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Epson 2200 Service Manual - Page 40

Overview, Printer Mechanism, EPSON Stylus PHOTO 2100/2200, Revision B, OPERATING PRINCIPLES - stylus photo printhead

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EPSON Stylus PHOTO 2100/2200 Revision B 2.1 Overview This chapter explains the operating principles of the mechanical sections and electrical circuits in this product. The main components of this product are as follows. ! Control circuit board : C387 MAIN ! Power supply circuit board : C387 PSB/PSE ! Control panel board : C387 PNL 2.2 Printer Mechanism Like the Stylus PHOTO 2000P, this product uses DC motors as power sources. The following table describes the motor types and their applications. Motor Name CR motor PF motor ASF/Pump motor Table 2-1. Various Motors Type Applications/Functions DC motor with brushes Used for carriage driving. Makes little noise during driving. The CR linear scale and CR encoder sensor are used to control the motor. DC motor with brushes Power source to drive the Paper loading rollers at the time of fixed-value paper loading or paper feed/eject operation. To grasp the paper feed pitch, the precision gear surface is fitted with the PF scale and the PF encoder sensor is used to control the motor. 4-phase, 48-pole PM type stepping motor Drives the pump and performs paper feed operation from the ASF. Because of a stepping motor, this motor does not require a scale, photo sensor and like to be fitted to grasp the driving conditions. Though the Stylus PHOTO 2100/2200 is similar in basic structure of the mechanism to the Stylus PHOTO 2000P, it has the following features. • For compatibility with CD-R label direct printing, the CD-R tray adaptor and exclusive sensor are loaded. (Only for Stylus PHOTO 2100) • To feed board paper and roll paper, the exclusive paper feed guide is fitted. • For compatibility with the CD-R tray and correction of ink transfer to the roller, the newly designed paper eject unit is provided. The following shows the outline of the printer mechanism. Loop scale PF roller PF encoder sensor ASF sensor PF motor Cutter adapter Paper eject roller A Paper eject roller B PW sensor ASF sensor wheel LD roller shaft Printhead CR unit CD-R sensor CR shaft B CR encoder sensor LD roller PE sensor CR lock lever ASF/Pump motor Pump unit Cap unit linear scale ASF/Pump switching ring line CR motor Release lever Timing belt CR shaft A Figure 2-1. Printer Mechanism Outline OPERATING PRINCIPLES Overview 40

Section	Page
FRONT MATTER	1
CONTENTS	6
CHAP 1-PRODUCTION DESCRIPTION	8
Overview	9
Basic Specifications	10
Specification Outline Comparison	10
Paper Specification	15
Printing Area	17
Ink Type-based Medium Compatibility Specifications	23
Release Lever	25
Functions	26
Control Panel	26
Switches	26
Indicators	26
Switch Functions	26
Default Setting Selection Function	28
Special Setting Mode Function	29
Status Printing	30
Panel Operation for Roll Paper Printing	31
Panel Operation for CD-R Printing	33
Panel Operation for Thick Paper Printing	33
Panel Operation in Roller Cleaning Mode	34
Indicator Display in Normal Mode	35
Error Status	36
Casing Specifications	37
Accessories	37
Environment Specification Items	38
CHAP 2-OPERATING PRINCIPLES	39
Overview	40
Printer Mechanism	40
Carriage Mechanism	41
Print Mode	44
Paper Feeding Mechanism	48
Paper Loading Mechanism	54
Ink System Mechanism	58
Ink Sequence	60
Paper Cutter Mechanism	63
Power-On Sequence	65
Electrical Circuitry Operating Principles	66
Power Supply Circuit Operating Principle	67
C387MAIN Circuit Operating Principle	68
CHAP 3-TROUBLESHOOTING	69
Overview	70
Error Indications and Fault Occurrence Causes	70
Troubleshooting	78
Superficial Phenomenon-Based Troubleshooting	104
EEPROM Data Analysis	114
CHAP 4-DISASSEMBLY AND ASSEMBLY	115
Overview	116
Precautions	116
Tools to Be Used	117
Screw List	118
Pre-Shipment Checks	119
Disassembly	120
Removing the Housings	121
Removing the Board Assembly	127
Removing the Waste Ink Pads	131
Removing the ASF Unit	132
Removing the Paper Eject Unit	140
Removing the Paper Eject Roller B	144
Removing the Printhead	146
Removing the Carriage Guide Shaft B	149
Removing the Carriage Guide Shaft A and Carriage Unit	152
Removing the Ink System Unit	158
Removing the Release Lever Shaft	159
Removing the Sensors	161
Removing the Motors	168
Removing the DE Unit and ASF/Pump Motor	171
Removing the PF Roller	175
Removing the Paper Eject Roller Shaft A	179
Removing the PF Roller Support	181
Disassembling the Cutter Unit	182
Fitting the Protective Materials	186
CHAP 5-ADJUSTMENT	187
Adjustment Items and Overview	188
Servicing Adjustment Item List	188
Priority of Adjustment Items	193
Replacement Part-Based Adjustment Priorities	194
Required Jigs, Tools and Like	196
Adjustments	197
Servicing Program Usage Outline	197
Head ID Input Function	199
CR motor drive torque dispersion measurement	199
PG Adjustment	200
Head Angular Adjustment	204
CR Tooth Skip Prevention Mechanism Adjustment	206
PF Adjustment	206
PW Sensor Adjustment	207
Bi-D Adjustment	208
Pixel Shift Adjustment	209
Cut Position Adjustment	210
USB ID Input	210
IEEE-1394 ID Input	211
First dot position adjsutment (Left/Right Margin Adjustment)	211
A3+ Photo Quality Ink Jet Paper 2 Print Pattern Printing Function	212
A4 Plain Paper print check pattern	213
CHAP 6-MAINTENANCE	214
Overview	215
ROM Replacement	215
Cleaning	215
Service Maintenance	216
Lubrication	217
CHAP 7-APPENDIX	226
Connector Summary	227
Connectors and Pin Layouts	227
EEPROM Address Map	231
Exploded Diagram	236
Parts List for EPSON Stylus Photo 2100	248

Match case Limit results 1 per page

EPSON Stylus PHOTO 2100/2200

Revision B

OPERATING PRINCIPLES

Overview

2.1

Overview

This chapter explains the operating principles of the mechanical sections and electrical

circuits in this product. The main components of this product are as follows.

Control circuit board

: C387 MAIN

Power supply circuit board

: C387 PSB/PSE

Control panel board

: C387 PNL

2.2

Printer Mechanism

Like the Stylus PHOTO 2000P, this product uses DC motors as power sources. The

following table describes the motor types and their applications.

Though the Stylus PHOTO 2100/2200 is similar in basic structure of the mechanism to

the Stylus PHOTO 2000P, it has the following features.

•

For compatibility with CD-R label direct printing, the CD-R tray adaptor and

exclusive sensor are loaded. (Only for Stylus PHOTO 2100)

•

To feed board paper and roll paper, the exclusive paper feed guide is fitted.

•

For compatibility with the CD-R tray and correction of ink transfer to the roller, the

newly designed paper eject unit is provided.

The following shows the outline of the printer mechanism.

Figure 2-1. Printer Mechanism Outline

Table 2-1. Various Motors

Motor Name

Type

Applications/Functions

CR motor

DC motor with

brushes

Used for carriage driving. Makes little noise during

driving. The CR linear scale and CR encoder sensor

are used to control the motor.

PF motor

DC motor with

brushes

Power source to drive the Paper loading rollers at the

time of fixed-value paper loading or paper feed/eject

operation. To grasp the paper feed pitch, the

precision gear surface is fitted with the PF scale and

the PF encoder sensor is used to control the motor.

ASF/Pump motor

4-phase, 48-pole

PM type

stepping motor

Drives the pump and performs paper feed operation

from the ASF. Because of a stepping motor, this

motor does not require a scale, photo sensor and like

to be fitted to grasp the driving conditions.

Loop scale

PF encoder sensor

PF motor

Cutter adapter

Paper eject roller A

Paper eject roller B

Printhead

CR unit

CD-R sensor

CR shaft B

CR lock lever

Pump unit

ASF sensor

wheel

LD roller shaft

CR encoder

sensor

LD roller

PE sensor

ASF/Pump

motor

ASF/Pump

switching ring line

CR motor

Release lever

linear

scale

CR shaft A

Cap unit

PF roller

Timing belt

PW sensor