Epson | Stylus COLOR 480SXU - Ink Jet Printer | Service manual | Epson Stylus COLOR 480SXU - Ink Jet Printer Service manual

SERVICE MANUAL
Color Inkjet Printer
EPSON STYLUS COLOR 480
®
SEIJ00002
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.
About This Manual
This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of EPSON Stylus Photo 720 / Stylus
Photo EX3. 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 dissaembling 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.
APPENDIXProvides 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
Rev. B
Issued Date
Description
May, 11 2000
First Release
18, July 2000
* Page 72: Fig 4-2, Fig 4-3 was revised due the change of the top housing securing screw number.
* Page 76: Fig 4-11, Fig 4-12 was revised due to the addition of the Front Housing (Stacker Guide.)
* Page 139: The Exploded diagram was changed with new figure. The Front Housing (Stacker Guide) was
added in the Exploded diagram.
* Page 141: Ref. Number 108 Front Housing (Stacker Guide) was added in the parts list.
Product Description
Overview....................................................................................................... 10
Features .................................................................................................. 10
Basic Specification ....................................................................................... 11
Printing Specification............................................................................... 11
Paper Specification ................................................................................. 12
Printable Area.......................................................................................... 15
PG Adjust Lever ...................................................................................... 16
Ink Cartridge............................................................................................ 17
Input Data Buffer ..................................................................................... 18
Electric Specification ............................................................................... 18
Reliability ................................................................................................. 18
Safety Approvals ..................................................................................... 18
Acoustic Noise......................................................................................... 18
CE Marking (for 220V - 240V) ................................................................. 19
Environmental Conditions ....................................................................... 19
Interface Specification .................................................................................. 21
IEEE-1284 Parallel I/F (Forward Channel) .............................................. 21
IEEE-1284 Parallel I/F (Reverse Channel).............................................. 22
EEE1284.4 Protocol ................................................................................ 24
Miscellanea ............................................................................................. 25
Receive Data Buffer Full Operation ..............................................................25
Panel-less control & Status Indication..................................................... 25
Error Indication on Status Monitor 3 .............................................................25
Status Monitor 3 function .............................................................................27
Initialization.............................................................................................. 28
Physical Specification................................................................................... 29
Consumables and Options ........................................................................... 30
Operating Principles
Overview....................................................................................................... 32
Printer Mechanism .................................................................................. 32
Printhead ................................................................................................. 33
Printing Process .............................................................................................34
Printing Method .............................................................................................34
Carriage Mechanism ............................................................................... 35
Paper Feeding Mechanism ..................................................................... 36
Paper Loading Mechanism (ASF Unit).................................................... 37
Ink System Mechanism ........................................................................... 40
Pump Unit & Wiper mechanism ....................................................................40
Capping Mechanism ...................................................................................... 41
Ink Sequence .......................................................................................... 41
Printing mode .......................................................................................... 43
......................................................... Electrical Circuit Operating Principles 44
C367 PSB/PSE board ............................................................................. 44
C367MAIN-B Board ................................................................................ 46
Main elements ................................................................................................46
Printhead Driver Circuit ................................................................................. 47
PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit .......................................48
CR Motor Driver Circuit ................................................................................48
Reset Circuit .................................................................................................. 49
EEPROM Control Circuit ..............................................................................49
Sensor Circuit ................................................................................................50
Troubleshooting
Overview ...................................................................................................... 52
Unit Level Troubleshooting........................................................................... 56
Disassembly and Assembly
Overview ......................................................................................................
Precautions .............................................................................................
Tools .......................................................................................................
Work Completion Check .........................................................................
68
68
69
70
Disassembly ................................................................................................. 71
Housing removal ..................................................................................... 72
Printhead removal ................................................................................... 73
CR motor removal ................................................................................... 75
Circuit board removal .............................................................................. 76
Waste drain ink pad unit removal ............................................................ 80
PF motor removal.................................................................................... 81
LD Roller removal ................................................................................... 82
HP/PE/IC Sensor removal....................................................................... 85
Ink system unit removal (Cap & Pump unit ) ........................................... 87
Paper Eject Roller removal ..................................................................... 89
Paper feed roller removal ........................................................................ 91
CR unit removal....................................................................................... 93
Disassembling ASF frame unit ................................................................ 96
Adjustment
Overview..................................................................................................... 100
Required Adjustment............................................................................. 100
Adjustment Program feature ................................................................. 101
Adjustment Program Installation Procedure.......................................... 102
Adjustment Program Initial Setting menu .............................................. 103
Sequential Repair Service Program feature ............................................... 104
Feature .................................................................................................. 104
Printhead removal ................................................................................. 106
Printhead replacement .......................................................................... 108
Main board replacement........................................................................ 111
CR unit replacement or removal............................................................ 115
CR motor replacement or removal ........................................................ 115
Printer mechanism replacement............................................................ 116
Waste ink pad replacement.................................................................. 116
Individual service adjustment program feature........................................... 117
Get status function ................................................................................ 117
Head cleaning function.......................................................................... 117
Initial ink charge function....................................................................... 117
Protection counter check/reset.............................................................. 117
EEPROM check function....................................................................... 118
Refurbishment for DOA ......................................................................... 119
A4 Check pattern................................................................................... 120
Maintenance
Overview..................................................................................................... 122
Cleaning ................................................................................................ 122
Service Maintenance............................................................................. 123
Lubrication............................................................................................. 124
Appendix
Connector Summary................................................................................... 129
Major Component Unit .......................................................................... 129
EEPROM Address Map ........................................................................ 131
Component Layout ..................................................................................... 134
Exploded Diagram...................................................................................... 136
Parts List .................................................................................................... 141
Electrical Circuits........................................................................................ 145
CHAPTER
PRODUCT DESCRIPTION
EPSON Stylus COLOR 480
Revision B
1.1 Overview
Stylus Color 480 is developed newly for the low end product and realize a high quality
graphic printing with the low price.
1.1.1 Features
Major features of this printer are as follows;
o High quality color printing
n 720dpi (H) x 720 dpi(V) dpi printing.
n MACH technology (4 color printing. YMCK)
n Micro wave, Super micro wave printing
n Multi-Shot & Variable dot printing
o Control panel less
Host computer controls the printer.
o Built in I/F
n IEEE-1284 parallel
Windows exclusive printer.
o Small, space-saving
o Built-in auto sheet feeder
n Holds 100 cut-sheets (65g/m2)
n Holds 10 envelopes
n Holds 10 transparency films
Figure 1-1. External View
n Holds 30 special paper
Product Description
Overview
10
EPSON Stylus COLOR 480
Revision B
1.2 Basic Specification
PRINTING DIRECTION
o Bi-direction with logic seeking
1.2.1 Printing Specification
PRINTING SPEED
PRINTING METHOD
o Character mode: Refer to the table below
o On demand ink jet
Table 1-1. Character mode: black only
NOZZLE CONFIGURATION
o Black:
48 nozzles x 1 row
o Color:
45 nozzles x 1 row
15 nozzle is assigned for each 3 colors in the one row.
(Cyan, Magenta, Yellow)
1 7
Printable
Columns
CR Speed
10CPI
LQ
80column
20IPS
Table 1-2. Printing Speed (Raster Graphics Mode)
# Y 1 5
# Y 1
Character
Quality
o Raster graphics mode: Refer to the table below.
2 .2 5 7 8 (3 2 /3 6 0 ")
# B 4 8
Character pitch
Horizontal
Resolution
Printable
Area
Available Dot
CR Speed
Notes
480 dpi
8.26 inch
3968
14.1 IPS
Black mode
360 dpi
8.26 inch
2976
20 IPS
--
720 dpi
8.26 inch
5952
20 IPS
--
CHARACTER SPECIFICATION
# M 1 5
o Character code: None. International character sets is not available. Only following
0 .2 1 1 1 7 (1 /1 2 0 ")
characters are available.
# C 1 5
# B 1
# C 1
# M 1
unit: mm
Figure 1-2. Nozzle Configuration (Seen from the Back of the Head)
Product Description
n ASCII 37 characters + Space code + One Symbol
Alphabet A-Z (Code 41H-5AH)
Number 0-9
(Code 30H-39H)
SPACE
(Code 20H)
Symbol #
(Code 23H)
n Typeface
Bit map LQ font: EPSON Courier 10CPI
Basic Specification
11
EPSON Stylus COLOR 480
Revision B
CONTROL CODE
1.2.2 Paper Specification
o ESC/P for Stylus Color 480
CUT SHEET
o EPSON Remote command
n Size:
A4 (210 x 297 mm)
Letter (216 x 279 mm)
B5 (182 x 257 mm)
Legal (216 x 356 mm)
Statement (139.7mm x 215.9mm)
Executive (190.5 x 254 mm)
PAPER FEED SPECIFICATION
o Feeding Method:
Friction feed with ASF
o Paper Path:
Cut sheet ASF (Top entry - Front out)
o Line Interval:
Programmable by 1/6 inch or 1/360 inch
o Paper Feed Speed:
271.9ms 10 ms (10.16 mm (2/5 inch) at paper feed)
1.67inch/sec (at continuous paper feed)
n Thickness (plain paper):
0.08mm to 0.11mm(0.003 to 0.004”)
n Weight:
64g/m2 to 90g/m2 (17lb to 24lb / 55 to 78 kg)
n Paper quality:
Exclusive paper, Bond paper, Plain paper, recycled paper
n ASF hopper available capacity
100 sheets
C A U T IO N
Product Description
Basic Specification
n No wrinkled, scuffing, torn or folded paper be used.
n No curled paper more than 5mm be used.
12
EPSON Stylus COLOR 480
Revision B
TRANSPARENCY, GLOSSY PAPER
n Size
C A U T IO N
A4 (210mm x 297mm)
Letter (216mm x 279mm)
n Use above mentioned paper at normal temperature.
n
n
n
n
n
n Thickness
0.075mm to 0.085mm
n Quality
(temperature = 15 to 25%, humidity = 40 to 60% RH)
No wrinkled, scuffing, torn or folded paper be used.
No curled paper more than 5mm be used.
No paper with glue on flap be used.
No double envelops nor with window envelops be used.
Do not print on the back.
Exclusive paper
n ASF hopper available capacity
1sheet
INDEX CARD
n Size
A6 Index card (105mm x 148mm)
A5 Index card (148mm x 219mm)
5 x 8” Index Card (127mm x 203mm)
10 x 8” Index card (127mm x 203mm)
NOTE: Transparency printing is available only in the normal temperature
ENVELOPE
n Size:
No.10 (241.3 mm x 104.8 mm)
DL (220 mm x 110 mm)
C6 (162 mm x 114 mm)
4”x 6”(220mm x 132mm)
n Thickness
Less than 0.23mm
n ASF hopper available capacity
30sheets
n Thickness
0.16mm to 0.52mm
n Weight
45g/m2 to 75g/m2
n Quality
Bond paper, Plain paper, Air mail
n ASF hopper available capacity
10sheets
NOTE: * Envelope printing is available only in the normal temperature.
* Keep the longer side of the envelope horizontally at setting.
Product Description
Basic Specification
13
EPSON Stylus COLOR 480
SPECIAL PAPER
Revision B
n Iron-ON Transfer Paper
A4 (210 x 297 mm)
Letter (216 x 279 mm)
Paper type: EPSON exclusive paper
n Photo Quality Ink Jet Paper
A4 (210 x 297 mm)
A6 (105 x 148 mm)*
B5 (182 x 257mm)
Letter (216 x 279 mm)
Legal (216 x 356 mm)
5 x 8” (127 x 203 mm)*1
8 x10” (100 x 148 mm)*1
n Matte Paper
A4 (210 x 297 mm)
Letter (216 x 279 mm)
n High Quality Normal Paper
A4 (210 x 297 mm)
NOTE: *1): Set the enclosed loading support sheet as the last sheet in the ASF.
*2): Set the plain paper as the last sheet in the ASF.
n 360 dpi Ink Jet Paper
A4 (210 x 297 mm)
Letter (216 x 279 mm)
C A U T IO N
n Transparencies *2)
Use above mentioned paper at normal temperature.
(temperature = 15 to 25%, humidity = 40 to 60% RH)
A4 (210 x 297 mm)
Letter (216 x 279 mm)
n Photo Quality Glossy Film*2)
A4 (210 x 297 mm)
A6 (105 x 148 mm)*1
Letter (216 x 279 mm)
n Photo Paper (PP2)
A4 (210 x 297 mm)
Letter (216 x 279 mm)
Photo quality card 2 (100 x 148 mm)*1
Panorama (210 x 594 mm)
4” x 6”(113.6 x 175.4)
100mm x 150mm
200mm x 300mm
n Photo Sticker
A4 (210 x 297 mm)
A6 (105 x 148 mm)
8 “x 10” (100 x 148 mm)*1
Product Description
Basic Specification
14
EPSON Stylus COLOR 480
Revision B
1.2.3 Printable Area
LM
RM
CUT SHEET
Refer to the following table. As for the each margin area, refer to the Figure 1-3
TM
Table 1-3. Printable Area for Cut Sheet
Paper Size
Paper
Width
Paper
Length
LM/RM/
TM
BK Bottom
Margin(*1)
Color Bottom
Margin
(*1,*2)
A4
210mm
297mm
3mm
14 mm or more
than 3 mm
21mm or more
than 3mm
Letter
216mm
279mm
3mm
14 mm or more
than 3 mm
21mm or more
than 3mm
B5
182mm
257mm
3mm
14 mm or more
than 3 mm
21mm or more
than 3mm
Legal
216mm
356mm
3mm
14 mm or more
than 3 mm
21mm or more
than 3mm
Statement
139.7mm
215.9mm
3mm
14 mm or more
than 3 mm
21mm or more
than 3mm
Executive
190.5mm
254mm
3mm
14 mm or more
than 3 mm
21mm or more
than 3mm
NOTE: *1): Bottom margin can be set up to 3mm at minimum when the paper
length is designated with “ESC(S” command.) However, the printing
quality is not guaranteed in the area ranging from 3mm to 14mm, from
the form lower end. When the paper length is not designated, the bottom
margin must be wider than 14 mm.
Printable area
PL
BM
print re
Figure 1-3. Printable Area
*2): Bottom margin for color printing can be set up 3mm at minimum
when the paper length is designated with “ESC(S” command.). However,
guaranteed print area of color printing is narrow than BK
(monochrome)printing. This is due to the each color nozzles is assigned
in the one row nozzles.
Product Description
Basic Specification
15
EPSON Stylus COLOR 480
Revision B
ENVELOP (PRINTABLE AREA)
Refer to the following table.
RM/TM
BK
Bottom
Margin(*1
)
Color
Bottom
Margin
(*1,*2)
28mm
3mm
14 mm or
more than
3 mm
21mm or
more than
3mm
279mm
7mm
3mm
14 mm or
more than
3 mm
21mm or
more than
3mm
257mm
3mm
3mm
14 mm or
more than
3 mm
21mm or
more than
3mm
Paper Size
Paper
Width
Paper
Length
LM
#10
241mm
104.8 mm
DL
216mm
C6
182mm
NOTE: *1): Bottom margin can be set up to 3mm at minimum when the paper
length is designated with “ESC(S” command.) However, the printing
quality is not guaranteed in the area ranging from 3mm to 14mm, from
the form lower end. When the paper length is not designated, the bottom
margin must be wider than 14 mm.
*2): Bottom margin for color printing can be set up 3mm at minimum
when the paper length is designated with “ESC(S” command.). However,
guaranteed print area of color printing is narrow than BK
(monochrome)printing. This is due to the each color nozzles is assigned
in the one row nozzles.
Product Description
R M
L M
Table 1-4. Printable area for Envelop
T M
Printable area
B M
Figure 1-4. Printable area for Envelop
1.2.4 PG Adjust Lever
Unlike other products, this printer dose not have the PG (Platen Gap) adjust lever in the
printer mechanism. So, the Platen Gap value can not be changed according to the paper
thickness.
Basic Specification
16
EPSON Stylus COLOR 480
Revision B
1.2.5 Ink Cartridge
COLOR INK CARTRIDGE
INK CARTRIDGE (BLACK)
o Type:
Exclusive cartridge
o Color:
Magenta, Cyan, Yellow
o Print capacity:
150 pages/A4 (360dpi, 5% duty each color)
o Ink life:
2 years from production date
o Type:
Exclusive cartridge
o Color:
Black
o Print capacity:
270 pages/A4 (ISO/IEC 10561 Letter Pattern at 360dpi)
o Ink life:
2 years from production date
n -30°C to 60°C
o Storage temperature:
Being transported, within 120 hours at 60°C, within a month at 40°C
n -30°C to 60°C
Being transported, within 120 hours at 60°C, within a month at 40°C
n -30°C to 40°C
n -30°C to 40°C
Packing storage, within a month at 40°C
n -20°C to 40°C
Packing storage, within a month at 40°C
Mounted on the printer, within a month at 40°C
n -20°C to 40°C
o Dimension:
Mounted on the printer, within a month at 40°C
o Dimension:
o Storage temperature:
42.9mm (W) x 52.7 mm (D) x 38.5mm (H)
19.8mm (W) x 52.7 mm (D) x 38.5mm (H)
51.2
52.7
51.2
52.7
42.9
19.8
38.5
38.5
18.3
41.4
Figure 1-6. Color Ink Cartridge
Figure 1-5. Black Ink Cartridge
Product Description
Basic Specification
17
EPSON Stylus COLOR 480
Revision B
1.2.6 Input Data Buffer
o Buffer:
o Power consumption:
Approx. 21W (ISO/IEI 10561 Letter pattern)
Approx. 5.5W in standby mode
Energy star compliant
o Insulation Resistance:
10 M ohms min.
(between AC line and chassis, DC 500V)
o Dielectric Strength:
AC 1500 V rms. 1 minute
o Leak Current:
less than 0.75mA (input: 276V/60Hz)
16Kbytes
1.2.7 Electric Specification
120V VERSION
o Rated voltage:
AC 120V
o Input voltage range:
AC 99 -132V
1.2.8 Reliability
o Rated frequency range:
50 - 60Hz
o Total print volume:
o Input frequency range:
49.5-60.5 Hz
: 10000 pages (A4.Letter) (except ESP,EIO,EPC)
: 20000 pages (A4, Letter) (ESP, EIO,EPC)
o Rated current:
0.4A(Max 0.5A)
o Printhead Life:
o Power consumption:
4000 million dots/nozzle
.
Approx. 21W (ISO/IEI 10561 Letter pattern)
Approx. 5W in Standby mode
Energy star compliant
1.2.9 Safety Approvals
o Insulation Resistance:
10 M ohms min.
(between AC line and chassis, DC 500V)
120V VERSION
o Dielectric Strength:
AC 1000 V rms. 1 minute or
AC 1200 V rms 1 second
(between AC line and chassis)
o Leak Current :
o Safeties standards:
UL1950 with D3
CSA C22.2 No.950 with D3
o EMI:
FCC part15 subpart B class B
CSA C108.8 class B
less than 0.25mA(input:100V/50Hz)
less than 0.75mA(input: 138V/60Hz)
220V -240V VERSION
220 - 240V VERSION
o Safety standards:
EN60950(VDE)
EN55022 (CISPR Pub.22) Class B
o EMI:
EN55022 (CISPR Pub.22) Class B
o Rated voltage:
AC 220 - 240V
o Input voltage range:
AC 198 -264V
o Rated frequency range:
50 - 60Hz
o Input frequency range:
1.2.10 Acoustic Noise
49.5-60.5 Hz
o Rated current:
o Level
0.2A (Max. 0.3A)
Product Description
Basic Specification
Approx. 45dB(A) (According to ISO 7779)
18
EPSON Stylus COLOR 480
Revision B
1.2.11 CE Marking (for 220V - 240V)
o Low Voltage Directive 73/23/eec :
ENN60950
o EMC Directive 89/336/EEC
EN55022 Class B
EN61000-3-2
EN610000-3-3
EN50082-1
IEC801-2
IEC801-3
IEC801 -4
:
:
:
:
(%)
80
55
1.2.12 Environmental Conditions
20
TEMPERATURE
10
o Operating:
10 to 35°C (Refer to Figure 1-7)
o Non-operating:
-20 to 60°C (with shipment container)
1 month at 40°C
120hours at 60°C
35
(”C)
tmphumid
Figure 1-7. Environmental Condition
RESISTANCE TO SHOCK
HUMIDITY
o Operating:
1 G, within 1ms (operating)
2G, within 2ms (with shipment container)
o Operating:
20 to 80% RH
without condensation, Refer to Figure 1-7
o Non-operating:
o Non-operating:
5 to 85% RH
without condensation, with shipment container
RESISTANCE TO VIBRATION
The environmental condition should be within the range shown in the figure below.
Product Description
27
o Operating:
0.15G
o Non-operating:
0.50G (with shipment container)
Basic Specification
19
EPSON Stylus COLOR 480
C A U T IO N
Revision B
n When non-operating, make sure the printhead is capped.
n When transporting, make sure the printhead is capped and keep
the ink cartridge mounted on the printer.
n Under the power OFF condition, if the printhead is not capped,
turn ON the printer after installing the ink cartridge, and turn
off the printer after the capping has completed.
n If the printer kept under -40°C, the ink inside the printhead and
inside the ink cartridge will be frozen.
It takes 3 hours at 25°C to recover once frozen ink to be ready for
use.
Product Description
Basic Specification
20
EPSON Stylus COLOR 480
Revision B
1.3 Interface Specification
Table 1-6. Connector Pin Assignment and Signals (F-Channel)
Pin No.
This printer has IEEE-1284 parallel interface and USB interface as standard.
Return
GND Pin
Signal
Name
From
Function Description
11
29
BUSY
Printer
A high signal indicates that the printer cannot
receive data. The signal becomes high under
the condition below;
-Receiving data.
-Error.
-Other I/F receiving data.
12
28
PE
Printer
A high signal indicates paper-out error.
13
28
SLCT
Printer
Always at high level. Pulled up to +5V via
1.0KΩ resistor.
14
30
-AFXT
PC
Not used.
31
30
-INIT
PC
The printer is initialized by the width of min.
50µs Low pulse input.
32
29
-ERROR
PC
A low signal indicates printer error condition.
18
-
Logic H
-Printer
Always at high level. Pulled up to +5V via
3.9KΩ resistor.
35
-
+5V
Printer
Always at high level. Pulled up to +5V via
1.0KΩ resistor.
17
-
Chassis
GND
-
Printer chassis GND.
16, 33
19-30
-
GND
-
Signal GND.
15, 34
-
NC
-
Not used.
36
30
-SLIN
-
Not used.
1.3.1 IEEE-1284 Parallel I/F (Forward Channel)
Forward channel is the mode to transfer the ordinary printing command to the printer
side from the PC side.
Table 1-5. Parallel I/F Specification (F-Channel)
Item
Specification
Transmission mode
8bit parallel
Synchronization
By STROBE pulse supplied from the external
Handshaking
By BUSY and ACKNLG signal
Signal Level
TTL level (IEEE-1284-Level 1 device)
Adaptable connector
36 pin 57-30360 (amphenol) or equivalent
NOTE: I/F cable is recommended to be in minimum length.
The connector pin assignment is described below. For these signals described in the
table, use the twist pair wire and connect the return side to the signal GND.
Table 1-6. Connector Pin Assignment and Signals (F-Channel)
Pin No.
Return
GND Pin
Signal
Name
From
Function Description
1
19
-STROBE
PC
The strobe pulse for the printer to read data.
Pulse width requires min. 0.5µs (500ns).
High at normal condition. Receives data after
shifting Low.
2-9
20-27
Data1-8
PC
The DATA 1 through DATA8 signals
represent data bits 1-8, respectively.
10
28
-ACKNLG
Printer
Product Description
A low signal indicates the printer can accept
data. Pulse width is 0.5 (default) or can be set
at 2µs.
Interface Specification
21
EPSON Stylus COLOR 480
Revision B
1.3.2 IEEE-1284 Parallel I/F (Reverse Channel)
Reverse channel is used to transfer the information data from the printer side to the PC
side.
The connector pin assignment is described in the table below. For these signals
described in the table, use the twist pair wire and connect the return side to the signal
GND.
Table 1-8. Connector Pin Assignment and Signals (F-Channel)
Table 1-7. 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
Logic Level
TTL level (IEEE-1284-Level 1 device)
Data trans. timing
Comply with the IEEE-1284 specification
Extensibility request data
The printer responds affirmatively when the extensibility request
values are 00H or 04H;
00H: Request Nibble Mode Reverse Channel Transfer.
04H: Request Device ID;
Return Data Using Nibble Mode Reverse Channel Transfer
o Device ID
The printer sends following device ID string when it is requested.
[00H] [5AH]
MFG: EPSON;
CMD: ESCPL2, BDC, D4;(*1)
MDL: Stylus[SP]COLOR[SP]480;
CLS: PRINTER;
DES: EPSON[SP]Stylus[SP]COLOR[SP]480;
(*1): When the D4 mode (IEEE1284.4) is OFF, printer reply as follows.
CMD: ESCPL2,BDC
NOTE: [00H] denotes a hexadecimal value of zero.
MDL value depends on the EEPROM setting. Refer to Appendix.
Product Description
Pin No.
Return
GND Pin
Signal Name
From
1
19
HostClk
PC
Host clock signal.
2-9
20-27
Data1-8
PC
The DATA 1 through DATA8 signals
represent data bits 1-8 respectively.
10
28
PtrClk
Printer
Printer clock signal.
11
29
PtrBusy/
DataBit-3,7
Printer
Printer busy signal and reverse channel
transfer data bit 3 or 7.
12
28
AckDataReq/
DataBit-2,6
Printer
Acknowledge data request signal and
reverse channel transfer data bit 2 or 6.
13
28
Xflag/DataBit1,5
Printer
X-flag signal and reverse channel
transfer data bit 1 or 5.
14
30
HostBusy
PC
Host busy signal.
31
30
-INIT
PC
Not used.
32
29
-DataAvail/
DataBit-0,4
Printer
Data available signal and reverse channel
transfer data bit 0 or 4.
18
-
Logic H
Printer
Pulled up to +5V via 3.9K ohm resistor.
35
-
+5V
Printer
Pulled up to +5V via 3.3 K ohm resistor.
17
-
Chassis
-
Printer chassis GND.
16, 33
19-30
-
GND
-
Signal GND
15, 34
-
NC
-
Not used.
36
30
1284-Active
PC
Interface Specification
Function Description
1284 active signal.
22
EPSON Stylus COLOR 480
Revision B
Table 1-9. IEEE1284 Timing Chart
Following lists “Notes” when using the parallel interface.
Parameter
Minimum
Maximum
tsetup
500ns
--
thold
500ns
---
tstb
500ns
---
o Refer to the timing chart for transmission timing of each signals.
tready
0
---
o Do not perform data transmission ignoring -ACK or BUSY signals. (Perform the
tbusy
0
---
tt-out (*1)
---
120ns
tt-in (*2)
---
200ns
treply
0
---
tack
500ns
10us
tnbusy
0
---
tnext
0
---
o “Return GND pin” in the table means twist pair return and is connected to the
signal GND level.
For each signal, use the twist pair wire and connect the return side.
Also, these cables are shielded wires and it is effective means to connect to each
chassis GND in the center machine and printer for electrostatic noise.
data transmission after confirming that either -ACK or BUSY signal is Low)
o It is possible to perform the printing test including interface circuit without using
external equipment when 8-bit data signal (2-9 pin) is set to appropriate character
code (against GND, Open=”1”, Short=”0”) and connect then forcefully to -ACK
and -STRB. However, to perform this, “I/F selection” of EEPROM must be set to
“Auto”. Also, IEEE-1284.4 packet mode must be set Off.
The figure below shows the timing chart of the parallel interface.
DATA
Data byte n
Data byte n+1
thold
/STROBE
tsetup
On the above timing chart, Tack rated period is varies depend on the Parallel I/F data
transmission speed below.
tnext
tstb
(1*): Rise and fall time of every output signals.
(*2): Rise and fall time of every input signals.
BUSY
tready
tbusy
Table 1-10. tact Typical time of Tack
/ACKNLG
treply
tack
tnbusy
Parallel I/F Mode
Typical Time
High speed
2 µs
Normal speed
4 µs
timechart
Figure 1-8. IEEE1284 Timing Chart
Product Description
Interface Specification
23
EPSON Stylus COLOR 480
Revision B
1.3.3 EEE1284.4 Protocol
The packet protocol described by IEEE1284. 4 standard allows a device to carry on
multiple exchanges or conversations which contain data and /or control command with
another device at the same time across a single point-to-point link. The protocol is not,
however. a device control language. It dose 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
IEEE1284.4.
Three function modes of IEEE1284.4 protocol, “On”, “Off” and “Auto” are available
for Parallel I/F, and the setting is defined based on the data stored in the value in
EEPROM address 25<H>.
o On
Communication in IEEE1284.4 packet mode is started by receiving a magic string
(1284.4 synchronous commands). Until a magic string is received, other
commands are discarded. In this setting, the printer can not communicate with
DOS or Windows 3.X environment.
o Off
Communication is carried out in the conventional mode. A magnetic string
(1284.4 synchronous commands) is discarded. And only IEEE1284 nibble
protocol is available.
o Auto
Communication is carried out in the conventional mode until a magic string
(1284.4 synchronous commands) is received. By receiving a magic string,
communication in IEEE1284.4 packet mode is started. If the printer dose not
receive a magic string, the printer communicates the PC by IEEE1284 nibble
mode.
The factory setting for IEEE1284.4 mode is “ON”. But, after complete the initial ink
charge operation, the setting of the EEPROM is set to “AUTO”. The change in this
setting will be effective when the power is back on after the initial ink charge
operation.
Product Description
Interface Specification
24
EPSON Stylus COLOR 480
Revision B
1.3.4 Miscellanea
1.3.5 Panel-less control & Status Indication
1.3.4.1 Receive Data Buffer Full Operation
On this product, the control panel is not assembled in. So, Printer driver utility (STM39
allows to control the printer operation instead of the Control panel and indicates the
printer status include the several errors.
Generally, hosts abandon data transfer to peripherals when a peripheral is in busy state
for dozens of seconds continuously. In order to prevent the long busy status, printer
start receive the data every 1 second when the reset of the input buffer become less than
several hundreds of bytes. The printer will be in busy state continuously when the input
buffer finally gets full. This operation is not IEEE 1284.4 protocol
1.3.5.1 Error Indication on Status Monitor 3
Following printer status is displayed in the STM3 (Status monitor 3).
o Ink End/Low Error
.
When the printer is in the ink end or low condition, the STM3 displays the status.
If the “How to” button is clicked, the Ink Cartridge Replacement Utility runs and it
reads the ink cartridge replacement procedure step by step.
Figure 1-9. Ink low error indication
Figure 1-10. Ink out error indication
Product Description
Interface Specification
25
EPSON Stylus COLOR 480
Revision B
o Paper out Error
o Fatal Error
When the paper is not loaded correctly from the ASF to the PF roller, this error is
displayed on the STM3.
When the general error has occurred, this error is displayed on the STM3.
For example, circuit damage, motor damage...etc.
Figure 1-11. Paper out error indication
Figure 1-13. Fatal Error indication
o Paper jam error
When the paper is jammed between the PE sensor and the Paper eject roller, this
error indication is displayed on the STM3.
o Maintenance Error
When the waste ink counter reaches to the specific counter value, this error is
displayed on the STM3.
Figure 1-12. Paper jam error indication
Figure 1-14. Maintenance Error indication
Product Description
Interface Specification
26
EPSON Stylus COLOR 480
Revision B
o Communication Error
1.3.5.2 Status Monitor 3 function
When the printer can no t communicate with PC, this message is displayed on the
STM3.
STM3 in the Printer driver utility allows to perform the following functions.
o
Nozzle Check Pattern printing
The printer prints the nozzle check pattern and the 6 digits code of the
firmware version & 6 digits code of the CPU Mask version.
o
Head cleaning
o
Bi-d adjustment patter printing
o
Print head alignment adjustment
o
Cancel the Paper out error
When the paper is not loaded correctly, STM3 (status monitor 3) display the
following message and the Paper Error can be canceled by clicking the
“Continue” button in the STM3.
“Paper is not loaded correctly. Reload the paper, then click the “Continue”
button. Click “Cancel” to stop any print jobs.”
o
Cancel the Paper jam error
When the paper is jammed, STM3 display the following message and printer
attempt to eject the Jammed paper by clicking the “EJECT” button.
“Paper is jammed”. Click the “Eject” button to eject any jammed paper.
If paper is still jammed inside the printer, click the “Stop” button, open the
printer cover and remove the paper. Then close the printer cover and click
the “Reset” button.
Moreover, if the “Stop” button is clicked, the printing is stopped and the
“Reset” button is displayed. If once the “Reset” button is clicked, the printer
setting is reset.
o
Ink Cartridge Exchange utility
According to the procedure displayed, I/C can be replaced. In this function,
CR moves to the I/C replacement position automatically and turn back to the
home position after setting the I/C in the CR unit. This function is always
available, not only Ink end or low condition.
o
Printer Setup utility
This utility instructs the printer set up procedure (I/C setting procedure) and
print the nozzle check patter and head cleaning. Additionally, printhead
alignment pattern is printed and allow the user to adjust the bi-d printing
alignment.
Figure 1-15. Communication error indication
Product Description
Interface Specification
27
EPSON Stylus COLOR 480
Revision B
1.3.6 Initialization
The printer have 3 types of initialization. The initialization operations executed by each
initialization method are described below.
HARDWARE INITIALIZATION
This printer initializes itself when it is turned power on or printer recognized the Reset
command (D4 command). On this initialization, following actions are performed.
n Initialize printer mechanism
n Clear the input data buffer
n Clear the print buffer
n Set default values
SOFTWARE INITIALIZATION
Initialization command, “ESC@” also initializes the printer.
On this initialization, following actions are performed.
n Clear the print buffer
n Set default values
POWER ON INITIALIZATION EXCEPT I/F
This printer initializes itself when the printer receive the IEEE1284.4 reset command
or the Parallel I/F cable is disconnected /connected.
On this initialization, following actions are performed.
n Initialize printer mechanism
n Clears the input data buffer
n Clears the print buffer
n Sets default values except I/F setting.
Product Description
Interface Specification
28
EPSON Stylus COLOR 480
Revision B
1.4 Physical Specification
DIMENSIONS
n Stylus Color 480:
431 mm (W) x 311mm (D) x 271mm (H) (Printing)
(
311mm
271mm
431mm
Figure 1-16. Stylus Color 480 Dimensions
WEIGHT
n Stylus Color 480:
Product Description
3.0kg (without the ink cartridges)
Physical Specification
29
EPSON Stylus COLOR 480
Revision B
1.5 Consumables and Options
CONSUMABLE
The consumable for this printer are following;
Table 1-11. Consumables
Classification
No.
Name
S020187
Ink Cartridge (black)
S020193
Ink Cartridge (color)
Consumables
ENCLOSED PARTS
The following parts are enclosed in the Production.
Table 1-12. Enclosed parts
Enclosed Parts
Quantity
User’s manual
1 (paper + CD-ROM)
Driver DISK
1(CD-ROM)\
Black ink cartridge
1
Color Ink cartridge
1
Power Code
1(220-240V version only) *1
NOTE: *1: On the 100-120V version product, the power cable is soldered on the
PS board directly.
Product Description
Consumables and Options
30
CHAPTER
OPERATING PRINCIPLES
EPSON Stylus COLOR 480
Revision B
2.1 Overview
This section describes the operating principles of the printer mechanism and electrical
circuit boards. The Stylus COLOR 480 has only the following two circuit boards and
dose not have control panel:
o Main board:
C367MAIN-B (or C367MAIN) *1
o Power supply board:
C367 PSB/PSE
NOTE: *1): C367MAIN board is used for the product in the first mass
production and it will be changed to C367MAIN-B board at an early
date. The major difference is that C367MAIN-B has one chip CPU
which include the ASCI function. This section describes the operation
principle of C367MAIN-B.
Paper Eject Roller
Star Wheel Roller
PF Roller
CR Timing belt
CR unit
HP/PE/IC Sensor
LD Roller
Paper feed back plate
2.1.1 Printer Mechanism
The printer mechanism for Stylus COLOR 480 is designed newly. But, the basic
component of the printer mechanism is same as previous product.
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 Stylus COLOR 480 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 ASF unit is also designed
newly and single LD roller loads the paper to the printer mechanism.
Paper separation pad
Cap Assembly
ASF Hopper Spring
CR lock lever
Clutch mechanism
For cap assembly, Stylus COLOR 480 uses valveless mechanism; new design for this
model.
PF Motor
Pump Assembly
CR Motor
Figure 2-1. Printer Mechanism block diagram
Operating Principles
Overview
32
EPSON Stylus COLOR 480
Revision B
2.1.2 Printhead
Head Driver Board
The printhead uses a new developed U-CHIPS head and Stylus COLOR 480 can
perform multiple shot printing and variable printing. Printhead nozzle configuration is
as follows.
Ink Cartridge
n 48 nozzles x 1 row: Black (nozzle pitch of the row: 1/120 inch)
Needle
n 45 nozzles x 1 row: Color (nozzle pitch of the row: 1/120 inch)
In the one row for the color, 15 nozzles are assigned for each yellow, magenta,
cyan color)
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, the printhead has its own
head ID (6 digits for this printhead) 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.
Filter
Nozzle Plate
Following explains printhead basic components.
o PZT
PZT
Cavity
Figure 2-2. Printhead Sectional Drawing
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 480
Revision B
2.1.2.1 Printing Process
2.1.2.2 Printing Method
This section explains the process in which the printheads of On-Demand inkjet printers
eject ink from each nozzle.
For print dot system, Stylus COLOR 480 has the following two kinds of printing
modes.
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 C367MAIN-B 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 2.1.2.2.)
Ink Path
PZT
Nozzle
Ink Cavity
n Multiple shot printing
n Variable dot printing
The above two printing modes are automatically selected depending on the media and
the resolution setting of the printer driver. The following explains each printing mode.
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 4 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 on other
products /; 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.
Nozzle plate
PZT drive voltage
Figure 2-3. Printhead printing process
Operating Principles
Overview
34
EPSON Stylus COLOR 480
Revision B
2.1.3 Carriage 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 &
I/C detector (HP/PE/IC sensor) etc. The carriage mechanism moves the carriage back
and forth according to the drive from the carriage motor. The following stepping motor
is mounted to drive CR mechanism. (See the table below.)
CR home position is detected with the HP/PE/IC sensor and the detection plate molded
in the CR unit as following figure. When the CR home position is detected with this
sensor, HIGH signal is output to the CPU.
HP/IC detection Lever
CR HP detection plate
Table 2-1. Carriage Motor Specification
Items
Specifications
Type
4-Phase/ 48-Pole PM Stepping motor
Drive Voltage
+42 V +/ - 5% (DRV IC voltage)
Coil Resistance
10.8 Ω +/ - 10% (per phase at 25 degree)
Inductance
15 mH +/ - 20%(1KH 1VmA)
Drive Method
Bi-Polar drive
Driver IC
LB1845
Right side view
HP/IC detection Lever
CR HP detection plate
High signal
Low signal
Figure 2-5. CR home position
The drive from CR motor is transferred to the CR unit via CR timing belt. And the CR
home position is detected with the HP/PE/IC sensor. This sensor is available as CR HP
detector only in the HP (home position) detection sequence & pump operation
sequence. (not available in the paper feeding sequence for the CR HP detector because
it is used for only PE sensor during the paper feeding sequence.) Moreover, unlike the
previous products, this printer dose not have the PG adjustment mechanism (1.7mm).
HP/PE/ICSensor
Unlike the previous products, I/C detection sensor is not built in the CR unit.
The I/C is detected with the HP/PE/IC sensor and the detection plate molded on the I/C
cover as following figure. The I/C installation condition is monitored only when the
CR unit moves to the I/C detection position (HP detection sequence). So, this sensor
function is not available in the paper feeding sequence. When the I/C is not installed
into the CR unit, HIGH signal is output to the CPU.
HP/IC detection Lever
Right side view
CR Motor
I/C detection plate
HP/IC detection Lever
I/C detection plate
CR unit
CR Guide shaft
CR Timing belt
High signal
Low signal
Figure 2-6. I/C detection position (
Figure 2-4. Carriage Mechanism (Top view)
Operating Principles
Overview
35
EPSON Stylus COLOR 480
Revision B
2.1.4 Paper Feeding Mechanism
Table 2-2. PF Motor Specifications
The paper feeding mechanism consists of Paper feed motor (PF motor), PF roller,
Paper eject roller, Star wheel roller, and so on. The paper feeding mechanism feeds
paper loaded from ASF using the PF roller and Paper Eject Roller & Star wheel roller.
For this mechanism, the PF motor mentioned in the right Table 2-2 is used on this
product.
Item
Description
Motor type
4-Phase/ 48-Pole PM Stepping motor
Drive voltage
+42 V +/ - 5% (DRV IC voltage)
Coil Resistance
10 Ω +/ - 10% (per phase)
The drive of the PF motor is transfer to the PF roller and the Paper Eject Roller as
following Figure 2-7. Following shows you how to transfer the PF motor drive to the
PF roller and the Paper Eject Roller.
Inductance
10.5 mH +/ - 20%(1kH 1Vrms)
Driving method
Bi-Polar drive
o PF motor drive transmission path
Driver IC
LB1845
PF Motor Pinion Gear (CW) → Combination Gear 8.4, 21.6 (CCW) → Combination Gear
9.6, 33.6(CW) → Spur Gear 15 (PF roller)(CCW) → Spur Gear 34.2 (CW) → Spur gear 15
(CCW)
Top view
Right side view
Feeding Paper
Non paper
PF Motor
Spur Gear 35.2
HP/PE/IC Sensor
Paper Guide
Roller
Star Wheel
Combination
Gear 12.6, 18.4
HP/PE/IC
Sensor
Combination
Gear 22.4, 32
Spur Gear 15
(PF Roller)
Change
Lever
Spur Gear 34.2
Paper
PE Sensor Lever
Low signal
High signal
Combination Gear 11.2, 32.4
Paper Feed Roller
Spur Gear 15
Paper Eject Roller
Spur Gear 15.2
PF Pinion Gear
Combination Gear 9.6,33.6
Combination Gear 8.4, 21.6
Figure 2-7. Paper Feeding Mechanism
Paper loaded from ASF is advanced by the following roller.
o Paper feed roller & Paper guide roller (assembled on the Top Frame) → Paper
eject roller & Star wheel roller (assembled on the Paper eject frame).
Operating Principles
Additionally, the top & end of the paper is detected with the HP/PE/IC sensor.
In case the PE sensor dose not detect the paper in the paper loading sequence, the
printer detects the “Paper out error”. If the paper is detected after complete the paper
eject sequence, the printer detects the “Paper jam error”.
Overview
36
EPSON Stylus COLOR 480
Revision B
2.1.5 Paper Loading Mechanism (ASF Unit)
o Transfer the PF motor drive to LD roller
The Paper loading mechanism is positioned at the printer rear. The Paper loading
mechanism loads paper at the ASF unit and feeds paper to the PF roller.
This ASF unit was designed newly for this product and consists of LD roller, Pad
holder (Paper return plate), ASF Frame, Hopper, and so on.
For the major feature of this ASF unit, ASF HP sensor is not used and the single LD
roller is built in the ASF unit.
Drive sent from the PF motor is always transmitted to the ASF unit side. But, the
Change lever and the Clutch mechanism switch ON/OFF the PF motor drive to the LD
roller with the motor rotational direction.
PF Motor pinion gear rotates CW direction→ Combination Gear 8.4, 21.6 (CCW)
→ Combination Gear 11.2, 32.4 (CW)→ Change Lever rotates (CW) →
Combination Gear 22.4, 32 (CCW)→ Spur Gear 35.2(CW) (include the clutch
mechanism) → LD roller (CW).
Following Figure 2-9 shows the PF motor drive transmission path to the LD roller unit
built in the ASF unit. The LD roller is assembled on the same shaft that the Spur gear
35.2 is assembled.
Right side view
Top View
Spur Gear 35.2
Drive from the PF motor is transmitted to the ASF unit as described below:
Combination
Gear 22.4, 32
o Switch the PF motor drive to ASF unit side
PF Motor pinion gear rotates CCW direction with a specific steps → Combination
Gear 8.4, 21.6 (CW) → Combination Gear 11.2, 32.4 (CCW) → Change Lever
rotates (CCW) → Release the Clutch mechanism lock position
Change Lever
Following Figure 2-8 shows you the switching path for PF motor drive to ASF unit
side.
Top View
Right side view
Spur Gear 35.2
Combination
Gear 22.4, 32
Combination
Gear 8.4, 21.6 PF pinion gear
Combination
Gear 11.2, 32.4
Figure 2-9. PF motor drive transmission path
Change Lever
When the PF motor torque is switched to the ASF unit side by the clutch mechanism,
the function of the ASF mechanism varies depending on the rotational direction of the
PF motor, as shown in the table below.
Table 2-3. ASF unit function & PF Motor rotational direction
Combination
Gear 11.2, 32.4
Combination
Gear 8.4, 21.6
Directions
Corresponding Functions
PF pinion gear
Figure 2-8. Switch the PF motor drive to ASF unit side
Clockwise (*1)
• Picks up and loads paper
Counterclockwise (*1)
• Release the DE lever & Clutch mechanism
(*1): The PF Motor rotational direction = seen from the right side of the printer.
Operating Principles
Overview
37
EPSON Stylus COLOR 480
Revision B
o Clutch Mechanism
Unlike the previous products, this product dose not have a ASF HP sensor.
Instead of the ASF HP sensor, Change lever and the Clutch mechanism are used to
detect the ASF home position. Following figures describe the mechanism.
NOTE:
Step1
Spur gear 35.2
Change Lever
Step3
Step2
Clutch gear
LD roller shaft
Tension spring 0.143
The Clutch gear is molded on
the back side of the Spur gear
35.2 such as Combination gear.
Clutch lever
Clutch
Clutch lock tooth
Figure 2-10. Disengage & Clutch mechanism
The Clutch mechanism transmits the PF motor drive to the LD roller shaft only when
the Clutch gear rotates CW direction after the Change lever releases the Clutch lever. If
the Clutch gear rotates CCW direction, the PF motor drive is not transmitted to the LD
roller. This is due to the combination of the shape of the Clutch gear and the Clutch
lock tooth such as described on the figure.
1.
2.
3.
4.
o Paper Return Plate (Pad holder)
Unlike the previous products, The Paper return plate is built in the ASF frame instead
of the Paper return lever. The Paper separation pad is also stacked on the plate.
It works with the spring force of the Torsion spring 28.9 (mounted in the ASF frame)
as following figure.
When the paper is advanced with the PF roller, the Change lever is set on the Clutch
lever and the Clutch is pushed down as above Step1’s figure. As the result, the Clutch
gear (*1) is released from the Cluck lock tooth and the drive from the PF motor is not
transmitted to the LD roller shaft.
LD roller
Paper Return
Plate
When the PF pinion gear rotates CCW direction in the above Step2’s figure, the
Change lever moves to the left direction with the CCW rotation of Combination gear
11.2, 32.4. The Clutch turns back to the engagement position by the tension force of
the Tension spring 0.143 and the Clutch gear is engaged with the Clutch lock tooth as
above Step2’s center figure.
When the PF pinion gear rotates CW direction in the above Step3’s figure, the Change
lever moves to the right direction with the CW rotation of the Combination gear 11.2,
32.4. And the drive from the PF motor is transmitted to the LD roller shaft via Clutch
gear and Clutch lock tooth.
Hopper
ASF frame
Torsion spring 28.8
Compression spring 2.67
Figure 2-11. Paper Return Plate
The Paper return plate is set to return the paper to the paper stand-by position in the
ASF unit when the ASF unit is in the standby mode. When the paper is fed with the
LD roller, the Paper return plate is stored in the ASF frame by the LD roller.
The LD roller shaft rotates about 360 degree and the Change lever push the Clutch
lever and the PF motor drive is interrupted. This position is the ASF home position.
Operating Principles
Overview
38
EPSON Stylus COLOR 480
Revision B
Following figures show you the ASF paper loading sequence and the operation of the
each mechanism.
Step 1
Step 2
LD roller
Hopper
LD roller shaft
Paper return plate
When the paper is advanced with
the PF roller, Change lever push
down the Clutch lever as right
figure and the Clutch lock tooth is
disengaged from the Clutch gear.
As the result, the drive from the PF
motor is interrupted and the LD
roller dose not rotate.
This position is the ASF home
position.
The Paper return plate is set to
avoid that the paper is slipped
down from the paper set position.
Printer front side
Clutch gear
Change lever
Tension spring 0.143
When the paper is loaded (pick up) from
the ASF unit, the Change lever moves to
the printer front side with the CCW
rotation of the PF motor pinion gear and
releases the Clutch lever. As the result,
the Clutch turns back to the engagement
position by the tension force of the
Tension spring 0.143.
And the Clutch lock tooth is engaged
with the Clutch gear as right figure.
Clutch lock tooth
Clutch lever
Clutch
PF motor pinion
gear CW rotation
The PF motor pinion gear rotates
CW direction and the drive from the
PF motor is transmitted to the ASF
LD roller shaft through the Clutch
lock tooth and the Clutch gear.
The ASF hopper release lever rotates
with the ASF LD roller and release
the ASF Hopper. The ASF hopper is
pushed with the Compression spring
2.67 and the paper is picked up with
the ASF LD roller.
PF motor pinion
gear CCW rotation
Step 3
Step 4
Compression
spring 2.67
ASF Hopper
release lever
ASF Frame
Paper return plate
The ASF LD roller rotates CW direction
moreover and the Paper return plate is
stored under the ASF frame.
The paper is advanced up to the PF roller.
and the ASF LD roller & the clutch rotate
to the “Step1” position. The Clutch lever
is locked with the Change lever.
The drive from the PF motor is
interrupted and the drive is transmitted to
the PF roller side.
LD roller shaft
PF motor pinion
gear CW rotation
ASF hopper
release lever
PF motor pinion
gear CW rotation
Figure 2-12. ASF Paper Loading Sequence
Operating Principles
Overview
39
EPSON Stylus COLOR 480
Revision B
2.1.6 Ink System Mechanism
Table 2-4. PF motor rotational direction & Ink System Mechanism
Directions
Functions
Ink system mechanism consists of pump unit (include the CR lock lever) and capping
mechanism. 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.
Counterclockwise (*1)
• Sets the wiper.
• Absorbs ink by the pump unit
• Set the CR lock lever
2.1.6.1 Pump Unit & Wiper mechanism
Clockwise (*1)
• Resets the wiper.
The pump unit is driven by PF motor. PF motor drive is always transmitted to the paper
feeding mechanism and pump unit through the following gears. Refer to the Figure
2-14.
(*1): The PF Motor rotational direction = seen from the right side of the printer.
Following figure shows the overview of the pump mechanism operation.
PF Motor Pinion Gear (CW) → Combination Gear 8.4, 21.6 (CCW) → Combination Gear
9.6, 33.6 (CW) → Spur Gear 15 (PF Roller Gear) (CCW) → Spur Gear 34.2 (CW) → Spur
gear 15 (CCW) → Combination Gear 12.6, 18.4 (CW)→ Spur Gear 15.2 (CCW)
(Pump unit)
The Pump unit and Wiper mechanism drives according to the PF motor rotational
direction, as shown in the right table.
Figure 2-13. Pump mechanism
PF Motor
Spur Gear 15
Star Wheel
(PF Roller)
Spur Gear 34.2
Combination
Paper Guide
Roller
Gear 12.6, 18.4
Wiper
CR lock lever
Pump unit
Cap unit
Spur Gear 15.2
(Pump unit)
PF Pinion Gear
Spur gear 15
Combination Gear 9.6, 33.6
Combination Gear 8.4, 21.6
Figure 2-14. PF motor drive transmission path to the Pump unit
Operating Principles
Overview
40
EPSON Stylus COLOR 480
Revision B
2.1.6.2 Capping Mechanism
2.1.7 Ink Sequence
The capping mechanism covers the printheads with the cap holder to prevent the nozzle
from increasing viscosity when the printer is in stand-by mode or when the printer is
off. This product has valveless cap system. Air valve function used for the previous
models pumps and ejects ink only inside the cap by absorbing ink with the valve open.
By opening the Air valve, the negative pressure is decreased and only the ink inside the
cap is ejected. (the ink is not absorbed from Ink cartridge or head cavity.)
But, valveless cap system, this operation is done out side of the capping area.
The CR moves to left side of the Cap assembly and the pump absorbs the ink inside the
cap.
o Initial ink charge
After the product is purchased and the printer is turned on for the first time, the
printer must be performed 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 480 takes 110 seconds to complete the initial
ink charge sequence and consume about half of the brand-new black ink cartridge.
o Manual Cleaning
Viewed from front side
CR unit
Unlike the previous models, the manual CL is available only though the utility
included in the printer driver because this printer dose not have control panel.
Stylus COLOR 480 provides three types of manual cleaning to clean air bubbled
or clogged ink with viscosity or foreign substances.
The following manual CL sequences can be executed by the utility included in the
printer driver.
n CL1
Slider cap
- Ink absorption
Black Ink: 0.21ml, Color Ink: 0.21ml
Printhead
-Wiping operation
Wipes nozzle plate by the rubber part on the right half of the wiper.
Cap
Slide up
-Flashing operation
Prevents color from mixing. Stabilizes ink surface inside the nozzle.
Waste Ink tube
n CL1’
Figure 2-15. Cap Mechanism
- Ink absorption
Black Ink:1.02ml, Color Ink: 1.02ml
-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
41
EPSON Stylus COLOR 480
Revision B
n CL2
o Flashing
- Ink absorption
Black Ink: 0.51ml, Color Ink: 0.51ml
This printer performs the following two kinds of the Flashing for the following
purpose.
n Periodical Flashing
-Wiping operation
Wipes nozzle plate by the rubber part on the right half of the wiper.
This is due to avoid the increment of both ink’s viscosity in the printhead nozzle
during the continuous printing and the specific small amount of the ink is ejected
in the cap based on the periodical flashing timer.
-Flashing operation
Prevents color from mixing. Stabilizes ink surface inside the nozzle.
The above mentioned manual CL is executed by performing nozzle check pattern and
manual CL alternately. The cleaning order is CL1→ CL1’→ CL2→ CL1.
Like the previous products, CL1 is selected automatically and performed in case any
print check is not executed between each manual CL. Additionally, if the manual CL is
performed with over 5 pages printing cycle, CL1 is always selected and performed.
n Periodical large amount Flashing
This is due to avoid the increment of black ink’s viscosity in the printhead nozzle
during the continuous printing and large amount of the ink is ejected in the cap
based on the periodical large mount flashing timer.
Additionally, if either black or color I/C is ink low or end condition, any manual
cleaning is prohibited and it is displayed on the STM3.
o Timer Cleaning
Unlike the previous product, this printer dose not have Timer IC and Lithium battery
which is used for the backup power source for Timer IC. So, this printer manages the
printer off period or cleaning cycle by using the following method.
The printer driver sends the time command to the printer every D4 command
transportation. The time command is generated based on the PC’s timer and it consists
of year and month, date, hour, minutes, second. As soon as the printer receives the
time command from the printer driver, it is compared with the latest cleaning time
which is stored in the 6A<H>, 6B<H> address of the EEPROM. And if the timer
cleaning period is over the specific period, the printer perform the timer cleaning
automatically and store the time command in the 6A<H>,6B<H> address of the
EEPROM. In case the timer cleaning period is not over the specific period, the time
command is not stored in the EEPROM and it is abandoned. Maximum 0.48ml of the
ink is consumed in the Timer cleaning. (0.24ml of each black and color ink is
consumed.)
Operating Principles
Overview
42
EPSON Stylus COLOR 480
Revision B
2.1.8 Printing mode
Table 2-6. Printing mode for Black mode
The print resolution and printing method are determined automatically by setting the
media type and print quality (It is able to set by slider bar) in the printer driver as
following table. Following table show you the detail setting in the “Auto” mode.
Slide bar
Resolution
Print mode
High
Speed*1
Micro
weave
Dot size*2
Speed
120 x 120
Economy
ON
OFF
ND-3dot
Default
480 x 240
Normal 240
ON
ON
MSD1
Quality
360 x 720
Fine 360
ON
ON
MSD2
N/A
360 x 360
Normal 360
OFF
ON
MSD2
Default
360 x 720
Fine 360
OFF
ON
MSD2
Quality
720 x 720
Photo 720
OFF
ON
VSD 6pl
Default
360 x 720
Fine 360
OFF
ON
MSD2
Quality
720 x 720
Photo 720
OFF
ON
VSD 6pl
Default
360 x 720
Fine 360
OFF
ON
MSD2
Quality
720 x 720
Photo 720
OFF
ON
VSD 6pl
Photo Quality
Glossy Film
N/A
720 x 720
Photo 720
OFF
ON
VSD 6pl
Ink Jet
transparencies
N/A
360 x 360
Normal 360
OFF
ON
MSD2
Print media
Table 2-5. Printing mode for Color mode
Print media
Plain paper
360 dpi Ink jet
paper
Plain paper
Slide bar
Resolution
Print mode
High
Speed*1
Micro
weave
Dot size*2
Speed
120 x 120
Economy
ON
OFF
ND-3dot
Default
360 x 360
Normal 360
ON
ON
MSD2
Quality
720 x 720
Photo 720
ON
ON
VSD 6pl
N/A
360 x 360
Normal 360
OFF
ON
MSD2
Default
360 x 720
Fine 360
OFF
ON
MSD2
Quality
720 x 720
Photo 720
OFF
ON
VSD 6pl
360 dpi Ink jet
paper
Photo Quality
ink jet paper
Matte PaperHeavyweight
Photo Quality
ink jet paper
Default
360 x 720
Fine 360
OFF
ON
MSD2
Quality
720 x 720
Photo 720
OFF
ON
VSD 6pl
Default
360 x 720
Fine 360
OFF
ON
MSD2
Quality
720 x 720
Photo 720
OFF
ON
VSD 6pl
Photo Quality
Glossy Film
N/A
720 x 720
Photo 720
OFF
ON
VSD 6pl
Ink Jet
transparencies
N/A
360 x 360
Normal 360
OFF
ON
MSD2
Photo paper
Matte PaperHeavyweight
Photo paper
NOTE: *1: High speed means Bi-directional printing.
*2: ND means Normal dot. MS means Multi Shot Dot.
VSD means Variable Shot dot.
NOTE: *1: High speed means Bi-directional printing.
*2: ND means Normal dot. MS means Multi Shot Dot.
VSD means Variable Shot dot.
Operating Principles
Overview
43
EPSON Stylus COLOR 480
Revision B
2.2 Electrical Circuit Operating Principles
The electric circuit of the Stylus COLOR 480 consists of the following boards.
o Main board:
C367MAIN-B Board (C367MAIN Board*1)
o Power supply board:
C367 PSB/PSE Board
The power supply boards of Stylus COLOR 480 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. Application of the DC Voltages
NOTE: C367MAIN board is used for the product in the first mass production
and it will be changed to C367MAIN-B board at an early date.
The major difference is that C367MAIN-B has one chip CPU which
include the ASCI function. This section describes the operation
principle of C367MAIN-B
This section provides operating principles of C367MAIN-B Board and C367 PSB/PSE
Board. Refer to Figure 2-16 for the major connection of the each boards and their
roles.
P r in te r M e c h a n is m
C 3 6 7 M A IN -B B o a rd
2.2.1 C367 PSB/PSE board
C R M o to r
P F M o to r
H e a d D r iv e r B o a r d
Voltage
Application
+42VDC
• Motors (CR Motor, PF Motor)
• Printhead common voltage
• Printhead nozzle selector 42V drive voltage
+5VDC
• C367MAIN control circuit logic
• Sensor
This printer dose not have the Power SW. So, the printer is turned on when the AC
cable is connected to the AC inlet. If the AC cable is disconnected from the AC inlet,
this power supply circuit supply 5 voltage for approximately 70us to keep the logic
circuit.
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.
H P /P E /IC S e n s o r
+ 5 V D C
+ 4 2 V D C
C 3 6 7 P S B /P S E
B o a rd
Figure 2-16. Electric Circuit
Operating Principles
Electrical Circuit Operating Principles
44
EPSON Stylus COLOR 480
Revision B
+ 4 2 V D C
+ 5 V D C
The output voltage line is monitored by ZD52,ZD87. If the output level of the
voltage level of +42DC line exceeds +48V, this circuit stops the operation of the
switching FET Q1 via PC1,Q82,Q83 and prevents high voltage from applied to the
secondary side
+ 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
+ 4 2 V D C o v e r
c u r r e n t p r o te c tio n
o +42Vline over voltage protection circuit:
Z D 5 3
Z D 5 2 ,8 7
+ 4 2 V D C L in e
O v e r V o lta g e
L im ita tio n
F 5 1
o +42Vline over current protection circuit:
The output voltage is monitored by the F51. When the abnormal current is
detected by F51, F51 is fused and cut off the +42V line output to the Main board
R 9 2 ,R 9 3 ,Q 9 1 ,Z D 5 1
+ 4 2 V D C L in e
C o n s ta n t C o n tro l
o +5V line constant voltage control circuit/+5V line over current protection circuit:
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.
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
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
O v e r C u rre n t
P r o te c tio n
F 1
Q 2 ,Q 3
Q 1
S m o o th in g
C ir c u it
F ilte r C ir c iu t
L 1
o +5V line over voltage protection circuit:
The output voltage level of the +5V line is monitored by ZD53.
If the output level of the voltage level of +5DC line exceeds +7V, this circuit
stops the operation of the switching FET via PC1,Q82,Q83and prevents high
voltage from applied to the secondary side.
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 2-17. C301PSB/PSE Board Block Diagram
The C367 PSB/PSE board has the various control circuits to stop voltage output if a
malfunction occurs on the power supply board or the main board while the printer
mechanism is on duty. Following explains each control and protection circuit.
o +42V line constant voltage control circuit:
The output level of +42V line is monitored by a R92, R93,Q91,ZD51.
When + 42V line reaches about 42.5V, ZD51 has a continuity with and PC1 start
the operation via Q91. Consequently, Q1 switching operation is controlled by this
circuit to stabilize the 42V line.
Operating Principles
Electrical Circuit Operating Principles
45
EPSON Stylus COLOR 480
Revision B
2.2.2 C367MAIN-B Board
2.2.2.1 Main elements
The printer mechanism is controlled by C367MAIN-B. On this MAIN board, 3.3V
regulator IC is not mounted and all IC is driven with 5.0 V.
See Figure for the C367MAIN-B board block diagram.
Table 2-8 shows the function of the each main elements on C367MAIN-B.
A d d re s s
P -R O M 4 M
(IC 3 )
D a ta
D -R A M 1 M
(IC 4 )
R e s e t IC
(IC 6 )
E E P R O M
(IC 5 )
E 0 1 A 1 4 N A
C P U (IC 1 )
C R 2
IC
Location
Function
CPU
E01A14NA
IC1
16bit CPU mounted on the MAIN board is driven by
clock frequency 24MHz and controls the printer.
PROM
IC3
• Capacity 4MB, Bus= 16 bit
• Program for CPU
RAM
IC4
Bus= 16 bit, 1Mbit DRAM
IC5
1kbit EEPROM
• Default value setting
• Parameter backup
LA5623M
IC6
Reset IC
• For +5V; reset when +4.2V is detected
• For +42V, reset when +33.2 is detected
E09A17RA
IC7
Head drive control HIC
• Generates head common voltage.
LB1845
IC8
CR motor drive IC
LB1845
IC9
PF motor drive IC
74LS07
IC10
IEEE1284 parallel I/F transceiver IC.
AT93C46
C N
M o to r D r iv e r
(IC 8 )
C N
M o to r D r iv e r
(IC 9 )
C N 3
C o m m o n D r iv e r
( IC 7 )
Table 2-8. Main Elements
Q 1 &
Q 2
P a r a lle l I/F IC
(IC 1 0 )
H P /P E /IC S e n
1
2
C R
M o to r
P F M o to r
H
C N 4
e a d
C N 6 P a r a lle l I/F
Figure 2-18. Block Diagram for the C367MAIN-B Board
Following shows you the major characteristic of this main board.
o Timer IC & Lithium battery are not mounted
Unlike the previous products, the Timer IC and the Lithium battery are not
mounted on the Main board. So, this product perform the Power-on cleaning or
Timer cleaning based on the time command which is sent from the printer driver.
As for the detail, refer to the 2.1.7 Ink Sequence.
o D-RAM
1Mbit D-RAM is mounted on the Main board.
o One CPU controls the all function on the main board.
Operating Principles
Electrical Circuit Operating Principles
46
EPSON Stylus COLOR 480
Revision B
o Head common driver circuit
2.2.2.2 Printhead Driver Circuit
The printhead drive circuit consists of the following two components:
n Head common driver circuit
(Common driver IC7 & Wave amplifier transistor Q1, Q2)
n Nozzle selector IC on the printhead driver board.
The common driver (IC7) generates a reference drive waveform according to the
output signals from the CPU (IC1). The reference drive waveform is amplified by the
transistors Q1 and Q2 and then transferred to the nozzle selector IC on the printhead
circuit board. Print data is converted to serial data by the CPU and then sent to the
nozzle selector IC on the printhead circuit 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 generated by the common driver. See Figure 2-19 for the
printhead driver circuit block diagram.
+ 4 2 V
+ 5 V
1 3
V D D
F 1
H W A
H W A
H W A
H W A
IC
4 7 2
4 6 2
4 5 2
4 3 2
0
1
2
3
8
6
A 2
5
A 3
1 6
L K 1
L K 2
L R
S T
D A T A
C L K
L A T
4 0
3
3 8
5
3 9
3 7
4 8
4 9
H W L A T
H S 0 1
H S 0 2
H C L K
G
H
0
P
4 1
2 5
3 0
2 8
2 7
2 6
2 4
2 9
2 2
C L
C L
F L
R S
D A
D C
4
6
2 9
3 0
1 E
K 1
K 2
O O R
T
T A
L K
Printing data are allocated to the two rows, the number of the head nozzle rows,
and converted into serial data by the CPU (IC1). Then the converted data is
transferred to the nozzle selector IC through the two signal lines (SI0 to SI2).
Data transmission from the CPU 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.
C O M
1 4
7
C o m m o m
D r iv e r IC
o Head nozzle selector circuit
V H V
1 5
IC
E 0 1 A 1 4 N A
H N C H
H C
H S
A N
2 2
2 3
N P N B 2 0
F B 1 8
1 6
P N P B
A 1
1
H W C
H W C
H W F
H W R
H W S
H W S
H W S
V C C 4 5
V C C 4 5 _ 2
A O
7
The reference head drive waveform is generated in the common driver (IC7) based
on the following 11 signal lines output from the CPU (IC1); A0-A3, CLK1, CLK2,
FLOOR, RST, DATA, DCLK, and E.
Based on the DATA signal output from the CPU (IC1), the original data for the
head drive waveform is written in the memory in the common driver (IC7).
The addresses for the written data are determined by the A0 - A3 signals, and, of
among, data used to determine the waveform angles is selected and appropriate
head driver waveform is generated. Generated head drive waveform is transferred
to nozzle selector IC on the head driver board and applied to the nozzle PZT
specified by nozzle selector IC.
G N D 2
3
5
9
C N 4
7
G N
G N
G N
G N
D
D
H e a d D r iv e
P u ls e
D
D
N o z z le S e le c o r IC
IR 2 C 9 6 F
1 2
1 0
6
5
2
1 1
1
4
L A T
S I1
S I2
S C K
N C H G
C H
S P
T H M
Figure 2-19. Printhead Driver Circuit
Operating Principles
Electrical Circuit Operating Principles
47
EPSON Stylus COLOR 480
Revision B
2.2.2.3 PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit
2.2.2.4 CR Motor Driver Circuit
The motor driver IC (IC9) on the MAIN board drives PF motor. This product uses 4phase 48-pole hybrid type stepping motor and performs constant current bi-polar drive.
The motor driver IC (IC8) on the MAIN board drives PF motor. This product uses 4phase 48-pole hybrid type stepping motor and performs constant current bi-polar drive.
CPU (IC1) converts PF motor phase control signal to LB1845 micro step drive form
and outputs to motor driver IC (IC9) LB1845 from port 12, 17. Based on this signal,
IC9 determines the phase mode.
CPU (IC1) converts PF motor phase control signal to LB1845 micro step drive form
and outputs to motor driver IC (IC8) LB1845 from port 139, 144. Based on this signal,
IC8 determines the phase mode.
The current value on each phase is determined by CPU (IC1) and outputs from port 13,
14, 15, 16, to driver IC (IC9). Motor driver IC generates motor driver waveform based
on these input signals and controls the motor. If the printer dose not receive any data
from PC for 5 minutes, CPU set the motor drive current to 0 via port 13, 14,15,16 and
the motor drive is turned off to save the power consumption.
The current value on each phase is determined by CPU (IC1) and outputs from port
140, 141, 142, 143, to driver IC (IC8). Motor driver IC generates motor driver
waveform based on these input signals and controls the motor. If the printer dose not
receive any data from PC for 5 minutes, CPU set the motor drive current to 0 via port
140, 141,142,143 and the motor drive is turned off to save the power consumption.
E 0 1 A 1 4 N A
(IC 1 )
P F IA 2
P F IA 3
P F IB 2
P F IB 3
1 4
L B 1 8 4 5
(IC 9 )
2 2
1 3
2 3
1 5
2 1
1 6
2 0
I0 1
P F V 2
C R IA 3
I0 2
C R IB 2
C N 3
I1 2
E N A B L E 1
1 9
P F P H A B
C R IA 2
I1 1
2 4
P F P H A A
E 0 1 A 1 4 N A
(IC 1 )
7
O U T 1 A
2 5
P H 1
1 7
1 8
P H 2
O U T 1 B
V R E F 2
2 7
O U T 2 B
8
I1 1
1 4 2
2 1
I0 2
1 4 3
2 0
I1 2
C R P H A A
B /
R o to r
2
C R P H A B
1 3 9
1 4 4
M T V 2
2 4
E N A B L E 1
1 9
E N A B L E 2
2 5
P H 1
1 8
P H 2
V R E F 2
2 7
1 3
1 2
B
9
8
B /
R o to r
2
4
S E N 1
3
E 1
O U T 2 B
3
A /
R C 2
2
Figure 2-20. PF Motor Driver Circuit Block Diagram
6
R C 1
1 6
E 2
1
A
O U T 1 B
V R E F 1
1 7
S E N 2
O U T 1 A
O U T 2 A
2 6
4
C N 2
7
3
S E N 1
3
Operating Principles
I0 1
2 3
R C 2
2
1 2
9
2 2
1 4 0
R C 1
1 6
1 3
B
O U T 2 A
V R E F 1
1 7
3
A /
7
2 6
1 4 1
1
A
6
E N A B L E 2
1 2
C R IB 3
L B 1 8 4 5
(IC 8 )
E 1
S E N 2
E 2
Figure 2-21. CR Motor Driver Circuit Block Diagram
Electrical Circuit Operating Principles
48
EPSON Stylus COLOR 480
Revision B
2.2.2.5 Reset Circuit
2.2.2.6 EEPROM Control Circuit
Reset circuits consist of the rest IC (IC6). Reset circuits are mounted on the MAIN
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). 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 4.2V or
lower or +42V line becomes 33.2V or lower.
Since EEPROM is nonvolatile memory, it keeps written information if the printer
power is turned off. When the printer is turned ON, CPU (IC1) reads data from
EEPROM (IC5) and when the power is turned OFF it stores data to EEPROM.
Unlike the previous products, the timer IC is not built in the reset IC and the Lithium
battery also is not equipped on the main board.
Information stored in EEPROM is listed below.
n Various ink counter (I/C consumption counter, waste pad counter, etc.)
n Mechanical setting value (Head ID, Bi-D adjustment, USB ID, etc.)
See Table 7-7, “EEPROM Address Map,” on page 131 that provides detailed
information on the values stored in EEPROM.
.
+ 4 2 V
IC 6
L A 5 6 2 3 M -T E -L
1
2
3
4
N C 1
M R E S
IN
V C C
N C 2
O U T 1
G N D
O U T 2
IC 1
E 0 1 A 1 4 N A
8
1 2 8
8
P 8 5
7
7
1 2 9
6
5
1 3 0
6
N M I
5
X R E S E T
E 0 1 A 1 4 N A
(IC 1 )
A T 9 3 C 4 6
(IC 5 )
+ 5 V
+ 5 V
V C C
C S
N C
S K
D I
O R G
G N D
D O
1
1 3 5
2
1 3 4
3
1 3 3
4
1 3 2
E C S
E C K
E D I
E D O
Figure 2-23. EEPROM Circuit Diagram
Figure 2-22. Reset Circuit Block Diagram
Main signal lines are explained below;
n
n
n
n
EEPROM is connected to CPU with 4 lines and each line has the following function.
n CS:
Chip selection signal
n CK:
Data synchronism clock pulse
OUT1:
Interrupt signal
n DI:
Data writing line (serial data) at power off.
OUT2:
Reset line
n DO:
Data reading line (serial data) at power on.
IN:
+42V line monitoring line
VCC:
+5V line monitoring line
Operating Principles
Electrical Circuit Operating Principles
49
EPSON Stylus COLOR 480
Revision B
2.2.2.7 Sensor Circuit
The block diagram for the sensor circuit is shown below
C367MAIN-B is equipped with the following two sensors to detect the status of the
printer. Unlike the previous product, ASF HP sensor is not equipped on the ASF and
the ASF HP is determined with the clutch mechanism (2.1.4 Paper Feeding
Mechanism).
:
IC 1
E 0 1 A 1 4 N A
This sensor uses photo interrupter method and detects the following three status.
The photo interrupt component and two detection levers consists of this sensor.
+ 5 V
S W H P P E
n CR home position
H P P V
3
+ 5 V
o HP/PE/IC Sensor
G N D
2
+ 5 V
H P P E
1
3 2
The CR home position is detected on the right edge of the CR shaft with the HP/
PE/IC sensor during the power on sequence. In case the CR home position is
detected in the power on sequence, this sensor outputs HIGH signal to the CPU.
When the LOW signal is output to the CPU in the detection position, the CR unit
is out of home position.
n .Ink cartridge installation condition.
G N D
A N 0
When the printer is powered on, the CR unit moves to the left side with the
specific steps. And in case the plate molded on the Ink cartridge cover push the
sensor detection lever, the sensor detects that the ink cartridge is not installed in
the CR unit and outputs HIGH signal.
When the ink cartridge is installed in the CR unit, the plate molded on the ink
cartridge cover dose not contacts with the sensor detection lever and the LOW
signal is outputs to the CPU. The Ink cartridge installation condition is monitored
in the ink cartridge replacement sequence also.
2 2
C N 1
H P /P E /IC S e n s o r
1
C N 4
H e a d F F C
T H M
Figure 2-24. Sensor Circuit Diagram
n Paper Top & End position
When the Paper is in the paper path, this sensor outputs the HIGH signal.
When the Paper is not in the paper path, this sensor outputs the LOW signal.
This status is always monitored during the printer is in the power on status with
this sensor.
o Thermistor (THM)
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 CPU analog port. When the temperature rises, the head drive
circuit lowers the drive voltage: When the temperature lowers, the head drive
circuit rises the drive voltage.
Operating Principles
Electrical Circuit Operating Principles
50
CHAPTER
TROUBLESHOOTING
EPSON Stylus COLOR 480
Revision B
3.1 Overview
Table 3-1. Motor, Coil Resistance
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.
Motor
Location
Check Point
Resistance
CR Motor
CN2
Pin 1 and 3
Pin 2 and 4
10.8 Ohms ± 10%
(at 25 °C/ phase)
PF Motor
CN3
Pin 1 and 3
Pin 2 and 4
10 Ohms ±10%
(at 25 °C/ phase)
START
Table 3-2. Sensor Check Point
Sensor Name
Unit level Troubleshooting
Check Point
Signal Level
Switch Mode
Less than 0.7V
Off
• Out of HP range
• No paper
• Detect the I/C
More than 2.4V
On
• Within HP range
• Detect the paper
• Not detects the I/C
Analog signal
10 K (at 24 °C)
Unit repair
HP/PE/IC Sensor
CN1/Pin 1 and 2
Assemble & Adjustment
Thermistor
(THM)
END
TH1 (on the Head
driver board)
Figure 3-1. Troubleshooting Flowchart
Troubleshooting
Overview
52
EPSON Stylus COLOR 480
Revision B
Table 3-4. Error indication
Table 3-3. Error Indication
Condition
Status Monitor 3 Indication
• No Paper
• Paper is not
loaded correctly
Generic
Remedy
Condition
1) Reload the
paper, then
click the
“Continue”
button.
2) If you want
cancel the print
job, click the
“Cancel”
button.
• Ink Out
Figure 3-2. Paper is not loaded correctly
• Paper Jam
Figure 3-3. Paper Jam
Troubleshooting
Status Monitor 3 Indication
Generic
Remedy
1) Click the
“How to”
button and
replace the I/C
by following
the procedure.
Figure 3-4. Ink out
1) Click the
“Eject” button
to eject any
jammed paper.
2) If the paper
is still jammed
inside the
printer, click
the “Stop”
button to
cancel the print
job. Then,
open the
printer cover
and remove the
jammed paper.
• Ink Low
Overview
1) Click the
“How to”
button and
replace the I/C
by following
the procedure.
Figure 3-5. Ink low
NOTE: If this error is indicated on the
monitor, you can continue the
printing until the I/C becomes ink
out condition. However, the head
cleaning operation can not be
done so that the remaining ink is
low condition. Refer to Figure 3-6
on the next page.
53
EPSON Stylus COLOR 480
Revision B
Table 3-6. Error indication
Table 3-5. Error indication
Condition
Status Monitor 3 Indication
• Head cleaning
can not be
completed.
Generic
Remedy
Condition
• Communication
Error
Click “Yes”
button and
replace the
I/C by
following the
procedure.
Figure 3-6. Head cleaning caution
• Head alignment
(bi-d) was not
performed.
Status Monitor 3 Indication
Figure 3-8. Communication error
Use the Print
head alignment
utility on the
printer driver
utility menu to
align the print
head.
• General Error
Troubleshooting
1) Check the
correct printer
driver is
selected in the
printer setting.
2) Check the
parallel I/F
cable is
connected
correctly.
3) Disconnect
the AC cable
and connect it
again.
Motors or
circuit boards
may be broken.
Find out the
failure parts by
referring to the
“Unit level
troubleshootin
g”.
Figure 3-7. Print head alignment was
not performed
NOTE: This error message is indicated
only this adjustment was not
performed in the Set up utility.
Once, this adjustment is
performed, this indication is not
indicated again.
Generic
Remedy
Figure 3-9. General error
Overview
54
EPSON Stylus COLOR 480
Revision B
Table 3-7. Error Indication
Generic
Condition
Status Monitor 3 Indication
Remedy
• Waste Ink pad
overflow Error.
Figure 3-10. Waste Ink Error
Troubleshooting
Replace the
Waste drain
ink pad with
new one and
reset the Waste
drain ink pad
counter
(Protection
counter A) by
using the
Service
Adjustment
program.
Overview
55
EPSON Stylus COLOR 480
Revision B
3.2 Unit Level Troubleshooting
Table 3-8. Symptoms and possible cause (continued)
You can identify the troubles, using the checklist in this section and then find defective
parts. When you find out defective parts, replace them by referring the Chapter 4
“Disassembling.”
In your repair activity, connect the printer to your PC and check the Status monitor 3
by identify the trouble because this printer dose not have control panel. Based on the
Status monitor 3 indication or phenomenon, check the printer more detail by referring
the corresponding check table.
Symptom
Possible Cause
General error indication on
the STM3
• HP/IC sensor lever or PE sensor lever dose
not move smoothly.
• HP/PE/IC sensor is defective.
• CR motor is defective.
• PF motor is defective
• Main board is defective.
• Printer Housing dose not secured with
screw on -the printer mechanism
Table 3-17
Table 3-18
Table 3-19
Communication error on the
STM3
• The main board is defective
• The power supply board is defective.
• The parallel cable dose not support the bidirectional transportation.
• The suitable print driver is not installed into
the PC.
Figure 3-20
Any error indication is not
displayed. But, the paper is
not ejected completely.
Paper jam dose not occur.
• Paper eject roller gear is disengaged from
the pump’s gears.
• The Paper eject frame is not assembled in
the Paper eject frame.
Figure 3-21
Dot missing occur and it is
not recovered with CL
• Pump unit dose not absorb the ink from the
printhead.
• Cap unit dose not stick on the surface of the
printhead completely.
• The printhead is broken
• The head FFC has any damage.
• The main board is defective.
Figure 3-22
Figure 3-23
Figure 3-24
• The accuracy of the CR motor is lowered.
• The lack of the lubricant around the CR
unit.
• The both I/C is not held in the CR unit
securely.
• The Paper eject frame is deformed.
• Any foreign material is sticking around the
printhead.
• Paper feed accuracy is lowered.
• Printer driver setting is not suitable.
• Paper path has ink stain somewhere.
Table 3-25
Table 3-26
Table 3-27
Table 3-8. Symptoms and possible cause
Symptom
Possible Cause
Paper out error indication on
STM3 (Paper is not loaded
correctly)
• The friction of the LD roller is lowered due
to the paper dust.
• The clutch mechanism is broken.
• Tension spring 0.143 come off in the clutch
mechanism.
• Compression spring 0.98 comes off.
• Tip of Change lever has any damage.
• PF motor is broken
Check table
Table 3-9
Table 3-10
Table 3-11
Paper jam error indication
on STM3
• Star wheel assembly is not assembled on
the Paper eject frame.
• The Spur gear 15 is not assembled
correctly
• The paper guide front is not assembled
correctly or has any damage.
• The PE detection lever dose not move
smoothly
Table 3-12
Table 3-13
Table 3-14
Multiple papers are always
loaded.
• The paper return plate dose not work
correctly.
Table 3-15
Paper is always loaded
without any print job
• The Change lever is broken in the Clutch
mechanism.
Table 3-16
Troubleshooting
Print quality is not good
• Vertical banding
• Horizontal banding
• Printing is blurred
• Ink stains the paper
Unit Level Troubleshooting
Check table
56
EPSON Stylus COLOR 480
Revision B
If the problem fits to the detail phenomenon in the table, make sure the check point and
repair the product following the corresponding remedy mentioned in the table when
you find the defective parts in the check point.
Table 3-10. Paper out error indication on STM3
Paper out error indication on STM3
Step
No.
Detail phenomenon
Table 3-9. Paper out error indication on STM3
ASF LD roller dose not
attempt to load the
paper. But, the PF
motor and the Spur
gear 35.2 is rotating.
Paper out error indication on STM3
Step
No.
Detail phenomenon
Check point
• Check the surface of
the LD roller if the
micro pearl or severe
smear is adhered.
1
ASF LD roller attempt
to load the paper.
But, paper is not
loaded at all. The LD
roller seems slipping.
LD roller
If it is no problem,
proceed the next step
Remedy
• Set a cleaning sheet in
the ASF up side down.
Then holding the top
edge, try to load the
paper from the Printer
driver. The micro pearl
on the LD roller surface
is removed. To remove
severe smear, staple a
cloth moistened with
alcohol to a post card
and clean the roller in the
same manner.
N o n - a d h e s iv e A r e a
2
T h is s id e d o w n
S ta p le r s
• Replace the clutch
mechanism with new
one.
Spur gear 35.2
3
ASF LD roller dose not
attempt to load the
paper. But, the PF
motor and the Spur
gear 35.2 is rotating.
• If the problem is not
solved, replace the LD
roller with new one.
Troubleshooting
Clutch tooth
1. Check if the tension
spring 0.143 comes off
in the Clutch
mechanism.
(U s e a p o s t c a rd
fo r th e b a s e s h e e t.)
C lo th m o is te n e d
w ith a lc o h o l
• Check if the clutch
tooth is broken.
Remedy
If it is no problem,
proceed the next step.
C L S h e e t
A d h e s iv e A r e a
Check point
Unit Level Troubleshooting
1. Se the tension spring
0.143 in the clutch
mechanism.
Tension spring
0.143
2. Set the Compression
spring 0.98 in the
Change lever.
57
EPSON Stylus COLOR 480
Revision B
Table 3-12. Paper jam error indication on STM3
Table 3-11. Paper out error indication on STM3
Paper Jam error indication on STM3
Paper out error indication on STM3
Step
No.
Detail phenomenon
Check point
1. Check if the tip of the
Change lever has any
damage.
Remedy
Step
No.
Detail phenomenon
1. Replace the Change
lever with new one.
Check point
Remedy
• Check if the star wheel
assembly is assembled
in the Paper eject
frame.
• Remove the jammed
paper and assemble the
Star wheel assembly in
the Paper eject frame
completely.
If the hook portion of the
Star wheel assembly is
broken, replace the Star
wheel assembly with
new one.
Change lever
4
When the print data is
sent to the printer, ASF
LD roller continue to
load the paper even if
the first paper is loaded
to the PF roller and the
paper is ejected while
the ASF hopper is
flapping.
1
Paper is not ejected
completely and
jammed around the
Paper eject frame.
comp. spring 0.98
2. Check if the
Compression spring
0.98 comes off from
the Change lever
2. Set the Compression
spring 0.98 in the
Change lever.
If it is no problem,
proceed the next step
• Check if the Paper
eject roller is rotating
correctly.
If it is no problem,
proceed the next step.
5
When the printer is
turned on, ASF hopper
dose not operate at all
in the power on
sequence
Troubleshooting
Star wheel assy
1. Check if the PF motor
connector is connected
to the CN3.
2. Check if the PF motor
coil resistance is about
7ohm by using tester
Refer to Table 3-1.
• Set the tip of the Spur
gear 15 to the protrusion
of the Pump unit and
assemble it correctly.
Paper eject roller
1. Connect the PF motor
connector to the CN3 on
the Main board.
2. Replace the PF motor
with new one.
2
Ditto
Spur gear 15
3. If the problem is not
solved, replace the Main
board with new one.
Unit Level Troubleshooting
If it is no problem,
proceed the next step
58
EPSON Stylus COLOR 480
Step
No.
3
Revision B
Table 3-13. Paper jam error indication on STM3
Table 3-14. Paper jam error indication on STM3
Paper Jam error indication on STM3
Paper Jam error indication on STM3
Detail phenomenon
The paper is jammed
around the Front paper
guide.
Check point
Remedy
1. Check if the Front
paper guide is floating
from the assemble
position.
2. Check if there is any
damage around the
rear edge of the each
rib on the Front paper
guide.
1. Assemble the Front
paper guide front to the
suitable portion and
confirm the PF grounding
spring is securing the
Front paper guide.
Step
No.
5
PF grounding spring
Detail phenomenon
Check point
Remedy
1. Check if the CN1
1. Connect the CN1
When the paper is
connector cable for HP/
connector cable to the
loaded from the ASF
PE/IC sensor cable is
CN1 on the Main board.
and ejected without
disconnected
on
the
any printing. After
Main board or sensor.
eject the paper,
2.
Check if the HP/PE/IC 2. Replace the HP/PE/IC
paper eject sequence
sensor with new one.
sensor operates
is continued.
If any print job is
sent to the printer,
General error is
displayed on the
STM.
correctly by using the
tester. Refer to Table
3-2.
3. If the problem is not
solved, replace the Main
board with new one.
Front Paper guide
Front paper guide
2. Replace the Front paper
guide with new one.
If it is no problem,
proceed the next step
• Check if the Torsion
spring 0.22 comes off
on the both PE sensor
lever.
• If the Torsion spring
0.22 is not set on the
correct position, set it
correctly. If any paper
Tension spring
dust is placed around the
0.22
PE sensor lever, remove
it
4
Paper is loaded
correctly from ASF.
But, after complete the
print job, paper jam
indicated on the screen
without any paper jam.
If you send the new
print job in this
condition, the General
PE sensor lever
error is indicated on
the screen.,
Troubleshooting
• If it is no problem,
proceed the next step
Unit Level Troubleshooting
59
EPSON Stylus COLOR 480
Revision B
Table 3-15. Multiple papers are always loaded
.
Table 3-16. Paper is always loaded without any print job
Multiple papers are always loaded.
Step
No.
1
Detail phenomenon
Any error indication is
not displayed on the
monitor. But, multiple
papers are always
loaded from ASF.
Check point
Check if the Paper return
plate is operating
correctly in the ASF
when the paper is loaded.
Paper is always loaded without any print job
Remedy
Step
No.
• Assemble the torsion
spring 28.9 in the ASF
frame.
Detail phenomenon
Check point
Paper is always loaded
from ASF without any
print job.
1. Check if the tip of the
Change lever has any
damage.
ASF hopper
continue to flapping
when the printer is
turned on.
Remedy
1. .Replace the Change
lever with new one.
Change lever
1
Torsion spring 28.9
comp. spring 0.98
2. Check if the
Compression spring
0.98 comes off from
the Change lever
Troubleshooting
Unit Level Troubleshooting
2. Set the Compression
spring 0.98 in the
Change lever.
60
EPSON Stylus COLOR 480
Step
No.
Revision B
Table 3-17. General Error indication on the STM3
Table 3-18. General Error indication on the STM3
General Error indication on the STM3
General Error indication on the STM3
Detail phenomenon
Check point
1. Check if the Torsion
spring 0.22 comes off
on the both HP/IC
sensor lever.
Remedy
Step
No.
1. Set the Torsion spring
0.22 on the HP/IC sensor
lever.
HP/IC sensor lever
2
Detail phenomenon
Check point
1. Check if the CR
motor connector is
connected CN2 on the
Main board.
When the printer is
2. Check if the coil
turned on, the CR unit
resistance of the CR
dose not move at all in
motor is about 7.8ohm
the power on sequence.
by using the tester.
Refer to Table 3-1.
1
When the printer is
turned on, the printer
continue the paper
eject sequence even if
the paper is not in the
paper path.
1. Connect the CR motor
connector to the CN2 on
the Main board.
2. Replace the CR motor
with new one.
3. If the problem is not
solved, replace the Main
board with new one.
Torsion spring
0.22
2. Check if the Torsion
spring 0.22 comes off
on the both PE sensor
lever.
Remedy
2. Set the Torsion spring
0.22 on the PE sensor
lever.
3
Tension spring
0.22
When the printer is
turned on, PF roller
dose not rotate at all in
the power on sequence.
1. Check if the PF motor
connector is connected
to the CN3.
2. Check if the PF motor
coil resistance is about
7ohm by using tester
1. Connect the PF motor
connector to the CN3 on
the Main board.
2. Replace the PF motor
with new one.
3. If the problem is not
solved, replace the Main
board with new one.
PE sensor lever
3. Check if the CN1
connector cable is
connected on the CN1
on the Main board or
sensor.
4. Check if the HP/PE
sensor work correctly
by using the tester.
Refer to Table 3-2
Troubleshooting
3. Connect the CN1
connector cable to the
CN1 on the Main board.
4. Replace the HP/PE/IC
sensor with new one.
5. If the problem is not
solved, replace the Main
board with new one.
Unit Level Troubleshooting
61
EPSON Stylus COLOR 480
Step
No.
Revision B
Table 3-19. General Error indication on the STM3
Table 3-20. Communication error on the STM3
General Error indication on the STM3
Communication Error on the STM3
Detail phenomenon
Check point
Remedy
1. Check if the Top
housing is secured with
the fixing screw at the
front side.
1. Secure the Housing
fixing screw at the printer
front side.
Step
No.
1
Top housing
2. Check if the Change
lever is placed to the
printer front side.
4
When the printer is
turned on, it sounds
strange noise and the
CR unit is stopped
around the CR lock
lever.
Change lever
Troubleshooting
When the printer is
turned on, printer dose
not operate at all.
2. Turn back the Change
lever to the printer back
side with the tweezer or
small screw driver.
2
3. Check if the PF motor
is operated. Check the
CN3 connector and the
coil resistance for PF
motor.
4. If the CR lock lever is
not released even if the
PF motor rotate in the
power on sequence,
check if one of the
gears has any damage
in the PF motor torque
transportation path.
Refer to Figure 2-14.
Detail phenomenon
3. Connect the PF motor
cable to CN3 on the
Main board.
Replace the PF motor
with new one.
When the printer is
turned on, power on
sequence is operated
correctly. But, when
any print job is sent to
printer,
communication error is
indicated on the
monitor.
4. Change the damaged
gear with new one.
Check point
1. Check if neither CR
motor nor PF motor
work at all when the
printer is turned on.
Remedy
1. Replace the PS board
with new one.
2. If the problem is not
solved, replace the main
board with new one.
1. Check if the Parallel
I/F cable supports the
bi-directional
transportation.
2. Check if the PC
support bi-directional
communication.
3. Check if SC480
printer driver is used
for the print job.
4. Check if the incorrect
model name is stored
in the 02<H> address
of the EEPROM in the
Main board.
5. Check if scan monitor
is installed in the PC
and it is active.
1. Replace the Parallel I/C
cable with the suitable
one.
2. Change the setting of
Bi-d communication in
the BIOS of the PC.
3. Install the SC480 printer
driver in the PC.
4. Write down 01<H> data
into the 02<H> address
of the EEPOM by using
the Dump.exe program.
5. Close the scan monitor
in the Windows task bar
or overwrite the latest
ESCPCSCAN.DLL.
6. If the problem is not
solved, replace the main
board with new one.
5. If the problem is not
solved, replace the Main
board with new one.
Unit Level Troubleshooting
62
EPSON Stylus COLOR 480
Revision B
Table 3-21. Paper is not ejected completely without any error indication
Table 3-22. Dot missing occur and it is not recovered with CL
Paper is not ejected completely without any error indication
Dot missing occur and it is not recovered with CL
Step
No.
Detail phenomenon
Check point
Remedy
1. Check if the Paper
eject roller rotate when
the paper is ejected.
1. Assemble the Spur gear
15 to the protrusion on the
pump unit.
Step
No.
Detail phenomenon
Spur gear 15
1
Printing is normal.
But, the paper is not
ejected completely and
the bottom area stay
around the Paper eject
frame.
2. Check if the Paper
eject frame is secured
with the three fixing
screws to the Main
frame.
Paper eject frame
2. Secure the Paper eject
frame witt the two fixing
screws to the Main
frame.
1
In the CL sequence,
the pump unit seems
work correctly. But,
ink is not ejected to the
waste ink pad at all.
Moreover, any ink is
not absorbed from the
head to the cap.
Check point
Remedy
1. Check if ink is ejected
to the waste ink pad via
pump unit in the CL
sequence.
2. Check if there is any
foreign material
around the seal rubber
parts on the cap
assembly.
1. If ink is not ejected at all
to the waste ink pad in the
.
CL sequence, proceed the
following check point 2).
2. Remove the foreign
material around the seal
rubber parts.
Cap seal rubber
parts
3. Check if any damage
is observed around the
seal rubber parts on
the cap assembly.
3. Replace the Cap
assembly with new one.
4. Check if the two
compression spring
are assembled in the
Cap assembly
correctly.
4. Set the Compression
spring into the Cap
assembly.
Compression
spring
Troubleshooting
Unit Level Troubleshooting
63
EPSON Stylus COLOR 480
Table 3-23. Dot missing occur and it is not recovered with CL
Table 3-24. Dot missing occur and it is not recovered with CL
Dot missing and it is not recovered with CL
Dot missing occur and it is not recovered with CL
Step
No.
1
Revision B
Detail phenomenon
In the CL sequence,
the pump unit seems
work correctly. But,
any ink is not ejected
to waste ink pad.
Moreover, any ink is
not absorbed from the
head to the cap.
Check point
Remedy
5) Check if the Pump
tube is connected to
the bottom of the Cap
assembly correctly
5) Connect the Pump tube
to the bottom of the Cap
assembly deeply.
Step
No.
Detail phenomenon
Check point
2
In the CL sequence,
ink is ejected to the
Waste ink pad (this
means pump unit &
cap unit are working
correctly). But, the dot
missing is not solved at
the specific nozzles
even if the several CLs
are performed.
1. Check if the segment
in the nozzle check
patter is reduced every
CL & Nozzle check
pattern printing.
2. Check if any damage
is observed on the
Head FFC.
In the CL sequence,
ink is ejected to the
Waste ink pad. But, dot
missing is occurred on
all nozzle in the
printing and is not
solved in the several
CLs.
1. Check if the Head
FFC is connected to the
CN4 on the Main board
or Head FFC.
Pump tube
connection point
6) Check if the pump tube
has a little slack
between the Cap
assembly and the pump
unit when the Cap
assembly is slide up
completely.
Cap assy.
6) Pump unit may coil the
pump tube inside the unit.
In this case, pull out the
coiled tube from the
pump unit carefully.
After that, connect the
pump tube to the Cap
assembly after placing
the tube correctly.
3
Remedy
1. Replace the I/C with
new one in the I/C
replacement sequence.
2. Replace the Head FFC
with the new one.
3. Replace the printhead
with new one.
1. Connect the Head FFC
securely to the CN4 on
the Main board or
Printhead.
2. Replace the Printhead
with new one.
3. Replace the Main board
with new one.
Tube
Pump unit
7) If the problem is not
solved, replace the Pump
unit with new one.
Troubleshooting
Unit Level Troubleshooting
64
EPSON Stylus COLOR 480
Revision B
.
Step
No.
Table 3-25. Print quality is not good
Table 3-26. Print quality is not good
Print quality is not good
Print quality is not good
Detail phenomenon
Vertical banding is
appeared against the
CR movement
direction. And it looks
like uneven printing.
Check point
Remedy
1. Check if each
segment is printed
correctly in the nozzle
check pattern.
2. Check if the surface of
the CR guide shaft
dose not have any
sever stain.
1. Perform the CL and
check the nozzle check
pattern.
2. Clean the surface of the
CR guide shaft with the
dry soft cloth and
lubricate G-55 inside the
CR guide shaft. Refer to
Figure 6-4.
3. Clean the surface of the
CR sliding portion on the
Paper eject frame and
lubricate specific amount
of the G-26.
Refer to Figure 6-8.
3. Check if the surface of
the CR sliding portion
on the Paper eject
frame has enough oil.
Step
No.
1
Detail phenomenon
CR movement
direction
G26 lubrication
4. Check if the CR guide
shaft is assembled in
the correct portion
securely.
5. Check if the surface of
the CR guide shaft is
flat.
6. Check if the surface
of the Paper eject
frame is flat.
Troubleshooting
4. Reassemble the CR
guide shaft into the
mounting slat on the
both side frame and
secure it with Rod
spring. Figure 4-50 and
Figure 4-51.
5. Replace the CR guide
shaft with new one.
Remedy
7) Check if the rubber
parts are stuck inside the
I/C cover.
7. Stick the rubber parts
inside the I/C cover.
8) Replace the following
parts.
• CR motor
• CR timing belt
• Compression spring 15.7
1. Check if each segment
is printed correctly in
the nozzle check
pattern.
2. Check if the suitable
paper is used
according to the
printer driver setting.
3. Check if the Paper
feed roller is dirty.
4. Check if the following
parts do not have any
damage.
• Combination gear 8.4,
21.6
• Combination gear
9.6,33.6
• Spur gear 35.4.
• Spur gear 15
1. Perform the CL and
check the nozzle check
pattern. by using the
Adjustment program.
2. Use the suitable paper
according to the printer
driver setting.
Ditto
Micro banding appears
horizontally against the
paper feeding direction
and it appears with the
same width.
1
Check point
2
CR movement
direction
3. Clean the surface of the
PR roller carefully with
the soft brush
4. Replace the damaged
parts with new one.
5. Replace the Printhead
with new one.
6. Replace the Paper eject
frame with new one.
Unit Level Troubleshooting
65
EPSON Stylus COLOR 480
Revision B
d
Table 3-27. Print quality is not good
Print quality is not good
Step
No.
3
4
Detail phenomenon
Check point
Remedy
1. Use the suitable paper
according to the driver
setting.
Printing is blurred.
1. Check if the suitable
paper is used according
to the printer driver
setting.
2. Check if the correct
head ID is stored in the
EEPROM by using the
Adjustment program.
1. Clean the ink stained
parts with soft cloth
Ink stains the paper
1. Check if the following
parts are stained with
ink.
• Upper paper driven
roller
• PF roller
• Paper guide front
• Paper eject roller.
2. Check if there is some
ink drops around the
backside of the
printhead.
3. If the bottom area of
the printed paper has
ink stain, check if the
Paper eject frame is
secured with three
screws.
4. If the bottom area of
the printed paper has
ink stain, check if the
Paper eject frame is
bent upward.
Troubleshooting
2. Input 6 digits code of
the head ID into the
EEPROM by using the
Adjustment program.
2. Wipe off the ink drop
with the soft cloth
carefully.
3. Secure the screws fixing
the Paper eject frame.
4. Replace the Paper eject
frame with new one.
Unit Level Troubleshooting
66
CHAPTER
DISASSEMBLY AND ASSEMBLY
EPSON Stylus COLOR 480
Revision B
4.1 Overview
4.1.1 Precautions
This section describes procedures for disassembling the main components of the Stylus
COLOR 480. Unless otherwise specified, disassembly units or components can be
reassembled by reversing the disassembly procedure. Things, if not strictly observed, that
could result in injury or loss of life are described under the heading “Warning”. Precautions
for any disassembly or assembly procedures are described under the heading “CAUTION”.
Chips for disassembling procedures are described under the heading “CHECK POINT”.
If the assembling procedure is different from the reversed procedure of the disassembling,
the procedure is described under the heading “REASSEMBLY”.
Any adjustments required after 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.
See the precautions given under the handling “WARNING” and “CAUTION” in the
following column when disassembling or assembling EPSON Stylus COLOR 480.
W A R N IN G
Read precautions described in the next section before starting.
Disassembly and Assembly
Overview
n Disconnect the power cable before disassembling or assembling
the printer.
n Wear protective goggles to protect your eyes from ink. If ink gets
in your eye, flush the eye with fresh water and see a doctor
immediately.
n If ink comes into contact with your skin, wash it off with soap and
water. If irritation occurs, contact a physician.
n A lithium battery is installed on the main board of this printer. Be
sure to observe the following instructions when serving the
battery:
1. Keep the battery away from any metal or other batteries so that
electrodes of the opposite polarity do not come in contact with each
other.
2. Do not heat the battery or put it near fire.
3. Do not solder on any part of the battery. (Doing so may result in
leakage of electrolyte from the battery, burning or explosion. The
leakage may affect other devices close to the battery.)
4. Do not charge the battery. (An explosion may be generated inside the
battery, and cause burning or explosion.)
5. Do not dismantle the battery. (The gas inside the battery may hurt your
throat. Leakage, burning or explosion may also be resulted.)
6. Do not install the battery in the wrong direction. (This may cause
burning or explosion.)
n 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.
68
EPSON Stylus COLOR 480
Revision B
4.1.2 Tools
C A U T IO N
C A U T IO N
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 Never remove the ink cartridge from the carriage unless this
Use only specified tools to avoid damaging the printer.
Name
Supplier
Parts No.
Phillips Screw Driver (No.1)
EPSON
B743800100
Phillips Screw Driver (No.2)
EPSON
B743800200
Nipper
EPSON
B740500100
Tweezers
EPSON
B741000100
manual specifies to do so.
n When transporting the printer after installing the ink cartridge,
n
n
n
n
n
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;
1. 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.
2. 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.
Disassembly and Assembly
Overview
69
EPSON Stylus COLOR 480
Revision B
4.1.3 Work Completion Check
Table 4-1. Work Completion Check (continued)
Classification
If any service is made to the printer, use the checklist shown below to confirm all works are
completed properly and the printer is ready to be returned to the user.
Table 4-1. Work Completion Check
Classification
Lubrication
Item
Self-test
On-line Test
Printhead
Carriage
Mechanism
Main Unit
Check Point
Status
o
Is the operation normal?
o
o
Is the printing successful?
o
Is ink discharged normally from o
all the nozzles?
o
o
Does it move smoothly?
o
o
Is there any abnormal noise
during its operation?
o
o
Is there any dirt or foreign
objects on the CR Guide Shaft? o
o
Is the CR Motor at the correct
temperature?
o
(Not too heated?)
Paper Feeding
Mechanism
Is paper advanced smoothly?
• No paper jamming?
• No paper skew?
• No multiple feeding?
• No abnormal noise?
Is the PF Motor at correct
temperature?
Is the paper path free of any
obstructions?
Adjustment
Specified
Adjustment
Disassembly and Assembly
Are all the adjustment done
correctly?
Item
Specified
Lubrication
Check Point
Are all the lubrication made at
the specified points?
Is the amount of lubrication
correct?
Checked
Not necessary
Function
ROM Version
Version:
Ink Cartridge
Are the ink cartridges installed
correctly?
Protective
Materials
Have all relevant protective
materials been attached to the
printer?
Attachments,
Accessories
Have all the relevant items been
included in the package?
Checked
Not necessary
Checked
Packing
Not necessary
Checked
Not necessary
Others
Checked
Status
o
o
o
o
o
o
o
o
o
o
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
o Checked
o Not necessary
Not necessary
Checked
Not necessary
Checked
Not necessary
o Checked
o Not necessary
o
o
o
o
o
o
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Overview
70
EPSON Stylus COLOR 480
Revision B
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.
U p p e r H o u s in g
re m o v a l
Page 72
C R
P r in th e a d r e m o v a l
In k S y s te m
Page 81
u n it
re m o v a l
a s te D r a in In k
P a d u n it r e m o v a l
Page 80
Page 76
M a in B o a r d u n it
re m o v a l
Page 87
C a p u n it r e m o v a l
W
C ir c u it b o a r d
re m o v a l
Page 75
Page 73
P F M o to r re m o v a l
M o to r
re m o v a l
Page 76
P S
B o a r d u n it
re m o v a l
Page 82
L D
Page 76
R o lle r r e m o v a l
Page 82
H P /P E / IC
P u m p u n it r e m o v a l
Page 87
R e m o v in g th e
L D R o lle r u n it
R e m o v in g th e
P a p e r E je c t R o lle r
Page 89
C R
u n it r e m o v a l
Page 93
A S F fr a m e u n it
d is a s s e m b lin g
Page 96
R e m o v in g th e
P F R o lle r u n it
Page 91
S e n s o r
re m o v a l
Page 85
Page 87
Figure 4-1. Disassembling Flowchart
Disassembly and Assembly
Disassembly
71
EPSON Stylus COLOR 480
Revision B
4.2.1 Housing removal
1.
Open the printer cover and remove 1 screw (C.B.P-TITE R 3x6 R/Uc screw) at the
printer front side.
n Tightening Torque for screw
• C.B.P-TITE R3x6 R/Uc screw for housing front side: 6 +/- 1kgf.cm
• C.B.S 3x6 F/Zn screw for housing back side
: 6+/- 1kgf.cm
C.B.T-TITE R 3X6 R/Uc screw
Figure 4-2. Removing 1screw for Housing
2.
Remove 1 screw (C.BS. 3x6 F/Zn screw) at the back of the printer and remove the
Housing.
C.B.S 3X6 F/Zn screw
Figure 4-3. Removing 1scew for Housing
Disassembly and Assembly
Disassembly
72
EPSON Stylus COLOR 480
Revision B
6.
4.2.2 Printhead removal
1.
Remove the Housing from the printer. (Section 4.2.1 Housing removal)
2.
Open the Cover cartridge and remove the both black and color ink cartridges.
3.
Release the Printhead FFC from the cable holder in the left side of the CR unit.
4.
Remove one screw (C.B.P.-TITE 3 x 6 F/Zn) tightening the Printhead at the left side of
the CR unit.
Disconnect the Printhead’s FFC from the connector on the Printhead.]
C H E C K
P O IN T
n Place the Printhead’s FFC in the cable holder by the four
portions indicated in the following Figure4-6.
n Make sure that the Head Grounding Plate is installed to the
carriage correctly. Refer to Figure 4-7.
n Make sure that two holes of the Printhead correctly fit in the
installing position pins. Figure 4-7.
C.B.P-TITE 3X6 F/Zn
Head FFC
Figure 4-4. Removing the Printhead’s FFC
5.
Remove the Printhead from the CR unit taking the following step.
Step2
Step1
Figure 4-6. Placing the Printhead’s FFC
Figure 4-5. Removing the one screw tightening the Printhead
Disassembly and Assembly
Disassembly
73
EPSON Stylus COLOR 480
Revision B
Head installing position pins
Head grounding plate
Figure 4-7.
Printhead installing the position pin & the grounding plate.
n Tightening Torque for screw
• C.B.P-TITE 3x8 screw for printhead: 6+/1kgf.cm
A D J U S T M E N T
R E Q U IR E D
When the Printhead is replaced with a new one, following
adjustments must be performed in the order below: Refer to
Page108.
1. Initial ink charge
2. Printhead ID input
3. Bi-d adjustment
When the Printhead is removed and reinstalled, only the following
adjustment is required. Refer to Page106.
1. Head cleaning
2. Bi-d adjustment
Disassembly and Assembly
Disassembly
74
EPSON Stylus COLOR 480
Revision B
7.
4.2.3 CR motor removal
1.
Remove the Housing from the printer. (Section 4.2.1 Housing removal)
2.
Move the CR unit from the CR home position to around the center position.
3.
Push the CR motor from the right to left to slack the CR timing belt.
4.
Take off the CR timing belt from the Pinion gear of the CR motor.
Remove the CR motor from the Printer mechanism taking the following step:
- Slide the CR motor to right side. (Step2)
- Slide the CR motor to backward to take off the fixing part placing the right side of
the CR motor. (Step3)
- Slide the CR motor to the left side to take off the fixing part placing the left side of
the fixing part. (Step 4).
3
4
CR Timing belt
2
Step 1
1
Step 2
Figure 4-10. Removing the CR motor
Figure 4-8. Taking off the CR timing belt.
5.
Remove the Compression spring 15.7 and Holder reinforcement plate between the CR
motor holder and the protrusion on the Main frame with the tweezers.
8.
Take the CR motor’s cable out from the cable hook in the Waste drain ink pad unit.
9.
Disconnect the CR motor connector cable from the CN2 on the Main board with
tweezers.
A D J U S T M E N T
R E Q U IR E D
Compression spring 15.7
n The Gap adjustment (Bi-d adjustment) is required when the CR
motor is removed or replaced. Refer to Page115.
n Connect the CR motor connector cable to the CN2 on the Main
board. Use of tweezers or pincers is recommended to facilitate
the job, since the CN2 is not located near the rear edge of the
Main board.
n Make sure to set the Holder reinforcement plate with the
Compression spring 15.7. Refer to Figure4-9.
Holder Reinforcement Plate
Figure 4-9. Remove the Compression spring 15.7Compression spring 15.7
6.
Slide the CR motor holder along with the CR motor to the left side
Disassembly and Assembly
Disassembly
75
EPSON Stylus COLOR 480
Revision B
4.
4.2.4 Circuit board removal
1.
Remove the Housing from the printer. (Section 4.2.1 Housing removal)
2.
Remove two screws (CB.S. 3x6, F/Zn) securing the Front Housing (Stacker guide) and
remove the Front Housing (Stacker Guide).
Front Housing
(Stacker Guide)
Remove four screws (C.B.S.3x6, F/Zn) securing the Circuit board unit at the back side
of the Printer mechanism and remove two screws (C.B.S. 3x6, F/Zn) securing the
Circuit board unit at the right side (viewed from back side).
C.B.S. 3X6 F/zn
C.B.S 3x6 F/Zn
Figure 4-13. Removing six screws at the printer back side & right side
5.
Figure 4-11. Removing the Front Housing (Stacker Guide)
3.
Holding the Left housing lightly, pull down the Circuit board unit. Then disconnect the
following four cables from the corresponding connectors on the Main board.
n CR motor connector cable : CN2
Remove two screws (C.B.S. 3x6, F/Zn) securing the Circuit board unit at the front side
of the Printer mechanism.
n PF motor connector cable : CN3
6.
n Printhead FFC
: CN4
n HP/PE/IC sensor cable
: CN1
Remove the following screws securing each circuit board to the Shield plate. Figure
Figure 4-14.
n C364 MAIN/B
: Remove five screws.
C.B.S. 3x6, F/Zn (Red circled screws)
C.P. 3x6, F/Zn (Yellow circled screws)
: 3pcs (for Main board)
: 2pcs (for Parallel I/F) connector)
n C364PSB/E
: Remove five screws.
C.B.S, 3x6, F/Zn (Yellow circled screws)
: 3pcs (for PS board)
C.B.S-TITE R, 3x6, F/UC (Red circled screw)
: 1pcs (for PS board)
C.B.(O),4x5, F/ZG for 120V (Green circled screw):1pcs (for Earth terminal)
Hexagon nut, Normal M4(Green circled)
:1pcs (for Earth terminal)
(C.B.S Screw 3x6, F/Zn for 220V (Green circled screw): 1pcs (for Earth
terminal))
C.B.S. 3x6 F/Zn
Figure 4-12. Removing two screws at the printer front side
Disassembly and Assembly
Disassembly
76
EPSON Stylus COLOR 480
Revision B
NOTE: 110V type of the PS board dose not have earth wire.
n Since the cable between C364 MAIN board and C364 PSB/E
Refer to the Figure 4-14
C364 MAIN Board
board are directly soldered, take the following steps when
replacing only one circuit board in the service activity.
1. Take off the cable on the Main board by removing the solder by
heating it with the soldering iron.
2. Replace the defective circuit board with new one.
3. Insert the tip of the cable into the soldering hole of the ASP Main
board and solder it securely.
n Tightening Torque for screw
C364 PSE/PSE board
•
•
•
•
•
•
C.B.S. 3x6 F/Zn screw for PS board
C.B.S TITE R 3x6,F/Uc screw for PS board
C.B.S. 3x6 F/Zn screw for Main board
C.P. 3x6,F.Zn screw for Parallel I/F connector
C.B.S. 3x6 F/Zn screw for Circuit unit
C.B.(O) 4x5, F/ZG screw for Earth cable
: 6+/- 1kgf.cm
: 6+/- 1kgf.cm
: 6+/- 1kgf.cm
: 6+/- 1kgf.cm
: 6+/- 1kgf.cm
: 11+/-1kgf.cm
Figure 4-14. Remove the screw securing each circuit board.
A D J U S T M E N T
R E Q U IR E D
When replacing the Main board with a new one, perform the
following service items.
n Before removing the Main board, connect the parallel I/F
Cable and try to read out the following data by using the
Adjustment program. If this operation succeeds, replace the
Main board and write the read out data to the new Main board
through the Adjustment program. Refer to Page111.
1) I/C Ink consumption counter.
2) Waste ink drain pad counter.
3) Printhead ID input.
4) Gap adjustment (Bi-d adjustment)
In case the above mentioned data are not able to be read out from
the defective Main board, perform the following service items.
n Replace the both ink cartridges with a brand new one.
n Replace the Waste ink drain pad with a new one.
n Input the Printhead ID.
n Adjust the Bi-d alignment.
Disassembly and Assembly
Disassembly
77
EPSON Stylus COLOR 480
C H E C K
P O IN T
Revision B
When replacing or removing the PS board, be sure to use the
following suitable screw to secure the PS board.
C.B.S-TITE R, 3x6, F/UC
Figure 4-15. PS board fixing screws.
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.
n Installation of I/C must be carried out by I/C replacement
sequence. Otherwise, ink may not eject properly.
Refer to the Page101.
Disassembly and Assembly
Disassembly
78
EPSON Stylus COLOR 480
C H E C K
P O IN T
Revision B
n Check the Earth terminal and wire position. Refer to the
following figure. The earth wire for 120V must be placed back
side of the Heat sinker HT1. And the earth wire for 220V must be
placed in front of the Heat sinker HT1 as following figure.
Earth terminal
120v Type
Heat sinker
Earth terminal
220V Type
Heat sinker
Figure 4-16. Earth terminal and wire position
Disassembly and Assembly
Disassembly
79
EPSON Stylus COLOR 480
Revision B
.
4.2.5 Waste drain ink pad unit removal
1.
Remove the Housing from the printer. (Section 4.2.1 Housing removal)
2.
Remove one screw (C.B.P TITE 3x8 F/Zn screw) on the front right side of the printer.
(viewed from front side)
C H E C K
P O IN T
n After assembling the Waste drain ink pad unit, be sure to set the
following three cables in the cable hook in the Waste drain ink
pad unit. Refer to the Figure 4-18.
n When assembling the Waste drain ink pad unit, be sure to set the
tip of the waste ink tube in the suitable position of the Waste
drain ink pad. Refer to the Figure 4-19
Waste drain ink pad
C.B.T TITE 3x8 F/Zn screw
Figure 4-17. Removing one screw securing the Waste ink pad unit
Pump unit
3.
Ink tube
Remove one screw (C.B.P. TITE 3x8 F/Zn screw) and take three cables off from the
cable hook in the Waste drain ink pad unit as shown in the following figure.
Figure 4-19. Drain ink tube setting position
A D J U S T M E N T
R E Q U IR E D
Peel off the adhesive tape
C.B.S. TITE 3X8 F/Zn screw
When the Waste drain ink pad is replaced with a new one,
following service item is required.
n Waste drain ink counter reset operation. Refer to Page116.
n Tightening torque for screw
• C.B.P. TITE 3x8 screw for Waste drain ink pad unit
: 9+/1 kgf.cm
Cable holder
Figure 4-18. Removing one screws & cables at the back side of the printer
4.
Remove the Waste drain ink pad unit from the printer
Disassembly and Assembly
Disassembly
80
EPSON Stylus COLOR 480
Revision B
4.2.6 PF motor removal
n Since the CN 3 is not located near the rear edge of the Main
1.
Remove the Housing from the printer. (Section 4.2.1 Housing removal)
2.
Remove the Waste drain ink pad unit from the printer. (Section 4.2.5 Waste drain ink
pad unit removal)
3.
Remove two screws (C.B.S. 3x6,F/Zn screw) securing the PF motor to the Ink system
frame.
board, it is easier to use the tweezers or pincers to connect the
cable to the CN3.
n Tightening torque for screw
• C.B.S. 3x6 F/Zn screw for PF motor
: 9+/1 kgf.cm
C.B.S 3x6 F/Zn screws
CR motor
Figure 4-20. Removing two screws securing the PF motor
4.
Disconnect the connector cable for PF motor from CN3 on the Main board and take the
cable off from the hook on the Waste drain ink pad.
5.
Remove the PF motor from the right frame.
C H E C K
P O IN T
Be sure that the PF motor cable is placed to the backward. Refer to
the Figure 4-20.
Disassembly and Assembly
Disassembly
81
EPSON Stylus COLOR 480
Revision B
4.2.7 LD Roller removal
4.
Push the two hooks of the LD roller shaft holder as shown in the following figure.
1.
Remove the Housing from the printer. (Section 4.2.1 Housing removal)
5.
Pull the LD roller shaft holder unit upward from the Main frame.
2.
Take the Head FFC off from the Head FFC holder located along the LD roller shaft
holder.
Head FFC holder
Two hooks for LD roller holder
Figure 4-23. Pushing two hooks of the LD roller shaft holder
LD roller shaft holder
6.
Remove the LD roller along with the Clutch mechanism from the LD roller shaft
holder unit.
Figure 4-21. Taking Head FFC out from the FFC holder
3.
LD Roller shaft holder unit
Remove two screws (C.B.S. 3x6, F/Zn screw) securing the LD roller holder to the
Main frame.
C.B.S 3X6 F/Zn screws
Clutch mechanism
LD Roller
Figure 4-24. Removing the LD roller with Clutch mechanism.
Figure 4-22. Removing two screws securing the LD roller holder
Disassembly and Assembly
Disassembly
82
EPSON Stylus COLOR 480
C A U T IO N
Revision B
n Do not damage the tooth of the Spur gear 35.2 and the
n Before assembling the LD roller shaft, make sure that the round
Combination gear 11.2, 35.2 when assembling the LD roller shaft
holder unit.
hole of the Clutch is set on the protrusion on the LD roller shaft
as shown in the following figure.
round hole on the Clutch
Spur gear 35.2
Protrusion on the LD roller shaft
Combination gear 11.2, 35.2
Figure 4-26. Assembling the Clutch
Figure 4-25.
Combination Gear 11.2, 35.2 and Spur Gear 35.2
n Assemble the LD roller shaft holder unit to the printer
mechanism in the following procedure.
1) Set the tip of the Change lever to the printer front side.
Change lever
Figure 4-27. LD Roller shaft holder assembling
procedure (1)
Disassembly and Assembly
Disassembly
83
EPSON Stylus COLOR 480
Revision B
2) Assemble the LD roller shaft holder unit while storing the
Paper return plate into the ASF frame.
Paper return plate
Figure 4-28. LD Roller shaft holder assembling
procedure (2)
n Fasten the LD roller shaft holder with two C.B.S 3x6 F/Zn
screws in the order indicated in the following figure.
1
2
Figure 4-29. Fastening the LD roller shaft holder
n Tightening torque for screw
n C.B.S. 3x6 F/Zn screw for LD roller shaft holder unit : 9+/1 kgf.cm
Disassembly and Assembly
Disassembly
84
EPSON Stylus COLOR 480
Revision B
4.2.8 HP/PE/IC Sensor removal
1.
Remove the Housing from the printer. (Section 4.2.1 Housing removal)
2.
Remove the LD roller from the LD roller shaft holder. (Section 4.2.7 LD Roller
removal)
3.
Remove HP/IC detection lever from the LD roller shaft holder and disconnect the cable
from the sensor connector.
C H E C K
P O IN T
n Make sure that the Torsion spring 0.22 is hung to the following
suitable position.
Torsion spring 0.22
Tor
PE sensor lever
HP/IC detection lever
HP/PE/IC sensor
Figure 4-32. Torsion spring 0.22 for PE sensor lever
HP/IC sensor lever
Figure 4-30. Removing the HP/IC detection lever
4.
Release the two fixing hooks for the sensor from the LD roller shaft holder and remove
the sensor.
Two fixing hooks
Torsion spring 0.22
Figure 4-33. Torsion spring 0.22 for HP/IC sensor lever
Figure 4-31. Releasing two fixing hooks for the sensor
Disassembly and Assembly
Disassembly
85
EPSON Stylus COLOR 480
C H E C K
P O IN T
Revision B
n Make sure that the HP/PE/IC sensor cable is placed to the
suitable groove on the LD roller shaft holder.
HP/PE/IC sensor cable
HP/PE/IC sensor
Figure 4-34. Sensor cable placing position (1)
HP/PE/IC sensor cable
Figure 4-35. Sensor cable placing position (2)
n Make sure that the each sensor lever turn back smoothly by
moving it after the sensor was assembled to the LD roller shaft
holder.
Disassembly and Assembly
Disassembly
86
EPSON Stylus COLOR 480
Revision B
4.2.9 Ink system unit removal (Cap & Pump unit )
1.
Remove the Housing from the printer. (Section 4.2.1 Housing removal)
2.
Remove the Waste drain ink pad from the printer. (Section 4.2.5 Waste drain ink pad
unit removal)
3.
Remove three screws (C.B.S. 3x6, F/Zn screw: 2pcs, C.B.S. TITE 3x6, R, F/Uc screw:
1pcs) securing the Ink system frame and the Cap assembly to the frame.
C A U T IO N
C.B.S TITE 3X6, R,F/Uc screw
C.B.S. 3X6 F/Zn screws
n Since the compression spring is included in the Pump assembly,
watch out for the spring and the gear that pop out from the unit
when the Pump assembly is removed from the Ink system unit.
n When replacing the cleaner head built in the Pump assembly, be
careful of the following points.
1) Do not touch the cleaner head with your bare hands. Ware
gloves or use tweezers.
2) Do not smear the head cleaner with oil or grease.
n When installing the Cleaner head, set the rubber side (black side)
facing toward the right side of the frame.
n When installing the Cleaner head, set the two square cut offs on
the Cleaner head into the two hooks on the Ink system.
Cleaner head
Figure 4-36. Removing three screws securing the Ink system
4.
hook & cut off
Remove the Ink system unit (Cap & Pump unit) carefully along with the PF motor &
Ink system frame.
C A U T IO N
When the Ink system unit is removed, be careful that the gears do
not come off from each shaft on the Ink system frame.
5.
Release one hook for Cap assembly on the Ink system frame and take the Cap
assembly out from the Ink system frame.
6.
Disconnect the waste drain ink tube carefully from the bottom of the Cap assembly.
Disassembly and Assembly
Disassembly
n When replacing the Cap Assembly, do not touch the sealing
rubber portion of the Cap Assembly.
n The component parts in the Pump Assembly are not individually
supplied as ASP. So please replace the whole Pump Assembly
when replacing the Pump Assembly.
n Be careful not to crush or leave any stress on the ink tube
connecting the pump assembly and the cap assembly.
87
EPSON Stylus COLOR 480
C H E C K
P O IN T
Revision B
n Make sure that all gears are set in each gear shaft on the Ink
n Tightening torque for screw
system frame. The Combination gear 9.6, 33.6 must be set first on
the Ink system frame.
Combination gear 9.6, 33.6
• C.B.S. 3x6 F/Zn screw for Ink system frame & Cap assy.: 9+/1 kgf.cm
• C.B.S. TITE 3x6 F/Uc screw for Ink system frame
: 9+/-1 kgf.cm
Spur gear 34.2
Combination gear
12.6, 18.4
Combination gear
8.4,21.6
Spur gear 15.2
Figure 4-37. Gear engagement on the Ink system frame
n Make sure that the ink tube is placed along the following
position.
Cap assembly
Pump unit
Ink tube
Figure 4-38. Ink tube placing position
n After installing the Pump Assembly, ensure that the cleaner
parts move back and forth by rotating the Gear.
Disassembly and Assembly
Disassembly
88
EPSON Stylus COLOR 480
Revision B
4.
4.2.10 Paper Eject Roller removal
1.
Remove the Housing from the printer. (Section 4.2.1 Housing removal)
2.
Remove three screws (C.B.S. 3x6, F/Zn screw,:2pcs, C.B.S, 3x5,F/CU screw) securing
the Front frame to the Main frame.
Slide the Paper eject roller carefully to the left side and remove the Paper eject roller to
the forward.
Paper eject roller
C.B.S. 3X5, F/CU screw
Step1
Step2
Figure 4-40. Slide the Paper eject roller
C.B.S 3X6, F/Zn screw
C A U T IO N
Figure 4-39. Removing the Front frame
3.
Lift up the right side of the Front frame and slide it to the left side a little bit and then
remove it.
C A U T IO N
When removing the Front frame, if the CR unit is out of the CR
home position, the nozzle surface of the Printhead may come in
contact with Paper guide front as soon as the Front frame is
removed. This is because the CR unit is held with this frame.
Therefore, be sure to set the CR unit in the CR home position
before removing the Front frame. Otherwise, the dot missing
problem may occur.
Do not damage the tooth of the Spur Gear 15, EJ, with the round
hole on the Main frame.
Paper eject roller
Spur Gear 15, EJ
.
Figure 4-41. Spur Gear 15, EJ
Disassembly and Assembly
Disassembly
89
EPSON Stylus COLOR 480
A D J U S T M E N T
R E Q U IR E D
Revision B
n When you replace the Frame front, make sure to lubricate the
specific amount of G26 to the Frame front. Refer to the Chapter
6 Figure6-8.
n When you replace the Paper eject roller with new one, make sure
to lubricate the specific amount of G26 to the Spur gear 15, EJ.
Refer to the Chapter 6 Figure6-10.
n Assemble the Paper eject roller in the following procedure.
1.
2.
Set the Spur Gear 15, EJ to the cut out hole in the Main frame.
Set the narrow portions of the shaft in the Paper eject roller to the
shaft guide holders on the Front paper guide.
3. Slide the Paper eject roller to the right side carefully and engage the
gear with the Combination gear 12.6, 18.4 and the Spur gear 34.2.
n When you assemble the Front frame to the Printer mechanism,
set the CR unit to the left side and assemble the Front frame
from the right side. Be careful not damage the CR lock lever.
n Fasten the Front frame with C.B.S. Screw 3x6, F/Zn in the order
of 1,2,3.
2
3
1
n Tightening torque for screw
• C.B.S. 3x6 F/Zn screw for Front frame
• C.B.S. 3x5 F/Uc screw for Front frame
Disassembly and Assembly
: 9+/-1 kgf.cm
: 9+/-1 kgf.cm
Disassembly
90
EPSON Stylus COLOR 480
Revision B
6.
4.2.11 Paper feed roller removal
1.
Remove the Housing from the printer. (Section 4.2.1 Housing removal)
2.
Remove the Paper Eject roller. (Section 4.2.10 Paper Eject Roller removal)
3.
Release the PF grounding spring from the Main frame.
Lift up the left edge of the Front paper guide while slanting the Front paper guide by
pulling up its front edge, and then slide the Front paper guide to the left side after
releasing the right hook on the Front paper guide.
Step1
Step1
Paper guide front
PF grounding spring
Step2
Figure 4-44. Remove the Front paper guide.
Figure 4-42. Releasing the PF grounding spring
4.
Set the CR unit to the home position.
5.
Release one hook located on the left edge of the Front paper guide.
7.
Fit the protrusions of the Left PF roller bushing to the notches in the frames as shown
in the following figure and remove the PF roller fasten spacer with tweezer.
Left PF roller bushing
1
2
PF roller fasten spacer
hook
Figure 4-43. Release two hooks of the Front paper guide
Disassembly and Assembly
Figure 4-45.
Fit the protrusions of the Left PF roller bushing to each notches
Front paper guide
8.
Disassembly
Slide the Left PF roller bushing to right side as above figure Step 2.
91
EPSON Stylus COLOR 480
9.
Revision B
Fit the protrusions of the Right PF roller bushing to the notches in the frames as shown
in the following figure
C H E C K
P O IN T
Right PF roller bushing
n After assemble the PF roller, make sure that the dowel of the
both left and right PF roller bushing holder fit in the cut hole of
both frames.
n After assemble the Front paper guide to the printer mechanism,
make sure that the hooks and the dowel pins on the Front paper
guide is set to the fitting positions secure. Slide the Front paper
guide to the right side by pushing it and make sure that the right
hook on the Front paper guide is locked to the frame securely.
If the Front paper guide is not fixed securely to the suitable
position, it may cause the paper jam problem.
Right hook
Figure 4-46. Fit the protrusions of the Left PF roller bushing to each
notches
10. Slide the PF roller to the left side along with the both PF roller bushings and remove
the PF roller from the printer mechanism.
Two dowel pins
Figure 4-47. Front paper guide assembling notice
A D J U S T M E N T
R E Q U IR E D
n When you replace the PF roller with new one, be sure to
lubricate a specific amount of G-26 between the Left PF roller
bushing holder and the left edge of the PF roller. Refer to
Chapter 6 Figure6-5.
n When you assemble the Paper guide front to the Printer
mechanism, set the CR unit to the home position and assemble
the Paper guide front.
n When you assemble the Front frame to the Printer mechanism,
set the CR unit to the left side and assemble the Front frame
from the right side. Be careful not damage the CR lock lever.
Disassembly and Assembly
Disassembly
92
EPSON Stylus COLOR 480
Revision B
4.2.12 CR unit removal
4.
1.
Remove the Housing from the printer. (Section 4.2.1 Housing removal)
2.
Take the CR timing belt off the CR pinion gear by pushing the CR motor to the left.
Release two CR guide shaft rod springs from the both hooks on the left and right sides
of the Main frame.
Left CR guide shaft rod spring
CR timing belt
Figure 4-50. Release Left Rod spring for CR shaft
Figure 4-48. Taking the CR timing belt off
3.
Right CR guide shaft rod spring
Release the Printhead FFC from the cable holders on the LD roller shaft holder.
And disconnect the Printhead FFC from the connector CN4 on the Main board.
Figure 4-51. Release Right Rod spring for CR shaft
Figure 4-49. Taking Printhead FFC off
Disassembly and Assembly
Disassembly
93
EPSON Stylus COLOR 480
5.
Revision B
Pull the left edge of the CR guide shaft upward to align it with the round cutout
portion. Then, holding the CR unit by hand, remove the CR guide shaft by sliding it to
left or right.
C H E C K
P O IN T
n Unlike the previous products, the oil pad is not built in the CR
n
n
n
n
unit.
Make sure that the tips of the CR guide shaft rod springs are set
in the holes in the Main frame.
Make sure that the CR guide shaft rod springs are correctly set
in the suitable position. Refer to Figure 4-50,Figure 4-51.
If you disassemble the CR unit after removing the CR unit from
the printer, make sure that the CR Grounding plate is assembled
in the suitable position in the CR unit. Refer to Figure 4-53.
.Make sure that the CR slider is assembled on the CR unit.
CR guide shaft
CR Grounding plate
Figure 4-52. Removing the CR guide shaft
C A U T IO N
Remove the CR guide shaft while holding the CR unit by hand. If
you remove the CR guide shaft without holding the CR unit, the
nozzle surface of the Printhead may come in contact with the
Paper guide front, which causes the dot missing problem.
CR slider
Figure 4-53. Grounding plate assembling position
n If you remove the Printhead from the CR unit, make sure that
the Head grounding plate is set in the CR unit. Refer to
Figure4-7.
n Make sure that the groove on the CR guide shaft must be set to
the left side.
Disassembly and Assembly
Disassembly
94
EPSON Stylus COLOR 480
C H E C K
P O IN T
Revision B
n If the CR unit is disassembled or replaced with a new one, make
sure that the CR timing belt is set in the assembling groove
correctly as following figure.
Assembling groove
CR timing belt
Figure 4-54. CR timing belt setting position
A D J U S T M E N T
R E Q U IR E D
n When you replace the CR unit with a new one, lubricate it with
the suitable amount of the G-55 grease by the specified position.
Refer to Chapter 6 Figure 6-4.
n When you replace the CR Pulley shaft with new one, lubricate it
with the suitable amount of G-26 grease by the specific position.
Refer to Chapter 6 Figure6-6.
n When removing or replacing the CR unit with a new one, adjust
the Gap (Bi-d). Refer to Page115.
Disassembly and Assembly
Disassembly
95
EPSON Stylus COLOR 480
Revision B
4.2.13 Disassembling ASF frame unit
1.
Remove the Housing from the printer. (Section 4.2.1 Housing removal)
2.
Remove the LD roller shaft holder unit (Section 4.2.7 LD Roller removal)
3.
Remove two screws (C.B.S.-TITE (P4), 3x6, F/Zn screw, C.B.S. Screw 3x6,F/Zn +
Plain washer 3.2 x1x 7,F/Zn) securing the ASF frame unit and remove the ASF frame
unit from the printer mechanism.
C.B.S TITE(P4), 3X6, F/Zn screw
Change lever unit
Combination gear 22.4, 32
C.B.S. Screw 3x6, F/Zn
Plain washer 3.2x1x7,F/Zn
Combination gear 11.2, 32.4
Figure 4-56. Removing the Gears from ASF frame unit
ASF Frame unit
5.
Remove the Compression Spring 2.67 located between the ASF Frame and the Hopper,
and remove the Hopper from the ASF frame.
ASF Hopper
Figure 4-55. Removing the screws securing the ASF frame
4.
Compression spring 2.67
Remove the following gears from the ASF frame.
n Combination gear 11.2, 32.4
n Combination gear 22.4, 32
n Change lever unit
ASF Frame
Figure 4-57. Removing the Compression spring 2.67
Disassembly and Assembly
Disassembly
96
EPSON Stylus COLOR 480
6.
Revision B
Remove the Torsion spring 25.7 from the bottom of the ASF frame and the Pad holder
(Paper return plate).
C H E C K
P O IN T
n Make sure that the each tip of the Torsion spring 25.7 is set in the
slot of the Pad holder and ASF frame. Refer to Figure 4-57.
n Make sure that the Pad holder moves smoothly after assembling
it to the ASF frame.
n Make sure the change lever setting position. Refer to following
figure.
Torsion spring 25.7
ASF Frame
Figure 4-58. Removing the Torsion spring 25.7
7.
Remove the Pad holder (Paper return plate) from the ASF frame.
Pad holder
Figure 4-60. Change lever setting position
ASF Frame
Figure 4-59. Removing the Pad holder (Paper return plate)
Disassembly and Assembly
Disassembly
97
EPSON Stylus COLOR 480
Revision B
.
n When you replace the ASF frame or Hopper with the new one,
make sure to lubricate the specific amount of G26 into the groove
on ASF frame. Refer to Figure 6-7 & Figure6-9 in the Chapter 6.
n Fasten the ASF unit C.B.S. TITE (P4) 3x6,F/Zn screw (left screw
in the following figure), Plain washer 3.2x1x7,F/Zn & C.B.S
3x6,F/Zn screw (right screw in the following figure) in the order
of following figure.
2
1
Figure 4-61. ASF fixing screws fastening order
n Tightening torque for screw
• C.B.S. 3x6 F/Zn screw for ASF
(right screw in above figure)
• C.B.S. TITE(P4) 3x6, F/Zn screw for ASF
(left screw in above figure)
Disassembly and Assembly
: 9+/-1 kgf.cm
: 9+/-1kgf.cm
Disassembly
98
CHAPTER
ADJUSTMENT
EPSON Stylus COLOR 480
Revision B
5.1 Overview
This section describes the detailed procedures of each adjustment by Adjustment
Program.
This section describes the procedure for adjustments required when the printer is
disassembled and assembled for repair or service.
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.
5.1.1 Required Adjustment
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 item should be
performed to ensure proper operation of the printer.
Table 5-1. Required Adjustment
Performance Priority
1
2
3
4
Replacing parts/Service item
Initial Ink
Charge
Head ID
Setting
Bi-D
Adjustment
Ink pad
Counter
reset
Replacing the Main Board.
NA
Q
R
NA
Replacing the printhead unit.
Q
R
S
NA
Replacing the CR motor.
NA
NA
Q
NA
Replacing or removing the CR
assembly.
NA
NA
Q
NA
Replacing the Waste drain ink
pad
NA
NA
NA
Q
This section describes the detailed procedures of each adjustment by Adjustment
Program.
W A R N IN G
In case any parts is removed and assembled on the repair product
while running the Adjustment program, turn off the printer certainly.
NOTE: “¡”: Required Adjustment. The number in the circle shows the
required adjustment order.
“NA”: Not applicable.
NOTE: Following adjustments are not required on this product.
- Platen Gap adjustment
- Head Angular adjustment.
- USB ID input
NOTE: When the Main board is replaced with new one, you may have to
replace the following parts also in case the EEPROM parameter back
up function is not available on the defective main board.
* Waste drain ink pad
* Both Black & Color Ink Cartridge
Adjustment
Overview
100
EPSON Stylus COLOR 480
Revision B
o Individual service adjustment program
5.1.2 Adjustment Program feature
This program provides you the adjustment item individually as same as the
previous adjustment program. The available functions are as following table.
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
Table 5-2. Individual service adjustment program
n This adjustment program operates only under Windows 95/98:
No.
Main Menu
1
Adjustment
Service
Head ID input
This program does not operate under DOS or Windows 3.X, NT.
n This adjustment program automatically install the appropriate
Bi-d adjustment
program according to your OS.
n Perform this adjustment program using parallel I/F port.
Head cleaning
Initial ink charge
This adjustment program is composed of following two main programs.
2
Maintenance
Refurbishment for DOA
Protection counter check / reset
EEPROM check / write
3
A4 check pattern print
A4 check pattern print
The user interface of the main menu on this program is shown below.
Figure 5-1. Individual service adjustment program main menu
Adjustment
Overview
101
EPSON Stylus COLOR 480
Revision B
o Sequential repair service program
The user interface of the Sequential repair service program is as following figure.
This program provides you the suitable adjustment order in the program according to
the repair parts. The available functions are as following table.
Table 5-3. Sequential repair service program
Repair item
Included Adjustment item
1
Printhead removal
Head Cleaning, Nozzle check,
Bi-d adjustment.
2
Printhead replacement
Initial charge, Head ID Input,
Nozzle check, Bi-d adjustment.
3
Main board replacement
EEPROM Back up, Load on EEPEOM
or
Head ID input, Bi-d adjustment,
Ink pad replacement, I/C replacement
(default setting, market setting)
4
CR Unit replacement or removal
Bi-d adjustment
5
CR Motor replacement
Bi-d adjustment
6
Printer mechanism replacement
Initial ink charge, Head ID input, Nozzle
check, Bi-d adjustment
7
Waste Ink pad replacement
Waste ink pad counter reset
Adjustment
Figure 5-2. Sequential repair service program main menu
5.1.3 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 Stylus COLOR 480 icon will be
automatically made in the program menu. Go “Start” -> “Program” and click the icon
to start this program.
Overview
102
EPSON Stylus COLOR 480
Revision B
3.
5.1.4 Adjustment Program Initial Setting menu
You have to input the following four items before entering the adjustment main menu.
o Model name (Stylus COLOR 480)
o Interface setting (LPT1, LPT2, LPT3)
Select the suitable destination in the market menu. “World” is the standard destination
setting except the ESP and EIO. The waste drain ink pad life for ESP & EIO product is
different from World standard. So, you have to select the suitable destination in order
to set the suitable waste drain ink pad life. This setting is used when the waste drain ink
pad counter is reset or the main board is replaced with new one in the adjustment
program.
o Market (World, ESP, EIO)
o Program type (Individual service adjustment program or Sequential repair service
program)
Follow the procedure below to input the initial settings.
1.
When you run this program, the following menu appears. Select the Stylus COLOR
480 in the screen below.
Figure 5-4. Destination Setting
4.
Select the Program type which you will run in the menu.
Figure 5-3. Model Name Selection
NOTE: This printer stores model name in the PROM. Therefore, even you select
the model name in the screen above, model name will not stored in the
EEPROM. Selecting model name in the screen above determines
respective special command for each model.
2.
Select the Parallel Interface port number which you connect the printer to your PC as
above Figure 5-3.
Figure 5-5. Program type selection.
Adjustment
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5.2 Sequential Repair Service Program feature
status even if the printer is error condition, and can control the printer under the error
condition. Following explain you the common function of the Sequential repair
service program.
5.2.1 Feature
o Quit
In this manual, we will explain mainly about the Sequential repair service program.
This program provides you the suitable adjustment order by selecting the repair item in
the Sequential repair service program main menu. In this program, following 7 items
are listed.
If you want to exit this program, click the “Quit” button. Following menu is
displayed on the screen. And clicking the “Quit” Button in the following menu exit
the adjustment program completely. Clicking the “Next” button returns to the Top
menu (Initial setting menu) of Figure 5-3.
o Printhead removal
o Printhead replacement
o Main board replacement
o CR unit replacement or removal
o CR motor replacement or removal
Figure 5-7. Quit function
o Printer mechanism replacement
o Menu
o Waste ink pad replacement
This function is used to stop the adjustment in the each sequential program and
clicking this “Menu” button returns to the Sequential repair service program main
menu of the Figure 5-6.
o Get status
This function is used to get the printer status and following figure is displayed on
the screen by clicking the” Get status” button. This function can get the printer
status even if the printer is error condition except the main logic circuit failure, and
control the printer by using the D4 mode functions.
Figure 5-6. Sequential repair service program main menu
The “Adjusted item” in the right column shows you the adjusted item which executed
in this program and it is easy to confirm the adjusted value. Additionally, this program
runs under the D4 (IEEE-1284.4) protocol. So, this program can get the several error
Adjustment
Figure 5-8. Get status function
In the next page, we will explain the each function of the “Get Status” function.
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n Reset the printer
1) Inquire
Clicking this button, you can get the following printer status.
n Ink level of the each ink cartridge
The available remaining ink amount is displayed with figure of Ink cartridge.
n Printer status
The status monitor can get the following 7kinds of the printer status depend on the
printer status.
* Maintenance error, * Paper jam, *Paper out * Fatal error, * Ink low, *Ink end, *
Printing
2) Close
Clicking this button, you can close the Status monitor and can return to the adjustment
menu.
3) D4 mode function
You can perform the following items directly from this menu.
This reset function is almost same as the Power on reset and following items are
reset by this function.
* Initialize printer mechanism.
* Clears the input data buffer
* Clears the print buffer
* Sets default values except I/F setting.
n Check the Protection counter (Waste drain ink pad counter check.)
In this function, you can check the Waste drain ink pad counter. We recommend
to use this function to check the counter after complete the repair.
Basically, you have to click the “Get Status” button to get the printer status.
But, when any error condition is detected by this program on the connected printer,
error status is displayed automatically as following figure.
n Execute Head cleaning
The suitable printhead cleaning is performed based on the cleaning order.
See the “Ink Sequence” on page 41.
n Print nozzle check pattern
This function performs the nozzle check printing.
n Exchange ink cartridge
In this function, you can select which ink cartridge you will exchange, and can
perform the I/C exchange sequence even if the printer is ink low/end condition.
Figure 5-10. Error status of Status menu
C A U T IO N
This program’s status monitor dose not display the “Paper out” error
status in the Bi-d adjustment even if the paper is out in the ASF.
When the paper is out in the ASF, this program continues to send the
paper feed command until the paper is set in the ASF.
Figure 5-9. Exchange ink cartridge
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4.
5.2.2 Printhead removal
When you remove the printhead from the printer mechanism and reinstall the removed
printhead to the printer mechanism, this repair item should be selected in the
Sequential repair service program.
1.
Install the removed printhead to the CR unit on the repair printer mechanism.
2.
Select the “Printhead removal” in the Sequential repair service program. Following
Printhead removal top menu is displayed.
Click the “Yes” button starts the Powerful CL in order to eject the air bubbles from
the printhead cavity. In this function, CL1’ is performed and about 1/8 ink of the
brand-new Black I/C and 1/18 ink of the brand-new Color I/C are consumed.
P o w e r fu l C le a n in g
Figure 5-13. Powerful cleaning
5.
For the next step, click the “Nozzle check” to check the nozzle condition.
After print the nozzle check pattern, following message is displayed.
Figure 5-11. Printhead removal program menu
3.
Clicking the “Powerful cleaning” displays the following message and instructs you to
install the brand-new I/C.
Figure 5-14. Confirmation message for nozzle condition
6.
If any segment in the nozzle check pattern has dot missing, click the “Yes” button to
perform the powerful cleaning again. If all segment is printed correctly, click the “No”
button to proceed the Bi-directional adjustment function.
Figure 5-12. Confirmation message for the brand-new I/C installation
Adjustment
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7.
Revision B
Click the Bi-directional adjustment to adjust the Bi-directional printing alignment.
In the following menu, select the suitable print mode which you want to adjust, and
click the “Print” button. Basically, select all printing mode for the 1st adjustment.
9.
Select the most aligned pattern number in the printed pattern and input the number in
the following menu.
Figure 5-17. Input the suitable pattern number
Figure 5-15. Bi-d adjustment menu
8.
By clicking the “Print” Button in the above menu, following message is displayed.
Set the paper in the ASF by following the message and click the “OK” button to start
the printing for the Bi-directional alignment check pattern.
10. After input the suitable pattern number, click the “Retry” button to return the Bidirectional check alignment +pattern print menu of Figure 5-15. When the “Print”
button is clicked for the 2nd check pattern printing, following message is displayed
When the same paper used for 1st check pattern printing is set in the ASF and click the
“OK” button in the following message, printer advances the paper automatically under
the 1st printed pattern and the 2nd check pattern is printed from the position.
Figure 5-16. Setting the new paper in the ASF
Figure 5-18. Setting the same paper in the ASF
C H E C K
P O IN T
The current setting is printed at the center of the 5kinds of the Bi-d
adjustment pattern. So, check the center pattern and select the most
aligned pattern number.
11. Repeated Step 7) to Step 10) to adjust the Bi-directional print alignment completely.
If you exit this Bi-directional print alignment program, click the “Finish” button on the
above Figure 5-17 or Click the “Menu” button.
12. Click the “Get status” button and check the waste drain ink pad counter in this
function. If the waste drain ink pad counter is around the limit counter, replace the pad
and reset the counter according to the customer request.
13. Click the “Menu” button to exit the program.
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5.2.3 Printhead replacement
When you replace the printhead with new one, this repair item should be selected in the
Sequential repair service program.
1.
NOTE: If you input the incorrect digits code for the Head voltage ID menu,
following error message is displayed.
Replace the Printhead with the new one and select the “Printhead replacement” item in
the Sequential repair service program menu. Following “Printhead replacement” menu
is displayed.
Figure 5-21. Error message for incorrect Head voltage input (1)
Figure 5-19. Printhead replacement program menu
2.
Click the “Head voltage ID Input” in the above menu. The screen below appears
Input the 6digits code by referring the head ID label stacked on the Printhead and click
the “OK” button.
Figure 5-22. Error message for incorrect Head voltage input (2)
Figure 5-20. Head voltage input menu
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3.
Revision B
After complete the Head voltage ID input, the following screen is displayed.
6.
After complete the Initial ink charge, following message is displayed.
In itia l in k c h a r g e h a s c o m p le te d
Figure 5-23. Initial ink charge function
4.
For the next step, select the “Initial ink charge” in the above menu. Following message
is displayed. Install the band-new I/C to the printer by following the message.
Figure 5-25. Nozzle check pattern function
7.
Figure 5-26. Confirmation message for nozzle condition
Figure 5-24. Confirmation message for brand-new I/C installation
8.
5.
After install the brand-new I/C, click the “OK” button to perform the Initial ink charge
in order to fill out the printhead cavity with the ink.
In this sequence, about 1/2 ink of the brand-new black I/C and 1/6 ink of the brand-new
color I/C are consumed. And it takes about 110 seconds.
If you click the “No” button, the program proceed the I/C exchange sequence.
Adjustment
Click the “Nozzle check” in the above menu to check the nozzle condition. After print
the nozzle check pattern, following message is displayed.
If any segment in the nozzle check pattern is missing, click the “Yes” button to
perform the powerful cleaning. If all segment is printed correctly, click the “No”
button to proceed the Bi-directional adjustment function.
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9.
Revision B
Click the Bi-directional adjustment to adjust the Bi-directional printing alignment.
In the following menu, select the suitable print mode which you want to adjust, and
click the “Print” button. Basically, select all printing mode for the 1st adjustment.
11. Select the most aligned pattern number in the printed pattern and input the number in
the following menu.
Figure 5-29. Input the suitable pattern number
Figure 5-27. Bi-d adjustment menu
10. By clicking the “Print” Button in the above menu, following message is displayed.
Set the paper in the ASF by following the message and click the “OK” button to start
the Bi-directional check pattern printing.
12. After input the suitable pattern number, click the “Retry” button to return the Bid irectional check pattern print menu of Figure 5-27. When the “Print” button is
clicked for the 2nd check pattern printing, following message is displayed.
When the same paper used for 1st check pattern printing is set in the ASF and click the
“OK” button in the following message, printer advances the paper under the 1st check
printed pattern and the 2nd check pattern is printed on from the position.
Figure 5-28. Setting the new paper in the ASF
Figure 5-30. Setting the same paper in the ASF
C H E C K
P O IN T
The current setting is printed at the center of the five Bi-d adjustment
patterns. So, check the center pattern and select the most aligned
pattern number.
13. Repeat Step 9) to Step 12) to adjust the Bi-directional print alignment completely.
If you exit this Bi-directional print alignment program, click the “Finish” button on the
above figure or click the “Menu”button.
14. Click the “Get status” button and check the waste drain ink pad counter in this
function. If the waste drain ink pad counter is around the limit counter, replace the pad
and reset the counter according to the customer request.
15. Click the “Menu” button to exit the program.
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2.
5.2.4 Main board replacement
Click the “Main board replacement” in the Sequential repair service program.
The following menu is displayed.
When you replace the main board with new one, this repair item should be selected in
the Sequential repair service program.
NOTE: Before replace the defective main board, connect the printer to the PC
and run this program to confirm the necessary logic circuit is active.
If the CPU and I/F receiver IC, EEPROM, RAM is not broken, Status
monitor will detect the Fatal error and displayed on the screen. In this
case, EEPROM back up function may be available.
1.
Connect the defective printer and check if the status monitor display the Fatal error.
If the status monitor display the Fatal error, click the “Close” button to proceed the
next step. (Most of the case, the fatal error is displayed).
Figure 5-32. Click the Main board replacement
3.
Click “EEPROM back up” to read out all EEPROM data from the defective main
board. The program starts to check the EEPROM condition on the defective Main
board by clicking the “OK” button in the following message display on the screen.
Figure 5-31. Close the Status monitor
Figure 5-33. Check the EEPROM condition
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4.
Revision B
If the EEPROM is normal condition, following message is displayed. Click the “OK”
button to start the EEPROM back up function.
6.
Turn on the printer and click the “Load on EEPROM “to copy the EEPROM back up
data to the new main board. It takes about 30 seconds to complete the EEPROM data
copy.
Figure 5-34. Start EEPROM back up function
In case the following message is displayed, the EEPROM back up function is
disable. Click the “OK” button to proceed the Step 9) to input the necessary data to
the new main board manually.
Figure 5-37. Copy the EEPROM data to the new main board.
7.
When the EEPROM back up data is copied successfully, following message is
displayed and the necessary service items for Main board replacement is completed.
Click the “Menu” button to exit this program.
Figure 5-35. EEPROM is defective.
5.
When the EEPROM back up is completed, following message is displayed.
Replace the defective main board with new one by following the message and click the
“OK” button after the replace the Main board.
Figure 5-38. EEPROM back up data copy succeed
8.
Click the “Get status” and check the Waste drain ink pad counter in this function. If the
waste drain ink pad counter is around the limit counter, replace the pad and reset the
counter according to the customer request.
Figure 5-36. Replace the defective main board with new one
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9.
Revision B
In case the EEPROM is broken on the defective main board and the EEPROM back up/
copy function is not available, replace the Main board with new one by following the
message and click the “OK” button.
12. After complete the Head ID input and Bi-d adjustment items, click the “Ink pad
replacement” button. Replace the Waste drain ink pad with new one by following the
message displayed on the screen. Turn on the printer after replace the Waste drain ink
pad with new one and click the “OK” button to write the market setting and the
default setting into the EEPROM.
Figure 5-39. Replace the defective main board with new one.
10. Click the “OK” button to proceed the following adjustment menu after turn on the
printer.
Figure 5-41. Replace the Waste drain in pad & Set the market setting
13. Click the “I/C replacement” button to replace the both I/C with new one.
Replace the both I/C with new one by following the message.
Figure 5-40. Required adjustment item for main board replacement
11. Carry out the “Head voltage ID input “and “Bi-d Adjustment” by following the
displayed procedure.
Figure 5-42. Replace the both I/C with new one.
14. Click the “Menu” button to exit the program.
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C A U T IO N
Revision B
n In case the EEPROM back up / copy function is not available and
C H E C K
P O IN T
Adjustment
main board is replaced with new one, the new main board dose
not have the current Ink counter and waste drain ink pad
counter. So, you have to replace the Waste drain ink pad and
both I/C with new one.
The current setting is printed at the center of the five Bi-d adjustment
patterns. So, check the center pattern and select the most aligned
patter number.
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5.2.5 CR unit replacement or removal
5.2.6 CR motor replacement or removal
1.
1.
After you replace or remove the CR unit in the service activity, Click the “CR unit
replacement or removal” in the Sequential repair service program.
Figure 5-43. CR unit replacement or removal
After you replace or remove the CR motor in the service activity, Click the “CR motor
replacement or removal” in the Sequential repair service program.
Figure 5-45. CR motor replacement or removal
2.
Click the” Bi-directional adjustment” to perform the Bi-directional printing alignment
by following the procedure displayed on the screen.
2.
Click the” Bi-directional adjustment” to perform the Bi-directional printing alignment
by following the procedure displayed on the screen.
3.
When the Adjustment is completed following message is displayed.
3.
When the Adjustment is completed following message is displayed
Figure 5-44. All adjustment is completed
Figure 5-46. All adjustment is completed
4.
Click the “Get status” button and check the waste drain ink pad counter in this
function. If the waste drain ink pad counter is around the limit counter, replace the pad
and reset the counter according to the customer request.
4.
Click the “Get status” button and check the waste drain ink pad counter in this
function. If the waste drain ink pad counter is around the limit counter, replace the pad
and reset the counter according to the customer request.
5.
Click the “Menu” button to exit this program.
5.
Click the “Menu” button to exit this program.
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5.2.7 Printer mechanism replacement
5.2.8 Waste ink pad replacement
Stylus COLOR 480 dose not have ASP printer mechanism. So, you may not have a
chance to use this function in your service activity. However, in case you change the
printer mechanism in your printer swap service, use this function.
The adjustment item and the order are same as “Printhead replacement”. So, as for the
detail, refer to Section 5.2.3 on page 108.
When the Waste drain ink pad is replaced with new one due to the maintenance error,
you have to replace the Waste drain ink pad with new one and reset the counter.
1.
Connect the printer to your PC and run the Adjustment program. If the waste drain ink
pad counter reaches to the limit counter, the status monitor of this program displays the
“Maintenance error” automatically.
NOTE: Use the function for the following case.
* Printer mechanism (except the waste drain ink pad and circuit board,
printhead) is changed with other one
1.
Click the “Printer mechanism replacement” in the Sequential repair service program.
Following menu is displayed.
C h e c k th e p r o te c tio n c o u n te r
Figure 5-48. Maintenance error
2.
Figure 5-47. Printer mechanism replacement
2.
Turn off the printer and replace the Waste drain ink pad with new one. Click the
“Clear” button to clear the waste drain ink pad counter stored in the EEPROM on the
Main board after turn on the printer.
If the status monitor dose not detect the Waste drain ink pad counter correctly, click the
“Waste ink pad replacement” in the sequential repair service program and use the
following function. Clicking the “Protection counter clear” button clears the counter in
the EEPROM. The suitable waste drain ink pad life is set in the EEPROM
automatically according to the market setting of the initial setting menu.
Follow the adjustment item displayed on the above menu.
For the detail, refer to Section 5.2.3 on page 108 due to the adjustment item and order
are same as “Printhead replacement”.
Figure 5-49. Waste drain ink pad replacement
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5.3 Individual service adjustment program feature
This program menu is almost same as the previous adjustment program. However, this
program can run under the D4 protocol. So, followings new function is available.
o Get status function
This function can check the printer status even if the printer is error condition
except the main (CPU, I/F receiver IC, RAM) logic circuit failure, and control the
printer by using the D4 mode functions.
o Protection counter reset/check function (waste drain ink pad counter)
The previous adjustment program runs under the IEEE1284 Nibble protocol.
So, in case the protection counter reaches to the limit counter, the protection
counter reset function is not available because the printer is error condition
(maintenance error). However, this function of this program can reset the counter
even if the maintenance error occurs.
o EEPROM check function
You can check the EEPROM data or can write down the specific data into the
EEPROM directly by using this function even if the printer is error condition.
However, in case the one of the main logic circuit (CPU, I/F receiver IC,
EEPROM, RAM) is broken, this function is not available.
o Refurbishment for DOA
This function charge the cleaning liquid into the printhead cavity and eject the
cleaning liquid to the waste drain ink pad. By this operation, the printhead and cap
assembly is cleaned. Prepare the dummy ink cartridge and S46 cleaning liquid,
injector before use this program.
5.3.1 Get status function
This function is available in the Individual service adjustment program also. Use this
function depend on the situation. However, if any error occurs on the printer while
using the program, Status monitor is displayed automatically and indicates the error
status for your confirmation. This function is completely same as the Get status
function built in the Sequential repair service program.
5.3.2 Head cleaning function
This printhead cleaning is CL1’and about 1/8 of the brand-new black I/C and 1/18 of
the brand-new color I/C are consumed. Before use this function, check the remaining
ink amount of the both I/C by using the “Get status” function.
5.3.3 Initial ink charge function
This function consume about 1/2 of the brand-new black I/C and 1/7 of the brand-new
color I/C. Before use this function, check the remaining ink amount of the both I/C by
using the “Get status” function. So, do not use this function frequently.
5.3.4 Protection counter check/reset
This function resets or checks the current waste drain ink pad counter.
Especially, use the counter check function before return the repair product to your
customer. If the waste drain ink pad counter is near end condition, contact your
customer and recommend your customer to replace the waste drain ink pad with new
one.
Depending on the situation, use the individual adjustment program. In this section, we
will explain only the important item and notice about the usage of this program.
Adjustment
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5.3.5 EEPROM check function
You can check the EEPROM data or can write the specific data into the specific
address of the EEPROM directly even if the printer is error condition. (In case one of
the main logic circuit such as CPU, I/F receiver IC, RAM, EEPROM is broken, this
function is not available)
C A U T IO N
n Do not use this function except the special case. Careless usage
causes any trouble.
Select the “EEPROM check” function in the Maintenance menu. The main menu of
this function is as following figure. The following three function is built in this
program.
n Check the cleaning counter
You can check the following information stored in the EEPROM.
* How many times of the manual cleaning were performed on the product.
* What kind of the manual cleaning was performed on the product.
n Check the EEPROM data
You can check the specific data stored in the specific address of the EEPROM.
Input the specific address with hexadecimal code by referring Section 7.1.2 on
page 131 (EEPROM map). Use this function in your analysis usefully.
n Change EEPROM data
You can change the specific data stored in the specific address of the EEPROM.
However, do not use this function except the special case. Careless usage causes
any trouble.
Figure 5-50. EEPROM function
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o Exchange sequence 1
5.3.6 Refurbishment for DOA
If you clean the cavity of the printhead and cap assembly, this function will be useful.
C A U T IO N
n After carry out this function, replace the waste drain ink pad
n
n
n
n
n
with new one and reset the Waste drain ink pad counter.
Otherwise, the ink or S46 liquid may leak from the pad during
the transportation.
Prepare the following tool.
* Dummy ink cartridge, Injector, S46 liquid
Do not carry out this program (Exchange sequence 1&2)
repeatedly. This operation is available only one time.
Excessive operation causes overflow of the ink& S46 liquid.
When you refurbish the repair product by using this program,
do it on your responsibility.
When you charge S46 liquid into the dummy ink cartridge with
the Injector, make sure fill out the dummy ink cartridge with S46
liquid. In case enough S46 liquid is not charged into the dummy
cartridge, the printhead will not cleaned and not filled with the
S46 liquid enough in this operation.
Keep the S46 liquid and the dummy ink cartridge clean.
Set the dummy I/C filled with S46 liquid into the CR unit and click the
“EXCHANGE SEQUENCE1” in the Transportation Liquid Exchange menu.
The S46 liquid is charged into the printhead cavity and ink is discharged from
printhead cavity to the cap.
o Exchange Sequence 2
Remove the dummy I/C from the CR unit and click the “EXCHANGE
SEQUENCE2” in the Transportation Liquid Exchange menu. In this sequence, the
S46 liquid is not discharged from the printhead and only the ink in the cap is
discharged to the waste drain ink pad. After complete this sequence, this program
set the initial ink charge flag into the EEPROM and reset the several ink
consumption counters to “0”.
Select the “Refurbishment for DOA” function in the Maintenance menu. The main
menu of this function is as following figure.
Figure 5-51. Refurbishment for DOA
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5.3.7 A4 Check pattern
We recommend to use this function to check the repaired product quality in your final
stage of your repair. The following 6 items are printed on the check pattern.
Figure 5-52. A4 Check pattern
Do not print the A4 Check pattern on the EPSON exclusive paper
such as Photo quality ink jet paper. This check pattern is for the plain
paper. So, use the Plain paper for this check pattern printing.
C A U T IO N
C H E C K
P O IN T
n The check point for the first black and each color solid pattern
(beta pattern 360 x 360dpi normal dot) in the A4 Check pattern
is as follows.
- Any white line is not observed
- Uneven banding is not observed extremely
n The check point for the second Nozzle check pattern (120dpi) is
as follows.
- Ink is fired from all nozzles.
- Uneven banding is not observed extremely.
n The check point for the third Alignment pattern is as follows.
- Each vertical line is printed straight.
n If any incorrect printing is observed on the A4 Check pattern,
perform the head cleaning or bi-d adjustment. If the
phenomenon is not improved, replace the printhead or suitable
mechanical parts.
Adjustment
Individual service adjustment program feature
Figure 5-53. A4 Check pattern
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CHAPTER
MAINTENANCE
EPSON Stylus COLOR 480
Revision B
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 acetone
to clean the exterior parts of printer like the housing. These
chemicals may deform or deteriorate the components of the
printer.
n Be careful not to damage any components when you clean inside
the printer.
n 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.
n Do not use cleaning sheet included in the media for normal usage.
It may damage the coated surface of PF roller.
If the adhesive surface of the cleaning sheet is set to the ASF LD
roller side and used to clean the ASF LD roller surface, it is no
problem.
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
122
EPSON Stylus COLOR 480
Revision B
2.
6.1.2 Service Maintenance
If any abnormal print (dot missing, white line, etc.) has occurred or the Status monitor
indicates Maintenance Request Error (This error is displayed as “unknown error” in the
STM3), take the following actions to clear the error.
Select the Head Cleaning in the Printer driver utility and perform the Head cleaning.
After performing the head cleaning sequence, perform the print check. If you repeat
cleaning without print check, the weakest cleaning, CL1 will be repeated.
o Head Cleaning
When dot missing or banding phenomenon has occurred, printhead cleaning
operation is required by using the built-in head cleaning function. This function
can be executed only from the Printer driver utility and Service Adjustment
program because this printer dose not have any control panel.
Stylus COLOR 480 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 in the Printer,
driver utility, the most appropriate cleaning mode is selected and therefore the
cleaning completion period varies depending on the mode. (Refer to “Ink
Sequence” on page 41.)
The following is the process to perform the head cleaning from the Printer driver
utility. As for the operation of the Adjustment program, refer to Chapter 5
Adjustment.
1.
Make sure that the printer is in stand-by state by using the Status monitor 3.
If the printer is in standby mode, following figure is indicated on the monitor.
Figure 6-2. Head cleaning function in the Printer driver utility
Figure 6-1. Status monitor 3 indication
Maintenance
Overview
123
EPSON Stylus COLOR 480
Revision B
o Maintenance Request Error (Unknown error)
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, Unknown Error is indicated on Status monitor 3 as following
figure.
6.1.3 Lubrication
The characteristics of the grease have great affects on the mechanical function and
durability, especially does the characteristics about temperature environment. The type
and amount of 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 grease to the specified part of the printer mechanism during servicing.
C A U T IO N
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.
n Never apply larger amount of grease than specified in this
manual.
Table 6-1. Specified Lubricants
Figure 6-3. Maintenance Error indication in STM3
Type
Name
EPSON Code
Supplier
Grease
G-26
B702600001
EPSON
Grease
G55
1055459
EPSON
In this case, replace the Waste Ink Pad and clear the Waste Ink Counter stored in
EEPROM. Waste Ink Counter can be reset only from the Adjustment program because
this printer dose not have control panel. As for the procedure, refer to Chapter 5
Adjustment.
Maintenance
Overview
124
EPSON Stylus COLOR 480
Revision B
Table 6-2. Lubrication Point
Table 6-2. Lubrication Point
No.
No.
Lubrication Type/Point
Remarks
1
<Lubrication Point>
• Inside the CR shaft hole of the CR unit.
Refer to Figure 6-4, "Lubrication point 1".
<Lubrication Type>
• G-55
<Lubrication Amount>
• Whole inside the CR shaft hole evenly.
40+/15mg x 2
• Do not attach the grease to other
portion of the CR unit.
• Use a syringe to apply it.
• Move the CR guide left and
right, smooth out the Geese on
the surface of the CR guide
shaft.
• After lubrication, make sure that
the carriage moves smoothly.
• Do not attach the grease to the
paper path.
• Use a syringe to apply it.
2
<Lubrication Point>
• Contact point between PF roller and the PF
grounding spring. Refer to Figure 6-5,
"Lubrication point 2".
<Lubrication Type>
• G-26
<Lubrication Point>
• Φ1mm x 5mm
• Use a syringe to apply it.
3
<Lubrication Point>
• Shaft of the Pully driven shaft. Refer to
Figure 6-6, "Lubrication point 3".
<Lubrication Type>
• G-26
<Lubrication Amount>
Φ1mm x 1mm
• Use a syringe to apply it.
• After lubrication, move the ASF
hopper manually and smooth out
the grease inside the ASF frame.
4
<Lubrication Point>
• Inside the sliding slot for ASF Hopper on
the ASF Frame.Refer to Figure 6-7,
"Lubrication point 4".
<Lubrication Type>
• G-26
<Lubrication Amount>
• Φ1mm x 4points
Maintenance
Overview
Lubrication Type/Point
Remarks
• Use a syringe to apply it.
• After lubrication, move the CR
unit left or right and smooth out
the grease on the Front frame.
5
<Lubrication Point>
• Specified both edges area on the Front
frame. Refer to Figure 6-8, "Lubrication
point 5".
<Lubrication Type>
• G-26
<Lubrication Amount>
• Φ1mm x 40mm x 2 areas
• The Cam parts on the LD roller
shaft must touch the G-26
lubricated on the ASF hopper in
the LD roller shaft rotation.
6
<Lubrication Point>
• Between the Cam parts on the LD roller
shaft and the ASF Hopper. Refer to Figure
6-9, "Lubrication point 6".
<Lubrication Type>
• G-26
<Lubrication Amount>
• Φ1mm x 1mm
7
<Lubrication Point>
• Surface of the shaft on the Spur gear 15, EJ
at the Pump unit side. Refer to Figure 6-10,
"Lubrication point 7".
<Lubrication Type>
• G-26
<Lubrication Amount>
• Φ1mm x 1mm
125
EPSON Stylus COLOR 480
Revision B
G-55
G-26
Figure 6-4. Lubrication point 1
Figure 6-6. Lubrication point 3
G-26
G-26
Figure 6-7. Lubrication point 4
Figure 6-5. Lubrication point 2
Maintenance
Overview
126
EPSON Stylus COLOR 480
35mm
Revision B
40mm
40mm
35mm
G-26
G-26
Figure 6-10. Lubrication point 7
Figure 6-8. Lubrication point 5
G-26
Figure 6-9. Lubrication point 6
Maintenance
Overview
127
CHAPTER
APPENDIX
EPSON Stylus COLOR 480
Revision B
7.1 Connector Summary
Table 7-1. Connector Summary for C367MAIN/MAIN-B
7.1.1 Major Component Unit
Connector
Function
Table to refer to
CN1
For connection with the HP/PE/BCO/CCO sensor
Table 7-2
o Main Board (C367MAIN or C367MAIN-B)
CN2
For connection with the CR motor
Table 7-3
o Power Supply Board (C367PSB/PSE)
CN3
For connection with the PF motor
Table 7-4
CN4
For connection with the printhead
Table 7-5
CN5
For connection with the power supply board
Table 7-6
CN6
For connection with the parallel interface
Refer to “IEEE-1284
Parallel I/F (Forward
Channel)” on page 21
The Major component units of this printer are as follows.
The figure below shows how these components connect.
C367PSB/PSE
C367PSB
CN2
CN5
Table 7-2. CN1 - HP/PE/BCO/CCO Sensor
C367MAIN/
C367MAIN
MAIN-B
CN1
CN6
Parallel I/F
AC Power
CN4
CN3
CN2
Pin
Signal Name
I/O
1
HPPE
In
Sensor detect signal
2
GND
---
Ground
3
HPPEV
---
Sensor Power Supply
CN1
Printhead
PF Motor
Table 7-3. CN2 - CR Motor
CR Motor
Printer Mechanism
HP/PE/BCO/
CCO Sensor
Figure 7-1. Connection of the Major Components
See the following tables for the connector summary for the C367MAIN board and each
connector’s pin alignment.
Appendix
Function
Pin
Signal Name
I/O
1
CRA
Out
Phase drive signal (A)
2
CRB
Out
Phase drive signal (-A)
3
CR-A
Out
Phase drive signal (B)
4
CR-B
Out
Phase drive signal (-B)
Connector Summary
Function
129
EPSON Stylus COLOR 480
Revision B
Table 7-6. CN5 - Power Supply Board
Table 7-4. CN3 - PF Motor
Pin
Signal Name
I/O
1
PFA
Out
2
PFB
3
4
Function
Pin
Signal Name
I/O
Phase drive signal (A)
1
+42V
---
Mechanism drive power supply
Out
Phase drive signal (-A)
2
+42V
---
Mechanism drive power supply
PF-A
Out
Phase drive signal (B)
3
GND
---
Ground
PF-B
Out
Phase drive signal (-B)
4
GND
In
Energy saving signal
5
NC
In
Not connected
6
GND
---
Ground
7
GND
---
Ground
8
+5V
---
Logic power supply
Table 7-5. CN4 - Printhead
Pin
Signal Name
I/O
1
THM
In
2
CH
Out
Waveform selection signal for MS shot &
variable shot
3
GND
---
Ground
4
LAT
Out
Head data latch pulse output
5
GND
---
Ground
6
NCHG
Out
All nozzle fire selection pulse
7
GND
---
Ground
8
SCK
Out
Serial clock
9
GND
---
Ground
10
SI2
Out
Print data output (2)
11
SP
Out
Select signal for CH signal
12
SI1
Out
Print data output (1)
13
VDD
---
Logic power supply (+5V)
14
GND2
---
Ground
15
COM
---
Head drive pulse (trapezoid waveform)
16
VHV
---
+42V power supply for nozzle selector
Appendix
Function
Thermistor detect signal
Connector Summary
Function
130
EPSON Stylus COLOR 480
Revision B
7.1.2 EEPROM Address Map
Table 7-7. EEPROM Address Map (continued)
Address
Table 7-7. EEPROM Address Map
Address
Explanation
Setting
00H
QPIT
setting
Factory
setting
5AH
5AH
0FH
0FH
Password 0
01H
02H
Market
Explanation
Setting
00H
Factory
setting
0EH
Head rank MW-ID
00H
00H
0FH
Reserved
00H
00H
5AH
5AH
0FH
0FH
10H
Password 1
11H
0: World
1: Japan
2: Custom (MJ-)**
3: Custom (Stylus COLOR)**
4: Custom (other name)**
QPIT
setting
12H
Head actuator rank
ID for IWAB
00H
00H
13H
Head actuator rank
ID for IWCD
00H
00H
00H
03H
1st dot adjustment
-40 ≤ n ≤ 40 (by 1/1440 inch)
00H
(*1)
14H
Head actuator rank
ID for IWEF
00H
00H
04H
Bi-D adjustment data
(Multi shot 2)
-36 ≤ n ≤ 36 (by 1/1440 inch)
00H
(*1)
15H
Reserved
00H
00H
05H
Bi-D adjustment data
(Multi shot 1)
-36 ≤ n ≤ 36 (by 1/1440 inch)
00H
(*1)
16H-19H
Custom EEPROM
sub number
00H
00H
06H
Uni-D adjustment
data
-36 ≤ n ≤ 36 (by 1/1440 inch)
00H
(*1)
1AH1DH
Reserved
00H
00H
07H
Bi-D adjustment data
(Variable shot)
-36 ≤ n ≤ 36 (by 1/1440 inch)
00H
(*1)
1EH
Reserved
00H
00H
1FH-21H
Reserved
00H
00H
08H
Carriage speed
adjustment data
-4 ≤ n ≤ 4 (by G.A. timer unit)
00H
00H
09H
22H
Interface selection
0: Auto
2: Serial
(*1)
23H
Interface wait time
0 to 255 (by second)
0AH
0AH
00H
(*1)
24H
Parallel I/F speed
(Reserved)
0: High speed
1: Normal
00H
00H
Head actuator rank
ID for VhM
(*1)
25H
IEEE1284.4 for
Parallel
0: Auto
2: Off
1: On
00H
01H
01H
0CH
Head actuator rank
ID for VhV
00H
(*1)
26H
Reserved for
IEEE1284.4 for USB
0: Auto
2: Off
1: On
00H
00H
0DH
Head actuator rank
ID for AR
00H
(*1)
27H
Print direction
control
0: Bi-D
2: Auto
1: Uni-D
02H
02H
00H
00H
Head actuator rank
ID for VhL
00H
0AH
Head actuator rank
ID for VhN
0BH
Appendix
Connector Summary
1: Parallel
3: USB (Reserved)
131
EPSON Stylus COLOR 480
Revision B
Table 7-7. EEPROM Address Map (continued)
Address
Explanation
28H
Reserved
29H
Bi-d Alignment
request
2AH
Reserved for CG
table
Setting
bit2 :Bi-d Alignment request
(0=request, 1=no request)
2BH-2FH
30H-39H
Reserved for USB
3AH-3DH
Table 7-7. EEPROM Address Map (continued)
QPIT
setting
Factory
setting
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
3EH
CR-phase of Home
00H
00H
3FH
reserved
00H
00H
5AH
5AH
0FH
0FH
10H
10H
40H
Address
43H
Explanation
Ink flags 2
Password 3
41H
42H
Ink flags
bit7: reserved
bit6: black “one time”
bit5: color “one time”
bit4: Initial fill required
bit3: reserved
bit2: in cleaning seq.
bit1: black CL required
bit0: color CL required
Setting
bit5: Printed after Cleaning
0: Not printed after Cleaning
1: Printed after Cleaning
bit4: YMC first cartridge
0: Not first cartridge
1: first cartridge
bit3: Black first cartridge
0: Not first cartridge
1: first cartridge
bit2: YMC cartridge changed
and cleaned
0: first cartridge
1: changed
bit1: Black cartridge changed
and cleaned
0: first cartridge
1: changed
bit0: Black cartridge changed
and cleaned
0: with YMC cartridge
1: alone
QPIT
setting
Factory
setting
00H
00H
44H-47H
Ink counter Cb (total)
1 count = 100 (ng)
00H
00H
48H-4BH
Ink counter Cy (total)
1 count = 100 (ng)
00H
00H
4CH-4FH
Ink counter Cm
(total)
1 count = 100 (ng)
00H
00H
5AH
5AH
0FH
0FH
00H
00H
50H
Password 4
51H
52H-55H
Appendix
Connector Summary
Ink counter Cc (total)
1 count = 100 (ng)
132
EPSON Stylus COLOR 480
Revision B
Table 7-7. EEPROM Address Map (continued)
Table 7-7. EEPROM Address Map (continued)
QPIT
setting
Factory
setting
Cleaning counter for
CL1 counter
00H
00H
Cleaning counter for
CL1’ counter
00H
58H
Cleaning counter for
CL2 counter
00H
59H
Cleaning counter for
out of HP CL counter
00H
00H
5AH
Cleaning counter for
timer cleaning
counter
00H
00H
5BH
Cleaning counter for
Bk replace CL
counter
00H
00H
5CH
Cleaning counter for
YMC replace CL
counter
00H
00H
5DH
Reserved
00H
00H
5EH
Reserved
00H
00H
5FH
Reserved
00H
00H
5AH
5AH
0FH
0FH
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
Address
Explanation
56H
57H
60H
Setting
00H
Address
Explanation
QPIT
setting
Factory
setting
68H
Reserved
00H
00H
69H
Reserved
00H
00H
Time data command which is sent
from printer driver is stored only
when the Timer CL is performed.
00H
00H
00H
00H
accumulated printing
time
0: minute
2: 30 minutes
4: 90 minutes
00H
00H
00H
00H
CL Time without
timer command
Time data which is generated in the
CPU clock is stored.
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
6AH
CL time
00H
Setting
6BH
6CH
6DH
6EH
6FH
70H
71H
72H-79H
7AH-7FH
1: 15 minutes
3: 60 minutes
5: 120 minutes
Reserved for
Password 7
customized model
name
string of model field for Device ID
Password 5
61H
62H
Ink counter Rb0
63H
64H
Ink counter Ry0
65H
66H
Ink counter A
67H
Appendix
Connector Summary
133
EPSON Stylus COLOR 480
Revision B
7.2 Component Layout
Figure 7-2. C367MAIN Component Layout (Parts Side)
Appendix
Figure 7-3. C367 MAIN B Component Layout
Component Layout
134
EPSON Stylus COLOR 480
Revision B
Figure 7-5. C367PSE Component Layout
Figure 7-4. C367PSB Component Layout
Appendix
Component Layout
135
EPSON Stylus COLOR 480
Revision B
7.3 Exploded Diagram
Following pages shows exploded diagram.
Figure 7-6. Stylus Color 480 Exploded Diagram 1
Appendix
Exploded Diagram
136
EPSON Stylus COLOR 480
Revision B
Figure 7-7. Stylus Color 480 Exploded Diagram 2
Appendix
Exploded Diagram
137
EPSON Stylus COLOR 480
Revision B
Figure 7-8. Stylus Color 480 Exploded Diagram 3
Appendix
Exploded Diagram
138
EPSON Stylus COLOR 480
Revision B
Figure 7-9. Stylus Color 480 Exploded Diagram 4
Appendix
Exploded Diagram
139
EPSON Stylus COLOR 480
Revision B
Figure 7-10. Stylus Color 480 Packing material
Appendix
Exploded Diagram
140
EPSON Stylus COLOR 480
Revision B
Table 7-8. Stylus COLOR 480 Parts List
7.4 Parts List
Table 7-8. Stylus COLOR 480 Parts List
Code
Parts Name
100
HOUSING
101
COVER,PRINTER
102
PAPERSUPPORT
103
HOUSING,SUPPORT,LEFT
104
SHIELDPLATE,UPPER
105
COVER,SHIELD PLATE,LEFT
106
SHIELD PLATE,M/B;B
107
LOGO PLATE
108
HOUSING, FRONT
109
FOOT
110
GROUNDING,PLATE
122
C.B.S. SCREW
123
C.B.(O) SCREW,4X5,F/ZG
124
C,B,S-TITE R.SCREW,3X6,F/UC
125
C.B.P-TITE SCREW,3X8,F/ZN
200
BOARD ASSY., MAIN
C37
ALUMINIUM ELECTROLYTIC CAPACITOR
C39
ALUMINIUM ELECTROLYTIC CAPACITOR
C40
ALUMINIUM ELECTROLYTIC CAPACITOR
C41
ALUMINIUM ELECTROLYTIC CAPACITOR
C45
ALUMINIUM ELECTROLYTIC CAPACITOR
C48
ALUMINIUM ELECTROLYTIC CAPACITOR
Appendix
Parts List
Code
Parts Name
C64
ALUMINIUM ELECTROLYTIC CAPACITOR
CN1
CONNECTOR
CN2
CONNECTOR
CN3
CONNECTOR
CN4
CONNECTOR
CN6
CONNECTOR 57RE-40360-830B(D7B)
CR2
CERAMIC CRYSTAL
D1
DIODE
D2
DIODE
D3
DIODE
D4
DIODE
D5
DIODE
D6
DIODE
D7
DIODE
D8
DIODE
F1
FUSE
HT1
HEAT SINK
IC10
TTL-IC
IC3
EP-ROM
IC3
IC SOCKET
IC4
DRAM
IC5
EEPROM,AT93C46-10SC
IC6
RESET IC
IC7
IC
IC8
HIC
141
EPSON Stylus COLOR 480
Revision B
Table 7-8. Stylus COLOR 480 Parts List
Table 7-8. Stylus COLOR 480 Parts List
Code
Parts Name
Code
Parts Name
IC9
HIC
520
COMBINATION GEAR,9.6,33.6
Q1
C.B.SCREW,2.6X6,F/ZN
521
SPACER,C-RING
Q1
TRANSISTOR
522
ROLLER,PF
Q2
C.B.SCREW,2.6X6,F/ZN
523
BUSHING,ROLLER,PF
Q2
TRANSISTOR
524
BUSHING,ROLLER,PF,LEFT
300
BOARD ASSY.,POWER SUPPLY
525
SPACER,FASTEN,ROLLER,PF
501
FRAME,MAIN
526
GROUNDING WIRE,ROLLER,PF
502
REINFORCEMENT PLATE,HOLDER
527
C-RING
503
HOLDER,MOTOR ASSY.,CR
528
PLANE WASHER,12.2X0.5X15
504
COMPRESSIONSPRING,15.7
529
RODSPRING,SHAFT,CR,GUIDE
505
PUMP ASSY.
530
CARRIAGE
506
CAP ASSY.
531
SHAFT,CR,GUIDE
507
MOTOR ASSY.,CR
532
SLIDER,CR
508
MOTOR ASSY.,PF
533
GROUNDINGPLATE,HEAD
509
TIMINGBELT
534
SPUR GEAR,15,EJ
510
SPUR GEAR,15
535
ROLLER,EJECT
511
SPRINGPIN,2X14.5
536
PAPERGUIDE,ERONT
512
FRAME,FRONT
537
COVER,CARTRIDGE,BK
513
PULLEY,DRIVEN
538
COVER,CARTRIDGE,C
514
SHAFT,PULLEY,DRIVEN
539
TORSION SPRING,52.92
515
SPUR GEAR,34.2
540
PAPERGUIDE,UPPER
516
COMBINATION GEAR,12.6,18.4
541
ROLLER,DRIVEN
517
COMPRESSION SPRING,5.85
542
SHAFT,ROLLER,DRIVEN
518
SPURGEAR,15.2
543
HOLDER,STARWHEEL,FRONT
519
COMBINATION GEAR,8.4,21.6
544
HOLDER,STARWHEEL,REAR
Appendix
Parts List
142
EPSON Stylus COLOR 480
Revision B
Table 7-8. Stylus COLOR 480 Parts List
Table 7-8. Stylus COLOR 480 Parts List
Code
Parts Name
Code
Parts Name
545
STARWHEEL ASSY.,8;E
720
SPUR GEAR,35.2
546
ROD SPRING,STAR WHEEL
721
COMBINATION GEAR,11.2,32.4
547
C.C.S.SCREW
722
COMBINATION GEAR,22.4,32
548
PAPERGUIDE,LEFT
723
CABLE,HEAD;B
549
SPACER,COVER CARTRIDGE
724
COMPRESSION SPRING,4.80
700
PRINT HEAD
725
TORSIONSPRING,25.7
701
LEVER,CHANGE
726
TORSIONSPRING,0.22
702
COMPRESSION SPRING,0.98
727
COMPRESSION SPRING 3.75
703
HARNESS,DETECTOR
728
SHAFT,ROLLER,LD,SUPPORT
704
DETECTOR,HP;C
729
C.P.S-TITE(P4),3X6,F/ZN
705
HOLDER,SHAFT
730
TRAY,POROUSPAD
706
LEVER,DETECTOR,HP
731
POROUSPAD,INKEJECT,LARGE
707
EDGEGUIDE
732
POROUSPAD,INKEJECT,SMALL
708
HOPPER
733
SHEET,PROTECTION;D
709
FRAME,ASF
734
CLEANER, HEAD ASP
710
PAD,HOPPER
735
FERRITE CORE
711
HOLDER,PAD
736
HEXAGON NUT
712
PAD,LD,SMALL
1
INDIVIDUAL CARTON BOX FOR AMERICA
713
PAD,BRAKE,EDGE GUIED
3
PAD PRINTER
714
PAD,LD,C
4
PLASTIC PROTECTIVE BAG,360X680X0.03T
715
LEVER,DETECTOR,PE
NON FIG
INK CARTRIDGE,B,OVERSEAS,AS
716
ROLLER,LD
NON FIG
INK CARTRIDGE,C,OVERSEAS,AS
717
EXTENSION SPRING,0.143
NON FIG
SOFTWARE CD-ROM,EAI
718
SHAFT,ROLLER,LD
NON FIG
USER’S GUIDE
719
CLUTCH
NON FIG
SETTING UP MANUAL
Appendix
Parts List
143
EPSON Stylus COLOR 480
Appendix
Revision B
Parts List
144
EPSON Stylus COLOR 480
Revision B
7.5 Electrical Circuits
See the following pages for the electric circuit diagrams below:
o C367MAIN control circuit board
o C367PSB power supply circuit board
o C367PSE power supply circuit board
Appendix
Electrical Circuits
145
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