Epson | Stylus Color 660 | Service manual | Epson Stylus Color 660 Service manual

SERVICE MANUAL
Color Inkjet Printer
EPSON EPSON Stylus COLOR 670
®
SEIJ99016
Notice
o All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means
electronic, mechanical, photocopying, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.
o All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON
would greatly appreciate being informed of them.
o The contents of this manual are subject to change without notice.
o All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON
would greatly appreciate being informed of them.
o The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the
consequences thereof.
EPSON is a registered trademark of SEIKO EPSON CORPORATION.
General Notice:
Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their
respective owners. EPSON disclaims any and all rights in those marks.
Copyright © 2000 SEIKO EPSON CORPORATION. Printed in Japan.
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.
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 SECONDSOURCE ICs OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.
About This Manual
This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of EPSON EPSON Stylus
COLOR 670. 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.
Contents
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
Provides the step-by-step procedures for the troubleshooting.
CHAPTER 4. DISASSEMBLY AND ASSEMBLY
Describes the step-by-step procedures for disassembling and assembling the product.
CHAPTER 5. ADJUSTMENTS
Provides Epson-approved methods for adjustment.
CHAPTER 6. MAINTENANCE
Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives
required for servicing the product.
APPENDIX
Provides the following additional information for reference:
• Connector pin assignments
• Electric circuit boards components layout
• Exploded diagram
• 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 WARNING, CAUTION or NOTE messages.
W A R N IN G
Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in injury or loss of life.
C A U T IO N
Indicates an operating or maintenance procedure, practice, or condition that, if not strictly observed, could result in damage to, or destruction
of, equipment.
C H E C K
P O IN T
May indicate an operating or maintenance procedure, practice or condition that is necessary to accomplish a task efficiently. It may also
provide additional information that is related to a specific subject, or comment on the results achieved through a previous action.
Revision Status
Revision
Rev. A
Issued Date
January 27, 2000
Description
First Release
EPSON Stylus COLOR 670
Revision A
Contents
Product Description
Overview ..................................................................................................... 11
Features ................................................................................................. 11
Basic Specifications .................................................................................. 12
Printing Specifications ............................................................................ 12
Printing Method ...............................................................................12
Nozzle configuration ........................................................................12
Printing Direction .............................................................................12
printing speed and printable columns ..............................................12
Control Code ...................................................................................12
Character Tables .............................................................................12
TypeFace .........................................................................................12
Paper Feeding ........................................................................................ 12
Input data buffer ..................................................................................... 12
Electric Specification .............................................................................. 13
Environmental Conditions ...................................................................... 13
Temperature ....................................................................................13
Humidity ...........................................................................................13
Resistance to shock ........................................................................14
Resistance to vibration ....................................................................14
Reliability ................................................................................................ 14
Safety Approvals .................................................................................... 14
Acoustic noise ........................................................................................ 14
Interface ...................................................................................................... 15
Hardware interface ................................................................................. 15
Parallel interface ................................................................................. 15
IEEE-1284 Parallel I/F (Reverse Channel) ............................................. 17
USB (Universal Serious Bus) ................................................................. 19
Miscellanea ............................................................................................ 20
Receive Data Buffer Full Operation .................................................... 20
Interface Selection .............................................................................. 20
Automatic selection .........................................................................20
Interface state and interface selection .............................................20
IEEE 1284.4 protocol ......................................................................... 20
Printer Language and Emulation ............................................................ 21
Control codes ..................................................................................... 21
Character mode ...............................................................................21
Graphics mode ................................................................................21
Operator Controls ..................................................................................... 22
Operate Switch ....................................................................................... 22
Control Panel ......................................................................................... 22
Switches ............................................................................................. 22
Indicators ................................................................................................ 22
Panel Functions ..................................................................................... 22
Printer Condition and Panel Status ........................................................ 23
Printer Initialization ................................................................................. 23
Errors ..................................................................................................... 24
Paper Handling ...................................................................................... 24
Paper Specification ................................................................................ 24
Printable Area ........................................................................................ 26
Cut Sheet ........................................................................................... 26
Envelope ............................................................................................ 27
Ink Cartridge ........................................................................................... 28
Black Ink Cartridge ..........................................................................28
Color Ink Cartridge ..........................................................................28
Physical Specification .............................................................................. 29
Accessories ............................................................................................... 29
7
EPSON Stylus COLOR 670
Revision A
Operating Principles
Disassembly and Assembly
Overview ..................................................................................................... 31
Printer Mechanism ................................................................................. 31
Printhead ................................................................................................ 33
Printing Process ................................................................................. 34
Printing Method .................................................................................. 35
Carriage Mechanism .............................................................................. 36
Platen Gap (PG) Adjustment Mechanism ........................................... 36
Paper Feeding Mechanism .................................................................... 37
Paper Loading Mechanism (ASF Unit) ................................................... 38
Ink System Mechanism .......................................................................... 40
Pump Unit and CR Lock Mechanism .................................................. 40
Capping Mechanism ............................................................................... 41
Ink Sequence ......................................................................................... 42
Overview ....................................................................................................
Precautions ............................................................................................
Tools ......................................................................................................
Work Completion Check ........................................................................
67
68
69
70
Disassembly ..............................................................................................
Housing Removal ...................................................................................
Circuit Board Assembly Removal ...........................................................
Control Panel Removal ..........................................................................
Ink Absorber Tray Assembly (Waste Ink Pad) Removal ........................
Printer Mechanism Disassembly ............................................................
Printhead Removal .............................................................................
Pump Assembly / Cap Assembly Removal ........................................
CR Motor Assembly Removal ............................................................
PF Motor Assembly Removal .............................................................
ASF Assembly Removal .....................................................................
ASF LD Roller Assembly Removal .....................................................
LD Roller Assembly Disassembly ......................................................
CR Assembly Removal ......................................................................
PE Sensor Assembly Removal ..........................................................
PF Roller Assembly Removal .............................................................
CR HP Sensor Removal .....................................................................
71
72
73
75
76
77
77
80
82
83
85
87
92
93
95
96
98
Electrical Circuit Operating Principles .................................................... 43
C301PSB/PSE Board ............................................................................. 43
C301MAIN Board ................................................................................... 45
Main elements .................................................................................... 46
Printhead Driver Circuit ...................................................................... 47
PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit ............................... 48
CR Motor Driver Circuit ...................................................................... 49
Reset Circuit ....................................................................................... 49
EEPROM Control Circuit .................................................................... 50
Sensor Circuit ..................................................................................... 51
Troubleshooting
Overview ..................................................................................................... 53
Unit Level Troubleshooting ...................................................................... 54
Printer does not operate at power on ..................................................... 55
Error is detected ..................................................................................... 55
Failure occurs during printing ................................................................. 56
Printer does not feed paper correctly ..................................................... 56
Control panel operation is abnormal ...................................................... 57
Unit Repair (Power Supply Board) ........................................................... 57
Unit Repair (Control Board) ...................................................................... 58
Unit Repair (Printer Mechanism) .............................................................. 61
8
EPSON Stylus COLOR 670
Revision A
Adjustment
Maintenance
Overview ................................................................................................... 100
Required Adjustments .......................................................................... 100
Overview ..................................................................................................
Cleaning ...............................................................................................
Service Maintenance ............................................................................
Lubrication ............................................................................................
Adjustment ............................................................................................... 101
PG Adjustment ..................................................................................... 101
Using the Adjustment Program .............................................................. 103
Adjustment Program Installation Procedure ......................................... 103
Adjustment Program ............................................................................. 103
Adjustment Program Initial Setting Screen ........................................... 104
Check This Model Name ...................................................................... 106
Head ID Input ....................................................................................... 107
Head Angular Adjustment .................................................................... 109
Bi-D Adjustment ................................................................................... 112
USB ID Input ........................................................................................ 115
To Only Check the USB ID ............................................................116
Head Cleaning ...................................................................................... 117
Initial Ink Charge .................................................................................. 118
Protection Counter Indication / Reset ................................................... 119
Print A4 Check Pattern ......................................................................... 121
123
123
124
125
Appendix
Connector Summary ............................................................................... 130
Major Component Unit ......................................................................... 130
EEPROM Address Map ....................................................................... 133
Component Layout .................................................................................. 137
Exploded Diagram ................................................................................... 139
Parts List .................................................................................................. 143
Electric Circuit Diagrams ........................................................................ 148
9
CHAPTER
1
PRODUCT DESCRIPTION
EPSON Stylus Color 670
Revision A
1.1 Overview
The EPSON Stylus COLOR 670 is a color ink jet printer based on the
EPSON Stylus COLOR 660.
1.1.1 Features
Major features of EPSON Stylus COLOR 670 are as follows;
o High color print quality
n 1440x720 (HxV) dpi printing
n 4 color printing (YMCK)
n Traditional and New Microweave
o Built-in auto sheet feeder
n Holds 100 cut-sheets (64g/m2)
n Holds 10 envelopes
n Holds 30 transparency film sheets
o Two built-in interfaces
Figure 1-1. External View
n Bi-directional parallel I/F (IEEE-1284 level 1 device)
n USB (Universal Serial Bus)
o Windows/Macintosh exclusive
o ROM version: YUXXXX
Product Description
Overview
11
EPSON Stylus Color 670
Revision A
1.2 Basic Specifications
CONTROL CODE
o ESC/P Raster command
1.2.1 Printing Specifications
o EPSON Remote command
PRINTING METHOD
CHARACTER TABLES
o On demand ink jet
o 2 international character sets
NOZZLE CONFIGURATION
n PC437 (US, Standard Europe)
o Black:
monochrome 64 nozzles (32 x 2 rows staggered)
n PC850 (Multilingual)
o Color:
32 nozzles per color row x 3 colors
(Cyan, Magenta, Yellow)
TYPEFACE
o Bit map LQ font
PRINTING DIRECTION
o EPSON Courier 10 cpi
o Bi-direction with logic seeking
1.2.2 Paper Feeding
PRINTING SPEED AND PRINTABLE COLUMNS
o Feeding method: Friction feed with ASF
Table 1-1. Character Mode
Character pitch
Printable columns
LQ speed
10 cpi
80
200 CPS**
* This is not open to the user.
** This value is the speed of normal-dot printing.
o Paper path:
Cut-sheet ASF (Top entry/Front exit)
o Feed speed:
8.47mm (1/3inch) feed:190ms
Continuous feed:
51mm/s
1.2.3 Input data buffer
o Input data buffer: 32KB
Table 1-2. Printing Speed (Raster Graphics Mode)
Horizontal
Resolution
Printable Area
Available Dot
CR Speed
180 dpi
209.8mm (8.26 inch)
1488
508mm/s (20 IPS)
360 dpi
209.8mm (8.26 inch)
2976
508mm/s (20 IPS)
720 dpi
209.8mm (8.26 inch)
5952
508mm/s (20 IPS)
Product Description
Basic Specifications
12
EPSON Stylus Color 670
Revision A
1.2.5 Environmental Conditions
1.2.4 Electric Specification
o 120 V Version
TEMPERATURE
n Rated voltage:
AC 100V
n Input voltage range:
AC 99 -132V
n Rated frequency range:
50 - 60Hz
n Input frequency range:
49.5-60.5 Hz
n Rated current:
0.4A
n Power consumption:
Approx.18W(ISO 10561 Letter pattern
Approx. 2.5W in standby mode
Energy Star compliant
o Operating:
10 to 35° C (see Figure 1-2, "Environmental
Condition")
o Non-operating:
-20 to 60° C (With shipment container)
(within 120 hours at 60° C / within 1 month at 40° C)
n Insulation Resistance:
10 M ohms min.
(between AC line and chassis, DC 500V)
n Dielectric:
AC 1000 V rms. 1 minute or
AC 1200 V rms 1 second
(between AC line and chassis)
HUMIDITY
o Operating:
20 to 80% RH (without condensation)
o Non-operating:
5 to 85% RH (without condensation)
(With shipment container)
The environmental condition should be within the range shown in the
figure below.
(%)
o 220-240 V Version
80
n Rated voltage:
AC 220 - 240V
n Input voltage range:
AC 198 - 264V
n Rated frequency range:
50 - 60Hz
n Input frequency range:
49.5-60.5 Hz
n Rated current:
0.2A
n Power consumption:
Approx.18W(ISO 10561 Letter pattern
Approx. 2.5W in standby mode
Energy Star compliant
n Insulation Resistance:
10 M ohms min.
(between AC line and chassis, DC 500V)
n Dielectric:
AC 1500 V rms. 1 minute
(between AC line and chassis)
55
20
10
27
35
(”C)
tmphumid
Figure 1-2. Environmental Condition
Product Description
Basic Specifications
13
EPSON Stylus Color 670
Revision A
RESISTANCE TO SHOCK
1.2.8 Acoustic noise
o Operating:
1 G, within 1ms (operating)
o Level:
o Non-operating:
2 G, within 2 ms (with shipment container)
RESISTANCE TO VIBRATION
o Operating:
0.15 G
o Non-operating:
0.50 G (with shipment container)
1.2.6 Reliability
o Total print volume:
25,000 pages (A4, Letter)
o Printhead Life:
3 billion dots / nozzle
Approx. 47 dB (A)
(According to ISO 7779)
o CE marking
220 - 240 V version
Low voltage directive 73/23/EEC: EN60950
EMC Directive 89/336/EEC:
EN55022 class B
EN61000-3-2
EN61000-3-3
EN50082-1
IEC801-2
IEC801-3
IEC801-4
1.2.7 Safety Approvals
o 120V version:
Safety standards: UL 1950
CSA22.2 subpart B class B
CSA C 108.8 class B
o 220 - 240V version:
Safety standards: EN 60950 (VDE)
EMI:
EN 55022 (CISPR Pub. 22) class B
AS/NZS 3548 class B
Product Description
Basic Specifications
14
EPSON Stylus Color 670
Revision A
1.3 Interface
The figure below shows the timing chart of the parallel interface.
DATA
Data byte n
1.3.1 Hardware interface
thold
This printer provides USB and parallel interface as standard.
/STROBE
tsetup
1.3.1.1 Parallel interface
o Transmission mode:
mode
tbusy
tready
By STROBE pulse
o Handshaking:
By BUSY and ACKNLG signal
o Signal level:
TTL compatible level
o Adaptable connector:
57-30360 (amphenol) or equivalent
tnext
tstb
BUSY
8-bit parallel, IEEE-1284 compatibility
o Synchronization mode:
Data byte n+1
/ACKNLG
treply
tack
tnbusy
timechart
Figure 1-3. Data Transmission Timing Chart
On the above timing chart, Tact rated period is shown below.
BUSY signal is set high before setting either -ERROR low or PE high and
held high until all these signals return to their inactive state.
BUSY signal is at high level in the following cases.
-During data entry (see Figure 1-3, "Data Transmission Timing Chart")
-When input data buffer is full.
-When -INIT signal is at low level or during hardware initialization
-During printer error (see the ERROR signal explanation below)
-When the parallel interface is not selected
Table 1-3. tact Rated Period
Parallel I/F Mode
Tact Rated Period
High speed (default)
1µs
Normal speed
3µs
ERROR signal is at low level when the printer is in one of the following
states.
-Printer hardware error (fatal error)
-Paper-out error
-Paper-jam error
-Ink-out error
PE signal is at high level during paper-out error.
Product Description
Interface
15
EPSON Stylus Color 670
Revision A
Table 1-4. Signal Level: TTL compatible (IEEE-1284 level 1 device)
Parameter
Minimum
Maximum
VOH*
-
5.5V
VOL*
-0.5V
-
IOH*
-
0.32mA
VOH=2.4V
IOL*
-
12mA
VOL=0.4V
CO
-
50pH
VIH
-
2.0V
VIL
0.8V
-
IIH
-
0.32mA
VIH=2.0V
IIL
-
12mA
VIH=0.8V
CI
-
50 pF
Table 1-5. Connector Pin Assignment and Signals (F-Channel)
Condition
NOTE: * A low logic level on the Logic H signal is 2.0 V or less when
the printer is powered off and this signal is equal or exceeding
3.0V when the printer is powered on. The receiver shall
provide an impedance equivalent to 7.5 K ohm to ground.
Pin
No.
Signal
Name
Return
GND Pin
In/Out
3
DATA1
21
In
4
DATA2
22
In
5
DATA3
23
In
6
DATA4
24
In
7
DATA5
25
In
8
DATA6
26
In
9
DATA7
27
In
10
-ACKNLG
28
Out
This signal is a negative pulse
indicating that the printer can again
accept data.
11
BUSY
29
Out
A high signal indicated that the printer
cannot receive data.
12
PE
28
Out
A high signal indicates paper-out
error.
13
SLCT
28
Out
Always at high level when the printer
is powered on.
14
-AFXT
30
In
Not used.
The falling edge of a negative pulse or
a low signal on this line causes the
printer to initialize. Minimum 50 us
pulse is necessary.
Table 1-5. Connector Pin Assignment and Signals (F-Channel)
Pin
No.
1
2
Signal
Name
Return
GND Pin
-STROBE
DATA0
Product Description
19
20
In/Out
Function Description
Function Description
31
-INIT
30
In
In
The strobe pulse. Read-in of data is
performed at the falling edge of this
pulse.
32
-ERROR
29
Out
In
The DATA0 through DATA7 signals
represent data bits 0 to 7, respectively.
Each signal is at high level hen data is
logical 1 and low level when data is
logical 0.
36
-SLIN
30
In
18
Logic H
-
Out
Pulled up to +5V via 3.9K ohm resistor.
35
+5V
-
Out
Pulled up to +5V via 3.3K ohm resistor.
Interface
A low signal indicates printer error
condition.
Not used.
16
EPSON Stylus Color 670
Revision A
Table 1-5. Connector Pin Assignment and Signals (F-Channel)
1.3.2 IEEE-1284 Parallel I/F (Reverse Channel)
Pin
No.
Signal
Name
Return
GND Pin
In/Out
Reverse channel is used to transfer the information data from the printer
side to the PC side.
17
Chassis
GND
-
-
Chassis GND.
16, 33
19-30
GND
-
-
Signal GND.
15, 34
NC
-
-
Not connected.
Function Description
NOTE: * In/Out refers to the direction of signal flow from the printer’s
point of view.
Table 1-6. Parallel I/F Specification (R-Channel)
Item
Specification
Transmission mode
IEEE-1284 nibble mode
Synchronization
Comply with the IEEE-1284 specification
Handshaking
Comply with the IEEE-1284 specification
Data trans. timing
Comply with the IEEE-1284 specification
Signal Level
TTL level (IEEE-1284-Level 1 device)
o Device ID
n When IEEE-1284.4 protocol is enabled:
[00H] [5AH]
MFG: EPSON;
CMD: ESCPL2, BDC, D4;
MDL: Stylus[SP]COLOR[SP]670;
CLS: PRINTER;
DES: EPSON[SP]Stylus[SP]COLOR[SP]670;
n When IEEE1284.4 protocol is NOT enabled:
[00H] [57H]
MFG: EPSON;
CMD: ESCPL2, BDC;
MDL: Stylus[SP]COLOR[SP]670;
CLS: PRINTER;
DES: EPSON[SP]Stylus[SP]COLOR[SP]670;
NOTE: [00H] denotes a hexadecimal value of zero.
MDL value depends on the EEPROM setting.
CMD value depends on the IEEE1284.4 setting.
Product Description
Interface
17
EPSON Stylus Color 670
Revision A
Table 1-7. Connector Pin Assignment and Signals (F-Channel)
Pin
No.
Signal Name
Return
GND Pin
In/Out
1
HostClk
19
In
Host clock signal.
2
DATA0
20
In
3
DATA1
20
In
4
DATA2
20
In
5
DATA3
20
In
6
DATA4
20
In
7
DATA5
20
In
The DATA 0 through DATA7
signals represent data bits 0-7
respectively.
Each signal is at high level when
data is logical 1 and low level
when data is logical 0.
These signals are used to transfer
the 1284 extensibility request to
the printer.
8
DATA6
20
In
9
DATA7
20
In
10
PtrClk
28
Out
Printer clock signal.
11
PtrBusy/
DataBit-3,7
29
Out
Printer busy signal and reverse
channel transfer data bit 3 or 7.
12
AckDataReq/
DataBit-2,6
28
Out
Acknowledge data request signal
and reverse channel transfer data
bit 2 or 6.
13
Xflag/
DataBit-1,5
28
Out
X-flag signal and reverse channel
transfer data bit 1 or 5.
14
HostBusy
30
In
Host busy signal.
31
-INIT
30
In
Not used.
32
-DataAvail/
DataBit-0,4
29
Out
36
1284-Active
30
In
18
Logic H
-
Out
Pulled up to +5V via 3.9K ohm
resistor.
35
+5V
-
Out
Pulled up to +5V via 3.3 K ohm
resistor.
Product Description
Table 1-7. Connector Pin Assignment and Signals (F-Channel)
Pin
No.
Signal Name
Return
GND Pin
In/Out
17
Chassis
-
-
Printer chassis GND.
16, 33
19-30
GND
-
-
Twist pair return GND.
15, 34
NC
-
-
Not used.
Functional Description
Functional Description
NOTE: * In/Out refers to the direction of signal flow from the printer’s
point of view.
Data available signal and reverse
channel transfer data bit 0 or 4.
1284 active signal
Interface
18
EPSON Stylus Color 670
Revision A
1.3.3 USB (Universal Serious Bus)
Pin #2
Pin #1
Pin #3
Pin #4
Following shows specification.
o Standard:
n Universal Serial Bus Specifications Revision 1.0
n Universal Serial Bus Device Class Definition for Printing Devices
version 1.0
o Bit rate:
12Mbps (Full Speed Device)
o Data encoding:
NRZI
o Adaptable connector:
USB Series B
o Recommended cable length: max. 2 meters
Table 1-8. Connector Pin Assignment and Signals
usb
Pin.
No
Signal Name
I/Out
1
VCC
--
2
-Data
I/O
Data
3
+Data
I/O
Data. Pull up to +3.3V via 1.5K ohm
resistor.
4
Ground
--
Product Description
Function Description
Figure 1-4. USB Interface Port
Cable power. Maximum power
consumption is 100mA.
Cable ground.
Interface
19
EPSON Stylus Color 670
Revision A
1.3.4.3 IEEE 1284.4 protocol
1.3.4 Miscellanea
1.3.4.1 Receive Data Buffer Full Operation
Generally, hosts abandon data transfer to peripherals when a peripheral
is in the busy state for dozens of seconds continuously. To prevent hosts
from this kind of time-out, the printer receives data very slowly, several
bytes per minute, even if the printer is in busy state. This slowdown is
started when the rest of the input buffer becomes several hundreds of
bytes. Finally, the printer is in the busy state continuously when the input
buffer is full. USB and IEEE-1284.4 on the parallel interface do not require
this function.
The packet protocol described by IEEE1284. 4 standard allows a device to
carry on multiple exchanges or conversations which contain data and / or
control information with another device at the same time across a single
point-to-point link. The protocol is not, however, a device control
language. It does provide basic transport-level flow control and
multiplexing services. The multiplexed logical channels are independent
of each other and blocking of one has no effect on the others. The
protocol operates over IEEE 1284.
o Automatic selection
An initial state is compatible interface and starts IEEE12844
communication when magic strings (1284.4 synchronous commands)
are received.
1.3.4.2 Interface Selection
The printer has 2 built-in interfaces; the USB and parallel interface. These
interfaces are selected automatically.
o On
An initial state is IEEE1284.4 communication and data that received it
by the time it is able to take synchronization by magic string (1284.4
synchronous commands) is discarded.
AUTOMATIC SELECTION
In this automatic interface selection mode, when the printer is initialized
to the idle state scanning which interface receives data when it is
powered on. Then the interface that receives data first is selected. When
the host stops data transfer and the printer is in the stand-by state for the
seconds, the printer is returned to the idle state. As long as the host sends
data or the printer interface is in the busy state, the selected interface is
let as it is.
o Off
An initial state is compatible interface and never starts IEEE1284.
communication even if magic strings (1284.4 synchronous
commands) are received.
INTERFACE STATE AND INTERFACE SELECTION
When the parallel interface is not selected, the interface got into the busy
state. When the printer is initialized or returned to the idle state, the
parallel interface got into the ready state. Caution that the interrupt signal
such as the -INIT signal on the parallel interface is not effective while that
interface is not selected.
Product Description
Interface
20
EPSON Stylus Color 670
Revision A
1.3.5 Printer Language and Emulation
o Printing mode:
Printing mode
ESC(K
o Printer language:
o Color:
Printing color
ESC r, ESC(r
ESC/P Raster
EPSON Remote
1.3.5.1 Control codes
CHARACTER MODE
o General Operation:
Initialize Printer
ESC@
o Paper feeding:
Form Feed
Line Feed
Carriage Return
FF
LF
CR
o EEPROM control:
EEPROM control
ESC|
o General operation:
Initialize Printer
Unidirectional Printing
CSF Mode Control
ESC@
ESC U
ESC EM
o Paper feeding:
Form Feed
Line Feed
Line Spacing
Carriage Return
FF
LF
ESC+
CR
o Page format:
Page Length
Top / Bottom Margin
Paper side
ESC(C
ESC(c
ESC8S
GRAPHICS MODE
o Print position motion: Horizontal Print Position
Vertical Print Position
ESC$, ESC\, ESC($,
ESC(
ESC(V, ESC(v
o Spacing:
Define Unit
ESC(U
o Graphics:
Graphics Mode
Raster Graphics
Microweave control
Dot size control
Print a image
ESC(G
ESC., ESC(D, ESC i
ESC(i
ESC(e
ESC ACK
Product Description
Interface
21
EPSON Stylus Color 670
Revision A
1.4 Operator Controls
1.4.4 Panel Functions
Table 1-9. Panel Functions
1.4.1 Operate Switch
Switch
Operate switch is located on the control panel.
Function
• Loads or Ejects the paper.
Load / Eject
• When the carriage is on the ink cartridge change
(Pushing within 2 seconds*)
position, return carriage from ink cartridge
change position.
1.4.2 Control Panel
1.4.2.1 Switches
There are 2 non-lock type push switches, 1 lock type push switch and 4
LED.
1.4.3 Indicators
Load / Eject
(Pushing for 2 seconds*)
• Starts the ink cartridge change sequence.**
Moves the carriage to the cartridge change
position.
Cleaning
(Pushing for 2 seconds*)
• Starts the cleaning of head.
• In the condition of “Ink Low” or “Ink Out” or
“No Ink Cartridge”, starts the Ink Cartridge
change sequence.**
Cleaning
(Pushing within 2 seconds*)
• When carriage is on the Ink Cartridge change
position, return carriage from Ink cartridge
change position.
o Power
Lit when the operate switch is ON, and AC power is supplied.
o Paper Out
Lit during the paper-out condition and blinks during the paper-jam
condition.
o Ink Out (Black)
NOTE: * Described as 3 seconds required in the User’s guide.
** This function is not available in printing status.
Lit during no Black ink condition, and blinks during the Black ink low
condition.
Table 1-10. Panel Functions with Power On
Switch
o Ink Out (Color)
Load / Eject
Lit during no Color ink condition, and blinks during the Color ink low
condition.
Cleaning
Cleaning
+
Load / Eject
Pressing with Power on Function
• Starts status sheet printing.
• Change code pages / Select IEEE 1284.4 mode
for parallel I/F. *1
• Enters the special settings mode. (Factory use
only.)
NOTE: *1 Not described in the User’s manual.
Product Description
Operator Controls
22
EPSON Stylus Color 670
Revision A
1.4.6 Printer Initialization
Table 1-11. Special Setting Mode
Switch
Load / Eject
Cleaning
(Pushing for 10 seconds*)
There are three kinds of initialization method.
Function
o Power-on initialization
• Initialize EEPROM and reset timer IC.
This printer is initialized when turning the printer power on, or printer
recognized the cold-reset command (remote RS command).
When the printer is initialized following action is performed.
• Reset the ink overflow counter in EEPROM
n Initializes printer mechanism.
1.4.5 Printer Condition and Panel Status
n Clears input data buffer.
Table 1-12. Printer Condition & Indicator Status
n Clears print buffer.
Indicators
Printer Status
Ink Out
(Color)
Paper
Out
Priority
Power
Ink Out
(Black)
On
--
--
--
9
Ink sequence
Blink
--
--
--
6
Ink Cartridge change mode
Blink
--
--
--
5
Data processing
Blink
--
--
--
8
Paper Out
--
--
--
On
4
Paper jam condition
--
Off
Off
Blink
3
No ink cartridge or ink end (black)
--
On
--
--
7
Ink level low (black)
--
Blink
--
--
7
No ink cartridge or ink end (color)
--
--
On
--
7
Ink level low (color)
--
--
Blink
--
7
Enter EEPROM and Timer IC reset
--
On
(only for 1 second)
Power on condition
o Operator initialization
-
Maintenance request
Blink
Blink
Blink
Blink
2
Fatal error
Blink
On
On
Blink
1
Product Description
n Sets default values.
This printer is initialized when turning the printer power on again
within 10 seconds from last power off, or printer recognized the -INIT
signal (native pulse) of parallel interface.
When printer is initialized, following action is performed.
n Cap the printhead.
n Eject a paper.
n Clears input data buffer.
n Clears print buffer.
n Sets default values.
o Software initialization
The ESC@ command also initializes the printer.
When printer is initialized, following action is performed.
n Clears print buffer.
n Sets default values.
Operator Controls
23
EPSON Stylus Color 670
Revision A
1.4.7 Errors
1.4.8 Paper Handling
o Ink End
Do not perform reverse feed more than 9.5mm (0.38”).
When the printer runs out the most parts of the ink of any one color, it
warns ink-low and keeps printing. When the printer runs out the
whole ink of any one color, it stops printing and indicates ink-out
error. User is requested to install a new ink-cartridge in this state. A
ink-cartridge once taken out should never be used again. Reinstallation of the cartridge not filled fully upsets the ink level
detection and may cause a serious problem in the printhead as a
result.
1.4.9 Paper Specification
o Cut Sheet
n Size:
A4 (210 x 297 mm)(8.3 x 11.7”)
Letter (216 x 279 mm)(8.5 x 11.0”)
B5 (182 x 257 mm)(7.2 x 10.1”)
Legal (216 x 356 mm)(8.5 x 14.0”)
Statement (139.7 x 215.9mm)(5.5 x 8.5”)
Executive (184.2 x 266.7 mm)(7.25 x 10.5”)
A5 (148 x 210 mm)
A6 (105 x 148 mm)
o Paper Out
When the printer fails to load a sheet, it goes paper out error.
o Paper Jam
When the printer fails to eject a sheet, it goes paper jam error.
o No Ink Cartridge
When the printer detects ink-cartridge is not installed or off, it goes
this error mode.
o Maintenance request
Carriage control error or CG access error.
0.08mm to 0.11mm(0.003 to 0.004”)
n Weight:
When the total quantity of ink wasted through the cleaning and
flushing is reaches to the limit, printer indicates this error and stops.
The absorber in the printer enclosure is needed to be replaced with a
new one by a service person.
o Fatal Errors
n Thickness:
64g/m2 to 90g/m2 (17lb to 24lb / 55 to 78 kg)
n Paper quality:
exclusive paper, bond paper, PPC
o Transparency, Glossy paper
n Size:
A4 (210 x 297 mm)(8.3 x 11.7”)
Letter (216 x 279 mm)(216 x 279 mm)(8.5 x 11.0”)
n Thickness:
0.075mm to 0.085mm(0.003 to 0.0033”)
NOTE: Transparency printing is only available at normal
temperature.
Product Description
Operator Controls
24
EPSON Stylus Color 670
Revision A
o Envelope
n Size:
No.10 (241.3 mm x 104.8 mm)(9.5 x 4.125”)
DL (220 mm x 110 mm)(8.7 x 4.3”)
C6 (162 mm x 114 mm)(6.4 x 4.5”)
Paper Type/Weight/Flap
n Thickness:
0.16mm to 0.52mm(0.006 to 0.02”)
n Weight:
45g/m2 to 75g/m2 (12lb to 20lb)
n Paper quality:
bond paper, plain paper, air mail
NOTE: *Envelope printing is only available at normal temperature.
*Keeping the longer side of the envelope horizontally at
setting.
o Index card
n Size:
A6 (105 x 148 mm)(4.1 x 5.8”)
A5 (148 x 210 mm)(5.8 x 8.3”)
5x8” index card (127 x 203mm)
10x8” index card (154 x 203mm)
n Thickness:
Less than 0.23mm (0.0091”)
Product Description
Operator Controls
25
EPSON Stylus Color 670
Revision A
1.4.10 Printable Area
Table 1-13. Margins in Character Mode
1.4.10.1 Cut Sheet
PW
LM
Paper Size
Left Margin
Right Margin
Top Margin
Bottom Margin
A4
3mm (0.12”)
3mm (0.12”)
3mm (0.12”)
14mm (0.54”)
Letter
3mm (0.12”)
9mm (0.35”)
3mm (0.12”)
14mm (0.54”)
B5
3mm (0.12”)
3mm (0.12”)
3mm (0.12”)
14mm (0.54”)
Legal
3mm (0.12”)
9mm (0.35”)
3mm (0.12”)
14mm (0.54”)
Statement
3mm (0.12”)
3mm (0.12”)
3mm (0.12”)
14mm (0.54”)
Executive
3mm (0.12”)
3mm (0.12”)
3mm (0.12”)
14mm (0.54”)
RM
TM
Table 1-14. Margins in Raster Graphics Mode
Printable Area
PL
BM
Paper
Size
Left Margin
Right Margin
Top Margin
A4
3mm (0.12”)
3mm (0.12”)
3mm (0.12”) 14 or 3mm (0.54 or 0.12”)
Letter
3mm (0.12”)
3mm (0.12”)
3mm (0.12”) 14 or 3mm (0.54 or 0.12”)
B5
3mm (0.12”)
3mm (0.12”)
3mm (0.12”) 14 or 3mm (0.54 or 0.12”)
Legal
3mm (0.12”)
3mm (0.12”)
3mm (0.12”) 14 or 3mm (0.54 or 0.12”)
Statement 3mm (0.12”)
3mm (0.12”)
3mm (0.12”) 14 or 3mm (0.54 or 0.12”)
Executive
3mm (0.12”)
3mm (0.12”) 14 or 3mm (0.54 or 0.12”)
3mm (0.12”)
Bottom Margin
NOTE: * Bottom margin is expanded to 3mm when paper dimension
is defined by using command, otherwise it is not expanded
(14mm).
**From a form lower end 3mm as for 14mm area, a printing
may scramble.
Figure 1-5. Printable Area for Cut Sheet
Product Description
Operator Controls
26
EPSON Stylus Color 670
Revision A
1.4.10.2 Envelope
LM
RM
TM
Printable
Printable Area
Area
BM
Figure 1-6. Printable Area for Envelopes
Table 1-15. Envelope Margin
Size
Left Margin
(minimum)
Right Margin
(minimum)
Top Margin
(minimum)
Bottom Margin
(minimum)
#10
3 mm (0.12”)
28 mm (1.10”)
3 mm (0.12”)
14 mm (0.55”)
DL
3 mm (0.12”)
7 mm (0.28”)
3 mm (0.12”)
14 mm (0.55”)
C6
3 mm (0.12”)
3 mm (0.12”)
3 mm (0.12”)
14 mm (0.55”)
Product Description
Operator Controls
27
EPSON Stylus Color 670
Revision A
1.4.11 Ink Cartridge
COLOR INK CARTRIDGE
BLACK INK CARTRIDGE
o Type:
Exclusive cartridge
o Color:
Magenta, Cyan, Yellow
o Type:
Exclusive cartridge
o Color:
Black
o Print capacity: 300 pages/A4 (360 dpi, 5% duty each color)
o Print capacity: 540 pages / A4 (ISO/IEC10561 Letter pattern at 360 dpi)
o Ink life:
2 years from production date
o Storage temperature:
n -20° C to 40° C
Storage, within a month at 40° C
n -30° C to 40° C
Packing storage, within a month at 40° C
n -30° C to 60° C
Transit, within a month at 60° C
o Dimension:
o Ink life:
2 years from production date
o Storage temperature:
n -20° C to 40° C
Storage, within a month at 40° C
n -30° C to 40° C
Packing storage, within a month at 40° C
n -30° C to 60° C
Transit, within a month at 60° C
o Dimension:
42.9mm (W) x 52.7 mm (D) x 38.5mm (H)
19.8mm (W) x 52.7 mm (D) x 38.5mm (H)
Figure 1-8. Color Ink Cartridge
Figure 1-7. Black Ink Cartridge
Product Description
NOTE: Ink cartridges cannot be refilled, properly dispose of after use.
Do not use the ink cartridge which is beyond its production
date plus two years. Ink will be frozen under -4° C environment,
however it will be usable after placing it more than 3 hours at
room temperature.
Operator Controls
28
EPSON Stylus Color 670
Revision A
1.5 Physical Specification
1.6 Accessories
o Weight:
User’s manual:
1
Driver disk:
1
Black ink cartridge:
1
Color ink cartridge:
1
Power cord:
1 (220-240 version only)
5.2 kg without the ink cartridges
o Dimensions
429 x 261 x 167 mm (WxDxH) (Storage)
429 x 613 x 295 mm (WxDxH) (Printing)
295mm
n Stylus Photo 720:
429mm
613mm
Figure 1-9. EPSON Stylus COLOR 670 Dimensions
Product Description
Physical Specification
29
CHAPTER
2
OPERATING PRINCIPLES
EPSON Stylus COLOR 670
Revision A
2.1 Overview
Table 2-1. Printer Mechanism Comparison
Item
Stylus COLOR 660
Stylus COLOR 670
Printhead
E-CHIPS
E-CHIPS +
CR motor
(coil resistance)
7.8Ω
7.8Ω
PF moto
(coil resistance)
7Ω
7Ω
ASF unit
Quiet noise type
Quiet noise type
Paper feeding mechanism
Bottom edge: 14m
enabled
Bottom edge:
3mm enabled
Capping unit
Valve type
Valve less type
Frame parts
SC640 Type
SC 640 type
Main board
C256MAIN-B
C301MAIN
PSB/PSE board
C206PSB\PSE
C301PSB/PSE
This section describes the operating principles of the printer mechanism and
electrical circuit boards. The EPSON Stylus COLOR 670 has the following
boards:
o Main board:
C301MAIN
o Power supply board:
C301PSB/PSE
o Panel board:
C209PNL Board
2.1.1 Printer Mechanism
Pump unit
EPSON Stylus COLOR 670 is based on Stylus COLOR 660 and the basic
specifications for its mechanism are almost same as Stylus COLOR 660.
This printer consists of Print Head, Carriage Mechanism, Paper Feeding
Mechanism, Paper Loading Mechanism, Ink System (Pump Mechanism, Cap
Mechanism, and Carriage Lock Mechanism).
Like other EPSON ink jet printers, the EPSON Stylus COLOR 670 is equipped
with two stepping motors; one for ASF/ paper feeding/ pump mechanism, and
one for CR mechanism. ASF unit uses rear entry front eject system; this
design is the same as Stylus COLOR 660.
For cap assembly, EPSON Stylus COLOR 670 uses valveless mechanism; new
design for this model.
Figure 2-1 on page 32 shows the outline of the printer mechanism.
The table below shows the compatibility of the mechanical units among ,
Stylus COLOR 660 and EPSON Stylus COLOR 670.
Operating Principles
Overview
31
EPSON Stylus COLOR 670
Revision A
Paper Loading
Mechanism
CR Unit
CR Mechanism
(Printhead)
Paper Feed
Trigger Lever
Position
CR Motor
Capping
Position
Ink System
PF Motor
Paper Feeding
Mechanism
Cap
Mechanism
CR Lock
Mechanism
Pump
Mechanism
Figure 2-1. Printer Mechanism Block Diagram
Operating Principles
Overview
32
EPSON Stylus COLOR 670
Revision A
2.1.2 Printhead
The printhead uses a new developed E-CHIPS+ 1 head method and EPSON
Stylus COLOR 670 can perform multiple shot printing and variable printing.
Printhead nozzle configuration is as follows.
I/C Sensor Lever
Nozzle Selector Board
Ink Cartridge
n 32 nozzles x 5 rows (nozzle pitch of each row: 1/90 inch)
Needle
For black nozzles : 2 rows x 32 nozzles
For color nozzles : 3 rows x 32 nozzles
n Ink configuration: black, cyan, magenta, yellow (aligned in this order)
The basic operating principles of the printhead, which plays a major role in
printing, are the same as previous models; on-demand method which uses
PZT (Piezo Electric Element). In order to uniform the amount of ejecting ink,
each printhead has its own head ID (10 figures for EPSON Stylus COLOR 670)
which adjust PZT voltage drive features. The printhead stores the head ID to
EEPROM and generates appropriate PZT drive voltage to prevent amount of
ink from varying by printheads.
Following explains printhead basic components.
Filter
Nozzle Plate
PZT
Cavity
Figure 2-2. Printhead Sectional Drawing
o PZT
PZT is an abbreviation of Piezo Electric Element. Certain amount of
voltage expands and contracts PTZ. The drive wave generated on
MAIN board drives PZT and PZT pushes the top cavity which has ink
stored to discharge the ink from each nozzle on the nozzle plate.
o Ink Cavity
The ink absorbed from the ink cartridge goes through the filter and
then is stored temporarily in this tank called “cavity” until PZT is
driven.
o Nozzle Plate
The board with nozzle holes on the printhead surface is called Nozzle
Plate.
o Filter
When the ink cartridge is installed, if any dirt or dust around the
cartridge needle is absorbed into the head, there is a great possibility
of causing nozzle clog and disturbance of ink flow, and finally causing
alignment failure and dot missing. To prevent this problem, a filter is
set below the cartridge needle, where ink is filtered.
Operating Principles
Overview
33
EPSON Stylus COLOR 670
Revision A
2.1.2.1 Printing Process
Ink Path
PZT
Ink Cavity
This section explains the process in which the printheads of On-Demand
inkjet printers eject ink from each nozzle.
1. Normal State:
When no printing signal is sent from PC, or no PZT drive voltage is
applied, PZT does not change shape, therefore PZT does not squeeze
the cavity. Ink pressure inside the cavity is kept normal.
(Refer to Figure 2-3.)
2) Ejecting State:
When the print signal is output from the C301MAIN board, IC (Nozzle
Selector) located on the printhead unit latches data once by 1-byte
unit. An appropriate PZT latched by the nozzle selector is pushed into
the cavity by the common voltage applied from the main board. By
this operation, ink stored in the cavity spurts out from nozzles.
(Refer to Figure 2-3.)
Nozzle
Nozzle Plate
PZT drive voltage
Figure 2-3. Print Head
Operating Principles
Overview
34
EPSON Stylus COLOR 670
Revision A
2.1.2.2 Printing Method
For print dot system, EPSON Stylus COLOR 670 has the following two types
of printing modes.
n Multiple shot printing
n Variable dot printing
The above two printing modes are automatically selected depending on the
media and the resolution setting. The following explains each printing mode.
o Multiple shot printing
This printing mode is developed to improve the print quality on plain
paper or transparencies in low resolution. The multiple shot printing
mode uses normal dot and the number of dot shots varies from 1 shot
to maximum 3 shots depending on the print data to enable sharp
image output even in a low resolution.
o Variable dot printing
This printing mode is developed to improve the print quality on
exclusive paper. This mode is basically the same as variable dot
printing mode used by EPSON Stylus COLOR 720; micro dot, middle
dot, and large dot compose this mode. Print dot size varies according
to print data and this mode enables even sharper image output on
exclusive paper.
Operating Principles
Overview
35
EPSON Stylus COLOR 670
Revision A
2.1.3 Carriage Mechanism
2.1.3.1 Platen Gap (PG) Adjustment Mechanism
The carriage mechanism consists of carriage motor (CR motor), carriage unit
(including printhead), CR timing belt, CR guide shaft, CR guide frame, CR
home detector (HP sensor) etc.
The PG adjustment mechanism is designed to keep the platen gap correct for
the paper thickness to prevent ink from smearing.
The carriage mechanism moves the carriage back and forth according to the
drive from the carriage motor. (See Figure 2-4)
The PG support lever joins the CR guide shaft, which has an eccentricity
toward PG support lever. Switching the lever from “0” to “+” rotates the CR
shaft and changes the platen gap from narrow to wide (within the range of
1.14mm to 2.04mm).
The following stepping motor is mounted to drive CR mechanism. (See the
table below.)
Table 2-3. Platen Gap Adjustment
Paper
Table 2-2. Carriage Motor
Items
Specifications
Type
4-Phase/ 200-Pole HB Stepping motor
Drive Voltage
+42 V +/ - 5% (DRV IC voltage)
Coil Resistance
7.8 Ω +/ - 105 (per phase)
Inductance
14 mH +/ - 20%
Drive Method
Bi-Polar drive
Driver IC
LB11847
Lever Position
PG adjustment value
All Media
Front (0)
1.14mm between head and platen
If you find any
print problems or
you use thick
paper.
Rear (+)
2.04mm between head and platen
The drive from CR motor is transferred to the CR unit via CR timing belt.
Driven Pulley
Timing Belt
CR motor
Right
Parallel
Adjust
Bushing
PF Roller
PG Adjust
Lever
CR unit
Figure 2-4. Carriage Mechanism (Top view)
Operating Principles
Overview
36
EPSON Stylus COLOR 670
Revision A
2.1.4 Paper Feeding Mechanism
When DE (disengage) lever is at normal position, torque from the PF motor is
sent to the PF roller and paper eject roller as described below.
The paper feeding mechanism consists of paper feed motor (PF motor), PF
roller, paper eject roller, paper guide, and so on.
o To the PF roller:
The paper feeding mechanism feeds paper loaded from ASF using the PF
roller and paper eject roller.
PF motor pinion gear →Combination gear (3, 30) →Spur gear (67.2) →
PF roller
o To the paper eject roller:
PF motor pinion gear →Combination gear (6, 34.4) →Spur gear (36) →
Paper eject roller
EPSON Stylus COLOR 670 allows printing up to the last 3mm like EPSON
Stylus Photo 720 / EPSON Stylus Photo EX3. The star-wheel roller assembly
has been shifted 5 degrees from directly on the top of the eject roller towards
the paper feed roller. This suppresses the tailing edge of the paper so that the
old minimum margin of 14mm has been reduced to only 3mm.
Spur Gear 36
Spur Gear 67.2
Spur Gear26.4
[ Stylus COLOR 600 ]
Combination Gear
Paper
Pinion gear
Combination Gear 3,30
Printhead
Star Wheel Assy.
Support Roller
Combination Gear
Figure 2-5. Paper Feeding Mechanism (Top View)
Eject Roller
Platen
The following stepping motors are used to drive the paper feeding
mechanism.
PF Roller
Bottom margin 3 mm touches
the printhead surface.
[EPSON Stylus COLOR 670]
Table 2-4. Paper Feed Motors
Item
Description
Motor type
4-Phase/ 48-Pole PM Stepping motor
Drive voltage
+42 V +/ - 5% (DRV IC voltage)
Coil Resistance
7.8 Ω +/ - 10% (per phase)
Inductance
14 mH +/ - 20%
Driving method
Bi-Polar drive
Driver IC
LB11847
Operating Principles
Five Degrees
Steady
Figure 2-6. Paper Transportation (Right side view)
Overview
37
EPSON Stylus COLOR 670
Revision A
2.1.5 Paper Loading Mechanism (ASF Unit)
The paper loading mechanism is positioned at the printer rear and consists of
paper load roller, paper return lever, hopper, and so on. The paper loading
mechanism loads paper at the ASF unit and feeds paper to the PF roller. The
ASF unit uses a PF motor. Drive sent from this motor is switched between the
ASF unit side and Pump/PF roller side by the disengage mechanism when the
CR unit moves to the left end of the CR guide shaft.
Drive from the PF motor is transmitted to the ASF as described below:
o Drive sent from PF motor is switched to ASF unit
The CR unit moves to the left end of the CR shaft →the DE lever is
pushed to the left end → the Spur gear 26.4 moves to the left side →the
Spur gear 26.4 revolves PF motor CCW (counterclockwise).
o Drive transmission to the ASF unit
When the PF motor torque is switched to the ASF unit side by the disengage
mechanism, the function of the ASF mechanism varies depending on the
rotational direction of the PF motor, as shown in the table below.
Table 2-5. PF Motor Drive & Function
Directions
Corresponding Functions
Clockwise (*1)
• Picks up and loads paper
Counterclockwise (*1)
• Resets paper to the correct paper set
position using the Return Lever.
(*1): The PF Motor rotational direction = seen from the PF motor pinion gear.
ASF unit stops the paper loading operation when the PE sensor detects that
the paper is loaded to the PF roller.
PF Motor pinion gear →Combination gear (3, 30) →
Spur gear (67.2) →Spur gear (26.4) →Combination gear (16,40.8) →
Spur gear (23.2) →Spur gear (34) →ASF paper load roller shaft
Figure 2-7 shows the disengage mechanism and the parts involved.
Spur Gear 34
Spur Gear 23.2
Combination Gear
16,40.8
Spur Gear 67.2
Spur Gear 26.4
PF Roller
DE lever
Figure 2-7. Disengage Mechanism (Top view)
Operating Principles
Overview
38
EPSON Stylus COLOR 670
Revision A
Torque sent from the ASF/Pump motor to the ASF unit via the disengage
mechanism. ASF paper loading sequence is described below.
1.
When the printer is powered on, the CR unit moves to the DE lever
switching position and switches DE position to the ASF side. PF motor
revolves CW and ASF home position is detected by ASF HP sensor. Then
PF motor revolves CCW, drives paper return lever and return the paper to
the stand-by position.
2.
When the print signal is sent from the PC or the Load/Eject button is
pressed, CR unit moves to the DE lever switching position and switches
DE position to the ASF side. PF motor revolves CW to let the LD roller load
paper.
3.
When PE sensor detects paper loaded from ASF is transported to the PF
roller, the ASF unit stops loading paper. LD roller of ASF stops at ASF HP
when ASF HP sensor detects ASF HP. CR unit switches from DE switching
position to CR HP side and disengages PD roller drive from ASF unit.
4.
When the PF roller ejects paper, CR unit moves to the DE switching
position and switches DE lever to the ASF side. PF motor revolves CCW to
drive paper return lever and returns paper to the stand-by position.
o Paper loading operation
Like previous product, ASF of this printer has the multiple paper loading
prevention mechanism to provide steady paper loading. This mechanism
prevents a sheet of paper from falling from the paper set position into the
paper path. After and before loading paper, by revolving the PF motor
CCW, a paper return lever in the mechanism pushes paper that may have
fallen off back onto the hopper. After this motion is completed, the LD
roller starts loading paper. The paper loading mechanism, including the
multiple paper loading prevention mechanism, is described in the
following steps.
LD Roller
Hopper Spring
Hopper
2
Cam
Pinch Roller
3
Paper Return
Lever
Pad
Pad Spring
[Stand-by State]
[Paper Pickup State]
[PF Roller Paper Load State]
Figure 2-8. Multiple Paper Loading Prevention Mechanism (right side view)
Operating Principles
Overview
39
EPSON Stylus COLOR 670
Revision A
2.1.6 Ink System Mechanism
Figure 2-9 shows the operating principles of the pump mechanism.
Ink system mechanism consists of Pump unit (including CR lock mechanism)
and Capping mechanism.
Counterclockwise
Clockwise
Ink system mechanism drives the Pump unit that presses cap to the Printhead
and ejects ink from Ink cartridge, Head cavity and Cap to the Waste ink pad.
CR lock mechanism assembled in the Pump unit locks the printhead to
prevent the head from slipping off the capping position so that the Printhead
nozzle surface is kept clean and wet.
2.1.6.1 Pump Unit and CR Lock Mechanism
The Pump unit is driven by PF motor. PF motor drive is always transmitted to
the Paper feeding mechanism and Pump unit, and therefore Pump unit and
CR lock mechanism drives according to the PF motor rotational direction, as
shown in the table below.
Tube released
Figure 2-9. Pump Mechanism
Table 2-6. Pump Motor Direction & ASF Function
Directions
Tube squeezed
Corresponding ASF Functions
Clockwise (*1)
• Retracts the wiper.
• Releases the CR lock lever.
Counterclockwise (*1)
• Absorbs ink by the pump unit
• Sets the wiper.
• Sets CR lock lever
(*1): The PF Motor rotational direction = seen from the PF motor pinion gear.
Operating Principles
Overview
40
EPSON Stylus COLOR 670
Revision A
2.1.7 Capping Mechanism
Stylus COLOR 660 has built-in air valves in the capping unit but Stylus
COLOR 670 uses valveless system.
The Capping mechanism covers the Printheads with the cap holder to prevent
the ink around the nozzles from increasing viscosity when the printer is in
stand-by mode or when the printer is off.
Capping mechanism moves up when the CR unit moves to the right end of
the CR guide shaft and covers the printhead nozzle plate.
Air valve function used for the previous models pumps and ejects ink only
inside the cap by sucking ink with the valve open. Valveless system is
developed by changing the ink sequence.
When sucking ink only inside the cap (false absorption), this printer moves
printhead to the left from the cap unit (out of the cap) and drives pump to
perform false absorption.
EPSON Stylus COLOR 670
Stylus COLOR 660
Flag for Carriage
Negative pressure
Flag for Carriage
Ink Eject Valve
Ink Eject Valve
Negative pressure
Valve
Closed state
Released state
The absorbing
power is low.
Flags for
Frame
Air valve is not assembled
in this portion.
Figure 2-10. Valveless Capping Mechanism
Operating Principles
Overview
41
EPSON Stylus COLOR 670
Revision A
n CL2
2.1.8 Ink Sequence
o Initial ink charge
- Ink absorption (Black Ink: 0.47ml, Color Ink: 0.73ml)
After the product is purchased and the printer is turned on for the first
time, the printer performs the initial ink charge and charges ink inside
the head cavity. When the initial ink charge is completed properly, the
printer releases the flag inside the EEPROM and no initial ink charge
will be performed next time the power is turned on. Stylus COLOR 670
takes about 85 seconds to complete initial ink charge sequence.
-Wiping operation (Wipes nozzle plate by the rubber part on the right
half of the wiper.)
-Rubbing operation (Wipes nozzle plate by the felt part on the left half
of the wiper.)
-Flashing operation (Prevents color from mixing. Stabilizes ink
surface inside the nozzle)
o Manual cleaning
When the dot missing by printhead is occurred, Stylus COLOR 670
provides three types of manual CL to clean air bubbled or clogged ink
with viscosity or foreign substances.
The following manual CL sequences can be executed by panel
operation or from the printer driver utility.
n CL1
- Ink absorption (Black Ink: 0.16ml, Color Ink: 0.26ml)
-Wiping operation (Wipes nozzle plate by the rubber part on the right
half of the wiper.)
The above mentioned manual CL is executed by performing nozzle check
pattern and manual CL alternately. The cleaning order is CL1→CL1’→CL2→
CL1. If no test print is executed between each manual CL, only CL1 is to be
performed. Like previous models, when the power is turned ON, the printer
executes power on CL automatically according to power OFF period and the
counter value of the cleaning timer. Power on CL sequence is designed to
prevent the ink viscosity and dot missing caused by foreign substances.
According to each counter value, certain amount of ink (Black: max. 0.12ml,
Color: max. 0.58ml) is consumed by power on CL when the power is applied.
-Flashing operation (Prevents color from mixing. Stabilizes ink
surface inside the nozzle)
n CL1’
- Ink absorption (Black Ink: 0.40ml, Color Ink: 0.63ml)
-Wiping operation (Wipes nozzle plate by the rubber part on the right
half of the wiper.)
-Flashing operation (Prevents color from mixing. Stabilizes ink
surface inside the nozzle)
Operating Principles
Overview
42
EPSON Stylus COLOR 670
Revision A
2.2 Electrical Circuit Operating Principles
The electric circuit of the Stylus COLOR 670 consists of the following boards.
o Main board:
C301MAIN Board
o Power supply board:
C301PSB/PSE Board
o Panel board:
C209PNL Board
2.2.1 C301PSB/PSE Board
The power supply boards of Stylus COLOR 670 use a RCC (Ringing Chalk
Converter) circuit, which generates +42VDC for drive line and +5VDC for logic
line to drive the printer. The application of the output voltage is described
below.
Table 2-7. C301 PSB Board
Voltage
This section provides operating principles of C301PSB/PSE Board and
C301MAIN Board. Refer to Figure 2-11 for the major connection of the three
boards and their roles.
Printer Mechanism
C209 PNL (Stylus COLOR 670)
CR Motor
C301MAIN Board
PF Motor
3.3V Driver IC
5V Driver IC
Head Driver Board
3.3V Regulator
Several Sensors
Power Off
+5V DC
+42V DC
C301 PSB/PSE
Board
Application
+42VDC
• Motors (CR Motor, ASF/Pump Motor, PF Motor)
• Printhead common voltage
• Printhead nozzle selector 42V drive voltage
+5VDC
•
•
•
•
C301MAIN control circuit logic
C301MAIN IC16 3.3V generating regulator
C209 PNL board
Sensors
Stylus COLOR 670 uses the delay circuit (secondary side power switch). Use
of the secondary switch enables the circuit to keep supplying voltage to 5 V
line and 24 V line for approximately 30 seconds if the printer power is turned
off through the panel switch. Even if the printer is turned off through the
panel switch while it is in operation, the printer turns the power supply off
after performing the capping operation to prevent ink leakage or dry
printhead nozzles that may be caused when the printhead is left without
capping.
AC voltage input from AC inlet first goes through filter circuit that removes
high frequency components and is then converted to DC voltage via the
rectifier circuit and the smoothing circuit. DC voltage is then lead to the
switching circuit and FET Q1 preforms the switching operation. By the
switching operation of the primary circuit, +42VDC is generated and stabilized
at the secondary circuit. This +42VDC generated by the secondary circuit is
converted to +5VDC by the chopping regulator IC of the secondary circuit.
Figure 2-11. Electric Circuit of Stylus COLOR 670
Operating Principles
Electrical Circuit Operating Principles
43
EPSON Stylus COLOR 670
Revision A
o +5V line constant voltage control circuit:
+ 4 2 V D C
+ 5 V D C
The output level of the +5VDC line voltage is monitored by the
regulator IC51. If abnormal voltage is detected, the information is fed
back to the internal comparator.
P S C S ig n a l
fr o m M a in b o a r d
Z D 5 3
+ 5 V D C L in e
O v e r V o lta g e
L im ita tio n
IC 5 1
+ 5 V R e g u la to r
o +42VDC line over voltage protection circuit:
Z D 5 2 ,8 6
+ 4 2 V D C L in e
O v e r V o lta g e
L im ita tio n
Z D 9 0
+ 4 2 V D C L in D r o p
L im ita tio n C ir c u it
Z D 8 1 -8 6 ,Z D 5 1
+ 4 2 V D C L in e
C o n s ta n t C o n tro l
The output voltage line is monitored by two Zener diodes. If the
output level of the voltage level of +42VDC line exceeds +48V, this
circuit halts the operation of the switching FET and prevents high
voltage from applied to the secondary side.
o +5V line over voltage/ line over current protection circuit:
C 8 4 ,Q 8 4
P o w e r D ro p
D e la y C ir c u it
C 5 1
S m o o th in g
C ir c u it
P C 1
P h o to
C o u p le r
D 5 1
T R A N S (T 1 )
C 1 1
Q 2 ,Q 3 ,Q 3 1
Q 1
S m o o th in g
C ir c u it
O v e r C u rre n t
P r o te c tio n
F 1
A b n o rm a l
F e e d b a c k c ir c u it
M a in S w itc h in g
C ir c u it
F ilte r C ir c iu t
L 1
This protection circuit is in the same line as the +42V over voltage
protection circuit is located. The output voltage level of the +5V line is
monitored by a Zener diode. This circuit shuts down the +5V line
forcefully when the voltage level exceeds +9V.
o +42VDC line over current protection circuit:
The output voltage is monitored by two transistors. When the output
voltage is dropped abnormally, this circuit regards this as short circuit
and halts the operation of the primary switching FET via photocoupler
to prevent over current from flowing.
F u ll W a v e
R e c tifie r c ir c u it
D B 1
A C In p u t
Figure 2-12. C301PSB/PSE Board Block Diagram
The C301PSB/PSE board has the various control circuits to stop voltage
output if a malfunction occurs on the power supply board or the main board
while the printer mechanism is on duty. Following explains each control and
protection circuit.
o +42V line constant voltage control circuit:
The output level of +42V line is monitored by a detection circuit
composed of the seven Zener diodes. When the output voltage
becomes less than 35V, this circuit prevents the voltage from
dropping by driving the primary circuit switching FET.
Operating Principles
Electrical Circuit Operating Principles
44
EPSON Stylus COLOR 670
Revision A
2.2.2 C301MAIN Board
See Figure 2-13 for the C301MAIN board block diagram.
The printer mechanism is controlled by C301MAIN. The 3.3V regulator IC 16 is
mounted on the MAIN board and generates +3.3V from 5V. +3.3V is to drive
the main elements on the logic circuit.
CR Sensors
CN9 HD FFC
Head
P-ROM
(IC3)
CN8 HD FFC
CR Motor
Q2 & Q3
Batt1
Power
CN10
D-RAM
(IC17)
CN1 Parallel
3.3V
Regulator
IC (IC16)
Parallel I/F
Receiver IC
74LV161284
(IC9)
PF Motor
Common
Driver
(IC15)
Timer &
Reset IC
(IC5)
CN12
Motor
Driver
(IC13)
EEPROM
(IC6)
Motor
Driver
(IC14)
ASIC
CPU
Address
HD64F232
8F (IC1)
CN11
E05B70**
(IC2)
Data
CN7
C209 PNL (Stylus Photo 720)
CN6
CN4
CN5
USB I/F
Receiver
IC (IC10)
CN3
ASF HP Sensor
CR1
PE Sensor
HP Sensor
Figure 2-13. Block Diagram for the C301MAIN Board
Operating Principles
Electrical Circuit Operating Principles
45
EPSON Stylus COLOR 670
Revision A
2.2.2.1 Main elements
Table 2-8 shows the main elements on C301MAIN.
Table 2-8. Main Elements
IC
Location
Function
CPU
HD64F/2328F
IC1 (3.3V)
16bit CPU mounted on the MAIN board is driven
by clock frequency 24MHz and controls the
printer.
Gate Array
E05B70**
IC2
(3.3V & 5.0V)
•
•
•
•
•
•
PROM
IC3 (3.3V)
• Capacity 4/8/16MB, Bus= 16 bit EEPROM
• Program or program + CG (Character
generator)
RAM
IC17 (3.3V)
Bus= 16 bit, 4Mbit DRAM
AT93C56
IC6 (5.0V)
2kbit EEPROM
• Default value setting
• Parameter backup
RTC-9810SA
IC5 (5.0V)
Reset/ Timer IC
• For +5V; reset when +4.3V is detected
• For +42V, reset when +35.5 is detected
• Timer function is attached powered by
lithium battery.
74V161284
IC9 (5V)
IEEE1284 parallel I/F transceiver IC
PDIUSBP11A
IC10 (3.3V)
USB Rev1 transceiver
LB11847
IC13
CR motor drive IC
LB11847
IC14
PF/ PUMP/ ASF motor drive IC
CXA2128S
IC15
Head drive control HIC
• Generates head common voltage.
Operating Principles
Motor Control
Head voltage control
EEPROM control
Sensor supervise
Timer IC supervise
Parallel I/F, USB I/F control
Electrical Circuit Operating Principles
46
EPSON Stylus COLOR 670
Revision A
o Printhead Driver CircuitHead common driver circuit
2.2.2.2 Printhead Driver Circuit
The printhead driver circuit consists of the following two components:
n Head common driver circuit
(Common driver IC15 & Wave amplifier transistor Q2, 3)
n Nozzle selector IC on the printhead driver board.
The common driver (IC15) generates a reference drive waveform according to
the output signals from the ASIC (IC2). The reference drive waveform is
amplified by the transistors Q2 and Q3 and then transferred to the nozzle
selector IC on the head board. Print data is converted to serial data by the
ASIC and then sent to the nozzle selector IC on the head board. Based on the
serial data, the nozzle selector IC determines the nozzles to be actuated. The
selected nozzles are driven by the drive waveforms produced by the common
driver. See Figure 2-14 for the printhead driver circuit block diagram.
+ 4 2
+ 5 V
G N D
G N D
G N D
G N D
F 1
G N D
C X A 2 1 2 8 S (IC 1 5 )
2 8
V C C 4 5
V c c 4 5 _ 2
N P N B
F B
P N P B
2 7
A 0
2 5
A 2
4
C L K 1
C L K 2
/F L O O R
V C C 5
/R S T
D A T A
D C L K
/E
V O U T G N D
2 6
A 1
3
A 3
5
6
2 9
3 0
1
G N D
2 2
1 0
2 3
2 0
1 8
1 6
2 4
Q 2
+ 5
5 8 H
5 9 H
6 2 H
6 3 H
5 0 H
5 1 H
5 2 H
5 3 /H
5 5 /H
5 4 H
4 9 H
/H
V D D
C O M
1 5
G N D 2
G N D 2
G N D
1 3
G N D
6
G N D
4
W A 0
S W C 0
W A 1
W A 2
S W C 1
W A 3
H N C H G
W A 4
W C L K 1 H S O C L K
W C L K 2
H S 0 1
W F L R
W R S T
H S 0 2
W S D A T A
H S 0 3
W S C L K
W S L A T
H S 0 4
H S 0 5
H S 0 6
H S 0 C M D
H 0 6 4 F 2 3 2 8 F
(IC 1 )
7 9
1 6
8 0
1 5
6 5
G N D
C O B
C O C
N C H G
1
6 6
3
6 7
1 2
6 8
1 1
6 9
1 0
7 1
S C K
S I2
S I3
S I4
8
7 3
S I5
7
S I6
S P
5
3
A N 0
C N 9
S I1
9
7 2
7 4
Printing data are allocated to the six rows, the number of the head
nozzle rows, and converted into serial data by the ASIC (IC2). Then the
converted data is transferred to the nozzle selector IC through the
seven signal lines (SI0 to SI5. SI6 is not used in this product). Data
transmission from the ASIC to the nozzle selector synchronizes with
the SCK clock signal and the LAT signal. Referring to the transferred
data, nozzles to be activated are selected, and the PZTs of the selected
nozzles are driven by the drive waveform output from the head
common driver.
G N D 2
1 1
V H C T L
o Head nozzle selector circuit
C O M
1 3
1 4
C N 8
C O M
1 4
1 2
E 0 5 B 7 0 * * (IC 2 )
5 6
Q 3
V H V
1 6
The reference head drive waveform is produced in the common driver
(IC15) based on the following 12 signal lines output from the ASIC
(IC2); A0-A4, CLK1, CLK2, FLOOR, RST, DATA, DCLK, and E.
Based on the DATA signal output from the ASIC (IC2), the original
data for the head drive waveform is written in the memory in the
common driver (IC15). The addresses for the written data are
determined by the A0 - A4 signals, and, of among, data used to
determine the waveform angles is selected and appropriate head
driver waveform is generated. Generated head driver waveform is
transferred to nozzle selector IC on the head driver board and applied
to the nozzle PZT specified by nozzle selector IC.
T H M
1 0 5
Figure 2-14. Printhead Drive Circuit
Operating Principles
Electrical Circuit Operating Principles
47
EPSON Stylus COLOR 670
Revision A
2.2.2.3 PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit
The motor driver IC (IC14) on C301MAIN drives PF/ PUMP/ ASF motor. Stylus
COLOR 670 uses 4-phase 48-pole hybrid type stepping motor and performs
constant current bi-polar drive.
ASIC (IC2) converts PF motor phase control signal to LB11847 micro step
drive form and outputs to motor driver IC (IC14) LB11847 from port 107, 118.
Based on this signal, IC14 determines the phase mode.
The current value on each phase is determined by ASIC (IC2) and outputs
from port 109, 110, 111, 113, 114, 115 to driver IC (IC14). Motor driver IC
generates motor driver waveform based on these input signals and controls
the motor.
+ 5 V
E 0 5 B 7 0 **
(IC 2 )
P F A I1
P F A I2
P F A I3
P F B I1
P F B I2
P F B I3
P F P H A A
P F P H A B
P F E N B A
P F E N B B
L B 1 1 8 4 7
(IC 1 4 )
2 5
IA 1
1 0 9
2 4
IA 2
1 1 0
2 3
IA 3
1 1 1
2 2
IA 4
1 8
IB 1
1 1 3
1 9
IB 2
1 1 4
2 0
IB 3
1 1 5
2 1
IB 4
7
O U T A
1
A
6
O U T A -
1 1 8
1 0 8
1 1 6
1 1 2
B
O U T B
2 7
9
P H A S E 1
1 6
P H A S E 2 O U T B -
2 6
3
A /
1 0 7
8
B /
R o to r
2
4
E N B L 1
1 7
D A 1
C N 7
2
1 3
E N B L 2
V re f1
V re f2
H D 6 4 F 2 3 2 8 F
(IC 1 )
Figure 2-15. PF Motor Driver Circuit Block Diagram
Operating Principles
Electrical Circuit Operating Principles
48
EPSON Stylus COLOR 670
Revision A
2.2.2.4 CR Motor Driver Circuit
2.2.2.5 Reset Circuit
Motor driver IC (IC13) on C301MAIN board drives CR motor.
Reset circuits consist of reset/ timer IC (IC5) and peripheral elements. Reset
circuits are attached on the C301MAIN board to monitor the two voltages: +5V
for the logic line and +42V for the drive line. When each circuit detects
abnormality on the corresponding line, it outputs a reset signal to reset CPU
(IC1) and ASIC (IC2). This function is necessary to prevent the printer from
operating abnormally. This IC monitors both +5V and +45 lines but can reset
them independently. The reset circuits outputs reset signal when +5V line
becomes 4.3V or lower or +42V line becomes 35.5V or lower.
Stylus COLOR 670 uses 4-phase 200-pole hybrid type stepping motor and
performs constant current bi-polar drive.
ASIC (IC2) converts CR motor phase control signal to LB11847 micro step
drive form and outputs to motor driver IC (IC13) LB11847 from port 93, 105.
Based on this signal, IC13 determines the phase mode.
The current value on each phase is determined by ASIC (IC2) and outputs
from port 95 - 112 to driver IC (IC13). Motor driver IC generates motor driver
waveform based on these input signals and controls the motor.
E 0 5 B 7 0 **
(IC 2 )
9 5
2 5
IA 1
C R IA 1
9 6
2 4
IA 2
C R IA 2
9 7
2 3
IA 3
C R IA 3
9 8
2 2
IA 4
C R IB 0
9 9
1 8
IB 1
C R IB 1
1 0 0
1 9
IB 2
C R IB 2
1 0 1
2 0
IB 3
C R IB 3
1 0 2
2 1
IB 4
C R P H A B
C R E N B A
C R E N B B
/R ES
81
IC5
RTC-9810SA
1 0 5
7
O U T A
9 4
1 0 4
1 6
P H A S E 2 O U T B -
2 6
1 1 1
8
R o to r
2
B
B /
FR ST
IC2
E05B570**
10
140
3
128
2
136
/N M I
M R ES
/R ESET
VB K
CE
GN D
SC LK
TC LK
D A TA
TD A TA
TC E
op05
4
Figure 2-17. Reset Circuit Block Diagram
E N B L 1
2
1 3
Main signal lines are explained below;
E N B L 2
V re f1
V re f2
H D 6 4 F 2 3 2 8 F
(IC 1 )
Figure 2-16. CR Motor Driver Circuit Block Diagram
Operating Principles
/VD T
/R ST
3
A /
9
VD D
B A T1
O U T A -
P H A S E 1
VIN
+5V
1
A
6
O U T B
2 7
+42
C N 1 2
9 3
1 7
D A 0
IC1
HD64F2328F
L B 1 1 8 4 7
(IC 1 3 )
C R IA 0
C R P H A A
Reset ICs have built-in timer function, which manages timer control based on
lithium battery.
n
n
n
n
n
n
RST:
Reset line
CE:
Chip enable line
VIN:
+42V line supervising line
VDD:
+5V line supervising line
VBK:
Lithium battery backup voltage line
DATA:
Timer data line
Electrical Circuit Operating Principles
49
EPSON Stylus COLOR 670
Revision A
2.2.2.6 EEPROM Control Circuit
Since EEPROM is nonvolatile memory, it keeps written information if the
printer power is turned off. When the printer is turned ON, ASIC reads data
from EEPROM (IC6) and when the power is turned OFF it stores data to
EEPROM.
Information stored in EEPROM is listed below.
n Various ink counter (I/C consumption counter, waste pad counter,
EEPROM is connected to ASIC with 4 lines and each line has the following
function.
n CS:
Chip selection signal
n CK:
Data synchronism clock pulse
n DI:
Data writing line (serial data) at power off.
n DO:
Data reading line (serial data) at power on.
etc.)
n Mechanical setting value (Head ID, Bi-D adjustment, USB ID, etc.)
n Destination data (printable area setting, CG setting, etc.)
n Option setting (CPSI password, etc.)
See Appendix for EEPROM Address Map that provides detailed information
on the values stored in EEPROM.
E05B58**
(IC2)
AT93C46
(IC6)
+5V
8
6
5
1
206
2
205
3
204
DO 4
203
Vcc
CS
O RG
SK
G ND
DI
EEC S
EEC K
EEC O
EEC I
Figure 2-18. EEPROM Circuit Diagram
Operating Principles
Electrical Circuit Operating Principles
50
EPSON Stylus COLOR 670
Revision A
o Black/ Color cartridge sensor (COB/ COC)
2.2.2.7 Sensor Circuit
C301MAIN is equipped with the following five sensors to detect the status of
the printer.
o HP Sensor
HP sensor uses photo interrupter method. HP sensor detects the
carriage HP (home position). HP is the standard position for the print
start position. When CR unit is within the home position, the sensor
outputs +5V: When CR unit is out of the home position, the sensor
outputs 0V.
Cartridge sensor uses mechanical method. This sensor detects
whether a black or color ink cartridge is installed in the CR unit. When
an I/C is installed, this sensor outputs 0V: When no I/C is installed, the
sensor outputs +5V.
The block diagram for the sensor circuit is shown below:
IC2
E05B70**
+5V
+5V
o PE sensor
PE sensor uses photo interrupter method. PE sensor detects paper on
paper path of the printer. If paper passes, PE sensor outputs 0V. If
there is no paper, the sensor outputs +5V. The signal output from this
sensor and the stepping pulse of PF motor determines the paper top
position and the bottom position and it is reflected to the printable
area of paper feed direction.
H PV
+5V
The thermistor is attached directly on the printhead driver board. It
monitors the temperature around the printhead and determines the
proper head drive voltage according to the ink viscosity that varies by
the temperature. This information is fed back to the ASIC analog port.
When the temperature rises, the head drive circuit lowers the drive
voltage: When the temperature lowers, the head drive circuit rises the
drive voltage.
CN4
CR HP Sensor
HP
PEV
+5V
o Thermistor (TH)
GND
+5V
2
+5V
ASF HP sensor uses photo interrupter method. This sensor consists of
the ASF HP detector wheel, which is attached on the ASF LD roller
shaft, and a photo sensor. The ASF HP detector wheel has a small
window and when this part is positioned between photo sensor
terminals, the sensor detects ASF HP. When this window is within the
ASF HP, the sensor outputs 0V, and when it is out of ASF HP, +5V is
output. This sensor detects the ASF return lever position at the power
on and detects standby state of the ASF LD roller.
CN6
ASF HP Sensor
A SF
+5V
SW A0
GND
+5V
SW A2 5
o ASF HP sensor
Operating Principles
A SFV
GND
+5V
SW A1 3
CN5
PE Sensor
PE
SW C0
79
SW C1
80
Black I/C sensor
coc Color I/C sensor
CN9
Head FFC
GND
IC1
H064F2328F
CPU
105
AN0
TH M
Head thermistor
Figure 2-19. Sensor Circuit Diagram
Electrical Circuit Operating Principles
51
CHAPTER
3
TROUBLESHOOTING
EPSON Stylus COLOR 670
Revision A
3.1 Overview
Table 3-2. Sensor Specifications
This chapter describes how to identify troubles in two levels: unit level repair
and component level repair. Refer to the flowchart in this chapter to identify
the defective unit and perform component level repair if necessary. This
chapter also explains motor coil resistance, sensor specification and error
indication.
S T A R T
Sensor Name
HP Sensor
PE Sensor
Check Point
U n it R e p a ir
( M a in b o a r d )
U n it R e p a ir
(P S B /P S E )
Switch Mode
Less than 0.7V
Open (Out of HP
range)
More than 2.4V
Close (Within HP
range)
Less than 0.7V
Open (Paper
exists)
More than 2.4V
Close (No paper)
Less than 0.7V
Open (Paper feed
roller is at the
home position)
More than 2.4V
Close (Out of
home position)
Analog signal
10 K (at 24 ° C)
CN4/Pin 1 and 2
CN5/Pin 1 and 2
U n it L e v e l T r o u b le s h o o tin g
ASF HP Sensor
Signal Level
CN6/ Pin 1 and 2
U n it R e p a ir
( P r in te r M e c h a n is m )
Thermistor
(THM)
Head side CN9/
Pin 14 and 4
Head side CN9/
Pin 16 and 4
Open (No Cartridge): High
D is a s s e m b le a n d A d ju s tm e n t
Black cartridge
sensor (COB)
Head side CN9/
Pin 15 and 4
Open (No Cartridge): High
E N D
Color cartridge
sensor (COC)
Close (Cartridge is installed): Low
Close (Cartridge is installed): Low
Figure 3-1. Troubleshooting Flowchart
Table 3-1. Motor Coil Resistancs
Motor
Location
Check Point
Resistance
CR Motor
CN12
Pin 1 and 3
Pin 2 and 4
7.8 Ohms ± 10%
(at 25 ° C/ phase)
PF Motor
CN7
Pin 1 and 3
Pin 2 and 4
7 Ohms ±10%
(at 25 ° C/ phase)
Troubleshooting
Overview
53
EPSON Stylus COLOR 670
Revision A
3.2 Unit Level Troubleshooting
Table 3-3. LED Indicators
LED Indication
Condition
Power
Paper
Check
Ink End
(Black)
Ink End
(Color)
No Paper
--
On
--
--
Paper Jam
--
Blink
Off
Off
Ink End /
No Cartridge
(black)
Ink End /
No Cartridge
(color)
Ink Low
(black)
Ink Low
(color)
Maintenance
Request
Fatal Error
--
--
--
--
Blink
Blink
Troubleshooting
--
--
--
--
Blink
Blink
On
--
Blink
--
Blink
On
Remedy
You can identify the troubles, using flowcharts in this section and then find
defective unit. When you find out defective unit, refer to “Unit Repair (Printer
Mechanism)” to find defective components and replace them.
Set paper
Table 3-4. Top-Level Troubleshooting
Remove jammed paper
Symptom
Problem
Flowchart No.
Close the cartridge
cover properly or
replace the ink
cartridge with new
one.
Printer does not operate
at power on.
LEDs do not light.
Printer mechanism does not
operate.
Flowchart 3-1
Error is detected
Error is indicated by LED indication.
Flowchart 3-2
On
Close the cartridge
cover properly or
replace the ink
cartridge with new
one.
Failure occurs during
printing.
Printing is not performed.
Abnormal printing (dot missing, etc.) Flowchart 3-3
Print quality is poor.
Printer does not feed
paper correctly.
No paper is fed.
Paper feed is irregular.
Paper jam occurs.
Flowchart 3-4
--
Replace he ink
cartridge with new
one.
Control panel operation
is abnormal.
No response to button access.
Flowchart 3-5
Blink
Replace he ink
cartridge with new
one.
Blink
Replace the waste ink
pad and reset the
waste ink counter
stored in EEPROM.
--
On
Turn off and back on
the printer. If the
problem still remains,
repair the related units.
Unit Level Troubleshooting
54
EPSON Stylus COLOR 670
Revision A
3.2.1 Printer does not operate at power on
Start
Start
AC voltage
= OK?
Check the LCD
error message.
No
Use the correct AC
voltage.
Yes
Is fuse
F1 burned out?
Yes
Is the
problem carriage
related?
Replace the fuse,
disconnect CN10 on
MAIN board, and
turn on power.
No
Check the output
voltage of CN2 on
the power supply.
Yes
Yes
Turn off the printer
and move the
carriage by hand.
No
No
Yes
No
Is the
output voltage
normal?
3.2.2 Error is detected
Did
the fuse burn
out again?
Yes
Does it
move smoothly?
Replace the ink
cartridge.
Is it an ink
cartridge error?
Yes
No
Maintenance Error?
Replace MAIN
board if the CR
motor operates
properly.
Yes
Does error still
occur?
No
Yes
Replace the
power supply.
Replace the MAIN
board.
Replace the waste ink
pad and reset the
EEPROM.
No
Yes
Problem solved?
No
Check the ink
cartridge sensor and
replace the printhead
if necessary.
Check the motors,
printhead, and
other
components.
Refer to “Unit
Repair (Printer
Mechanism)”
End
End
End
Flowchart 3-2.
Flowchart 3-1.
Troubleshooting
Unit Level Troubleshooting
55
EPSON Stylus COLOR 670
Revision A
3.2.3 Failure occurs during printing
3.2.4 Printer does not feed paper correctly
Start
START
Print a self
test.
Paper
loaded correctly
in ASF?
No
Did it print
properly?
Set the paper correctly.
Yes
Is
print quality
normal?
Yes
MAIN
board cables
are OK?
Yes
Perform
adjustment.
Do PF roller
and platen
rotate?
No
No
Connect them.
No
No
Problem
solved?
Replace the ink
cartridge and
print self test.
Refer to “Unit Repair
(Printer Mechanism)”.
No
Remove any
obstruction in the paper
path if there is any.
Problem
solved?
Problem
solved?
Is the
problem
solved?
Replace the
MAIN board.
NO
Refer to “Unit Repair
(Printer Mechanism)”.
YES
No
END
END
End
Check the PF motor.
No problem = replace
the MAIN board.
Yes
Refer to “Unit Repair
(Printer Mechanism)”.
Problem
solved?
YES
Clean the roller of
paper path.
No
Yes
NO
Is the
PF motor
running?
Yes
Yes
Yes
NO
YES
Perform cleaning.
Problem
solved?
NO
End
End
Flowchart 3-4.
Flowchart 3-3.
Troubleshooting
Unit Level Troubleshooting
56
EPSON Stylus COLOR 670
Revision A
3.2.5 Control panel operation is abnormal
This section provides in-depth information for repairing the power supply
board so that you can repair the board to the small parts level. The table
below lists the probable causes for each symptom: you can select appropriate
symptom from the table and check each parts and its function as described in
the checkpoint.
START
Control
panel connected
correctly?
YES
3.3 Unit Repair (Power Supply Board)
NO
Table 3-5. PSB Troubleshooting
Symptom
Connect the
control panel
correctly.
Is the
problem
solved?
Condition
YES
Cause
Check point
Solution
F1 is open.
Check F1 is normal or not by
using a multimeter.
Replace
F1.
Trans T1 is
open.
Check T1 is normal or not by
using a multimeter.
Replace
T1.
Check the drain waveform.
NO
FET(Q1) is
broken.
Replace the
control panel.
Control
panel connected
correctly?
The printer
does not
operate at
all.
NO
Replace
Q1.
+42VDC
line does
not work.
Check the collector wave.
Replace the
MAIN Board.
YES
END
Replace
Q2 or Q3.
PC1 is
broken.
Replace
PC1.
END
Flowchart 3-5.
Troubleshooting
Q2 or Q3 is
broken.
Unit Repair (Power Supply Board)
57
EPSON Stylus COLOR 670
Revision A
3.4 Unit Repair (Control Board)
Table 3-5. PSB Troubleshooting (continued)
Symptom
Condition
Cause
Check point
Solution
This section provides in-depth information for repairing C301MAIN board so
that you can repair the board to the small parts level. The table below lists the
probable causes for each symptom: you can select appropriate symptom
from the table and check each parts and its function as described in the
checkpoint.
Check the output waveform
(pin 8).
The printer
does not
operate at
all.
+5VDC
line does
not work.
IC51(FA36
35P) is
broken.
Replace
IC51.
Table 3-6. Control Board Troubleshooting
Symptom
Condition
Cause
Check point
Solution
Check +5VDC line (Pin 7
of IC5) and reset signal
(Pin 2 of IC5).
Reset
circuit is
broken.
5VײÝ
Replace
IC8.
/RESET
The
printer
does not
operate at
all.
CPU does not
work.
ROM is not
selected
correctly.
Unit Repair (Control Board)
Replace
IC3.
Check the signal
waveform Pin 86 of IC1.
CPU is
broken.
Troubleshooting
Check that the waveform
of Pin 11 of IC3 reverses
High/Low.
Replace
IC2.
58
EPSON Stylus COLOR 670
Revision A
Table 3-6. Control Board Troubleshooting (continued)
Symptom
Condition
Cause
Check point
Solution
Check the PHASE (Pin 16
and 27) of IC13 and
signal waveform of OUT
(Pin 7,6,9,8).
If PHASEDATA is
not input,
replace IC2.
IC2 is
broken.
Carriage
does not
operate
correctly.
CR motor does
not operate
properly.
IC13 is
broken.
Troubleshooting
Check if waveform of
OUT (Pin 7,6,9,8) is
output from IC13.
If OUT is
not output
from IC13,
replace
IC13.
Unit Repair (Control Board)
59
EPSON Stylus COLOR 670
Revision A
Table 3-6. Control Board Troubleshooting (continued)
Symptom
Condition
Cause
Check point
Solution
Table 3-6. Control Board Troubleshooting (continued)
Symptom
Condition
Cause
Check the PHASE (Pin
16,27) of IC 14, and
signal waveform of OUT
(Pin 7,6,9,8).
Paper
feed
operation
is
abnormal.
PF motor does
not revolve.
Abnormal
printing
IC14 is
broken.
Troubleshooting
Check if waveform of
OUT (Pin 7,6,9,8) is
output from IC14.
Solution
Check the signal
waveform of DATA (Pin
29) of IC15 and Common
NPNB/PNPB(Pin 20/16).
If PHASE
signal is
not input,
replace IC2.
IC2 is
broken.
Check point
If OUT is
not output
from IC14,
replace
IC14.
Printing is not
performed or
the print data is
turned to the
set of
unrecognizable
characters.
Unit Repair (Control Board)
IC2 is
broken.
If DATA is
not input,
replace IC2.
IC15 is
broken.
If no output
signal of
NPNB/
PNPB, FB
from IC15,
replace
IC15.
Check the output
waveform of NPNB/
PNPB, FB of IC15.
60
EPSON Stylus COLOR 670
Revision A
3.5 Unit Repair (Printer Mechanism)
Table 3-7. Printer Mechanism Troubleshooting (continued)
Symptom
Condition
Cause
Check Point
Solution
CR HP sensor
is defective.
-Does panel LED
indicate fatal
error?
-Check if the
connector of CR
HP sensor is
properly
connected to the
sensor or CN4 on
the MAIN board?
-Check if CR HP
sensor operates
properly.
-Connect CR
HP sensor
connector.
-Exchange CR
HP sensor.
The CR motor
is defective.
Check the inner
coil resistance
and see if there is
any
disconnection of
the coil.
(Refer to
Table 3-1,
“Motor Coil
Resistancs,” on
page 53.)
Exchange the
CR motor.
This section provides in-depth information for repairing the printer
mechanism so that you can repair the printer mechanism to the small parts
level. The table below lists the probable causes for each symptom: you can
select appropriate symptom from the table and check each parts and its
function as described in the checkpoint.
Table 3-7. Printer Mechanism Troubleshooting
Symptom
Abnormal
pump
mechanism
Defective
pump
absorption
Condition
Abnormal PF
motor
operation when
the power is
turned on.
-Dot missing is
not solved even
after cleaning
operation.
-Used ink is not
drained to the
waste ink pad.
Troubleshooting
Cause
Check Point
Solution
Foreign
substances
are loaded in
the PF gears.
Manually drive
the PF drive gear
and check if it
rotates normally.
The PF motor
is defective.
Check the inner
coil resistance
and see if there is
any
disconnection of
the coil.
(Refer to
Table 3-1,
“Motor Coil
Resistancs,” on
page 53.)
Exchange the
PF motor.
The pump
tube is
squashed.
Check the tube
visually.
Exchange the
tube.
The cap is
damaged or
deformed.
Check the cap
visually.
Exchange the
cap
mechanism.
Remove any
foreign
substances.
Abnormal
carriage
operation
Carriage
operation is
abnormal when
tuning on the
power.
Unit Repair (Printer Mechanism)
61
EPSON Stylus COLOR 670
Revision A
Table 3-7. Printer Mechanism Troubleshooting (continued)
Symptom
Condition
Carriage
operation is
abnormal when
tuning on the
power.
Cause
CR lock lever
is not
released.
Abnormal
carriage
operation.
Carriage
operation is
abnormal
during the
printing
operation.
Troubleshooting
Carriage
movement is
not smooth.
Check Point
Solution
-Check if the
drive of PF motor
is transmitted to
paper eject roller.
-If paper eject
roller revolves by
the drive from PF
motor, check if
the pump unit,
paper eject roller
and right end
gear are engaged
properly.
Manually move
the carriage and
check if it moves
smoothly.
Clean the
carriage guide
shaft and
lubricate it.
Check the
tension of the
timing belt.
Repair the
tension
mechanism or
replace it.
Table 3-7. Printer Mechanism Troubleshooting (continued)
Symptom
Printing is
not
performed.
Condition
Carriage moves
but no printing
is performed.
Check if there is
Remove any
any foreign
foreign
substances on
objects.
the carriage path.
Unit Repair (Printer Mechanism)
Cause
Check Point
Solution
Head FFC is
not connected
properly.
Check visually if
the head FFC on
the carriage or
on the board is
connected
properly.
Connect FFC
properly.
FFC is
disconnected
inside.
Check the FFC by
using a
multimeter if
there is any
electric
conductivity.
Replace the
FFC.
I/C is
defective.
Install a new I/C
and perform the
self-test.
Replace I/C.
Head Unit is
defective.
If the condition
does not
improve even
after 2 or 3 times
of cleaning
operation,
replace the head
unit and perform
the self-test.
Replace the
head unit.
62
EPSON Stylus COLOR 670
Revision A
Table 3-7. Printer Mechanism Troubleshooting (continued)
Symptom
Abnormal
printing
Condition
Only a
particular dot
causes
abnormal
printing.
Cause
Check Point
Solution
Printhead
surface is not
clean.
Check the
printing quality
after performing
the cleaning
several times.
Perform
cleaning.
Head unit is
defective.
Check the
printing quality
after performing
the cleaning
several times.
Replace the
head, if the
print quality
does not
recover.
Absorber in
the cap is
touching the
head surface.
Visually check
the condition of
the head
absorber.
Replace the
absorber in
the cap if it is
deformed.
Table 3-7. Printer Mechanism Troubleshooting (continued)
Symptom
Condition
Sometimes
printing is not
performed.
Abnormal
Printing
The print data
is turned to the
set of
unrecognizable
characters.
Troubleshooting
Unit Repair (Printer Mechanism)
Cause
Check Point
Solution
Printhead
surface is not
clean.
Perform cleaning
several times
and check the
print quality.
Perform
cleaning.
FFC is
disconnected
inside.
Check the FFC by
using a
multimeter if
there is any
electric
conductivity.
Replace the
head FFC.
Head FFC is
out of
connection.
Check if head
FFC on the
carriage or on
the board is
connected
properly.
Connect Head
FFC firmly.
Head Unit is
defective.
Perform cleaning
operation 2 or 3
times and
perform the selftest.
Replace the
head unit, if it
does not
recover after
performing
cleaning.
I/C is
defective.
Install the new
I/C and perform
self-test.
Replace I/C.
The head FFC
is out of
connection.
Check the FFC by
using a
multimeter if
there is any
electric
conductivity.
Connect FFC
properly.
The head unit
is defective.
Check
connection with
the head FFC.
Replace the
head if there is
no connection
problem with
the FFC.
63
EPSON Stylus COLOR 670
Revision A
Table 3-7. Printer Mechanism Troubleshooting (continued)
Symptom
Abnormal
Printing.
Condition
Cause
A vertical line is
not aligned.
Bi-directional
alignment is
not adjusted.
Perform Bi-D
adjustment.
Refer to
Chapter 5
“Adjustment”.
Head angle is
not correct.
Perform head
angle
adjustment.
Refer to
Chapter 5
“Adjustment”.
Platen gap is
not right.
Perform Platen
Gap adjustment.
Refer to
Chapter 5
“Adjustment”.
Dot shooting
direction is
tilted because
head surface
is not clean.
Perform cleaning
several times
and check the
print quality.
Perform the
cleaning
operation.
I/C is
defective.
Install a new I/C
and perform self- Replace I/C.
test.
Head unit is
defective.
Head unit is
broken.
White line
appears in the
image data.
Print
irregularity
appears along
with CR
scanning
direction.
Troubleshooting
-Abnormal CR
guide surface
-Top frame
CR holder rail
is deformed.
Check Point
Solution
Replace the
head unit.
-Check CR guide
surface.
-Check the form
of top frame CR
holder rail.
Table 3-7. Printer Mechanism Troubleshooting (continued)
Symptom
Condition
Paper is not
fed.
Cause
Check Point
Solution
Friction of the
LD roller.
Load paper and
check if the LD
roller revolves
smooth when
picking up paper.
Clean the LD
roller with the
cleaning
sheet. Replace
the LD roller if
it does not
recover.
Abnormal
operation of
the hopper.
Check the
movement of the
ASF hopper
visually.
Replace the
ASF.
Malfunction
of ASF drive
switching
function.
Insert DE lever to
the left side of
the CR shaft and
check if drive
from PF roller is
transmitted to
the ASF.
Replace the
DE lever and
ASF drive
switching
gear.
Friction of PF
roller
Check if the PF
roller slips
during the paper
feeding.
Clean the PF
roller by the
cleaning
sheet. Replace
the PF roller if
the problem is
not solved.
PE sensor is
defective.
-Check if PE
sensor lever
moves smoothly.
-Check if the
assembly with
the right paper
guide is made
correct and check
if there is any
foreign
substances.
-Replace the
PE sensor
assembly.
-Re-assemble
each part and
remove
foreign
substances.
Abnormal
Paper
Feeding.
Replace the
CR guide shaft
and top frame.
Page heading
position is
wrong.
Unit Repair (Printer Mechanism)
64
EPSON Stylus COLOR 670
Revision A
Table 3-7. Printer Mechanism Troubleshooting (continued)
Symptom
Condition
Printer
Fatal error
stops
appears.
during
initialization
Troubleshooting
Cause
Check Point
Solution
ASF sensor is
defective.
Check the signal
level of the ASF
sensor.
Replace ASF
sensor.
HP sensor is
defective.
Check the signal
level of the HP
sensor.
Replace HP
sensor.
CR motor is
defective.
Check the CR
motor cable is
connected
properly.
Replace the
CR motor if
there is no
problem in the
cable
connection.
PF motor is
defective.
Check if the PF
motor cable is
connected
properly.
Replace the PF
motor if there
is no problem
in the cable
connection.
Unit Repair (Printer Mechanism)
65
CHAPTER
4
DISASSEMBLY AND ASSEMBLY
EPSON Stylus COLOR 670
Revision A
4.1 Overview
This section describes procedures for disassembling the main components of
EPSON Stylus COLOR 670. Unless otherwise specified, disassembly units or
components can be reassembled by reversing the disassembly procedure.
Things, if not strictly observed, could result in injury or loss of life are
described under the heading “Warning”. Precautions for any disassembly or
assembly procedures are described under the heading “Caution”. Chips for
disassembling procedures are described under the heading “Check Point”.
Any adjustment required after disassembling the units are described under
the heading “Adjustment Required”. When you have to remove any units or
parts that are not described in this chapter, refer to the exploded diagrams in
the appendix.
Read precautions below before starting.
Disassembly and Assembly
Overview
67
EPSON Stylus COLOR 670
Revision A
4.1.1 Precautions
A lithium battery is installed on the MAIN Board of this printer for backing up
the system clock. Mishandling the battery may cause explosion or short. Read
carefully the following precautions.
C A U T IO N
W A R N IN G
Risque d’explosion si la pile est remplacée incorrectment.
Ne remplacer que par une pile du même type ou d’un type
équivalent recommandé par le fabricant. Eliminer les piles
déchargées selon les lois et les règles de sécurité en
vigueur.
n Disconnect the power cable before disassembling or
assembling the printer.
n Wear protective goggles to protect your eyes from ink. If
n
n
n
ink gets in your eye, flush the eye with fresh water and see
a doctor immediately.
If ink comes into contact with your skin, wash it off with
soap and water. If irritation occurs, contact a physician.
A lithium battery is installed on the main board of this
printer. Be sure to observe the following instructions when
serving the battery:
n Keep the battery away from any metal or other batteries so
that electrodes of the opposite polarity do not come in
contact with each other.
n Do not heat the battery or put it near fire.
n Do not solder on any part of the battery. (Doing so may
result in leakage of electrolyte from the battery, burning or
explosion. The leakage may affect other devices close to
the battery.)
n Do not charge the battery. (An explosion may be generated
inside the battery, and cause burning or explosion.)
n Do not dismantle the battery. (The gas inside the battery
may hurt your throat. Leakage, burning or explosion may
also be resulted.)
n Do not install the battery in the wrong direction. (This may
cause burning or explosion.)
Danger of explosion if the battery is incorrectly replaced.
Replace only with the same or equivalent type
recommended by the manufacture. Dispose the used
batteries according to government’s law and regulations.
Disassembly and Assembly
C A U T IO N
Overview
n Never remove the ink cartridge from the carriage unless
n
n
n
n
n
n
this manual specifies to do so.
When transporting the printer after installing the ink
cartridge, be sure to pack the printer for transportation
without removing the ink cartridge.
Use only recommended tools for disassembling,
assembling or adjusting the printer.
Apply lubricants and adhesives as specified. (See Chapter
6 for details.)
Make the specified adjustments when you disassemble the
printer.
(See Chapter 5 for details.)
When assembling, if an ink cartridge is removed and needs
to be installed again, be sure to install a new ink cartridge
because of the following reasons;
n Once the ink cartridge mounted on the printer is removed,
air comes in and creates bubbles in the cartridge. These
bubbles clog ink path and cause printing malfunction.
n If an ink cartridge in use is removed and is reinstalled, ink
quantity will not be detected correctly since the counter to
check ink consumption is cleared.
Because of the reasons above, make sure to return the
printer to the user with a new ink cartridge installed.
68
EPSON Stylus COLOR 670
Revision A
4.1.2 Tools
Use only specified tools to avoid damaging the printer.
Table 4-1. Required Tools
Name
Supplier
Parts No.
Phillips Screw Driver
(No.1)
EPSON
B743800100
Phillips Screw Driver
(No.2)
EPSON
B743800200
Nipper
EPSON
B740500100
Tweezers
EPSON
B741000100
Thickness Gauge
EPSON
B776702201
Disassembly and Assembly
Overview
69
EPSON Stylus COLOR 670
Revision A
4.1.3 Work Completion Check
Table 4-2. Check List (continued)
If any service is made to the printer, use the checklist shown below to confirm
all works are completed properly and the printer is ready to be returned to the
user.
Classification
Adjustment
Item
Specified
Adjustment
Table 4-2. Check List
Classification
Item
Self-test
On-line Test
Printhead
Carriage
Mechanism
Check Point
Status
o
Is the operation normal?
o
o
Is the printing successful?
o
o
Is ink discharged normally
from all the nozzles?
o
o
Does it move smoothly?
o
Is there any abnormal noise o
during its operation?
o
o
Is there any dirt or foreign
objects on the CR Guide
o
Shaft?
Main Unit
Is the CR Motor at the
correct temperature?
(Not too heated?)
Paper Feeding
Mechanism
Is paper advanced
smoothly?
• No paper jamming?
• No paper skew?
• No multiple feeding?
• No abnormal noise?
Disassembly and Assembly
Specified
Lubrication
Checked
Not necessary
Function
Checked
ROM Version
Not necessary
Ink Cartridge
Checked
Not necessary
Packing
Protective
Materials
Checked
Not necessary
Checked
Not necessary
Others
Checked
Attachments,
Accessories
Status
o
o
Are all the lubrication made o
at the specified points?
o
Is the amount of lubrication o
correct?
o
o
Version:
o
o
Are the ink cartridges
installed correctly?
o
Have all relevant protective o
materials been attached to o
Are all the adjustment done
correctly?
the printer?
Have all the relevant items
been included in the
package?
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
o Checked
o Not necessary
Not necessary
o Checked
o Not necessary
o Checked
o Not necessary
o
o
Is the paper path free of any o
obstructions?
o
Is the PF Motor at correct
temperature?
Lubrication
Check Point
Checked
Not necessary
Checked
Not necessary
Overview
70
EPSON Stylus COLOR 670
Revision A
4.2 Disassembly
The flowchart below shows step-by-step disassembly procedures. When
disassembling each unit, refer to the page number shown in the figure.
Housing
Removal
Page 72
Circuit Board Assy.
Removal
Page 73
Control Panel
Removal
Page 75
Ink Absorber Tray Assy.
Removal
ASF Assy.
Removal
Page 85
Page 76
LD Roller Assy.
Removal
Page 87
Printer Mechanism
Disassembly
Page 77
LD Roller Assy.
Disassembly
Page 92
Printhead
Removal
Page 77
Pump/Cap Assy.
Removal
Page 80
CR Motor Assy.
Removal
Page 82
PF Motor Assy.
Removal
Page 83
CR Assy.
Removal
Page 93
PE Sensor Assy.
Removal
Page 95
PF Roller Assy.
Removal
Page 96
CR HP Sensor
Removal
Page 98
Figure 4-1. Flowchart
Disassembly and Assembly
Disassembly
71
EPSON Stylus COLOR 670
Revision A
4.2.1 Housing Removal
Since this printer has no lower Housing, the Printer Mechanism is exposed
just by removing the Housing.
1.
Open the Printer Cover and set the PG Adjust Lever to (+) position.
2.
Remove 4 screws and remove the Housing.
Upper Housing
C H E C K
P O IN T
When removing the Housing, be sure to keep the Housing
out of carriage: Pull the Housing toward the printer front
side and lift it upward.
When installing the Housing, be careful not to pinch the cable
with the screw at the rear side of the Housing.
Make sure the Head FFC is set properly inside the rail on the
back of the Housing.
Figure 4-2. Housing Removal
Disassembly and Assembly
Disassembly
72
EPSON Stylus COLOR 670
Revision A
4.2.2 Circuit Board Assembly Removal
6.
1.
Remove the Housing. (“Housing Removal” on page 72)
2.
Remove 5 screws securing the Printer Mechanism to the M/B Shield Plate.
When removing each board unit from M/B Shield Plate, remove screws
securing each board (C301MAIN Board: 10 screws, C301PSB/PSE: 4
screws) and remove the boards respectively.
NOTE: When removing each board separately, release the lock of the
connector CN10 and pull the cable out of CN10.
.
Screws
MAIN Board
(C301MAIN)
Cable Holders
Power Supply Board
(C301 PSB/PSE)
M/B Shield Plate
Screw
M/B Shield Plate
Figure 4-3. M/B Shield Plate Removal
3.
Slightly pull out the M/B Shield Plate and remove the cable holder
installed on the M/B Shield Plate.
4.
Disconnect all the cables from the connectors on the C301MAIN Board.
5.
Remove the Circuit Board Assembly from the Printer Mechanism.
Figure 4-4. C301MAIN / C301PSB/PSE Removal
Disassembly and Assembly
Disassembly
73
EPSON Stylus COLOR 670
A D J U S T M E N T
R E Q U IR E D
C H E C K
P O IN T
Revision A
After replacing C301MAIN Board, perform the following
adjustments.
n Head ID Input (See “Head ID Input” on page 107)
n Bi-D Adjustment (See “Bi-D Adjustment” on
page 112)
n USB ID Input (See “USB ID Input” on page 115)
When the MAIN Board is replaced, the value of Ink Cartridge
Consumption Counter and the Waste Pad Counter is reset.
So, replace the following parts as well.
(Refer to “Special Setting Mode” on page 26 and “Protection
Counter Indication / Reset” on page 119.)
n Ink Cartridge
n Waste Ink Pad
Disassembly and Assembly
Disassembly
74
EPSON Stylus COLOR 670
Revision A
4.2.3 Control Panel Removal
Panel Shield Plate
1.
Remove the Housing. (See“Housing Removal” on page 72)
2.
Remove 2 screws securing the Control Panel, then remove the Control
Panel from the Printer Mechanism.
3.
Remove the screw securing the Left Housing Panel to the Printer
Mechanism.
4.
Remove 2 screws securing the Panel Board Assembly to the Printer
Mechanism, then remove C209PNL Board from the Panel Assembly.
5.
Remove FFC from the connector on the C209PNL Board.
Panel Board
Assembly
Panel Board Assy Securing Screw
Panel Assembly
C H E C K
P O IN T
By removing the Control Panel, the Stacker Assembly can be
also detached from the Printer Mechanism, since it is held by
the Control Panel Assembly.
Panel Assembly
Securing Screw
Stacker Assembly
Left Housing Panel
Left Housing Panel Securing Screw
Figure 4-5. Control Panel Removal
Disassembly and Assembly
Disassembly
75
EPSON Stylus COLOR 670
Revision A
4.2.4 Ink Absorber Tray Assembly (Waste Ink Pad)
Removal
1.
Remove the Housing.(See “Housing Removal” on page 72)
2.
Remove the Control Panel. (See “Control Panel Removal” on page 75)
3.
Remove one screw securing the Ink Absorber Tray Assembly to the right
side of the Printer Mechanism.
Waste Ink Pad Assembly
Securing Screw
Remove the Spacer Tray securing the Ink Absorber Tray Assembly at the left
side of the Printer Mechanism and remove the Ink Absorber Tray Assembly
by pulling it downward.
C A U T IO N
Be sure to reset the Waste Ink Counter, when replacing the
Ink Absorber Tray Assembly or Ink Absorber (Ink Pad) inside.
The Waste Ink Counter is reset by the special setting mode of
the panel operation or by the adjustment program.
(See “Special Setting Mode” on page 26, “Protection
Counter Indication / Reset” on page 119.)
Waste Ink Pad Assembly
Spacer Tray
Figure 4-6. Ink Absorber Tray Assembly Removal
Disassembly and Assembly
Disassembly
76
EPSON Stylus COLOR 670
Revision A
4.2.5 Printer Mechanism Disassembly
Printhead
Head Fastener
4.2.5.1 Printhead Removal
1.
Remove the Housing.(See “Housing Removal” on page 72)
2.
Rotate Combination Gear, 6, 34.4 toward the front side of the printer and
release the CR Lock Lever from the CR Assembly. Then, move the CR
Assembly to the left side.
3.
Remove Black and Color Ink Cartridges.
4.
Remove Black I/C Cover and Color I/C Cover from the CR Assembly.
5.
Remove the Torsion Spring, 49 from the CR Assembly and remove 1
screw securing Head Fastener from the right side of the CR Assembly.
6.
Remove two hooks securing the Head FFC Holder at the back side o f the
CR unit and remove the Head FFC holder.
7.
Lift the Printhead upward and remove it from CR Assembly. Carefully
remove 2 Head FFCs from the connector on the Printhead Board.
Torsion Spring 49
Figure 4-7. Printhead Removal
Disassembly and Assembly
Disassembly
77
EPSON Stylus COLOR 670
C A U T IO N
Revision A
n When removing the Head FFCs from the Printhead Board,
do not pull two FFCs together. As shown in the figure
below, one of the Head FFCs is inserted to the connector
on the Head Board horizontally and if you pull this FFC
upward, FFC may be broken. (See Figure 4-8, "Head FFC
Removal")
Figure 4-8. Head FFC Removal
n When removing the securing screw of the Head Fastener,
n
be sure to hold the CR Assembly by hand. If you do not
hold CR Assembly when loosing or tightening the screw,
the Top Frame may be deformed, resulting in low quality
print.
When you assemble the Head FFC holder, be sure that the
two hooks of the Head FFC holder and the one joint
portion are secured to the CR unit. See Figure 4-9.
Viewed from front
Viewed from back
two hooks for Head FFC
Head FFC Holder Joint portion
holder
Figure 4-9. Head FFC Holder
Disassembly and Assembly
Disassembly
78
EPSON Stylus COLOR 670
C H E C K
P O IN T
Revision A
n Be sure that the Head Grounding Plate is installed to the
n
carriage correctly. (There are 2 position marking pins on
the carriage.)
After installing the printhead to the carriage, make sure
that the position marking pin at the carriage side is
correctly located into the cutoff of the printhead.
C H E C K
P O IN T
n
n
n
This part
should contact
with the CR
Bushing.
This protrusion
must be in the U
groove of the
printhead.
Head
Grounding
Plate
Printhead
A D J U S T M E N T
R E Q U IR E D
These protrusions of CR
must be in the holes of the
head grounding plate.
Pinthead
Top View
n Install a new cartridge before sending back the printer to
the user, since the ink cartridge once taken out can not
be used again.
Installation of I/C must be carried out by I/C replacement
sequence. Otherwise, ink may not be ejected properly.
When you return the printer to the user, pack the printer
with ink cartridges installed.
When you return the printer to the user, make sure CR
Lock Lever is set properly and then pack the printer.
Perform the following adjustment after replacing the
printhead in the order below;
1. Ink Initial Charge (See “Initial Ink Charge” on page 118)
2. Head ID Input (See “Head ID Input” on page 107)
3. Head Angular Adjustment (See “Head Angular
Adjustment” on page 109)
CR Assembly
Printhead
Printhead
Printhead Back View
Figure 4-10. Printhead Installation
Disassembly and Assembly
Disassembly
79
EPSON Stylus COLOR 670
Revision A
4.2.5.2 Pump Assembly / Cap Assembly Removal
Loosen 2 screws at the R/L
Frame and lift up the Paper
Eject Frame Assembly.
1.
Remove the Housing. (See “Housing Removal” on page 72)
2.
Remove the Control Panel. (See “Control Panel Removal” on page 75)
3.
Remove the Ink Absorber Tray Assembly (See “Ink Absorber Tray
Assembly (Waste Ink Pad) Removal” on page 76)
4.
Remove screws securing the Front Frame. (See Figure 4-17.)
5.
Remove screws securing the Paper Eject Frame Assembly to the R/L
Frame. (See Figure 4-17.)
6.
Shift the CR Assembly to the left end of the CR Shaft and remove it from
the right side of the Paper Eject Frame Assembly towards the front of the
printer. Then shift CR Assembly to the center of the CR Shaft and carefully
remove the left side of the Paper Eject Frame Assembly towards the front
of the printer.
7.
Remove 3 hooks securing the Cap Assembly at the right side of the frame.
Remove 2 protrusions securing the Cap Assembly to the Middle Frame
and release the engagement with the frame by lifting up the right side of
Cap Assembly.
8.
Carefully pull out the Cap Assembly toward the top of the Printer
Mechanism. (However, Cap Assembly is still connected to the “Pump
Assembly” by the ink tube.)
9.
Remove the Ink Tube from the bottom of the Cap Assembly.
Unhook 3 hooks and
remove the Right Frame
Assembly.
Pump Assembly
Cap Assembly
Remove 1 hook from the
bottom of the Printer
Mechanism and pull out 2
protrusions from the Middle
Frame.
Figure 4-11. Cap Assembly and Pump Assembly Removal
10. Stand up the Printer Mechanism so that you can see the bottom of the
Printer Mechanism.
11. Remove 2 screws securing the Pump Assembly to the frame and remove
the Pump Assembly.
.
C A U T IO N
n Do not touch the rubber part and sponge part of the cap.
n When handling the Head Cleaner installed at Pump
Assembly, be careful for the following points.
C A U T IO N
Be careful when removing the Pump Assembly, because the
spring and gear of the Pump Assembly may pop out during the
disassembly.
n Do not touch the Head Cleaner by bare hand. Use globe
and tweezers.
n Install Head Cleaner as its black rubber side faces to the
right side of the frame.
Disassembly and Assembly
Disassembly
80
EPSON Stylus COLOR 670
C H E C K
P O IN T
Revision A
n Since the spring is included among the gears in the
n
Pump Assembly, be careful that the parts do not pop out
during disassembly and assembly. (Refer to the Figure
4-12 below.)
When assembling, be careful not to crush nor leave any
stress on the ink tube connecting the Pump Assembly
and the Cap Assembly. (Refer to the Figure 4-13.)
After installing the Pump Assembly, rotate the
Combination Gear, 6, 34.4 and check if the Head Cleaner
moves back and forth. (Perform this check while holding
the Cap Assembly to the right of the frame.)
Ink Tube Routing From
Cap Assembly
OK
(ink tube does behind of
the cap assembly)
Viewed from front
Head Cleaner
NG
(The ink tube is on the parts
of the cap assembly)
Figure 4-13. Ink Tube Routing
Pump Components
Assembly Order
Figure 4-12. Components of Pump Assembly
Disassembly and Assembly
Disassembly
81
EPSON Stylus COLOR 670
Revision A
4.2.5.3 CR Motor Assembly Removal
1.
Remove the Housing.(See “Housing Removal” on page 72)
2.
Rotate Combination Gear, 6, 34.4 toward the front of the printer and
disengage the CR Lock Lever. Then, manually move the CR Assembly to
the center of the platen.
3.
Push the Driven Pulley Holder toward the interior of the Left Frame and
loosen the Timing Belt. Remove the Timing Belt from the CR Motor Pinion
Gear or pull the Driven Pulley Assembly diagonally from the Driven Pulley
Holder to the top (refer to the arrow in the figure below.).
Compression Spring 19.6
Top Frame
Driven Pulley Assembly
Timing Belt
To the Exterior
of Side Frame
The projections of motor assembly
must locate inside the holes.
Figure 4-15. CR Motor Assembly Removal
To the Interior of
Side Frame
Driven Pulley
Holder
A D J U S T M E N T
R E Q U IR E D
After replacing CR Motor Assembly, perform
the Bi-D adjustment. (See “Bi-D Adjustment” on page 112)
Figure 4-14. Timing Belt Removal
4.
Remove 2 screws securing the CR Motor, and remove CR Motor
Assembly.
C H E C K
P O IN T
When installing CR Motor Assembly, be sure that 2
projections of the Motor Bracket are inserted to the position
marking holes of the frame.
Disassembly and Assembly
Disassembly
82
EPSON Stylus COLOR 670
Revision A
4.2.5.4 PF Motor Assembly Removal
Paper Eject Frame Securing Screws (2 screws)
1.
Remove the Housing. (See “Housing Removal” on page 72)
2.
Remove the Ink Absorber Tray Assembly. (See “Ink Absorber Tray
Assembly (Waste Ink Pad) Removal” on page 76)
3.
Remove the Plastic C Ring with tweezers and remove the Combination
Gear 6, 34.4.
Combination Gear 6, 34.4
Front Frame Securing Screws (3 Screws)
Figure 4-17. Front Frame and Paper Eject Frame Removal
C Ring 6.1 x 0.5 x 9.0
6.
Release 2 hooks attaching the Front Paper Guide to the Paper Eject Roller
and remove the Front Paper Guide to the front side of the printer. (Refer
to Figure 4-18.)
7.
Release the hook of the Bushing 6 securing the Paper Eject Roller to the
Printer Mechanism, rotate the Bushing 6 to the top and remove the Paper
Eject Roller. (Refer to Figure 4-18.)
Figure 4-16. Combination Gear 6, 34.4 Removal
4.
Remove 3 screws and remove the Front Frame from the Printer
Mechanism. (Refer to Figure 4-17.)
5.
Remove 2 screws and remove the Paper Eject Frame from the Printer
Mechanism. (Refer to Figure 4-17.) When removing the Paper Eject Frame
from the Printer Mechanism, shift the CR Unit manually to the left side of
the CR Shaft and remove it from the right side of the Paper Eject Frame
towards the front side of the printer. Then move the CR Unit to the center
of the CR Shaft and remove the left side of the Paper Eject Frame towards
the front side of the printer. (Refer to Figure 4-17.)
Disassembly and Assembly
Disassembly
83
EPSON Stylus COLOR 670
Revision A
C H E C K
P O IN T
Front Paper Guide
n When removing the PF Motor Assembly, first slightly
n
pull out the PF Motor Assembly from the frame and slide
the Motor Shaft to a larger cutoff of the frame and
remove it.
Be careful for the routing direction of the cable from the
PF Motor Assembly. (Refer to Figure 4-20.)
PF Motor
(Behind the Frame)
Bushing 6
PF Motor Pinion Shaft
Paper Eject Roller
Front Paper Guide Securing Hook
Figure 4-18. Front Paper Guide and Paper Eject Roller Removal
8.
Remove 2 screws securing the PF motor from the inside of the Left Frame
and shift the PF Motor Assembly to the front side of the printer to remove
it. (Refer to Figure 4-19.)
C a b le D ir e c tio n
(Printer rear side)
Small Hole
Viewed from inside of the Left Frame
Large Hole
Figure 4-20. PF Motor Assembly Installation
front side
PF Motor screws
Figure 4-19. 2 Screws Securing the PF Motor
Disassembly and Assembly
Disassembly
84
EPSON Stylus COLOR 670
Revision A
4.2.5.5 ASF Assembly Removal
5.
1.
Remove the Housing. (See “Housing Removal” on page 72)
2.
Release the hook and remove the Spur Gear 34 from the Roller Shaft of
the ASF Assembly.
Shift the ASF Assembly to the right (seen from the back side of the
printer) and while lifting the Sub Paper Support, remove the ASF
Assembly to the back side of the printer.
Sub Paper Support
Spur Gear 34 Securing Hook
Spur Gear 34
Shift the ASF to the right
Cable Hook
Figure 4-23. ASF Assembly Removal
Figure 4-21. Spur Gear 34
3.
Remove the cable from the Cable Hook of the ASF Assembly.
(The Cable Hook is located at the right side seen from the back side of the
printer.)
4.
Remove 1 screw (with washer) securing the ASF Assembly to the Printer
Mechanism and ASF securing screw.
ASF Securing Screw
Securing Screw with Washer
Figure 4-22. ASF Securing Screw Removal
Disassembly and Assembly
Disassembly
85
EPSON Stylus COLOR 670
C H E C K
P O IN T
Revision A
n When installing the ASF Assembly, make sure that the
n
protrusion at the right side of ASF Assembly is firmly
inserted to the cutout of the Middle Frame.
Use the ASF Assembly securing screws at the specified
positions below. (The position is seen from the back side
of the printer.)
*ASF right side: ASF Securing Screw
*ASF left side: Screw with Washer
(Refer to Figure 4-22.)
C A U T IO N
n When installing the ASF Assembly, be careful not to
n
pinch any motor or sensor cables under the ASF.
Especially if the cables from the motor are pinched, there
is a danger of short-circuit and possibly causes
hazardous problem such as over-heating or burning of
components.
Head FFC goes under the ASF. When installing the ASF,
be careful not to damage FFC. (Refer to Figure 4-25.)
ASF Assembly
ASF Left Protrusion
Installation Point
Head FFC
Figure 4-24. ASF Assembly Installation Point
Disassembly and Assembly
Figure 4-25. Head FFC Routing
Disassembly
86
EPSON Stylus COLOR 670
Revision A
4.2.5.6 ASF LD Roller Assembly Removal
4.
1.
Remove the ASF Assembly. (See “ASF Assembly Removal” on page 85)
2.
Remove the ASF LD Roller Shaft Fixing Bushing and remove the Right
Hopper Release Lever.
Push the LD Roller Shaft to the left and remove the ASF HP Detection
Wheel from the end of the shaft. (Refer to Figure 4-27.)
Left ASF LD Roller
Fixing Bushing
ASF HP Detection Wheel
Right Hopper Release Lever
Figure 4-27. ASF LD Roller Fixing Bushing
and ASF HP Detection Wheel
LD Roller Shaft Fixing Bushing
Figure 4-26. LD Roller Shaft Fixing Bushing Removal
3.
Shift the Left ASF LD Assembly on the left to the center and remove the
Left ASF LD Roller Shaft Fixing Bushing (white). (Refer to Figure 4-27.)
Disassembly and Assembly
Disassembly
87
EPSON Stylus COLOR 670
5.
Revision A
Release the protrusion of the ASF Frame from the ASF Hopper Assembly
installation point at the upper left.
6.
Align the right cam part of the ASF Hopper Assembly to the cutoff
(rectangle) of the ASF Frame assembly. Lift the left side of the ASF
Hopper Assembly and carefully remove the ASF Hopper Assembly.
ASF Hopper Upper Left
Installation Hole
ASF Frame
Right Hopper Cam Part
ASF Hopper Assembly
ASF Frame Assembly Cutoff
Figure 4-29. ASF Hopper Assembly Cam Part Aligning Point
Figure 4-28. ASF Hopper Assembly Removal
C A U T IO N
Disassembly and Assembly
When removing ASF Hopper Assembly from the ASF Frame
Assembly, be careful not to damage the Compression Spring
1.961 of the LD Roller Assembly and transparent plastic film.
Refer to Figure 4-35.
7.
Carefully remove the Compression Spring 1.961. (Refer to Figure 4-35)
from both sides between the ASF Hopper Assembly and the R/L ASF LD
Roller Assembly.
8.
Shift the ASF LD Roller Shaft to the left and remove the LD Roller Shaft
from the ASF LD Roller Shaft hole of the right side of the ASF Frame.
9.
Remove the LD Roller Assembly from the LD Roller Shaft.
Disassembly
88
EPSON Stylus COLOR 670
Revision A
The following is the ASF Assembly exploded diagram.
C H E C K
P O IN T
Hopper Assembly
n During disassembly and assembly of the ASF Hopper
n
n
n
Brake Lever
Torsion Spring 41.2
n
Assembly, do not let the grease on the cam parts touch
other parts. Wipe off any grease smeared on other parts.
Be careful of the direction of the Hopper Release Lever
when installing it. (Refer to Figure 4-31.)
Make sure the LD Roller Assembly is installed firmly to the
rail of the ASF Frame. (Refer to Figure 4-32.)
Make sure the Left Frame of the left LD Roller Assembly is
set to the cutoff of the Paper Edge Guide. (Refer to Figure
4-33.)
When installing the right and left LD Roller Fixing
Bushings, make sure the bushings are firmly installed and
do not slip off. Also, make sure the Black LD Roller
Assembly goes on the right side of the shaft. (Refer to
Figure 4-31 below.)
ASF Frame
Left Hopper Lever
Right Hopper Release Lever
Right Hopper
Release Lever
(White)
LD Roller Assembly
(Black)
Right LD Roller
Fixing Bushing
Figure 4-31. Hopper Release Lever Installation Direction
LD Roller Shaft
Figure 4-30. ASF Disassembly
Disassembly and Assembly
Disassembly
89
EPSON Stylus COLOR 670
Revision A
C H E C K
P O IN T
n When installing the Right LD Roller Assembly to the ASF
n
Rail inside the ASF Frame
Frame, make sure the Right LD Roller Assembly is locked
by the hook on the back of the right side of the ASF
Frame. (Refer to Figure 4-34.)
Before installing the ASF Hopper Assembly to the LD
Roller Assembly, set the Compression Spring 1.961 to the
spring installation hook of the LD Assembly temporarily.
After assembling, move the LD Roller Assembly to the
hole on the back of the ASF Frame and release the
Compression Spring 1.961 from the Temporary Fixing
Hook through the hole. (Refer to Figure 4-35.)
Figure 4-32. LD Roller Assembly Installation Point
Right LD Roller
Assy. Fixing Hook
Figure 4-34. Right LD Roller Assembly Fixing Hook Position
Installation Point of the
Left LD Roller Assembly
and Edge Guide
Figure 4-33. Left LD Roller Assembly Installation Point
Disassembly and Assembly
Disassembly
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EPSON Stylus COLOR 670
Revision A
Screw Fixing Hooks
Compression Spring 1.961
Figure 4-35. Compression Spring 1.961 Temporary Fixing Position
Disassembly and Assembly
Disassembly
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EPSON Stylus COLOR 670
Revision A
4.2.5.7 LD Roller Assembly Disassembly
1.
Remove the ASF Assembly. (See “ASF Assembly Removal” on page 85)
2.
Remove the LD Roller Assembly. (See “ASF LD Roller Assembly
Removal” on page 87)
3.
Release 2 hooks securing the LD Roller Cover to the LD Roller Assembly.
4.
Remove 2 hooks securing the LD Roller Assembly to the frame around the
shaft hole of the LD Roller Assembly.
5.
Remove the LD Roller Assembly.
LD Roller Cover
(Right and Left)
+
Paper Feed Holder
Sheet
Compression Spring 1.961
LD Roller Assembly
(Right and Left)
Paper Feed Assembly
(Right and Left)
LD Roller Cover
During assembly, set the
Compression Spring 1.961 to the
spring installation hook of the LD
Assembly and hang the bent part
of the spring on the hook.
LD Roller Assembly
Fixing Hooks
Figure 4-37. Disassembly of LD Roller Assembly
Figure 4-36. LD Roller Assembly Removal Hook Position
C H E C K
P O IN T
n Before installing the ASF Hopper Assembly to the LD
n
Disassembly and Assembly
Disassembly
Roller Assembly, set the Compression Spring 1.961 to
the spring installation hook of the LD Assembly and
hang the bent part of the spring on the hook. After
assembling the unit, do not forget to unhook the springs
by rotating the spring from the holes located at the back
of the ASF Assembly.
Do not touch the surface of the roller of the LD Roller
Assembly.
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EPSON Stylus COLOR 670
Revision A
4.2.5.8 CR Assembly Removal
5.
Move the Driven Pulley Holder to the right and remove it from the frame.
1.
Remove the Housing. (See “Housing Removal” on page 72)
6.
2.
Push the Driven Pulley Holder to the right (seen from the front side of the
printer) to loosen the Timing Belt and detach the Timing Belt from the CR
Motor Pinion Gear.
Release 2 PG Lever securing hooks from the Right Frame and remove the
PG Lever.
Driven Pulley Holder
PG Lever
CR Timing Belt
PG Lever Fixing Hook
CR Motor Pinion Gear
Figure 4-40. PG Lever Hook Release
Figure 4-38. CR Timing Belt Removal
3.
Take out the Compression Spring 19.6 from the Driven Pulley Holder.
4.
Remove the Driven Pulley Assembly with the Timing Belt from the Driven
Pulley Holder. (Pull the Driven Pulley Assembly diagonally to the upper
left.)
Compression
Spring 19.6
7.
Release1 hook of Sub PG Lever and remove the Sub PG Lever and Spring
Washer from the right end of the CR Guide Shaft.
8.
Remove 1 screw securing the Right Parallelism Adjust Bushing to the
Right Frame.
Right Parallelism Adjust
Bushing Securing Screw
CR Timing Belt
Right Parallelism
Adjust Bushing
Spring Washer
Driven Pulley Assembly
Sub PG Lever
Figure 4-41. Sub PG Lever and Spring Washer Removal
Figure 4-39. Driven Pulley Assembly Removal
Disassembly and Assembly
Disassembly
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EPSON Stylus COLOR 670
9.
Revision A
Rotate the Right Parallelism Adjust Bushing to the front side of the printer
to align the cutoff of the frame and remove it.
A D J U S T M E N T
R E Q U IR E D
Right Parallelism
Adjust Bushing
Perform following adjustments after removing the Carriage
Assembly.
n PG Adjustment (See “PG Adjustment” on page 101)
n Bi-D Adjustment (See “Bi-D Adjustment” on page 112)
Also, when you have replaced the Carriage Assembly,
perform Head Angular Adjustment (See “Head Angular
Adjustment” on page 109) in addition to the adjustment
items described above.
CR Guide Shaft
Frame Right Cutoffs
Figure 4-42. Right Parallelism Adjust Bushing Removal
10. Shift the CR Guide Shaft to the right and remove the left end of the CR
Guide Shaft from the Left Parallelism Adjust Bushing. Remove the CR
Assembly with CR Guide Shaft.
C H E C K
P O IN T
n When installing the Spring Washer, convex side should
n
n
face to the Right Parallelism Adjust Bushing. Be careful
not to install it in wrong direction. (See Figure 4-41.)
When installing the CR Assembly to the CR Guide Shaft,
make sure the Oil Pad is set to the specified position of
the CR Assembly.
When the Oil Pad is especially dirty, replace the Oil Pad
with a new one which is lubricated with the specified
amount of oil.
Disassembly and Assembly
Disassembly
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EPSON Stylus COLOR 670
Revision A
4.2.5.9 PE Sensor Assembly Removal
1.
Remove the Housing. (See “Housing Removal” on page 72)
2.
Remove the ASF Assembly. (See “ASF Assembly Removal” on page 85)
3.
Release 2 PE Sensor Assembly Securing Hooks from the Top Frame
Cutoffs and remove PE Sensor Assembly by sliding it upward.
C H E C K
P O IN T
When installing the PE Sensor Assembly, make sure that the
sensor lever is correctly inserted into the hole of Paper Guide
Assembly.
After releasing two hooks, remove the PF
Sensor Assembly, sliding it upward.
(From back side of
the frame)
Right Paper Guide Top Assembly
PE Sensor Lever Head
PE Sensor Holder
This side should
be installed on the
frame.
PE Sensor Board
Assembly
Figure 4-44. PE Sensor Lever Head Setting Position
PE Sensor Lever
Torsion Spring 0.22
Figure 4-43. PE Sensor Assembly Removal
Disassembly and Assembly
Disassembly
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EPSON Stylus COLOR 670
Revision A
4.2.5.10 PF Roller Assembly Removal
1.
Remove the Housing.(See “Housing Removal” on page 72)
2.
Remove the ASF Assembly. (See “ASF Assembly Removal” on page 85)
3.
Remove the Torsion Spring117.6 from the rear side of the Top Frame and
remove the Upper Paper Guide Assembly toward the rear side of the
printer.
When removing the Upper Right Paper Guide Assembly, be careful for PE
Sensor Lever Head and remove it toward the front side of the printer.
Upper Right Paper
Guide Assembly
Paper Eject Frame
Fixing Screws
Spring Holders
Front Frame Fixing Screws
Figure 4-46. Front Frame and Paper Eject Frame Removal
6.
Front Side of the Printer
Release 2 hooks securing the Front Paper Guide to the Paper Eject Roller
and remove it to the front side of the printer.
Rear Side of the Printer
Figure 4-45. Paper Guide Assembly Removal
4.
Remove 3 screws and remove the Front Frame from the Printer
Mechanism. (See Figure 4-46.)
5.
Remove 2 screws to remove the Paper Eject Frame from the Printer
Mechanism. When removing the Paper Eject Frame from the Printer
Mechanism, shift the CR Unit to the CR Shaft left direction by hand and
remove it from the Paper Eject Frame toward the front side of the Printer
Mechanism. Then shift the CR Unit to the center of the CR Shaft and
remove the left side of the Paper Eject Frame toward the front side of the
printer. (See Figure 4-46.)
Front Paper Guide
Front Paper Guide
Securing Hooks
Figure 4-47. Front Paper Guide Removal
Disassembly and Assembly
Disassembly
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EPSON Stylus COLOR 670
7.
Revision A
Release hooks securing the Left Bushing 12 to the Left Frame and rotate
the Left Bushing 12 to the front side of the printer. Align the protrusion of
the Left Bushing 12 and the cutoffs of the frame. Shift the bushing with PF
roller to the left and remove the PF roller.
Right Upper Paper Guide
Left Bushing 12
Front Side of the Printer
Shift this toward the left.
Figure 4-49. Right Upper Paper Guide Installation
Figure 4-48. Left Bushing 12 and PF Roller Removal
C H E C K
P O IN T
n When reinstalling the Right Upper Paper Guide, let the
n
n
n
n
head of the PE Sensor Lever go through the cutoff of the
Right Upper Paper Guide from the front side of the
printer.
Be careful not to damage the hook, when removing or
installing the Front Paper Guide.
Be careful not to damage the gray coated part of PF
Roller Assembly during disassembly and assembly.
Be careful not to damage any gears. Especially be careful
at handling the Spur Gear 67.2
installed at the left side of the PF Roller Assembly
because it is a precision gear.
Disassembly and Assembly
Disassembly
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EPSON Stylus COLOR 670
Revision A
4.2.5.11 CR HP Sensor Removal
1.
Remove the Housing. (“Housing Removal” on page 72)
2.
Disconnect the cable from the CR HP Sensor and remove it by releasing
its hook.
CR HP Sensor
Sensor Securing Hook
Figure 4-50. HP Sensor Removal
Disassembly and Assembly
Disassembly
98
CHAPTER
5
ADJUSTMENT
EPSON Stylus COLOR 670
Revision A
5.1 Overview
5.1.1 Required Adjustments
This section describes the procedure for adjustments required when the
printer is disassembled and assembled for repair or service.
Table 5-1 lists all the necessary adjustments for this printer. If any service
listed in this table is carried out, all adjustments corresponding to that
service should be performed to ensure proper operation of the printer.
Table 5-1. Required Adjustments
Performance Priority
1
2
3
4
4
5
Service/Replacing parts
PG Adjustment
Initial Ink Charge
Head ID Setting
Head Angular
Adjustment
Bi-D Adjustment
USB ID Input
Replacing the printer mechanism.
NA
Q
R
NA
S
NA
Replacing the Main Board.
NA
NA
Q
NA
R
S
Replacing the printhead unit.
NA
Q
R
S
T
NA
Replacing the CR motor.
NA
NA
NA
NA
Q
NA
Replacing or removing the CR
assembly.
Q
NA
NA
R*
S
NA
NOTE: “¡”: Required Adjustment. The number in the circle shows the required adjustment order.
“NA”: Not applicable.
NOTE: *: When the CR assembly is replaced with a new one, Head Angular Adjustment is required. When the CR assembly is removed but not
replaced, only PG Adjustment and Bi-D Adjustment are required.
Adjustment
Overview
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EPSON Stylus COLOR 670
Revision A
5.2 Adjustment
3.
This section describes the detailed procedures of each adjustment.
5.2.1 PG Adjustment
Move the carriage to the center and set the thickness gauge (1.14mm
thick) on the flat face of the specified rib of the front paper guide as you
see in the figure5-1. Perform the PG adjustment from the right (HP side)
front paper guide.
Right,
Front Paper Guide
Left
HP side
When replacing or removing the Carriage Assembly during Printer
Mechanism disassembly, perform the PG adjustment when assembling it
back and get the standard distance from the printhead surface to the
paper surface.
C A U T IO N
n Do not scratch special coated surface of the PF Roller
n
n
Avoid last two
ribs on left side
and rib surface of the Front Paper Guide.
Be careful not to leave any dirt or scars on the surface of
the printhead.
Never use a bent (curved or tilted) or rusty thickness
gauge. Such a thickness gauge may cause clogged
printhead nozzle.
Carriage
Assembly
Put the gauge on a flat
surface, and then align the
center of the gauge with the
ribs.
PF Roller Assembly
C H E C K
P O IN T
Thickness gauge = 1.14mm
Do not use 1.04mm thickness gauge used for Stylus Photo 700.
Move the CR Unit to the position that the Printhead Nozzle Plate overlaps
the thickness gauge.
o Paper Gap Adjustment
2.
Front Paper Guide
Figure 5-1. PG Adjustment - Use of Thickness Gauge
4.
1.
Thickness
Gauge
C H E C K
P O IN T
Install the Right and Left Parallelism Adjust Bushing for Right and Left
Frame and align the standard mark of Parallelism Adjust Bushing with the
protrusion of the Upper Frame side.
n Put the thickness gauge on the flat side of the rib of the
front paper guide.
n When you move the carriage, pull the timing belt by your
hand.
Set the PG Lever front. (Gap: “0”)
5.
Adjustment
Move the Right Parallelism Adjust Bushing to the rear until the thickness
gauge is enabled to move with the carriage when you move the carriage
about 20mm right and left. (When you move the Right Parallelism Adjust
Bushing to the rear, gap will be narrowed.)
If the thickness gauge already moves with the carriage, move the Right
Parallelism Adjust Bushing to the front (=gap will be widen.).
Adjustment
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EPSON Stylus COLOR 670
6.
Revision A
Adjust until the thickness gauge stars moving with the carriage. From the
point where the thickness gauge stars moving with the carriage, move the
Right Parallelism Adjust Bushing by one notch toward you. (Gap will be
widen.)
At this point, make sure that the thickness gauge does not move.
Standard Position
Forward =
Gap widens
Backward =
Gap narrows
+ side
- side
Side frame
Right parallelism
adjustment
bushing
PG Lever
Figure 5-2. Paper Gap Adjustment -Adjusting Method
7.
Perform the same procedures above (from 1 to 6) for the Left Parallelism
Adjust Bushing.
o Check the Gap
After completing the adjustment for Left Parallelism Adjust Bushing,
check the PG at the right side one more time.
o Fixing right/ Left Parallelism Adjust Bushing
After completing the PG adjustment, fix the Right/ Left Parallelism
Adjust Bushing with screws.
Adjustment
Adjustment
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EPSON Stylus COLOR 670
Revision A
5.3 Using the Adjustment Program
In this printer, it is necessary to set the adjusting information for each
printer mechanism in order to maintain consistent printing function and
quality, eliminating differences of each printer mechanism’s
characteristics. Therefore, in case that the combination of the printer
mechanism and main board changes or the print head is replaced during
the repair service, you must set and save the correct information to the
MAIN board, using the exclusive adjustment program.
5.3.1 Adjustment Program Installation Procedure
This adjustment program is in the 3.5 2HD FD. The first FD is the installer
disk. When you execute Setup.exe, the installation of the program will be
started under Windows 95/98. After installation is completed, the EPSON
Stylus COLOR 670 icon will be automatically made in the program menu.
Go “Start” -> “Program” and click the icon to start this program.
5.3.2 Adjustment Program
This adjustment program is exclusive for Windows: the OS that allows
operation of this program is Windows 95/98. The following shows
programs included in this program.
C H E C K
P O IN T
n This adjustment program operates only under Windows
n
n
Adjustment
95/98: This program does not operate under DOS or
Windows 3.X.
This adjustment program automatically installl the
appropriate program according to your OS.
Perform this adjustment program using parallel I/F port.
Using the Adjustment Program
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EPSON Stylus COLOR 670
Revision A
5.3.3 Adjustment Program Initial Setting Screen
C H E C K
P O IN T
You have to input the following two settings before entering the main
menu.
o Model name
o Market Destination
Follow the procedure below to input the initial settings.
1.
When you execute the program, the following screen appears. Select the
appropriate model and market in the screen below.
If a problem occurs, make sure the driver is installed, the
printer is connected to the host PC, and the printer is turned
on. If the problem is not solved, check the task bar tray for
resident programs that may have locked up the printer port,
for example EPSON Scanner Monitor. Close these programs.
NOTE: This printer stores the model name in the PROM. Therefore,
even after selecting the model name in the screen above, the
model name will not be stored in the EEPROM. Selecting the
model name in the screen above determines certain special
commands for each model.
NOTE: The version information can be found by clicking the Version
button.
2.
Click OK to proceed to the main window, which is described below and
shown on the next page. If you mistake the model name or market
destination, the program may not operate properly.
Table 5-2. Adjustment Program
Main Menu
Service
Head ID input
Head angular adjustment
Adjustment
Bi-d adjustment
USB ID input
Head cleaning
Maintenance
Initial ink charge
Protection counter check / reset
Figure 5-3. Model Name Selection
A4 check pattern print
A4 check pattern print
Recovery for clogged nozzle
Attempts to clear clogged nozzles
The main window of the program is shown on the next page.
Adjustment
Using the Adjustment Program
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EPSON Stylus COLOR 670
Revision A
Click a menu tab to access the
corresponding menu.
Click a radio
button to see
the available
options.
Options appear in this
section of the window.
Useful information such as the stored
Head ID appear in this section.
Figure 5-4. EPSON Stylus COLOR 670 Service Program Main Window
Adjustment
Using the Adjustment Program
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EPSON Stylus COLOR 670
Revision A
5.3.4 Check This Model Name
Click the “Check this model name” radio button to confirm the model
name that is written in the PROM.
Adjustment
Using the Adjustment Program
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EPSON Stylus COLOR 670
Revision A
5.3.5 Head ID Input
1.
Select “Head voltage ID Input” from the Adjustment menu. The screen
below appears.
This program adjusts the driving characteristics of the PZT for each head
to unify the amount of ejecting ink. Input the head ID determined by the
measurement of PZT driving characteristics to EEPROM by this program.
C H E C K
P O IN T
n Perform this adjustment when the following repair /
service is done.
n Replacing the head
n Replacing MAIN board
n Replacing printer mechanism
n Perform the adjustment items described in Table 5-1
according to the replacement parts in the specified order.
Figure 5-5. Head ID Input Main Menu
2.
Adjustment
Before replacing the MAIN board, select “Check present data” in the
screen above and click OK:
Using the Adjustment Program
107
EPSON Stylus COLOR 670
3.
Revision A
Click OK in the screen below. The current head ID stored in EEPROM
appears at the bottom of the window. For adjustments requiring you to
input the head voltage ID, go to step 4. Otherwise, click Previous and you
are finished.
4.
Click Previous to return to the Head Voltage ID Input screen. To input the
head ID, select “Change data” and click OK. The screen below appears
allowing you to input the 10 character head ID (necessary after printhead
replacement).
Figure 5-7. Head voltage ID input Screen
Figure 5-6. Check the Current Data
5.
C H E C K
P O IN T
n Check the current head ID before you replace the MAIN
n
n
Adjustment
board. If the logic circuit is normal, you can read the
current data and you do not have to check the head ID
visually.
When you read the head ID by the “Check present data”
function, write down the head ID and input the data in the
EEPROM using the “Change data” function after you have
replaced the new board or head.
If necessary, you can visually find the head ID by shifting
the CR unit to the I/C replacement position without using
the “Check present data” function.
Click OK when finished entering the ID to store the ID in EEPROM.
NOTE: Read head ID from the QR code label from the left side to the
right on the top line and then the left to the right of the bottom
line.
If the head ID is not correctly input, one of the following errors will be
indicated on the bottom of the screen according to the error type.
o The number of input figure is incorrect.
o The parameter is not within the input range.
o Check ID is incorrect.
Using the Adjustment Program
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EPSON Stylus COLOR 670
Revision A
5.3.6 Head Angular Adjustment
1.
Select “Head angular adjustment” on the Adjustment menu. The
following screen appears.
During production, slight variations are created in the printhead and
carriage (which is used as a printhead base). If these differences are not
adjusted, they would adversely influence the printhead angle, resulting in
poor print quality.
Head angular adjustment adjusts the head angle against the horizontal
direction by the adjustment lever, and after adjustment is made, you
check the adjustment value by printing the special pattern print. The
following is the adjustment procedure.
C H E C K
P O IN T
n Perform this adjustment when the following repair /
service is made.
n Replacing or removing the head
n Replacing head angular lever
n Perform the adjustment items described in Table 5-1
according to the replacement parts in the specified order.
n When performing this adjustment, use of super fine paper
is recommended.
n If you do not complete the adjustment within five
minutes, the printer becomes unable to move the carriage
due to a loss of magnetism in the motor. If you see an
error message describing this condition, click OK in the
message box to recover the printer.
Figure 5-8. Head Angular Adjustment
2.
Select “Print the head angular adjustment pattern” and click OK. The
following pattern will be printed, but the paper is ejected only far enough
for you to see the pattern.
H e Head
a d A n Angular
g u l a r A Adjustment
d j u s t m e n t P Pattern
a t t e r n ( (BK-M)
B K - M L )M )
Figure 5-9. Head Angular Adjustment Pattern
3.
Adjustment
Check the printed pattern. If the series of magenta lines are not printed
directly in the center between the series of black liines, select “Move the
carriage to the adjustment position” and click OK. The carriage moves to
the center so you can manually adjust the head angle.
Using the Adjustment Program
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EPSON Stylus COLOR 670
Revision A
4.
At the head angular adjustment position, loosen the screw fixing the
printhead which is located at the right side of the CR.
NOTE: When loosing / tightening the head securing screw, hold the
CR unit. If you do not hold the CR unit, the upper frame may
be deformed, resulting in poor image quality.
Printhead
securing screw
Figure 5-10. Move the carriage to adjust the head angle
Figure 5-11. Screw Position for Fixing the Printhead
Adjustment
Using the Adjustment Program
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EPSON Stylus COLOR 670
5.
Revision A
Look very closely at the black/magenta lines in the printed pattern and
move the adjustment lever to center the magenta lines between the black
lines. The figure below shows how to move the lever to correct a
misaligned pattern.
If the series of magenta lines are below the center of the series of black
lines, shift the adjustment lever position toward the front of the printer. If
the series of magenta lines are above the center between the series of
black lines, shift the adjustment lever position toward the rear of the
printer.
Correct condition = vertical
spacing is even
7.
After finishing the adjustment, tighten the head screw while holding the
unit. (If necessary, select “Move the carriage to the adjustment position”,
click OK, and then tighten the screw.)
8.
Select “Return the carriage to the home position” and click OK. When the
carriage stops moving, the adjustment is finished.
To move this down
Move the lever
to the rear
To move this up
Move the lever
to the front
Figure 5-13. Move the carriage to the home position
Adjustment lever
Figure 5-12. Head Angular Adjustment Lever - Adjusting Method
6.
Select “Print the head angular adjustment pattern” and perform the test
print. If more adjustment is necessary, repeat steps 2 to 5; otherwise
proceed to step 7.
Adjustment
Using the Adjustment Program
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EPSON Stylus COLOR 670
Revision A
5.3.7 Bi-D Adjustment
1.
From the Adjustment menu, select “Bi Directional adjustment” and then
select “Print the Bi-D adjustment pattern. Click OK.
This adjustment is to correct differences in printing positions, which is
caused by slippage of printing timing in right and left directions during
the Bi-directional printing. Print the check pattern of the adjustment
program and write the corrected value in the EEPROM. The following is
the adjustment procedure.
C H E C K
P O IN T
n Perform this adjustment when the following repair /
service is made.
n Replacing or removing the head
n Replacing or removing the CR unit
n Replacing or removing the CR motor
n Replacing or removing the timing belt
n Replacing the printer mechanism
n Replacing the MAIN board
n When performing this adjustment, use of super fine paper
is recommended.
Figure 5-14. Bi-d Adjustment Selection
Adjustment
Using the Adjustment Program
112
EPSON Stylus COLOR 670
2.
Revision A
4.
Click OK in the next screen to print the patterns.
Look at the printed pattern, shown below.
Middle = Current
adjustment value
Incorrect
The following screen appears and select the kind of Bi-D adjustment that
is required while refering to the printed patterns.
- Select “Multi-Shot-dot” from the Item box if the Multi-Shot-dot pattern
in the center is not vertically aligned.
- Select “Variable-dot 6pl” from the Item box if the Variable-dot 6pl
pattern in the center is not vertically aligned.
Correct
The vertical lines
should line up.
Figure 5-15. Bi-d Print Patterns
NOTE: Two rows of three samples are printed. The upper row
corresponds to the Multi-shot adjustment values, with the
current value printed in the middle and a sample that is a little
higher or lower on either side. The lower row repeats this
process for the variable dot values.
3.
Check the vertical lines in the current pattern (middle of the three sets).
- If all lines are vertically aligned, adjustment is not required.
- If the center (current) set of lines is not aligned, select “Adjust” and click
OK.
Adjustment
Figure 5-16. Print Bi-d Adjustment menu
Using the Adjustment Program
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EPSON Stylus COLOR 670
5.
Revision A
Click OK and the following screen appears.
Figure 5-18. Checking present adjustment values
Figure 5-17. Bi-d Adjustment Value Input Screen
6.
Enter the number of the correct adjustment pattern. If none of the
patterns are correct, estimate a number based on a comparison of the
current pattern and the two samples and enter that number. Click OK.
7.
To print the pattern again, click Previous two times to get back to the
correct screen. Then select “Print the Bi-D adjustment pattern” and click
OK.
8.
If the central three lines of the adjustment pattern are not aligned, repeat
from step 3 to step 7.
NOTE: You can check the current adjustment data by the following
operation.
Select “Check present adjustment data” and click OK, then
click OK in the next screen.
Figure 5-19. Current bi-d adjustment values appear on screen
Adjustment
Using the Adjustment Program
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EPSON Stylus COLOR 670
Revision A
5.3.8 USB ID Input
Perform this adjustment when the MAIN board is replaced. EPSON Stylus
COLOR 670 stores 18-figure USB ID unique to the machine in EEPROM on
the MAIN board. USB ID is the data used when USB port is generated
when the printer is connected to the PC. Because the printer has the USB
ID, even if several printers with the same name are connected to the one
PC, the hard device driver can generate individual USB port based on
USB ID to supervise each port correctly. The following is the procedure of
inputting USB ID.
C H E C K
P O IN T
n When inputting the USB ID, input the data referring to the
n
n
1.
10-digit product serial number labeled on the back of the
printer. The rest 8-digit will be automatically generated by
the adjustment program.
This data input is required only when the MAIN board is
replaced.
USB is the valid interface only under Windows98
environment.
Select and click “USB ID check/input” from the Adjustment menu. The
following screen appears.
Figure 5-20. Main USB ID check/input Screen
2.
Adjustment
Select “Input USB ID” from USB ID Input main menu and click OK.
Using the Adjustment Program
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EPSON Stylus COLOR 670
Revision A
TO ONLY CHECK THE USB ID
To just check the USB ID without having to enter anything, select the
“Check USB ID” radio button and click OK.
Figure 5-21. Actual Input Screen
3.
4.
Check the serial number on the back of the printer and input the 10-digit
serial number. After inputting the serial number, click OK and the
remaining 8 digits will be automatically generated by the program and
the total 18 figures will appear in the lower box.
Click Previous to return the the main USB screen, shown below.
Adjustment
Figure 5-22. USB ID Input Screen 3
NOTE: - If you use Windows 98, you can verify the USB port is
communicating properly with the “Confirmation of the USB
Port is performed normal, using the “Check USB port
function” menu from the USB ID input menu, and select the
port you want to verify in the next screen. Then click OK.
- Note this menu is valid only under Windows98 environment.
By selecting this menu, A4 check pattern will be printed.
Using the Adjustment Program
116
EPSON Stylus COLOR 670
Revision A
5.3.9 Head Cleaning
This item is selected from the maintenance menu. Head cleaning is used
when the dot missing is occurred to perform the head cleaning more
effectively. By selecting / performing this sequence, the powerful cleaning
(CL’ which consumes ink the most among manual CL + rubbing) is
performed constantly.
1.
Select “Head Cleaning” from the Maintenance menu. The following
screen appears.
Figure 5-23. Head Cleaning
2.
Click OK in the screen above and CL2 cleaning will be performed.
Adjustment
Using the Adjustment Program
117
EPSON Stylus COLOR 670
Revision A
5.3.10 Initial Ink Charge
1.
From the Maintenance menu, select “Initial Ink Charge”. The following
screen appears.
There is no ink charged in the ink path of a spare print head and printer
mechanism. Therefore, after you replace any of the following units,
perform initial ink charge and return the printer to the user after making
sure that ink is ejected correctly from the print head.
C H E C K
P O IN T
n Perform this adjustment when the following repair /
service is made.
n Replacing the head
n Replacing the printer mechanism
n Perform the adjustment items described in Table 5-1 in
the appropriate order according to the replaced pats.
n Before performing this sequence, make sure to replace I/C
with a new one.
n By performing this sequence, 1/10 of each I/C will be
consumed.
Figure 5-24. Initial Ink Charge
2.
Adjustment
Click OK in the screen above and the initial ink charge will be performed.
Using the Adjustment Program
118
EPSON Stylus COLOR 670
Revision A
5.3.11 Protection Counter Indication / Reset
This function is to check the protection counter value for the waste ink
absorber and resetting the counter value.
C H E C K
P O IN T
n After resetting the protection counter value, replace the
ink waste pad with a new one.
n When repairing the printer, check the protection counter
using this function. If the counter value reaches 25000
points, advice the customer to replace the ink waste pad.
After replacing the ink waste pad, reset the waste counter
value.
1.
From the Maintenance menu, select “Protection counter check/clear”. The
following screen appears.
Figure 5-26. Check the Current Counter Value
3.
Click OK in the screen above. The current counter value will be read from
EEPROM and will be indicated in the lower box.
4.
If the counter value exceeds 25000 points or if you replace the waste ink
pad (absorber), clear the protect counter.
5.
To clear the protect counter, click “Previous”in the screen above to return
to the “Protection counter check / clear” screen.
6.
Select “Clear the protection counter value” and click OK.
Figure 5-25. Indication of the Protection Counter Value
2.
In the screen above, select “Check the present counter value” and click
OK.
Adjustment
Using the Adjustment Program
119
EPSON Stylus COLOR 670
Revision A
.
Figure 5-27. Current Counter Value Indication
7.
In the screen above, click OK to clear the waste ink counter.
Adjustment
Using the Adjustment Program
120
EPSON Stylus COLOR 670
Revision A
5.3.12 Print A4 Check Pattern
This function is to check the adjustment result comprehensively on the
plain paper. By performing this function, the following items are printed.
o 360dpi Black / Color Pattern print
If there is no print blur or white lines on the print pattern, the
adjustment is completed.
o Nozzle Check Pattern print
If dot is not missing and each nozzle print pattern is uniformly printed,
it is OK.
o Alignment Pattern print
Check the alignment on each nozzles on Uni-d print and the alignment
of black and each color.
o Head Angular Adjustment
o Head Actuator Voltage ID
o Ink Waste Pad Counter Value
o Bi-d Adjustment result
Figure 5-28. A4 Check Pattern Menu
C H E C K
P O IN T
When performing this function, use plain paper. If you use any
special paper, white line will be generated on 360dpi print
pattern.
1.
To print out the A4 check pattern, click the “Print A4 Pattern” tab.
2.
Click the “A4 pattern will print” radio button, and then click OK.
Adjustment
3.
Click OK in the screen that appears.
Using the Adjustment Program
121
CHAPTER
6
MAINTENANCE
EPSON Stylus COLOR 670
Revision A
6.1 Overview
This section provides information to maintain the printer in its optimum
condition.
6.1.1 Cleaning
This printer has no mechanical components which require regular cleaning
except the printhead. Therefore, when returning the printer to the user, check
the following parts and perform appropriate cleaning if stain is noticeable.
C A U T IO N
n Never use chemical solvents, such as thinner, benzine, and
n
n
n
acetone to clean the exterior parts of printer like the
housing. These chemicals may deform or deteriorate the
components of the printer.
Be careful not to damage any components when you clean
inside the printer.
Do not scratch the surface (coated part) of PF roller
assembly. Use soft brush to wipe off any dusts. Use a soft
cloth moistened with alcohol to remove the ink stain.
Do not use cleaning sheet included in the media for normal
usage. It may damage the coated surface of PF roller.
o Exterior parts
Use a clean soft cloth moistened with water and wipe off any dirt. If
the exterior parts are stained with ink, use a cloth moistened with
neutral detergent to wipe it off.
o Inside the printer
Use a vacuum cleaner to remove any paper dust.
o ASF LD Roller
If paper dust on the surface of ASF LD Roller lowers the friction, set
the adhesive surface of the cleaning sheet included in the media to
the surface of the ASF roller and repeat loading paper from the ASF.
Maintenance
Overview
123
EPSON Stylus COLOR 670
Revision A
o Maintenance Request Error
6.1.2 Service Maintenance
Ink is used for cleaning operation as well as printing. When ink is used
for cleaning, the ink is drained to Waste Ink Pad (Ink Absorber Tray
Assembly) and the amount of waste ink is recorded in the EEPROM on
the MAIN board. Due to this, when the waste ink has reached the limit
of the absorbing capability of the Waste Ink Pad, Maintenance
Request Error is indicated on LED.
In this case, replace the Waste Ink Pad and clear the Waste Ink
Counter stored in EEPROM. Waste Ink Counter can be reset from the
control panel and the adjustment program. The following is the
process to reset the Ink Counter by the control panel.
If any abnormal print (dot missing, white line, etc.) has occurred or the printer
indicates “Maintenance Request Error”, take the following actions to clear the
error.
o Head Cleaning
When any abnormal print has occurred, it is necessary to perform
printhead cleaning, using the built-in head cleaning function. This
function can be executed from the control panel, printer driver utility
and adjustment program. EPSON Stylus COLOR 670 has 3 modes for
manual cleaning and even during printing, appropriate cleaning mode
is automatically selected and executed according to various
conditions. When you select and execute manual cleaning, the most
appropriate cleaning mode is selected and therefore the cleaning
completion period varies depending on the mode. (Refer to “Ink
Sequence” on page 42.)
The following is the process to perform the head cleaning from the
control panel.
1.
Make sure that the printer is in stand-by state (the Power indicator is not
blinking), and press “Maintenance” button on the control panel.
2.
After performing the head cleaning sequence, perform the print check. If
you repeat cleaning without print check, the weakest cleaning, CL1 will be
repeated.
Maintenance
1.
Replace Ink Absorber Tray Assembly.
2.
Turn the printer ON while pressing Load/Eject and Ink Maintenance
buttons.
3.
While Paper Out LED is blinking (for 3 seconds), keep pressing the Ink
Maintenance button.
4.
When the Waste Ink Counter is reset, all the panel LED starts blinking and
it returns to ON line condition.
Overview
124
EPSON Stylus COLOR 670
Revision A
6.1.3 Lubrication
Table 6-2. Lubrication Points (continued)
The characteristics of the oil or grease have great affects on the mechanical
function and durability, especially does the characteristics about temperature
environment. The type and amount of oil and grease used to lubricate the
printer parts are determined based on the results of internal evaluations.
Therefore, be sure to apply the specified type and amount of oil or grease to
the specified part of the printer mechanism during servicing.
C A U T IO N
No.
Lubrication Type/Point
Remarks
2
<Lubrication Point & Amount>
• Contact point between PF roller of
the front paper guide and hook.
(1 point, lubrication amount: 10mm)
• Contact point between paper eject
roller of the front paper guide and
hook.
(2 points, lubrication amount: 2mm)
<Lubrication Type> G-26
• Lubricate the contact points
between the hooks on the
front paper guide and each
roller.
• Do not attach the grease to
the paper path.
• Use a syringe to apply it.
• After lubrication, make sure
that the carriage moves
smoothly.
• Use a syringe to apply it.
3
<Lubrication Point>
• Contact point between the CR unit
and the upper frame.
<Lubrication Type> G-26
<Lubrication Amount>
• Range from the HP sensor
installation point to the full width of
the FFC guide board: approximately
270 mm
4
<Lubrication Point & Amount>
• 1/4 of Spur Gear 67.2
• Combination Gear 3, 30 installation
shaft: 1mm x 5mm
• 1/3 of Spur gear, 23.2
<Lubrication Type> G-26
• Rotate gears after applying
grease to evenly distribute
it.
• Use a syringe to apply it.
• Use a syringe to apply it.
5
<Lubrication Point>
Combination gear, 16, 40.8 of the left
frame Installation shaft
<Lubrication Type> G-26
<Lubrication Amount>
Approximately 5 mm
n Never use oil or grease other than those specified in this
manual. Use of different types of oil or grease may
damage the component or give bad influence on the
printer function.
Never apply larger amount of oil or grease than specified
in this manual.
n
Table 6-1. Lubrication Types
Type
Name
EPSON Code
Supplier
Grease
G-26
B702600001
EPSON
Oil
O-12
1038991
EPSON
Lubrication Devices
Flags Dispenser
1049533
EPSON
Table 6-2. Lubrication Points
No.
Lubrication Type/Point
Remarks
1
<Lubrication Point>
• Contact point between PF roller and
the rear paper guide.
<Lubrication Type> G-26
<Lubrication Amount>
• A half turn of PF roller.
• Apply grease while rotating
spur gear 36 attached at the
left end of PF roller.
• Do not attach the grease to
the paper path.
• Use a syringe to apply it.
Maintenance
Overview
125
EPSON Stylus COLOR 670
Revision A
Table 6-2. Lubrication Points (continued)
No.
6
Lubrication Type/Point
<Lubrication Point>
• Inside the PF roller assembly
installation bushing 12:
Left: Inside the left bushing 12
Right: Inside the right bushing 12
<Lubrication Type> G-26
<Lubrication Amount>
Approximately 3 mm diametrically
Table 6-2. Lubrication Points (continued)
Remarks
• For the right bushing
(pump assembly shaft
bushing), apply it from the
paper path side, and wipe
off any grease sticking out
to the cap assembly side.
• Rotate PF roller after
applying grease to evenly
distribute it in the bushing.
• Use a syringe to apply it.
<Lubrication Point>
• Contact point with both left / right
bushings (bushing 6) for paper eject
roller.
<Lubrication Type> G-26
<Lubrication Amount>
• Evenly apply inside the bushings.
• Evenly apply inside the
bushings contacting the
shafts.
• Do not attach the grease to
the paper path.
• Use a syringe to apply it.
8
<Lubrication Point>
• Contact points between driven
pulley holder and upper frame
<Lubrication Type> G-26
<Lubrication Amount>
• 2 mm long for each point.
• After applying grease,
make sure that the holder
slides only by spring force.
• Use a syringe to apply it.
• Evenly apply inside the
hole.
• Avoid applying grease to
LD roller assembly.
9
<Lubrication Point>
• ASF; The round hole in the right
frame of ASF (to hold the roller
shaft)
(installation point to the middle
frame)
<Lubrication Type> G-26
<Lubrication Amount>
Evenly apply inside the hole.
7
Maintenance
No.
Lubrication Type/Point
Remarks
10
<Lubrication Point>
ASF; Contact points between hopper
and hopper release lever.
<Lubrication Type> G-26
<Lubrication Amount>
Evenly apply lubrication to the points.
• Evenly apply lubrication to
the contact point with
hopper release lever (cam).
• Completely wipe off any
grease sticking out to the
inner side of ASF.
• Evenly apply inside the
hole.
11
<Lubrication Point>
The round cutout in the left frame of
ASF (Spur gear, 34 is inserted to the
cutout)
<Lubrication Type> G-26
<Lubrication Amount>
Evenly apply inside the hole.
12
<Lubrication Point>
Oil pad in the carriage assembly.
<Lubrication Type> O-12
<Lubrication Amount>
0.7cc
Note: This is the amount to be applied
to a new oil pad. Do not add oil to the
oil pad in use.
• Lubricate the oil pad only
when;
-Replacing the carriage
assembly.
-Replacing the oil pad
• Use a precise syringe to
apply it. If you accidentally
apply too much oil to the oil
pad, throw the pad away
and take a new one.
• Leave the oil pad for a while
to wait until oil is evenly
infiltrated, then install it on
the carriage assembly.
13
<Lubrication Point>
5cm from the both ends of CR guide
shaft. Apply oil up and down side of
the shaft.
<Lubrication Type> O-12
<Lubrication Amount>
Push the flags dispenser and moist the
end with oil. Apply oil to the range of
5cm from the both ends of the shaft.
• Do not lubricate with
pressing the flags
dispenser. Too much oil
may result in oil leakage.
• After lubrication, shift the
timing belt to the left and to
the right and evenly
distribute it around the CR
unit shaft bushing and CR
guide shaft.
Overview
126
EPSON Stylus COLOR 670
Revision A
No.5
Combination Gear 16, 40.8 Shaft
No.4
Spur Gear 23.2
No.2
Combination Gear 16.40.8
No.1
No.4
Spur Gear 67.2
No.4
Combination Gear 3, 30
No.6
Bush 12 Inside
Spur Gear 34
No.3
Upper Frame
No.7
Bushing 6 Shaft Receiver
No.11
Maintenance
Overview
127
EPSON Stylus COLOR 670
Revision A
No.12
CR Oil Pad
Driven Pulley
Holder
Amount of Oil: 0.7cc
(Never apply more than specified.)
Carriage
No.8
ASF Hopper
Assembly
CR Guide Shaft
No.10
Flags Dispenser
CR Unit
No.13
ASF Frame
5cm
5cm
Front Side of the Printer
No.9
Maintenance
Overview
128
CHAPTER
7
APPENDIX
EPSON Stylus COLOR 670
Revision A
7.1 Connector Summary
Table 7-1. Connector Summary for C259Main
Connector
7.1.1 Major Component Unit
Function
Table to refer.
CN1
Parallel Interface
Connector
Refer to “IEEE-1284 Parallel I/F
(Forward Channel)” on page 18
o MAIN Board (C301MAIN)
CN3
USB Interface Connector
Refer to “USB (Universal Serious
Bus)” on page 22
o Power Supply Board (C301PSB/PSE)
CN4
HP Sensor
Table 7-2
o Control Panel (C209PNL)
CN5
PE Sensor
Table 7-3
CN6
ASF Sensor
Table 7-4
CN7
PF Motor
Table 7-5
CN8
Printhead
Table 7-6
CN9
Printhead
Table 7-7
CN10
Power Supply Connector
Table 7-8
CN11
Control Panel
Table 7-9
CN12
CR Motor
Table 7-10
Major component unit of this printer is as follows.
The figure below shows how these components are connected.
CN1
CN11
C301 PS
Board
CN2
Control Panel
CN4
CN5
CN10
C301 MAIN
Board
CN6
CN12
Table 7-2. Connector CN4
Parallel I/F
CN1
USB I/F
CN2
CN7
CN8
HP Sensor
PE Sensor
ASF HP Sensor
CR Motor
PF Motor Printhead Printhead
Printer Mechanism
Figure 7-1. Connection of the Major Components
Appendix
Pin
Signal Name
I/O
Function
1
HP
In
Sensor detect signal
2
GND
---
Ground
3
HPV
---
Sensor Power Supply
CN9
Table 7-3. Connector CN5
Pin
Signal Name
I/O
1
PE
In
Sensor detect signal
2
GND
---
Ground
3
PEV
---
Sensor power supply
Connector Summary
Function
130
EPSON Stylus COLOR 670
Revision A
Table 7-6. Connector CN8
Table 7-4. Connector CN6
Pin
Signal Name
I/O
Function
1
ASF
In
Sensor detect signal
2
GND
---
Ground
3
ASFV
---
Sensor power supply
Table 7-5. Connector CN7
Pin
Signal Name
I/O
1
PFA
Out
Phase drive signal (A)
2
PF-A
Out
Phase drive signal (-A)
3
PFB
Out
Phase drive signal (B)
4
PF-B
Out
Phase drive signal (-B)
Pin
Signal Name
I/O
12
GND2
---
Ground
13
GND2
---
Ground
14
COM
Out
PZT drive signal
15
COM
Out
PZT drive signal
16
COM
Out
PZT drive signal
Function
Function
Table 7-7. Connector CN9
Table 7-6. Connector CN8
Signal Name
I/O
Function
1
NCHG
Out
2
GND
---
3
SCK
Out
4
GND
---
5
SP
Out
CH signal select signal
All nozzle drive signal
Ground
Serial data clock signal
Ground
Pin
Signal Name
I/O
1
GND
---
Ground
6
SI6
Out
Serial data (This data line is not used)
2
GND
---
Ground
7
SI5
Out
Serial data
3
GND
---
Ground
8
SI4
Out
Serial data
4
LAT
Out
Serial data latch signal
9
SI3
Out
Serial data
5
GND
---
Ground
10
SI2
Out
Serial data
6
CH
Out
MS/VS trapezoid waveform select
signal
11
SI1
Out
Serial data
12
GND
---
Ground
7
GND
---
13
GND
---
Ground
8
VDD
Out
14
THM
In
Head temperature signal
9
GND
---
15
COC
In
Color ink cartridge sensor signal
10
VHV
Out
16
COB
In
Black ink cartridge sensor signal
11
GND2
---
Appendix
Function
Pin
Ground
+ Nozzle selector 5V power supply
Ground
+ Nozzle selector +42V power supply
Ground
Connector Summary
131
EPSON Stylus COLOR 670
Revision A
Table 7-10. Connector CN12
Table 7-8. Connector CN10
Pin
Signal Name
I/O
1
+42V
---
2
+42V
3
Function
Pin
Signal Name
I/O
Function
Mechanism drive power supply
1
CRA
Out
Phase drive signal (A)
---
Mechanism drive power supply
2
CR-A
Out
Phase drive signal (-A)
GND
---
Ground
3
CRB
Out
Phase drive signal (B)
4
ESAVE
In
Energy saving signal
4
CR-B
Out
Phase drive signal (-B)
5
PSC
In
Power supply switch output signal
6
GND
---
Ground
7
GND
---
Ground
8
+5V
---
Logic power supply
Table 7-9. Connector CN11
Pin
Signal Name
I/O
1
SW2
In
Panel switch on/off signal
2
SW0
In
Panel switch on/off signal
3
PSC
In
Power on/off switch
4
SW1
In
Panel switch on/off signal
5
LED3
Out
Panel LED signal
6
+5V
Out
+5V panel board power supply
7
+5V
Out
+5V panel board power supply
8
LED2
Out
Panel LED signal
9
GND
---
10
LED1
Out
11
GND
--
12
LED0
Out
Appendix
Function
Ground
Panel LED signal
Ground
Panel LED signal
Connector Summary
132
EPSON Stylus COLOR 670
Revision A
7.1.2 EEPROM Address Map
Table 7-11. EEPROM Address Map (continued)
l
Address
Table 7-11. EEPROM Address Map
Address
00H
01H
Explanation
Settings
Password
QPIT
Settings
Factory
Settings
0FH
-
5AH
-
02H
EEPROM mapping
revision
42H
-
03H
Reserved
00H
-
04H
Interface selection
0: Auto
3: USB
00H
00H*2
05H
Interface time-out
0 to 255
(by second, value of 0
means 10 seconds)
0AH
0AH
06H
Compatibility
speed
0: Fast
1: Slow
2: Special-1 3: Special-2
00H
00H
07H
ECP speed
*a
0: Fast
1: Slow
00H
00H
08H
IEEE1284.4 for
Parallel
0: Auto
2: Off
1: On
00H
01H
09H
IEEE1284.4 for
USB
0: Auto
2: Off
1: On
00H
01H
I/F Control flags
bit1: ECP mode
(0=Off, 1=On) *b
bit0: IEEE1284 mode (0=On,
1=Off) *c
0AH
1: Parallel
00H
Reserved
00H
-
0CH
Reserved
00H
-
0DH
Reserved
00H
-
0EH
Reserved
00H
-
0FH
Reserved
00H
-
10H
CPSI password
00H
00H
11H
CPSI password
00H
00H
12H
CPSI password
00H
00H
Appendix
Settings
QPIT
Settings
Factory
Settings
13H
CPSI password
00H
00H
14H
CPSI password
00H
00H
15H
CPSI password
00H
00H
16H
Print direction
control
0: Bi-D
2: Auto
1: Uni-D
02H
02H
17H
CG table
0: PC 437
1: PC 850
00H
00H
18H
Font
0: Courier
00H
00H
19H
Pitch
0: 10cpi
00H
00H
1AH
Auto LF, Network
I/F mode
bit1: Network I/F mode
(0=Off, 1=On)
bit0: Auto line feed
(0=Off), 1=On)
00H
00H
1BH
Check mode
control
bit7: Self test mode
bit6: Hex dump mode
00H
00H
1CH
Reserved
00H
-
1DH
Reserved
00H
-
1EH
Reserved
00H
-
1FH
Reserved
00H
-
20H
Bi-D Adjustment
-36<=n<=+36
for Multi-Shot (Bk) (by 1/1440 inch)
00H
(*1)
21H
Bi-D Adjustment
for 6plVSD (Bk)
00H
(*1)
22H
Reserved
00H
-
23H
Reserved
00H
-
24H
Reserved
00H
-
25H
Reserved
00H
-
26H
1st Dot Position
Adjustment
00H
(*1)
27H
Reserved
00H
-
00H
0BH
Explanation
Connector Summary
-36<=n<=+36
(by 1/1440 inch)
-36<=n<=+36
(by 1/1440 inch)
133
EPSON Stylus COLOR 670
Revision A
Table 7-11. EEPROM Address Map (continued)
QPIT
Settings
Factory
Settings
00H
-
Address
Explanation
28H
Reserved for
Carriage phase on
home
29H
Reserved for PE
Sensor
adjustment data
00H
-
2AH
Reserved
00H
-
2BH
Error Code
00H
00H
2CH
Reserved
00H
-
2DH
Reserved
00H
-
2EH
Reserved
00H
-
2FH
Reserved
00H
-
42 to 44 x 360
(by 1/360 inch)
00H
00H
78H
78H
1244 to 44 x 360
(by 1/360 inch)
1EH
1EH
Bottom margin
F0H
F0H
Page length
1244 to 44 x 360
(by 1/360 inch)
1EH
1EH
F0H
F0H
00H
-
00H
-
38H
00H
00H
39H
00H
00H
00H
00H
3BH
00H
00H
3CH
00H
-
00H
-
00H
-
00H
-
30H
Top margin
31H
32H
33H
34H
35H
36H
37H
3AH
3DH
3EH
3FH
Reserved
Reserved
Reserved
Reserved
Appendix
Settings
Table 7-11. EEPROM Address Map (continued)
QPIT
Settings
Factory
Settings
0FH
-
5AH
-
Ink flag 1
bit7: Reserved
bit6: Black one-time
bit5: Color one-time
bit4: Initial fill required
bit3: Reserved
bit2: Ink cleaning seq.
bit1: Bk CL required
bit0: Color CL required
00H
10H
Ink flag2
bit2: YMC cartridge
changed and cleaned
bit1: Black cartridge
changed and cleaned
bit0: Black cartridge
changed and cleaned
00H
00H
00H
00H
00H
00H
00H
00H
47H
00H
00H
48H
00H
00H
00H
00H
00H
00H
4BH
00H
00H
4CH
00H
00H
00H
00H
4EH
00H
00H
4FH
00H
00H
Address
Explanation
Settings
40H
41H
42H
43H
Password
44H
45H
46H
Ink counter Cb
49H
4AH
4DH
Connector Summary
Ink counter Cy
Ink counter Cm
134
EPSON Stylus COLOR 670
Revision A
Table 7-11. EEPROM Address Map (continued)
Address
Explanation
50H
51H
Settings
Table 7-11. EEPROM Address Map (continued)
QPIT
Settings
Factory
Settings
Address
00H
00H
6AH
Explanation
Reserved
Settings
QPIT
Settings
Factory
Settings
00H
00H
00H
00H
00H
00H*2
00H
00H*2
00H
-
00H
-
00H
00H
00H
00H
00H
00H
6BH
52H
00H
00H
6CH
53H
00H
00H
6DH
54H
00H
00H
6EH
00H
00H
6FH
00H
00H
70H
57H
00H
00H
71H
58H
00H
00H
72H
00H
00H
00H
00H
73H
00H
00H
00H
00H
74H
00H
00H
00H
00H
75H
00H
00H
00H
00H *3
76H
00H
00H
00H
00H *3
77H
00H
00H
00H
00H
78H
00H
00H
00H
00H
79H
00H
00H
00H
00H
7AH
00H
00H
00H
00H
7BH
00H
00H
00H
00H
7CH
00H
00H
00H
00H
7DH
00H
00H
00H
00H
7EH
00H
00H
00H
00H
7FH
00H
00H
00H
00H
80H
0FH
-
5AH
-
00H
-
|
|
00H
-
55H
56H
Ink counter Cc
Reserved
59H
5AH
Reserved
5BH
5CH
5DH
5EH
Ink counter A0
Ink counter A80
5FH
60H
61H
62H
63H
64H
Ink counter Rb0
Ink counter Rb80
Ink counter Ry0
65H
66H
67H
68H
69H
Ink counter Rv80
CL time
00H
00H
81H
00H
- *2
82H
00H
- *2
|
9FH
Appendix
Connector Summary
Power off time
Reserved
Accumulated
printing time
Reserved
Password
Reserved
135
EPSON Stylus COLOR 670
Revision A
Table 7-11. EEPROM Address Map (continued)
Address
Explanation
Settings
Table 7-11. EEPROM Address Map (continued)
QPIT
Settings
Factory
Settings
00H
(*1)
QPIT
Settings
Factory
Settings
00H
-
|
|
D7H
00H
-
D8H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
-
00H
-
00H
-
00H
00H
00H
-
00H
-
|
|
00H
-
Address
Explanation
A0H
Head Actuator
Rank ID for VhN
+1<=n<=+32
A1H
Head Actuator
Rank ID for Vhm
+1<=n<=+40
00H
(*1)
A2H
Head Actuator
Rank ID for VhL
+1<=n<=+37
00H
(*1)
A3H
Reserved
00H
00H
DAH
4AH
Reserved
00H
00H
DBH
A5H
Reserved
00H
00H
A6H
Head Actuator
Rank ID for AR
0<=n<=+6
00H
(*1)
A7H
Microweave ID
+1<=n<=+9
00H
(*1)
A8H
Head Actuator
Rank ID for IwAB
+30<=n<=+70
00H
(*1)
A9H
Head Actuator
Rank ID for IwCD
+30<=n<=+70
00H
(*1)
AAH
Head Actuator
Rank ID for IwEF
+30<=n<=+70
00H
(*1)
ABH
Reserved
00H
00H
E0H
Market ID
ACH
Reserved
00H
00H
E1H
Reserved
ADH
Reserved
00H
00H
E2H
00H
-
|
|
|
FFH
00H
-
0FH
-
5AH
-
00H
(*1)
|
|
00H
(*1)
AEH
|
Reserved
BFH
C0H
C1H
Password
C2H
|
USB ID
D3
Appendix
Settings
D4
|
D9H
DCH
Reserved
Custom EEPROM
sub number
Panel mask
function
bit7: Entry Self-Test
bit6: Entry Hex-Dump
bit5: Extended settings
bit4: Reserved
bit3: Reserved
bit2: Cleaning
bit1: Replace I/C
bit0: Load/Eject
DDH
DEH
Reserved
DFH
Model Name
0:STD 2:Custom
*a: Change busy signal delay time from STB.
(Fast: Max1Mb/S, Slow: Max. 600Kb/S)
*b: Set IEEE 1284 nibble mode or ECP mode.
*c: Set IEEE 1284 nibble mode reverse channel to invalid.
*1: This item is set at the factory. (set by manufacturing process program)
*2: This item is initialized by EEPROM reset.
*3: This item is initialized by waste counter reset.
Connector Summary
136
EPSON Stylus COLOR 670
Revision A
7.2 Component Layout
Figure 7-3. C301MAIN Component Layout (Soldered Side)
Figure 7-2. C301MAIN Component Layout (Parts Side)
Appendix
Component Layout
137
EPSON Stylus COLOR 670
Revision A
Figure 7-5. C301PSE Component Layout
Figure 7-4. C301PSB Component Layout
Figure 7-6. C209 PNL Component Layout
Appendix
Component Layout
138
EPSON Stylus COLOR 670
Revision A
7.3 Exploded Diagram
Following pages shows exploded diagram.
102
500
115
126
751
126
101
752
106
180
105
135
752
125
181
450
132
124
129
133
182 for
LATIN
769
130
124
104
400 for ETT
753
400 for EAI,
122
129
EUL(120V)
103
123
for EAI(LATIN220V),EUR,S.E.ASIA,
OCEANIA,EKL,RUSSIA
134
123
401
400
100
EPSON STYLUS COLOR 670
NO.1 REV.01 10189
Figure 7-7. Stylus COLOR 670 Exploded Diagram 1
Appendix
Exploded Diagram
139
EPSON Stylus COLOR 670
Revision A
726
709
712
A
711
703
714
727
510
703
718
755
739
721
C
713
764
708
728
128
122
122
747
300
122
763
740
735
G
707
F
122 511
587
720
729
741
742
730
122
723
743 745
746
748
737
736
738
724
731
766
534
113
579
777
111
580
122
725
722
567
D
530
109
717
719
718
723
587 565
122
772
121
122
506
131
587
108
568
587
578 574
122
716
569
532
112
744
746
734
732
724
750 503
504 587
200
737
C
330
122
736
745
733
122
710
739
721
720
735
without 747,748
with 772
B
121
108
587
A
B
558
501
577
114
556
590 573
756
757
502
587
559
116
587
758
557
586
EPSON STYLUS COLOR 670
NO.2
505
587
122
REV.01 10189
Figure 7-8. Stylus COLOR 670 Exploded Diagram 2
Appendix
Exploded Diagram
140
EPSON Stylus COLOR 670
527
Revision A
122
524
545
548
551
523 117
526 588
527 525
(506)
545
548
551
550
549
520
519
521
552
553
546
550
549
513
517
760
592 G
587
545
528
545
754
759
555
587
550
549
518
527
507
554
545
548
551
550
522
549
706 776
548
548
551
547
548
550
549
551
D
591
F
761
700
776
551
119
516
587
536
703
515
566
701
563
529
531
765
543
702
576
537
540
587
560
509
587
544
542 544
542
587
562
535
538
544
542 544
542
762
705 564
550
549
561
615
544
542 544
542
512
544
541
514
544
542 544
542
533 534
508
544
542 544
542
542
587
588
539
544
542
544
542
530
589 571
119
544
EPSON STYLUS COLOR 670
NO.3 REV.01 10189
572
570
Figure 7-9. Stylus COLOR 670 Exploded Diagram 3
Appendix
Exploded Diagram
141
EPSON Stylus COLOR 670
Revision A
04
05
03
03
02 for S.E.ASIA
01
PACKING MATERIAL FOR EPSON STYLUS COLOR 670
Rev.01
10168
Figure 7-10. Stylus COLOR 670 Packing Material
Appendix
Exploded Diagram
142
EPSON Stylus COLOR 670
Revision A
7.4 Parts List
Table 7-12. Stylus Color 670 Parts List (continued)
Part Number
Table 7-12. Stylus Color 670 Parts List
Part Number
Appendix
Description
Description
121
C.P.SCREW
122
C.B.S. SCREW
123
C.B.(O) SCREW,4X5,F/ZG
100
HOUSING
101
COVER,PRINTER
124
C.B.S. SCREW
102
PAPER SUPPORT;B
125
C.B.P-TITE SCREW,3X8,F/ZN
103
STACKER ASSY
126
C.B.P-TITE,3X10,F/ZN
104
PANEL ASSY
128
MINI CLAMP
105
SHIEALDPLATE,PANEL
129
C.B.S.(P) SCREW
106
HOUSING,PANEL,LEFT
Q2
C.B.SCREW,2.6X8,F/ZN
108
GROUNDING PLATE
Q3
C.B.SCREW,2.6X8,F/ZN
109
COVER,SHIELD PLATE,M/B,RIGHT
300
BOARD ASSY., POWER SUPPLY
111
COVER,CABLE;B
330
WIRE HARNESS
112
COVER,INLET,UPPER;B
400
POWER CABLE ASSY.
113
COVER,INLET,LOWER;B
450
BOARD ASSY.,PANEL
114
SHIALD,PLATE,M/B
500
PRINTER MECHANISM(ASP)M4L10-100
115
LOGO PLATE
501
FRAME ASSY.,LEFT
116
HOUSING,SUPPORT,RIGHT;B
502
MOTOR,ASSY,PF
117
HOUSING,SUPPORT,LEFT;B
503
SPUR GEAR,23.2
119
FOOT
504
COMBINATIONGEAR,16,40.8
Parts List
143
EPSON Stylus COLOR 670
Revision A
Table 7-12. Stylus Color 670 Parts List (continued)
Part Number
Appendix
Table 7-12. Stylus Color 670 Parts List (continued)
Description
Part Number
Description
505
FRAME,RIGHT
524
SPURGEAR,67.2
506
FRAME,TOP
525
SPACER,FASTEN,ROLLER,PF
507
MOTOR,ASSY,CR
526
SPACER,FASTEN,ROLLER,PF;B
508
PUMP ASSY.
527
C-RING
509
CAP ASSY.
528
PLANE WASHER,12.2X0.5X15
510
FRAME,BOTTOM
529
ROLLER,ASSY.,PAPEREJECT
511
SHEET,PROTECTION,HEAD
530
BUSHING,6
512
FRAME,FRONT
531
RETAINING RING
513
BUSHING,PARALLELISM ADJUST,LEFT
532
SPURGEAR,36
514
BUSHING,PARALLELISM ADJUST,RIGHT
533
SUPRGEAR,11
515
PAPERGUIDE,REAR
534
PLANE WASHER,4.1X0.5X6.5
516
ROLLER,PF
535
PAPER GUIDE,FRONT;B
517
COMPRESSION SPRING,5.85
536
GROUNDING WIRE,EJ
518
BUSHING,12,LEFT
537
GUIDE,PAPER EJ
519
LEVER,CHANGE
538
FRAME, PAPEREJECT
520
SPURGEAR,26.4
539
HOLDER,STAR WHEEL,RIGHT
521
SPACER,C-RING
540
HOLDER,STAR WHEEL,LEFT
522
SCALLOP SPRING PIN-AW,2X16,F/B
541
HOLDER,STARWHEEL,FRONT
523
COMPRESSION SPRING,0.9
542
STARWHEEL ASSY.,8;E
Parts List
144
EPSON Stylus COLOR 670
Revision A
Table 7-12. Stylus Color 670 Parts List (continued)
Part Number
Appendix
Table 7-12. Stylus Color 670 Parts List (continued)
Description
Part Number
Description
543
STARHWEEL,8;B
562
GROUNDINGPLATE,HEAD
544
ROD SPRING,STAR WHEEL
563
OIL PAD
545
PAPER GUIDE,UPPER
564
SLIDER,CR
546
PAPER GUIDE,LEFT
565
TIMING BELT
547
PAPER GUIDE,RIGHT
566
SHAFT,CR,GUIDE
548
SHAFT,PAPER GUIDE,UPPER
567
PULLEY ASSY.,DRIVEN
549
SHAFT,ROLLER,DRIVEN
568
HOLDER,PULLEY,DRIVEN
550
ROLLER,DRIVEN;D
569
COMPRESSION SPRING,19.6
551
TORSION SPRING,117.6
570
LEVER,PG
552
CIRCUIT ASSY,PE
571
LEVER,PG,SUPPORT
553
HOLDER,PE
572
TORSION SPRING,63.7
554
LEVER,PE
573
COMBINATION GEAR 6,34.4
555
TORSION SPRING,0.22
574
COMBINATION GEAR 8,30
556
SHEET,GUIDE PLATE,CABLE
576
POROUS PAD,SLIDER,CAP
557
GUIDEPLATE,CABLE
577
BUSHING,FASTEN,COMBINATION GEAR
558
SHEET,CABLE
578
PUSHING NUT,2
559
DETECTOR,HP;E
579
HARNESS,HP
560
CARRIAGE ASSY.
580
HARNESS,PE
561
LEVER,ADJUST
586
C.C.S.SCREW
Parts List
145
EPSON Stylus COLOR 670
Revision A
Table 7-12. Stylus Color 670 Parts List (continued)
Part Number
Appendix
Table 7-12. Stylus Color 670 Parts List (continued)
Description
Part Number
Description
587
C.B.S. SCREW
713
PAD,BREAK,EDGE GUIDE
588
C.P.S-TITE(P4),3X6,F/ZN
714
REINFORCEMENT PLATE,HOPPER
589
LEAF SPRING
716
PAD ASSY.,RIGHT
590
PLANE WASHER,2.6X0.5X8
717
LEVER,PAD,RELEASE,RIGHT
591
CABLE,HEAD,A
718
ROD SPRING,HOLDER,PAD
592
CABLE,HEAD,B
719
HOLDER,EDGEGUIDE,RIGHT
615
PLATE,SLIDER,CLEANER
720
COMPRESSION SPRING,1.17
700
PRINT HEAD
721
EXTENSION SPRING,0.62
701
FASTENER,HEAD
722
LEVER,PAPERRETURN,RIGHT
702
TORSION SPRING,49
723
EXTENSION SPRING,0.294
703
C.B.P-TITE SCREW,3X6,F/ZN
724
ROLLER,LD,SUPPORT
705
HOLDER,CABLE
725
HOLDER,ROLLER,LD,SUPPORT,RIGHT
706
SPACER,CABLE HEAD
726
PAD ASSY.,LEFT
707
FRAME,ASF;B
727
LEVER,PAD,RELEASE,LEFT
708
HOPPER
728
HOLDER,EDGEGUIDE,LEFT
709
EDGEGUIDE
729
LEVER,PAPERRETURN,LEFT
710
CORK
730
HOLDER, ROLLER,LD,SUPPORT,LEFT
711
SLIDER,EDGEGUIDE
731
ROLLER ASSY.,LD,LEFT
712
COMPRESSION SPRING,3.23
732
ROLLER ASSY.,LD,RIGHT
Parts List
146
EPSON Stylus COLOR 670
Revision A
Table 7-12. Stylus Color 670 Parts List (continued)
Part Number
Appendix
Table 7-12. Stylus Color 670 Parts List (continued)
Description
Part Number
Description
733
COVER,ROLLER,LD,LEFT
753
TRAY,PORUSPAD
734
COVER,ROLLER,LD,RIGHT
754
SPACER,TRAY
735
COMPRESSION SPRING,1.961
755
BUSHING,FASTEN,SHAFT,LEFT
736
LEVER,FASTEN,EDGEGUIDE;B
756
PAPER SUPPORT,SUPPORT,UPPER
737
EXTENSION SPRING,0.088
757
HOLDER,PAPER SUPPORT,SUPPORT,UPPER
738
SHAFT,ROLLER,LD
758
EXTENSION SPRING,0.29
739
LEVER,HOPPER,RELEASE
759
COVER,CARTRIDGE,BK;B
740
WHEEL,DETECT
760
COVER,CARTRIDGE,C;C
741
LEVER,BRAKE
761
SEPARATOR,CARTRIDGE,BK
742
PAD,BREAK
762
SEPARATOR,CARTRIDGE,C
743
TORSION SPRING,41.2
763
DETECTOR,HP;E
744
BUSHING,FASTEN,SHAFT
764
CORK;B
745
SHEET,PAPERFEED
765
CLEANER,HEAD,ASP
746
HOLDER,SHEET,PAPERFEED
766
ASF UNIT;C
747
SHAFT,MOUNT,CR
769
SPACER,TRAY,POROUSPAD
748
C.P.S-TITE(P4),3X6,F/ZN
772
HARNESS,ASF
750
SPURGEAR,34
776
SPACER,COVERCARTRIDGE;B
751
PAPERGUIDE,LOWER
777
SHEET,PROTECTION,CABLE
752
POROUSPAD,INKEJECT,LARGE
3
Parts List
PAD SET,PRINTER
147
EPSON Stylus COLOR 670
Revision A
Table 7-12. Stylus Color 670 Parts List (continued)
Part Number
Description
The following pages show the following electric circuits.
4
PAD,ACCESSORY
o C301 MAIN Control Circuit
5
PLASTIC PROTECTIVE BAG
o C301 PSB Power Supplu Circuit
NON FIG
INK CARTRIDGE,B,AS
NON FIG
INK CARTRIDGE,C,AS
NON FIG
SPECIAL COATED PAPER,006,OVERSEAS
NON FIG
SUPPLEMENT
Appendix
7.5 Electric Circuit Diagrams
o C301 PSE Power Supply Circuit
o C209PNL Circuit
Electric Circuit Diagrams
148
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