Epson rx690 сервис мануал - RukovodstvoRus.ru - инструкции пользования и руководства

This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the Epson Stylus Photo RX680 / RX685 / RX690. The instructions and procedures included herein are intended for the experienced repair technicians.

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Free Download Epson Stylus Photo RX680 / RX685 / RX690. Service Manual

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Service manual для принтера Epson RX680-685-690

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Epson Stylus Photo RX690 (Принтеры) сервис мануалы в PDF-формате помогут найти неполадки и ошибки, а также осуществить ремонт Epson Stylus Photo RX690 и восстановить работу устройства.

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SERVICE MANUAL

Color Inkjet Printer

Stylus Photo RX680/RX685/RX690

SEMF07008

	PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1) Personal injury and 2) damage to equipment.
DANGER	Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by
	DANGER Headings.
WARNING	Signals a precaution which, if ignored, could result in damage to equipment.

The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.

DANGER

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

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

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

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

WARNING

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

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

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

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

5.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 the experienced repair technicians, and attention should be given to the precautions on the preceding page.

Manual Configuration

This manual consists of six chapters and Appendix.

CHAPTER 1.PRODUCT DESCRIPTIONS

Provides a general overview and specifications of the product.

CHAPTER 2.OPERATING PRINCIPLES

Describes the theory of electrical and mechanical operations of the product.

CHAPTER 3.TROUBLESHOOTING

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

CHAPTER 4.DISASSEMBLY / ASSEMBLY

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

CHAPTER 5.ADJUSTMENT

Provides Epson-approved methods for adjustment.

CHAPTER 6.MAINTENANCE

Provides preventive maintenance procedures and the lists of Epsonapproved lubricants and adhesives required for servicing the product.

APPENDIX Provides the following additional information for reference:

• Electrical circuit boards schematics

Symbols Used in this Manual

Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Be aware of all symbols when they are used, and always read NOTE, CAUTION, or WARNING messages.

	ADJUSTMENT	Indicates an operating or maintenance procedure, practice or condition
	REQUIRED	that is necessary to keep the product’s quality.
	CAUTION	Indicates an operating or maintenance procedure, practice, or condition
	that, if not strictly observed, could result in damage to, or destruction of,

		equipment.
	CHECK	May indicate an operating or maintenance procedure, practice or
	POINT	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.
	WARNING	Indicates an operating or maintenance procedure, practice or condition
	that, if not strictly observed, could result in injury or loss of life.

REASSEMBLY Indicates that a particular task must be carried out according to a certain standard after disassembly and before re-assembly, otherwise the qual-

ity of the components in question may be adversely affected.

		Revision Status

Revision	Date of Issue	Description
A	August 3, 2007	First Release

EPSON Stylus Photo RX680/RX685/RX690

Revision A

CONTENTS

Chapter 1 PRODUCT DESCRIPTION

1.1	Features…………………………………………………………………………………………………	10
1.2	Printing Specifications…………………………………………………………………………….	11
	1.2.1	Basic Specifications………………………………………………………………………	11
	1.2.2	Ink Cartridge………………………………………………………………………………..	11
	1.2.3	Print Mode …………………………………………………………………………………..	12
	1.2.4	Supported Paper……………………………………………………………………………	13
	1.2.5	Printing Area ……………………………………………………………………………….	16
1.3	Scanner Specifications…………………………………………………………………………….	16
1.4	General Specifications…………………………………………………………………………….	17
	1.4.1	Electrical Specifications ………………………………………………………………..	17
	1.4.2	Safety Approvals (Safety standards/EMI)………………………………………..	17
	1.4.3	Acoustic Noise……………………………………………………………………………..	17
	1.4.4	Durability…………………………………………………………………………………….	17
	1.4.5	Environmental Conditions……………………………………………………………..	18
1.5	Interface………………………………………………………………………………………………..	18
	1.5.1	USB Interfaces……………………………………………………………………………..	18
	1.5.2 Memory Card Slots……………………………………………………………………….	19
1.6	Control Panel …………………………………………………………………………………………	20
	1.6.1 Operation Buttons & LED……………………………………………………………..	20
1.7	Specifications of Each Function……………………………………………………………….	21
	1.7.1	Stand-alone Copy Function ……………………………………………………………	21
	1.7.2	Memory Card Direct Print Function………………………………………………..	21
	1.7.3	Backup Function…………………………………………………………………………..	22
	1.7.4	Camera Direct Print Function (USB Direct Print/PictBridge) …………….	23
	1.7.5	Speciality Print Functions………………………………………………………………	23
	1.7.6 Setup Mode………………………………………………………………………………….	23

Chapter 2 OPERATING PRINCIPLES

2.1	Overview ………………………………………………………………………………………………	26
	2.1.1 Printer Mechanism ……………………………………………………………………….	26
	2.1.2 Motors and Sensors ………………………………………………………………………	26
2.2	Printer Mechanism Operating Principles …………………………………………………..	28
	2.2.1 Printhead……………………………………………………………………………………..	28
	2.2.2 Carriage Mechanism……………………………………………………………………..	28
	2.2.3 APG Mechanism ………………………………………………………………………….	30
	2.2.4 Paper Loading/Feeding Mechanism………………………………………………..	33
	2.2.5 CD-R Mechanism…………………………………………………………………………	45
	2.2.6 Ink System…………………………………………………………………………………..	49
	2.2.7 Scanner Unit ………………………………………………………………………………..	50
2.3	Electrical Circuits Operating Principles …………………………………………………….	51
	2.3.1 Features ………………………………………………………………………………………	51
	2.3.2 Circuit Board Components…………………………………………………………….	52
	2.3.3 Main Board Circuit Block Diagram ………………………………………………..	53
2.4	Banding Reduction System (BRS) / Paper Feed Amount Profile Correction (PFP) . 54

Chapter 3 TROUBLESHOOTING

3.1	Overview ………………………………………………………………………………………………	56
	3.1.1	Troubleshooting on Motors and Sensors………………………………………….	56
3.2	Error/Warning Indications……………………………………………………………………….	57
	3.2.1	List of Error Indications ………………………………………………………………..	57
3.3	Troubleshooting……………………………………………………………………………………..	59
	3.3.1	Troubleshooting with Error Indications …………………………………………..	59
3.4	Troubleshooting by Symptom (no error indications) …………………………………..	78
	3.4.1	Troubleshooting Printer Mechanism Problems…………………………………	78
	3.4.2	Troubleshooting Electrical Problems ………………………………………………	81
	3.4.3	Troubleshooting Ink Supply Problems…………………………………………….	81
	3.4.4	Troubleshooting I/F-related Problems……………………………………………..	83
3.5	Troubleshooting for Scanner ……………………………………………………………………	84
3.6	Troubleshooting Duplex Unit Problems…………………………………………………….	86

EPSON Stylus Photo RX680/RX685/RX690

Revision A

Chapter 4 DISASSEMBLY AND ASSEMBLY
4.1 Overview ………………………………………………………………………………………………	88
4.1.1	Precautions ………………………………………………………………………………….	88
4.1.2	Tools …………………………………………………………………………………………..	89
4.1.3	Screws…………………………………………………………………………………………	89
4.1.4 Work Completion Checklist …………………………………………………………..	90
4.1.5	Required Preparation before Disassembly ……………………………………….	91
4.1.6	Orientation Definition …………………………………………………………………..	91
4.1.7 How to Unlock the Carriage…………………………………………………………..	91
4.1.8	Disassembly Flowchart …………………………………………………………………	92
4.2 Removing Exterior Parts/Components ………………………………………………………	94
4.2.1	Paper Support Assy ………………………………………………………………………	94
4.2.2 Rear Cover/Automatic Duplex Unit………………………………………………..	94
4.2.3	Cassette Assy……………………………………………………………………………….	95
4.2.4 Front ASF Cover Assy ………………………………………………………………….	96
4.2.5	Panel Unit/Upper Housing …………………………………………………………….	96
4.2.6	Scanner Unit ………………………………………………………………………………	100
4.2.7 Hinge Assy ………………………………………………………………………………..	102
4.3 Disassembling the Scanner Unit……………………………………………………………..	103
4.3.1 Document Cover/ASF Cover ……………………………………………………….	103
4.3.2 Scanner Housing…………………………………………………………………………	103
4.3.3	CIS Unit…………………………………………………………………………………….	104
4.3.4 CR Motor Unit……………………………………………………………………………	105
4.4 Removing Control Boards……………………………………………………………………..	106
4.4.1 Main Board Assy………………………………………………………………………..	106
4.4.2 Disassembling the Main Board Assy …………………………………………….	107
4.4.3	Disassembling the Panel Unit……………………………………………………….	108
4.5 Disassembling the Major Parts/Components…………………………………………….	110
4.5.1 Middle Housing ………………………………………………………………………….	110
4.5.2 Power Supply Unit ……………………………………………………………………..	113
4.5.3	Stacker Assy ………………………………………………………………………………	114
4.5.4	Printer Mechanism………………………………………………………………………	114
4.5.5 CR Scale ……………………………………………………………………………………	117
4.5.6	Printhead……………………………………………………………………………………	118
4.5.7 APG Assy/Sub Board/ASF Encoder/Retard ASF Assy ……………………	120
4.5.8	Waste Ink Pads/Foot……………………………………………………………………	123
4.5.9 EJ Frame Assy/CDR Guide Assy………………………………………………….	124
4.5.10 PF Encoder ………………………………………………………………………………	127
4.5.11 PF Motor………………………………………………………………………………….	128

4.5.12 CR Motor…………………………………………………………………………………	129
4.5.13	Carriage Assy …………………………………………………………………………..	130
4.5.14 Paper Guide Upper L/R ……………………………………………………………..	133
4.5.15 Paper Guide Rear/PE Sensor………………………………………………………	134
4.5.16 Rear ASF Assy/Change Lever ……………………………………………………	135
4.5.17 ASF Sub Motor/RH Sensor/RP Sensor ………………………………………..	137
4.5.18	LD roller/Retard Roller ……………………………………………………………..	139
4.5.19 Ink System……………………………………………………………………………….	142
4.5.20 ASF Motor Assy……………………………………………………………………….	143
4.5.21 Rear Frame Assy ………………………………………………………………………	144
4.5.22 Paper Guide Front & EJ Roller Assy/PF Roller Assy…………………….	145
4.5.23 Paper Guide Bank Assy……………………………………………………………..	149
4.5.24 Paper Guide Lower Assy……………………………………………………………	150
Chapter 5	ADJUSTMENT
5.1 Adjustment Items and Overview…………………………………………………………….	152
5.1.1 Servicing Adjustment Item List ……………………………………………………	152
5.1.2 Required Adjustments …………………………………………………………………	155
5.2 Adjustment by Using Adjustment Program ……………………………………………..	157
5.2.1 Top Margin Adjustment (Rear/Front) ……………………………………………	157
5.2.2 Head Angular Adjustment……………………………………………………………	157
5.2.3 Bi-D Adjustment ………………………………………………………………………..	158
5.2.4 First Dot Position Adjustment (Front/Rear)……………………………………	159
5.2.5 PW Adjustment ………………………………………………………………………….	159
5.2.6 PF Adjustment (Rear/Front)…………………………………………………………	160
5.3 Adjustment without Using Adjustment Program ………………………………………	161
5.3.1 PG Adjustment …………………………………………………………………………..	161
5.3.2 PF Belt Tension Adjustment ………………………………………………………..	163
5.3.3 FD Belt Tension Adjustment………………………………………………………..	164
5.4 Scanner Original Adjustment …………………………………………………………………	165
5.5 Banding Reduction System (BRS) Adjustment / Paper Feed Amount Profile (PFP)
Correction ……………………………………………………………………………………………	168
5.5.1 Overview …………………………………………………………………………………..	168
5.5.2 Adjustment Procedure …………………………………………………………………	170

EPSON Stylus Photo RX680/RX685/RX690 Revision A

Chapter 6 MAINTENANCE

6.1 Overview …………………………………………………………………………………………….	174
6.1.1	Cleaning…………………………………………………………………………………….	174
6.1.2	Service Maintenance …………………………………………………………………..	174
6.1.3	Lubrication ………………………………………………………………………………..	175

Chapter 7 APPENDIX

7.1	Connectors…………………………………………………………………………………………..	184
7.2	Exploded Diagram / Parts List ……………………………………………………………….	188
7.3	Electrical Circuits …………………………………………………………………………………	188

C H A P T E R A

PRODUCT DESCRIPTION

EPSON Stylus Photo RX680/RX685/RX690

Revision A

1.1 Features

Stylus Photo RX680/RX685/RX690 are multi-featured color inkjet printers designed for semiprofessional and home use.

The main features are;

Printing

High speed and high quality on plain paper is achieved. Newly developed dye ink is employed, which offers excellent resistance to light, water, gas, and is less prone to smear.

•In addition to print from a PC, offers direct print from a memory card.

•Automatic duplex printing using the optional duplex unit (equipped as standard for EAI model)

•Direct print on a CD/DVD

•Equipped with two paper feeders; front cassette and rear ASF.

Scanning

Employing CIS sensor offers faster scanning with no warm-up time and achieved compact body.

•Scanning from a PC

•Offers a function that directly stores a scan data to a memory card.

Stand-alone copy

High quality copy using the printing and scanning functions. Offers eight or 11 (with the duplex unit) preset copy layouts.

Memory card slot

Accessible from a PC as a USB memory card slot.

Color LCD

2.5-inch TFT color LCD for excellent ease of operation

USB interfaces

•Enables to print images in an external storage device.

•Backup copy of a memory card can be made on an external media

•Offers camera direct print (PictBridge, USB Direct Print)

Wireless communication

Mounting the optional Bluetooth unit offers wireless communication with an external device.

Dimensions

Dimensions:446 mm (W) x 432 mm (D) x 237 mm (H)

(with the ASF and stacker closed. Excludes the duplex unit)

Weight: 12.0 kg

(Excludes ink cartridges, CDR tray, duplex unit and power cable)

Figure 1-1. External View

PRODUCT DESCRIPTION

Features

EPSON Stylus Photo RX680/RX685/RX690

Revision A

1.2	Printing Specifications
1.2.1	Basic Specifications
		Table 1-1. Printer Specifications

	Item		Specifications

Print method	On-demand ink jet

		Black:	90 nozzles x 1
Nozzle configuration	Color:	90 nozzles x 5
			(Cyan, Magenta, Yellow, Light Cyan, Light Magenta)

Print direction	Bi-directional minimum distance printing (logic seeking)

		Horizontal x Vertical (dpi)
Print resolution	• 360 x 180	• 720 x 540
• 360 x 360	• 720 x 720

		• 720 x 360	• SMGA 5760 x 1440 (1440 x 1440)

		• ESC/P Raster command
Control code	• ESC/P-R (RGB) command
		• EPSON Remote command

		Character code: Alphanumeric with expanded graphics (PC437)
Internal font		ASCII, 20H to 7FH only
Font:	EPSON original font

			Alphanumeric font: Courier

Input buffer size	64 Kbytes

Paper feed method	Friction feed

Paper path	• Top feed, front out (front paper cassette)
• Front feed, front out (rear ASF)


Paper feed rates	T.B.D. mm/sec (at 25.4 mm feed)

PF interval	Programmable in 0.01764 mm (1/1440 inch) steps

1.2.2 Ink Cartridge

The product numbers of the Epson ink cartridges for this printer are shown below.

Table 1-2. Product No. of Ink Cartridges

Color	EAI	Euro	Asia, CISMEA
Black	T0771 (S)	T0801	T0811 (S)
T0781 (SS)	T0821 (SS)


Cyan	T0772 (S)	T0802	T0812 (S)
T0782 (SS)	T0822 (SS)


Magenta	T0773 (S)	T0803	T0813 (S)
T0783 (SS)	T0823 (SS)


Yellow	T0774 (S)	T0804	T0814 (S)
T0784 (SS)	T0824 (SS)


Light Cyan	T0775 (S)	T0805	T0815 (S)
T0785 (SS)	T0825 (SS)


Light Magenta	T0776 (S)	T0806	T0816 (S)
T0786 (SS)	T0826 (SS)

Shelf life

Two years from production date (if unopened), six months after opening package.

Storage Temperature

Table 1-3. Storage Temperature

Situation	Storage Temperature	Limit
When stored in individual boxes	-20 oC to 40 oC
(-4oF to 104oF)	1 month max. at 40 oC

When installed in main unit	-20 oC to 40 oC	(104oF)
(-4oF to 104oF)

Dimension

12.7 mm (W) x 68 mm (D) x 47 mm (H)

CAUTION 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 (77oF) until the ink thaws and becomes usable.

PRODUCT DESCRIPTION

Printing Specifications

EPSON Stylus Photo RX680/RX685/RX690

Revision A

1.2.3 Print Mode

Table 1-4. Print Mode (Color/Monochrome)

Media	Print Mode	Resolution	Dot Size	Bi-d	Micro	Border
(H x V) dpi	(cps*1)	Weave	-less
• Plain paper	Draft 1	360×180	Eco	ON	OFF	NA
• Premium Bright	(Fast economy)	(450cps)

White Paper (EAI)	Draft 2	360×180	Eco	ON	OFF	NA
• Bright White Inkjet
(Economy)	(450cps)

Paper (others)
Normal	360×360	MC2-1	ON	OFF	NA

	(360cps)

	Photo Fine	720×720	MC1-1	ON	ON	NA
	(240cps)


• Ultra Premium	Photo*2	720×720	MC1-2	ON	ON	OK
Glossy Photo Paper	(1.0 pass)	(240cps)
(EAI)
Photo*2	720×720	MC2-2	ON	ON	OK
• Ultra Glossy Photo
(2.0 pass)	(280cps)
Paper (others)
Super Photo	1440×1440	MC1-5	ON	ON	OK

	(200cps)


• Photo Paper Glossy			MC1-1			OK
(EAI)	Fine	720×360	ON	ON
(240cps)
• Glossy Photo Paper

(others)	Photo*2	720×720	MC1-2	ON	ON	OK
• Premium Photo Paper
(1.0 pass)	(240cps)
Glossy (EAI)

• Premium Glossy	Photo*2	720×720	MC2-2			OK
Photo Paper (others)	ON	ON
(2.0 pass)	(280cps)
• Premium Photo Paper

Semi-Gloss (EAI)			MC1-5			OK
• Premium Semigloss	Super Photo	1440×1440	ON	ON
(200cps)
Photo Paper (other)


• Premium	Photo	720×720	MC2-2	ON	ON	OK
Presentation Paper	(2.0 pass)	(280cps)

Matte (EAI)
		MC1-5
• Matte Paper Heavy-	Super Photo	1440×1440	ON	ON	OK
(200cps)
weight (others)

Table 1-4. Print Mode (Color/Monochrome)

Media	Print Mode	Resolution	Dot Size	Bi-d	Micro	Border
(H x V) dpi	(cps*1)	Weave	-less
• Presentation Paper
Matte (EAI)	Photo	720×720	MC2-2	ON	ON	NA
• Photo Quality Inkjet	(2.0 pass)	(280cps)

Paper (others)

	Normal	360×360	MC2-1	OFF	OFF	NA
	(360cps)
Envelope
Photo Fine	720×720	MC1-1	OFF	ON	NA

	(240cps)


Photo stickers	Photo	720×720	MC2-2	ON	ON	NA
(2.0 pass)	(280cps)


• Iron-On Transfer
Paper (EAI)			MC1-1
• Iron-On Cool Peal	Photo Fine	720×720	OFF	ON	NA
(240cps)
Transfer Paper

(others)

CD/DVD label	Super Photo	1440×1440	MC1-5	ON	ON	NA
(200cps)


High-quality CD/DVD	Super Photo	1440×1440	MC1-5	ON	ON	NA
label	(200cps)

Note *1: cps = character per second

*2: Photo mode uses 1.0 pass or 2.0 pass depending on the paper size. 1.0 pass supported size: 4”x6”

2.0 pass supported size: 5”x7”, 8”x10”, Letter, A4

PRODUCT DESCRIPTION

Printing Specifications

EPSON Stylus Photo RX680/RX685/RX690

Revision A

1.2.4 Supported Paper

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 1-5. Supported Paper

			Thickne	Weight		EAI			EUR			Asia		Paper Path
Paper Name		Paper Size	ss


			mm	g/m2	lb.	P*1	B*2	D*3	P*1	B*2	D*3	P*1	B*2	D*3	F*4	R*5
	Legal	215.9 x 355.6 mm (8.5”x14”)				Y	—	—	Y	—	—	Y	—	—	—	Y

	Letter	215.9 x 279.4 mm (8.5”x11”)				Y	—	Y	Y	—	Y	Y	—	Y	Y	Y

	A4	210 x 297 mm (8.3”x11.7”)				Y	—	Y	Y	—	Y	Y	—	Y	Y	Y

	B5	182 x 257 mm (7.2”x10.1”)	0.08-			—	—	Y	Y	—	Y	Y	—	Y	Y	Y
Plain paper			64-90	17-24
A5	148 x 210 mm (5.8”x8.3”)	—	—	—	Y	—	—	Y	—	—	Y	Y
0.11

	Half Letter	139.7 x 215.9 mm (5.5″x8.5”)				Y	—	—	—	—	—	—	—	—	—	—

	A6	105 x 148 mm (4.1”x5.8”)				Y	—	—	Y	—	—	Y	—	—	Y	Y

	User	89 x 127216 x 297 mm*6				Y	—	—	Y	—	—	Y	—	—	Y*6	Y*7
	Defined	50.8×127 — 216×1117.9 mm*7

Premium Inkjet Plain Paper	A4	210 x 297 mm (8.3”x11.7”)	0.11	80	21	—	—	—	Y	—	Y	Y	—	Y	Y	Y

Premium Bright White Paper (EAI)	Letter	215.9 x 279.4 mm (8.5”x11”)	0.11	90	24	Y	—	Y	—	—	—	—	—	—	Y	Y

Bright White Inkjet Paper (others)	A4	210 x 297 mm (8.3”x11.7”)	0.13	92.5	25	—	—	—	Y	—	Y	Y	—	Y	Y	Y

	Letter	215.9 x 279.4 mm (8.5”x11”)				Y	Y	—	—	—	—	—	—	—	Y	Y

	A4	210 x 297 mm (8.3”x11.7”)				—	—	—	Y	Y	—	Y	Y	—	Y	Y
Ultra Premium Photo Paper Glossy (EAI)
8” x 10”	203.2 x 254 mm	0.30	290	77	Y	Y	—	—	—	—	—	—	—	Y	Y
Ultra Glossy Photo Paper (others)

	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	—	Y	Y

Note *:*1: indicates whether the paper type/size is supported or not. *2: indicates whether Borderless printing is available or not. *3: indicates whether duplex printing is available or not. *4: indicates whether the paper type/size is supported for front feeding (front cassette). *5: indicates whether the paper type/size is supported for rear feeding (rear ASF).

The underlined “Y” indicates the default feeder. *6,*7: the available user defined size differs between the front and the rear feeders. *6 indicates the value for the front feeder, and *7 indicates that for the rear.

PRODUCT DESCRIPTION

Printing Specifications

EPSON Stylus Photo RX680/RX685/RX690													Revision A
		Table 1-5. Supported Paper

			Thickne	Weight		EAI			EUR			Asia		Paper Path
Paper Name		Paper Size	ss



			mm	g/m2	lb.	P*1	B*2	D*3	P*1	B*2	D*3	P*1	B*2	D*3	F*4	R*5
	Letter	215.9 x 279.4 mm (8.5”x11”)				Y	Y	—	—	—	—	—	—	—	Y	Y

	A4	210 x 297 mm (8.3”x11.7”)				Y	Y	—	Y	Y	—	Y	Y	—	Y	Y

Premium Photo Paper Glossy (EAI)	8” x 10”	203.2 x 254 mm	0.27	255	68	Y	Y	—	—	—	—	—	—	—	Y	Y

Premium Glossy Photo Paper (others)	5” x 7”	127 x 178 mm	Y	Y	—	Y	Y	—	Y	Y	—	Y	Y



	4» x 6«	101.6 x 152.4 mm				Y	Y	—	Y	Y	—	Y	Y	—	Y	Y

	16:9 wide	102 x 181 mm (4”x7.11”)				—	—	—	Y	—	—	—	—	—	Y	Y

	Letter	215.9 x 279.4 mm (8.5”x11”)				Y	Y	—	—	—	—	—	—	—	Y	Y

Photo Paper Glossy (EAI)	A4	210 x 297 mm (8.3”x11.7”)	0.25	258	68	Y	Y	—	Y	Y	—	Y	Y	—	Y	Y

Glossy Photo Paper (others)	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	—	Y	Y

	Letter	215.9 x 279.4 mm (8.5”x11”)				Y	Y	—	—	—	—	—	—	—	—	—
Premium Photo Paper Semi-gloss (EAI)
A4	210 x 297 mm (8.3”x11.7”)	0.27	250	66	—	—	—	Y	Y	—	Y	Y	—	Y	Y
Premium Semigloss Photo Paper (others)

	4” x 6”	101.6 x 152.4 mm				Y	Y	—	Y	Y	—	Y	Y	—	Y	Y

Ultra Premium Photo Paper Luster	Letter	215.9 x 279.4 mm (8.5”x11”)	0.27	250	66	Y	Y	—	—	—	—	—	—	—	Y	Y

Premium Presentation Paper Matte (EAI)	Letter	215.9 x 279.4 mm (8.5”x11”)				Y	Y	—	—	—	—	—	—	—	Y	Y

A4	210 x 297 mm (8.3”x11.7”)	0.23	167	44	—	—	—	Y	Y	—	Y	Y	—	Y	Y
Matte Paper Heavy-weight (others)

	8” x 10”	203.2 x 254 mm				Y	Y	—	—	—	—	—	—	—	Y	Y

Double-sided Matte Paper	Letter	215.9 x 279.4 mm (8.5”x11”)	0.22	185	49	Y	—	—	—	—	—	—	—	—	Y	Y

A4	210 x 297 mm (8.3”x11.7”)	—	—	—	Y	—	—	Y	—	—	Y	Y


Presentation Paper Matte (EAI)	Letter	215.9 x 279.4 mm (8.5”x11”)	0.12	102	27	Y	—	—	—	—	—	—	—	—	Y	Y

Photo Quality Inkjet Paper (others)	A4	210 x 297 mm (8.3”x11.7”)	Y	—	—	Y	—	—	Y	—	—	Y	Y

The underlined “Y” indicates the default feeder.

PRODUCT DESCRIPTION

Printing Specifications

EPSON Stylus Photo RX680/RX685/RX690													Revision A
		Table 1-5. Supported Paper

			Thickne	Weight		EAI			EUR			Asia		Paper Path
Paper Name		Paper Size	ss



			mm	g/m2	lb.	P*1	B*2	D*3	P*1	B*2	D*3	P*1	B*2	D*3	F*4	R*5
	#10	104.8 x 241.3 mm				Y	—	—	Y	—	—	Y	—	—	—	—
	(4.125”x9.5”)

Envelopes			—	75-90	20-24
#DL	110 x 220 mm	—	—	—	Y	—	—	Y	—	—	—	—


	#C6	114 x 162 mm				—	—	—	Y	—	—	Y	—	—	—	—

Iron-On Transfer Paper (EAI)	Letter	215.9 x 279.4 mm (8.5”x11”)	0.14	130	35	Y	—	—	—	—	—	—	—	—	—	Y
Iron-On Cool Peal Transfer Paper (others)	A4	210 x 297 mm (8.3”x11.7”)	—	—	—	Y	—	—	Y	—	—	—	Y


Photo Stickers 16	A6	105 x 148 mm (4.1”x5.8”)	0.19		—	—	—	—	—	—	—	Y	—	—	—	Y

Photo Stickers 4	A6	105 x 148 mm (4.1”x5.8”)	0.19		—	—	—	—	—	—	—	Y	—	—	—	Y

CD/DVD	ø12cm	ø12cm	—		—	Y	—	—	Y	—	—	Y	—	—	Y*8	—

CD/DVD Premium Surface	ø8cm	ø8cm	—		—	Y	—	—	Y	—	—	Y	—	—	Y*8	—

The underlined “Y” indicates the default feeder. *8: using the CD/DVD tray.

CAUTION Make sure the paper is not wrinkled, fluffed, torn, or folded.

The curve of paper must be 5 mm or below.

When printing on an envelope, be sure the flap is folded neatly.

Do not use the adhesive envelopes.

Do not use double envelopes and cellophane window envelopes.

PRODUCT DESCRIPTION

Printing Specifications

EPSON Stylus Photo RX680/RX685/RX690

Revision A

1.2.5 Printing Area

The printing area for this printer is shown below.

Table 1-6. Printing Area (Margins)

Print Mode	Paper Size		Margin
Left	Right	Top	Bottom


Standard print	Any size	3 mm	3 mm	3 mm	3 mm

Envelope	5 mm	5 mm	3 mm	20 mm


Borderless	A4/Letter to 5” x 7”	2.54 mm*	2.54 mm*	2.96 mm*	4.02 mm*
print	4” x 6”	1.34 mm*	2.54 mm*

Note* : The margins for Borderless print are margins that bleed off the edges of paper.

Cut Sheet (Standard)	Cut Sheet (Borderless)		Envelope
LM	RM	LM	RM	LM	RM
	TM		TM		TM
					Print Area
	Print Area		Print Area
	BM				BM

Paper

SIze

Paper Size

Paper Feed Direction

Figure 1-2. Printing Area

1.3 Scanner Specifications

	Table 1-7. Scanner Specifications

Item		Specification

Scanner type		Flatbed, color

Scanning method		Moving carriage, stationary document

Home position		Far left corner

Photoelectric device		CIS

Light source		LED

Maximum document size		US letter, or A4 size

Scanning range		8.5 x 11.7 inches (216 x 297 mm)

Maximum resolution		Main scan: 1200 dpi / Sub scan: 2400 dpi

Maximum effective pixels		10,200 x 14,040 pixels (1200dpi)

Pixel depth		16 bit per pixel (input), 1 or 8 bit per pixel (output)

SCANNING RANGE

Table 1-8. Scanning Range

RW (read width)	OLM (left margin)	RL (read length)	OTM (top margin)


216 mm (8.5”)	1.5 mm +/- 1 mm	297 mm (11.7”)	1.5 mm +/- 1 mm

Home position

Scanning start position

Scanning direction

OLM
	a	Original
	(face down)
RW	Scan bed
	Scanning range

	OTM	RL

Figure 1-3. Scanning Range

PRODUCT DESCRIPTION

Scanner Specifications

EPSON Stylus Photo RX680/RX685/RX690

Revision A

1.4	General Specifications
1.4.1	Electrical Specifications
		Table 1-9. Primary Power Specifications

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	0.6 A (Max 1.2 A)		0.3 A (Max 0.6 A)

Rated frequency	50 to 60 Hz

Input frequency range	49.5 to 60.5 Hz

Insulation resistance	3000 V (for one minute)

		Standalone copying	20 W		20 W

Power		Low Power Mode	7.5 W		8 W
consumption	Sleep Mode	4 W		4.5 W

		Powered off Mode	0.3 W		0.6 W

Note : If the printer is not operated for more than three minutes, the printer shifts into the standby mode and reduces the current to the motor to conserve power.

1.4.2 Safety Approvals (Safety standards/EMI)

USA	UL60950-1
	FCC Part15 Subpart B Class B
Canada	CAN/CSA-CEI/IEC CISPR 22 Class B
	CAN/CSA-C22.2 No.60950-1
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/Hong Kong	IEC60950-1
Korea	K60950-1
	KN22 Class B
	K61000-4-2/-3/-4/-5/-6/-11
China	GB4943
	GB9254 Class B, GB17625.1
Australia	AS/NZS CISPR22 Class B

1.4.3 Acoustic Noise

36 dB (when printing from PC, on Premium Glossy Photo Paper, in the highest quality) 45 db (when copying on plain paper in the default mode)

1.4.4 Durability

Total print life

Black 16,000 pages (A4, 3.5% duty), Color 10,000 pages (A4, 5.0% duty), or five years which ever comes first

Printhead

Six billions shots (per nozzle) or five years which ever comes first

Scanner carriage

36,000 cycles of carriage movement

PRODUCT DESCRIPTION

General Specifications

EPSON Stylus Photo RX680/RX685/RX690

Revision A

1.4.5 Environmental Conditions

Table 1-10. Environmental Conditions

Condition	Temperature*1	Humidity*1,2	Shock	Vibration
Operating	10 to 35°C	20 to 80%	1G	0.15G,
(50 to 95°F)	(1 msec or less)	10 to 55Hz


Storage	-20 to 40°C*3	5 to 85%	2G	0.50G,
(unpacked)	(-4°F to 104°F)	(2 msec or less)	10 to 55Hz

Note *1: The combined Temperature and Humidity conditions must be within the blue-shaded range shown in Figure 1-4.

*2: No condensation

*3: Must be less than 1 month under 40°C.

	90
	80
	70
	60
Humidity (%)	50

	40
	30
	20
			27/80
	10/50	20/68	30/86	35/95	40/104

Temperature (°C/°F)

Figure 1-4. Temperature/Humidity Range

CAUTION	When returning the repaired printer to the customer, make sure
	the Printhead is covered with the cap and the ink cartridge is
	installed.

If the Printhead is not covered with the cap when the printer is off, turn on the printer with the ink cartridge installed, make sure the Printhead is covered with the cap, and then turn the printer off.

1.5 Interface

The printer has USB interfaces and memory card slots of the following specifications.

1.5.1 USB Interfaces

The printer has two USB ports; USB Device port for connecting with a host device such as a computer, and USB Host port for connecting with an external device such as DSC (Digital Still Camera).

Table 1-11. USB Interface Specification

Item	USB Device Port		USB Host Port*

	• Universal Serial Bus		• Universal Serial Bus
	Specifications Revision 2.0		Specifications Revision 2.0
	• Universal Serial Bus Device		• Universal Serial Bus Mass
Standards	Class Definition for Printing		Storage Class Bulk-Only
Devices Version 1.1		Transport Revision 1.0

	• Universal Serial Bus Mass
	Storage Class Bulk-Only
	Transport Revision 1.0
Transfer rate	480Mbps (High Speed Device)

Data format		NRZI

Compatible	USB Series B		USB Series A
connector


Maximum cable	Less than 2 m
length

Note* : The following devices can be connected to the USB Host port.

•DSC compliant with USB Direct Print Protocol Specification Rev1.0.

•DSC compliant with CIPA DC-001-2003 (PictBridge) Specification.

•Devices compliant with Universal Serial Bus Mass Storage Class Bulk-Only Transport Revision 1.0, and the Subclass code is one of the followings.

0x06 (SCSI transparent command set)

0x05 (SFF-8070i command set)

0x02 (SFF-8020i command set)

PRODUCT DESCRIPTION

Interface

EPSON Stylus Photo RX680/RX685/RX690

Revision A

1.5.2 Memory Card Slots

Table 1-12. List of Supported Memory Card

Priority	Slot	Compatible memory card	Standard	Max.	Remarks
capacity


		Memory Stick	“MemoryStick Standard” Format Specification Ver.1.42-00 compatible	128MB	Includes versions with memory select function

		MagicGate Memory Stick		128MB	Copy protection function is not supported

		MagicGate Memory Stick Duo			An adapter should be used

	Memory Stick/	Memory Stick PRO	Memory Stick PRO Format Specifications-without security Ver.1.02-00 compatible	4GB	Copy protection function is not supported

	Memory Stick	Memory Stick Duo	MemoryStick Duo Format Specification Ver.1.11-00 compatible		The Memory Stick Duo adapter should be
	PRO		used


		Memory Stick Pro Duo	MemoryStick PRO Duo Format Specification Ver.1.02-00 compatible		The Memory Stick Duo adapter should be
			used.


1		Memory Stick micro	Memory Stick Micro Format Specification Ver.1.02-00 compatible		The Memory Stick adapter for standard size
		should be used.


		SD (Security Digital)		2GB

		miniSD/microSD	SD Memory Card Specifications / PART1. Physical Layer Specification Ver. 2.0	The SD adapter should be used


		SDHC		Speed Class is not supported
		compatible
	SD/MMC		8GB
	miniSDHC/microSDHC		The SD adapter should be used
				Speed Class is not supported


		MultiMediaCard	MultiMediaCard Standard Ver. 4.1 compatible	64MB/	Only MultiMediaCard Plus supports 4GB
		MultiMediaCard Plus	4GB


	xD-Picture card	xD-Picture card	xD-Picture Card Specification Ver.1.20 compatible	2GB	Type M/H supported

2	CF Type II	Compact Flash	CF+ and CompactFlash Specification Revision 3.0 compatible	4GB	True-IDE compatible memory card only

Microdrive

Note: • Memory Stick/PRO, SD/MMC and xD-Picture Card shares the same slot.

•When cards are inserted in the two slots at once, the slot which will be accessed first is determined according to the priority shown in the table.

•To select a card that has been inserted in a non-active slot, first remove the card in the active slot.

•In memory card direct printing mode, the image files in the active slot are valid and have assigned frame numbers. The number of images will not change if a card is inserted in another nonselected slot.

•When the card inserted in the slot is accessed from the PC, only one drive is displayed at a time as a removable disk* and only the card that is in the active slot can be accessed via the removable disk. A card that has been inserted into a non-selected slot cannot be accessed.

(This is for Windows. For Macintosh, the card in the active slot will be mounted on the desktop.)

•Does not support 5V type of memory cards.

•When a memory card is being accessed, do not touch the memory card.

•For detailed information on the supported file system and formatting the memory card, refer to “1.7.2 Memory Card Direct Print Function (p.21)”.

PRODUCT DESCRIPTION

Interface

EPSON Stylus Photo RX680/RX685/RX690

Revision A

1.6 Control Panel

1.6.1 Operation Buttons & LED

The following tables explain the functions of the buttons and LEDs on the control panel.

Table 1-13. Operation Buttons & LEDs

	Button/LED	Function

		Power	Turns the power ON/OFF.

		Start	Starts printing.

		Copy	Goes to the stand alone copy mode.

		Memory Card	Goes to the memory card direct print mode.

		Specialty Print	Goes to the special mode that provides Print Photo Greeting Card,
		Reprint/Restore Photos, and Print on CD/DVD functions.


			• Stops operation and displays the menu screen.
			• Stops printing and ejects paper.
		Stop/Clear	• Returns the print settings of the current mode to their default
			and displays the Top screen. (Returns to the previous screen
Button			during printing maintaining the current settings)
		Setup	Goes to the Setup mode that provides maintenance menu (head
		cleaning, head alignment, etc.) and various option setting menu.


		Display/Crop	Goes to the zoom setting screen for the selected image.
		Changes the image preview layout (1-up, 9-up, etc.) on the LCD.


		Menu	Goes to the print setting menu screen.

		OK	Accepts the changed settings.

		Back	Cancels the previous operation.

		Cross Key	Selects a menu item of setting value.
		(up/down/left/right)


		+	Sets the number of copies.

		—


		CD Print Tray	Opens or closes the CD guide.

LED*		Power	Indicates the power On/Off status.

	Mode	Lights during the corresponding mode is selected.

Note * : See Table 1-14 for more information on the LEDs.

Table 1-14. LED Functions

Printer Status	Power LED	Mode LED

Power-on sequence	Flashing	OFF

Power-off sequence	Flashing	The current mode LED flashes

Fatal error	Flashing	All the mode LEDs flash

Standby/The panel being operated	ON	The current mode LED lights*

Printing/Scanning

Printing from an external device (PC/camera)

Running a head cleaning

Running a nozzle check

Printing head alignment pattern	Flashing	The current mode LED flashes*

Canceling a print job

Clipping of video

Making a backup copy

Performing Scan to Memory

Running a slide show	ON	The memory card mode LED lights

Displaying the screen-saver	ON	The memory card mode LED lights

Power save mode	ON	The current mode LED lights*

Note* : In the Setup mode, the mode LED corresponds to the previous mode lights.

Power LED

OK Button and

Memory card Button

Cross buttons

Mode LED

— Button

Setup Button LCD

+ Button

Power Button	Display/Crop Button	Menu Button	Back Button
	Start Button
	Tray Button
		Stop / Clear settings Button
	Specialty Print Button

	Power Button

Figure 1-5. Control Panel

PRODUCT DESCRIPTION

Control Panel

EPSON Stylus Photo RX680/RX685/RX690

Revision A

1.7 Specifications of Each Function

1.7.1 Stand-alone Copy Function

With the press of the Copy button, the printer goes into the Copy mode and displays a menu for copying. The menu allows the user to specify the number of copies up to 99, select a copy layout from the preset options shown in Table 1-15, and specify the desired scaling. Duplex copying is available with the optional duplex unit (standard equipment for EAI models). When the duplex unit is installed, menu options for duplex copying are enabled which includes “Dry Time”. The “Dry Time” allows the user to select a time period for drying paper printed on its front surface (refer to Table 1-16).

		Table 1-15. Copy Layout

	Layout	Description

	With Border	Makes a copy with 3mm of left/right/top/bottom white margins.

	Borderless	Makes a copy with no white margins.

	CD/DVD Copy	Makes a copy of a CD/DVD label directly on a CD/DVD.

	Wallet Copy	Makes a specified number of “2.5×3.5 inch” size copies of one document on a
	(EAI model only)	sheet of selected sized paper.

	Repeat Copy	Makes a specified number of copies of one document on a sheet of selected sized
	paper.


	Repeat Copy-4	Makes four copies of one document on a sheet of selected sized paper.

	2-up Copy	Makes a copy of two A4 or letter sized documents on a sheet of A4 or letter sized
	paper.


	Book/2-up	Makes a copy of two pages of opened book on a sheet of selected sized paper.

	Double Side 1-up*	Duplex copy using the duplex unit. Makes a copy of two pages on front and back
		sides of one sheet of paper.
	Book/Double Side*	Duplex copy using the duplex unit. Makes a copy of two pages of opened book on
		front and back sides of one sheet of selected sized paper.
	Double Side 2-up*	Duplex copy using the duplex unit. Makes a copy of four A4 or letter sized
	documents on front and back sides of one sheet of A4 or letter sized paper (two
		pages on each side).

Note* : The layouts are available only when the duplex unit is installed and the document type is set to “Text” or “Graphics”.

Table 1-16. Dry Time Setting

Setting	Document Type is Text	Document Type is Graphics

Standard	0 sec.	10 sec.

Longer	30 sec.	30 sec.

Longest	60 sec.	60 sec.

1.7.2 Memory Card Direct Print Function

This mode allows the user to directly print images stored in a memory card or media in an external device connected using the USB Host port. When a memory card is inserted in the slot, the printer automatically searches for all images in a memory card, and shows them on the LCD. The user can select images to be printed previewing them on the LCD and print specified number of copies up to 99 per image (up to 999 in total). “Print Index Sheet” function provided in the Memory Card menu makes it easier to specify images and their print settings. “Scan to Memory” function that stores scanned data directly to a memory card is also provided.

The following table shows media file formats supported by the printer.

Table 1-17. Supported File System, Types and Media Format

		Item	Specification

			DCF Version 1.0 or 2.0 *1 compliant. Other than those does
File System	not ensure proper operation. File systems available with the
			card reader are restricted by the host’s specification.

			• DCF Version 1.0 or 2.0 compliant
		Memory card	• DOS FAT format (FAT12/FAT16/FAT32 *2) with single
Media			partition (basic partitioned)

format		CD-R	ISO9660 Level1 (Joliet) format

		DVD	ISO9660 Level1 (Joliet), or ISO9660 Level1 (Joliet) & UDF
		Bridge format*3

		JPEG (*.JPG)	Image files conform to Exif Version 2.21. (Exif version 1.0/
		2.0/2.1/2.2/2.21 are supported)

		Camera definition	Camera definition files used for DPOF mode.
		file (*.MRK)	“MISCAUTOPRINT.MRK” file is valid.

File type		P.I.F definition file	Print layout definition files compliant with PRINT Image
		Framer Rev.2.1 specifications. Files in”/EPUDL/” directory
		(*.USD)
		are valid.


		P.I.F definition file	Print layout definition files compliant with PRINT Image
		Framer Rev.3.1 *4 specifications. Files in a memory card are
		(*.FD2)
		valid.


Note *1 :	For more information on the DCF specifications, see “Camera File System Standard DCF
	Version 2.0, JEIDA-CP-3461”.
*2: Available only when the memory card supports FAT32.
*3: UDF-formatted DVDs are not supported.
*4:	The memory card direct print functions supports level 1 of the P.I.F.Rev.3.1.

PRODUCT DESCRIPTION

Specifications of Each Function

EPSON Stylus Photo RX680/RX685/RX690

Revision A

1.7.3 Backup Function

The Backup Memory Card function provided in the Setup mode allows the user to make a backup copy of a memory card on a media in an external device. Printing the backed up images directly from the external device also can be made. Writing back data backed up on the external media to a memory card cannot be made.

The available media for the backup are as follows.

MO: 128MB/230MB/640MB/1.3GB

CD-R: 650MB/700MB*1,2

DVD-R: 4.7GB*2

USB flash memory*3

Note *1:	A backup on 700MB or larger size CD-R is not ensured.
*2:	The CD-R/DVD-R is burned in format described in Table 1-17.
*3:	The printer cannot recognize USB flash memory that incorporates a hub.

CHECK		Due to the file system restriction, a backup of a memory card
POINT		that has eight or more levels deep in folder hierarchy cannot be
		made on an ISO 9660 Level1-formatted CD-R.

Due to the logical format of the CD/DVD, the pathname length is restricted as described below;

•Destination media
ISO9660: up to 255byte
Joliet:	up to 240byte
•Source media: Memory card (FAT12/16/32): up to 260byte

CHECK	The maximum number of writing times
POINT	• FAT12/16-formatted media: up to 512 times (001 to 512)
	If any files other than backup folders exist in the route directly, the max.
	number of writings becomes less than 512 due to the MS-DOS restriction.
	When more than 512 times of writing history of an inserted MO is detected,
	the printer handles it as a backup error (file name, to folder hierarchy error).
	• CD-R:	640MB: up to 47 times
		700MB: up to 50 times
	This is because each session information must be saved.
	• DVD-R:	4.7GB: up to 274 times
	This is because each session information must be saved.

1.7.3.1 Backup Errors

If a backup operation is cancelled voluntarily or due to an error, a “Backup canceled” message appears with a hexadecimal 8-digit error code on the LCD. The following table lists the leftmost two-digit error codes that are controlled by the printer firmware.

Table 1-18. Backup Error FW Control Code List

Code	Meaning		Code	Meaning

0x00	No error		0xC0	No files to be backed up

0x10	Album function error		0xE7	Parameter error

0x20	Backup function error		0xE8	File open error

0xA0	Other ATAPI/SCSI command error		0xE9	Internal buffer overflow

0xA1	ModeSense command error		0xEA	CD/DVD format error

0xA2	ModeSelect command error		0xEB	Not used

0xA3	Get Disc Information command error		0xEC	Insufficient memory

0xA4	Get Track Information		0xED	Some data exist in the destination
command error		directory


0xA5	Synchronize Cache command error		0xEE	Not used

0xA6	CloseSession command error		0xEF	Write-protect error

0xA7	Read command error		0xF0	Read/write error

0xA8	Write command error		0xF1	Invalid file open mode

0xA9	Set Speed command error		0xF2	Seek error

0xAA	Eject command error		0xF3	Overflow of root directory

0xAB	Drive lock command error		0xF4	Overflow of file descriptor

0xAC	GetConfigration command error		0xF5	Invalid path name

0xAD	Verify command error		0xF6	No file exist

0xAE	Device error		0xF7	Medium was exchanged

0xB8	Short file name convert error		0xF8	Unformatted medium

0xB9	Unsupported device		0xF9	Device is not ready

0xBA	No medium		0xFA	Invalid device handle

0xBB	Not writable medium		0xFB	Invalid file descriptor

0xBC	Unsupported medium		0xFC	Not used

0xBD	Hierarchical directory error		0xFD	Backup initialization failed

0xBE	Path length is too long		0xFE	Acquiring memory pool failed

0xBF	File name is too long		0xFF	System error

PRODUCT DESCRIPTION

Specifications of Each Function

EPSON Stylus Photo RX680/RX685/RX690

Revision A

1.7.4 Camera Direct Print Function (USB Direct Print/PictBridge)

The printer supports direct print from a digital still camera that conforms to the specification shown in the following table. Basically the printer follows the print settings made by the digital camera, but changes some of the settings if the printer does not support the specified combination of paper type and layout.

	Table 1-19. Available DSC

USB Direct Print		PictBridge

DSCs conform to USB Direct Print	DSCs conform to CIPA DC-001-2003 Digital Photo
Solutions for Imaging Devices (DPS version 1.0) or
Protocol Revision 1.0.
	the Rev. 2.0.

1.7.5 Speciality Print Functions

The following table explains the functions of each menu provided in the Speciality Print mode.

	Table 1-20. Speciality Print Functions

Item		Function

	Allows the user to copy their silver halide film-based pictures. The
Reprint/Restore Photos	printer scans the pictures automatically detecting them as silver
	halide film-based picture, and makes a copy of them.

Photo Greeting card	This function is available with EAI models only. The user can create
a greeting card combining an image in a memory card and a template
(EAI model only)
selected from the preset options.


	This function allows the user to print an image in a memory card
Print on CD/DVD	directly on a CD/DVD. Printing a CD jacket on A4 or letter size
	paper is also provided.

	Allows the user to clip an image or multiple images from a moving
	image took by a digital still camera and stored in a memory card, and
	print it/them. The following two options are provided.
Play Movie and Print	• Print 1 Frame:	prints clipped one image on one sheet of paper.
Photos	• Print N Frames:	prints 12 images that are automatically clipped
		from the user-specified range. The images are
		printed on one sheet of paper using a preset
		layout.

1.7.6 Setup Mode

The Setup mode provides maintenance menus and various configuration setting menus. The following explains about the menu functions.

1.7.6.1 Maintenance Menu

	Table 1-21. Maintenance Menu Items & Functions

	Item	Function

	Nozzle Check	A nozzle check pattern to check the Printhead nozzles status is
	printed. A head cleaning can be run if necessary.


		Runs a printhead cleaning. The cleaning cannot be made when low
	Head Cleaning	ink level is detected. In such case, an ink low error is displayed
		instead of running the cleaning.

	LCD Brightness	This allows the user to adjust the brightness of the LCD.
	The settable range is -10 (minimum) to +10 (maximum).


		An adjustment to ensure the bi-directional print quality. Follow the
	Head Alignment	instructions displayed on the LCD to carry out the adjustment. The
	default value for each of the four modes is “5”, and can be changed

		within the range of 1 to 9.

		Runs an ink cartridge replacement sequence. The sequence also can
	Change Ink Cartridge	be run from the Ink Levels menu or by following the instructions on
		the LCD when an ink-related error occurs.

		Setting to “On” widens the platen gap to reduce friction between the
		printhead and thick paper. The setting is applied until the printer
	Thick Paper	power is turned off, and returns to the default (Off) at the next
	power-on.

		• Off: normal platen gap is applied.
		• On: the wider platen gap is applied.

		By setting to the “Memory Card Data”, the printer automatically
	Screen Saver Settings*	runs a slide show using images in a memory card as a screen saver
	when no control panel operation has been made for 180 seconds in
		standby mode. If no memory card is inserted, or when this is set to
		“Off”, the LCD display does not change.

Note* : This menu is not provided on EAI models.

PRODUCT DESCRIPTION

Specifications of Each Function

EPSON Stylus Photo RX680/RX685/RX690 Revision A

1.7.6.2 Setup Menus other than Maintenance

		Table 1-22. Setting Menu Items & Functions

	Item	Function

		The current ink levels of each of the cartridges are displayed in bar chart.
		After displaying the ink levels, the next operation can be selected from the
	Ink Levels	following two options; “End the ink levels display” or “Change Ink
	Cartridge”. The ink level is indicated in increment of 1%. Lower than 1%

		is rounded down. When the ink level becomes lower than 10%, “!” icon
		appears to notify the user of the ink low status

	CD Print Position	The printing range when printing on a CD/DVD or a sticker can be
	(EAI)	adjusted.
	CD/Sticker Print
	Position
	(Euro, Asia)

		Allows the user to make a backup copy of a memory card on media in an
		external device. The “Folder Select” displays a folder selection screen to
	Backup Memory	select the target folder in an external media to be printed.
	The “Folder Select” menu item is disabled (grayout) when any external
	Card
	device is connected and/or no image files is detected in the inserted

		memory card. See “1.7.3 Backup Function (p.22)” for more information
		on the backup function.

		The print settings to be used for the camera direct print (USB Direct Print/
		PictBridge) can be specified. When print settings (paper type, paper size,
	PictBridge Setup	layout, quality, auto correct) are specified from the DSC, the DSC settings
	are applied and the settings made here are ignored. For more details, see

		“1.7.4 Camera Direct Print Function (USB Direct Print/PictBridge)
		(p.23)”.

	Bluetooth	This menu is enabled only when the optional Bluetooth unit is connected.
	Settings	See “ ” for more information.

PRODUCT DESCRIPTION

Specifications of Each Function

C H A P T E R

OPERATING PRINCIPLES

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.1 Overview

This section describes the operating principles of the Stylus Photo RX680/RX685/ RX690 mechanism and Electrical Circuit Boards.

2.1.1 Printer Mechanism

The main structure of printer mechanism and the motors/sensors in each mechanism are shown in the following figure.

For Sensors names, See Table 2-1. «List of motors and sensors» (p26).

PF Motor

PF Encoder

Cover Open

Sensor

PF Roller

ASF Assy

Eject Roller

			PW Sensor
			CR Encoder
CR Assy			PE Sensor
		(1) Rear ASF
Printhead
		Position Sensor
Eject Frame			(2) Rear ASF
		Home Sensor

			(3) Duplex Unit
			Sensor
			(4) Front ASF
			Retard Home
CD-R Guide		(3)	Sensor
Sensor		(4)
(1)	(2)	ASF Sub
Ink System
		Motor
Assy			ASF Motor
CR Guide
		ASF Encoder
Shaft
		CR Motor

			APG Assy
	APG Sensor

Figure 2-1. Printer mechanism overview

2.1.2 Motors and Sensors

The following table shows the list of the motors and sensors. And the layout of the sensors and motors is shown on the following page.

Table 2-1. List of motors and sensors

Mechanism Names	Motors/Sensors	Ref.*

Printhead (p.28)		—

		CR Motor (p.28)	A
Carriage Mechanism (p.28)	CR Encoder (p.28)	1

PW Sensor (p.29)	2

		Cover Open Sensor (CO Sensor) (p.29)	3
APG Mechanism (p.30)	APG Phase Sensor (p.30)	4
Paper Loading/Feeding	PF motor (p.34)	B

PF encoder (p.34)	5
Mechanism (p.33)
PE sensor (p.34)	6


CD-R Mechanism (p.45)	CDR mode sensor (p.45)	7
		ASF motor (p.34)	C

		ASF Encoder (p.35)	8
Paper Loading/Feeding	ASF Sub motor (p.35)	D
Mechanism (p.33)	Front ASF retard home sensor (FP sensor) (p.35)	9
		Rear ASF phase sensor (RP sensor) (p.35)	10

		Rear ASF home sensor (RH sensor) (p.36)	11
Duplex Print Unit (p.42)	Duplex unit sensor (DP sensor) (p.36)	12

Ink System (p.49)		—
Note *:	The alphabet or the number listed in the “Ref.” column indicates the position of the
	corresponding sensor or motor in Figure 2-2 or Figure 2-3 on the next page.

OPERATING PRINCIPLES

Overview

EPSON Stylus Photo RX680/RX685/RX690

Revision A

Scanner Carriage Unit

CR Motor

CR encoder

Figure 2-4. Motors/sensors layout (scanner unit)

OPERATING PRINCIPLES

Overview

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.2 Printer Mechanism Operating Principles

2.2.1 Printhead

Print method	: On-demand ink jet (F-Mach Turbo 2 head)
Nozzle layout

	Colors		Bk, C, M, Y, Lc, Lm (6 colors)

	Number of nozzles	540 nozzles (90 Nozzles for each colors x 6
	columns)


	Nozzle pitch	0.282mm (1/90 inch), cross-layout

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

A#90

A#89

A#88

Paper Feed

Direction

A#3

A#2

A#1

B#90	C#90	D#90	E#90	F#90
B#89	C#89	D#89	E#89	F#89
B#88 C#88	D#88 E#88	F#88

B#3	C#3	D#3	E#3	F#3
C#2	E#2
B#2	D#2	F#2
C#1	E#1
B#1	D#1	F#1

Carriage Moving Direction

Figure 2-5. Nozzle layout

2.2.2 Carriage Mechanism

The Carriage mechanism consists of the CR motor, Timing belt, Driven pulley, CR guide shaft, Carriage unit, CR scale etc.

2.2.2.1 CR Motor

The CR motor is DC motor (with brushes) and it is controlled by positional/speed information obtained by means of the CR encoder.

Since the DC motor is used, the motor may generate a excessive heat in continuous operations. To avoid this, whether the motor is driven or not, a heating value is calculated at regular intervals to monitor the motor temperature while the power is ON. When the motor temperature exceeds a specified value, the operation is forcibly paused for a specified period of time.

		Table 2-2. CR motor specifications

	Item		Specifications
Type		DC motor with brushes (Mabuchi RS445PD-16175BR)
Voltage		42V (direct voltage) ± 5% (voltage applied to driver)

	Armature resistance		19.7Ω ± 10%
Feature	Inductance		11.6 mH (1kHz)
	Rotor inertia		16.2 gcm2
Drive Method		PWM, constant-current chopping
Driver		A6651 (Allegro company product)

2.2.2.2 CR Encoder

		Table 2-3. CR encoder specifications

	Item	Specifications
	Power supply voltages	3.3VDC ± 5%
	Output waveform	Phase A, phase B channel digital output (TTL)

	Output level	High output voltage: 2.4VDC (min.)
	Low output voltage: 0.6VDC (max.)

	Resolution	180 pulses/inch

	Signal detection section	Transmissive photo interrupter

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.2.2.3 PW Sensor

Detection items

Detects the left, right, top and bottom edges of a cut sheet.

Detects the CD-R center

Specifications

Item	Specifications
Type	Reflective photo interrupter (TOSHIBA S7K95)
Power supply voltages	3.3VDC ± 5%

Output waveform	1 channel analogue output

Result output

Detected state	Output
Paper Present	0V (reference value)

Paper Absent	3.3V (reference value)

2.2.2.4 Cover Open Sensor (CO Sensor)

When the Cover Open sensor detects that the scanner unit is open, the operation of the carriage is stopped to prevent users from getting injured. And then cover open error is displayed.

Driven pulley unit

CR encoder

CR scale

Timing belt

CR motor

Carriage unit

Figure 2-6. Carriage Mechanism

Detection item			Printhead
Detects the cover (scanner unit) open/close
Specifications
Item		Specifications
Type	Mechanical contact points (Mik Denshi MPU10980MMB0)
Power supply voltages	3.3VDC ± 5%
Output waveform	1 channel analogue output
Result outputs
Detected state	Output	PW sensor
Cover open	2.4V or more
Cover close	0.4V or less	CR encoder

Figure 2-7. Bottom of Carriage Unit

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.2.3 APG Mechanism

APG mechanism is provided to change the platen gap (PG) automatically within five settings using the driving force of the ASF motor.

To drive the APG mechanism for changing the platen gap, the carriage is moved to its home position to release the change lever, and then the forced clutch is switched to the Ink system/APG drive side.

Change lever

Carriage Assy

Change lever

Forced clutch

Figure 2-8. Switching of Forced Clutch (APG)

Also the APG mechanism is interlocked with CDR guide mechanism. When the platen gap is set to the CDR guide position, the driving force is transmitted to the CDR guide.

See “2.2.5.2 CDR Guide Auto Switching Operation” (p.45).

The next section describes the components of APG mechanism.

2.2.3.1 APG Phase Sensor

Detection item

Detects the PG position

Specifications

Item	Specifications
Type	Transmissive photo interrupter (TOSHIBATLP1243(C8))
Power supply voltages	3.3VDC ± 5%
Output waveform	1 channel analogue output

Result output

Detected state	Output
In PG position	2.4V or more
Out of PG position	0.4V or less
ASF motor	APG phase sensor

Carriage Assy

CR shaft Right PG cam

Left PG cam

Figure 2-9. APG mechanism

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690 Revision A

2.2.3.2 APG Driving Path

The driving path of ASF motor to drive APG is shown below.

7. Combination gear 17.6, 11.2A

ASF motor

1. Spur gear 18.5 (Forced clutch)		8. Combination gear 16, 12.8	10. Combination gear 17.6, 11.2B

2. Combination gear 24.5, 9.6	5. APG Planetary gear (Spur gear 9.6)	9. Spur gear 22.4	11. Flag combination gear 40.8,36
3. Spur gear 11.2 (I/S)	6. Transmissive combination gear 20.8, 11.2	Right PG cam	APG phase sensor

4. Spur gear 27.2 (I/S)	To A	Flowchart 2-2. ASF motor driving path (APG) (2)

APG phase sensor

11. Flag combination gear 40.8,36

APG Assy

Flowchart 2-1. ASF motor driving path (APG) (1)

5. APG Planetary gear (Spur gear 9.6)

APG Assy

6. Transmissive combination gear (Transmits the driving force to APG)

6. Transmissive	11		8
combination gear
(Transmits the			9
driving force to APG)
			7
	6	10	Right PG cam

Figure 2-11. ASF motor driving path (APG) (2)

Ink system (I/S)

ASF motor (Rear)

Figure 2-10. ASF motor driving path (APG) (1)

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.2.3.3 Basic Operations

The basic operations of APG mechanism are described below.

Basic operations

Table 2-4. Basic operations

	Switching to the APG	To drive the APG mechanism for changing PG position, the carriage is moved to its home position to release the change lever, and then the forced clutch is switched to the Ink system/APG
	drive side.

The counterclockwise rotation of the ASF motor switches the APG Planetary gear to the APG drive, and rotate the right PG cam on the carriage shaft to change the PG position. Each PG PG position change action position is set on the surface of the right PG cam, so the PG position is changed from pos.1 to pos.5 in that order by the counterclockwise rotation of the ASF motor. When the position is

set to Pos.5, the further rotation makes the position return to pos.1.

ASF motor control

The ASF motor is controlled by the APG phase sensor and ASF encoder at all times while the APG mechanism is driven.

About the output and meaning of APG phase sensor, See “2.2.3.1 APG Phase Sensor” (p30).

APG initialization

When the PG position is unknown at power-on or after recovering from an error, the printer conducts APG initialization to set the PG position to Pos.1.

Table 2-5. PG Position transition diagram

							CDR		PG(++)
PG
APG phase sensor	High	Low	High	Low	High	Low	High	Low	High	Low
Type	Pos.1		Pos.2		Pos.3		Pos.4		Pos.5
PG(-)		PG(Typ.)		PG(+)		CDR		PG(++)	→
	→	→	→	→
PG dimensions (mm)	1.2	1.7	2.35	4.2	4.2	(To Pos.1)

Position name	Home position		Normal position		PG large position		CDR guide drive position		CD/DVD print position
			Printing on Plain paper		Printing on envelope
Printing	Printing on Epson paper			Avoid friction at		—		Printing on CD/DVD
	Avoid friction at PG(-)
				PG(Typ.)

Specification	The home position at						CDR guide drive
	power-on (when
Not printing		—		—		(CDR planetary gear is		Ink cartridge replacement
initialized)
						released)
	Capping/wiping

Rotational direction of ASF					Counterclockwise
motor

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.2.4 Paper Loading/Feeding Mechanism

The paper loading mechanism consists of Front ASF, Rear ASF and CDR guide. This mechanism transports the paper from each ASF or CDR guide to the paper feeding mechanism such as PF roller. When the optional Duplex Print unit is installed, automatic duplex printing is available. After printing on the front side, the paper is automatically reversed in the Duplex Print Unit to print on the back side.

The outline of the paper loading/feeding mechanism is described below.

When a print job is started from the printer driver or the control panel, the printer checks the selected paper path and print data for any error. Then the printer sets the PG position using the APG and moves the carriage toward 80 digit side from its home position. The motors of the ASF mechanism then start to move to load the paper or CD. The fed paper is transported to the PF roller and its skew is corrected, and the paper is transported to the print position. Then the paper feeding mechanism starts, and the paper is transported up to the paper ejecting process. This printer is equipped with three types of paper feeding mechanism; Front ASF, Rear ASF and CDR guide.

PAPER FEEDING PATH (FEEDING MECHANISM)

PF motor

PF Timing belt

	PF roller pulley (PF roller)		EJ roller pulley (EJ roller)



PF roller+ driven roller (Upper Paper Guide)		EJ roller+Star wheel (EJ frame)

Flowchart 2-3. PF motor driving path

PF roller

Driven roller (Upper Paper Guide)

Front Paper Guide

PF scale

EJ frame

EJ roller

PF Timing belt

PF motor

Figure 2-12. Paper feeding mechanism

In following pages, the specifications of the motors/sensors used in the Front ASF, Rear ASF, Duplex unit, paper feeding mechanism, and their operating principles are described.

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.2.4.1 Specifications of Motors/Sensors

The specifications of the motors/sensors used in the paper feeding mechanisms are described below.

PF MOTOR

The PF motor provides the driving force for paper feeding, CR lock/wiper, CDR Guide drive, Idle roller drive for the front ASF, Duplex print unit drive, etc. The PF motor is controlled by the PF encoder.

		Table 2-6. PF motor specifications

	Item		Specifications

Type		DC motor with brushes (MABUCHI, RS445PD-18140BR)
Voltage		42V (direct voltage) ± 5% (applied voltage for the driver)

	Armature resistance		12.2W ± 10%
Feature
Inductance		7.45mH (1kHz)
	Rotor inertia		16.2 gcm2

Driving method		PWM, constant-current chopping

Driver		A6651 (Allegro company product)

PF encoder

		Table 2-7. PF encoder specifications

	Item	Specifications
	Power supply voltages	3.3VDC ± 5%
	Output waveform	Phase A, phase B 2 channel digital output (TTL)
	Output level	High output voltage: 2.4V DC (min.)
	Low output voltage: 0.4V DC (max.)

	Resolution	360 pulse/inch
	Signal detection section	Transmissive photo interrupter

PE SENSOR

Detection items

Detects the leading edge of the paper to control the feeding condition

Detects the rear edge of the paper

Specifications

Item	Specifications
Type	Transmissive photo interrupter (NIPPON ALEPH, OJ-611-A8)

Power supply voltages	3.3VDC ± 5%
Output waveform	1 channel analogue output

Result output

Detected state	Output
Paper present	2.4V or more

Paper absent	0.4V or less

ASF MOTOR

The ASF motor provides the driving force for the LD roller of the Rear ASF, APG, Ink system, pick-up roller of the front ASF, etc. The ASF motor is controlled by the ASF encoder.

Table 2-8. ASF motor specifications

	Item	Specifications
Type	DC motor with brushes (MABUCHI, RS385PH-13200R)
Voltage	42V (direct voltage) ± 5% (applied voltage for the driver)

	Armature resistance	21.9Ω ± 10%
Feature	Inductance	9.21 mH (1kHz)
	Rotor inertia	7.45 gcm2
Driving method	PWM, constant-current chopping
Driver	A6651 (Allegro company product)

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

ASF Encoder

	Table 2-9. ASF encoder specifications

Item		Specifications
Power supply voltages		3.3VDC ± 5%

Output waveform		Phase A, Phase B 2 channel digital output (TTL)

Output level		High output voltage: 2.4V DC (min.)
	Low output voltage: 0.4V DC (max.)


Resolution		180 pulse/inch

Signal detection section		Transmissive photo interrupter

ASF Sub motor

The ASF Sub motor provides the driving force for the hopper of the Rear ASF, Paper Back lever control and Retard roller of the front ASF.

Table 2-10. ASF Sub motor specifications

	Item	Specifications
Type	DC motor with brushes (MABUCHI, FC280SA-08600HR)
Voltage	42V (direct voltage) ± 5% (applied voltage for the driver)

	Armature resistance	47.1Ω ± 15%
Feature	Inductance	26.0 mH (1kHz)
	Rotor inertia	4.03 gcm2
Driving method	PWM, constant-current chopping
Driver	A6651 (Allegro company product)

Front ASF retard home sensor (FP sensor)

Detection item

Detects the condition of Front Retard roller

Specifications

Item	Specifications
Type	Transmissive photo interrupter (TOSHIBA TLP1243(C8))

Power supply voltages	3.3VDC ± 5%
Output waveform	1 channel analogue output

Result output

Detected state	Output
Front Retard UP	2.4V or more

Front Retard Home	0.4V or less

REAR ASF PHASE SENSOR (RP SENSOR)

Detection item

Detects the hopper position of Rear ASF

Specifications

Item	Specifications
Type	Transmissive photo interrupter (TOSHIBA TLP1243(C8))
Power supply voltages	3.3VDC ± 5%

Output waveform	1 channel analogue output

Result output

Detected state	Output
In Rear ASF position	2.4V or more
Between the positions	0.4V or less

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

REAR ASF HOME SENSOR (RH SENSOR)

Detection item

Detects the position of Rear ASF hopper (Home/out)

Specifications

Item	Specifications
Type	Transmissive photo interrupter (TOSHIBA TLP1243(C8))

Power supply voltages	3.3VDC ± 5%
Output waveform	1 channel analogue output

Result output

Detected state	Output
Out of home position	2.4V or more

In home position	0.4V or less

DUPLEX UNIT SENSOR (DP SENSOR)

Detection item

Detects the Duplex unit presence

Specifications

Item	Specifications
Type	Mechanical contact points (Mik Denshi MPU10980MMB0)
Power supply voltages	3.3VDC ± 5%

Output waveform	1 channel analogue output

Result output

Detected state	Output
Duplex unit absent	2.4V or more
Duplex unit present	0.4V or less

2.2.4.2 Front Paper Feeding Mechanism (Front ASF)

PAPER FEEDING PATH

The following figure shows the paper feeding path in the front paper feeding.

	Front Paper Guide
PF roller pulley	EJ frame

Timing belt

EJ roller pulley

Cassette Assy

PF motor

Figure 2-13. Front ASF paper feeding path

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

MOTOR DRIVE TRANSMISSION

The driving force of the ASF sub motor is transmitted as shown below in the front feeding operation.

ASF sub motor (CCW)	1.2 RASF Planetary gear
<ASF sub motor status>

	CCW: to drive Front retard	Retard ASF Assy
1. RASF Planetary gear (Spur gear12)	CW: to drive hopper

2. RASF Planetary gear (Spur gear12)
3. Spur gear 23A	Right side of printer

4. Spur gear 23B

PF motor (CW)

PF Timing belt

PF roller pulley (PF roller)

1.Spur gear 12PF (PF roller)

2.FASF Planetary gear (Combination gear12, 2, 12)

3.Combination gear 28.7,18

4.Spur gear 24.1 RMD

5.Spur gear 24 FASF

6. Spur gear 34.5

Idle roller

Flowchart 2-5. PF motor drive force transmission

	4	Left side of printer
6. Combination gear 32.11
8

	5
7. Spur gear 11	7
	6
					PF motor (CW)
8. Spur gear cam 27	Front retard roller

Retard reset shaft (switch)	Retard reset shaft	Front Retard roller			1
	3
	ASF sub motor (CCW)			1. Spur gear 12PF
	6	4	2	(on the PF roller)

Front retard roller (UP)			5

Flowchart 2-4. ASF sub motor drive force transmission

2. FASF Planetary gear

CW: contacts with 1 to drive Idle roller CCW: stops the separation

Figure 2-14. PF motor drive force transmission

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

ASF motor (CCW)			OPERATION SEQUENCE OVERVIEW (FRONT ASF)

			The operation of the front paper feeding mechanism is described below.
1. Spur gear18.5		3. ASF Planetary gear	1.	The condition before starting paper feeding is like below due to the power-on

		<ASF motor status>		sequence or the previous paper feed sequence.
2. Combination gear 25.5, 20.8, 11.2		CCW: to drive Pick-up roller
		Front position sensor	L (Front Retard Home)
Pick-up roller	CW: to drive LD roller
			Rear Home sensor	L (Rear Home)
3. ASF Planetary gear (spur gear 18.4)		Rear ASF Right		Rear position sensor	H (Rear Pos.)
			In this condition, Rear ASF is in its home position and the Front Retard roller is in
4. Spur gear30.4				the Home position (down). At this time, RASF Planetary gear is free from the cam
			of the Spur gear 34.4, so the ASF Sub motor can cause either the Rear ASF hopper

5. Spur gear 11.2				to drive or the Front Retard roller to move up/down.
			See Flowchart 2-4 (p.37)/ Figure 2-3 (p.27)/ Flowchart 2-7 (p.40).
		3	2.	When starting paper feed from the Front ASF, the PF motor rotates clockwise a
Timing belt PU2		2		specified number of steps to move the FASF Planetary gear toward the Idle roller
	4
			side. See Figure 2-14“PF motor drive force transmission” (p.37).
		1
6. Spur gear 9.6 pulley		3.	The counterclockwise rotation of the ASF Sub motor moves the RASF Planetary
	6
			gear toward the Front Retard side. The ASF Sub motor keeps counterclockwise
		5
7. Spur gear 14.4	10			rotation to lift up the Front Retard. At this time the Front Position sensor is
			monitored. When the Front position sensor becomes High state, the rise of the

8. Spur gear 10				Front Retard is completed and the ASF Sub motor stops. In this manner the Front
7			Retard comes into contact with the Idle roller. This allows the paper to be fed by
	ASF motor (Rear)
		the rotation of the Idle roller. See Flowchart 2-4 (p.37)/ Figure 2-15 (p.39).
9. Clutch PU

Timing belt PU1		Timing belt PU2

Timing belt PU1

10. Pick-up pulley

Pick-up roller

Flowchart 2-6. ASF motor drive force transmission

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

ASF sub motor

RASF Planetary gear

Front retard roller

FP sensor

Front retard Home

Idle roller

Front retard Up

Front Retard roller

Spur gear cam

Figure 2-15. Condition before starting front feeding

4.The clockwise rotation of the PF motor causes the Idle roller/Front Retard roller to rotate. Then the printer starts to monitor the paper with the PE sensor.

5.The rotation of a specified number of steps of the PF motor causes the ASF motor to rotate counterclockwise to move the ASF Planetary gear toward the pick-up roller side. The ASF motor keeps counterclockwise rotation monitoring load to drive the pick-up roller, and the front feeding is started. (If a high load is detected while the ASF motor rotates a specified number of steps, the printer judges that no paper is loaded and indicates the Paper Out error.)

See Flowchart 2-6 (p.38).

6.The rotation of the Pick-up roller feeds the paper to the Idle roller/Front Retard roller in the cassette. When the ASF motor rotates a specified number of steps, the paper reaches the Idle roller/Front Retard roller. Then those rollers which are started to rotate in step 4 transport the paper until it is detected by the PE sensor. At this time the ASF motor is decelerated to stop the rotation of the Pick-up roller.

Right side

Upper paper guide FASF

PE sensor

Front retard roller

EJ roller

Idle roller		Pick-up roller		PF roller

Figure 2-16. Front ASF paper feeding path

7.When the PE sensor detects the paper presence, the paper is moved forward a preset number of steps to the print position. With this step the Front paper feeding operation is completed. Then the PF roller which is rotated by the PF motor starts the further paper feeding operation.

8.After the Front paper feeding operation is completed, the ASF motor rotates counterclockwise to bring the Front Retard roller down so that it returns to the home position. When the Front Position sensor goes to Low state, the ASF Sub motor is stopped.

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

information on the

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.2.4.3 Rear Paper Feeding Mechanism (Rear ASF)

PAPER FEEDING PATH

The following figure shows the paper feeding path in the Rear paper feeding operation.

Rear ASF Assy

Upper Paper Guide

EJ frame

PF roller pulley

EJ roller pulley

Timing belt

PF motor

Figure 2-17. Rear ASF paper feeding path

MOTOR DRIVE TRANSMISSION

The driving force of the ASF sub motor is transmitted as shown below in the rear feeding operation. See Figure 2-12“Paper feeding mechanism” (p.33) for

PF motor driving path.

ASF sub motor

1. RASF Planetary gear (Spur gear 12)

2. RASF Planetary gear (Spur gear 12)

3. Hopper combination gear 39.5, 10.4

4. Spur gear 34.4

5. Hopper release cam

Hopper

1,2 RASF Planetary gear

CCW: to drive Front retard CW: to drive hopper

Right side of printer

		3
	5	1
	6	2
	4

		7

	LD roller	ASF Sub motor

Hopper
		Paper back cam
6. Spur gear 24FASF (inside)	7. Flag gear (outside)
Paper back cam

Flowchart 2-7. ASF sub motor drive force transmission

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

ASF motor (CW)
		3. ASF Planetary gear
		<ASF motor status>
1. Spur gear 18.5		CW: to drive the LD roller
	Right side of printer	CCW: to drive pick-up roller

2. Combination gear 25.5, 20.8, 11.2

3. ASF Planetary gear (Spur gear 18.4)

4. Flag gear RASF

5. Spur gear 24LD (outside)		4

	5	3
LD roller	2

	LD roller	1

	ASF motor (CW)

Flowchart 2-8. ASF motor drive force transmission

OPERATION SEQUENCE OVERVIEW (REAR ASF)

The operation of the rear paper feeding mechanism is described below.

1.Before starting the Rear ASF paper feeding, the Rear ASF is in its home position as it does before the front feeding. (Step 1.“ Operation Sequence Overview (front ASF) (p.38)”)

2.The clockwise rotation of the ASF Sub motor moves the RASF Planetary gear toward the Hopper, and the printer starts to monitor the Rear Position sensor. The

Rear Position sensor goes to low state after the ASF Sub motor starts to rotate. The motor stops when the sensor becomes high state. See Flowchart 2-7 (p.40).

3.The driving force of the ASF Sub motor causes the Paper Back cam to press down

the Paper Back lever, and the Hopper Release cam lifts the hopper so that the hopper contacts the LD roller. See Flowchart 2-7 (p.40).

4.The clockwise rotation of the ASF motor moves the ASF Planetary gear toward the LD roller to start the rear feeding. From this time the printer starts to monitor

the feeding operation using the PE sensor. At the same time the PF motor starts to rotate clockwise to rotate the PF roller. See Flowchart 2-8 (p.41).

5.When the PE sensor detects the paper presence, the ASF/PF motor is driven to correct the paper skew. Then the paper is moved forward in a preset number of steps to the print position. With this step the rear paper feeding operation is completed. In the next step, the PF roller driven by the PF motor starts the paper feeding process.

6.While the printer monitors the Rear Position sensor, the ASF sub motor rotates clockwise to cause the hopper release cam to move the hopper toward the print position and the Paper Back cam lifts the Paper Back lever up to avoid double feed.

Retard roller (RASF)

EJ roller

PF roller

Figure 2-18. Rear ASF paper feeding path

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.2.4.4 Duplex Print Unit

When the optional Duplex unit is installed, the automatic Duplex print becomes possible. The paper printed on its front side is automatically reversed and then printed on its back side.

When the printer receives a duplex print job from the driver, the printed paper is dried and transported to the Duplex unit, then reversed in it and reloaded to the printer.

PAPER FEEDING PATH

Duplex unit

D21 roller

D57 roller Paper guide front

EJ frame

PF roller pulley

Timing belt

PF motor

Figure 2-19. Duplex unit paper feeding path

MOTOR DRIVE TRANSMISSION

PF motor (CCW/CW)

PF Timing belt

PF roller pulley

1.Spur gear 12PF (on PF roller)

2.Spur gear 40

3.Spur gear 19 (on Rear ASF)

4.Spur gear 20 (on Rear ASF)

5.Combination gear 28, 20 (on Rear ASF)

6.Combination gear28, 14.4

7.Combination gear 32, 17.6

8.Combination gear16, 16

9. Duplex Planetary gear CCW: under spur gear 19.2 CW: above spur gear 19.2

10. Spur gear 19.2 CCW: under spur gear 19.2 CW: above spur gear 19.2

11. Combination gear16, 16

12.Spur gear32

D57 roller

13.Spur gear32

14.Combination gear 65.6, 44.8

15.Spur gear 17.6

D21 roller

Flowchart 2-9. PF motor drive force transmission

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

	10. Spur gear 19.2	D57 roller
	<PF motor status>

	CW: outer side transmits the drive to (11)
	CCW: inner side transmits the drive to (11)

		15
12
11	9	D21 roller

10

	8
	7
	6
	5
	4	9. Duplex Planetary gear
	3	<PF motor status>
		Transmits both of CCW/CW
		rotation in a fixed direction.
		2
		1

PF roller pulley

PF Timing belt

PF motor

Figure 2-20. Components of Duplex unit

OPERATION SEQUENCE OVERVIEW (DUPLEX UNIT)

The driving force from the PF motor causes the Planetary gear in the Duplex unit to move so that the paper is fed inside the Duplex unit. Both the rotational directions of the motor cause the operation, however, to reduce wear of rollers and motor load, the driving force from the clockwise rotation of the PF motor is not transmitted to the Duplex unit (this is referred to as “Duplex Auto Shutoff” in this manual) in cases listed below. (The counterclockwise rotation of the PF motor always moves the Duplex unit.)

When the power is turned ON, or when recovers from the low power mode

When the paper exists in the Duplex mode

When the CDR print is completed.

The following part describes the operational sequence of the Duplex unit.

1.Paper rear edge detection for setting the reverse standard position

After the printing on the front side is completed, the PE motor transports the paper until its Rear edge is detected by the PE sensor. Because the Duplex unit is in the “Duplex Auto Shutoff” state, the PF motor clockwise drive is not transmitted.

2.Drying the front printed side

The PF motor pauses for a fixed time period specified by the printer driver for drying the paper (1st dry process) and the printer indicates on the LCD that it is in the drying process. Then, the PF motor rotates clockwise to transport the paper until its rear edge reaches the EJ roller, and pauses again for drying the paper for a fixed time period specified by the driver for 2nd dry process.

Left side	1st dry process	2nd dry process
	PE sensor
	PF roller	EJ roller

Figure 2-21. Drying operation

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

3.Detection of the rear edge of the paper after drying

After the drying sequence, the drying indication on the LCD disappears and then the PF motor rotates counterclockwise until the PF sensor detects the paper presence.

4.Transporting into the Duplex unit

After the PF sensor detects the paper, the PF motor rotates a specified number of steps to transport the paper to the reverse start position and then stops. At this time the printer quits the Duplex Auto Shutoff state so that the clockwise rotation of the PF motor is transmitted to the Duplex unit.

EJ roller pulley

PE sensor

PF roller

Figure 2-22. Duplex unit paper feeding path (1)

5.Reversing the paper

After the printer quits the Duplex Auto Shutoff state, the clockwise rotation of the PF motor makes the paper reverse and transports it to the PE sensor.

D57 roller		Left side
		EJ roller
	PE sensor	PF motor

PF roller

Figure 2-23. Duplex unit paper feeding path (2)

6.Paper setting for printing on the back side

After the leading edge of the paper is detected by the PE sensor, the paper is moved forward a preset number of steps which is specified by paper type. Then printing on the back side is started.

	Lower Guide (Duplex)
D57 roller	Left side

D21 roller

EJ roller

Figure 2-24. Duplex unit paper feeding path (3)

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.2.5 CD-R Mechanism

This printer supports direct print on a CDR with the CDR tray. Manually switching between ASF feed and CD feed using the lever is not required as the previous models. Stylus Photo RX680/RX685/RX690 equip with the automatic switching operation driven by the PF motor.

This section describes the details of the Auto CDR guide switching operation, CDR tray transporting path and their components.

2.2.5.1 CDR Tray Transporting Path and Components

CDR tray transporting path and the components are shown below.

Front Paper Guide

EJ frame

PF roller pulley

Timing belt

EJ roller pulley

CDR guide

PF motor

Figure 2-25. CDR feeding path

CDR MODE SENSOR

Detection item

Detects the condition of the CDR guide

Specifications

Item	Specifications
Type	Mechanical contact points (Mik Denshi MPU10980MNB0)

Power supply voltages	3.3VDC ± 5%
Output waveform	1 channel analogue output

Result output

Detected state	Output

Position Hi/Low	2.4V or more

Position not fixed (moving)	0.4V or less

2.2.5.2 CDR Guide Auto Switching Operation

Pressing the “CD guide open/close” button moves the CDR guide from the ASF paper feed position to the CDR print position, or to the opposite direction. However, the CDR guide does not move in cases listed below.

During other operations

When the printer has received a print job other than CDR print job

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

MOTOR DRIVE TRANSMISSION

The driving force of the PF motor is transmitted as shown below in the CDR guide position switching operation.

PF motor (CCW:UP/CW:DOWN)

PF Timing belt

EJ roller pulley

1. Spur gear 16 (above EJ roller)

2. CDR Planetary gear

moving Up: above planetary Spur gear12 moving Down: under planetary spur gear 12

3.Spur gear 12A

4.Spur gear 12B

5.Combination gear 36, 24

	6. Spur gear 24L	CDR shaft		9. Spur gear 24R




7. Combination gear 36, 24L			10. Combination gear 36, 24R



8. Combination gear 35.2, 8.8L			11. Combination gear 35.2, 8.8R



	CDR guide L side			CDR guide R side

Flowchart 2-10. PF motor drive force transmission (CDR mechanism)

CDR guide

2.CDR Planetary gear

CCW: move CDR guide upward

CW: move the guide downward

3	4
1		6
5	7

EJ roller pulley

PF motor

PF Timing belt

Figure 2-26. PF motor drive force transmission (CDR mechanism)

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

OPERATION SEQUENCE OVERVIEW (CDR MECHANISM)

When the PG position is switched to the CDR guide drive position by the APG mechanism, the CDR Link arm which is interlocked with the Left PG cam releases the lock of the CDR Planetary gear. In this manner the driving force of the PF motor is transmitted to the CDR guide.

The state of the CDR guide is controlled by the flag and the CDR mode sensor. If the misalignment with the CDR guide is detected, the CDR retrying sequence is performed to correct the misalignment by moving the CDR guide up/down according to the state of the flag.

The operational sequences of the CDR guide Up/Down are described below.Lifting the CDR guide (CDR printing position)

Left side	CDR Link arm	CDR Planetary gear	Left PG cam	1. The PG position is switched to the CDR guide drive position by the APG
mechanism to release the lock of the CDR Planetary gear. See Figure

				2-27.“Switching of CDR Link arm and Planetary gear (When lifted)”(p.47).

	2. The PF motor rotates counterclockwise to lift the CDR guide up. During this
	operation, the PF motor load is monitored. At this time the CDR mode sensor goes
	to High state.
	EJ frame	CDR mode sensor	Sensor
CDR Planetary gear locked	retaining rib
CDR guide position
Left PG cam

Left side	Left side	CDR guide


		Figure 2-28. CDR guide/mode sensor at starting to lift up
CDR Link arm	3. When the CDR mode sensor goes to Low state, the PF motor rotates decelerating a
Figure 2-27. Switching of CDR Link arm and Planetary gear (When lifted)	specified number of steps to move the CDR guide to the CDR printing position.
With this step the lifting of the CDR guide is completed.

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

EJ frame	CDR guide	Carriage

Left side

CDR mode sensor

Action at CDR guide lifting

Sensor retaining rib

Figure 2-29. CDR guide/mode sensor at completion of lift up

4.After the lifting the CDR guide is completed, the PF motor rotates clockwise a specified number of steps to release the pressure of the CDR Planetary gear. Then the PG position is switched to the PG(-) by the APG mechanism. In this manner the CDR Planetary gear is locked so that the driving force of the PF motor is not transmitted.

CDR guide

PE sensor	PF roller	EJ roller

Figure 2-30. Tray transporting path at CDR printing

Moving down the CDR guide (ASF position)

1.The PG position is switched to the CDR guide drive position by APG mechanism to release the lock of CDR Planetary gear.

2.The clockwise rotation of the PF motor moves the CDR guide downward. During this operation, the PF motor load is monitored. At this time the CDR mode sensor goes to High state.

3.When the CDR mode sensor goes to Low state, the PF motor rotates decelerating clockwise a specified number of steps to move the CDR guide to the ASF position. With this step the moving down the CDR guide is completed.

4.After the moving down the CDR guide is completed, the PF motor rotates counterclockwise a specified number of steps to release the pressure of the CDR Planetary gear. Then the PG position is switched to the PG(-) by the APG mechanism. In this manner the CDR Planetary gear is locked so that the driving force of the PF motor is not transmitted.

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.2.6 Ink System

The Ink system consists of the mechanisms shown below.

Carriage lock

Pump unit

Figure 2-31. External view of the Ink system

2.2.6.1 Pump Unit

The Pump unit is provided to absorb ink from the Printhead or Cap unit.

Both of the Pump unit and the paper feeding mechanism are driven by the ASF motor. When driving the Pump unit, the carriage is moved to its home position and the change lever is switched to the ink system side so that the driving force of the ASF motor is transmitted to the Pump unit. See Figure 2-8.“Switching of Forced Clutch (APG)”(p.30).

The relationship between the ASF motor and the Pump unit is shown below.

See Table 2-8. “ASF motor specifications” (p.34) for the specifications of the ASF motor.

Table 2-11. ASF motor drive and the Pump unit

ASF motor* drive direction	Pump unit operation
Clockwise	Absorb

Counterclockwise	Release

Note «*»: The rotational direction clockwise/counterclockwise is defined seen from the output shaft side.

2.2.6.2 Cap Unit

The Cap unit is provided to keep the airtightness inside the cap by capping the surface of the printhead when the ink is absorbed by the Pump unit.

When the carriage unit moves to the absorbing position on the edge of HP side, the carriage causes the cap to slide so that the cap goes up and adhere to the head.

Also the Cap unit contains the Carriage Lock unit and the Wiper unit. When the carriage is in the carriage lock position/wiping position, the carriage lock set/reset and wiper set/ reset operations are conducted by the driving force of the PF motor.

The relationship between the PF motor drive and the Cap unit is shown below.

Table 2-12. PF motor drive and the Cap unit

	PF motor* drive direction*	Carriage lock/Wiper operation

	Clockwise	Carriage lock set
	Wiper Up


	Counterclockwise	Carriage lock reset
	Wiper Down

Note «*»: The rotational direction clockwise/counterclockwise is defined seen from the output shaft side.

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.2.7 Scanner Unit

The Scanner unit consists of the Scanner Carriage unit, CR motor, CR encoder sensor, etc. See Figure 2-4.“Motors/sensors layout (scanner unit)”(p.27).

Following describes the mechanism of the components.

Scanner Carriage Unit

The Scanner Carriage unit consists of the CIS board, the Rod Lens Array, and the LED (light source). The following explains about each of the components.

CIS Board

The 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 light emitting 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. The light source (LEDs) emits light, and these lenses read the light reflected off the original, 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.

LED

Stylus Photo RX680/RX685/RX690 use three color LEDs (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		CIS Board

Figure 2-32. Components of the Scanner Carriage Unit

CR Motor & CR Encoder

The CR motor is a DC motor with brush. It drives the Carriage unit through the timing belt according to the carriage position and speed information obtained by the CR encoder.

The following shows the specifications of the motor and the encoder.

	Table 2-13. CR motor specifications

Item	Specifications
Type	DC motor with brushes (Mabuchi RK-370CA-09900)
Voltage	42V (direct voltage) ± 5% (voltage applied to driver)

Drive Method	PWM

Driver	A6651 (Allegro company product)

	Table 2-14. CR Encoder specifications

Item		Specifications
Power supply voltages		3.3VDC ± 0.2V

Output waveform		Phase A, phase B channel digital output (TTL)
Output level		High output voltage: 2.4VDC (min.)
	Low output voltage: 0.6VDC (max.)


Resolution		180 pulses/inch
Signal detection section		Transmissive photo interrupter

OPERATING PRINCIPLES

Printer Mechanism Operating Principles

EPSON Stylus Photo RX680/RX685/RX690

Revision A

2.3 Electrical Circuits Operating Principles

The electric circuits of the Stylus Photo RX680/RX685/RX690 consists of the following boards.

Figure 2-33. Main boards and types

Name	Type
Main board	C686MAIN

Power supply board	C685PSB/PSE

Panel board	C686PNL+C685PNL-B

Card board	C685STG

2.3.1 Features

The parallel printing is realized by the adoption of SOC06H which has one main processor and six processors for image processing

The wide memory access is realized by mounting the 166Mhz DDR1SDRAM on the local side as the image processing memory.

The ASIC with a built-in CPU is adopted for card controlling. The connection method with SOC is changed from the previous CPU bus connection to the USB Host connection to improve the card access speed. This IC has the threeports USB2.0 HUB function and using one port for the external USB Host I/F realizes the USB2.0 Host function.

Installing the IC which adopts to Multi-common reduces the number of printing paths so that the printing process time is shortened.

The costs for the logic power supply and the drive of motors are reduced by installing A6651, a motor driver with a built-in power source.

The MW buffer size is reduced to one-third compared to that of Stylus Photo RX700 by installing UBEC (Ultra Block Encode).

The color LCD (2.5 inch TFT display) is installed as standard.

When shifting to low power mode, the following operation is performed to reduce the power consumption.

•Turns the power supply voltage down

•Intercepts the optical current of the Optical sensor

•Stops the drive circuits of the motors

•Stops the UDL clock in ASIC

•Shifts the CPU core low consumption mode

•High efficient power supply circuit

•Non-excitation of the printer motor

•Stops the head drive circuit

•Turns the CIS scanner off & releases the excitation of the scanner motor

•Turns the preview monitor off

•Shifts to Card ASIC suspend mode

OPERATING PRINCIPLES

Electrical Circuits Operating Principles

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Service manual для принтера Epson RX680-685-690

PRODUCT DESCRIPTION

1.1 Features

Printing Specifications

Basic Specifications

1.2.2 Ink Cartridge

1.2.3 Print Mode

1.2.4 Supported Paper

1.2.5 Printing Area

1.3 Scanner Specifications

General Specifications

Electrical Specifications

1.4.2 Safety Approvals (Safety standards/EMI)

1.4.3 Acoustic Noise

1.4.4 Durability

1.4.5 Environmental Conditions

1.5 Interface

1.5.1 USB Interfaces

1.5.2 Memory Card Slots

1.6 Control Panel

1.6.1 Operation Buttons & LED

1.7 Specifications of Each Function

1.7.1 Stand-alone Copy Function

1.7.2 Memory Card Direct Print Function

1.7.3 Backup Function

1.7.4 Camera Direct Print Function (USB Direct Print/PictBridge)

1.7.5 Speciality Print Functions

1.7.6 Setup Mode

OPERATING PRINCIPLES

2.1 Overview

2.1.1 Printer Mechanism

2.1.2 Motors and Sensors

2.2 Printer Mechanism Operating Principles

2.2.1 Printhead

2.2.2 Carriage Mechanism

2.2.3 APG Mechanism

2.2.4 Paper Loading/Feeding Mechanism

2.2.5 CD-R Mechanism

2.2.6 Ink System

2.2.7 Scanner Unit

2.3 Electrical Circuits Operating Principles

2.3.1 Features