Epson Stylus C50, Stylus C 60, Stylus C62, Stylus C61 Service Manual

EPSON Stylus C50/C 60/C61/C62

Color Inkjet Printer

SEIJ02001

®

SERVICE MANUAL

Notice

 All rights reserved. No part of this manual may be reprod uced, stored in a r et rieval syste m, or trans mitted in any form or by a ny means electr onic,

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

 The contents of this manual are subject to change without notice.
 All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would

greatly appreciate being informed of them.

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

thereof.

EPSON is a registered trademark of SEIKO EPSON CORPORATION.

General Notice:Other product names used herein are for identificati on purp ose only and may be trademarks or registe red trademar ks of thei r respec-

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

Copyright ©

2000 SEIKO EPSON CORPORATION.

TPCS Quality Assurance Dept.

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 shoul d be exercised in

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

DANGER

1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY

MAINTENANCE OR REPAIR PROCEDURES.

2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED

FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.

3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL

INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON
POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.

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

WITH SHARP EDGES.

WARNING

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

2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/

RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT
CONNECT IT TO THE POWER SOURCE.

3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR

REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.

4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS

ANTI-STATIC WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.

5. 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

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 procedure s for disas sembling
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 topi c 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 procedur e, pr acti ce,
or condition that, if not strictly observed, could result in
damage to, or destruction of, equipment.

May indicate an operating or maintenance procedure,
practice or condition that is necessary to accomplish a task
efficiently. It may also provide additional information that is
related to a specific subject, or comment on the results
achieved through a previous action.

I.ndicates an operating or maintenance procedure, pract ice
or condition that, if not stri ctly observed, coul d result in injur y
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.

ADJUSTMENT

REQUIRED

CAUTION

CHECK

POIN T

W ARNING

Revision Status

Revision Issued Date Description

A 2001/8/6 First Release

B 2001/9/19

Addition for the Stylus C50
* Section 1
Page 9 : The description in the “1.1 Features” was added.
Page 10,11 : The description in the “1.2.2 Printing Specification” was added.
Page 16 : The description in the “1.2.6..1 Bk ink cartridge (Stylus C50)” was added.
Page 18 : The description in the “1.2.7 Electric Specification” was added.
Page 19 : The description in the “1.2.9 Reliability” / “1.2.10 Safety Approvals” /
“1.2.12 CE Marking” was added.
Page 24 : The description in the “1.3.2 Parallel Interface (Reserve Channel)” was added.
* Section 2
Page 30 : The description in the “2.1 Overview” was added.
Page 31 : The description in the “2.1.2 Printhead” was added.
Page 33 : The description in the “2.1.2.2 Printing Method” was added.
Page 39 : The description in the “2.1.4.2 Paper Feeding Mechanism” was added.
Page 40 : The description in the 2.1.5.1 Capping Mechanism” was added.
Page 43, 44 : The description in the “2.1.6 Ink Sequence” was added.
Page 45 : The description in the “2.2 Electrical Circui t Operating Pr incipl es” / “ 2.2.1 C417
PSB/PSB board” was added.
Page 48 : The description in the “2.2. 2 C418 Main /Main-B/ C429 Main Boar d” was added.
Page 49 : The description in the “2.2.2.1 Main Elements” was added.
Page 50 : The description in the “2.2.2.2 Printhead Driver Circuit” was added.
Page 52 : The description in the “2.2.2.5 Reset Circuit” was added.
* Section 3
Page 56 : The description in the “3.2 Troubleshooting with LED Error Indications and
Status Monitor 3 Message” was added.
Page 72 : The description in the “3.3 Unit Level Troubleshooting (Error regarding the
paper feeding / ejecting without LEDs and STM3” was added.
* Section 4
Page 84 : The description in the “4.1.3 Screws” was added.
Page 89 : The description in the “4.2.2 Printhead removal” was added.
Page 100 : The description in the “4.2.7 Holder shaft unit removal” was added.

Revision Issued Date Description

B 2001/9/18

Page 104 : The description in the “4.2.8 Circuit board removal” was added.
* Section 6
Page 124 : The description in the “6.1.2 Service Maintenance” was added.
* Section 7
Page 129 ~ 131 : The description in the “7.1.1 Major Component Unit” was added.
Page 132, 133 : The description in the “EEPROM Address Map” was added.
Page 139 : The description in the “7.2 Component Layout” was added.
Page 141 ~ 146 : The figures in the “7.3 Exploded Diagram” was added.

Amendment / Addition for the Stylus C50/C60
* Section 1
Page 19 : The description in the “1.2.12 CE Marking” was amended.
Page 27 : The description in the “1.4.4 Error Status“ was amended.
* Section 2
Page 30 : The annotation in the “2.1 Overview” was added.
Page 39 : The annotation in the “2.1.4.2 Paper Feeding Mechanism” was added.
Page 41 : The figure in the “2.1.5.1 Capping Mechanism” was amended.
Page 42 : The figure in the “2.1.5.2 Pump Unit Mechanism” was amended.
Page 46 : The description in the “2.2.1 C417 PSB/PSB board” was amended.
* Section 3
Page 72 : The expression in the “3.3 Unit Level Troubleshooting (Error regarding the
paper feeding / ejecting without LEDs and STM3” was amended.
* Section 4
Page 86 : The description in the “4.2 Disassembly” was amended.

Revision Issued Date Description

C 2002/7/24

Page 5,6 : The description in the “1.2 Specification” was added.
Page 8: The description in the “1.2.4.3 Exclusive Paper” was added.
Page 11 : The description in the “1.2.5.2 Envelope” was added.
Page 12 : The description in the “1.2.6.2 Bk Ink Cartridge” / “1.2.6.3 Color Ink Cartridge”
was added.
Page 13 : The description in the “1.2.7 Electric Specification” was added.
Page 14 : The description in the “1.2.8 Environmental Condition”/”1.2.9 Reliability”
/”1.2.10 Safety Approvals” was added.
Page 15 : The description in the “1.2.11 Acoustic Noise”/”1.2.12 CE Marking” was added.
Page 20 : The description in the “1.3.2 Parallel Interface Device ID” was added.
Page 22 : The description in the “1.4 Panel Control” was added.
* Section 2
Page 26 : The description in the “2.1 Overview” was added.
Page 27 : The description in the “2.1.2 Printhead” was added.
Page 29 : The description in the “2.1.2.2 Printing Method” was added.
Page 30 : The description in the “2.1.2 Carriage Mechanism” was added.
Page 31 : The description in the 2.1.3 Paper Load/Feed Mechanism” was added.
Page 39, 40 : The description in the “2.1.6 Ink Sequence” was added.
Page 41 : The description in the “2.2. Electrical Circuit Operati ng Principles” was added.
Page 42 : The description in the “2.2.1 C417 PSB/PSE baord, C482 PSH board” was
added.
Page 44, 45 : The description in the “2.2.1.2 C482 PSH board” was added.
Page 52-57 : The description in the “2.2.3 C483/C484 Main-B board”/”2.2.3.1 Main
elements”/”2.2.3.2 Printhead Drive Circuit”/”2.2.3.3 PF/CR motor Dri ve
Circuit”/”2.2.3.4 Reset Regulator Circuit”/” 2.2.3. 5 EEPROM Control Circui t”
/”2.2.3.6 Sensor Circuit”.2 Printhead Driver Circuit” was amended.
* Section 3
Page 59 : The description in the “3.1 Overview” was added.
* Section 4
Page 90, 91 : The description in the “4.2 Difference on the Printer Mechanism between
C60 and C61/C62” was added.

Revision

Issued Date

Description

C 2002/7/24

* Section 5
Page 127, 128 : The description in the “5.1 Required Adjustment” was amended.
* Section 6
Page 131 : The description in the “6.1.2 Service Maintenance” was added.
Page 133, 135 : The description in the “6.1.3 Lubrication” was added.
* Section 7
Page 137-140 : The description in the “7.1.1 Major Component Unit” was added.
Page 148-151 : The description in the “7.1.2 EEPROM Adress Map” was added.
Page 165-169 : The description in the “7.3 Exploded Diagram” was added.
Page 172 : The description in the “7.4 Part List” was added.

Page 177, 180 : The diagram in the “7.5 Electrical Circuits” was added.

COMTENTS

PRODUCT DESCRIPTION

FEATURES .................................................. ...... ....... ..................................... 4

SPECIFICATIONS.............. ............................................................................ 5

Physical Specification................................................................................ 5

Printing Specification................................................................................. 5

Paper Feeding........................................................................................... 6

Paper Specification ................................................................................... 7

Printing Area............................................................................................ 10

Ink Cartridge Specification ...................................................................... 11

Electric Specification ............................................................................... 13

Environmental Condition ......................................................................... 14

Reliability................................................................................................. 14

Safety Approvals ..................................................................................... 14

Acoustic Noise......................................................................................... 15

CE Marking.................... ...... ....... ...... ....... ...... ....... ...... ....... ...... ....... ...... ... 15

INTERFACE................................................................................................. 16

Parallel Interface (Forward Channel) ...................................................... 16

Parallel Interface (Reserve Channel)...................................................... 18

USB Interface.......................................................................................... 20

Prevention Hosts of Data Transfer Time-out........................................... 21

Interface Selection................................................................................... 21

IEEE1284.4 Protocol............................................................................... 21

PANEL CONTROL ....................................................................................... 22

Indicators (LEDs)..................................................................................... 22

Panel Functions....................................................................................... 22

Printer Condition and Panel Status......................................................... 23

Error Status............................................................................................. 23

Printer Initialization.................................................................................. 24

Operating Principles

Overview ...................................................................................................... 26

Printer Mechanism .................................................................................. 26

Printhead................................................................................................. 27

Carriage Mechanism ............................................................................... 30

Paper Loading/Feeding Mechanism ....................................................... 31

Ink System Mechanism ........................................................................... 36

Ink Sequence .......................................................................................... 39

Electrical Circuit Operating Principles .......................................................... 41

C417 PSB/PSE board, C482 PSH board................................................ 42

C418 MAIN/MAIN-B/C429 Main Board ................................................... 46

C483/C484 MAIN-B Board...................................................................... 52

Troubleshooting

Overview ...................................................................................................... 59

Troubleshooting with LED Error Indications

and Status Monitor 3 Message............................................................. 60

Unit Level Troubleshooting........................................................................... 65

Disassembly and Assembly

Overview ...................................................................................................... 86

Precautions ............................................................................................. 86

Tools ....................................................................................................... 88

Screws.................................................................................................................. 88

Work Completion Check ......................................................................... 89

Difference on Printer Machanism between

SC60 and SC61/C62............................................................................ 90

Disassembly................................................................................................. 92

Upper housing removal........................................................................... 93

Printhead removal................................................................................... 95

CR unit removal ...................................................................................... 97

CR motor removal ................................................................................. 100

ASF unit removal................................................................................... 101

PSB/PSE unit removal .......................................................................... 103

Holder shaft unit removal ...................................................................... 106

Circuit board removal ............................................................................ 110

Waste drain ink pad (under the ASF unit) removal ............................... 113

Lower housing removal ......................................................................... 114

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

Major Component Unit .......................................................................... 137

EEPROM Address Map......................................................................... 141

Component Layout ..................................................................................... 152

Exploded Diagram...................................................................................... 154

Parts List..................................................................................................... 170

Electrical Circuits........................................................................................ 173

CHAPTER

1

PRODUCT DESCRIPTION

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION FEATURES 4

1.1 FEATURES

The major features of EPSON color inkjet dot matrix printer EPSON Stylus C50/C60/
C61/C62 are:



High color print quality



1440 (H) X 720 (V) dpi printing

(Stylus C50)



2880 (H) X 720 (V) dpi printing

(Stylus C60/C61/C62)



Four Color Printing (YMCK)

(Stylus C50/C60/C61/C62)



Traditional and New Microweave

(Stylus C60/C61/C62)



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

Figure 1-1. Product’s external view

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION SPECIFICATIONS 5

1.2 SPECIFICATIONS

This section covers specifications of the printer.

1.2.1 Physical Specification



Weight : 3.42 kg (without the ink cartridges)



Dimension

[Stylus C50/C60]

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

[Stylus C61/C62]

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

1.2.2 Printing Specification



Print method



On demand ink jet



Nozzle configuration

[Stylus C50]



Monochrome 48 nozzles (48 x 1 row)



Color 45 nozzles x 1 row (Cyan, Magenta, Yellow : 15 nozzles is assigned for
each 3colors in one row.

Figure 1-2. Nozzle configuration (Stylus C50)

[Stylus C60/C61/C62]



Monochrome 144 nozzles (48 x 3 staggered)



Color 48 nozzles x 3 (Cyan, Magenta, Yellow)

Figure 1-3. Nozzle configuration (Stylus C60/C61/C62)



Print direction



Bi-direction with logic seeking



Print speed & printable columns

*CPS: Characters/Second

0.21117 (1/120")

#M 15

#M 1

#C 1

#C 15

#Y1

#Y15

#B1

#B48

2.2578(32/360")

16.5

17

Table 1-1. Character mode (Black only)

Model name Character pitch Character quality Printable columns CR speed

Stylus C50

10 CPI LQ 80 200 CPS*

Stylus C60/

C61/C62

10 CPI LQ 80 238 CPS*

#144
#141

#138
#135

#143
#140

#137
#134

#48

#48
#47
#46
#45

#9
#6

#3

#8
#5

#2

#7
#4

#1

#3
#2

#1

(Black1)

(Black2)

(Black3)

(Cyan)

(Yellow)

360 dpi

360 dpi

120 dpi

#47
#46
#45

#3
#2

#1

#142
#139

#136
#133

7.902

(112/360inch)

2.2578

(32/360inch)

(Magenta)

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION SPECIFICATIONS 6

* IPS: Inch/Second



Control code



ESC/P R4C8440 exclusive (Stylus C50)



ESC/P Raster command (Stylus C60/C61/C62)



EPSON Remote command (Stylus C50/C60/C61/C62)



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



12 KB (Stylus C50)



32 KB (Stylus C60/C61/C62)

1.2.3 Paper Feeding



Feeding method



Friction feed with ASF



Paper path



Cut-sheet ASF (Top entry Front out)



Feed speed

Table 1-2. Raster graphics mode

Model name

Horizontal

resolution

Printable area Available dot CR speed

Stylus C50

360 dpi

(Normal dot)

209.8 mm

(8.26 inch)

2976

60.96 cm/s

(24.0 IPS*)

360 dpi

(Multi shot 2 dot)

209.8 mm

(8.26 inch)

2976

50.80 cm/s
(20 IPS*)

480 dpi

(Black mode)

209.8 mm

(8.26 inch)

3968

35.814 cm/s
(14.1 IPS*)

720 dpi

209.8 mm

(8.26 inch)

5952

50.80 cm/s
(20 IPS*)

1440 dpi

209.8 mm

(8.26 inch)

11904

50.80 cm/s
(20 IPS*)

Stylus C60

360 dpi

(Normal dot)

209.8 mm

(8.26 inch)

2976

86.36 cm/s

(34.0 IPS*)

360 dpi

(Multi shot 3 dot)

209.8 mm

(8.26 inch)

2976

60.452 cm/s
(23.8 IPS*)

720 dpi

209.8 mm

(8.26 inch)

5952

50.80 cm/s
(20 IPS*)

1440 dpi

209.8 mm

(8.26 inch)

11904

50.80 cm/s
(20 IPS*)

Stylus C61/C62

360 dpi

(Normal dot)

209.8 mm

(8.26 inch)

2976

78.99 cm/s

(31.1 IPS*)

360 dpi

(Multi shot 3 dot)

209.8 mm

(8.26 inch)

2976

60.45 cm/s

(23.8 IPS*)

720 dpi

209.8 mm

(8.26 inch)

5952

48.26 cm/s
(19 IPS*)

1440 dpi

209.8 mm

(8.26 inch)

11904

48.26 cm/s
(19 IPS*)

Table 1-3. 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

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION SPECIFICATIONS 7

1.2.4 Paper Specification

1.2.4.1 Plain paper

1.2.4.2 Envelope

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

Table 1-4. Plain paper

Item

Width

(mm)

Length

(mm)

Thickness

(mm)

Weight
(g/m

2

)

Quality

A4 210 297

0.08-0.11

64-90

(17-24(lb))

Plain paper

Reclaimed paper

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
A6 105 148

User

defined

89-241.3 89-1117.6

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

°°°°

C (59 to 77

°°°°

F)

- Humidity 40 to 60% RH

Table 1-5. Envelope

Item

Width

(mm)

Length

(mm)

Thickness

(mm)

Weight

(g/m

2

)

Quality *

No.10 241.3 104.8

N/A

45-75

(12-20(lb))

Bond paper

Air mail

PPC

DL 220 110
C6 162 114

Envelope

220*132

220 132

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

°°°°

C (59 to 77

°°°°

F)

- Humidity 40 to 60% RH

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION SPECIFICATIONS 8

1.2.4.3 Exclusive paper

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

* 98 (26lb) for EU
** Post Card : Stylus C61/C62 only

Table 1-6. Exclusive paper

Item Size

Width

(mm)

Length

(mm)

Thickness

(mm)

Weight
(g/m

2

)

Photo Quality

Ink Jet Paper

A4 210 297

0.13

102 (27lb) *

Letter 215.9 279.4

102 (27lb)Legal 215.9 355.6

B5 182 257

Photo Quality

Ink Jet Card **

5*8 127 203.2

0.21 180 (48lb)

8*10 203.2 254

A6 105 148

Post Card 100 148

360dpi Ink Jet Paper

A4 210 297

0.11 89 (24lb)

Letter 215.9 279.4

Premium Luster

Photo Paper

Letter 215.9 279.4 0.27 250 (66lb)

Ink Jet Transparencies

A4 210 297

0.13 N/A

Letter 215.9 279.4

Photo Quality

Glossy Film

A4 210 297

0.13 N/ALetter 215.9 279.4

A6 105 148

Matte Paper­Heavyweight

A4 210 297

0.23 167(44Ib)

Letter 215.9 279.4

Photo Paper

A4 210 297

0.23 194 (52lb )

Letter 215.9 279.4

Card 100 148

Photo Paper

4*6

113.6 175.4

Panorama 210 594

Photo Quality Self

Adhesive Sheets

A4 210 297 0.19 167 (44lb)

Photo Stickers 16 A6 105 148 0.19 167 (44l b)

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

Iron-On Cool Peel

Transfer Paper

A4 210 297

0.18 124 (33lb )

Letter 215.9 279.4

Premium Glossy

Photo Paper

A4 210 297

0.27 255 (68lb )

Letter 215.9 279.4

Premium Semigloss

Photo Paper

A4 210 297

0.27 250 (66lb )

Letter 215.9 279.4

Premium Ink Jet

Plain Paper

A4 210 297 0.11 80 (21lb)

Bright White
Ink Jet Paper

A4 210 297 0.13 92.5 (25lb)

Table 1-6. Exclusive paper

Item Size

Width

(mm)

Length

(mm)

Thickness

(mm)

Weight

(g/m

2

)

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION SPECIFICATIONS 9

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°°°°C (59 to 77°°°°F)

- Humidity 40 to 60% RH



EPSON Photo Quality Glossy Film and Self Adhesive Sheets
should be stored under the following conditions ;

- Temperature 15 to 30°°°°C (59 to 86°°°°F)

- Humidity 20 to 60% RH

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION SPECIFICATIONS 10

1.2.5 Printing Area

1.2.5.1 Cut sheet

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

* Bottom margin can be set to 3 mm at minimum when the paper length is

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

Figure 1-4. Printable area for cut sheet

Table 1-7. Printing area

Paper size

Left margin

(min.)

Right margin

(min.)

Top margin

(min.)

Bottom margin

(min.)

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

14 mm (0.54”) / 3mm
(0.12”) *

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

14 mm (0.54”) / 3mm
(0.12”) *

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

14 mm (0.54”) / 3mm
(0.12”) *

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

14 mm (0.54”) / 3mm
(0.12”) *

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

14 mm (0.54”) / 3mm
(0.12”) *

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

14 mm (0.54”) / 3mm
(0.12”) *

Printable area

LM

RM

PW

TM

BM

PL

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION SPECIFICATIONS 11

1.2.5.2 Envelopes

Refer to the following table. As for each margin area, refer to Figure 1-5.

Table 1-9. Env elope margin (Stylus C61/C62)

* Setting direction of Envelope between Stylus C50/60 and C61/C62 is different.

Figure 1-5. Printable area for envelopes

1.2.6 Ink Cartridge Specification

1.2.6.1 Black ink cartridge (Stylus C50)



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

o

C)



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

Figure 1-6. Black ink cartridge

Table 1-8. Env elope margin (Stylus C50/C60)

Paper size

Left margin

(min.)

Right margin

(min.)

Top margin

(min.)

Bottom margin

(min.)

#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”)

Paper size

Left margin

(min.)

Right margin

(min.)

Top margin

(min.)

Bottom margin

(min.)

#10 3 mm (0.12”) 14mm (0.55”) 3 mm (0.12”) 3 mm (0.12”)
DL 3 mm (0.12”) 14 mm (0.55”) 3 mm (0.12”) 3 mm (0.12”)

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

Printable area

LM

RM

TM

BM

(Rib area)

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION SPECIFICATIONS 12

1.2.6.2 Black ink cartridge (Stylus C60/C61/C62)



Type : Exclusive cartridge



Color : Black



Print capacity : 600 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

o

C)



Dimension : 28.1 mm (W) x 66.85 mm (D) x 43.3 mm (H)

Figure 1-7. Black ink cartridge

1.2.6.3 Color ink cartridge (Stylus C50/C60/C61/C62)



Type : Exclusive cartridge



Color : Magenta, Cyan, Yellow



Print capacity : 300 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

o

C)



Dimension : 43.2 mm (W) x 66.85 mm (D) x 43.3 mm (H)

Figure 1-8. 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

o

C environment, however it will be

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

(Rib area)

(Rib area)

(Rib area)

(Rib area)

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION SPECIFICATIONS 13

1.2.7 Electric Specification

[120V Version] (Stylus C50/C60)



Rated voltage : AC120V



Input voltage range : AC99∼132V



Rated frequency range : 50∼ 60Hz



Input frequency range : 49.5∼ 60.5Hz



Rated current : 0.4A



Power consumption



Stylus C50

: Approx. 15W (ISO10561 Letter Pattern
Approx. 3W in standby mode
Energy Star compliant



Stylus C60

: 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



Stylus C50

: AC 3000V rms. 1 minute or
AC 1500V rms. 1 second
(between AC line and chassis)



Stylus C60

: AC 1000V rms. 1 minute or

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

[220 ∼ 240V Version] (Stylus C50/C60)



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



Stylus C50

: Approx. 15W (ISO10561 Letter Pattern)
Approx. 3W in s tandby mode
Energy Star compliant



Stylus C60

: Approx. 17W (ISO10561 Letter Pattern)
Approx. 4.5W in standby mode
Energy Star compliant



Insulation resistance : 100M ohms min.

(between AC line and chassis, DC 500V)



Dielectric strength



Stylus C50

: AC 3000V rms. 1 minute or

AC 1500V rms. 1 second

(between AC line and chassis)



Stylus C60

: AC 1500V rms. 1 minute

(between AC line and chassis)

[UPS Version] (Stylus C61/C62)



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 : 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)

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION SPECIFICATIONS 14

1.2.8 Environmental Condition



Temperature



Operating : 10 to 35°C (Refer to Figure 1-9 : next page)



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 1-9)



Non-operating : 5 to 85% RH

(without condensation / with shipment 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)

Figure 1-9. Temperature/Humidity range

1.2.9 Reliability



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

or 5 years although less than 50,000 pages printing



Print head life



Stylus C50

: 4 billion dots/nozzle



Stylus C60

: 3 billion dots/nozzle



Stylus C61/C62

: 3 billion dots/nozzle

or 5 years although less than 3 billion dots/nozzle

1.2.10 Safety Approvals

[120V Version] (Stylus C50/C60)



Safety standards



Stylus C50

: UL1950 with D3

CSA22.2 No.950 with D3



Stylus C60

: UL1950

CSA22.2 No.950



EMI : FCC part15 subpart B Class B

CSA C108.8 Class B

[220∼240V Version] (Stylus C50/C60)



Safety standards: : EN60950 (VDE)



EMI : EN55022 (CISPR Pub.22) Class B

AS/NZS 3548 Class B

[UPS Version] (Stylus C61/C62)



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

10

27

30

35

40

20

Temperature (°C)

20

30

40

50

90

80
70
60

Humidity (%)

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION SPECIFICATIONS 15

1.2.11 Acoustic Noise



Level

(Stylus C50/C60)

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



Level

(Stylus C61/C62)

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

1.2.12 CE Marking

[220∼240V Version] (Stylus C50/C60)



Low voltage directive 73/23/EEC : EN60950



EMC directive 89/336/EEC



Stylus C50

: EN55022 Class B

EN55024
EN61000-3-2
EN61000-3-3

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



Stylus C60

: EN55022 Class B

EN61000-3-2

EN61000-3-3

EN50082-1

IEC801-2

IEC801-3

IEC801-4

[UPS Version] (Stylus C61/C62)



Low voltage directive 73/23/EEC : EN60950



EMC directive 89/336/EEC : EN55022 Class B

EN61000-3-2
EN61000-3-3
EN55024

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION INTERFACE 16

1.3 INTERFACE

The EPSON Stylus C50/C60/C61/C62 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 jam error



Ink out error



No ink cartridge



Maintenance request

PE signal is at high level during pa per out error.

Figure 1-10. Data transmission timing

* 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 p age.

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

data byte n

data byte n+1

-STROBE

BUSY

-ACKNLG

t

hold

t

setup

t

stb

t

ready

t

busy

t

reply

t

ack

t

nbusy

t

next

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION INTERFACE 17

* 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 1-11. 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

Table 1-13. Connector pin assignment and signals

Pin No. Signal name

Return

GND pin

In/Out Functional description

1 -STROBE 19 In

The strobe pulse. Read-in of data is
performed at the falling edge of this
pulse.

2 DATA0 20 In

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.

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

This signal is a negativ e pulse indicating
that the printer can accept data again.

11 BUSY 29 Out

A high signal indicates that the printer
cannot receive data.

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

13 SLCT 28 Out

Always at high level when the printer is
powered on.

14 -AFXT 30 In Not used.

31 -INIT 30 In

The falling edge of a negative pulse or a
low signal on this line causes the printer
to initialize. Minimum 50us pulse is
necessary.

32 -ERROR 29 Out

A low signal indicates printer error

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

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION INTERFACE 18

NOTE:

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

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

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

16,33,
19-30

GND - - Signal GND.

15,34 NC - - Not connected.

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

Pin No. Signal name

Return

GND pin

In/Out Functional description

Table 1-14. Connector pin assignment and signals

Pin No. Signal name

Return

GND pin

In/Out Functional de sc r ip t ion

1 HostClk 19 In Host clock signal.
2 DATA0 20 In

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.

These signals are used to transfer the

1284 extensibility request values to the

printer.

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 PtrClk 28 Out Printer clock s ignal.

11

PtrBusy /

DataBit-3,7

29 Out

Printer busy signal and reverse channel

transfer data bit 3 or 7.

12

AckDataReq
/ DataBit-2,6

28 Out

Acknowledge data request signal and

reverse channel transfer data bit 2 or 6.

13

Xflag /

DataBit-1,5

28 Out

X-flag signal and reverse channel

transfer data bit 1 or 5.

14 HostBusy 30 In Host busy signal.

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION INTERFACE 19

NOTE:

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 reverse channel transfer.



Device ID



Stylus C50

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

When IEEE1284.4 is enabled,

[00H] [4EH]
MFG : EPSON;
CMD : ESCPL2, BDC, D4;
MDL : Stylus[SP]C50;
CLS : PRINTER;
DES : EPSON[SP]Stylus[SP]C50;

When IEEE1284.4 is disabled,

[00H] [4BH]
MFG : EPSON;
CMD : ESCPL2, BDC;
MDL : Stylus[SP]C50;
CLS : PRINTER;
DES : EPSON[SP]Stylus[SP]C50;



Stylus C60

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

When IEEE1284.4 is enabled,

[00H] [4EH]
MFG : EPSON;
CMD : ESCPL2, BDC, D4;
MDL : Stylus[SP]C60;
CLS : PRINTER;
DES : EPSON[SP]Stylus[SP]C60;

When IEEE1284.4 is disabled,

[00H] [4BH]
MFG : EPSON;
CMD : ESCPL2, BDC;
MDL : Stylus[SP]C60;
CLS : PRINTER;
DES : EPSON[SP]Stylus[SP]C60;

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

31 -INIT 30 In Not used.

32

-DataAvail /
DataBit-0,4

29 Out

Data available signal and reverse channel

transfer data bit 0 or 4.
36 1284-Active 30 In 1284 active signal.
18 Logic-H - Out Pulled up to +5V via 3. 9K oh m r es is t o r .
35 +5V - Out Pulled up to +5V vi a 3.3K oh m r es is t o r .
17 Chassis GND - - Chassis GND.

16,33,

19-30

GND - - Signal GND.

15,34 NC - - Not connected.

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

Pin No. Signal name

Return

GND pin

In/Out Functional description

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION INTERFACE 20



Stylus C61/C62

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

When IEEE1284.4 is enabled,

For Standard spec.

[00H] [4EH]
MFG : EPSON;
CMD : ESCPL2, BDC, D4;
MDL : Stylus[SP]C62;
CLS : PRINTER;
DES : EPSON[SP]Stylus[SP]C62 ;

For ASIA specs

[00H] [4EH]
MFG : EPSON;
CMD : ESCPL2, BDC, D4;
MDL : Stylus[SP]C61;
CLS : PRINTER;
DES : EPSON[SP]Stylus[SP]C62 ;

When IEEE1284.4 is disabled,

For EAI spec.

[00H] [4BH]
MFG : EPSON;
CMD : ESCPL2, BDC;
MDL : Stylus[SP]C62;
CLS : PRINTER;
DES : EPSON[SP]Stylus[SP]C62 ;

For EURO/ASIA spec.

[00H] [4BH]
MFG : EPSON;
CMD : ESCPL2, BDC;
MDL : Stylus[SP]C61;
CLS : PRINTER;
DES : EPSON[SP]Stylus[SP]C61 ;

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

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

Figure 1-11. USB pin assignment

Table 1-15. Connector pin assignment and signals

Pin No. Signal name I/O Function description

1 VCC - Cable power. Ma x. pow er co nsump tion 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 #1

Pin #3

Pin #2

Pin #4

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION INTERFACE 21

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 started when the remaining input buffer becomes several hundreds 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
with another device at the sa me time across a s ingle point -to-point lin k. The prot ocol is
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.



On
An initial state is IEEE1284.4 communication and data that received it by the time
it is able to take synchroni zation by magic s tring (1284 .4 syn chronou s comman ds)
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.

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION PANEL CONTROL 22

1.4 PANEL CONTROL

The control panel of the EPSON Stylus C50/C60 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 C50/C60, the Stylus C61/62 is compsed of the 3
non-lock type push-button. (2 LEDs is the same as the Stylus C50/C60.)

Figure 1-12. 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 errors have occurred on the printer.

1.4.2 Panel Functions

* This function is not available in printing status.

*1 Not described in the user's manual.

(2)

(1)

Ink cartridge exchange

Power

Error reset

Table 1-16. Panel functions

Switch Function

Error reset SW

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

• Starts the cleaning of printhead (Pushing for 3seconds).

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

Ink cartridge
exchange SW

• Starts the ink cartridge change sequence. *

Table 1-17. Panel functions with power on

Switch Function

Error reset SW

• Start status printings.

Ink cartridge

exchange SW

• Selects IEEE 12 84 .4 mode for para llel I/F. *1

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION PANEL CONTROL 23

1.4.3 Printer Condition and Panel Status

" - " : 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: See 1.4.4 "Error Status" for detailed information.
Blink : On 0.5sec + Off 0.5sec

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

1.4.4 Error Status



Ink end

When the printer runs out the most amount of the ink 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 errors

Carriage control error.

Table 1-18. Printer condition and LED status

Printer status

Indicators

Priority

Power Error

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 or Color) *1

- On 7

Maintenance request
(Ink Overflow Counter
error) *1

Alt Blink Alt Blink 2

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

EPSON Stylus C50/C60/C61/C62 Revision C

PRODUCT DESCRIPTION PANEL CONTROL 24

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 initialization
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 printhead
(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 initialization except I/F
The printer recognized the IEEE 1284.4 “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 except I/F

CHAPTER

2

OPERATING PRINCIPLES

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 26

2.1 Overview

This section describes the operating principles of the Printer mechanism and electrical
circuit boards. Like the previous printers (Stylus COLOR 480), the Stylus C50/C60/
C61/C62 has only the follo win g tw o ci rcuit b oard s and does n ot h ave t he con tr ol p anel
board.

*1



Main board



Stylus C50

: C429 Main board



Stylus C60

: C418 Main/Main-B board

*2



Stylus C61/C62

: C483/C484 Main-B baord



Power supply board

(Stylus C50/C60)

: : C417 PSB/PSE



Power supply board

(Stylus C61/C62)

: : C482 PSH (For 42V)

*1

: Due to this, the Stylus COLOR 480/ 580 does no t have s witches ( Power, Err or reset,
Ink cartridge replacement) and LEDs. However, these printers have them on
C418 Main board instead of the control panel board.

*2

: C418 Main/Main-B board is used for the Stylus C60 and the 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 8 10/820.

2.1.1 Printer Mechanism

The Printer mechanism for the Stylus C50/60 is newly designed. But, the basic
component of the Printer mechanism is almost the same as the previous printer (Stylus
COLOR 480/580). And also, Stylus C61/C62 is success to Stylus C60 and is the same
as its printer mechanism.

These printers consist 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).

Like the previous printers (Stylus COLOR 480/580), these printers are 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. The ASF

unit for the Paper loading mechanism uses rear entry front eject system. And, single
LD roller in Holder shaft unit loads a paper to the Printer mechanism.The Cap unit
which adopts the valveless mechanism is newly designed on these printers as follows.



No porous pad in cap



Cap unit with wiper

Figure 2-1. Printer mechanism block diagram

Compression spring

CR motor

Pad holder

(Paper return

LD pad

Clutch mechanism

CR unit

PF rolle

r

HP/PE Sensor

LD Roller

Pump unit

Paper eject roller

Star wheel roller

CR timing belt

Cap unit

PF motor

Change

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 27

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

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



Stylus C50

Black: 48 nozzles x 1 row (nozzle pitch of row: 1/120 inch)
Color : 45 nozzles x 1 row (Cyan, Magenta, Yellow : 15 nozzles is assigned
for each 3colors in one row45 nozzles x 1 row/col. (nozzle pitch of row: 1/120
inch)

Figure 2-2. Nozzle layout (Stylus C50)



Stylus C60/C61/C62

Black: 48 nozzles x 3 staggered (nozzle pitch of row: 1/360 inch)
Color: 48 nozzles x 1 row/col. (nozzle pitch of row: 1/120 inch)

Figure 2-3. Nozzle layout (Stylus C60/C61/C62)

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,
these printers 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 (6 digits for

the Stylus C50 printhead

, 11 digits code

for

the Stylus C60/C61/C62 printhead

) which adjusts PZT voltage drive features.
So, you are required to store the Head ID pasted on the Printhead into th e 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.

0.21117 (1/120")

#M 15

#M 1

#C 1

#C 15

#Y1

#Y15

#B1

#B48

2.2578(32/360")

16.5

17

0.0706(1/360inch)

0.2117(3/360inch)

0.0706(1/360inch)

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 28

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. B y 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 arou nd the cartridge need le 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.

Figure 2-4. Pr inthead sectiona l drawing

Nozzle selector board

Needle

Ink cartridge

Filter

Cavity

PZT

Nozzle plate

CSIC chip

Elect ric poles for CSIC

* Head ID for the Printhea d

is stored to the EEPROM.

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 29

2.1.2.1 Printing Process

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

1.

Normal state :

When the printing signal is not output from the Main board (C418 Main/Main-B,
C429 Main/C483 Main-B/C484 Main-B), 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 2-5 :
Normal state)

2.

Ejecting state :

When the print signal is output from the Main board (C418 Main/Main-B, C429
Main/C483 Main-B/C484 Main-B), the nozzle selector IC located on the Printhead
latches the data once by 1-byte 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 2-5 : Ejecting state)

Figure 2-5. Printhead printing process

2.1.2.2 Printing Method

For printing dot system, these printers have 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



Stylus C50

This printing mode is developed to improve the print quality on plain paper or
transparencies in low resolution. The multiple shot printing mode uses normal
dot, and the number of dot shot varies from 1 shot to maximum 2 shots
depending on the print data to enable to output sharp image even in a low
resolution.



Stylus C60/C61/C62

This printing mode is developed to improve the print quality on plain paper or
transparencies in low resolution. The multiple shot printing mode uses normal
dot, 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 large dot compos e this mode. The printing dot
size varies according to the print data and this mode enables to output even s harper
image on exclusive paper.

Ink path

PZT

Ink cavity

Nozzle

Nozzle plate

PZT drive voltage

Normal state

Ejecting state

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 30

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 (HP / PE s ens or) etc.
Following figure shows you each component for the CR mechanism.

Figure 2-6. Carriage mechanism (Top view)

The following stepping motor controls the CR mechanism on these printers.

Table 2-1. Carriage motor specification

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 depending on th e running cond ition of the mot ors. It is avail able 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.

.

Figure 2-7. CR home position detection

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

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".

Items Specifications

Type 4-Phase/ 200-Poles HB Stepping motor

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

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 C50/C60)

A6615

(Stylus C61/C62)

CR unit

CR guide shaft

CR timing belt

HP/PE sensor

CR motor

HP detection lever

Right side view

CR HP detection plate

HP detection lever

Low signal

High signal

HP detection lever

CR HP detection plate

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 31

2.1.4 Paper Loading/Feeding Mechanism

The following stepping motor controls the Paper loading/feeding mechanism on these
printers.

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.

*2

: 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. (

The numbers in the following f i gure show you the

order of transmission path.)

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

Figure 2-8. Paper loading/feeding mechanism

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

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

(Stylus C50/C60)

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

(Stylus C61/C62)

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

Driving method Bi-Polar drive

Driver IC

LB1946

(Stylus C50/C60)

A6615

(Stylus C61/C62)

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

Directions

*2

Corresponding functions

Clockwise

• Release the Change lever from the Clutch mechanism

Counterclockwise

• Pick up and feed a paper

• Set the Change lever on the Clutch mechanism

Spur gear 27.2

Spur gear

35.2

Combination
gear 16.32

Spur gear 25.6

Spur gear 10,8
(PF roller)

PE detection

lever

Paper

Low signal

High signal

No paper

Detect a

paper

Spur gear 60
(PF roller)

Spur gear 60
(Paper eject roller)

PF motor pinion gear

Combination
gear 18.28

1

2

3

1

1

4

5

6

Left side view

Right side view

PF motor

Paper eject roller

PF roller

HP/PE sensor

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 32

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 pap er feeding s equ ence, 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 these printers 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 mechanism with the coun te rclockwise
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 clockwise
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 these printers, 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 during
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 loa ding operation.

Following figures (Refer to Figure 2-9/Figure 2-10) show you the ASF paper loading
sequence and the operation of each mechanism.

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 33

Figure 2-9. ASF paper loading sequence (Step 1, 2)

When the PF motor pinion
gear rotates CW direction
(Right side view), the
Change lever pushes
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 are
slipped down from the
paper set position.

This position is the ASF
home position.

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.
As the result, the Clutch
turns back to the
engagement position 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 m otor as
left figure. In this time,
the Change lever is locked
instantaneously by the
protrusion on the bac kside
of the CR unit to change
over from the ASF home
position detection
function to the paper
loading function surely.

Step 1 (ASF Home position) Step 2

Hopper & Paper return plate condition

Hopper & Paper return plate condition

LD roller shaft

Hopper

Paper return plate

Torsion spring 29.1

LD roller

Gear rotation direction (Right side view)

Spur gear 10.8
(PF roller)

Clutch lever

Gear rotation direction (Right side view)

Change lever

Clutch lock tooth

Clutch gear

Clutch

<PF motor drive transmission path for ASF home position setting>

PF motor pinion ge ar (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

To Front side

Tension spri ng 0.143

<PF motor driver transmission path for Clutch lever release>

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

the print

ASF hopper
release lever

Compression
spring 2.50

ASF frame

Clutch gear

Clutch lock tooth

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 34

Figure 2-10. ASF paper loading sequence (Step 3, 4)

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.

While the LD roller rotates
CW direction (right side
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
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 loading
operation.
Then, when the rolling LD
roller & the Clutch come at
the above “Step1” position,
the Clutch lever is locked
with the Change lever again.
In this time, the drive of the
PF motor is in terrupted and
the drive is transmitted only
to the PF roller side for the
paper feeding sequence.

Step 3

Step 4

Hopper & Paper return plate condition

Hopper & Paper return pl at e condition

ASF hopper
release lever

Compression
spring 2.50

ASF frame

Paper return
plate

Gear rotation direction (Right side view)

ASF hopper
release lever

LD roller shaft

<PF motor driver transmission path for picking up a paper>

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

Gear rotation direction (Right side view)

<PF motor driver transmission path for paper loadin g>

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

1

2

3

1

2

3

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 35

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.

*1

: Different from the Paper eject roller for the Stylus Photo 810/820, the plastic

shaft is used for the Stylus C50/C60/C61/C62.

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.

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 roller
& the Star wheel in the printing operation & the paper feed sequence.

Figure 2-11. Paper feeding mechanism

Spur gear 60
(PF roller)

Spur gear 60
(Paper eject roller)

PF motor pinion gear

Left side view

PF motor

PF roller

Paper eject roller

Paper guide roller Star wheel

Transmission path (Left side view) :

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

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 36

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 lists
the function for each mechanism.

* L ike the previous printers (Stylus COLOR 480/580), these printers
adopt 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.

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

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.

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 these printers as follows.

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

Figure 2-12. Cap mechanism

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

*1

and prevent that the air bubbles occur in CL

sequence

*2

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

without the porous pad.

*1 : The diameter of the ink eject hole is smaller than that of Stylus COLOR 480

/580.

*2 : The cap is modified so that the ink flows with air bubbles to the ink eject hole

in the ink absorption sequence more easily.

Table 2-4. Function for each mechanism

Mechanism Function

Capping mechanism *

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

prevent the nozzle from increasing viscosity.

Wiper mechanism

This is to remove the foreign material and unnecessary ink on
the nozzle plate of the Printhead.

Pump mechanism

This is to eject the ink from the in k cartri dg e, th e i nk c avity a nd
the cap to the Waste drain ink pad.

Carriage lock mechanism

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

For Stylus COLOR 480/580

Porous pad

For Stylus C50/C60/C61/C62

Ink eject hole

Ink eject hole

The cap type of the Stylus C50 is
the same one as the Stylus C60.
However, the ca p si ze is di ffe rent
between the Stylus C50 and the
Stylus C60/C61/C62.

CR home position

CL position
(valve closing condition)

Ink absorption position
(valve opening condition)

Printing area

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 37

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 from the ink
cartridge, the ink cavity by the Pump unit. Following figure shows you the
mechanism for the wiping operation.

Figure 2-13. Wiper mechanism

The CR unit moves to the wiper
setting position on the rightmost
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 moves
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.)

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

Extension spring

0.523

.
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.

Wiping position

Step 2

Wiper setting position

Released position
(Bottom position)

Step 4

Step 1

Step 3

Capping position
(CR home position)

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.

Protrusion

Not latched

Latched

Latched

Released

Protrusion of the CR unit

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 38

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 these printers, 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.

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

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

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

Figure 2-14. Pump mechanism

Transmission Path :

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 2-15. PF motor drive transmission path to the Pump unit

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

Directions (*1) Functions

Clockwise

• Absorbs the ink by the Pump unit

• Release the Change lever from the Clutch mechanism

Counterclockwise

• Non operation

Cap unit side

Waste drain
Ink pad side

Change Lever

Spur Gear 35.2

Cap unit

Pump unit

Spur gear 60
(PF roller)

Combination

Gear 18.28

Spur Gear 25.6

PF roller

Spur Gear 27.2

(Pump Unit Gear)

Spur gear 60
(Paper eject roller)

PF motor pinion gear

Combination
Gear 16.32

Left side view Right side view

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 39

2. Carriage lock operation by the Change lever
Unlike the previous printer (Stylus COLOR 680), these printers do 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 2-9
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 C50 takes 105 seconds to complete the initial ink
charge sequence and consumes 1/8 of the brand-new black ink cartridge & 1/8 of
the brand-new color ink cartridge. And also, the Stylus C60 takes 80 seconds for
the initial ink charge and consumes about 1/4 of the brand-new black ink cartridge
& about 1/8 of the brand-new colo r ink cartridge. If the power is turned off during
the initial ink charge on these printers, the CL1' will be performed at next power
on timing.



Manual Cleaning
The Stylus C50 provides three types of manual cleaning, and the Stylus C60/C61/
C62 provides four types of manual clea ni ng t o clean air bub bles, 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: 0.21g, Color Ink: 0.21g

(Stylus C50)

Black Ink: 0.155g, Color Ink: 0.155g

(Stylus C60/C61/C62)

- 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: 0.94g, Color Ink: 0.94g

(Stylus C50)

Black Ink: 0.80g, Color Ink: 0.80g

(Stylus C60/C61/C62)

- 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.

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Overview 40



CL1"(There is this mode only for the Stylus C60.)

- Ink absorption

Black Ink: 1.55g, Color Ink: 1.55g (Stylus C60/C61/C62)

- 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: 0.45g, Color Ink: 0.45g (Stylus C50)
Black Ink: 0.55g, Color Ink: 0.55g (Stylus C60/C61/C62)

- 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 for each printer is as follows.

- Stylus C50 : CL1 → CL2 → CL1' (In case that the printer keeps the power off

condition more than the specific period, the CL order is CL2 → CL1' → CL1
CL2 → CL1'.)

- Stylus C60 : CL1 → CL1' → CL2 (In case that the printer keeps the power off

condition more than the specific period, the CL order 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.



Timer Cleaning
Like the previous printers (Stylus COLOR 480/580), these printers do not have
Timer IC and Lithium battery which is used for the backup power source for
Timer IC. So, these printers manage 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 th e PC's timer and it co nsists o f year, mon th
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
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 0.5 ml of the ink is consumed in the timer cleaning. (0.25 ml of each
black and color ink is consumed.)



Flashing
These printers perform 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 printing and the specific small amoun t of the ink
is ejected in the cap based on the periodical flashing timer.



Periodical large amount Flashing
This is due to avoid the increment of black ink’s viscosity in the printhead
nozzle during the continuous printing and l arge amount of the ink is eje cted in
the cap based on the periodical large mount flashing timer.

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 41

2.2 Electrical Circuit Operating Principles

The electric circuit of the Stylus C50/60/C61/C62 consists of the following boards.



Main board:

Stylus C50

: C429 Main Board

*1

Stylus C60

: C418 Main/Main-B Board

*2

Stylus C61/C62

: C483/C484 Main-B Board

*3



Power supply board:

Stylus C50/C60

: C417 PSB/PSE

Stylus C61/C62

: C482 PSH (For 42V)

*1 : C429 Main board is used for the Stylus C50. Followings show you the
specification of the C429 Main board.

1) C429 Main : 3 in 1 ASIC + Sol dering S OJ RO M (from the f irst mass producti on)
*2 : C418 Main/Main-B board is used for both the Stylus C60 and the Stylus 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 ASIC + Sol dering S OJ RO M (from the f irst mass producti on)

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

- For the Stylus Photo 810/820

1) C418Main/Main-B : 3 in 1 ASIC + Soldering SOJ ROM
(from the first mass production)

*3 : C483/C484 Main-B board is used for both the Stylus C61/C62. 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 C418 Main/Main-B/C429 Main/C483
Main-B/C484 Main-B, C417 PSB/PSE and C482 PSH. Refer to Figure 2-16/Figure2­17 for the major connection of the each boards and their roles.

Figure 2-16. Electric Circuit 1 (Stylus C50/C60)

Figure 2-17. Electric Circuit 2 (Stylus C61/C62)

C418 MAIN/Main-B

& C429 Main

C417 PSB/PSE

HP/PE Sensor

Head Driver Board

PF Motor

CR Motor

Printer Mechanism

+42VDC

+5VDC

C483/C484 Main-B

C482 PSH

HP/PE Sensor

Head Driver Board

PF Motor

CR Motor

Printer Mechanism

+42VDC

+3.3VDC

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 42

2.2.1 C417 PSB/PSE board, C482 PSH board

The power supply boards of the Stylus C50/60/C61/C62 use a RCC (Ringing Chalk
Converter) circuit, which generates +42VDC 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

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.

2.2.1.1 C417 PSB/PSE board

Figure 2-18. C417 PSB/PSE board block diagram (Stylus C50/C60)

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.

Voltage Application

+36VDC

(Stylus C50)

• Motors (CR Motor, PF Motor)

• Printhead common voltage

• Printhead nozzle selector 42V drive voltage

+42VDC

(Stylus C60/C61/
C62)

• Motors (CR Motor, PF Motor)

• Printhead common voltage

• Printhead nozzle selector 42V drive voltage

+5VDC

(Stylus C50/C60)

• C418/C429/C483/C484 Main control circuit logic

•Sensor/LED

+3.3VDC

(Stylus C50/C60)

• C483/C484 Main control circuit logic

•Sensor/LED

+5VDC Line
Over Voltage
Limitation

+42VDC Line
Over Voltage
Limitation

+42VDC Line
Drop Limitation

+42VDC Line
Constant
Control

Smoothing
Circuit

+5V Regulator

Power Drop
Delay Circuit

Photo Coupler

TRANS(T1)

PSC Signal
from Main board

ZD53

+5VDC+42VDC

IC51

R91,R92,R93,Q91,ZD51

ZD52,87

ZD90

C84,Q84

C51

Q1C11

D51

Q2,Q3,Q31

Abnormally Feed
back circuit

Main
Switching
Circuit

Smoothing
Circuit

Over Current
Protection

Filter Circuit

Full Wave
Rectifier circuit

DB1

L1,C1

F1,TH1

AC Input

PC1

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 43

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
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 R18 &
R28 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.

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 monitore d by R91, R 92, R93, Q9 1 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.



+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 36V, 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.

2

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 44

2.2.1.2 C482 PSH board

Figure 2-19. C482 PSH board block diagram (Stylus C61/C62)

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 through the starting resis tor R18, R28,
R17 & R19 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.

* Unlike the Stylus C50/C60, IC51 which generates +5VDC is not on the C482 PSH
board for the Stylus C61/C62. +5VDC is generated on the C484/C484 Main-B
board.

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 of the + 42V line is mo nitored by R91, 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.

+5VDC Line
Over Voltage
Limitation

+42VDC Line
Over Voltage
Limitation

+42VDC Line
Drop Limitation

+42VDC Line
Constant
Control

Smoothing
Circuit

Photo Coupler

TRANS(T1)

PSC Signal from
Main board

ZD53

+5VDC Signal from
Main baord

+42VDC

R91,R92,R93,Q91,ZD51

ZD52,87

ZD90

C51

Q1C11

D51

Q2,Q3,Q31

Abnormally Feed
back circuit

Main Switching
Circuit

Smoothing
Circuit

Over Current
Protection

Filter Circuit

Full Wave
Rectifier circuit

DB1

R1,L1,C1

F1,TH1

AC Input

PC1

2

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 45



+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 36V, 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 over voltage protection circuit :
The output voltage level of the +5VDC line, which is generat ed on t he C4 83/C484
Main-B board, is monitored by ZD53.
If the output voltage level of +5DC line exceeds +7V, this circuit stops the
operation of the switching FET Q1 v i a 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.

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 46

2.2.2 C418 MAIN/MAIN-B/C429 Main Board

The logic circuit of the C418 Main/Main-B/C429 Main 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

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



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



Stylus C50

: 1Mbit D-RAM is mounted on the Main board.



Stylus C60

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



One ASIC controls the all functions on the Main board.
See figure 2-17. for the C418 Main/Main-B board block diagram.

Figure 2-20. Block diagram for the C418 Main/Main-B/C429 Main board

5VDC 3.3VDC

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

ASIC (IC1)
D-RAM (IC5/IC4)
P-ROM (IC6/IC5)
Parallel controller (IC7)
Common driver (IC9/IC19)

P-ROM
(SOJ) 8M
(IC6/IC5)

Address

Data

D-RAM 4M

(IC5/IC4)

E01A21CB

CPU (IC1)

Reset IC

(IC2)

EEPROM

(IC3)

Motor Driver

(IC10)

Motor Driver

(IC11)

Common

Driver (IC9/IC19)

Parallel I/F IC

(IC7)

Q2&Q3

CN3
USB

CN4

CN7

CN12

CN9

CN8

CN1 Parallel I/F

Head

PF Motor

CR Motor

HP/PE Sensor

CR2

* There is difference of IC location between the Stylus C50 and the Stylus C60.
(A/B) : A means the location for the Stylus C50.
B means the location for the Stylus C60.

* There is difference of IC location between the Stylus C50 and the Stylus C60.
(A/B) : A means the location for the Stylus C50.
B means the location for the Stylus C60.

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 47

2.2.2.1 Main Elements

Table 2-8/Table 2-9 shows the function of the each main elements on C418 Main
board.

Table 2-8. Main elements (S tylus C50)

IC Location Function

CPU
E01A24CA

IC1

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

DRAM IC5 Bus= 16 bit, 1Mbit DRAM

EEPROM IC3

1kbit EEPROM

• Default value setting

• Parameter backup

Reset IC
BN6150F-E2

IC2

Reset IC

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

• For +36V, reset when +29.2V is detected

Common Driver
E09A39RA

IC9

Head drive control HIC

• Generates head common voltage.

Motor Driver
(LB1946-K)

IC10/IC11 PF/CR motor drive IC

Parallel I/F IC
PDL1284P11DGG

IC7 IEEE1284 parallel I/F transceiver IC.

Table 2-9. Main elements (S tylus C60)

IC Location Function

CPU
E01A21CB

IC1

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

DRAM IC4 Bus= 16 bit, 4Mbit DRAM

EEPROM IC3

1kbit EEPROM

• Default valu e setting

• Parameter backup

Reset IC
BN6150F-E2

IC2

Reset IC

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

• For +42V, reset when +36.3 V is detected

Common Driver
E09A29LA

IC19

Head drive control HIC

• Generates head common voltage.

Motor Driver
(LB1946-K)

IC10/IC11 PF/CR motor drive IC

Parallel I/F IC
74LVX1612B4

IC7 IEEE1284 parallel I/F transceiver IC.

Table 2-9. Main elements (Stylus C60)

IC Location Function

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 48

2.2.2.2 Printhead Driver Circuit

The printhead driver circuit consists of the following two components:



Head common driver circuit (Common driver IC9/IC19 & Wave amplifier
transistor Q2, Q3)



Nozzle selector IC on the printhead driver.

The common driver (IC9/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
transferred to the nozzle 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 2-21 for the printhead driver
circuit block diagram.



Head common driver circuit
The basic drive waveform is gener a te d in t he co mmon dr iv er ( IC9 / IC1 9) b ased on
the following 12 signal lines output from the 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 (IC9/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.



Nozzle selector circuit
Printing data is allocated to the six rows (the number of th e head nozzle rows ) an d
converted into serial data by the CPU (IC1). Then the 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.

Figure 2-21. Printhead driver circuit

CPU
(IC1)

Common

Driver(IC19)

Nozzle

Selector IC

+4.2V

Head
Drive
Pulse

CN9

CN8

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

COM
COM

SCK
CH
SI1 ~ SI6
SP

COM
VHV
LAT
NCHG
CSCK
COI
CRST
CSDA
CVDD
THM

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

VCC45

NPNB

FB

PNPB

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

1

F1

+3.3V

19

17
15

14

Q2

Q3

15
13

11

9
2

1

2
4
8

6
10
11
12
14
15
13

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 49

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 cur rent valu e 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.

Figure 2-22. PF motor driver circuit block diagram

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 form and the current valu e 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 drive
current to 0 [A] and the motor drive is turned off to save the power consumption.

Figure 2-23. CR motor driver circuit block diagram

CPU
(IC1)

CLK
DATA
SET
VREF1
VREF2
ST

LB1946

(IC10)

CN7

+42v

+5V

+5V

MD
CR1
CR2
E1
E2

OUTA

OUTA-

OUTB

OUTB-

VBB
VCC

PF-SCLK

PF-DATA

PF-LAT

C-P47

C-P25

138
139
140
3

144

23
22
21
27
16
20

24
25
18

3

12

7
6
9
8

1
28

1
3
2
4

CPU
(IC1)

CLK
DATA
SET
VREF1
VREF2
ST

LB1946

(IC11)

CN12

+42v

+5V

+5V

MD
CR1
CR2
E1
E2

OUTA

OUTA-

OUTB

OUTB-

VBB

VCC

CR-SCLK
CR-DATA

CR-LAT

C-P46

C-P25

141
142
143
4

144

23
22
21
27
16
20

24
25
18

3

12

7
6
9
8

1
28

1
3
2
4

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 50

2.2.2.5 Reset Circuit

Reset IC (IC2) on the main board monitors the two voltage: +5V for the logic line and
+36V

(Stylus C50)

/ +42V

(Stylus C60)

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/29.2V
on +36V line

(Stylus C50)

/ 36.3V on +42V line

(Stylus C60)

, 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/29.2V
on +36V line

(Stylus C50)

/ 36.3V on +42V line

(Stylus C60)

, 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.

.

Figure 2-24. Reset circuit block diagram

Main line for reset IC has the following function.



OUT1: Interrupt signal



OUT2: Reset line



IN: +36Vline monitoring line

(Stylus C50)

+42V line monitoring line

(Stylus C60)



VCC: +5V line monitoring line

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.

Figure 2-25. EEPROM circuit diagram

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.

IC2

BH6150F-E2

IC1

E01A24CA

+5V

+36V/

+42V

8
7
6
5

MEWS

VCC
OUT1
OUT2

NC1
IN
NC2
GND

1
2

3
4

38

37
36

MRES

NMI
RESET

EEPROM-93C

(IC3)

E01A24CA

(IC1)

+5V

VCC
NC
ORG
GND

CS
SK

DI

DO

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

42
41
40
39

1
2
3
4

8
7
6
5

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 51

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 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

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 drive circuit lowers the
drive voltage: When the temperature lowers, the head drive circuit rises the drive
voltage.

The block diagram for the sensor circuit is shown below.

:

Figure 2-26. Sensor circuit diagram

2
1

3

IC1

E01A24CA

CN4

HP/PE Sensor

CN8

Head FFC

+5V

+5

C-P15

C-P40

29

13

THM

GND

HPPV
GND
HPPE

6

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 52

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

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 2-10. 3.3VDC drive chips & 5VDC drive chips



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.

Figure 2-27. Block diagram for the C483/C484 Main-B board

5VDC 3.3VDC

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

ASIC (IC8)
D-RAM (IC1/IC2)
P-ROM (IC7)
Parallel controller (IC4)
Common driver (IC10)
EEPROM (IC5)

P-ROM

(SOJ) 4M

(IC7)

Address

Data

D-RAM 4M

(IC1/IC2)

E01A21CB

CPU (IC1)

Reset IC

(IC3)

EEPROM

(IC5)

Motor Driver

(IC6)

Common

Driver (IC10)

Parallel I/F IC

(IC4)

Q1&Q2

CN3
USB

CN4

CN7

CN12

CN9

CN8

CN1 Parallel I/F

Head

PF Motor

CR Motor

HP/PE Sensor

CR1

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 53

2.2.3.1 Main Elements

Table 2-11 shows the function of the each main elements on C483/C484 Main-B
board.

Table 2-11. Main elements (Stylus C61/C62)

IC Location Function

CPU
E01A37**/39**

IC8

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

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

EEPROM IC5

1kbit EEPROM

• Default value setting

• Parameter backup

Reset Regulator IC
BN6150F-E2

IC3

Reset IC

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

• For +42V, reset when +35.8V is detected

Common Driver
E09A29LA

IC10

Head drive control HIC

• Generates head common voltage.
Motor Driver IC6 PF/CR motor drive IC
Parallel I/F IC

SN74LVCZ16128
4AGT

IC7 IEEE1284 parallel I/F transceiver IC.

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 54

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 tr ansferred 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 2-28 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 the CPU(IC8); A0-A4, CLK1, CL K2,
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 number of th e head nozzle rows ) an d
converted into serial data by the CPU (IC8). Then the 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.

Figure 2-28. Printhead driver circuit

CPU
(IC8)

Common

Driver(IC10)

Nozzle

Selector IC

+42V

Head
Drive
Pulse

CN9

CN8

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

COM
COM

SP

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

VCC45

NPNB

FB

PNPB

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

1

F1

+3.3V

19

17
15

14

Q1

15
13

1

4

3
2

F2

Q2

7
6

SI3
SI2
SI1

NCHG

LAT

CSDA

SI6
SI5
SI4

5

SCK

11

9

CH

6

8

14

COM

2

VHV

4

GND2

GND2
GND2

1

3

COI

CRST

CVDD

CSCK

THM

11
12
15

10

13

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 55

2.2.3.3 PF/CR Motor Driver Circuit

The motor driver IC (IC6) on the Main board 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.

Figure 2-29. PF/CR motor driver circuit block diagram

CN7

+5V

OUT1A

OUT1B-

OUT2A

OUT2B-

VREG

24
26
21
19

1
3
2
4

CN12

1
3
2
4

3
5
44
42

10

VCP

VBB

CLK1
DATA1
STB1

VREF

OSC

ENABLE1

SLEEP

CP1

STB2

DATA2

CLK2

ENABLE2

CP1

VREGB

CPU

(IC8)

A6615

(IC6)

+5V

CLK1

STB1

VREF

27,18

6,41

28

30
29
40

38

39

32,33,36

15

31

37

16

7

8

9

17

+42V

CLK4M

PF_SCLK

PF_DATA

PF_LAT

CR_SCLK

CR_DATA

CR_LAT

C_P47/46

88
89
90
91
92
93
35,34

87

CPU

(IC8)

+5V

27,18

6,41

28

29
40

38

39

32,33,36

15

31

37

7

8

9

17

+42V

CLK4M

PF_SCLK

PF_DATA

PF_LAT

CR_SCLK

CR_DATA

CR_LAT

C_P47/46

88
89
90
91
92
93
35,34

87

13

SW

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 56

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.

.

Figure 2-30. 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 line



VCC: +5V line monitoring line

*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.

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.

Figure 2-31. EEPROM circuit diagram

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.

IC3

M62510FP

IC8

E01A37CB

+3.3V

+42V

4

+5V

VCC
Vin1
Vin2

3
12

IN

GND
GND
GND
GND

5

1
7
8
14

VOUT1

VOUT2

VD2

Vres
VOUT2
VOUT1

+1.5V

37
30
29

MRES
NMILVL
RESET

EEPROM-93C

(IC5)

E01A37CB

(IC8)

+.3.3V

VCC
NC
ORG
GND

CS
SK

DI

DO

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

136
135
134
133

1
2
3
4

8
7
6
5

EPSON Stylus C50/C60/C61/C62 Revision C

Operating Principles Electrical Circuit Operating Principles 57

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

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 (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.)



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 drive circuit lowers the
drive voltage: When the temperature lowers, the head drive circuit rises the drive
voltage.

The block diagram for the sensor circuit is shown below.

:

Figure 2-32. Sensor circuit diagram

2
1

3

IC8

E01A37CB

CN4

HP/PE Sensor

CN8

Head FFC

+3.3V

+3.3V

C-P15

C-P40

130

13

THM

GND

SENV
GND
HP

33

CHAPTER

3

TROUBLESHOOTING

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Overview 59

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.

Figure 3-1. Troubleshooting flowchart

*1 : Stylus C50/C60
*2 : Stylus C61/C62

START

Unit level troubleshooting

Unit repair

Assemble & Adjustment

END

Table 3-1. Motor, coil resistance

Motor Location Check point Resistance

CR motor CN12

Pin 1 and 3
Pin 2 and 4

7.8 Ohms

±

10%

(at 25

°

C/ phase)

PF motor CN7

Pin 1 and 3
Pin 2 and 4

6.0 Ohms ±10%

*1

(at 25 °C/ phase)

5.4 Ohms ±10%

*2

(at 25 °C/ phase)

Table 3-2. Sensor check point

Sensor name Check point Signal level Switch mode

HP/PE Sensor CN4/Pin 1 and 2

Less than 0.7V

Off

• Out of CR home
position

• No paper

More than 2.4V

On

• Within CR home
position

• Detect the paper

Thermistor

(THM)

TH1 (on the Head

driver board)

Analog signal 10 K (at 25 °C)

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Troubleshooting with LED Error Indications and Status Monitor 3 Message 60

3.2 Troubleshooting with LED Error Indications
and Status Monitor 3 Message

This section describes the LED indication, the STM3 message* and the erro r de tection
condition when the printer detects an error condition in

each sequence/operat ion (such as

the power on sequence, the paper loading/fe eding sequence, the ink absorption sequence,

* : The explanations for STM3 of the Stylus C50/C61/C62 are the same as the Stylus C60
completely except the followings.

1) Printer name

2) Figure of the printer

3) T-code for Bk ink cartridge (SC50 : T026, SC60/C61 : T028, SC62 : T040)

4) T-code for Col. ink cartridge (SC50/60/C61 : T029, SC62 : T041)

Table 3-3. Error indication and status monitor 3

Printer status

Indicators

Status monitor 3 message Condition for error detection

Power Error

Fatal error Off On

This error is detected when ;

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

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

Maintenance request Alt Blink Alt Blink

This error is detected when the protection
counter A stored into EEPROM reaches the
limit (23270 points).

EPSON Stylus C50/C60/C61/C62 Revision C

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

Paper jam error On On

This error is detected when ;

1) the end of a paper is not correctly detected
with the HP/PE se nsor in the paper f eeding
sequence.

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

Paper out error On On

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

Table 3-3. Error indication and status monitor 3

Printer status

Indicators

Status monitor 3 message Condition for error detection

Power Error

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Troubleshooting with LED Error Indications and Status Monitor 3 Message 62

No ink cartridge
(Black or Co lor)

On On

This error is detected when ;

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

2) the ink cartridge is defective.

Ink end error On-> Blink

[Bk I/C]

On -> Blink

[Col I/C]

On -> Blink2

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 0.2s ec + On 0.2sec + Off 0.4sec

Table 3-3. Error indication and status monitor 3

Printer status

Indicators

Status monitor 3 message Condition for error detection

Power Error

Stylus Photo 720 Revision B

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

Ink low condition On-> Blink

[Bk I/C]

Blink -> Blink

[Col I/C]

Blink -> Blink2

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.

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 i f 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).

Communication error Off Off

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

" 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 0.2s ec + On 0.2sec + Off 0.4sec

Table 3-3. Error indication and status monitor 3

Printer status

Indicators

Status monitor 3 message Condition for error detection

Power Error

EPSON Stylus C50/C60/C61/C62 Revision C

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

Error before the ink

replacement CL

On On

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

Error before the

initial ink charge

On On

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

Table 3-3. Error indication and status monitor 3

Printer status

Indicators

Status monitor 3 message Condition for error detection

Power Error

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 65

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.

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 possible 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,

disassembly/

reassemble it carefully by referring to Chapter 4.

Table 3-4. Fatale error condition and possible cause

Error condition

LED indication

STM3 message

Occurrence

timing

CR position at the

power on timing

Defective

unit/part name

Possible cause Check table

Fatal error

Power : Off

Error : On

General error

Power on

Outside HP

CR motor

The CR motor connector cable comes off.

Refer to Table 3-5

The CR motor is defective.
The CR motor connector cable is damaged.

Holder sha ft unit The Paper return plate disturbs the rotation of the LD roller.

PF motor

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

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

Pump unit The Compression spring 1.764 comes off.

Anywhere

Main board The Main board is defective.
Main frame The Main frame is deformed.

Operation -

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

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 66

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

Power on

Outside HP

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

CR motor

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 cab le is damaged.

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.

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

Holder shaft unit

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

1. Reassemble the ASF unit to the printer.

PF motor

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 conne ctor cable is damaged.

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.

Pump unit

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

1. Replace the Printer mechanism with new one.

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

Paper guide upper/

left

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

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

LD roller

Paper return plate

Comp. spring 1.764

Change lever

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 67

Power on

Anywhere

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

Main frame

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

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

Operation

-

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

Main frame

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

1. Replace the Printer mechanism with new one.

Front frame

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

1. Replace the Front frame with new one.

Table 3-6. Paper jam 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

Paper jam error

Power : On

Error : On

Paper jam

Power on

Inside HP

CR motor

The CR motor connector cable comes off.

Refer to Table 3-7

The CR motor is defective.
The CR motor connector cable is damaged.

Holder sha ft unit The Paper return plate disturbs the rotation of the LD roller.

PF motor

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

Pump unit The Compression spring 1.764 comes off.

Anywhere

ASF unit The Compression spring 29.1comes off.

LD roller unit

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 correctl y.

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 68

Paper jam error

Power : On

Error : On

Paper jam

Operation

Outside HP Holder shaft unit

The Torsion spring 0.22 for HP sensor lever comes off.

Refer to Table 3-7

The HP/PE sensor cable is not placed correctl y.

-

ASF unit The Compression spring 29.1comes off.

Front frame

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

Holder sha ft unit The Torsion spring 0.22 for PE sensor lever comes off.

Paper eject roller unit

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

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

Table 3-6. Paper jam 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

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 69

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

Power on

Inside HP

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

CR motor

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 cab le is damaged.

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.

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

Holder shaft unit

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

1. Reassemble the ASF unit to the printer.

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

PF motor

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. 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.

Power on

Inside HP

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

Pump unit

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

1. Replace the Printer mechanism with new one.

LD roller

Paper return plate

Comp. spring 1.764

Change lever

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 70

Power on

Anywhere

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

ASF unit

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

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

Holder shaft unit

1. Check if the Torsion sprin g 0. 22 comes off on the both
HP sensor lever and PE sensor le ver.

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.

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

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.

Operation

Outside HP

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

Holder shaft unit *

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

2. .Place the HP/PE sensor cable correctly.

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

Torsion spring 29.1

Torsion sprig 0.22

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 71

Operation

-

When a top of a paper at the correct
timing during the p a per loading
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.

ASF unit

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

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

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

Front frame **

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. Reassemble the Star wheel correctly.

2. Replace the Front frame with new one.

3. Reassemble the Front frame correctly.

Paper eject roller

unit **

1. Check if the Paper eject roller shaft is correctly
assembled.

2. Check if the Spur gear 60 comes off.

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

2. Replace the Printer mechanism with new one.

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

Holder shaft unit

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

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

The top of a paper is not load ed to the PF
roller.

Paper guide upper/

left **

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

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

* The CR unit can move to home position even if the Tension spri ng 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 det ect ed.
** In case that the paper jam error occurs in each operation , the jammed paper contacts the nozzle surface of the Printh ead and the Printhead may be damaged .

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

Torsion spring 29.1

Spur gear 60

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 72

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

Paper out error

Power : On

Error : On

Paper not loaded

correctly

Operation -

ASF unit

The Compression spring 2.50 comes off.

Refer to Table 3-9

The Tension spring 29.1 comes off.

Holder sha ft unit

The Tension spring 0.143 comes off.
The Dowel in Clutch comes off.
The Clutch tooth is damaged.
The Clutch is damaged.
The friction of the LD roller is lowered.
The Paper return plate disturbs the rotation of the LD roller.

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

PF motor

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

Pump unit

The Compression spring 1.764 comes off.
The tip of the Change lever is damaged.

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

Operation

-

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

ASF unit

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

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

Comp. Spring 2.50

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 73

Operation

-

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

ASF unit

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

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

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.)

Holder shaft unit

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 .

4. Check if the Clutch is damage.

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.

Paper guide upper/

left

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

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

Pump unit

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

1. Replace the Printer mechanism with new one.

The LD roller is not set to the 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.

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

Torsion spring 29.1

Tension spring 0.143

Dowel of the LD roller

Clutch tooth

Comp. spring 1.764

Change lever

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 74

Operation

-

The LD roller does not attempt to load a
paper during the p aper load ing seque nce.
And also, the PF motor and the Spur gear
60 does not rotate at all.

Holder shaft unit *

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

1. Reassemble the ASF unit to the printer.

PF motor *

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 cab le is damaged.

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.

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

Holder shaft unit

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

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 removed. To
remove severe smear, staple a cloth
moistened with alcohol to a post card and
clean the roller in the same manner.

*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.

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

LD roller

Paper return plate

LD roller

Non-adhesive Area

(Use a post card
for the base sheet)

Staplers

Cloth moiste ned
with alcohol

CL Sheet

Adhesive Area

This side down

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 75

Table 3-10. Communication 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

Communication

error

Power : Off

Error : Off

Communication error

Power on Anywhere

Main board The Main boar d is defective.

Refer to Table 3-11

Power supply board

The Power supply connector cable comes off.
The Power supply connector cable is damaged.
The Power supply board is defective.

Operation -

Main board

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

Parallel cable

The parallel cable does not support the bi-directiona l
transportation.

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

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

Power on

Anywhere

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

Power supply

board

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. 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.

Operation

-

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 indicate d
with STM3.

Main board

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

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

Parallel/USB cable

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

1. Connect the Parallel/USB cable to the printer
and the PC.

Printer driver

1. Check if the Stylus C60 printer driver is used for the
printer job.

1. Install the Stylus C60 printer driver in the PC.

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 76

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

LED indication *

STM3 message

Occurrence

timing

CR position at the

power on timing

Unit/Part name Possible cause Check table

Error before the

initial ink charge is

performed

Power : On

Error : On

Incorrectly installed

cartridge

Power on

Inside HP

Ink cartridge The 1st ink cartridge is defective.

Refer to Table 3-13

Main board

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

Error before the ink

replacement CL is

performed

Power : On

Error : On

Installed ink cartridge

cannot be recognized

Anywhere

Ink cartridge

2nd or more ink cartridg es is defe c tiv e.

The ink cartridge is compatible or counterfeit one.

Power : On

Error : On

Black & Color ink

cartridge not installed

Ink cartridge

The ink cartridge is defective.

The ink cartridge is compatible or counterfeit one.

Ink out error

Power : On

Error : On

Black & Color ink out

Ink cartridge

The ink amount in I/C is end condition.

The ink cartridge is defective.

* 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.

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

Power on

Inside HP

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

Ink cartridge

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

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

Main board

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

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

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 77

Power on

Anywhere

The printer does not perform the ink
replacement CL and the error is
indicated with LEDs an d STM3.

Ink cartridge

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

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

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

Ink cartridge

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.

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

2. Replace the ink cartridge with brand-new

one.

Table 3-14. Error regarding paper loading / ejecting without LEDs and STM3

Error condition

LED indication
STM3 message

Occurrence

timing

CR position at the

power on timing

Unit/Part name Possible cause Check table

Multiple papers

are always loaded

Power : -

Error : -

No appear

Operation -

ASF unit The Tension spring 29.1 comes off.

Refer to Table 3-15

5” x 8” index card

is not ejected

correctly

Front frame The Eject roller holder (white part) comes off.

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

Operation

-

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

ASF unit

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

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

Any error condition is not indicated with
the LEDs and STM3. But, 5” x 8” index
card is not ejected correctly.

Front frame

1. Check if the Eject roller holder (white part) comes off. 2. Reassembly the Eject roller holder (white
part).

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

Torsion spring 29.1

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 78

Table 3-16. Abnormal noise

Error condition

LED indication

STM3 message

Occurrence

timing

CR position at the

power on timing

Unit/Part name Possible cause Check table

Abnormal noise

Power : -

Error : -

No appear

Anywhen Anywhere

CR unit The lubricati on amount of the grease is insuf ficient.

Refer to Table 3-17

Front frame

The Front frame is bent up.
The lubrication amount of the grease is insuffici ent.

Paper guide upper/left The Paper guide upper/left comes off.

Pump unit The Change lever is not moved smoothly.

Table 3-17. Check point for the abnormal noise

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

Anywhen

Anywhere

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

CR unit

1. Check if the grease on the CR guide sha f t is suffi cient. 1. Wipe off the remaining grease on the CR

guide shaft and lubricate it on its shaft.

Front frame

1. Check if the grease on the Front frame is su ffic ient. 1. Wipe off the remaining grease on the Front

frame and lubricate it on its frame.

Pump unit

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

The bottom of the CR unit contacts the
surface of the Front frame.

Front frame

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

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

Paper guide upper/

left

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

the Main frame.

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

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 79

Table 3-18. Poor printing quality

Error condition

Occurrence

timing

CR position at the

power on timing

Phenomenon Unit/Part name Possible cause Check table

Poor printing

quality

Operation -

Dot missing

No printing

Misalignment

Mixed color

Cap unit

The seal rubber portio n of the Cap has any foreign material
or any damage.

Refer to Table 3-19

The spring under t he Ca p co m e s of f .
The Pump tube comes off from the bottom of the Cap.

The Extension spring 0.523 (for the Slider cap) comes off.
The Extension spring 0.383 (for the Slider lock lever) comes

off.
The Slider lever is damaged.

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

Main board The Main board is defective.

Printhead

The Printhead has any foreign material on the n ozz le surface.
The Printhead is defective.
The Head FFC is damaged.

Vertical banding

against the CR

movement direction

CR motor The accuracy of the CR motor is lowered.

CR unit

The CR guide shaft has any stain or any damage.
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.

Front frame

The lubrication amount of the grease is insufficient.
The Front frame is bent up or down.

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

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 80

Poor printing

quality

Operation -

Horizontal banding

against CR movement

direction

PF motor The accuracy of the PF motor is lowered.

Refer to Table 3-19

PF roller unit

The PF roller has any foreign material.
The PF roller is damaged
The Spur gear 60 is damaged.

Printer driver The printer driver setting is not suitable.

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

Star wheel mark

Front frame

The Front frame is bent down.
The Star wheel co mes off.

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

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

Ink blur

Printer driver The printer driver setting is not suitable.

Printhead The Head ID is not input correctly.

Ink stain

Front frame

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

Lower housing The Lower housing has t he ink stain somewhere.

Paper eject roller unit

The Paper eject roller has ink stain somewhere.
The Spur gear 60 comes off.

Paper guide upper/left The Paper guide upper/left has ink stain somewhere.

PF roller unit The PF roller has ink s t ain somewhere.

Printhead

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

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

Table 3-18. Poor printing quality

Error condition

Occurrence

timing

CR position at the

power on timing

Phenomenon Unit/Part name Possible cause Check table

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 81

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

Operation

-

[Phenomenon 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.

[Phenomenon 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 i f the
several CLs are performed.

[Phenomenon 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.

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

[Phenomenon 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
every CL operation.

Cap unit

1. Check if there is any foreign material around the seal
rubber parts on the Cap un it.

2. Check if any damage is observ ed around the seal rubber

parts on the Cap unit.

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

unit correctly.

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

Cap unit correctly

5. Check if the Extension spring 0.523 comes off f rom the

Slider cap.

6. Check if the Extension spring 0.383 comes off f rom the

Slider lock lever.

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

2. Replace the Printer mechanism with new one.

3. Replace the Printer mechanism with new one.

4. Replace the Printer mechanism with new one.

5. Reassemble the Extension spring 0.523

correctly.

6. Reassemble the Extension spring 0.383

correctly.

Seal rubber portion

Compression spring

Pump tube

connection point

Exp. spring 0.523

Exp. spring 0.383

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 82

Operation

-

[Phenomenon 6]
In the CL sequence, the ink is ejected to
the Waste drain ink pad. Bu t, dot
missing/misalignment occurs on all
nozzle in the printing and is not solv ed in
the several CLs.

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

Cap unit

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

Ink cartridge

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

one.

Printhead

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

surface of the Printhead.

2. Check if the Head FFC is connecte d to t he CN4 on the

Main board or Head FFC.

3. Check if the Head FFC is doggoned.

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

check pattern.

1. Perform the wiping operation.

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

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.

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

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

CR unit

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 enou gh on the surface of the CR

guide shaft.

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.

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 cloth and lubricate G-58 on its
shaft. Refer to Figure 6-4.

4. Reassemble the CR shaft guide correctly.

5. Replace the ink cartridge cover with new one.

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

CR movement

direction

G-58 lubrication

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 83

Operation

-

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

Front frame

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

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

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.

Printhead

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

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

Micro banding appears horizontally
against the CR movement dir e c tio n an d
it appears with the same width.

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

PF roller unit

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. 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.

Printer driver &

exclusive paper

1. Check if the suitable paper is used acc ord in g t o t he p r inter
driver setting.

1. Use the suitable paper according to the printer
driver setting.

Printhead

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

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

Star wheel mark against the CR
movement direction

Front frame

1. Check if the Star wheel comes off.

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

1. Reassemble the Star wheel correctly.

2. Replace the Front frame with new one.

Paper eject roller

unit

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

1. Reassemble the Paper eject roller correctly.

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

G-58 lubrication

CR movement

direction

EPSON Stylus C50/C60/C61/C62 Revision C

Troubleshooting Unit Level Troubleshooting 84

Operation

-

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

LD roller unit

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

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 removed. To
remove severe smear, staple a cloth
moistened with alcohol to a post card and
clean the roller in the same manner.
As for the cleaning sheet, refer to page 59
“Remedy of the Paper out error“

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

Printing is blurred.

Printer driver &

exclusive paper

1. Check if the suitable paper is used acc ord in g t o t he p r inter
driver setting.

1. Use the suitable paper according to the printer
driver setting.

Printhead

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

1. Input 11 digits code of the Head ID into the
EEPROM by using the Adjustment program.

A paper stains with ink

Front frame

1. Check if the Front frame has the ink stain somewhere. 1. Clean the ink stain of the Front fr ame
carefully with the soft cloth.

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

Lower housing

1. Check if the Lower housing has the ink stain somewhere. 1. Clean the ink stain of the Lower housing
carefully with the soft cloth.

Paper eject roller

unit

1. Check if the Paper eject roller has i nk stain somewhere. 1. Clean the ink stain of the Paper eject roller
carefully with the soft cloth.

1. Check if the Spur gear 60 comes off. 1. Replace the Printer mechanism with new one.

Paper guide upper/

left

1. Check if the Paper guide upper/left has ink stain

somewhere.

1. Clean the ink stain of the Paper guide upper
/left carefully with the soft cloth.

PF roller

1. Check if the PF roller has ink stain somewhere. 1. Clean the ink stain of the PF roller carefully
with the soft cloth.

Printhead

1. Check if the wiping operation is correct performed.

2. Check if the Printhead cover has the ink drop.

1. Replace the Printer mechanism with new one.

2. Clean the ink drop on the Printhead cover
carefully with the soft cloth.

A top of a paper get wrinkled. ASF unit

1. Check if the Hopper pad is co rrectly pasted on the dent of
the Hopper.

2. Check if the LD pad is correctly pasted on the dent of the

Paper return plate.

1. Replace the he Ho pper pad with new one.

2. Replace the LD pad with new one.

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

Occurrence

timing

CR position

Detailed phenomenon

Defective

unit/part name

Check point Remedy

LD roller

CHAPTER

4

DISASSEMBLY AND ASSEMBLY

EPSON Stylus C50/C60/C61/C62 Revision C

Disassembly and Assembly Overview 86

4.1 Overview

This section describes procedures for disassembling the main co mponents of the Stylus
C50/C60/C61/C62. 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 C50/C60/C61/
C62...

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 ink comes
into contact with your skin, wash it off with soap and water
immediately. If irritation occurs, contact a physician.



When a lithium battery is installed on the main board of this
printer, make sure to observe the following instructions when
serving the battery:

1.Keep the battery away from any metal or other batteries so that
electrodes of the opposite polarity do not come in contact with
each other.

2.Do not heat the battery or put it near fire.

3.Do not solder on any part of the battery. (Doing so may result in
leakage of electrolyte from the b attery, bur ning or expl osion. The
leakage may affect other devices close to the battery.)

4.Do not charge the battery. (An explosion may be generated insi de
the battery, and cause burning or explosion.)

5.Do not dismantle the battery. (The gas inside the battery may hurt
your throat. Leakage, burning or explosion may also be resulted.)

6.Do not install the battery in the wrong direction. (This may cause
burning or expl osion.)

EPSON Stylus C50/C60/C61/C62 Revision C

Disassembly and Assembly Overview 87

W ARNING

 Danger of explosion if the battery is incorrectly replaced.

Replace only with the same or equivalent type recommended by
the manufacture. Dispose the used batteries according to
government’s law and regulations.



Avant de commencer, assure vous que l’imprimante soit eteinte
et que le cordon d’alimentation soit debranche.



Lorsque vous changez la pile au lithium, assurez vous que la
nouvelle respecte bien les caracteristiques requises.



Lorque que vous installez la pile au lithium, faites attention a
l’inserer dans le bon sens en respectant la polarite.



Veillez a jeter les piles usagees selon le reglement local.



Ne rechargez pas les piles au lithium.

CAUTION

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.

CAUTION



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.

EPSON Stylus C50/C60/C61/C62 Revision C

Disassembly and Assembly Overview 88

4.1.2 Tools

Use only specified tools to avoid damaging of the printer.

4.1.3

Screws

* : This screw is for securing the Printhead. However, this is used only for the
Stylus C60/C61/C62.

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

Table 4-2. Screws

No Name and specific ation Outward form pcs

1 C.B.S. SCREW, 3 x 6, F/Zn

11

2 C.C.S-TITE SCREW, 3 x 6, F/Zn

1

3 C.B.P-TITE SCREW, 3 x 8, F/Zn

3

4 C.B.S. SCREW, 3 x 14, F/Zn

2

5 C.B.S-TITE (P4), 3 x 6, F/Zn

1

6 +BIND B-TITE SEMS W2, 2.5 X 5, F/Zb

1 *

7 C.B.(O). SCREW, 4 x 5, F/Zg

1

8 C.B.P-TITE SCREW, 3 x 10, F/Zn

1

EPSON Stylus C50/C60/C61/C62 Revision C

Disassembly and Assembly Overview 89

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

Item Check Point Status

Main Unit

Self-test Is the operation normal ?



Checked



Not necessary

On-line Test Is the printing successful?



Checked



Not necessary

Printhead

Is ink discharged normally from
all the nozzles?



Checked



Not necessary

Carriage
Mechanism

Does it move smoothly?



Checked



Not necessary

Is there any abnormal noise
during its operation?



Checked



Not necessary

Is there any dirt or foreign
objects on the CR Guide Shaft?



Checked



Not necessary

Is the CR Motor at the correct
temperature?
(Not too heated?)



Checked



Not necessary

Paper Feeding
Mechanism

• Is paper advanced smoothly?

• No pap er ja mm ing?

• No paper skew?

• No multiple feeding?

• No abnormal noise?



Checked



Not necessary

Is the PF Motor at correct
temperature?



Checked



Not necessary

Is the paper path free of any
obstructions?



Checked



Not necessary

Adjustment

Specified
Adjustment

Are all the adjustment done
correctly?



Checked



Not necessary

Lubrication

Specified
Lubrication

Are all the lubrication made at
the specified points?



Checked



Not necessary

Is the amount of lubrication
correct?



Checked



Not necessary

Function ROM Version Version:



Checked



Not necessary

Packing

Ink Cartridge

Are the ink cartridges installed
correctly?



Checked



Not necessary

Protective
Materials

Have all relevant protective
materials been attached to the
printer?



Checked



Not necessary

Others

Attachments,
Accessories

Have all the relevant items been
included in the package?



Checked



Not necessary

Table 4-3. Work Completion Check

Classifi-

cation

Item Check Point Status

EPSON Stylus C50/C60/C61/C62 Revision C

Disassembly and Assembly Difference on Printer Machanism between SC60 and SC61/C62 90

4.2 Difference on Printer Machanism between
SC60 and SC61/C62

The Stylus C61/C62 is successor to the Stylus C60, and is the same as its printer
mechanism basically. However, some modi ficaitons has been taken on S tylus C61/ C62
since the first mass production. Followings show you the difference on the printer
mechanism between Stylus C60 and Stylus C61/C62.

1) SW botton
The shape/material of the SW button is changed as below.

- Stylus C60 : It is assembled to the M/B mounting plate by the two hooks of the
SW button

- Stylus C61/C62 : It is assembled to the Upper housing by the two hooks of the
SW button

Figure 4-1. Difference of SW button

2) Main board
The size/connector position of the main board is changed as below.

Figure 4-2. Difference of main board

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 changed for the Stylus C61/C62.

4) P/S baord
a. The type of the AC cable is changed to AC inlet on the Stylus C61/C62.
b. The Stylus C60 has the Power supply radiator on the P/S board. However, the
Stylus C61/C62 does not have it. (Screw position on the P/S board is the same as
the Stylus C60.)



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.

Stylus C61/ C6 2

Stylus C60

Fixture position
on upper housing



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.

CAUTION



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.)

Stylus C61/ C62

Stylus C60

EPSON Stylus C50/C60/C61/C62 Revision C

Disassembly and Assembly Difference on Printer Machanism between SC60 and SC61/C62 91

5) Ink cartridge

The T-code of the ink cartridge is as follows.
Stylus C60 (for all subsi diaries ) & Styl us C61 (for Asi an su busi diaries ) : Bk - T02 8,
Col - T029
Stylus C62 (for European/U.S subsidiaries) : Bk - T040, Col - T041

CAUTION



If T028/T029 is installed on Stylus C62, the printer detects ink
end error. (This caution is for EURO/U.S.)

EPSON Stylus C50/C60/C61/C62 Revision C

Disassembly and Assembly Disassembly 92

4.3 Disassembly

The flowchart below shows step-by-step disassembly procedur es. When disassembling
each unit, refer to the page number shown in the figure.

Figure 4-3. Disassembling flowchart

Upper housing removal

ASF unit removal

Waste drain ink pad removal

Printhead removal

CR motor removal

PSB/PSE unit removal

Circuit board removal

CR unit removal

Holder shaft unit removal

*1) Lower housing removal (Including Pa per eje ct rol le r removal *3)

PF roller removal

Ink system unit removal

PF motor removal

Page 113

Page 93

Page 95

Page 100

Page 103

Page 97

Page 110

Page 106

Page 114

Page 125

Page 123

Page 120

Page 101

*2)

* 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

units.

*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

*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.

*3) Unlike the paper eject roller shaft for the Stylus Photo 810/820, you cannot remove or replace the Paper eject roller from Printer mechanism.

This is because you cannot use the removed paper eject roller /spur gear again. Moreover, these parts are not established for service part.