Epson cx4300, cx 4400, cx 5500, cx 5600, dx4400 Diagram
...
SERVICE MANUAL
Color Inkjet Printer
EPSON STYLUS CX4300/CX4400/CX5500/
CX5600/DX4400/DX4450
SEMF07-004
Notice:
All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.
The contents of this manual are subject to change without notice.
All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being
informed of them.
The above not withstanding, SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof.
EPSON is a registered trademark of SEIKO EPSON CORPORATION.
General Notice: Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their
respective owners. EPSON disclaims any and all rights in those marks.
Copyright © 2007 SEIKO EPSON CORPORATION.
Imaging Products CS, PL & Environmental Management
PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1) personal injury and 2) damage to the equipment.
DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures
preceded by DANGER Headings.
WARNING Signals a precaution which, if ignored, could result in damage to equipment.
The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.
DANGER
1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR
PROCEDURES.
2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL
ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.
3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO
DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER
ELECTRONIC COMPONENTS.
4. WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE TO WEAR GLOVES TO AVOID INJURY 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 VOLTAGE 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 NON-APPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.
6. WHEN USING COMPRESSED AIR PRODUCTS; SUCH AS AIR DUSTER, FOR CLEANING DURING REPAIR AND MAINTENANCE, THE USE OF SUCH
PRODUCTS CONTAINING FLAMMABLE GAS IS PROHIBITED.
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 experienced repair technicians, and attention should be given to the precautions on the preceding page.
Manual Configuration
This manual consists of six chapters and Appendix.
CHAPTER 1. PRODUCT DESCRIPTIONS
Provides a general overview and specifications of the product.
CHAPTER 2. OPERATING PRINCIPLES
Describes the theory of electrical and mechanical operations of the
product.
CHAPTER 3. TROUBLESHOOTING
Describes the step-by-step procedures for the troubleshooting.
CHAPTER 4. DISASSEMBLY / ASSEMBLY
Describes the step-by-step procedures for disassembling and
assembling the product.
CHAPTER 5. ADJUSTMENT
Provides Epson-approved methods for adjustment.
CHAPTER 6. MAINTENANCE
Provides preventive maintenance procedures and the list of Epsonapproved lubricants and adhesives required for servicing the product.
CHAPTER 7. APPENDIX
Provides the following additional information for reference:
• Connector Summary
• Electrical Circuits
Symbols Used in this Manual
Various symbols are used throughout this manual either to provide additional
information on a specific topic or to warn of possible danger present during a
procedure or an action. Be aware of all symbols when they are used, and always read
NOTE, CAUTION, and WARNING messages.
W A R N I N G
C A U T I O N
C H E C K
P O I N T
A D J U S T M E N T
R E Q U I R E D
Indicates an operating or maintenance procedure, practice or condition
that, if not strictly observed, could result in injury.
Indicates an operating or maintenance procedure, practice, or condition
that, if not strictly observed, could result in damage to, or destruction of,
equipment.
May indicate an operating or maintenance procedure, practice or
condition that is necessary to accomplish a task efficiently. It may also
provide additional information that is related to a specific subject, or
comment on the results achieved through a previous action.
Indicates an operating or maintenance procedure, practice or condition
that is necessary to maintain the product’s quality.
Indicates that a particular task must be carried out according to a certain
standard after disassembly and before re-assembly, otherwise the quality
of the components in question may be adversely affected.
Revision Status
Revision Issued Date Description
A April 23, 2007 First Release
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
CONTENTS
Chapter 1 PRODUCT DESCRIPTION
1.1 Overview .............................................................................................................. 9
1.1.1 Features...................................................................................................... 9
1.2 Specifications ..................................................................................................... 10
1.2.1 Printing Specifications............................................................................. 10
1.2.2 Scanning Specifications........................................................................... 15
1.2.3 Standalone Copying Specifications......................................................... 16
1.2.4 Electrical Specifications .......................................................................... 18
1.2.5 Environmental Conditions ....................................................................... 18
1.2.6 Durability................................................................................................. 19
1.2.7 Acoustic Noise......................................................................................... 19
1.2.8 Safety approvals (Safety standards/EMI) ................................................ 19
1.2.9 Interface ................................................................................................... 19
1.2.10 Control Panel ......................................................................................... 20
1.2.11 Button Functions in Stand-alone Copy.................................................. 21
1.2.12 Errors and Panel Status.......................................................................... 21
1.2.13 Power Save Mode .................................................................................. 22
1.2.14 Nozzle Check Pattern Print ................................................................... 22
1.2.15 Printer Initialization (T.B.D) ................................................................. 22
Chapter 2 OPERATING PRINCIPLES
2.1 Overview ............................................................................................................ 24
2.2 Printer Mechanism.............................................................................................. 24
2.2.1 Printhead Specifications .......................................................................... 25
2.2.2 Carriage Mechanism................................................................................ 25
2.2.3 Paper Feeding Mechanism ...................................................................... 26
2.2.4 Ink System Mechanism ........................................................................... 27
2.3 Scanner Mechanism............................................................................................ 28
2.3.1 Scanner Carriage Mechanism .................................................................. 28
2.4 Electrical Circuit Operating Principles............................................................... 30
2.4.1 Power Supply Board................................................................................ 30
2.4.2 Main Board .............................................................................................. 30
Chapter 3 TROUBLESHOOTING
3.1 Overview ............................................................................................................ 33
3.2 Error Indications and Fault Occurrence Causes................................................. 33
3.3 Troubleshooting.................................................................................................. 37
3.3.1 Superficial Phenomenon-Based Troubleshooting ................................... 53
Chapter 4 DISASSEMBLY/ASSEMBLY
4.1 Overview ............................................................................................................ 61
4.1.1 Precautions .............................................................................................. 61
4.1.2 Tools........................................................................................................ 61
4.1.3 Work Completion Check......................................................................... 62
4.1.4 Caution After Repair (T.B.D).................................................................. 63
4.2 Disassembly Procedures..................................................................................... 64
4.3 Printer Section.................................................................................................... 65
4.3.1 Paper Support Assy. ................................................................................ 65
4.3.2 Stacker Assy............................................................................................ 65
4.3.3 Document Cover/ASF Cover/Support Arm ............................................ 66
4.3.4 Scanner Unit/Middle Case/Panel Unit .................................................... 67
4.4 Removing Printer Mechanism............................................................................ 71
4.5 Removing Board................................................................................................. 73
4.5.1 Main Board.............................................................................................. 73
4.6 Disassembling Printer Mechanism..................................................................... 75
4.6.1 Printhead.................................................................................................. 75
4.6.2 Hopper..................................................................................................... 78
4.6.3 CR Scale.................................................................................................. 79
4.6.4 CR Motor................................................................................................. 80
4.6.5 CR Unit/Timing Belt............................................................................... 81
4.6.6 Ink System removal................................................................................. 83
4.6.7 Power Supply Board................................................................................ 85
4.6.8 EJ Frame Assy/EJ Roller......................................................................... 86
4.6.9 Main Frame ............................................................................................. 87
4.6.10 LD Roller/ASF Unit.............................................................................. 90
4.6.11 Waste Ink Pads ...................................................................................... 92
4.6.12 PF Roller................................................................................................ 93
4.6.13 PF Motor................................................................................................ 94
6
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
4.7 The Shortest Way to Remove the Main Frame. ................................................. 95
4.8 Scanner Section .................................................................................................. 96
4.8.1 Upper Scanner Housing........................................................................... 96
4.8.2 CIS Assy./CIS Carrier Assy./Scanner FFC ............................................. 97
4.8.3 Scanner Motor Unit/Driven Pulley.......................................................... 99
Chapter 5 ADJUSTMENT
5.1 Adjustment Items and Overview (T.B.D) ........................................................ 101
5.1.1 Servicing Adjustment Item List (T.B.D) ............................................... 101
5.1.2 Replacement Part Adjustment Items (T.B.D)........................................ 103
5.2 Adjustment by Using Adjustment Program (T.B.D)........................................ 105
5.2.1 Head angular adjustment ....................................................................... 105
5.2.2 Top Margin Adjustment ........................................................................ 106
5.2.3 Bi-D Adjustment ................................................................................... 106
5.2.4 First Dot Adjustment ............................................................................. 107
5.2.5 PF Band Adjustment.............................................................................. 107
Chapter 6 MAINTENANCE
6.1 Overview .......................................................................................................... 109
6.1.1 Cleaning ................................................................................................. 109
6.1.2 Service Maintenance ............................................................................. 109
6.1.3 Lubrication ............................................................................................ 111
Chapter 7 APPENDIX
7.1 Connector Summary......................................................................................... 116
7.1.1 Major Component Unit.......................................................................... 116
7.2 Exploded Diagram / Parts List ......................................................................... 119
7.3 Electrical Circuits............................................................................................. 120
7
PRODUCT DESCRIPTION
CHAPTER
1
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
1.1 Overview
This unit provides the three primary functions; computer-connected printer, scanner,
and stand-alone copy machine, and is designed for home/personal use.
Its main functions are described below:
1.1.1 Features
Printer functions
As a printer, this unit achieves high-quality output at high speed on plain papers.
It includes the following features:
Maximum print resolution: 5760 (H) x 1440 (V) dpi
Separate ink cartridge for each color
ASF (Auto Sheet Feeder) holds up to 80 cut sheets
(paper thickness: 0.11 mm)
Borderless printing with EPSON special media
This unit use pigment ink which is water resistant, light-fast and ozone
resistant
Scanner functions
This unit provides scan mode so that data is scanned and transferred to a connected
computer or to e-mail via application software like EPSON SMART PANEL.
CIS sensor requires no warm-up period, which makes scanning more convenient
and allows for a more compact scanner. Additional features include the following:
Copy margin is automatically selected from two options, related to paper type
and paper size; Standard Copy (3mm-margin), or Borderless copy.
Simultaneous use of functions
Printer functions and scanner functions are independent and can therefore be
operated simultaneously from a connected computer.
Easy-to-use control panel
The control panel that has five buttons including power button and three LEDs
simplifies operation.
Exterior
Use of a CIS sensor makes the scanner body more compact.
Also, the control panel on the left side makes the printer distinctive in appearance
but still easier to use.
Dimension: 452 mm (W) x 347 mm (D) x 203 mm (H)
(including rubber feet with Paper Support and Stacker closed)
Weight: 5.0 kg (without ink cartridges)
Maximum optical resolution: 600 x 1200 dpi
Scan gradations: 16 bits (input), 1 or 8 bits (output)
Stand-alone copy functions
Paper size can be selected from two or three options:
Table 1-1. Paper Size
Market Paper Size
EAI Letter/4”x6”
Europe/Asia/Pacific A4/4”x6”
Latin Letter/A4/4”x6”
Enlarge/Reduce factor can be selected from two options; actual size (100%)
or “Fit to page”
Figure 1-1. External View
PRODUCT DESCRIPTION Overview 9
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
1.2 Specifications
1.2.1 Printing Specifications
Table 1-2. Printing Specifications
Item Specification
Print method On-demand ink jet
Nozzle configuration
Print direction
Print resolution
Control code
Internal font (T.B.D)
Input buffer size 32 Kbytes
Paper feed method Friction feed, using one ASF (Auto Sheet Feeder)
Paper path Top feed, front out
Paper feed rates (T.B.D)
PF interval Programmable in 0.017 mm (1/1440 inch) steps
Note * : Those resolution can only be selected in the printer driver.
Black: 90 nozzles
Color: 29 nozzles x 3 (Cyan, Magenta, Yellow)
Bi-directional minimum distance printing
(logic seeking)
Horizontal x Vertical (dpi)
• 360 x 120 • 720 x 720
• 360 x 360 • 1440 x 720
• 360 x 720
• ESC/P Raster command
• EPSON Remote command
Character code: Alphanumeric with expanded
Font: EPSON original font
• High quality mode, 19.05-mm feed
• High speed mode, continuous feed
*
• 5760 x 1440
graphics (PC437)
ASCII, 20H to 7FH only
Alphanumeric font: Courier
98.8 mm/sec (3.89 inch/sec)
352.8 - 6.35 mm/sec (13.89-0.25 inch/sec)
*
*
INK CARTRIDGE SPECIFICATIONS
The product numbers of the EPSON ink cartridges for this printer are shown below.
Table 1-3. Product No. of Ink Cartridges
Color US Latin West Europe CISMEA Asia
Black T0881
Cyan T0882
Magenta T0883
Yellow T0884
T0731
T0901
T0732
T0902
T0733
T0903
T0734
T0904
T0711 T0921
T0712 T0922
T0713 T0923
T0714 T0924
Shelf life (T.B.D):
Two years from production date (if unopened), six months after opening package.
Storage Temperature
Table 1-4. Storage Temperature (T.B.D)
Situation Storage Temperature Limit
When stored in individual boxes
When installed in main unit
-30 oC to 40 oC
o
F to 104oF)
(-22
-20 oC to 40 oC
(-4oF to 104oF)
1 month max. at 40 oC (104oF)
Dimension
12.7 mm (W) x 68 mm (D) x 47 mm (H)
C A U T I O N
The ink cartridge cannot be refilled.
Do not use expired ink cartridges.
The ink in the ink cartridge freezes at -16 °C (3.2 oF). It takes
about three hours under 25 °C (77
o
F) until the ink thaws and
becomes usable.
T0731
T0911
T0732
T0912
T0733
T0913
T0734
T0914
PRODUCT DESCRIPTION Specifications 10
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
PRINT MODE
Print Mode
Fast Economy*2360 x 120
Economy 360 x 120
Normal 360 x 360
Fine
Super Fine 360 x 720
Photo (720)
Best Photo
(1440)
Photo RPM
(5760)
Resolution
(H x V) dpi
360 x 720
(Color)
720 x 720
(Black)
720 x 720
(Color)
1440 x 720
(Black)
720 x 720
1440 x 720
5760 x 1440
Table 1-5. Print Mode (Color)
Dot Size
*1
(cps)
Eco
(360 cps)
Eco
(360 cps)
VSD1
(165 cps)
VSD2’
(240 cps)
VSD2
(240 cps)
VSD3’
(240 cps)
VSD2
(240 cps)
VSD3
(240 cps)
VSD3
(240 cps)
Plain paper -
Plain paper -
Plain paper -
Plain paper -
Premium Glossy Photo Paper
Glossy Photo Paper
Plain paper -
Premium Glossy Photo Paper
Glossy Photo Paper
Matte Paper-Heavyweight
Ultra Glossy Photo Paper
Premium Glossy Photo Paper
Premium SemiGloss Photo Paper
Glossy Photo Paper
Matte Paper-Heavyweight
Ultra Glossy Photo Paper
Premium Glossy Photo Paper
Premium SemiGloss Photo Paper
Glossy Photo Paper
Media
Border-
less
OK
OK
OK
-
Table 1-6. Print Mode (Black)
Print Mode
Fast Economy*2360 x 120
Economy 360 x 120
Normal 360 x 360
Fine 720 x 720
Photo (720) 720 x 720
Best Photo
(1440)
Note *1: CPS: Characters per second
*2: This mode skips a sequence to prevent paper skewing in paper loading sequences.
Resolution
(H x V) dpi
1440 x 720
Dot Size
*1
(cps)
Eco
(360 cps)
Eco
(360 cps)
VSD1
(165 cps)
VSD2
(240 cps)
VSD2
(240 cps)
VSD3
(240 cps)
Media
Plain Paper -
Plain Paper -
Plain Paper -
Plain Paper -
Matte Paper-Heavyweight OK
Matte Paper-Heavyweight OK
Border-
less
Note *1: CPS: Characters per second
*2: This mode skips a sequence to prevent paper skewing in paper loading sequences.
PRODUCT DESCRIPTION Specifications 11
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
PAPER SUPPORT
The table below lists the paper type and sizes supported by the printer. The Supported paper type and sizes vary depending on destinations (between EAI, EUR, and Asia).
Table 1-7. Paper Support
Paper Type Paper Size
Thickness
(mm)
Legal 215.9 x 355.6 mm (8.5”x14”)
Letter 215.9 x 279.4 mm (8.5”x11”) Y - Y - Y -
A4 210 x 297 mm (8.3”x11.7”) Y - Y - Y -
B5 182 x 257 mm (7.2”x10.1”) - - Y - Y -
Plain paper
A5 148 x 210 mm (5.8”x8.3”) - - Y - Y -
0.08-0.11
Half Letter 139.7 x 215.9 mm (5.5"x8.5”) Y - - - - -
A6 148 x 210 mm (5.8”x8.35”) Y - Y - Y -
User Defined
50.8-329 x 127-1117.6 mm
(2-12.6” x 5-44”)
Premium Inkjet Plain Paper A4 210 x 297 mm (8.3”x11.7”) 0.11
Premium Bright White Paper (EAI)
Bright White Inkjet Paper (Euro, Asia)
Letter 215.9 x 279.4 mm (8.5”x11”) 0.11
A4 210 x 297 mm (8.3”x11.7”) 0.13
Letter 215.9 x 279.4 mm (8.5”x11”)
A4 210 x 297 mm (8.3”x11.7”) Y Y Y Y Y Y
Ultra Premium Glossy Photo Paper (EAI)
Ultra Glossy Photo Paper (Euro, Asia)
8” x 10” 203.2 x 254 mm Y Y Y - Y -
5” x 7” 127 x 178 mm Y Y Y Y Y Y
0.30
4” x 6” 101.6 x 152.4 mm Y Y Y Y Y Y
3.5” x 5” 89 x 127 mm Y Y Y Y Y Y
Letter 215.9 x 279.4 mm (8.5”x11”)
A4 210 x 297 mm (8.3”x11.7”) Y Y Y Y Y Y
8” x 10” 203.2 x 254 mm Y Y Y - Y -
Premium Photo Paper Glossy (EAI)
Premium Glossy Photo Paper (Euro, Asia)
5” x 7” 127 x 178 mm Y Y Y Y Y Y
4" x 6
"
101.6 x 152.4 mm Y Y Y Y Y Y
0.27
16:9 wide 102 x 181 mm Y Y Y Y Y Y
3.5” x 5” 89 x 127 mm Y Y Y Y Y Y
Weight
64-90 g/m
(17-24 lb.)
80 g/m
(21 lb.)
90 g/m
(24 lb.)
92.5 g/m
(25 lb.)
290 g/m
(77 lb.)
255 g/m
(68 lb.)
2
2
2
2
2
2
EAI EUR Asia
*1
P
*1
B
*1
P
*1
B
*1
P
Y - Y - Y -
Y - Y - Y -
- - Y - Y -
Y - - - - -
- - Y - Y -
Y Y Y - Y -
Y Y Y - Y -
*1
B
PRODUCT DESCRIPTION Specifications 12
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
Table 1-7. Paper Support
Paper Type Paper Size
Letter 215.9 x 279.4 mm (8.5”x11”)
Photo Paper Glossy (EAI)
Glossy Photo Paper (Euro, Asia)
A4 210 x 297 mm (8.3”x11.7”) Y Y Y Y Y Y
5” x 7” 127 x 178 mm - - Y Y Y Y
4” x 6” 101.6 x 152.4 mm Y Y Y Y Y Y
Letter 215.9 x 279.4 mm (8.5”x11”)
Premium Photo Paper Semi-Gloss (EAI)
Premium Semigloss Photo Paper (Euro, Asia)
A4 210 x 297 mm (8.3”x11.7”) Y Y Y Y Y Y
4” x 6” 101.6 x 152.4 mm Y Y Y Y Y Y
Premium Presentation Paper Matte (EAI)
Matte Paper-Heavyweight (Euro, Asia)
Envelopes
*1
*1
Letter
A4
8” x 10
#10
#DL
#C6
215.9 x 279.4 mm (8.5”x11”)
210 x 297 mm (8.3”x11.7”) Y Y Y Y Y Y
” 203.2 x 254 mm - - - - - -
104.8 x 241.3 mm (4.125”x9.5”)
110 x 220 mm - - Y - Y -
114 x 162 mm - - Y - Y -
Note 1: “Y” in the “P” column stands for “the paper type/size is Supported”.
“Y” in the “B” column stands for “Borderless printing is available”.
Thickness
(mm)
0.25
0.27
0.23
-
Weight
258 g/m
(68 lb.)
250 g/m
(66 lb.)
167 g/m
(44 lb.)
45-75 g/m
(12-20 lb.)
2
2
2
2
EAI EUR Asia
*1
P
*1
B
*1
P
*1
B
*1
P
Y Y Y - Y -
Y Y Y - Y -
Y Y Y - Y -
Y - Y - Y -
*1
B
C A U T I O N
Make sure that the paper is not wrinkled, fluffed, torn, or folded.
The curve of paper must be 5 mm or below.
When printing onto an envelope, be sure that the flap is on the
long edge and is folded.
Do not use the adhesive envelopes.
Do not use double envelopes and cellophane window envelopes.
PRODUCT DESCRIPTION Specifications 13
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
PRINTING AREA
The printing area for this printer is shown below.
Table 1-8. Printing Area (Margins)
Print mode Paper size
Standard print
Any size 3 mm 3 mm 3 mm 3 mm
Left Right Top Bottom
Envelope 5 mm 5 mm 3 mm 20 mm
A4/Letter to
Borderless
print
2L/5” x 7”
2.54 mm* 2.54 mm*
4” x 6”/L 2.82 mm* 3.60 mm*
Note * : The margins for Borderless print are margins that bleed off the edges of paper.
Left margin
Right margin
Top margin
Left margin
Margin
2.96 mm* 4.02 mm*
Right margin
Top margin
Left margin
Printing area
Paper Feed Direction
Right margin
Figure 1-3. Printing Area on Envelopes
Top margin
Bottom margin
Printing area
Paper size
Paper Feed Direction
Bottom margin
Standard Print
Printing area
Bottom margin
Borderless Print
Figure 1-2. Printing Area on Cut Sheet
PRODUCT DESCRIPTION Specifications 14
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
1.2.2 Scanning Specifications
Table 1-9. Scanner Specifications
Product type Flatbed color image scanner
Scanning method Scanning of fixed document with mobile scan head
Sensor CIS
Maximum scan area 8.5” x 11.7” (216 mm x 297 mm)
Document size A4 or US letter
Maximum effective pixels 5,100 x 14,040 pixels (600 dpi)
Resolution
Scanning resolution 50 to 4800 dpi (selectable in 1-dpi steps), 7200 dpi, 9600 dpi
Gradations (pixel depth)
Scanning speed
Light source RGB Three Color LED
Control commands ESC/I D7
Gamma correction Two user-defined levels
Main scan: 600 dpi
Sub scan: 1200 dpi with Micro Step
Each color pixel has 16-bit input and either 1-bit or 8-bit
output
600 dpi
Color: Approx. 15 msec/line
Monochrome: Approx. 5 msec/line
SCANNING AREA
Table 1-10. Image Scanning Area
RW
(readable width)
216 mm (8.5”) 1.5 mm ± 1 mm 297 mm (11.7”) 1.5 mm ± 1 mm
Scan area
Scan bed
Original
(face down)
(out-of-range left margin)
OLM
RL
(readable length)
RL OTM
a
Scan direction
First pixel
(out-of-range top margin)
RW
OLM
Original's top left
alignment position
OTM
Figure 1-4. Image Scanning Area
PRODUCT DESCRIPTION Specifications 15
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
1.2.3 Standalone Copying Specifications
SUPPORTED PAPER TYPES AND SIZES
Table 1-11. Supported Paper Types and Sizes
Paper Type
UI Available Paper Type
Plain Paper
Plain Paper
Photo Paper
Note* : EAI models: Letter size.
Euro/Asia models: A4 size.
Latin models: Selectable between Letter and A4.
(Turning On the printer while holding down B&W Copy Start button selects Letter size,
and turning On the printer while holding down Color Copy Start button selects A4 size.)
Bright White Inkjet Paper
Premium
Premium Ink Jet Plain Paper (Euro/Asia)
Glossy Photo Paper (Euro, Asia)
Photo Paper Glossy (EAI)
Premium Glossy Photo Paper (Euro/Asia)
Premium Photo Paper Glossy
Premium Semigloss Photo Paper (Euro/Asia)
Premium Photo Paper Semi-Gloss (EAI)
Ultra Glossy Photo Paper (
Ultra Premium Glossy Photo Paper (EAI)
Bright White Paper (EAI)
(Euro/Asia)
(EAI)
Euro/Asia
)
Paper size
A4, Letter*
4” x 6”
(10 x 15 cm)
COPY MODE
Table 1-12. Print Mode for Copying
Copy Mode Print Mode
Mode Name Paper Type Mode Name Resolution Microweave Dot Size
Color copy* Plain Paper
B&W copy* Plain Paper
Photo copy Photo Paper Best Photo 1440 x 720 dpi ON VSD3
Note* : Print mode for the Color copy and B&W copy is selectable as described below:
Fast Economy: Press Color Text (or B&W Text for B&W copy) button and Stop button
simultaneously.
Normal: Press Color Text (or B&W Text for B&W copy) button.
Table 1-13. Copy Mode (Enlarging/Reducing)
Copy
Button
B&W Text
Color Text
Color Photo Borderless Fit to page 0 mm Enlarges or reduces to 4" x 6"/L size
Note* : “Fit to page” automatically sets the enlarge/reduce scale. When an original is smaller
than general card size (approx. 54mm x 86mm), the margins will be different from those
shown in the table.
Copy
Mode
Standard 100% 3 mm Copies A4/Letter original to the same size
Standard Fit to page 3 mm Enlarges or reduces to A4/Letter
Fast Economy 360 x 120 dpi OFF Eco
Normal 360 x 360 dpi ON VSD1
Fast Economy 360 x 120 dpi OFF Eco
Normal 360 x 360 dpi ON VSD1
Enlarge/
Reduce
Margins Description
COPY SPEED
Table 1-14. Copy Speed
UI Paper Type Print Mode Black Color
Plain Paper (A4/Letter)
Photo Paper (
Note *1: When printing “e-memo Pattern” on Plain Paper.
4” x 6”
)
*2: Borderless printing
Fast Economy 5 sec.*
Normal 20 sec.*
Best Photo - 380 sec.*
1
1
14 sec.*
72 sec.*
1
1
2
PRODUCT DESCRIPTION Specifications 16
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
COPY AREA
The following table shows the relative positioning of the original and copy.
Table 1-15. Original (scanner)
RW
(readable width)
216 mm (8.5”) 3 mm 297 mm (11.7”) 3 mm
RM LM TM BM
3 mm (0.12”) 3 mm (0.12”) 3 mm (0.12”) 3 mm (0.12”)
Scan bed
Scan area
Original
(face down)
Copy paper
Print area
(out-of-range left margin)
OLM
Table 1-16. Copy (printer)
RL
Right side of original
RL
(readable length)
a
Print direction
Scan direction
Start point
a
(out-of-range top margin)
OTM
RW
OLM
LM
Top left corner
of the original
PW
OTM
BORDERLESS COPY
The following table shows the relative positioning of the original and copy.
Table 1-17. Original (scanner)
RW
(readable width)
216 mm (8.5”) 1.5 mm ± 1 mm 297 mm (11.7”) 1.5 mm ± 1 mm
RO LO TO BO
2.5 mm 2.5 mm 2.8 mm 3.6 mm
(out-of-range left margin)
RW
OLM
PW
OLM
Table 1-18. Copy (printer)
Right side of original
a
Print direction
Scan direction
LO
a
RL
(readable length)
RL
OTM
(out-of-range top margin)
OTM
Scan bed
Scan area
Original
(face down)
Start point
Top left corner
of the original
Print area
Copy paper
Copy
Right side of copy
RM
BM
PL
Figure 1-5. Standard Copy
PRODUCT DESCRIPTION Specifications 17
TM
RO
Figure 1-6. Borderless Copy
Right side of copy
BO
TO
PL
Copy
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
1.2.4 Electrical Specifications
Primary power input
Table 1-19. Primary Power Input
Item 100-120 V model 220-240 V model
Rated power supply voltage 100 to 120 VAC 220 to 240 VAC
Input voltage range 90 to 132 VAC 198 to 264 VAC
Rated current 0.6A (max. 0.7) 0.3A (max. 0.4)
Rated frequency 50 to 60 Hz
Input frequency range 49.5 to 60.5 Hz
Dielectric strength 1500 ACVrms for one minute
Energy conservation International Energy Star Program compliant
Printing
(black text on plain paper)
Printing
(color draft on plain paper)
Power
consumption
Copying (normal BK mode) 15.3 W 15.6 W
Copying (draft BK mode) 21.6 W 22.0 W
Scanning 10.5 - 13.6 W 10.5 - 14.1 W
Sleep mode 3.8 W 3.8 W
Standby mode (power-off) 1 W 1 W
Note 1: If the printer is not operated for more than five minutes (T.B.D.), the standby function
reduces the current to the motor to conserve power.
2: If the scanner is not operated for more than five minutes (T.B.D.), the standby function
reduces the current to the motor to conserve power.
3: If the control panel is not operated for more than thirteen minutes (T.B.D.), the control
panel turns to the power save mode within fifteen minutes (T.B.D.).
13.3 W 13.8 W
17.9 W 17.7 W
1.2.5 Environmental Conditions
Table 1-20. Environmental Performance
Condition Temperature Humidity
Operating
Transporting*
10 to 35°C
(50 to 95°F)
-20 to 60°C*
1
(-4°F to 140°F)
20 to 80%*
3
5 to 85%
Note *1: Packed in the original package
*2: No condensation
*3: 120 hours at 60°C, One month at 40°C
Note : The combined Temperature and Humidity conditions must be within the blue-shaded
range shown below.
90
80
70
60
Humidity (%)
50
40
30
20
10/50
Figure 1-7. Temperature/Humidity Range
*2
3
Shock Vibration
1G
(1 msec or less)
2G
(2 msec or less)
27/80
30/86 35/95 40/10420/68
Temperature (°C/°F)
0.15G
(X,Y,Z directions)
1.5G
(X,Y,Z directions)
PRODUCT DESCRIPTION Specifications 18
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
1.2.6 Durability
Total print life: 10,000 pages (black only, A4), or three years
(whichever comes first)
Printhead life: Seven billion shots (per nozzle) or five years
(whichever comes first)
Scanner head: 36,000 cycles (MCBF)
1.2.7 Acoustic Noise
Maximum 47 dB
(printing ECMA pattern on Premium Glossy Photo Paper in Best Photo mode)
1.2.8 Safety approvals (Safety standards/EMI)
USA UL60950-1
FCC Part15 Subpart B Class B
Canada CAN/CSA-C22.2 No.60950-1
CAN/CSA-CEI/IEC CISPR 22 Class B
Mexico NOM-019-SCFI-1998
Taiwan CNS13438 Class B
CNS14336
EU EN60950-1
EN55022 Class B
EN61000-3-2, EN61000-3-3
EN55024
Germany EN60950-1
Russia GOST-R (IEC60950-1, CISPR 22)
Singapore IEC60950-1
Korea K60950-1
KN22 Class B
KN61000-4-2/-3/-4/-5/-6/-11
Hong Kong IEC60950-1
Argentina IEC60950-1
Australia AS/NZS CISPR22 Class B
1.2.9 Interface
The printer has a USB interface of the following specification.
Standards
“Universal Serial Bus Specifications Revision 2.0”
“Universal Serial Bus Device Class Definition for Printing Devices Version
1.1” (printer unit)
Transfer rate: 12 Mbps (Full Speed Device)
Data format: NRZI
Compatible connector: USB Series B
Recommended cable length: 2 [m] or less
Device ID
Table 1-21. Device ID (T.B.D)
Product
Name
CX4300
CX4400
CX5500
Device ID
[00H][60H]
MFG:EPSON;
CMD:ESCPL2,BDC,D4,ESCPR1;
MDL:Stylus[SP]CX4300;
CLS:PRINTER;
DES:EPSON[SP]Stylus[SP]CX4300;
[00H][60H]
MFG:EPSON;
CMD:ESCPL2,BDC,D4,ESCPR1;
MDL:Stylus[SP]CX4400;
CLS:PRINTER;
DES:EPSON[SP]Stylus[SP]CX4400;
[00H][60H]
MFG:EPSON;
CMD:ESCPL2,BDC,D4,ESCPR1;
MDL:Stylus[SP]CX5500;
CLS:PRINTER;
DES:EPSON[SP]Stylus[SP]CX5500;
Product
Name
CX5600
DX4400
DX4450
Device ID
[00H][60H]
MFG:EPSON;
CMD:ESCPL2,BDC,D4,ESCPR1;
MDL:Stylus[SP]CX5600;
CLS:PRINTER;
DES:EPSON[SP]Stylus[SP]CX5600;
[00H][60H]
MFG:EPSON;
CMD:ESCPL2,BDC,D4,ESCPR1;
MDL:Stylus[SP]DX4400;
CLS:PRINTER;
DES:EPSON[SP]Stylus[SP]DX4400;
PRODUCT DESCRIPTION Specifications 19
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
1.2.10 Control Panel
BUTTONS
The five buttons on the control panel functions as shown below.
Table 1-22. Buttons
Button Function
Power Turns the power on or off.
• Job cancel
Stop
Color Photo
B&W Text
Color Text
Note * : See “1.2.11 Button Functions in Stand-alone Copy ” (p.21) for more details.
• Head cleaning
• Ink Cartridge replacement
• Photo copy
• Recovery from an error state
• B&W copy (100% scale with 3 mm margins, or Fit to page)
• Recovery from an error state
• Color copy (100% scale with 3 mm margins, or Fit to page)
• Recovery from an error state
Power LED
Power Button
Ink LED
Paper LED
Stop Button
INDICATORS (LED)
Color Photo Button
The three LEDs on the control panel indicates printer status as shown below.
Table 1-23. Indicators (LEDs)
LED Function
Power LED
[Green] *
Ink LED
[Orange]
Paper LED
[Orange]
Note *1: All LEDs except for Power LED will be turned off while printing or scanning by a
1
computer.
*2: See “1.2.12 Errors and Panel Status” (p.21) for more details.
Flashes during power-on and power-off sequence.
Flashes during some operation (printing, scanning, copying or cleaning)
is in process. Lights at stand-by.
Flashes or lights to indicate an ink-related status or error.*
Flashes or lights to indicate a paper-related status or error.*
2
2
B&W Text Button
Color Text Button
Figure 1-8. Control Panel
Note : Figure 1-8 is the control panel of the model for US/ESP/EAL. The button names or other
indications printed on the panel differ depending on the destination.
PRODUCT DESCRIPTION Specifications 20
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
1.2.11 Button Functions in Stand-alone Copy
The functions of the buttons in stand-alone copy mode are described in the table below.
Table 1-24. Buttons
Button Function
Power Turns the power on or off.
• Job cancel
Cancels a print or copy job, and ejects paper if paper has been fed inside.
• Head cleaning
Runs a head cleaning cycle when pressed for three seconds or longer. If
Stop
Color Photo
B&W Text
Color Text
B&W Text +
Stop
there is not enough ink for the cleaning, the cleaning is automatically
cancelled and the printer indicates Ink out error.
• Ink Cartridge replacement
Moves the carriage to the position for replacing an ink cartridge(s) when
pressed during Ink out error or No ink cartridge error.
Starts ink charging when pressed after replacing the ink cartridge(s).
• Photo copy
Makes a color copy on 4x6 or L-sized Photo Paper.
• Recovery from an error state
Executes the remaining job when pressed after the error cause is removed.
• B&W copy (100% scale with 3 mm margins)
Makes a B&W copy on A4 or Letter-sized Plain Paper.
• B&W copy (Fit to page)
When pressed for three seconds or longer, makes a B&W copy on A4 or
Letter-sized Plain Paper enlarging or reducing the original image to fit it to
the paper size.
• Recovery from an error state
Executes the remaining job when pressed after the error cause is removed.
• Color copy (100% scale with 3 mm margins)
Makes a color copy on A4 or Letter-sized Plain Paper.
• Color copy (Fit to page)
When pressed for three seconds or longer, makes a color copy on A4 or
Letter-sized Plain Paper enlarging or reducing the original image to fit it to
the paper size.
• Recovery from an error state
Executes the remaining job when pressed after the error cause is removed.
Makes a B&W copy on A4 or Letter-sized Plain Paper in Fast Economy print
mode. (100% scale with 3 mm margins)
Table 1-24. Buttons
Button Function
Color Text +
Stop
B&W Text +
Power
Color Text +
Power
Makes a color copy on A4 or Letter-sized Plain Paper in Fast Economy print
mode. (100% scale with 3 mm margins)
(Only for Latin models)
Selects Letter size for B&W and Color copy.
(Only for Latin models)
Selects A4 size for B&W and Color copy.
1.2.12 Errors and Panel Status
Table 1-25. Errors and Panel Status
Error LED status Cause Recovery
Turn the power Off. Remove
Fatal error
Maintenance
request
Paper jam
Paper out
Ink out
No Ink
Cartridge
Incorrect Ink
Cartridge
Note * : When two or more errors occur at the same time, the one with higher priority will be
All LEDs
flash
All LEDs
lights
Paper LED
flashes
Paper LED
lights
Ink LED
lights
Ink LED
lights
Ink LED
lights
indicated.
Mechanical trouble
Some internal part
needs to be replaced
A paper jam has
occurred
Failed to load the paper.
Some cartridge has run
out of ink.
Some cartridge was not
detected.
An incorrect cartridge
was detected.
the cause and turn the power
back on. If the error still
occurs, call service.
Call service.
Remove the paper and press
B&W or Color Text button to
continue, or press Stop button
to cancel the job.
Load paper on the ASF
correctly, and press B&W or
Color Text button to continue,
or press Stop button to cancel
the job.
Replace the cartridge with
EPSON genuine one.
Replace the cartridge with
EPSON genuine one.
Replace the cartridge with
EPSON genuine one.
Priority
1
2
3
3
4
4
4
PRODUCT DESCRIPTION Specifications 21
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
1.2.13 Power Save Mode
Without any panel operation for 15 minutes (T.B.D.) while the printer and scanner unit
are in standby status, this unit moves into the low power panel mode in which power
consumption for the panel decreases.
This unit recovers from that mode by pushing any button but Power Button or printing/
scanning by the computer.
This unit is turned off by pushing Power Button in that mode.
Table 1-26. Power Save Mode
Action Function
Transition to
power save mode
Recovery from
power save mode
Turn off all the LEDs except for Power LED.
Recall the panel status as that before moving to low power panel mode.
1.2.14 Nozzle Check Pattern Print
Nozzle check pattern can be printed only with this unit. Left ink quantity of each color
is also printed in 10% increments.
To activate this function, turn on this unit while depressing Ink Button. After printing
the pattern, this unit moves to ordinary standby status.
The example of nozzle check pattern is explained below.
1
31
61
30
60
90
360dpi
VSD1
1
1
1
(1/120inch)
0.212mm
<Yellow><Black>
<Magenta>
<Cyan>
29
29
29
1.2.15 Printer Initialization (T.B.D)
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 printer head
(b) Eject a paper
(c) Clears input data buffer
(d) Clears print buffer
(e) Sets default values
3. Software initialization
The ESC@ command also initialize the printer.
When printer is initialized, the following actions are performed.
(a) Clears print buffer
(b) Sets default values
4. Power-on initialization except I/F
The printer recognized the IEEE 1284.4 “rs” command.
When printer is initialized, the following action is performed.
(a) Initializes printer mechanism
(b) Clears input data buffer
(c) Clears print buffer
(d) Sets default values except I/F
8 dots
Figure 1-9. Nozzle check pattern
PRODUCT DESCRIPTION Specifications 22
OPERATING PRINCIPLES
CHAPTER
2
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
2.1 Overview
This section describes the operating principles of the Printer Mechanism, Scanner
Mechanism and Electrical Circuit Boards.
PF motor
PF roller
2.2 Printer Mechanism
Printer mechanism of Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450
consists of printhead, carriage mechanism, paper loading/feeding mechanism, and ink
system.
As in the case of conventional models, Stylus CX4300/CX4400/CX5500/CX5600/
DX4400/DX4450 has two motors; one is a stepping motor for paper loading/feeding
mechanism, and the other is a DC motor for carriage mechanism.
Papers are fed from the backside and ejected from the front side of the printer.
Paper feeding mechanism feeds papers using the LD roller and the retard roller.
Star wheel
rollers
Carriage unit
Paper eject
roller
CR lock lever
Cap unit
CR timing belt
CR encoder
sensor
Retard roller
Compression
spring
LD roller
PE sensor
Cam, large
Cam, small
Clutch
Pump unit
CR motor
Figure 2-1. Printer Mechanism Outline
OPERATING PRINCIPLES Overview 24
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
2.2.1 Printhead Specifications
The Printhead of this product is a D2-CHIPS type.
Nozzle configuration
Monochrome 90 nozzles
Color 29 nozzles x 3 (Cyan, Magenta, Yellow)
The following shows the arrangement of the nozzles and the color arrangement of each
nozzle line when viewed the printhead from behind.
2.822mm
(40/360 inch)
C#29
Cyan: 29nozzles
C#1
M#29
Magenta: 29nozzles
K#90
K#89
Paper Loading
Black
Color
Direction
2.2.2 Carriage Mechanism
Main components of the carriage mechanism are carriage unit (including printhead,
CR encoder sensor), CR motor, timing belt, and CR scale.
2.2.2.1 CR Motor Specifications
Table 2-1. CR Motor Specifications
Item Specification
Type Motor with DC brush
Drive voltage +42 V ± 5% (applied voltage to the driver)
Electric resistance 28.8 Ω ± 10%
Inductance 20.1 mH ± 25%
Drive method PWM, constant-current chopping
Drive IC A6628
M#1
Y#29
Yellow: 29nozzles
Y#3
Y#2
Y#1
Carriage Moving Direction
K#3
K#2
K#1
0.2117mm
(1/120 inch)
Figure 2-2. Nozzle Rear View
OPERATING PRINCIPLES Printer Mechanism 25
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
2.2.3 Paper Feeding Mechanism
Paper loading/feeding mechanism consist of CR lock lever inside the ink system, LD
roller shaft (including clutch mechanism), and ASF unit.
CR lock lever and clutch mechanism play an important role in paper loading
mechanism. Refer to 2.2.3.2 Drive Process (p26) for details.
2.2.3.1 PF Motor Specifications (For both ASF and Pump motor)
Table 2-2. PF Motor Specification
Item Specification
Type 4-phase, 48-pole PM stepping motor
Drive voltage +42 V ± 5% (applied voltage to the driver)
Wire wound
resistance
Inductance 5.5 mH ± 20% (1KH, 1Vrms)
Drive method
Drive IC A6628
2-2 phase, 1-2 phase, W1-2phase, 2W1-2phase, 4W1-2 phase
4.3 Ω +8 / -12% (per one phase at 20 °C)
Bipolar drive
constant-current drive
2.2.3.2 Drive Process
1. Drive of the PF motor is always transmitted to the paper eject roller and the PF
roller, however, it is not transmitted to the LD roller and the retard roller owing to
the clutch of the LD roller shaft.
2. The carriage unit moves to the ASF trigger position once the paper loading
command is received.
3. PF motor is rotated counter clockwise, and the clutch is released by the CR lock
lever.
4. After the clutch is released, the PF motor rotates clockwise. Drive is transmitted to
the LD roller and the paper loading operation begins.
5. During paper loading operation, papers are fed from the ASF unit to inside the
printer by the rotating movement of the two cams of the LD roller.
Cam, large:releases hopper
Cam, small:releases paper back lever
6. Once a sheet of paper is fed, the hopper and the paper back lever bring back rest of
the papers to the position in readiness by the rotating movement of the two cams
mentioned above.
7. When the LD roller is turned a full circle, the CR lock lever release the clutch and
the drive to the LD roller is interfered.
OPERATING PRINCIPLES Printer Mechanism 26
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
2.2.4 Ink System Mechanism
The Ink system mechanism consists of pump mechanism and capping mechanism that
includes wiper mechanism.
2.2.4.1 Pump Unit Mechanism
When the PF motor turns, power is always transmitted to the ink system.
Table 2-3. PF Motor Rotational Direction & Ink System Mechanism
Direction* Function
Counterclockwise Absorbs the ink by the Pump Unit
Clockwise Release pump.
Note * : The PF Motor rotational direction = seen from the left side of the printer.
2.2.4.2 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.
OPERATING PRINCIPLES Printer Mechanism 27
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
2.3 Scanner Mechanism
The Scanner Mechanism of Stylus CX4300/CX4400/CX5500/CX5600/DX4400/
DX4450 are constructed of a Scanner Carriage Unit, Scanner Motor, etc., in the same
way as previous A4 size scanners.
2.3.1 Scanner Carriage Mechanism
2.3.1.1 Scanner Carriage Unit Overview
The Scanner Carriage Unit consists of a CIS Board, Rod Lens Array, LEDs, etc.
CIS Board
CIS Board contains the sensing elements that are placed across the entire width of
an original. The sensing elements, which does not install a color filter, read an
original through the Rod Lens Array by turning on red, green, and blue lightemitting diodes (LEDs) alternately. It is not the CIS Board but the Main Board that
converts the analog light signal read by the Rod Lens Array into digital signal.
Rod Lens Array
A number of rod-shaped lenses, which are arranged on the sensing elements, are
also placed across the entire width of an original. These lenses read the light
reflected from the original that is produced by the light source (LEDs) and pass the
information to the sensing elements. Compared to conventional CCD method, this
optical system allows the focal length (distance between sensor and image
scanned) to be shallow. Therefore, an original to be scanned should be brought
close to the document glass. The optical system, in addition, is 1:1, (there is no
optical reduction or enlargement) and this results in a scanner offering the solid
performance in terms of accuracy.
Scanner Carriage UnitScanner Carriage Shaft
Scanner Motor Timing Belt
Figure 2-3. Scanner Mechanism
LEDRod Lens Array
CIS
LED
Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 use three color
LEDs (the three colors being red, green, and blue) to illuminate the line to be
scanned in the document. Unlike cold cathode fluorescent lamp used in CCD
method, usage of LEDs requires no warm-up time and allows the CIS to be highly
power efficient.
Scanner Carriage Unit
Figure 2-4. Scanning image
CIS Board
OPERATING PRINCIPLES Scanner Mechanism 28
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
2.3.1.2 Scanner Carriage Unit Movement Overview
Image is scanned in the main scanning direction (=1 line) by the CIS board and in the
sub-scanning direction (=several lines) combined with Scanner Carriage Unit
movement. (See the figure below.)
The CIS board can scan 1 line in main scanning direction (parallel to the Scanner
Carriage Unit) at one time. When scanning next lines after the second line in subscanning direction, CR driving moves the Scanner Carriage Unit, and scan the lines.
The scanned data is sent to the control board. The scanned data for “n” lines and “n-1”
line are processed consecutively.
1st line 2nd line 1 pixel
Scanner Carriage
Unit
Sub-scanning direction by Scanner Carriage Unit movement
Figure 2-5. Scanner Carriage Unit movement
Document
Mainscanning
direction
Drive of the Scanner Motor is transferred to the Scanner Carriage Unit by the Scanner
Timing Belt. The Scanner Carriage Unit slides in the secondary scanning direction.
The Scanner Motor uses a stepping motor and drives using open loop control.
Left side
Scanner Motor
Right side
Scanner Carriage Unit
Figure 2-6. Scanner Carriage Unit Mechanism
The table below shows the specifications for the stepping motor that controls the
Scanner Carriage Mechanism.
Table 2-4. Scanner Motor specifications
Item Description
Motor type PM type stepping motor
Drive voltage 42V (DC)
Coil resistance 37Ω ±10% (per phase at 25 degrees)
Inductance TBDmH ± TBD%
Driving method PWM
Driver IC L6219
OPERATING PRINCIPLES Scanner Mechanism 29
EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
2.4 Electrical Circuit Operating Principles
The electric circuit of Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450
consists of the following boards:
Main board: PCBA MB
Power supply board: ASSY POWER 110V/220V
Panel board: PCBA PB
The figure below shows the block diagram of this printer.
Panel Board
CR Motor
PF Motor
Head Driver Board
Main Board
+42VDCPower Off
Power Supply Board
Sensors
Scanner Motor
CIS Assy.
Figure 2-7. Electrical Circuit Block Diagram
Printer
Mechanism
Scanner
Mechanism
2.4.1 Power Supply Board
In the Power Supply Board of Stylus CX4300/CX4400/CX5500/CX5600/DX4400/
DX4450, the simulated oscillating stimulation flyback converter circuit method is
used, and it supplies +42 VDC to the drive line. The application of the output voltage is
described below.
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 led to the switching circuit and FET QF1
preforms the switching operation. By the switching operation of the primary circuit,
+42VDC is generated and stabilized at the secondary circuit.
2.4.2 Main Board
The logic circuit of the Main Board is composed of the following:
Logic line (CPU-ASIC 4 in 1, Flash-ROM and so on)
Motor control/drive circuit (CR Motor, PF Motor, Scanner Motor)
Head control/drive circuit
USB I/F circuit
Sensor circuit
Reset circuit, EEPROM circuit
Table 2-5. Main Board Major Components and Primary Functions
IC Location Function
CPU-ASIC U3
SDRAM U4 3.3 V drive 4M x 16 bit DRAM
Serial Flash U5 3.3 V drive 4 M bit Serial Flash that stores the program
Motor Driver
RTC U9
DAC U10 Generates trapezoidal waveform, drives 3.3 V
U6 Scanner motor drive; adjusts 5 V, drives 42 V
U7 CR/PF motor drive; adjusts 5 V, drives 42 V
Drives CPU (H8S/2674 base), internal 8 K byte x 4 RAM,
24 Mhz, 3.3 V/1.8V
•EEPROM
Default settings, backup for all parameters
• Reset function
• Timer function
OPERATING PRINCIPLES Electrical Circuit Operating Principles 30
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