown is starte d when the remaining input buffer beco mes several h undreds of bytes, and the printer is finally in the busy state continuously when the input buffer is full. USB and IEEE1284.4 on the parallel interface do not require this function.

1.3.5 Interface Selection

The printer has two built-in interfaces : the USB and parallel interface. These interfaces are selected automatically.



Automatic Selection In this automatic interface selection mode, the printer is initialized to the idle state scanning which interface receives data when it is powered on. Then the interface which receives data first is selected. When the host stops data transfer and the printer is in the stand-by state for seconds, the printer is returned to the idle state. As long as the host sends data or the printer interface is in busy state, the selected interface is let as it is.



Interface State and Interface Selection When the parallel interface is not selected, the interface gets into the busy state. When the printer is initialized or returned to the idle state, the parallel interface gets into the ready state. Caution that the interrupt signal such as the -INIT signal on the parallel interface is not effective while that interface is not selected.

1.3.6 IEEE1284.4 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 information

Pin #3

Pin #4

Figure 1-9. USB pin Assignment

PRODUCT DESCRIPTION INTERFACE 22

with another device at th e same ti me acros s a si ngle point-t o-point l ink. T he prot ocol i s not, however, a device control language. It provides 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.



Automatic Selection An initial state is compatible interface and starts IEEE1284.4 communication when magic strings (1284.4 synchronous commands) are received.

EPSON Stylus PHOTO 810/820/830 Revision B



On An initial state is IEEE1284.4 communication and data that received it by the time it is able to take s ynchron izatio n by mag ic string (1284 .4 syn chronou s commands) is discarded.



Off An initial state is compatible interface and never starts IEEE1284.4 communication even if magic strings (1284.4 synchronous commands) are received.

PRODUCT DESCRIPTION INTERFACE 23

EPSON Stylus PHOTO 810/820/830 Revision B

1.4 PANEL CONTROL

The control panel of the EPSON Stylus Photo 81/820 is composed of the 2 non-lock type push-buttons (Error reset/Ink cartridge exchange), 1 lock-type push-button (Power), and 2 LEDs. Different from Stylus Photo 810/820, the Stylus Photo 820/830 is compsed of the 3 non-lock type push -button. ( 2 LEDs is the same as the Stylus Photo 810/820.)

Power

(1)

Error reset

(2)

1.4.2 Panel Functions

Table 1-16. Panel functions

Switch Function

• Loads or Ejects the Paper (Pushing within 3seconds).

Error reset SW

Ink cartridge exchange SW

* This function is not available in printing status.

Switch Function

Error reset SW

Ink cartridge

exchange SW

• Starts the Cleaning of head (Pushing for 3seconds).

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

• Starts the Ink Cartridge change sequence . *

Table 1-17. Panel functions with power on

• Start status printings.

• Selects IEEE 1284.4 mode for parallel I/F. *1

Ink cartridge exchange

*1 Not described in the user's manual.

Figure 1-10. Control panel

1.4.1 Indicators (LEDs)

(1) Power (Green)

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

(2) Error (Red)

Lights or blinks when some error has occurred on the printer.

PRODUCT DESCRIPTION PANEL CONTROL 24

EPSON Stylus PHOTO 810/820/830 Revision B

1.4.3 Printer Condition and Panel Status

Table 1-18. Printer condition and LED status

Printer status

Power ON condition On - 10 Ink sequence Blink - 6 Ink cartridge change mode Blink - 5 Data processing Blink - 9 Paper out *1 - On 4 Paper jam condition *1 - On 3 Ink end (Black) *1 - On -> Blink 8 Ink level low (Black) - Blink-> Blink 8 Ink end (Color) *1 - On -> Blink2 8 Ink level low (Color) - Blink-> Blink2 8 Ink end (Black and Color) - On -> On 8 No ink cartridge

(Black and Color) *1

Power Error

- On 7

Indicators

Priority

1.4.4 Error Status



Ink end error

When the printer runs out the most amount o f the in k o f any on e color , it indicates ink low and keeps printing. When the printer runs out the whole ink of any color, it stops printing and indicates ink end error. User is then requested to install a new ink cartridge in this state.



Paper out error

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



Paper jam error

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



No ink cartridge

When the printer detects that ink cartridge comes off, or failed to read or write CSIC data, it goes into this error mode.



Maintenance request

When the total amount of ink wasted through cleanings and flushing reaches to the limit, printer indicates this error and stops. In such a case, the absorber in the printer enclosure needs to be replaced with new one by a service person.



Fatal error

Carriage control error.

Maintenance request (Ink overflow counter error) *1

Fatal error *1 Off On 1 Special setting Blink2 Blink2 -

Alt Blink Alt Blink 2

" - " : Indicator status don't change. " A -> B " :A is a indicator condition when carriage is in Home Position.

B is a indicator condition in Ink exchange sequence. *1: refer to 1.4.4 "Error Status"or detailed information. Blink : On 0.5sec + Off 0.5sec

Blink2 : On 0.2sec + Off 0.2sec + On 0.2sec + Off 0.4sec

PRODUCT DESCRIPTION PANEL CONTROL 25

EPSON Stylus PHOTO 810/820/830 Revision B

1.4.5 Printer Initialization

There are four kinds of initialization method, and the following explains each initialization.

1. Power-on initialization This printer is initialized when turning the printer power on, or printer recognized the cold-reset command (remote RS command). When printer is initialized, the following actions are performed. (a) Initializes printer mechanism (b) Clears input data buffer (c) Clears print buffer (d) Sets default values

2. Operator initializatio n This printer is initialized when turning the printer power on again within 10 seconds from last power off, or printer recognized the -INIT signal (negative pulse) of parallel interface. When printer is initialized, the following actions are performed. (a) Cap the printer head (b) Eject a paper (c) Clears input data buffer (d) Clears print buffer (e) Sets default values

3. Software initialization The ESC@ command also initialize the printer. When printer is initialized, the following actions are performed. (a) Clears print buffer (b) Sets default values

4. Power-on initi alization except I/F The printer recognized the IEEE 1284.4 “rs” command. When printer is initialized, the following action is performed. (a) Initializes printer mechanism (b) Clears input data buffer (c) Clears print buffer (d) Sets default values except I/F

PRODUCT DESCRIPTION PANEL CONTROL 26

OPERATING PRINCIPLES

CHAPTER

EPSON Stylus PHOTO 810/820/830 Revision B



2.1 Overview

This section describes the operating principles of the Printer mechanism and electrical circuit boards. Like the previous printers (Stylus COLOR 480/580), the Stylus PHOTO 810/820 has only the following two circuit boards and does not have the control panel

board.



Main board



Main board



Power supply board



Power supply board

: Due to this, the Stylus COLOR 480/580 does no t have sw itches ( Power, Err or reset,

(Stylus Photo 810/820) (Stylus Photo 820/830)

: C417/C418 Main/Main-B board : C483/484 Main-B board

: C417 PSB/PSE board : C482 PSH (For 42V)

Ink cartridge replacement) and LEDs. However, the Stylus PHOTO 810/820 has them on the C418 Main board instead of the control panel board.

: C418 Main/Main-B board is used for the Stylus C60 and Stylus Photo 810/820. However, there is difference of ASIC & PROM mounted on the C418 Main/ Main-B board between the Stylus C60 and the Stylus Photo 810/820.

No porous pad in cap



Cap unit with wiper

Star wheel roller

CR unit

Paper eject roller

PF motor

PF rolle

CR timing belt

HP/PE Senso r

LD Roller

Pad holder

(Paper return plate)

2.1.1 Printer Mechanism

The Printer mechanism for the Stylus PHOTO 810/820 is newly designed. But, the

LD pad

Compression spring

basic component of the Printer mechanism is almost the same as the previous printer (Stylus COLOR 480/580). And als o, Stylus Pho to 820/830 is successor to Stylus Photo 810/820 and is the same as its printer mechanism.

This printer consists of Printhead, Carriage mechanism, Paper loading mechanism, Paper feeding mechanism, Ink system (Pump mechanism including newly designed Carriage lock mechanism, Capping mechanism including newly designed Wiper mechanism).

Clutch mechanism

Like the previous printers (Stylus COLOR 480/580), the Stylus PHOTO 810/820 is equipped with two stepping motors; one for the Paper loading/feeding mechanism and the Pump mechanism with the CR lock mechanism, and one for the CR mechanism.

Change lever

Pump unit

The ASF unit for the Paper loading mechanism uses rear entry fro nt eject system. And, single LD roller in Holder shaft unit loads a paper to the Printer mechanism.

Cap unit

CR motor

The Cap unit which adopts the valveless mechanism is newly designed on this printer as follows.

Figure 2-1. Printer mechanism block diagram

Operating Principles Overview 28

EPSON Stylus PHOTO 810/820/830 Revision B

2.1.2 Printhead

The Printhead uses the same U-CHIPS type as the previous printer (Stylus COLOR

680), and makes it possible to perform multiple shot printing and variable dot printing. The Printhead nozzle configuration is as follows.



Nozzle layout Black: 48 nozzles x 1row (nozzle pitch of row: 1/120 inch) Color: 48 nozzles x 1 row/col (nozzle pitch of row: 1/120 inch)

The nozzle layout when viewed from the back surface of the Printhead is shown below.

0.2117(3/360inch)

Figure 2-2. Nozzle layout

The Printhead has the electric poles to store the ink consumption amount data into the CSIC chip mounted on the ink cartridge. By storing the ink consumption amount data, this printer can detect the ink consumption status, such as ink low/end condition.

The basic operating principles of the Printhead, which plays a major role in printing, are the same as the previous printer (Stylus COLOR 680); on-demand method which uses PZT (Piezo Electric Element). In order to uniform the ejected ink amount, the Printhead has its own Head ID (13 digits code for this Printhead

820/830

) which adjusts PZT voltage drive features. So, you are required to store the Head I D pasted on the Printhead into the EEPROM by using the Adjustment program when replacing the Printhead, the Main board, the Printer mechanism with new one. (Note : there are no resistor arrays to determine the Head ID on the Main board.) And then, based on the stored Head ID into the EEPROM, the Main board generates appropriate PZT drive voltage.

for Stylus Photo 810/

Following explains the basic components for the Printhead.



PZT PZT is an abbreviation of Piezo Electric Element. Based on the drive waveform generated on the Main board, the PZT selected by the nozzle selector IC on the Printhead pushes the top of the ink cavity, which has ink stored, to eject the ink from each nozzle on the nozzle plate.



Electric poles for CSIC

This electric poles connects the CSIC chip mounted on the ink cartridge. By using this poles, current ink consumption amount data is red out from the CSIC chip. And, the latest ink consumption amount data is written into the CSIC chip.



Nozzle Plate The plate with nozzle holes on the Printhead surface is called Nozzle Plate.



Filter When the ink cartridge is installed, if any dirt or dust around the cartridge needle is absorbed into the Printhead, there is a great possibility of causing nozzle clog and disturbance of ink flow, and alignment failure and dot missing finally. To prevent this problem, a filter is set under the cartridge needle.



Ink Cavity The ink absorbed from the ink cartridge goes through the filter and then is stored temporarily in this tank called “ink cavity” until PZT is driven.

CSIC chip

Ink cartridge

Needle

Nozzle plate

Cavity

PZT

Nozzle selector board

Elect ric poles for CSIC

* Head ID for the Prin th e a d

is stored to the EEPROM.

Filter

Figure 2-3. Printhead sectional dra wing

Operating Principles Overview 29

EPSON Stylus PHOTO 810/820/830 Revision B

2.1.2.1 Printing Process

This section explains the process which the Printheads of On-Demand inkjet printers eject ink from each nozzle.

Normal state :

When the printing signal is not output from the Main board (C418 Main/Main-B, C483/C484 Main), or the PZT drive voltage is not applied, the PZT does not change the shape. Therefore, the PZT does not push the ink cavity. The ink pressure inside the ink cavity is kept normal. (refer to Figure 2-4 : Normal state)

Ejecting state :

When the print signal is output from Main boar d (C418 Main/Main-B , C483/C484 Main), the nozzle selector IC located on the Printhead latches the data once by 1byte unit. Based on the drive waveform (common voltage) generated on the Main board, the PZT selected by the nozzle selector IC pushes the top of the ink cavity. By this operation, the ink stored in the ink cavity is ejected from nozzles. (refer to Figure 2-4 : Ejecting state)

Ink path

Normal state

PZT

Ink cavity

2.1.2.2 Printing Method

For printing dot system, the Stylus PHOTO 810/820 has the following two kinds of printing mode.



Multiple shot printing



Variable dot printing

The above two printing modes are automatically selected depending on the media and the resolution setting of the printer driver. The following explains each printing mode.



Multiple shot printing This printing mode is developed to improve the print quality on plain paper or transparencies in low resolution. The multiple shot printing mo de uses n ormal do t, and the number of dot shot varies from 1 shot to maximum 3 shots depending on the print data to enable to output sharp image even in a low resolution.



Variable dot printing This printing mode is developed to improve the print quality on exclusive paper. This mode is basically the same as variable dot printing mode used on other products; micro dot, middle dot and la rge dot compose this mode. The pri nting dot size varies according to the print data and this mode enab les to output even sharper image on exclusive paper.

Nozzle

PZT drive voltage

Ejecting state

Nozzle plate

Figure 2-4. Printhead printing process

Operating Principles Overview 30

EPSON Stylus PHOTO 810/820/830 Revision B

2.1.3 Carriage Mechanism

The Carriage mechanism consists of CR motor, Carriage unit (including the Printhead and CR guide shaft), CR timing belt and CR home pos i ti on s ens or (H P/ PE s ens or) etc. Following figure shows you each component for the CR mechanism.

HP/PE sensor

HP detection lever

CR unit

CR guide shaft

Figure 2-5. Carriage mechanism (Top view)

The following stepping motor controls the CR mechanism on this printer.

Table 2-1. Carriage motor specification

Items Specifications

Type 4-Phase/ 200-Poles HB Stepping motor

Drive Voltage +42 V +/ - 5% (DRV IC voltage)

CR motor

CR timing belt

The drive of the CR motor is transmitted to the CR unit via the CR timing belt. And, the CR home position is detected with the HP/PE sensor. This sens or is available as the CR home position sensor while the CR motor operates in each sequence. (The function of this sensor varies depen ding on the run ning condition of the motors. I t is availab le as the PE sensor when the PF motor operates in each sequence.)

When the detection plate molded on the CR unit pushes down the HP detection lever and the CR home position is detected with HP/PE sensor, HIGH signal is output to the CPU.

HP detection lever

CR HP detection plate

HP detection lever

Low signal

Right side view

CR HP detection plate

High signal

Figure 2-6. CR home position detection

Moreover, like the previous printers (Stylus COLOR 480/580), this printer does not also have the PG adjustment mechanism. Therefore, the CR guide shaft is assembled with the defined PG value (1.7 ± 0.2 mm).

Coil Resistance 7.8 Ω +/ - 10% (per phase at 25 degrees)

Inductance 14 mH +/ - 20% (1KH 1Vrms)

Drive Method Bi-Polar drive

Driver IC

LB1946

(Stylus Photo 81 0/820)

(Stylus Photo 820/830 )

A6615

For your reference, in case that the CR home position is not detected with the HP/PE sensor although the CR unit moves correctly, the printer indicates the "Fatal error". And also, in case that the CR unit cannot move outside the home position and the CR home position is not detected with the HP/PE sensor, the printer indicates the "Paper jam error".

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EPSON Stylus PHOTO 810/820/830 Revision B

2.1.4 Paper Loading/Feeding Mechanism

The following stepping motor controls the Paper loading/feeding mechanism on this printer.

Table 2-2. PF motor specifications

Item Description

Motor type 4-Phase/ 96-Poles PM Stepping motor

Drive voltage +42 V +/ - 5% (DRV IC voltage)

Coil Resistance

Inductance

6 Ω +/ - 10% (per phase at 25 degrees)

5.4 Ω +/ - 10% (per phase at 25 degrees)

9.5 mH +/ - 20% (1kH 1Vrms)

8.2 mH +/ - 20% (1kH 1Vrms)

Driving method Bi-Polar drive

Driver IC LB1946

Left side view

Spur gear 60 (PF roller)

(Stylus Photo 810/ 820) /

Spur gear 60 (Paper eject roller )

(Stylus Photo 81 0/820)

(Stylus Photo 820/830)

(Stylus Photo 81 0/820) (Stylus Photo 82 0/830)

(Stylus Photo 82 0/830)

A6615

PF roller

HP/PE sensor

The drive of the PF motor is transmitted to the LD roller shaft and the PF roller through gears for the Paper loading/feeding mechanism. The Paper loading mechanism plays a role in loading a paper from the ASF unit to the PF roller. And also, the Paper feeding mechanism plays a role in feeding a paper loaded from the ASF unit. The functions of the Paper loading/feeding mechanism varies depending on the rotational direction of the PF motor as the table below.

Table 2-3. ASF unit function & PF motor rotational direction

Directions

Clockwise

Counterclockwise

: The PF motor rotation direction = seen from the left side of the printer.

Following shows you the transmission path of the PF motor drive to the LD roller, the PF roller and the Paper eject roller. ( order of transmission path.)

Spur gear 10,8 (PF roller)

Corresponding functions

• Release the Change lever from the Clutch mechanism

• Pick up and feed a paper

• Set the Change lever on the Clutch mechanism

The numbers in the fol low ing figure show you the

Right side view

Spur gear

35.2 No paper

Detect a

paper

PF motor pinion gear

PF motor

Paper eject roller

Combination gear 18.28

Spur gear 27.2

Combination gear 16.32

Spur gear 25.6

PE detection

Low signal

Paper

lever

High signal

Note: The Clutch gear is molded on the backside of the Spur gear 35.2 such as Combination gear.

Figure 2-7. Paper loading/feeding mechanism

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EPSON Stylus PHOTO 810/820/830 Revision B

For your reference, the top or the end of a paper is usually detected with the HP/PE sensor. In case that the HP/PE sensor cannot detect the top of a paper in the paper loading sequence, the printer indicates the "Paper out error". If the HP/PE sensor cannot detect the end of a paper in the paper feeding sequence, the p rinter ind icates th e "Paper jam error". As for the details, refer to Chapter 3 "Troubleshooting".

2.1.4.1 Paper Loading Mechanism (ASF unit)

The Paper loading mechanism consists of the Change lever in the Pump unit, the Holder shaft unit (including the Clutch mechanism) and the ASF unit. The Change lever and the Clutch mechanism play a major role in the Paper loading mechanism as follows.

1. ASF home position detection function The ASF unit on this printer does not have the ASF home position sensor. Instead of the ASF home position sensor, the Change lever and the Clutch mechanism is used to detect the ASF home position. When the Change lever is set on the Clutch mech anism with the counterclockwise rotation of the PF motor pinion gear, the ASF home position is detected by this lever for the paper loading operation. In this time, the printer cannot load a paper from ASF unit because the drive of the PF motor is not transmitted to the LD roller shaft.

2. Paper loading function When the Change lever is released from the Clutch mechanism with the clock wise rotation of the PF motor pinion gear, the ASF home position detection function is changed over to the paper loading function . Therefore , the printer can lo ad a paper from ASF unit because the drive of the PF motor is transmitted to LD roller shaft.

On this printer, the Paper return plate is built in ASF unit instead of the Paper return lever. The LD pad is stacked on the Paper return plate, and it works with the tension force of the Torsion spring 29.1 mounted on the ASF frame. When an arc portion of the LD roller pushes down this plate into the ASF frame d uring the paper loading sequence, a paper is loaded from the ASF unit. A cutout portion of the LD roller releases this lever and this plate returns papers to the stand-by position for next paper l oading operation.

Following figures (refer to Figure 2-8/Figure 2-9) show you the ASF paper loading sequence and the operation of each mechanism.

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EPSON Stylus PHOTO 810/820/830 Revision B

Step 1 (ASF Home position) Step 2

When the PF motor pinion gear rotates CW direction (Right side view), the Change lever pu shes down the Clutch lever as right figure and the Clutch lock tooth is disengaged from the Clutch gear. As the result, the LD roller shaft dose not rotate at all because the drive of the PF motor is not transmitted. In this time, the ASF hopper is also pushed down by the ASF hopper release lever on the LD roller shaft, and the Paper return plate is set to avoid that papers a re slipped down from the paper set position.

This position is the ASF home position.

Hopper & Paper return plate condition

LD roller shaft

Paper return plate

Torsion spring 29.1

ASF frame

Gear rotation direction (Right side view)

Spur gear 10.8 (PF roller)

PF motor pini on gear (CW) → Spur gear 10.8 (PF roller) (CCW) Combination gear 18.28 (CW) → Spur gear 27.2 (CCW) Spur gear 25.6 (CW) → Change lever (CW) Combination gear 16.32 ( CCW) → Spur gear 35.2 (CW) * Above transmission pass = seen from the right side of

LD roller

Change lever

Clutch lever

Clutch lock tooth

Clutch

→

ASF hopper release lever

Hopper

Compression spring 2.50

Clutch gear

→

the printer

Hopper & Paper return plate condition

When a paper is loaded from the ASF unit, the Change lever moves to the front side of the printer with the CCW rotation (right side view) of the PF motor pinion gear and releases the Clutch lever.

Gear rotation direction (Right side view)

To Front side

Clutch lock tooth

As the result, the Clutch turns back to the engagement positio n by the tension force of the Tension spring 0.143. And, the Clutch gear is engaged with the Clutch lock tooth to transmit the drive of the PF motor as left figure. In this time, the Change lever is locked

Tension spring 0.143

→

PF motor pinion gear (CCW) → Spur gear 10.8 (PF roller) (CW) Combination gear 18.28 (CCW) →Spur gear 27.2 (CW) Spur gear 25.6 (CCW) → Change lever (CCW) Combination gear 16.32 (CW) → Spur gear 35.2 (CCW) * Above transmission pass = seen from the right side of

Clutch gear

→

the print

→

instantaneously by the protrusion on the backside of the CR unit to change over from the ASF home position detection function to the paper loading function surely.

Figure 2-8. ASF paper loading sequence (Step 1, 2)

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EPSON Stylus PHOTO 810/820/830 Revision B

The PF motor pinion gear rotates CW direction (right side view), and the drive of the PF motor is transmitted to the LD roller shaft through the Clutch lock tooth and the Clutch gear. After the LD roller pushes down the Paper return plate into the ASF frame, the ASF hopper is released by the tension force of the Compression spring 2.50. And, a paper is picked up with the frictional force between the LD roller and the Pad hopper.

Step 3

Hopper & Paper return plate cond ition

ASF hopper release lever

Gear rotation direction (Right side view)

PF motor pinion gear (CW) → Spur gear 10.8 (PF roller) (CCW) Combination gear 18.28 (CW) → Spur gear 27.2 (CCW) Spur gear 25.6 (CW) → Change lever (CW) Combination gear 16.32 (CCW) → Spur gear 35.2 (CW) * Above transmission pass = seen from the right side of

LD roller shaft

→

Compression spring 2.50

ASF hopper release lever

→

the printer

Step 4

Hopper & Paper retur n plate condition

ASF frame

Paper return

plate

While the LD roller rotates CW direction (right si de view) continuously, the top of a paper is loaded to the PF roller. In this rotation, the ASF hopper returns to the open position and the Paper

Gear rotation direction (Right side view)

return plate is released from the LD roller. In this time, this plate returns papers to the stand-by position in ASF unit for next paper load ing operation. Then, when the rolling LD roller & the Clutch come at the above “Step1” positi on, the Clutch lever is locked with the Change lever again. In this time, the drive of the

→

PF motor pinion gear (CW) → Spur gear 10.8 (PF roller) (CCW) Combination gear 18. 28 (CW) → Spur gear 27.2 (CCW) Spur gear 25.6 (CW) → Change lever (CW) Combination gear 16.32 (CCW) → Spur gear 35.2 (CW) * Above transmission pass = seen from the right side of

→

the printer

PF motor is interrupte d and the drive is transmitted only

→

to the PF roller side for the paper feeding sequence.

Figure 2-9. ASF paper loading sequence (Step 3, 4)

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EPSON Stylus PHOTO 810/820/830 Revision B

2.1.4.2 Paper Feeding Mechanism

The Paper feeding mechanism consists of PF motor, PF roller, Paper eject roller *1, Paper end sensor (HP/PE sensor) etc. The Paper feeding mechanism feeds a paper loaded from ASF unit by using pairs of rollers.

: Different from the Paper eject roller for the Stylus C60, the metal shaft is used

for this printer to improve the paper feeding accuracy.

1. One pair is the PF roller and the Paper guide roller which is assembled in the Paper guide upper/left. The drive of the PF motor is transmitted to the Paper guide roller through the PF roller.

Left side view

Spur gear 60 (PF roller)

Paper guide roller Star wheel

Spur gear 60 (Paper eject roll er )

2. Another pair is the Paper eject roller and the Star wheel which is assembled on the Front frame. The drive of the PF motor is transmitted to the Star wheel through the Paper eject roller.

Following figure shows you the transmission path for the PF roller & the Paper guide roller and the Paper eject roller & the Star wheel.

The top of a paper is loaded to the PF roller from the ASF unit in the paper loading sequence. And then, when the PF motor pinion gear rotates CCW direction (left side view), a paper is fed by the PF roller & the Paper guide roller and the Paper eject ro ller & the Star wheel in the printing operation & the paper feed sequence.

PF roller

PF motor

Paper eject roll er

PF motor pinion gear

Transmission path (Left s ide v iew) :

PF motor pinion gear (CCW) → Spur gear 60 (PF roller /Paper eject roller) (CW)

Figure 2-10. Paper feeding mechanism

Operating Principles Overview 36

EPSON Stylus PHOTO 810/820/830 Revision B

2.1.5 Ink System Mechanism

The Ink system mechanism consists of Pump mechanism with Carriage lock mechanism and Capping mechanism with Wiper mechanism. Following table lis ts the function for each mechanism.

Table 2-4. Function for each mechanism

Mechanism Function

Capping mechanism *

Wiper mechanism

Pump mechanism

Carriage lock mechanism

* Like the previous printers (Stylus COLOR 480/580), this printer adopts the

valveless cap system. The air valve system used for the previous printer (Stylus COLOR 740) have two functions by the CR position in the capping condition as follows.

1) Valve closing condition (CL position) By closing the air valve, the ink is forcibly absorbed from the ink cartridge or

the ink cavity by the Pump unit and is ejected to the Waste drain ink pad while the CR unit is in the CL position.

This is to cover the surface of the Printhead with the cap in order to

This is to remove the foreign material and unnecessary ink on the nozzle plate of the Prin th ead.

This is to eject the ink fro m the in k cartridge, the ink cavity and the cap to the Waste drain ink pad.

This is to lock the CR unit with the Change lever while the CR unit is at the home position.

prevent the nozzle from increasing viscosity.

2.1.5.1 Capping Mechanism

The Capping mechanism covers the Printhead with the Cap to prevent the nozzle from increasing viscosity when the printer is in stand-by state or when the printer is off. Unlike the previous printers (Stylus COLOR 480/580), the Cap unit is newly designed for this printer as follows.

1. Non porous pad in Cap Due to this, the cap is newly designed as follows.

Ink eject hole

For Stylus Photo 810/820/830

Ink eject hole

Porous pad

For Stylus COLOR 480/580

2) Valve opening condition (Ink absorption position) By opening the Air valve, the negative pressure is decreased and only the ink

Figure 2-11. Cap mechanism

inside the Cap is ejected while the CR unit is in the further right side than the CL position. (the ink is not absorbed from the ink cartridge or the ink cavity.)

The following shows you the CR unit position for each condition easily.

Printing area

CR home position

CL position (valve closing condition)

Ink absorption position (valve opening condition)

The Cap unit used for the previous printers (Stylus COLOR 480/580) has the porous pad to keep the moisture in the Cap sequence

. The following points are modified to get the same effects on new Cap unit

and prevent that the air bubbles occur in CL

without the porous pad.

*1 : The diameter of the ink eject hole is smaller than that of Stylus COLOR 480 But, on the valveless cap system, the above 2) operation is done outside the capping position. The CR unit moves outside the CR home position and the pump absorbs the ink inside the Cap.

/580.

*2 : The cap is modified so that the ink flows with air bub bles to the ink eject h ole

in the ink absorption sequence more easily.

Operating Principles Overview 37

EPSON Stylus PHOTO 810/820/830 Revision B

2. Wiper with the Cap unit The wiping operation is controlled by the CR unit movement. This operation is usually performed with every CL sequence which is to absorb the ink fro m the ink cartridge, the ink cavity by the Pump unit. Following figure shows you the mechanism for the wiping operation.

When the CR unit is in the home position, the hook of the Slider lock lever is not latched to the dent of the Cap frame. In this time, the protrusion of the Cap slider does not reach the rightmost position of the Cap frame.

When the CR unit moves to the left side from the wiper setting position, the Cap unit is pulled back by the tension force of the

0.523

Extension spring

In this time, the Cap unit is automatically set to the wiping position because the hook on the Slider lock lever is latched to dent of the Cap frame. And, the wiping operation is performed according to the CR unit movement.

Step 1

Protrusion

Not latched

Capping position (CR home position)

Step 3

Protrusion of the CR unit

Latched

Wiping position

Step 2

Latched

Wiper setting position

Step 4

Released

Released position (Bottom position)

The CR unit moves to the wiper setting position on the right mos t position of the Cap frame with keeping the cap covered. In this time, the hook of the Slider lock lever is latched to the dent of the Cap frame.

When the wiping operation is finished and the CR unit m oves further to the left side, the hook of the CR unit hits to the Slider lock lever. In this time, the Slider lock lever is released and the Cap slider returns to the bottom position completely. (The broken line is the position of the CR unit & the Slider lock lever just before being released.)

Figure 2-12. Wiper mechanism

Operating Principles Overview 38

EPSON Stylus PHOTO 810/820/830 Revision B

2.1.5.2 Pump unit mechanism

The PF motor also controls the Pump unit mechanism (including the Change lever) as well as the Paper loading/feeding mechanism. The drive of the PF motor is always transmitted to the Pump unit. (And also, its drive is transmitted to the LD roller through the Clutch mechanism & the Change lever.)

On this printer, the Pump unit mechanism including the Change lever plays a major role expecting the ink eject operation. And, these operations control depending on the PF motor rotational direction as the following table below.

Table 2-5. PF motor rotational direction & Ink system mechanism

Directions (*1) Functions

Clockwise

Counterclockwise

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

Spur gear 60 (PF roller)

• Absorbs the ink by the Pump unit

• Release the Change lever from the Clutch mechanism

• Non operation

Left side view Right side view

Spur gear 60 (Paper eject roller)

1. Ink eject operation (usual operation) The ink is absorbed from the ink cartridge, the ink cavity and is ejected to the Waste drain ink pad from the cap when the ink tube is pressed by a roller in the Pump unit.

Following figure shows you the overview of the Pump unit mechanism operation

Cap unit side

Waste drain Ink pad side

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

Figure 2-13. Pump mechanism

Pump unit

Cap unit

Change Lever

Spur Gear 35.2

PF roller

Combination Gear 16.32

PF motor pinion gear

Transmission Path :

Combination

Gear 18.28

Spur Gear 25.6

Spur Gear 27.2

(Pump Unit Gear)

PF motor pinion gear (CCW) → Spur gear 60 (PF roller & Paper eject roller) (CW)→ Spur gear 10.8 (CCW) → Combination gear 18.28 (CW) → Spur gear 27.2 (Pump unit gear) (CCW) ( * Above transmission pass = seen from the right side of the printer)

Figure 2-14. PF motor drive transmission path to the Pump unit

Operating Principles Overview 39

EPSON Stylus PHOTO 810/820/830 Revision B

2. Carriage lock operation by the Change lever Unlike the previous printer (Stylus COLOR 680), this printer does not have the Carriage lock lever with the Wiper. Instead of the Carriage lock lever, the Change lever is set to the front side of the printer while the CR unit is in the CR home position. (As for the detailed mechanism for setting the Change lever, refer to Figure 2-8 Step 2)

2.1.6 Ink Sequence



Initial ink charge After the printer is purchased and the power is turned on for the first time, the printer must perform the initial ink charge to charge the ink inside the ink cavity. When the initial ink charge is completed properly, the printer releases the flag inside the EEPROM. The Stylus PHOTO 810/820 takes 80 seconds to complete the initial ink charge sequence and consumes about 1/10 of the brand-new black ink cartridge & about 1/8 of the brand-new color ink cartridge. If the power is turned off during the initial ink charge, the CL1' will be performed at next power on timing.



Manual Cleaning The Stylus PHOTO 810/820 provides four types of manual cleaning to clean air bubbles, clogged ink with viscosity or foreign substances. The following manual CL can be performed by the control panel operation, the printer driver utility and the Adjustment program.



CL1

- Ink absorption Black Ink: 0.052g, Color Ink: 0.258g

- Wiping operation Wipes the nozzle plate by the rubber part on the Cap unit.

- Flashing operation Prevents color from mixing, and stabilizes ink surface inside the nozzle.



CL1'

- Ink absorption Black Ink: 0.27g, Color Ink: 1.33g

- Wiping operation Wipes the nozzle plate by the rubber part on the Cap unit.

- Flashing operation Prevents color from mixing and stabilizes ink surface inside the nozzle.

Operating Principles Overview 40

EPSON Stylus PHOTO 810/820/830 Revision B



CL1"

- Ink absorption Black Ink: 0.52g, Color Ink: 2.58g

- Wiping operation Wipes the nozzle plate by the rubber part on the Cap unit.

- Flashing operation Prevents color from mixing and stabilizes ink surface inside the nozzle.



CL2

- Ink absorption Black Ink: 0.18g, Color Ink: 0.92g

- Wiping operation Wipes the nozzle plate by the rubber part on the Cap unit.

- Flashing operation Prevents color from mixing and stabilizes ink surface inside the nozzle.

In case that the manual CL and the nozzle check pattern printing is alternately performed, the CL order is CL1 → CL1' → CL2. (In case that the printer keeps the power off condition more than the specific period , the CL orde r is CL2 → CL1 → CL1' → CL2 → CL1'' → CL2 → CL1 → CL1'.) Like the previous printers (Stylus COLOR 480/580), CL1 is selected automatically and performed In case that any printing operation is not performed between each manual CL. Additionally, if the manual CL is performed with over 5 pages printing cycle, CL1 is always selected and performed. Additionally, if either black or color I/C is ink low or end condition, any manual cleaning is prohibited and it is displayed on the LED indicators.

cleaning period is over the specific period, the printer performs the timer cleaning automatically. In this time, the printer stores the timer command in 02 <H>, 03 <H>, 04 <H> and 05 <H> of the EEPROM. Maximum 0.503 ml of the ink is consumed in the timer cleaning. (0.083ml of black ink and 0.42ml of color ink are consumed.)



Flashing This printer performs the following two kinds of the Flashing for the following purpose.



Periodical Flashing This is due to avoid the increment of both ink’s viscosity in the printhead nozzle during the continuous pr inting and the sp ecific small amoun t of the ink is ejected in the cap based on the periodical flashing timer.



Periodical large amount Flashi ng This is due to avoid the increment of black ink’s viscosity in the printhead nozzle during the continuous pr inting and large amount of the ink is ejected in the cap based on the periodical large mount flashing timer.



Timer Cleaning Like the previous printers (Stylus COLOR 480/580), this printer dose not have Timer IC and Lithium battery which is used for the backup power source for Timer IC. So, this printer manages the printer off period or cleaning cycle by using the following method. The printer driver sends the timer command to the printer before printing. The timer command is generated based on the PC's timer and it consist s of y ear, month date, hour, minute and second. As soon as the printer receives the timer command from the printer driver, the printer stores its command in address 04 <H> and 05 <H> in the EEPROM. Then, it is compared with the latest CL time which is stored in address 02 <H> and 03 <H> in the EEPROM. And, In case that the timer

Operating Principles Overview 41

EPSON Stylus PHOTO 810/820/830 Revision B

2.2 Electrical Circuit Operating Principles

The electric circuit of the Stylus Photo 810/820/830 consists of the following boards.



Main board: Stylus Photo 810/820 : C417/C418 Main/Main-B Stylus Photo 820/830 : C483/C484 Main-B Board



Power supply board:

Stylus Photo 810/820 : C417 PSB/PSE Board Stylus Photo 820/830 : C482 PSH (For 42V)

: C418 Main/Main-B board i s used for both the Stylus C60 and the Styl us Photo

810/820. Followings show you the specification of the C418 Main/Main-B board.

- For the Stylus C60

1) C418 Main : 2 in 1 ASI C + So ld ering SOJ ROM (from the first mas s pro duct i o n)

2) C418 Main/Main-B : 3 in 1 ASIC + Soldering SOJ ROM (Running change)

- For the Stylus Photo 810/820

1) C418 Main/Main-B : 3 in 1 ASIC + Soldering SOJ ROM (from the first mass production)

: C483/C484 Main-B board is used for both the Stylus C61/C62/Photo 820/830.

Followings show you the specification of the C483/C484 Main-B board.

1) C483/C484 Main-B : 2 in 1 ASIC + Soldering SOJ ROM (from the first mass production)

Note: CPU, ASIC and PROM is integrated as one chip (IC1) on the Main board. This section provides operating principles of C417/C418 Main, C417/C418 Main-B, C483 /C484 Main-B board and C417 PSB/PSE, C482 PSH board. refer to Figure 2-15/ Figure 2-16 for the major connection of the each boards and their roles.

Printer mechanism

C418 Main board

+5VDC

C417 PSB/PSE board

+42VDC

CR motor

PF motor

Head driver board

HP/PE sensor

Figure 2-15. Electric circuit (Stylus Photo 810/820)

Printer mechanism

C418 Main board

+3.3VDC

CR motor

PF motor

Head driver board

HP/PE sensor

+42VDC

C417 PSB/PSE board

Figure 2-16. Electric circuit (Stylus Photo 820/830)

Operating Principles Electrical Circuit Operating Principles 42

EPSON Stylus PHOTO 810/820/830 Revision B

2.2.1 P/S board

The power supply boards of the Stylus PHOTO 810/820/830 uses a RCC (Ringing Chalk Converter) circuit, which generates +42 VDC for drive line and +5VDC for logic line to drive the printer. The application of the output voltage is described below.

Table 2-6. Application of the DC voltages

Voltage Application

• Motors (CR Motor, PF Motor)

+42VDC

+5VDC

(Stylus Photo 81 0/ 820)

+3.3V DC

(Stylus Photo 82 0/ 830)

AC voltage input from AC inlet first goes through filter circuit that removes high frequency components and is then converted to DC voltage via the rectifier circuit and the smoothing circuit. DC voltage is then lead to the switching circuit and FET Q1 preforms the switching operation. By the switching operation of the primary circuit, +42VDC is generated and stabilized at the secondary circuit. This +42VDC generated by the secondary circuit is converted to +5VDC by the chopping regulator IC of the secondary circuit.

• Printhead common voltage

• Printhead nozzle selector 42V drive voltage

• C417/C418 Main/Main-B control circuit logi c

•Sensor

• C483/C484 Main-B control circuit logic

•Sensor

2.2.1.1 C417 PSB/PSE board

+5VDC+42VDC

IC51

+5V Regulator

R92,R93,Q91,ZD51

+42VDC Line Constant Control

C51

Smoothing Circuit

D51

TRANS(T1)

ZD53

+5VDC Line Over Voltage Limitation

ZD52,87

+42VDC Line Over Voltage Limitation

Q1C11

ZD91

C84,Q84

Power Drop Delay Circuit

PSC Signal from Main board

+42VDC Line Drop Limitation

Q2,Q31,Q32,Q33

PC1

Photo Coupler

AC Input

Smoothing Circuit

Over Current Protection

F1,TH1

Filter Circuit

L1,C1

Main Switching Circuit

Full Wave Rectifier circuit

DB1

Abnormally Feed back circuit

Figure 2-17. C417 PSB/PSE board block diagram

The C417 PSB/PSE board has the various control circuits to stop voltage output if a malfunction occurs on the power supply board or the main board while the printer mechanism is on duty. Following explains each control and protection circuit.

Operating Principles Electrical Circuit Operating Principles 43

EPSON Stylus PHOTO 810/820/830 Revision B

1. Regardless of the state of the power switch (On or OFF), the voltage is alway s applied to the primary side of the power supply board from the moment or at the state that AC-plug is plugged in. At this time, F1 plays a role of preventing AC100V from coming into the F1. L1 also prevents high harmonic wave noise generated in the RC circuit filter which consists of C1 from going out, and eliminates the noise from outside here.

2. The AC is full-wave rectified by the diode bridge DB1, and converted to x AC in voltage by the smoothing electrolytic capacitor C11.

3. The pressured up direct current turns Q1 on through the starting resistor R31 and starts the primary side of the circuit.

4. When the primary side is On, the energy (current) led by the electromagnetic induction through the trans (T1) does not flow to the secondary side since the diode (D51) on the secondary side is installed in the opposite direction.

5. When the energy which is charged in the trans is reaching the saturated state, the voltage which makes Q1 on becomes weak gradually. At the point that this voltage drops at the certain voltage, C13 absorbs the current in the opposite direction and Q1 is quickly shut off by the resulting sharp drop.

6. When the primary side is turned off, the energy charged in the T1 is opened according to the diode (D51) direction which is installed on the secondary side. Basically, 42 V DC is output by these circuit operations and the number of T1 spiral coil.

7. +5VDC is generated by pressured down this +42VDC as power supply. IC51 pressures down the +42VDC and generates precise +5VDC by chopping off the output, forming the standard santooth wave form by the outer RC integration circuit.



+42Vline over voltage protection circuit : The output voltage line is monitored by ZD52 and ZD87. If the output voltage level of +42VDC line exceeds +48V, this circuit stops the operation of the switching FET Q1 via PC1,Q82 and Q83, and prevents high voltage from being applied to the secondary side.



+42VDC line drop limitation circuit : PC1 drives with +36V and ZD90 is monitoring the voltage supplied to PC1. If the supplied voltage level exceeds 37V, this circuit shuts down the +42V line temporarily and prevents the over voltage from being applied to the PC1.



+42Vline over current protection circuit : The output current level is monitored by the F51. When the abnormal current is detected by F51, F51 blows and cuts off the +42V line output to the Main board.



+5V line constant voltage control circuit/+5V line over current protection circuit : The output voltage level of the +5VDC line is monitored by the regulator IC51. If abnormal voltage is detected, the information is fed back to the internal comparator.



+5V line over voltage protection circuit : The output voltage level of the +5VDC line is monitored by ZD53. If the output voltage level of +5DC line exceeds +7V, this circuit stops the operation of the switching FET Q1 via PC1,Q82 and Q83, and prevents high voltage from being applied to the secondary side.

The C417 PSB/PSE board has the various control circuits to stop voltage output if a malfunction occurs on the power supply board or the main board or while the printer mechanism is on duty. Following explains each control and protection circuit.



+42V line constant voltage control circuit : The output voltage level of the +42V line is monitored by R92, R93, Q91 and ZD51. When +42V line reaches about +42.8V, PC1 starts the operation via Q91. Consequently, FET Q1 switching operation is controlled by this circuit to stabilize the +42V line.

Operating Principles Electrical Circuit Operating Principles 44

EPSON Stylus PHOTO 810/820/830 Revision B

2.2.1.2 C482 PSH board

+42VDC

R91,R92,R93,Q91,ZD51

C51

D51

Smoothing Circuit

+5VDC Signal from Main baord

+42VDC Line Over Voltage Limitation

+42VDC Line Constant Control

Smoothing Circuit

TRANS(T1)

ZD53

+5VDC Line Over Voltage Limitation

ZD52,87

Q1C11

Main Switching Circuit

ZD90

+42VDC Line Drop Limitation

Q2,Q3,Q31

PSC Signal from Main board

PC1

Photo Coupler

Abnormally Feed back circuit

1. Regardless of the state of the power switch (On or OFF), the voltage is always applied to the primary side of the power supply board from the moment or at the state that AC-plug is plugged in. At this time, F1 plays a role of preventing AC250V from coming into the F1. L1 also prevents high harmonic wave noise generated in the RC circuit filter which consists of C1 from going out, and eliminates the noise from outside here.

2. The AC is full-wave rectified by the diode bridge DB1, and converted to x

AC in voltage by the smoothing electrolytic capacitor C11.

3. The pressured up direct current turns Q1 on thro ugh the starting r esistor R18, R 28, R17 & R19 and starts the primary side of the circuit.

* Unlike the Stylus Photo 810/820, IC51 which generates +5VDC is not on the C482 PSH board for the Stylus Photo 820/830. +5VDC is generated on the C483/C484 Main-B board.

AC Input

Over Current Protection

F1,TH1

Filter Circuit

R1,L1,C1

Full Wave Rectifier circuit

DB1

The C482 PSH board has the various control circuits to stop voltage output if a malfunction occurs on the power supply board or the main board or while the printer mechanism is on duty. Following explains each control and protection circuit.



+42V line constant voltage control circuit : The output voltage level o f the +42V l ine is moni tored by R9 1, R92, R9 3, Q91 and ZD51. When +42V line reaches about +42.8V, PC1 starts the operation via Q91. Consequently, FET Q1 switching operation is controlled by this circuit to stabilize the +42V line.

Operating Principles Electrical Circuit Operating Principles 45

EPSON Stylus PHOTO 810/820/830 Revision B



+42VDC line drop limitation circuit : PC1 drives with +36V and ZD90 is monitoring the voltage supplied to PC1. If the supplied voltage level exceeds 36V, this circuit shuts down the +42V line temporarily and prevents the over voltage from being applied to the PC1.



+5V line over voltage protection circuit : The output voltage lev el of the +5VDC line, which is generat ed on t he C4 83/C484 Main-B board, is moni tored by ZD53. If the output voltage level of +5DC line exceeds +7V, this circuit stops the operation o f the switching FET Q1 via PC1,Q82 and Q83, and prevents high voltage from being applied to the secondary side.

* +5V line constant voltage control circuit/+5V line over current protection circuit is not on the P/S board because the regulator IC51 is not installed.

Operating Principles Electrical Circuit Operating Principles 46

EPSON Stylus PHOTO 810/820/830 Revision B



2.2.2

C417/C418 Main/Main-B Board

The logic circuit of the C418 Main/Main-B board is composed of the follows;



Logic line (ASIC, DRAM, P-ROM, EEPROM and so no)



Motor control/drive circuit (CR motor/PF motor)



Head control/drive circuit



Interface control circuit (Parallel I/F, USB I/F)



Sensor circuit



Reset circuit



EEPROM circuit



Switch circuit



LED circuit

Unlike the previous printer (Stylus COLOR 680), the panel board is eliminated and the switches/LED lights are mounted on the Main board.



The transceiver with USB I/F is built in the CPU.



D-RAM 4Mbit D-RAM is mounted on the Main board.



One ASIC controls the all functions on the Main board. refer to Figure 2-18 for the 418 Main board block diagram.

D-RAM 4M

(IC4)

Address

Data

P-ROM

(SOJ) 8M

(IC5)

Reset IC

(IC2)

EEPROM

(IC3)

The printer mechanism is controlled by the above circuits. Following explains the major characteristics of this Main board.



Timer IC & Lithium battery are not mounted Unlike the previous printer (Stylus COLOR 680), the Timer IC and the Lithium battery are not mounted on the Main board. So, this printer performs the Power-on cleaning or Timer cleaning based on the time comman d which is s ent fr om th e PC through the printer driver. As for the details, refer to 2.1.6



Use of the 3.3V chips in the logic circuit The 3.3V regulator (IC8) on the C418 Main/Main-B board generates 3.3VDC by pressuring down the 5VDC to drive several chips for the logic circuit.

Table 2-7. 3.3VDC drive chips & 5VDC drive chips

5VDC 3.3VDC

Motor driver (IC10/11) Reset IC (IC2) EEPROM (IC3) Parallel controller (IC7)

ASIC (IC1) D-RAM (IC4) P-ROM (IC5) Parallel controller (IC7) Common driver (IC19)

CN4

CN7

CN12

CN9

CN8

CN1 Parallel I/F

PF motor

CR motor

Printhead

CN3 USB

CR2

E01A21CB ASIC (IC1)

Motor driver

(IC10)

Motor driver

(IC11)

Common

driver (IC19)

Parallel I/F IC

(IC7)

Q2&Q3

Figure 2-18. Block diagram for the C418 Main/Main-B board

HP/PE sensor

Operating Principles Electrical Circuit Operating Principles 47

EPSON Stylus PHOTO 810/820/830 Revision B

2.2.2.1 Main Elements

Table 2-8 shows the function of the each main elements on C418 Main/Maia-B board.

Table 2-8. Main elements

IC Location Function

CPU E01A21CB (E01A21CA)

DRAM IC4 Bus= 16 bit, 4Mbit DRAM

EEPROM IC3

Reset IC BN6150F-E2

Common Driver E09A29LA

Motor Driver (LB1946-K)

Parallel I/F IC 74LVX1612B4

IC1

IC2

IC19

IC10/IC11 PF/CR motor drive IC

IC7 IEEE1284 parallel I/F transceiver IC.

CPU mounted on the MAI N board is driven by clock frequency 48 MHz, 24MHz and controls the printer.

1kbit EEPROM

• Default value setting

• Parameter backup Reset IC

• For +5V; reset when +4.2V is detected

• For +42V, reset when +36.3 V is detected Head drive control HIC

• Generates head common voltage.

Operating Principles Electrical Circuit Operating Principles 48

EPSON Stylus PHOTO 810/820/830 Revision B

2.2.2.2 Printhead Driver Circuit

The printhead driver circuit consists of the following two components:



Head common driver circuit (Common driver IC19 & Wave amplifier transistor Q2, Q3)



Nozzle selector IC on the printhead driver

The common driver (IC19) generates a basic drive waveform according to the output signals from CPU (IC1). The basic drive waveform is amplified by the transistors Q2 and Q3 (the amplified one is called drive waveform.) and then trans ferred to the n ozzle selector IC on the printhead driver board. Print data is converted to serial data by the CPU and then sent to the nozzle selector IC on the printhead driver board. Based on the serial data, the nozzle selector IC determines the nozzles to be actuated. The selected nozzles are driven by the drive waveforms amplified by the transistor Q2 and Q3. See refer to Figure 2-19 for the printhead driver circuit block diagram.



Head common driver circuit The basic drive waveform is generated in the common driver (IC19) based on the following 12 signal lines output from t he CPU (IC1); A0-A4, CLK1, CLK2, FLOOR, RST, DATA, DCLK, and E. By the DATA signal output from the CPU, the original data for the basic drive waveform is written in the memory in the common driver (IC19). The addresses for the written data are determined by A0-A4 signals. Then, the necessary data is selected from the address and appropriate basic drive waveform is generated. Generated basic drive waveform is transferred to nozzle selector IC on the printhead driver board through the transistor Q2 and Q3 and applied to the nozzle PZT specified by nozzle selector IC.

CPU

(IC1)

HWA0 HWA1 HWA2 HWA3

HWA4 HWCLK1 HWCLK2

HWFLR HWRST

HWSDATA

HWSCLK

HWSLAT

HSOCLK

HCH

HSO1 ~ HSO6

HSOCMD

HLAT

HNCHG

C-P32 C-P13 C-P30 C-P34 C-P12 C-P40

132 133 134 135 136 127 126 125 124 130 129 128 13 12 21 24 19 20 8 11 10 18 9 6

26 25 24 23 22

3 4 5

6 27 28

Common

Driver(IC19)

AO A1 A2 A3 A4 CLK1 CLK2 FLOOR RST DATA DCLK E

VCC45

NPNB

PNPB

+4.2V

15 14

+3.3V

CN9

CN8

15 13

9 2

2 4 8

6 10 11 12 14 15 13

COM COM

SCK CH SI1 ~ SI6 SP

COM VHV LAT NCHG CSCK COI CRST CSDA CVDD THM

Nozzle

Selector IC

Head Drive Pulse



Nozzle selector circuit Printing data is allocated to the six rows (the num ber o f the head nozzle rows) and converted into serial data by the CPU (IC1). Then th e converted data is transferr ed to the nozzle selector IC through the six signals lines (HS01 to HS06). Data

Figure 2-19. Printhead driver circuit

transmission from the CPU to the nozzle selector synchronizes with the LAT signal and SCK clock signal. Based on the transmitted data, appropriate nozzle is selected and the PZTs of the selected nozzle are driven by the drive waveform output from the head common driver.

Operating Principles Electrical Circuit Operating Principles 49

EPSON Stylus PHOTO 810/820/830 Revision B

2.2.2.3 PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit

The motor driver IC (IC10) on the Main board drives PF motor. This product uses 4phase 96-poles hybrid type stepping motor and performs constant current bi-polar drive.

CPU (IC1) transmits LB1946 micro step drive form and the current value data on each phase to motor driver IC (IC10) from port 139. Based on this signal, motor driver IC determines the phase mode.

Motor driver IC generates motor driver waveform based on these input signals and controls the motor. And also, motor driver IC monitors to prevent the fluctuations in the actual current value to motor driver IC. If motor driver IC detects the fluctuations in the actual current value, it amends the current value internally. In case that the printer dose not receive any data for 5 minutes, CPU set the motor drive current to 0 [A] and the motor drive is turned off to save the power consumption.

PF-SCLK

PF-DATA

+5V

CPU (IC1)

PF-LAT

C-P47

C-P25

138 139 140 3

144

23 22 21 27 16 20

24 25 18

LB1946

(IC10)

CLK DATA SET VREF1 VREF2 ST

MD CR1 CR2 E1 E2

OUTA

OUTA-

OUTB

OUTB-

VBB

VCC

7 6 9 8

1 28

CN7

1 3 2 4

+42v

+5V

2.2.2.4 CR Motor Driver Circuit

The motor driver IC (IC11) on the Main board drives CR motor. This product uses 4phase 200-poles hybrid type stepping motor and performs constant current bi-polar drive.

CPU (IC1) transmits LB1946 micro step drive for m and the current value date on each phase to motor driver IC (IC11) from port 142. Based on this signal, motor driver IC determines the phase mode.

Motor driver IC generates motor driver waveform based on these input signals and controls the motor. And also, motor driver IC monitors to prevent the fluctuations in the actual current value to motor driver IC. If motor driver IC detects the fluctuations in the actual current value, it amends the current value internally. In case that the printer dose not receive any data for 5 minutes, CPU set the motor d rive current to 0 [A] and the motor drive is turned off to save the power consumption.

CR-SCLK

CR-DATA

+5V

CPU

(IC1)

CR-LAT

C-P46

C-P25

141 142 143 4

144

23 22 21 27 16 20

24 25 18

LB1946

(IC11)

CLK DATA SET VREF1 VREF2 ST

MD CR1 CR2 E1 E2

OUTA

OUTA-

OUTB

OUTB-

VBB

VCC

CN12

7 6 9 8

1 28

1 3 2 4

+42v

+5V

Figure 2-21. CR motor driver circuit block diagram

Figure 2-20. PF motor driver circuit block diagram

Operating Principles Electrical Circuit Operating Principles 50

EPSON Stylus PHOTO 810/820/830 Revision B

2.2.2.5 Reset Circuit

Reset IC (IC2) on the MAIN board monitors the two voltage: +5V for the logic line and +42V for the drive line. Reset IC outputs the reset signal to CPU (IC1) in the following case.

1. When the printer power is turned on and reset IC detects 4.2V on +5V line/36.3V on +42V line, reset signal is output to perform the initialize operation correctly.

2. When the printer power is turned off and reset IC detects 4.2V on +5V line/36.3V on +42V line, reset signal is output to stop the printer operation safely.

3. When reset IC detects 4.2V on +5V line/36.3V on +42V line with fail during the printer operation, reset signal is output to stop the printer operation safely.

Unlike the previous products, the timer IC is not built in the reset IC and the Lithium battery is not mounted on this Main board either.

+42V

BH6150F-E2

NC1

NC2

GND

IC2

MEWS

VCC OUT1 OUT2

+5V

IC1

E01A24CA

8 7 6 5

37 36

MRES

NMI RESET

2.2.2.6 EEPROM Control Circuit

When the printer power is turned off, the following information is stored in EEPROM (IC3) which is nonvolatile memory. And, when the printer power is on, CPU (IC1) reads the information from EEPROM.

Information stored in EEPROM is listed below.



Various ink counter (I/C consumption counter, waste pad counter, etc.)



Mechanical setting value (Head ID, Bi-D adjustment, USB ID, etc.)

Refer to 7.1.2 that provides the detailed information stored in EEPROM.

42 41 40 39

E01A24CA

(IC1)

C-P20 C-P21 C-P22 C-P23

+5V

EEPROM-93C

(IC3)

VCC

ORG

GND

1 2 3 4

Figure 2-23. EEPROM circuit diagram

EEPROM is connected to CPU with 4 lines and each line has the following function.



Figure 2-22. Reset circuit block diagram

Main line for reset IC has the following function.



OUT1: Interrupt signal



OUT2: Reset line



IN: +42V line monitoring lin e



VCC: +5V line moni toring line

CS: Chip selection signal



CK: Data synchronism clock pulse



DI: Data writing line (serial data) at power off.



DO: Data reading line (serial data) at power on.

Operating Principles Electrical Circuit Operating Principles 51

EPSON Stylus PHOTO 810/820/830 Revision B

2.2.2.7 Sensor Circuit

CPU (IC1) on the Main board monitors the status of the printer by several sensors. However, unlike the previous product, ASF unit on this printer does not have ASF sensor. Instead of ASF sensor, Change lever and the Clutch mechanism is used to detect ASF home position. (As for the ASF home position detection, refer to 2.1.4.)



HP/PE sensor

HP/PE sensor uses photo interrupter method and always monitors the two status during the printer is in the power on status. The photo interrupt component and two detection levers consists of this sensor.



CR home position The CR home position is detected on the right edge of the CR shaft with the HP/PE sensor during the variety sequence. In case that the CR home position is detected, this sensor outputs HIGH signal to the CPU (IC1). If CR home position is not detected in the detection position correctly, this sensor outputs LOW signal to CPU and the printer indicates the error (As for the error indication, refer to 1.4.3.)



Paper top & end position When the Paper is in the paper path during the paper loading/feeding sequence, HP/PE sensor outputs the HIGH signal. When the Paper is not in the paper path, this sensor outputs the LOW signal and the printer indicates the error (As for the error indication, refer to 1.4.3.)



Thermistor (THM)

The thermistor is directly mounted on the printhead driver board. It monitors the temperature around the printhead and determines the proper head drive voltage to uniform the weight of the ink fired from printhead. This information is fed back to the CPU analog port. When the temperature rises, the head driv e circuit lowers the drive voltage: When the temperature lowers, the head drive circuit rises the drive voltage.

IC1

E01A24CA

C-P15

C-P40

+5V

HPPV

HP/PE Sensor

CN4

CN8

Head FFC

GND

HPPE

GND

THM

Figure 2-24. Sensor circuit diagram

The block diagram for the sensor circuit is shown below.

Operating Principles Electrical Circuit Operating Principles 52

EPSON Stylus PHOTO 810/820/830 Revision B



2.2.3 C483/C484 MAIN-B Board

The logic circuit of the C483/C484 Main-B board is composed of the follows;



Logic line (ASIC, DRAM, P-ROM, EEPROM and so no)



Motor control/drive circuit (CR motor/PF motor)



Head control/drive circuit



Interface control circuit (Parallel I/F, USB I/F)



Sensor circuit



Reset/Regulator circuit



EEPROM circuit



Switch circuit



LED circuit

Unlike the previous printer (Stylus COLOR 680), the panel board is eliminated and the switches/LED lights are mounted on the Main board.



The transceiver with USB I/F is built in the CPU.



D-RAM



4M/16Mbit D-RAM is mounted on the Main board.



One ASIC controls the all functions on the Main board. See figure 2-27 for the C483/484 Main-B board block diagram.

D-RAM 4M

(IC1/IC2)

Address

Data

P-ROM

(SOJ) 4M

(IC7)

Reset IC

(IC3)

EEPROM

(IC5)

The printer mechanism is controlled by the above circuits. Following explains the major characteristics of this Main board.



Timer IC & Lithium battery are not mounted Unlike the previous printer (Stylus COLOR 680), the Timer IC and the Lithium battery are not mounted on these Main boards. So, these printers perform the Power-on cleaning or Timer cleaning based on the time command which is sent from the PC through the printer driver. As for the details, refer to 2.1.6.



Use of the 3.3V chips in the logic circuit The 3.3V regulator (IC8) on the C418 Main/Main-B/C429 Main board generates

3.3VDC by pressuring down the 5VDC to drive several chips for the logic circuit.

Table 2-9. 3.3VDC drive chips & 5VDC drive chips

5VDC 3.3VDC

ASIC (IC8)

Motor driver (IC6) Reset IC (IC3) Parallel controller (IC4)

D-RAM (IC1/IC2) P-ROM (IC7) Parallel controller (IC4) Common driver (IC10) EEPROM (IC5)

CN4

CN7

CN12

CN9

CN8

CN1 Parallel I/F

CN3 USB

CR1

E01A21CB CPU (IC1)

Motor Driver

(IC6)

Common

Driver (IC10)

Parallel I/F IC

(IC4)

Q1&Q2

Figure 2-25. Block diagram for the C483/C484 Main-B board

HP/PE Sensor

PF Motor

CR Motor

Head

Operating Principles Electrical Circuit Operating Principles 53

EPSON Stylus PHOTO 810/820/830 Revision B

2.2.3.1 Main Elements

Table 2-10 shows the function of the each main elements on C483/C484 Main-B board.

Table 2-10. Main elements (Stylus C61/C62)

IC Location Function

CPU E01A37**/39**

DRAM IC1/IC2 Bus= 16 bit, 4M/16Mbit DRAM

EEPROM IC5

Reset Regulator IC BN6150F-E2

Common Driver E09A29LA

Motor Driver IC6 PF/CR motor drive IC Parallel I/F IC

SN74LVCZ16128 4AGT

IC8

IC3

IC10

IC7 IEEE1284 parallel I/F transceiver IC.

CPU mounted on the MAIN board is driven by clock frequency 48 MHz, 24MHz and controls the printer.

1kbit EEPROM

• Default value setting

• Parameter backup Reset IC

• For +5V; reset when +4.2V is detected

• For +42V, reset when +35.8V is detected Head drive control HIC

• Generates head common voltage.

Operating Principles Electrical Circuit Operating Principles 54

EPSON Stylus PHOTO 810/820/830 Revision B

2.2.3.2 Printhead Driver Circuit

The printhead driver circuit consists of the following two components:



Head common driver circuit (Common driver IC10 & Wave amplifier transistor Q1, Q2)



Nozzle selector IC on the printhead driver.

The common driver (IC10) generates a basic drive waveform according to the output signals from CPU (IC8). The basic drive waveform is amplified by the transistors Q1 and Q2 (the amplified one is called drive waveform.) and then trans ferred to the n ozzle selector IC on the printhead driver board. Print data is converted to serial data by the CPU and then sent to the nozzle selector IC on the printhead driver board. Based on the serial data, the nozzle selector IC determines the nozzles to be actuated. The selected nozzles are driven by the drive waveforms amplified by the transistor Q1 and Q2. See refer to Figure 2-26 for the printhead driver circuit block diagram.



Head common driver circuit The basic drive waveform is generated in the common driver (IC10) based on the following 12 signal lines output from t he CPU(IC8); A0-A4, CLK 1, CLK2, FLOOR, RST, DATA, DCLK, and E. By the DATA signal output from the CPU, the original data for the basic drive waveform is written in the memory in the common driver (IC10). The addresses for the written data are determined by A0-A4 signals. Then, the necessary data is selected from the address and appropriate basic drive waveform is generated. Generated basic drive waveform is transferred to nozzle selector IC on the printhead driver board through the transistor Q1 and Q2 and applied to the nozzle PZT specified by nozzle selector IC.



Nozzle selector circuit Printing data is allocated to the six rows (the num ber o f the head nozzle rows) and converted into serial data by the CPU (IC8). Then th e converted data is transferr ed to the nozzle selector IC through the six signals lines (HS01 to HS06). Data transmission from the CPU to the nozzle selector synchronizes with the LAT signal and SCK clock signal. Based on the transmitted data, appropriate nozzle is selected and the PZTs of the selected nozzle are driven by the drive waveform output from the head common driver.

CPU

(IC8)

HWA0 HWA1 HWA2 HWA3

HWA4 HWCLK1 HWCLK2

HWFLR HWRST

HWSDATA

HWSCLK

HWSLAT

HSOCMD

HSO3 HSO2 HSO1

HNCHG

HLAT

C-P34 HSO6 HSO5 HSO4

HSOCLK

HCH C-P13 C-P30 C-P12 C-P32 C-P49

+42V

15 14

100 99 98 97 96 107 106 105 104 102 103 108 129 126 127 128 119 118 117 122 123 124 120 121 116 115 114 113 33

26 25 24 23 22

3 4 5

6 27 28

Common

Driver(IC10)

AO A1 A2 A3 A4 CLK1 CLK2 FLOOR RST DATA DCLK E

VCC45

NPNB

PNPB

Figure 2-26. Printhead driver circuit

+3.3V

CN9

CN8

15 13

11 12 15

4 3

7 6

9 6

4 1

COM COM

GND2

SI3 SI2 SI1

SI6 SI5 SI4

SCK

CH NCHG LAT CSDA

COM

VHV

GND2 GND2

CRST

CVDD

CSCK

THM

Nozzle

Selector IC

Head Drive Pulse

COI

Operating Principles Electrical Circuit Operating Principles 55

EPSON Stylus PHOTO 810/820/830 Revision B

2.2.3.3 PF/CR Motor Driver Circuit

CPU

The motor driver IC (IC6) on the Main boar d drives P F/CR mo tor. This pro duct uses 4phase 96-poles HP type stepping motor (PF motor) and 4-phase 200-poles PM type stepping motor. And these motors perform constant current bi-polar drive.

CPU (IC8) transmits A6615 micro step drive form and the current value data on each phase to motor driver IC (IC6) from port 89/92. Based on this signal, motor driver IC determines the phase mode.

Motor driver IC generates motor driver waveform based on these input signals and controls the motor. And also, motor driver IC monitors to prevent the fluctuations in the actual current value to motor driver IC. If motor driver IC detects the fluctuations in the actual current value, it amends the current value internally. In case that the printer dose not receive any data for 30seconds, CPU set the motor drive current to 0 [A] and the motor drive is turned off to save the power consumption. * Unlike the Stylus C50/C60, regulator IC which generates +5VDC is not on the C482 PSH board for the Stylus C61/C62. Instead of the regulator IC, +5VDC is generated on this motor driver IC.

CPU

(IC8)

PF_SCLK

PF_DATA

PF_LAT

CR_SCLK

CR_SCLK CR_DATA

CR_DATA

CR_LAT

C_P47/46

CLK4M

88 89

89 90

90 91

91 92

92 93

93 35,34

35,34 87

+42V

+5V

27,18

6,41

32,33,36

28 30 29

29 40

40 38

38 39

15 31

31 37

37 16

CLK1

STB1

VREF

A6615

(IC6)

OUT1A

OUT1B-

OUT2A

OUT2B-

VREG

24 26 21 19

3 5 44 42

+5V

13 10

CN7

1 3 2 4

CN12

1 3 2 4

Figure 2-27. PF/CR motor driver circuit block diagram

Operating Principles Electrical Circuit Operating Principles 56

EPSON Stylus PHOTO 810/820/830 Revision B

2.2.3.4 Reset Regulator Circuit

Reset IC (IC3) on the main board monitors the two voltage: +5V for the logic line and +42V for the drive line. Reset IC outputs the reset signal to CPU (IC8) in the following case.

1. When the printer power is turned on and reset IC detects 4.2V on +5V line/35.8V on +42V line, reset signal is output to perform the initialize operation correctly.

2. When the printer power is turned off and reset IC detects 4.2V on +5V line/35.8V on +42V line, reset signal is output to stop the printer operation safely.

3. When reset IC detects 4.2V on +5V line/35.8V on +42V line with fail during the printer operation, reset signal is output to stop the printer operation safely.

Unlike the previous products, the timer IC is not built in the reset IC and the Lithium battery is not mounted on this MAIN board either.

+42V

+5V

4 3

12 5

1 7 8 14

IC3

M62510FP

VCC

Vin1 Vin2

GND GND GND GND

VOUT1

VOUT2

VD2

Vres VOUT2 VOUT1

+3.3V

+1.5V

30 29

IC8

E01A37CB

MRES

NMILVL

RESET

2.2.3.5 EEPROM Control Circuit

When the printer power is turned off, the following information is stored in EEPROM (IC5) which is nonvolatile memory. And, when the printer power is on, CPU (IC8) reads the information from EEPROM.

Information stored in EEPROM is listed below.



Various ink counter (I/C consumption counter, waste pad counter, etc.)



Mechanical setting value (Head ID, Bi-D adjustment, USB ID, etc.)

Refer to 7.1.2 that provides the detailed information stored in EEPROM.

136 135 134 133

E01A37CB

(IC8)

C-P20 C-P21 C-P22 C-P23

+.3.3V

EEPROM-93C

(IC5)

VCC

ORG

GND

CS SK

1 2 3 4

Figure 2-29. EEPROM circuit diagram

Figure 2-28. Reset Regulator circuit block diagram

Main line for reset regulator IC has the following function.



VOUT1: Reset line



VOUT2: Interrupt signal



IN: +42V line monitoring lin e



VCC: +5V line moni toring line

EEPROM is connected to CPU with 4 lines and each line has the following function.



CS: Chip selection signal



CK: Data synchronism clock pulse



DI: Data writing line (serial data) at power off.



DO: Data reading line (serial data) at power on.

*Unlike Stylus C50/C60, Stylu s C61/C6 2 does no t have excl usive reg ulator IC which generates +3.3VDC from +5VDC. Instead of the regulator IC, this IC generates +3.3VDC from +5VDC.

Operating Principles Electrical Circuit Operating Principles 57

EPSON Stylus PHOTO 810/820/830 Revision B

2.2.3.6 Sensor Circuit

CPU (IC8) on the Main board monitors the status of the printer by several sensors. However, unlike the previous product, ASF unit on these printers does not have ASF sensor. Instead of ASF sensor, Change lever and the Clutch mechanism is used to detect ASF home position. (As for the ASF home position detection, refer to 2.1.4.)



HP/PE sensor



CR home position The CR home position is detected on the right edge of the CR shaft with the HP/PE sensor during the variety sequence. In case that the CR home position is detected, this sensor outputs HIGH signal to the CPU (IC8). If CR home position is not detected in the detection position correctly, this sensor outputs LOW signal to CPU and the printer indicates the error (As for the error indication, refer to 1.4.3.)





Thermistor (THM)

IC8

E01A37CB

C-P15

C-P40

+3.3V

130

SENV

HP/PE Sensor

CN4

CN8

Head FFC

GND

THM

Figure 2-30. Sensor circuit diagram

The block diagram for the sensor circuit is shown below.

Operating Principles Electrical Circuit Operating Principles 58

TROUBLESHOOTING

CHAPTER

EPSON Stylus PHOTO 810/820/830 Revision B

3.1 Overview

This chapter describes how to identify troubles in two levels: unit level repair and component level repair. Refer to the flowchart in this chapter to identify the defective unit and perform component level repair if necessary. This chapter also explains motor coil resistance, sensor specification and error indication.

START

Unit level troubleshooting

Unit repair

Assemble & Adjustment

END

Table 3-1. Motor, coil resistance

Motor Location Check point Resistance

CR motor CN12

PF motor CN7

Pin 1 and 3 Pin 2 and 4

7.8 Ohms (at 25

6.0 Ohms ±10% *1 (at 25

5.4 Ohms ±10% *2 (at 25

*1 : Stylus Photo 810/820 *2 : Stylus Photo 820/830

Table 3-2. Sensor check point

Sensor name Check point Signal level Switch mode

Off

Less than 0.7V

HP/PE Sensor CN4/Pin 1 and 2

More than 2.4V

• Out of CR home position

• No paper

• Within CR home position

• Detect the paper

10%

C/ phase)

Figure 3-1. Troubleshooting flowchart

Thermistor

(THM)

TH1 (on the Head

driver board)

Analog signal 10 K (at 25 °C)

Troubleshooting Overview 60

EPSON Stylus PHOTO 810/820/830 Revision B

3.2 Troubleshooting with LED Error Indicat ions and Status Monitor 3 Message

This section describes the LED indication, the STM3 message and the error detection condition when the printer detects an error condition in

the power on sequence, the paper loading/feeding sequence, the ink absorption sequence,

Indicators

Printer status

Power Error

Fatal error Off On

each sequence/operation (such as

Table 3-3. Error indication and status monitor 3

Status monitor 3 message Condition for error detection

* : The explanations f or STM3 of the Stylus Photo 820/830 are the same as the Stylus Photo 810 /820 completely except the followings.

1) Printer name

2) Figure of the printer

3) T-code for Bk ink cartridge (Stylus Photo 810/820/830 : T026)

4) T-code for Col. ink cartridge (Stylus Photo 810/820/830 : T027)

This error is detected when ;

1) the CR unit cannot move correctly by the external force in each sequence/operat ion

2) the PF motor cannot rotate correctly while the PF motor operates.

This error is detected when the protection

Maintenance request Alt Blink Alt Blink

counter A stored into EEPROM reaches the limit (32915 points :

830

Stylus Photo 810/820/

Troubleshooting Troubleshooting with LED Error Indications and Status Monitor 3 Message 61

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-3. Error indication and status monitor 3

Printer status

Indicators

Power Error

Paper jam error On On

Paper out error On On

Status monitor 3 message Condition for error detection

This error is detected when ;

1) the end of a paper is not correctly detected with the HP/P E sensor in th e paper feeding sequence.

2) the HP/PE sensor cannot detect that the CR unit moves outside the home position in the CR home position detection sequence.

This error is detected when the top o f a pa per is not detected with the HP/PE sensor in the pape r loading sequence.

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EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-3. Error indication and status monitor 3

Printer status

Power Error

No ink cartridge

(Black and Color)

Ink end error On-> Blink

Indicators

On On

[Bk I/C]

On -> Blink

[Col I/C]

On -> Blink2

Status monitor 3 message Condition for error detection

This error is detected when ;

1) the ink cartridge is not installed to the CR unit.

2) the ink cartridge is defective.

This error is detected when ;

1) the ink consumption amount reaches 100%

2) the ink cartridge is defective.

[Note] The slight amount of the ink is remaining in the I/C even if the ink end error is detected. This is to prevent the Printhead nozzle from the printing operation without firing the ink.

" A -> B " : A is a indicator condition when the CR unit is in the home position. B is a indicator condition in the ink replacement sequence. Blink : On 0.5sec + Off 0.5sec Blink2 : On 0.2sec + Off 0.2sec + On 0.2sec + Off 0.4s ec

Troubleshooting Troubleshooting with LED Error Indications and Status Monitor 3 Message 63

Stylus Photo 720 Revision B

Table 3-3. Error indication and status monitor 3

Printer status

Power Error

Ink low condition On-> Blink

Indicators

[Bk I/C]

Blink -> Blink

[Col I/C]

Blink -> Blink2

Status monitor 3 message Condition for error detection

This error is detected when the ink consumption amount reaches about 90%.

[Note] When the ink low condition is detected, Error

reset LED is blinking. The printer continue to keep this LED status even if brand new ink cartridge is installed at the I/C replacement position.

Then, when the CR unit returns to the home position, this LED status is reset (LED is off).

Note : Even if this error is indicated on the STM3, you can continue the printing until I/C becomes ink end condition. However, the head cleaning operation cannot be done so that the remaining ink is low condition.

Communication err or Off Off

This error is detected when the printer cannot communicate with the PC correctly.

Troubleshooting Troubleshooting with LED Error Indications and Status Monitor 3 Message 64

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-3. Error indication and status monitor 3

Printer status

Error before the ink

replacement CL

Error before the

initial ink charge

Indicators

Power Error

On On

Status monitor 3 message Condition for error detection

This error is detected when the 2nd or more ink cartridge for the ink replacement CL is defective.

This error is detected when the 1st ink ca rtridge for the initial ink charge is defective.

Troubleshooting Troubleshooting with LED Error Indications and Status Monitor 3 Message 65

EPSON Stylus PHOTO 810/820/830 Revision B

3.3 Unit Level Troubleshooting

You can identify the troubles by using the checklist in this section after confirming the LED indication on the printer. If you connect the printer to your PC and see an error message on the STM3, you can short the total repair time. And, when you find out the defective parts, replace them by referring the Chapter 4 “Disassembling”. Following tables describe the error condition (LED and STM3), possible cause and check point.

Table 3-4. Fatale error condition and possible cause

Error condition

Fatal error

LED indication STM3 message

Power : Off

Error : On

General error

Occurrence

timing

Power on

CR position at the

power on timing

Outside HP

unit/part name

Holder sh aft unit The Paper return plate disturbs the rotation of the LD roller.

Paper guide upper/le ft The Paper guide upper/left comes off completely .

The following is the example of how to use the table. When the CR unit is out of the home position at the power on timing, the fatal error may be caused by the failure of the CR motor. Moreover, there are 3 pos sible causes on the CR motor failure.

[Note] When the individual part of the Paper eject roller, PF motor and the Ink system unit is defective, replace the Printer mechanism to new one basically. However, if the individual part is replaced to new one in the urgent case,

reassemble it carefully by referring to Chapter 4.

Defective

CR motor

PF motor

The CR motor connector cable comes off. The CR motor is defective. The CR motor connecto r cable is damaged.

The PF motor connector cable comes off. The PF motor is defective. The PF motor connector cable is damaged.

Possible cause Check table

Refer to Table 3-5

disassembly/

Pump unit The Compression spring 1.764 comes off.

Anywhere

Operation -

Main board The Main board is defective. Main frame The Main frame is deformed. Front frame The Front frame is bent up. Main frame The Main frame is deformed.

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EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-5. Check point for the fatal error according to each phenomenon

Occurrence

timing

CR position

Power on

Outside HP

Detailed phenomenon

When turning on the power, the CR motor does not operate at all.

When turning on the power, the CR unit collides to the Change lever located to the front si de of the printer.

Defective

unit/part name

CR motor

Holder shaft unit

PF motor

Pump unit

Check point Remedy

1. Check if the CR motor connector cable is connected to CN12 on the Main board.

2. Check if the coil resistance of the CR motor is about 7.8

ohm by using the tester. Refer to Table 3-1.

3. Check if the CR motor connector cable is damaged.

1. Check if the Paper return plate disturbs the rotation of the LD roller.

LD roller

Paper return plate

1. Check if the PF motor connector cable is connected to CN7 on the Main board.

2. Check if the coil resistance of the PF motor is about 6.0

ohm by using the tester. Refer to Table 3-1.

3. Check if the PF motor connector cable is damaged.

1. Check if the Compression spring 1.76 4 co m es off in t he Change lever.

Change lever

1. Connect the CR motor connector cable to CN12 on the Main board.

2. Replace the CR motor with new one.

3. Replace the CR motor with new one.

1. Reassemble the ASF unit to the printer.

1. Connect the PF motor connector cable to CN7 on the Main board.

2. Replace the Printer mechanism with new one.

3. Replace the Printer mechanism with new one.

1. Replace the Printer mechanism with new one.

Comp. sprin g 1.764

When turning on the power, the CR unit collides to the Paper guide upper lo cated on the Lower housing.

1. Check if the Paper guide upper/left comes off from the Main frame.

Paper guide upper/

left

1. Reassemble the Paper guide upper/left to the Main frame.

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EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-5. Check point for the fatal error according to each phenomenon

Occurrence

timing

CR position

Power on

Anywhere

Operation

Error condition

Detailed phenomenon

When turning on the power, the CR unit collides to the right side of the Main frame.

The CR unit climbs over the Slider lock lever set to the wiping position and the CR unit collides to its lever.

LED indication STM3 message

Occurrence

timing

Defective

unit/part name

Main frame

Front frame

1. Check if the CR home position is correctly detected with the HP/PE sensor.

1. Check if the Slider lock lever is correctly released by the CR movement.

Check point Remedy

Table 3-6. Paper jam error condition and possible cause

CR position at the

power on timing

Inside HP

Unit/Part name Possible cause Check table

The CR motor connector cable comes off.

CR motor

Holder sh aft unit The Paper return plate disturbs the rotation of the LD roller.

PF motor

The CR motor is defective. The CR motor connecto r cable is damaged.

The PF motor connector cable comes off. The PF motor is defective.

1. Replace the Printer mechanism with new one. * If the problem is not solved, replace the Main board with new one.

1. Replace the Printer mechanism with new one.

1. Replace the Front frame with new one.

The PF motor connector cable is damaged.

Refer to Table 3-7

The Torsion spring 0.22 for PE sensor lever comes off. The Torsion spring 0.22 for HP sensor lever comes off. The HP/PE sensor is defective. The HP/PE sensor cable comes off. The HP/PE sensor cable is damaged. The HP/PE sensor cable is not placed correctly.

Paper jam error

Power : On

Error : On

Paper jam

Power on

Pump unit The Compression spring 1.764 comes off.

ASF unit The Compression spring 29.1comes off.

Anywhere

LD roller unit

Troubleshooting Unit Level Troubleshooting 68

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-6. Paper jam error condition and possible cause

Error condition

Paper jam error

Occurrence

timing

CR position

Power on Inside HP

LED indication STM3 message

Power : On

Error : On

Paper jam

Occurrence

timing

Operation

Table 3-7. Check point for the paper jam error according to each phenomenon

Detailed phenomenon

When turning on the power, the CR unit does not operate at all.

When turning on the power, the CR unit collides to the Change lever located to the front si de of the printer.

CR position at the

power on timing

Outside HP Hold er shaft u n it

Defective

unit/part name

CR motor

Holder shaft unit

Unit/Part name Possible cause Check table

ASF unit The Compression spring 29.1comes off.

Front frame

Holder sh aft unit The Torsion spring 0.22 for PE sensor lever comes off.

Lower housing The porous pad for the “no margin” printing comes off.

Paper eject roller unit

Paper guide upper/le ft The Paper guide upper/left comes off completely .

1. Check if the CR motor connector cable is connected to CN12 on the Main board.

2. Check if the coil resistance of the CR motor is about 7.8

ohm by using the tester. Refer to Table 3-1.

3. Check if the CR motor connector cable is damaged.

1. Check if the Paper return plate disturbs the rotation of the LD roller.

The Torsion spring 0.22 for HP sensor lever comes off. The HP/PE sensor cable is not placed correctly.

The Star wheel comes off. The Front frame is bent down. The Front frame is not assembled correctly.

The Paper eject roller shaft comes off. * The Spur gear 60 comes off.

Check point Remedy

1. Connect the CR motor connector cable to CN12 on the Main board.

2. Replace the CR motor with new one.

3. Replace the CR motor with new one.

1. Reassemble the ASF unit to the printer.

LD roller

Paper return plate

Refer to Table 3-7

Troubleshooting Unit Level Troubleshooting 69

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-7. Check point for the paper jam error according to each phenomenon

Occurrence

timing

CR position

Power on Inside HP

Power on

Anywhere

Detailed phenomenon

When turning on the power, the CR unit collides to the Change lever located to the front si de of the printer.

When turning on the power, the paper feeding sequence is performed without loading a paper in the paper loadin g sequence.

Defective

unit/part name

PF motor

Pump unit

ASF unit

Check point Remedy

1. Check if the PF motor connector cable is connected to CN7 on the Main board.

2. Check if the coil resistance of the PF motor is about 6.0

ohm by using the tester. Refer to Table 3-1.

3. Check if the PF motor connector cable is dama ged.

1. Check if the Compression spring 1.764 comes off in the Change lever.

Change lever

Comp. sprin g 1.764

1. Check if the Paper return plate operates correctly in the paper loading sequen ce.

1. Check if the Torsion spring 0.22 comes off on the both HP sensor lever and PE sensor lever.

1. Connect the PF motor connector cable to CN7 on the Main board.

2. Replace the Printer mechanism with new one.

3. Replace the Printer mechanism with new one.

1. Replace the Printer mechanism with new one.

1. Reassemble the Tension spr ing 29.1 between the ASF frame and the Paper return plate.

Torsion spring 29.1

1. Set the Torsion spring 0.22 to the suitable position of the both levers.

Torsion sprig 0.22

Holder shaft unit

2. The HP/PE sensor is defective.

3. Check if the HP/PE sensor cable comes off.

4. Check if the HP/PE sensor cable is damaged.

5. Check if the HP/PE sensor cable is correctly placed on the LD shaft holder.

2. Replace the Holder shaft unit with new one.

3. Replace the Holder shaft unit with new one.

4. Replace the Holder shaft unit with new one.

5. Replace the Holder shaft unit with new one.

Troubleshooting Unit Level Troubleshooting 70

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-7. Check point for the paper jam error according to each phenomenon

Occurrence

timing

CR position

Operation

Outside HP

Operation

Detailed phenomenon

When turning on the power, the CR unit move to the home position correctly. But, the paper feeding sequence is performed without load ing a paper in the paper loading sequence.

When a top of a paper at the correct timing during the paper load ing sequence, the paper is ejected immediately without setting the paper setting position for printing. But, in this time, next paper is loaded to the PE detection lever.

The top of a paper does not go through between the Paper eject roller and the Star wheel.

A paper is loaded from the ASF unit, and it is fed correctly. But, the pape r fee din g sequence is performed without loading a paper from the next paper loading sequence.

Defective

unit/part name

Holder shaft unit *

ASF unit

Front frame **

Lower housing

Paper eject roller

unit **

Holder shaft unit

Check point Remedy

1. Check if the Torsion spring 0.22 for the HP sensor lever

comes off.

2. Check if the HP/PE sensor cable is correctly placed on the LD shaft holder.

1. Check if the Paper return plate operates correctly in the

paper loading sequen ce.

1. Check if the Star wheel comes off.

2. Check if the Front frame is bent down.

3. Check if the Front frame is correctly assembled.

1. Check if the porous pad in the Lower housing comes off. 1. Reassembly the porous pad correctly.

1. Check if the Paper eject roller shaft is correctly

assembled.

2. Check if the Spur gear 60 comes off.

Spur gear 60

1. Check if the Torsion spring 0.22 for the PE sensor lever

comes off.

1. Set the Torsion spring 0.22 to the suitable position of the HP sensor lever.

2. .Place the HP/PE sensor cable correctl y.

1. Reassemble the Tension spr ing 29.1 between the ASF frame and the Paper return plate.

Torsion spring 29.1

1. Reassemble the Star wheel correctly.

2. Replace the Front frame with new one.

3. Reassemble the Front frame correctly.

1. Reassemble the Paper eject roller shaft to the Lower housing correctly.

2. Replace the Printer mechanism with new one.

* The left figure is the Paper eject roller unit for the Stylus C50/C60/C61/C62. Different from the plastic shaft for the Stylus C50/ C60/C61/C62, The one for Stylus Photo 810/820 is metal shaft. However, Stylus Photo 820/830 has also plastic shaft.

1. Set the Torsion spring 0.22 for the PE sensor lever to the suitable position.

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EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-7. Check point for the paper jam error according to each phenomenon

Occurrence

timing

CR position

Operation

* The CR unit can move to home position even if the Tension spring 0.22 comes off or the HP/PE sensor is not correctly placed. However, the HP detection lever keeps the high signal condition in the next operation. Therefore, the paper jam error is detected. ** In case that the paper jam error occurs in each operation, the jammed paper contacts the nozzle surface of the Printhead and the Pri nthead may be damaged.

The top of a paper is not loaded to th e PF roller.

Detailed phenomenon

Defective

unit/part name

Paper guide upper/

left **

Check point Remedy

1. Check if the Paper guide upper/left is correctly assembled.

1. Reassemble the Paper guide upper/left to the Main frame correctly.

Table 3-8. Paper out error condition and possible cause

Error condition

LED indication STM3 message

Occurrence

timing

CR position at the

power on timing

Unit/Part name Possible cause Check table

The Compression spring 2.50 comes off.

ASF unit

The Tension spring 29.1 comes off. The Tension spring 0.143 comes off. The Dowel in Clutch comes off. The Clutch tooth is damaged. The Clutch is damaged.

Refer to Table 3-9

The friction of the LD roller is lowered. The Paper return plate disturbs the rotation of the LD roller.

The PF motor connector cable comes off. The PF motor is defective. The PF motor connector cable is damaged.

Paper out error

Power : On

Error : On

Paper not loaded

correctly

Holder sh aft unit

Operation -

Paper guide upper/le ft The Paper guide upper (only HP side) comes off.

PF motor

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EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-8. Paper out error condition and possible cause

Error condition

Paper out error

Occurrence

timing

CR position

Operation

LED indication

STM3 message

Power : On

Error : On

Paper not loaded

correctly

Occurrence

timing

Operation - Pump unit

Table 3-9. Check point for the paper out error according to each phenomenon

Detailed phenomenon

The Hopper does not operate during the paper loading sequence although the LD roller rotates to load a paper from ASF unit.

When a top of a paper at the correct timing during the paper load ing sequence, the paper is ejected immediately without setting the paper setting position for printing.

CR position at the

power on timing

Defective

unit/part name

ASF unit

Unit/Part name Possible cause Check table

The Compression spring 1.764 comes off.

The tip of the Change lever is damaged.

Check point Remedy

1. Check if the Hopper operates correctly in the paper loading sequence.

1. Check if the Paper return plate operates correctly in the paper loading sequen ce.

1. Reassemble the Compression spring 2.50 between the ASF frame and the Hopper.

Comp. Spring 2.50

1. Reassemble the Tension spr ing 29.1 between the ASF frame and the Paper return plate.

Torsion spring 29.1

Refer to Table 3-9

Troubleshooting Unit Level Troubleshooting 73

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-9. Check point for the paper out error according to each phenomenon

Occurrence

timing

CR position

Operation

Detailed phenomenon

The LD roller does not attempt to load a paper during the paper loading sequence although the PF motor and the Spur gear 60 rotate. (But, the drive of the PF motor is not transmitted to the LD roller shaft.)

Defective

unit/part name

Holder shaft unit

Paper guide upper/

left

Pump unit

Check point Remedy

1. Check if the Tension spring 0.143 comes off in the Clutch mechanism.

2. Check if the Clutch comes off from the dowel of the LD

roller shaft.

3. Check if the Clutch tooth is damaged.

Tension spring 0.143

Clutch tooth

Dowel of the LD roller

4. Check if the Clutch is damage.

1. Check if the Paper guide upper (only HP side) comes off from the Main frame.

1. Check if the Compression spring 1.764 comes off in the Change lever.

Change lever

Comp. sprin g 1.764

1. Reassemble the Torsion spring 0.143 in the Clutch mechanism.

2. Reassemble the round portion of the Clutch

on the dowel of the LD roller shaft.

3. Replace the Holder shaft unit with new one.

4. Replace the Holder shaft unit with new one.

1. Reassemble the Paper guide upper to the Main frame.

1. Replace the Printer mechanism with new one.

The LD roller is not set to t he ASF h ome position and a paper is always loaded from ASF unit during the paper loading sequence.

Pump unit

1. Check if the tip of the Change lever is damaged. 1. Replace the Printer mechanism with new one.

Troubleshooting Unit Level Troubleshooting 74

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-9. Check point for the paper out error according to each phenomenon

Occurrence

timing

CR position

Operation

Detailed phenomenon

The LD roller does not attempt to load a paper during the paper loading se quence. And also, the PF motor and the Spur gear 60 does not rotate at all.

The LD roller cannot pick up a paper although the LD roller attempt to rotate correctly.

Defective

unit/part name

Holder shaft unit *

PF motor *

Holder shaft unit

Check point Remedy

1. Check if the Paper return plate disturbs the rotation of the LD roller.

LD roller

Paper return plate

1. Check if the CR motor connector cable is connected to CN7 on the Main board.

2. Check if the coil resistance of the CR motor is about 6.0

ohm by using the tester. Refer to Table 3-1.

3. Check if the CR motor connector cable is damaged.

1. Check if the any paper dust is adhered to the surface of the LD roller.

LD roller

1. Reassemble the ASF unit to the printer.

1. Connect the PF motor connector cable to CN7 on the Main board.

2. Replace the PF motor with new one.

3. Replace the PF motor with new one.

1. Set a cleaning sheet in the ASF up side down. Then holding the top edge, try to load the paper from the Printer driver. The micro pearl on the LD roller surface is remove d. To remove severe smear, staple a cloth moistened with alcohol to a post card and clean the roller in the same manner.

Non-adhesive A rea

CL Sheet

Adhesive Area

This side down

(Use a post card for the base sheet)

Staplers

Cloth mois t ened with alcohol

*If the problem is not solved, replace the Holder shaft unit with new one.

* When the Change lever is at the backside of the printer at power on timing, the printer can moves to the stand-by mode even if the PF motor does not rotate.

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EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-10. Communication error condition and possible cause

Error condition

Communication

error

Occurrence

timing

CR position

Power on

Anywhere

Operation

LED indication STM3 message

Power : Off

Error : Off

Communication er ror

Occurrence

timing

Power on Anywhere

Operation -

Table 3-11. Check point for the communication error according to each phenomenon

Detailed phenomenon

When turning on the power, the printer does not operate at all.

When turning on the power, the power on sequence is performed correctly. But, when any printer job is sent to printer, the communication error is indi cated with STM3.

CR position at the

power on timing

Defective

unit/part name

Power supply

board

Main board

Parallel/USB cable

Printer driver

Unit/Part name Possible cause Check table

Main board The Main board is defective.

The Power supply connector cable comes off.

Power supply board

Main board

Parallel cable

Printer driver The suitable printer driver is not installed into the PC.

1. Check if the Power supply connector cable is connected to CN2 on the Main board.

2. Check if the Power supply connector cable is damaged.

1. Check if the incorrect model name is stored into the 5F<H> address of the EEPROM on the Main board.

1. Check if the Parallel/USB cable is connected between the printer and the PC.

1. Check if the Stylus Photo 810/820/830 printer driver is used for the printer job.

The Power supply connector cable is damaged. The Power supply board is defective. The incorrect data is stored into the specific address of the

EEPROM. The parallel cable does not support the bi-directional

transportation.

Check point Remedy

1. Connect the Power supply connector cable to CN2 on the Main board.

2. Replace the Power supply board with new one.

* If the problem is not solved, replace the Main board with new one.

1. Write the 00<H> data into the 5F<H> address of the EEPROM by using the Dump eve. program in the Adjustment program.

1. Connect the Parall el /USB cabl e to the prin ter and the PC.

1. Install the Stylus Photo 810/820/ 830 printer driver in the PC.

Refer to Table 3-11

Troubleshooting Unit Level Troubleshooting 76

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-12. Error condition before the initial ink charge/the I/C replacement CL and possible cause & Ink out error and possible cause

Error condition

Error before the

initial ink charge is

performed

Error before the ink

replacement CL is

performed

Ink out error

* The above LED indication timing is at the CR home position. When the CR unit moves to the I/C replacement position with the I/C replacement sequence, this indication will change to blink condition.

LED indication *

STM3 message

Power : On

Error : On

Incorrectly installed

cartridge

Power : On

Error : On

Installed ink cartridge

cannot be recognized

Power : On

Error : On

Black & Color ink

cartridge not installed

Power : On

Error : On

Black & Color ink out

Occurrence

timing

Power on

CR position at the

power on timing

Inside HP

Anywhere

Unit/Part name Possible cause Check table

Ink cartridge The 1st ink cartridge is defective.

Main board

Ink cartridge

The incorrect data is stored into the specific address of the EEPROM.

2nd or more ink cartridges is defective.

The ink cartridge is compatible or counterfeit one.

Refer to Table 3-13

The ink cartridge is defective.

The ink cartridge is compatible or counterfeit one.

The ink amount in I/C is end condition.

The ink cartridge is defective.

Table 3-13. Check point for the error before the initial ink charge according to each phenomenon

Occurrence

timing

CR position

Power on Inside HP

Detailed phenomenon

The printer does not perform the initial ink charge and the error is indicated with LEDs and STM3.

Defective

unit/part name

Ink cartridge

Main board

Check point Remedy

1. Check if the ink cartridge can be used by install it to other printer.

1. Check if the incorrect data is stored into the 3C<H> address of the EEPROM on the Main board.

1. Replace the ink cartridge with the brand-new one.

1. Write the 9E<H> data into the 3C<H> address of the EEPROM by using the Dump exe. program in the Adjustment program.

Troubleshooting Unit Level Troubleshooting 77

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-13. Check point for the error before the initial ink charge according to each phenomenon

Occurrence

timing

CR position

Power on

Anywhere

Error condition

Multiple papers

are always loaded

Occurrence

timing

CR position

Operation

Detailed phenomenon

The printer does not perform the ink replacement CL and the error is indicated wit h LEDs and STM3.

The printer does not perform the printi ng operation and the error is indicated with LEDs and STM3.

Table 3-14. Multiple papers are always loaded without LEDs and STM3

LED indication STM3 message

Power : -

Error : -

No appear

Occurrence

timing

Operation - ASF unit The Tension spring 29.1 comes off. Refer to Table 3-15

Table 3-15. Check point for multiple papers are always loaded without LEDs and STM3

Detailed phenomenon

Any error condition is not indicated with the LEDs and STM3. But, multiple papers are always loaded from ASF unit.

Defective

unit/part name

Ink cartridge

CR position at the

power on timing

Defective

unit/part name

ASF unit

Check point Remedy

1. Check if ink cartridge can be used by install it to other printer.

1. Check if the ink is remaining in the I/C.

2. Check if the ink cartridge can be used by install it to other

printer.

Unit/Part name Possible cause Check table

Check point Remedy

1. Check if the Paper return plate operates correctly in the paper loading sequen ce.

1. Replace the ink cartridge with brand-new one.

2. Replace the ink cartridge with brand-new

one.

1. Reassemble the Tension spr ing 29.1 between the ASF frame and the Paper return plate.

Torsion spring 29.1

Troubleshooting Unit Level Troubleshooting 78

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-16. Abnormal noise

Error condition

Abnormal noise

Occurrence

timing

CR position

Anywhen

Anywhere

LED indication

STM3 message

Power : -

Error : -

No appear

Detailed phenomenon

The abnormal noise occurs at the first power on timing and during each operation although the printing operation is performed.

The bottom of the C R unit contacts the surface of the Front frame.

The CR unit collides to the Paper guide upper/left durin g each operation.

Occurrence

timing

Anywhen Anywhere

CR position at the

power on timing

Unit/Part name Possible caus e Check table

CR unit The lubrication amount of the gr ease is insufficient.

The Front frame is bent up.

Front frame

The lubrication amount of the grease is insufficient.

Paper guide upper/left The Paper guide upper/left co mes off.

Pump unit The Change lever is not moved smoothly.

Table 3-17. Check point for the abnormal noise

Defective

unit/part name

CR unit

Front frame

Pump unit

Front frame

Paper guide upper/

left

1. Check if the grease on the CR guide shaft is sufficient. 1. Wipe off the remaining grease on the CR

1. Check if the grease on the Front frame is sufficient. 1. Wipe off the remaining grease on the Front

1. Check if the Change lever moves smoothly. 1. Replace the Printer mechanism with new one.

1. Check if the Front frame is bent up. 1. Replace the Front frame with new one.

1. Check if the Paper guide upper/left comes off from the Main frame.

Check point Remedy

Refer to Table 3-17

guide shaft and lubricate it on its shaft.

frame and lubricate it on its frame.

1. Reassemble the Paper guide upper/left to the Main frame.

Troubleshooting Unit Level Troubleshooting 79

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-18. Poor printing quality

Error condition

Poor printing

quality

Occurrence

timing

Operation -

CR position at the

power on timing

Phenomenon Unit/Part name Possible cause Check table

The seal rubber portion of the Cap has any foreign materia l or any damage.

The spring unde r t he Ca p co m es off. The Pump tube comes off from the bottom of the Cap.

Cap unit

The Extension spring 0.523 (for the Slider cap) comes off.

Dot missing

No printing

Misalignment

Mixed color

Ink cartridge The ink amount in I/C is end condition.

Main board The Main board is defective.

Printhead

CR motor The accuracy of the CR motor is lowered.

The Extension spring 0.383 (for th e Slider lock lever) come s off.

The Slider lever is damaged.

The Printhead has any foreign m ate rial on the n ozz le surfa ce. The Printhead is defective. The Head FFC is damaged.

The CR guide shaft has any stain or any damage.

Refer to Table 3-19

The lubrication amount of the grease is insufficient. The Torsion spring for the CR guide shaft comes off. The both I/C is not hold by the I/C cover securely. The lubrication amount of the grease is insufficient. The Front frame is bent up or down.

Vertical banding

against the CR

movement direction

CR unit

Front frame

Printhead Each segment is printed correctly in the nozzle check pattern.

Troubleshooting Unit Level Troubleshooting 80

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-18. Poor printing quality

Error condition

Poor printing

quality

Occurrence

timing

Operation -

CR position at the

power on timing

Phenomenon Unit/Part name Possible cause Check table

Lower housing The porous pad for the “n o margin” printing co mes off.

PF motor The accuracy of the PF motor is lowered.

Horizontal banding

against CR movement

direction

Star wheel mark

Insufficient top margin LD roller unit The friction of the LD roller is lowered.

Ink Blur

PF roller unit

Printer driver The printer driver setting is not suitable.

Printhead Each segment is printed correctly in the nozzle check pattern.

Front frame

Paper eject roller unit The Paper eject roller shaft comes off.

Printer driver The printer driver setting is not suitable.

Printhead The Head ID is not input correctly.

Front frame

The PF roller has any foreign material. The PF roller is d am a ge d The Spur gear 60 is damaged.

The Front frame is bent down. The Star whee l comes off.

Refer to Table 3-19

The Front frame has the ink stain somewhere. The Front frame is bent up.

Lower housing

Ink stain

Wrinkle ASF unit The Hopper pad/LD pad is correctly not pasted on the dent.

Paper eject roller unit

Paper guide up per/left The Paper guid e upper/left has ink stain somewhere.

PF roller unit The PF roll er ha s in k s tain somewher e.

Printhead

The Lower housing has the ink stain somewhere. The porous pad for the “no margin” printing comes off. The Paper eject roller has ink stain somewhere. The Spur gear 60 comes off.

The Printhead has the ink drop on the nozzle surface. The Printhead cover has the ink drop.

Troubleshooting Unit Level Troubleshooting 81

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-19. Check point for the poor printing quality

Occurrence

timing

CR position

Operation

Detailed phenomenon

[Phenomeno n 1] In the CL sequence, the Pump unit seems to work correctly. But, the ink is not ejected to the Waste drain ink pad at all.

Moreover, any ink is not absorbed from the Printhead to the cap.

[Phenomeno n 2] In the CL sequence, the ink is ejected to

the Waste drain ink pad (this means the Pump unit & the Cap unit works correctly). But, the dot missing is not solved at the specific nozzles even if the several CLs are performed.

[Phenomeno n 3] In the CL sequence, the ink is ejected to the Waste drain ink pad (this means the Pump unit & the Cap unit works correctly). But, the wiping operation is not performed correctly and the colors are mixed.

Defective

unit/part name

Cap unit

Check point Remedy

1. Check if there is any foreign material around the seal rubber parts on th e Cap unit.

Seal rubber portion

2. Check if any damage is observed around the seal rubber

parts on the Cap uni t.

3. Check if the Compression spring is assembled in the Cap

unit correctly.

Compression spring

4. Check if the Pump tube is connected to th e bottom of the

Cap unit correctly

1. Remove the foreign material around the seal rubber parts carefully.

* The left figure is the cap for Stylus C20. The function of the Cap unit is the same although the cap size is different between Stylus C20 and Stylus Photo 810/820.

2. Replace the Printer mechanism with new one.

3. Replace the Printer mechanism with new one.

4. Replace the Printer mechanism with new one.

[Phenomeno n 4] In the CL sequence, the ink is ejected to the Waste drain ink pad. But, the dot missing occurs on the several nozzle in the printing.

[Phenomeno n 5] In the CL sequence, the ink is ejected to the Waste drain ink pad. But, the missing point (dot missing nozzle) is changed in

5. Check if the Extension spri ng 0.523 comes off from the Slider cap.

6. Check if the Extension spri ng 0.383 comes off from the Slider lock lever.

Exp. spring 0.383

Pump tube

connection point

Exp. spring 0.523

5. Reassemble the Extension spring 0.523 correctly.

6. Reassemble the Extension spring 0.383 correctly.

every CL operation.

Troubleshooting Unit Level Troubleshooting 82

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-19. Check point for the poor printing quality

Occurrence

timing

CR position

Operation

Detailed phenomenon

[Phenomeno n 6] In the CL sequence, the ink is ejected to the Waste drain ink pad. But, dot missing/misalignment occurs on all nozzle in the printing and is not solved in the several CLs.

* If the problem solved, repl ace th e Main board with new one.

Vertical banding appears against the CR movement direction. And, it looks like uneven printing.

CR movement

direction

Defective

unit/part name

Cap unit

Ink cartridge

Printhead

CR unit

Check point Remedy

7. Check if the Slider lock lever is damaged. 7. Replace the Printer mechanism with new one.

1. Check if the ink is remaining in the I/C. 1. Replace th e in k cartridge with brand-new

one.

1. Check if there is any foreign material on the nozzle

surface of the Printhead.

2. Check if the Head FFC is connected to the CN4 on the

Main board or Head FFC.

3. Check if the Head FFC is doggo ned.

4. Check if each segment is printed correctly in the nozzle

check pattern.

1. Check if there is any foreign material on the surface of the

CR guide shaft.

2. Check if any damage is observed on the surface of the CR

guide shaft.

3. Check if the grease is enough on the surface of the CR

guide shaft.

G-58 lubrication

1. Perform the wiping operation.

2. Connect the Head FFC securely to the CN4 on the Main board or Printhea d.

3. Replace the Head FFC with new one.

4. Perform the printhead cleaning and check the nozzle check pattern. If the problem is not solved, replace the printhead with new one.

1. Remove the foreign material around the seal

rubber parts carefully.

2. Replace the CR guide shaft with new one.

3. Clean the surface of the CR guide shaft with the dry soft clot h and lubricate G-5 8 on its shaft. Refer to Figure 6-4.

[Note] If the problem is not solved, replace the CR motor with new one.

4. Check if the CR guide shaft is correctly set by the CR guide shaft rod springs to the Main frame.

5. Check if the ink cartridge is fixed by the ink cartridge cover.

4. Reassemble the CR shaft guide correctly.

5. Replace the ink cartridge cover with new one.

Troubleshooting Unit Level Troubleshooting 83

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-19. Check point for the poor printing quality

Occurrence

timing

CR position

Operation

Detailed phenomenon

Vertical banding appears against the CR movement direction. And, it looks like uneven printing.

Micro banding appears horizontally against the CR move m e nt dire c tio n and it appears with the same width.

CR movement

direction

[Note] If the problem is not solved, replace the PF motor with new one.

Defective

unit/part name

Front frame

Printhead

PF roller unit

Printer driver & exclusive paper

Printhead

Check point Remedy

1. Check if the grease is enough on the surface of the

Front frame.

G-58 lubrication

2. Check if the surface of the Front frame is flat.

1. Check if each segment is printed correctly in the nozzle

check pattern.

1. Check if there is any foreign material on the surface of the

PF roller.

2. Check if the PF roller is damaged

3. Check if the Spur gear 60 is damaged.

1. Check if the suitable paper is used according t o t he p rinte r

driver setting.

1. Check if each segment is printed correctly in the nozzle

check pattern.

1. Clean the surface of the Front frame with the dry soft cloth and lubricate G-58 on its shaft. Refer to Figure 6-6/Figure 6-7.

2. Replace the Front frame with new one.

1. Perform the printhead cleaning and check the nozzle check pattern. If the problem is not solved, replace the printhead with new one.

1. Clean the surface of the PF roller carefully with the soft cloth.

2. Replace the Printer mechanism with new one.

3. Replace the Printer mechanism with new one.

1. Use the suitable paper according to the prin ter driver setting.

1. Perform the printhead cleaning and check the nozzle check pattern. If the problem is not solved, replace the printhead with new one.

Troubleshooting Unit Level Troubleshooting 84

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-19. Check point for the poor printing quality

Occurrence

timing

CR position

Operation

Detailed phenomenon

Banding * appears ho rizontally against the CR movement dire c tio n.

* This banding is caused by the overlap of the printing path

Star wheel mark against the CR movement direction

Defective

unit/part name

Lower housing

Front frame

Paper eject roller

unit

Check point Remedy

1. Check if the porous pad in the Lower housing comes off. 1. Reassembly the porous pad correctly.

1. Check if the Star wheel comes off.

2. Check if the surface of the Front frame is flat.

1. Check if the Paper eject roller comes off from the Lower housing.

1. Reassemble the Star wheel correctly.

2. Replace the Front frame with new one.

1. Reassemble the Paper eject roller correctly.

The printing operation is correctly performed. But, the top margin is insufficient than usual one.

Printing is blurred.

LD roller unit

Printer driver & exclusive paper

Printhead

1. Check if the any paper dust is adhered to the surface of the LD roller.

LD roller

1. Check if the suitable paper is used according t o t he p rinte r driver setting.

1. Check if the correct Head ID is stored into the EEPROM by using the Adjustment program.

*If the problem is not solved, replace the Holder shaft unit with new one.

1. Use the suitable paper according to the prin ter driver setting.

1. Input 11 digits code of the Head ID into the EEPROM by using the Adjustment program.

Troubleshooting Unit Level Troubleshooting 85

EPSON Stylus PHOTO 810/820/830 Revision B

Table 3-19. Check point for the poor printing quality

Occurrence

timing

CR position

Operation

Detailed phenomenon

A paper stains with ink

A top of a paper get wrinkled. ASF unit

Defective

unit/part name

Front frame

Lower housing

Paper eject roller

unit

Paper guide upper/

left

PF roller

Printhead

Check point Remedy

1. Check if the Front frame has the ink stain somewhere. 1. Clean the ink stain of the Front fr a me carefully with the soft cloth.

1. Check if the Front frame is bent up. 1. Replace the Front frame with new one.

1. Check if the Lower housing has the ink stain somewhere.

2. Check if the porous pad in the Lower housing comes off.

1. Check if the Paper eject roller has ink stain somewher e. 1. Clean the ink stain of the Paper eject roller

1. Check if the Spur gear 60 comes off. 1. Replace the Printer mechanism with new one.

1. Check if the Paper guide upper/left has ink stain

somewhere.

1. Check if the PF roller has ink stain somewhere. 1. Clean the ink stain of the PF roller carefully

1. Check if the wiping operation is correct performed.

2. Check if the Printhead cover has the ink drop.

1. Check if the Hopper pad is correctly pasted o n t he dent of

the Hopper.

2. Check if the LD pad is correctly pasted on the dent of the

Paper return plate.

1. Clean the ink stain of the Lower housing carefully with the soft cloth.

2. Reassembly the porous pad correctly.

carefully with the soft cloth.

1. Clean the ink stain of the P aper guide upper /left carefully with the soft cloth.

with the soft cloth.

1. Replace the Printer mechanism with new one.

2. Clean the ink drop on the Pr inthead cover

carefully with the soft cloth.

1. Replace the he Hopper pad with ne w one.

2. Replace the LD pad with new one.

Troubleshooting Unit Level Troubleshooting 86

DISASSEMBLY AND ASSEMBLY

CHAPTER

EPSON Stylus PHOTO 810/820/830 Revision B

W ARNING

CAUTION

4.1 Overview

This section describes procedures for disass embling the main components of the Stylus Photo 810/820/830. Unless otherwise specified, disassembly units or components can be reassembled by reversing the disassembly procedure. Things, if not strictly observed, that could result in injury or loss of life are described under the heading “Warning”. Precautions for any disassembly or assembly procedures are described under the heading “CAUTION”. Chips for disassembling procedures are described under the heading “CHECK POINT”. If the assembling procedure is different from the reversed procedure of the disassembling, the procedure is described under the heading “REASSEMBLY”. Any adjustments required after reassembling the units are described under the heading “ADJUSTMENT REQUIRED”. When you have to remove any units or parts that are not described in this chapter, refer to the exploded diagrams in the appendix.

Read precautions described in the next section before starting.

4.1.1 Precautions

See the precautions given under the handling “WARNING” and “CAUTION” in the following column when disassembling or assembling EPSON Stylus Photo 810/820/

830..



W ARNING

Disconnect the power cable before disassembling or assembling the printer.



If you need to work on the printer with power applied, strictly follow the instructions in this manual.



Wear protective goggles to protect your eyes from ink. If ink gets in your eye, flush the eye with fresh water and see a doctor immediately.



Always wear gloves for disassembly and reassembly to avoid iujury from sharp metal edges.



To protect sensitive microprocessors and circuitry, use static discharge equipment, such as anti-static wrist straps, when accessing internal components.



Never touch the ink or wasted ink with bare hands. If in k comes into contact with your skin, wash it off with soap and water immediately. If irritation occurs, contact a physician.



Avant de commencer, assure vous que l’imprimante soit eteinte et que le cordon d’alimentation soit debranche.



Veillez a jeter les piles usagees selon le reglement local.

Risque d’explosion si la pile est remplacée incorrectment. Ne remplacer que par une pile du même type ou d’un type équivalent recommandé par le fabricant. Eliminer les piles déchargées selon les lois et les règles de sécurité en vigueur.



When transporting the printer after installing the ink cartridge, be sure to pack the printer for transportation without removing the ink cartridge.



Use only recommended tools for disassembling, assembling or adjusting the printer.



Observe the specified torque when tightening screws.



Apply lubricants and adhesives as specified. (See Chapter 6 for details.)



Make the specified adjustments when you disassemble the printer. (See Chapter 5 for details.)



Make sure the tip of the waste ink tube is located at correct position when reassembling the waste ink tube. Otherwise it will cause ink leakage.

Disassembly and Assembly Overview 88

EPSON Stylus PHOTO 810/820/830 Revision B

4.1.2 Tools

Use only specified tools to avoid damaging of the printer.

Table 4-1. Tools

Name Supplier Parts No.

Phillips Screw Driver (No.1) EPSON B743800100 Phillips Screw Driver (No.2) EPSON B743800200 Nipper EPSON B740500100 Tweezers EPSON B741000100 POM Puller EPSON 2035659 (#F749) Hexagon Box Driver

(Opposite side : 5.5 mm)

EPSON B741700100

4.1.3

Screws

Table 4-2. Screws

No Name and specification Outward form pcs

1 C.B.S. SCREW, 3 x 6, F/Zn

2 C.C.S-TITE SCREW, 3 x 6, F/Zn

3 C.B.P-TITE SCREW, 3 x 8, F/Zn

4 C.B.S. SCREW, 3 x 14, F/Zn

5 C.B.S-TITE (P4), 3 x 6, F/Zn

6 +BIND B-TITE SEMS W2, 2.5 X 5, F/Zb

7 C.B.(O). SCREW, 4 x 5, F/Zg

8 C.B.P-TITE SCREW, 3 x 10, F/Zn

Disassembly and Assembly Overview 89

EPSON Stylus PHOTO 810/820/830 Revision B

4.1.4 Work Completion Check

If any service is made to the printer, use the checklist shown below to confirm all works are completed properly and the printer is ready to be returned to the user.

Table 4-3. Work Completion Check

Classifi-

cation

Main Unit

Adjustment

Item Check Point Status

Self-test Is the operation normal?

On-line Test Is the printing successful?

Printhead

Carriage Mechanism

Paper Feeding Mechanism

Specified Adjustment

Is ink discharged normally from all the nozzles?

Does it move smoothly?

Is there any abnormal noise during its operation?

Is there any dirt or foreign objects on the CR Guide Shaft?

Is the CR Motor at the correct temperature? (Not too heated?)

• Is paper advan ced smoothly?

• No paper jamming?

• No paper skew?

• No multiple feeding?

• No abnormal noise? Is the PF Motor at correct

temperature? Is the paper path free of any

obstructions? Are all the adjustment done

correctly?

Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Table 4-3. Work Completion Check

Classifi-

cation

Lubrication

Function ROM Version Version:

Packing

Others

Item Check Point Status

Are all the lubrication made at

Specified Lubrication

Ink Cartridge

Protective Materials

Attachments, Accessories

the specified points? Is the amount of lubrication

correct?

Are the ink cartridges installed correctly?

Have all relevant protective materials been attached to the printer?

Have all the relevant items been included in the package?

Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Checked



Not necessary



Disassembly and Assembly Overview 90

EPSON Stylus PHOTO 810/820/830 Revision B

CAUTION

4.2 Difference on Printer Machanism between SP810/820 and SP820/830

The Stylus Photo 820/830 is successor to the Stylus Photo 810/820, and is the same as its printer mechanism basically. However, some modificaitons has been taken on Stylus Photo 820/830 since the first mass production. Followings show you the difference on the printer mechanism between Stylus Photo 810/820 and Stylus Photo 820/830.

1) SW botton The shape/material of the SW button is changed as below.

- Stylus Photo 810/820 : It is assembled to the M/B mounting plate by the two hooks of the SW button.

- Stylus Photo 810/820 : It is assembled to the Upper housing by the two hooks of the SW button.

Fixture position on upper housing

Stylus Photo 810/820

Stylus Photo 820/830

2) Main board The size/connector position of the main board is changed as below.

Stylus Photo 810/820

Stylus Photo 820/830

Figure 4-2. Difference of main board



When assembling the CR motor/PF motor /Head FFC to the main board,



Make sure that the the harness/connector of the above parts is installed to the connector on the main board securely.



When disconnect/connect the harness/connector of the CR motor/PF motor/Head FFC, be careful not to hurt your hand with the protrusion of the main board shiel plate. (Red circle portion in Fig. 4-2.)

Figure 4-1. Difference of SW button



When assembling the SW button to the Upper housing,



Make sure that the fixture position of the SW button is set to the Upper housing securely.

3) CR motor/PF motor*/Head FFC Due to the above 2), the length of each harness/connector is longer than current one. * The specification of the PF motor is newly chan ged for t he Stylus Photo 82 0/830 .

4) P/S baord a. The type of the AC cable is changed to AC inlet on the Stylus Photo 820/830. b. The Stylus Photo 810/820 has the Power supply radiator on the P/S board. However, the Stylus Photo 820/830 does not have it. (Screw position on the P/S board is the same as the Stylus Photo 810/820.)

Disassembly and Assembly Difference on Printer Machanism between SP810/820 and SP820/830 91

EPSON Stylus PHOTO 810/820/830 Revision B

5) Ink cartridge The T-code of the ink cartridge is as follows. Stylus Photo 810/820/830 (for all subsidiaries) : Bk - T026, Col - T027



CAUTION

If other I/C is installed on Stylus Photo 810/820/830, the printer detects ink end error.

6) Paper eject roller shaft The Stylus Photo 820/830 has two kinds of the paper eject roller shaft. One is metaric roller shaft, and another is plastic rol ler shaf t. (The Styl us Phot o 810/820 has metaric one only.) The interchangeability has not kept completely between the lower housing and the paper eject roller. The product with the plastic roller is used the exclusive lower housing. (This lower housing can be used for the Stylus Photo 810 /820.)

4.2.1 Caution in reassembling to ink leakage problem

Since some ink leakage mode has already found on Stylus C60, Stylus Photo 810/820 (one is caused by ink tube miss-setti ng, and the other is caused by ink collected in the Cap frame during transportati on), we would li ke you to perform t he following acti on in your repair/refurbishement .

1) Ink tube miss-setting a. Place the ink tube on the Lower housing correctly. b. Confirm the condition of the tip of the ink tube. c. Put the "Porous Pad, Ink Tube Stopper" on the Lower housing correctly. * Refer to the "Waste drain ink pad removal".

2) Ink collected in the Cap frame When the printer wipes off the surface of the print head, waped ink may possibly collect in the Cap frame. In this time, in case that the printer is transported with incorrect way, ink dr ops t o th e U pper ho uing directly via the Cap frame. Then, i n k may leaks outside of the printer. a. Check the ink collection condition in the Cap frame. b. Wipe up the i nk by using the cotton bar and so on, if you can see the ink.

wiped ink in the cap frame

Stylus Photo 810/820/830

Disassembly and Assembly Difference on Printer Machanism between SP810/820 and SP820/830 92

EPSON Stylus PHOTO 810/820/830 Revision B

4.3 Disassembly

The flowchart below shows step-by-step disassemb ly procedures. When d isassembling each unit, refer to the page number shown in the figure.

Upper housing removal

Page 94

Printhead removal

Page 96

CR unit removal

Page 98

CR motor removal

Page 101

*2)

Ink system unit removal

Page 120

ASF unit removal

Page 102

PSB/PSE unit removal

Page 104

*1) Lower housing removal (Incl udi ng Paper eject roller removal *3)

Page 115

PF roller removal

Page 123

Holder shaft unit removal

Page 107

* The numbers in the figure of each section means the disassembling procedure of

the specific part.

* Each disassembly procedure explains how to disassemble individual part in the

Circuit board removal

Page 111

Waste drain ink pad removal

Page 114

units.

PF motor removal

Page 125

*1) Only when you replace the Lower housing with new one, you can remove the

Printer mechanism from the printer. In this time, be careful not to deform the Main frame.

*2) We recommend to replace to new Printer mechanism with the Lower housing to avoid the Main frame deformation by removing a part on the

Printer mechanism without the Lower housing (These units are not established for the service part individually). However, the these procedures should be followed in the urgent case. In this time, the disassembly procedure is different depending on the removed unit. * Ink system unit : ASF unit, CR unit, PSB/PSE unit, Holder shaft unit , Lower housing * PF roller/PF motor : ASF unit, CR unit, PSB/PSE unit, Lower housing

*3) Unlike the paper eject roller shaft for the Stylus C50/C60/C61/C62, there is not two hooks on the paper eject roller shaf t fo r t h e Stylus Photo 810/

820830. So, you can remove it from the Printer mechanism. However, you cannot replace it to new one because its roller shaft is not established for service part.

Figure 4-3. Disassembling flowchart

Disassembly and Asse mbly Disassembly 93

EPSON Stylus PHOTO 810/820/830 Revision B

CAUTION

4.3.1 Upper housing removal

1. Move the Edge guide on the ASF unit to the rightmost position.

Edge guide

Figure 4-4. Edge guide setting position for the Lower housing removal



CHECK

PO INT

Make sure that the Edge guide is in the cutout portion of the Upper housi n g.

2. Release total seven hooks of the U pper housing by u sing t he precis ion screw driver (-).

Backside

left side

Hooks

Front

right side

Figure 4-5. Hooks position of the Upper housing



Do not damage hooks by the precision screwdriver (-) in removing the Upper housing.



Do not tilt the printer too much when the Upper housing is removed by the precision screwdriver (-). This is because ink may flow if the cap is not covered by the Printhead. (CR is out of the home position)

Disassembly and Asse mbly Disassembly 94

EPSON Stylus PHOTO 810/820/830 Revision B

3. Move the protrusion of the Upper housing, which contacts USB interface, to the right side slightly by using the precis i on screwdrive r (-).

USB interface

Figure 4-6. Protrusion position of the Upper housing



CAUTION

Do not damage the protrusion by the precision screwdriver (-).



When assembling the Upper housing to the printer,



Make sure that the lower metal fittings for locking the Parallel interface is on the Housing.



Make sure that seven hooks of the Upper housing is correctly fixed to the Lower housing.



Make sure that there is not the clearance between the Upper housing and the Low e r ho using.

Disassembly and Asse mbly Disassembly 95

EPSON Stylus PHOTO 810/820/830 Revision B

4.3.2 Printhead removal

1. Remove the Upper housing from the printer. (Refer to Section 4.3.1)

2. Open the Cover cartridge, and remove the both black and color ink cartridges.

3. Remove the both Cover cartridges from the CR unit.

4. Release two hooks for securing the Head FFC holder, and remove the Head FFC holder from the CR unit.

Spacer FFC

Cable holder

Hooks for Head FFC

5. Remove two screws (C.B.P-TITE SCREW 3x8 F/Zn, +BIND B-TITE SEMS W2

2.5x5 F/Zb) for tightening the Printhead, and remove the Printhead from the CR unit in the order indicated in the following figure.

This figure is the Stylus Photo 810/820/830. There is a difference of the Printhead between the Stylus C50/C60/C61/C62 and the Stylus Photo

C.B.P-TITE SCREW, 3x8, F/Zn

810/820/30.

- Stylus C50/C60/C61/C62 : Printhead for 4col.

- Stylus Photo 810/820/830 : Printhead for 6col.

+BIND B-TITE SEMS, W2 2.5x5, F/Zb

Figure 4-8. Printhead removal

6. Disconnect the Head FFC from the connector on the Printhead.

Figure 4-7. Head FFC holder removal

Disassembly and Asse mbly Disassembly 96

EPSON Stylus PHOTO 810/820/830 Revision B

ADJUSTMENT

REQUIRED

When assembling the Printhead to the CR unit,



Make sure to place the Head FFC on the Spacer FFC and the



cable holder on the left side of the CR unit. (Refer to Figure 4-7)

Make sure to install the Head grounding plate to the carriage



correctly.

Head installation position pains

Head grounding plate

Figure 4-9. Printhead installation position

(pin & the grounding plate)

Make sure to fit two holes of the Printhead to t he installation



position pins correctly. (Refer to Figure 4-9) Fastening two screw (C.B.P-TITE SCREW 3x8 F/Zn,



+BIND B-TITE SEMS W2 2.5x5 F/Zb) for securing the Printhead to the CR unit.

When assembling the Head cable holder to the CR unit,



Make sure to place the Head FFC in the correct position.



Figure 4-10. Head FFC setting position

Make sure that the Head FFC is connected to the Printhead



correctly. Make sure that the Head cable holder is correctly fixed.



When the Printhead is replaced with new one, the following



adjustments must be performed in the order below.

1) Initial ink charge

2) Head ID input

3) Gap adjustment (Bi-d adjustment)

4) Top margin adjustmen t

5) 1st dot position adjustment

Disassembly and Asse mbly Disassembly 97

Tightening Torque for each screw is as follows.

•

C.B.P-TITE SCREW, 3 x 8, F/Zn (1 pcs) : 6 ± 1 kgf.cm

•

+BIND B-TITE SEMS, W2, 2.5 x 5, F/Zb (1 pcs) :

2 ± 0.5 kgf.cm

When the Printhead is removed and reinstalled, only the



following adjustment is required.

1) Printhead cleaning

2) Gap adjustment (Bi-d adjustment)

3) Top margin adjustmen t

4) 1st dot position adjustment

EPSON Stylus PHOTO 810/820/830 Revision B

CHECK

PO INT

4.3.3 CR unit removal

1. Remove the Upper housing from the printer. (Refer to Section 4.3.1)

2. Release the change lever toward the backside of the printer by using the tweezers, and move the CR unit from the CR home position to around the center position.

3. Loosen the CR timing belt by pushing the Driven pulley holder to the right side, and remove the CR timing belt carefully from the CR motor pinion gear.

CR timing belt

Figure 4-11. CR timing belt removal

4. Remove the Compression spring 19.6 from the Driven pulley holder by using the tweezers.

5. Slide the Driven pulley holder to the right side, and remove it forward.

6. Release the Head FFC from the Spacer FFC on the LD roller shaft holder, and disconnect the Head FFC from the connectors (CN8, CN9) on the Main board. (Refer to Figure 4-7)

7. Release two CR guide shaft rod springs from the hooks on the l eft and right si de of the Main frame.

Left side Right side

CR guide shaft Rod spring

Figure 4-13. CR guide shaft rod spring release



In this step, you cannot remove the left CR guide shaft rod spring from the CR guide shaft even if it is released from the Main frame. So, when sliding the CR guide shaft in the next step, remove the left CR guide shaft rod spring carefully.

Driven pulley holder

Compression spring 19.6

Figure 4-12. Compression spring 19.6 removal

Disassembly and Asse mbly Disassembly 98

Epson 830 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

PRODUCT DESCRIPTION

PRODUCT DESCRIPTION FEATURES 7

PRODUCT DESCRIPTION SPECIFICATIONS 8

PRODUCT DESCRIPTION INTERFACE 17

PRODUCT DESCRIPTION PANEL CONTROL 24

OPERATING PRINCIPLES

Operating Principles Overview 28

Operating Principles Electrical Circuit Operating Principles 42

C417/C418 Main/Main-B Board

TROUBLESHOOTING

Troubleshooting Overview 60

Troubleshooting Troubleshooting with LED Error Indications and Status Monitor 3 Message 61

Troubleshooting Unit Level Troubleshooting 66

DISASSEMBLY AND ASSEMBLY

Disassembly and Assembly Overview 88

Disassembly and Assembly Difference on Printer Machanism between SP810/820 and SP820/830 91

Disassembly and Asse mbly Disassembly 93