Epson WP-M4595, WF-4525, WF-4521, WF-4095, WF-4015, WF-4011 Service Manual
SERVICE MANUAL
Mono Inkjet Printer
Epson WP-M4525/4521
Epson WP-M4595
Epson WP-M4015/4011
Epson WP-M4095
CONFIDENTIAL
SEMF12-009
Notice:
All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or
by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of
SEIKO EPSON CORPORATION.
All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be
detected, SEIKO EPSON would greatly appreciate being informed of them.
The contents of this manual are subject to change without notice.
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.
Note :Other product names used herein are for identification purpose only and may be trademarks or r egistered
trademarks of their respective owners. EPSON disclaims any and all rights in those marks.
All safety procedures described here shall be strictly adhered to by all parties servicing and maintaining this
product.
DANGER
Strictly observe the following cautions. Failure to comply could result in serious bodily injury or loss of life.
1. Always disconnect the product from the power source and peripheral devices when servicing the product or
performing maintenance.
2. When performing works described in this manual, do not connect to a power source until instructed to do so.
Connecting to a power source causes high voltage in the power supply unit and some electronic components
even if the product power switch is off. If you need to perform the work with the power cable connected to a
power source, use extreme caution to avoid electrical shock.
WARNING
Strictly observe the following cautions. Failure to comply may lead to personal injury or loss of life.
1. Always wear protective goggles for disassembly and reassembly to protect your eyes from ink in working. If
any ink gets in your eyes, wash your eyes with clean water and consult a doctor immediately.
2. When using compressed air products; such as air duster, fo r cleaning during repair and maintenance, the use
of such products containing flammable gas is prohibited.
PRECAUTIONS
Strictly observe the following cautions. Failure to comply may lead to personal injury or damage of the product.
1. Repairs on Epson product should be performed only by an Epson certified repair technician.
2. No work should be performed on this product by persons unfamiliar with basic safety knowledge required for
electrician.
3. The power rating of this product is indicated on the serial number/rating plate. Never connect this product to
the power source whose voltages is different from the rated voltage.
4. Replace malfunctioning components only with those components provided or approved by Epson;
introduction of second-source ICs or other non-approved components may damage the product and void any
applicable Epson warranty.
5. The capacitors on he Main Board may be electrically charged right after the power turns off or after driving
motors which generates counter electromotive force such as when rotating the PF Roller or when moving the
CR Unit. There is a risk to damage the Main Board if the Head FFC is short-circuited with the capacitors on
the Main Board electrically charged, therefore, after the power turns off or after motors are driven, leave the
printer untouched for approximately 30 seconds to discharge the capacitors before starting disassembly /
reassembly.
6. To prevent the circuit boards from short-circuiting, be careful about the following when handling FFC or
cables.
When handling FFC, take care not to let the terminal section of FFC touch metal parts.
When connecting cables/FFC to the connectors on circuit boards, connect them straight to the connectors to avoid
slant insertion.
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7. In order to protect sensitive microprocessors and circuitry, use static discharge equipment, such as anti-static
wrist straps, when accessing internal components.
8. Do not tilt this product immediately after initial ink charge, especially after performing the ink charge several
times. Doing so may cause ink to leak from the product because it may take some time for the waste ink pads
to completely absorb ink wasted due to the ink charge.
9. Never touch the ink or wasted ink with bare hands. If ink comes into contact with your skin, wash it off with
soap and water immediately. If you have a skin irritation, consult a doctor immediately.
10. When disassembling or assembling this product, make sure to wear gloves to avoid injuries from metal parts
with sharp edges.
11. Use only recommended tools for disassembling, assembling or adjusting the printer.
12. Observe the specified torque when tightening screws.
13. Be extremely careful not to scratch or contaminate the following parts.
Nozzle plate of the printhead
CR Scale
PF Scale
ASF Scale
Coated surface of the PF Roller
Gears
Rollers
LCD
Scanner Sensor
Exterior parts
14. 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.
15. Apply the specified amount of grease described in this manua l .
16. Make the specified adjustments when you disassemble the printer.
17. When cleaning this product, follow the procedure described in this manual.
18. When transporting this product after filling the ink in the printhead, pack the printer without removing the
ink cartridges in order to prevent the printhead from drying out.
19. Make sure to install antivirus software in the computers used for the service support activities.
20. Keep the virus pattern file of antivirus software up-to-date.
21. When disassembling/reassembling this product, if you find adhesive power of the double-sided tape which
secure the parts or FFC is not enough, replace the tape with new one and attach it correctly to the specified
points where the parts or FFC should be secured.
22. Unless otherwise specified in this manual, the labels attached on the returned product should be transferred to
the corresponding attachment positions on the new one referring to the labels on the returned product.
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About This Manual
This manual, consists of the following chapters, is intended for repair service personnel and includes information
necessary for properly performing maintenance and servicing the product.
CHAPTER 1. PRODUCT DESCRIPTIONS
Provides a general overview and specifications of the product.
CHAPTER 2. OPERATING PRINCIPLES
Describes the theory of mechanical operations of the product.
CHAPTER 3. TROUBLESHOOTING
Describes the step-by-step procedures for the troubleshooting.
CHAPTER 4. DISASSEMBLY / REASSEMBLY
Describes the disassembly/reassembly procedures for main parts/units of the product.
CHAPTER 5. ADJUSTMENT
Describes the required adjustments for servicing the product.
CHAPTER 6. MAINTENANCE
Describes maintenance items and procedures for servicing the product.
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. Pay attention to all symbols when they are
used, and always read explanation thoroughly and follow the instructions.
Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed,
could result in serious injury or loss of life.
Indicates an operating or maintenance procedure, practice, or condition that, if not strictly observed,
could result in bodily injury, damage or malfunction of equipment.
May indicate an operating or maintenance procedure, practice or condition that is necessary to
accomplish a task efficiently. It may also provide additional information that is related to a specific
subject, or comment on the results achieved through a previous action.
For Chapter 4 “Disassembly/Reassembly”, symbols other than indicated above are used to show additional
information for disassembly/reassembly. For the details on those symbols, see "4.2 Disassembly/Reassembly
Procedures (p54)".
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Revision Status
RevisionDate of IssueDescription
AJuly 25, 2012First Release
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Epson WP-M4595/4525/4521/4095/4015/4011Revision A
Contents
Chapter 1 Product description
1.1 Features ................................................................................................................................................................... 10
1.4 Control Panel........................................................................................................................................................... 14
1.4.1 O peration Buttons & LEDs ............................................................................................................................ 14
1.4.2 LEDs and LCD Indications ............................................................................................................................ 16
1.5 Various Settings ............................................................................................................ .......................................... 21
1.5.1.3 Forced Power OFF................................................................................................................................. 23
1.5.1.4 Printer Status Sheet................................................................................................................................ 23
Chapter 2 Operating Principles
2.1 O verview ................................................................................................................................................................. 25
4.1 O verview ................................................................................................................................................................. 53
4.2.3.1 Parts/Units whose Configuration is Different between Models in the Flowchart ................................. 56
4.2.3.2 Exterior Parts ......................................................................................................................................... 58
5.2 D etails of Adjustments ............................................................................................................................................ 83
5.2.1 PF Timing Belt Tension Check ...................................................................................................................... 83
5.2.2 Rear ASF Timing Belt Tension Check........................................................................................................... 84
5.2.4 Checking the Platen Gap ................................................................................................................................ 91
5.2.5 MAC Address Setting............................................................................... ...................................................... 92
6.1 O verview ................................................................................................................................................................. 97
6.2 Lubrication Points and Instructions......................................................................................... ................................ 98
8
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CHAPTER 1
PRODUCT DESCRIPTION
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Epson WP-M4595/4525/4521/4095/4015/4011Revision A
1.1 Features
In this manual, the product name is abbreviated to such as “WP-4510 series”, however, the
last digit of the actual name may differ. Identify your product with the first three digits and
refer to the appropriate sections in this manual.
WP-M4595/4525/4521/4095/4015/4011 are mono inkjet printers made based on WP-4540/4530/4520/4510/
4020/4010 series. The main features are as follows.
Scanner typeFlatbed, color
Scanning methodMoving carriage, stationary document
Home positionThe rear left corner
Photoelectric deviceCIS
Light sourceLED
Maximum document sizesA4 or US Letter
Scanning range8.5” x 11.7” (216 mm x 297 mm)
Maximum resolutionMain scan: 1,200 dpi
Sub scan: 2,400 dpi
Maximum effective pixels10,200 x 14,040 pixels (1200 dpi)
Pixel depthColor48 bit per pixel (input) and 24 bit per pixel (output)
Monochrome16 bit per pixel (input) and 1 bit or 8 bit per pixel (output)
Table 1-5. ADF Speci fications (WP-4540/4530/4520 series only)
ItemSpecification
Document loadingFace-up
Maximum document sizesA4, US Letter or Legal
Supported paper typePlain paper only
Paper thickness64 to 95 g/m
Maximum number of documents which can be set30 sheets or 3 mm at maximum (A4, US Letter) / 10 sheets (Legal)
Document pathFeeds from upper tray and ejects to lower tray
Document set positionRear
Network status sheetPrints a network status sheet.
• Loads or ejects paper.
• Resumes printing after a paper out error, multiple page feed error.
• Lights when the printer is on.
• Flashes when the printer is in process.
LED
Paper feed/eject
Head cleaning (monochrome)Starts head cleaning (black only).
Printer Status sheetPrints a printer status sheet.
CancelCancels printing during a print job.
Power
NetworkIndicates the network connection status.
Maintenance boxIndicates error status for maintenance box.
PaperIndicates error status for paper.
*
Ink
Note :See "1.4.2 LEDs and LCD Indications (p16)" for more details about the LEDs.
Indicates error status for ink.
Product descriptionControl Panel15
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Epson WP-M4595/4525/4521/4095/4015/4011Revision A
1.4.2 LEDs and LCD Indications
Table 1-8. LEDs and LCD Indications
WP-M4095/4015/4011WP-M4595/4525/4521
Status
O
p
PCL Recovery error
*2
e
r
a
t
i
n
g
Printer fatal error
Scanner fatal error
ADF fatal error
Fax error
*1
*1
*1
Maintenance box fullFlash
Maintenance box
CSIC error
No maintenance box
error
Paper jam error
Paper jam error (front
cover open)
*5
*5
Paper out errorFlash
LED Status
PowerEthernet
Flash at
high
speed
Flash at
high
speed
Flash at
high
speed
Flash at
high
speed
Mainten
ance
Flash at
high
speed
Flash at
high
speed
paperInk 1Ink 2Ink 3Ink 4
Flash at
high
speed
Flash at
high
speed
Flash at
high
speed
Flash at
high
speed
Flash at
high
speed
Flash at
high
speed
Flash at
high
speed
Flash at
high
speed
------------------------
-------------------------
------------------------
Flash
Flash
Flash
Flash
*3
*3
*3
*3
*3
*3
---ON ---------------
---ON---------------
---ON---------------
------Flash------------
------Flash------------
------ON------------
Flash at
high
speed
Flash at
high
speed
LCD Message
TBD
Printer error. Turn power off
and then on again. For
details, see your
documentation or visit
Epson.com.
Paper jam inside, in back, or
in ADF. Press [OK] to see to
see how to remove jammed
paper.
Remove while and orange
transportation locks by
following instructions.
Scanner error. Turn power off
and then on again. If the error
is not fixed, visit Epson.com
for technical support.
Automatic Document Feeder
(ADF) error.
Fax error. Turn power off and
then on again.
Maintenance box is at the
end of its service life. You
need to replace it.
<Maintenance Box>
XXXXX
*4
Cannot recognize
maintenance box. Install it
correctly.
<Maintenance Box>
XXXXX
*4
Cannot recognize
maintenance box. Install it
correctly.
<Maintenance Box>
XXXXX
*4
Paper jam. Press OK to see
how to remove jammed
paper.
Paper jam. Press OK to see
how to remove jammed
paper.
Paper out or paper jam.
Check paper size and load
paper in paper cassette
Ink cartridge is not
recognized. Please replace
the cartridge.
<Ink Cartridges> XXX
Note :--No change
Flash:turns on and off at intervals of 1.25 seconds.
Flash 2: On for 0.5 sec., Off for 0.5 sec., On for 0.5 sec. and Off for 1.0 sec.
Flash at high speed: turns on and off at intervals of 0.5 seconds.
Simultaneous Flash:same as “Flash”
Alternate flash 1:same as “Flash”
Alternate flash 2: turns on and off at intervals of 1.25 seconds.
Note *1: WP-M4595/4525/4521 only.
*2: WP-M4595/4095 only.
*3: Flashes if the status arises when printing starts or when the printer starts up, but lights if the status arises when printing is complete.
*4: The corresponding maintenance box, ink cartridge product number or cassette number is indicated.
*5: Occurs in any paper path.
*6: The corresponding ink LED flashes after the ink falls in the ink low status, and lights when it reaches the ink end status.
LCD Message
*4
*4
*4
Product descriptionControl Panel20
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Epson WP-M4595/4525/4521/4095/4015/4011Revision A
1.5 Various Settings
1.5.1 Panel Operation
1.5.1.1 Setup Menu Configuration (WP-M4595/4525/4521 only)
The following explains the setup menu structure and the outline of the menu functions.
Table 1-9. Menu Configuration
MenuDescription
SetupInk Levels---Displays the status of ink cartridges and maintenance box.
MaintenanceNozzle CheckPrints a nozzle check pattern.
Head CleaningRuns a print head cleaning.
Head AlignmentAdjusts the alignment of the printhead.
*
Printer SetupPaper Size LoadedSelects the paper size (1st cassette/2nd cassette
Thick PaperTurn this on when printing on thick paper.
Dry TimeSets the dry time when duplex printing.
SoundTurns the sound on/off.
Date/TimeSelects display format for data/time.
Daylight Saving TimeSelects daylight saving time.
Country/RegionSelects country/region.
LanguageSelects the language displayed on the LCD.
Paper Size NoticeChecks the paper size and selects whether to alert users when an
Print Status Sheet---Prints a printer status sheet.
Lock SettingsOn
Restore Default
Settings
Network Setup
Network Connection Check• Checks the network connection status.
Network Settings• Displays the network information.
Network
Receive SettingsConfigures fax receive settings.
CommunicationConfigures the details of the fax communication.
Check Fax ConnectionPrints the fax connection settings.
(“Off” when panel operation
is locked)
Change PasswordChanges the password. (See "1.5.1.2 Panel Operation Lock
Fax Send/Receive SettingsInitializes the fax send/receive settings.
Fax Data SettingsDeletes the fax data settings.
Network SettingInitializes the network settings.
All except Network & Fax
Settings
All SettingsInitiali ze s the all settings.
Configures the connection setting for networkl setup.
• Prints the connection check result.
• Prints a network status sheet.
Sets the access priority when accessing the storage dev ice
connected to the USB host port to USB or Network.
Changes the setting of the panel operation lock. (See "1.5.1.2
For WP-M4595/4525/4521, the panel operation for the following can be locked after setting the password.
The same password is also required when configuring the printer settings through
EPSON NetConfig.
All settings will be initialized when resetting the password.
Table 1-10. Panel Operation Lock Setting
ONThe password is required for the following settings.
• Lock settings
• Printer setup
• Network settings
• File sharing setup
• Restoration of individual settings such as network setting (except initializing the all settings)
OFFEntering the password is not required to go to the setting screen even the password is registered.
Password setting method
1. Select “Setup” - “Lock Settings” - “On”, and then press “OK”.
2. Enter the password, and then press “OK”.
3. To verify the password, enter the password again and press “OK”.
Table 1-11. Password Setting
Item
WP-4540 seriesWP-4530/4520/4510 series
Digit of the passwordWithin 1 to 20
Available charactersSpace, !”#$%&'()*+,-./, 0-9, ;<=>?@ A-Z, \]^_`, a-z, {|}~
MethodSelect characters with arrows or ten key. When a
password is already set, the following three
password entries are required: “Enter Current
Password”, “Enter New Password”, and “Verify
New Password”.
Note 1: The password is not set when shipping from the factory.
2: If the entr ies “Enter New Password” a nd “Verify Ne w Password” are diffe rent, the message “Passw ord is in correct. Enter cor rect
password.” is displayed and the menu screen returns to the password entering screen.
3: If the entries up t o “Verify New Password” are com plete successfully, the change will be reflecte d and the LCD display returns to
the setup menu.
4: The password is stored on the EEPROM, and kept even the power is off.
Description
Select characters with the arrow buttons. When a
password is already set, the following three
password entries are required: “Enter Current
Password”, “Enter New Password”, and “Verify
New Password”.
Panel operation lock method
1. Select “Setup” - “Lock Settings” - “On”, and then press “OK”.
2. Enter the password, and then press “OK”.
3. When “Free access limited” displays, press “OK”. Then the panel lock setting becomes valid.
Product descriptionVarious Settings22
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Epson WP-M4595/4525/4521/4095/4015/4011Revision A
Resetting the password/unlocking the panel operation lock
If you need to reset the password or unlock the panel operation because of forgetting the password and such,
follow the steps below to reset them.
2. When “Restore all settings to defaults” displays, select “Yes”.
Settings after reset
• Password:Not set
• Panel operation lock:OFF
1.5.1.3 Forced Power OFF
For WP-M4595/4525/4521/4095/4015/4011, the power can be turned off forcibly by the following panel
operation. If the power is turned off forcibly, the same process of the normal power-off is executed.
Operation method
1. Press the power button and then stop button, and hold down the buttons for seven seconds or more.
2. When the LCD display changes, release the buttons.
1.5.1.4 Printer Status Sheet
WP-M4595/4525/4521/4095/4015/4011 print the printer status sheet by the following operation.
Table 1-12. Status Sheet
ModelProcedure
WP-M4595/4525/45211. Press the setup button.
2. Select “Print Status Sheet” from the setup menu.
3. Press the start button.
WP-M4095/4015/4011Turn the power on while pressing the paper feed/eject button.
Note : When printing the network status sheet to check the network information, follow the procedure below.
WP-M4595/4525/4521:Select “/Network Settings” - “Confirm Network Settings”, and press or
WP-M4095/4015/4011:Press the “network status sheet” button. (See
(
(
. (See "1.5.1.1 Setup Menu Configuration (WP-M4595/4525/4521 only) (p21)".)
"1.4.1 Operation Buttons & LEDs (p14)"
(
(
.)
Product descriptionVarious Settings23
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CHAPTER 2
OPERATING PRINCIPLES
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Epson WP-M4595/4525/4521/4095/4015/4011Revision A
A#3
A#2
A#1
A#152
A#151
A#150
B#152
B#151
B#150
B#3
B#2
B#1
C#3
C#2
C#1
C#152
C#151
C#150
D#152
D#151
D#150
D#3
D#2
D#1
E#3
E#2
E#1
E#152
E#151
E#150
F#152
F#151
F#150
F#3
F#2
F#1
G#3
G#2
G#1
G#152
G#151
G#150
0.169 mm
1/150 inch)
5.9267 mm
(35/150 inch
)
2.3707 mm
(14/150 inch)
)
0.0423 mm
1/600 inch)
)
0.0847 mm
1/300 inch)
)
BlackCyanMagenta
Yellow
Column A
Carriage movement direction
Paper feed direction
Column B
Column C
Column D
Column E
Column FColumn G
2.1 Overview
This chapter describes the operating principles of WP-M4595/4525/4521/4095/4015/4011 printer
mechanism.
2.2 Printhead
This section describes the printhead.
Print method:On-demand inkjet
(F7-Mach Turbo 2)
Nozzle configuration
ColorBk, C, M, Y (4 colors)
Number of nozzles1064 nozzles (Bk: 152 nozzles x 4, C, M, Y: 152 nozzles per color)
Nozzle pitch0.169 mm (1/150 inch)
The nozzle layout as seen from behind the Printhead is shown below.
Operating PrinciplesOverview25
Figure 2-1. Nozzle Layout
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Epson WP-M4595/4525/4521/4095/4015/4011Revision A
A
Printhead
1
2
4
3
5
6
C
B
2.3 Motors and Sensors
The following table lists the motors and sensors of WP-M4595/4525/4521/4095/4015/4011.
Printer Mechanism
Table 2-1. List of Motors & Sensors (Printer Mechanism)
MechanismMotor or SensorNo.
Printhead--Carriage mechanismCR MotorA
CR Encoder1
PW Sensor2
Cover Open Sensor3
Ink supply mechanismDecompress Pump MotorB
Paper loading/feed mechanismPF MotorC
PF Encoder4
PE Sensor5
Paper Stopper Lever Sensor6
Figure 2-2. Motors & Sensors (Printer Mechanism)
Operating PrinciplesMotors and Sensors26
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Epson WP-M4595/4525/4521/4095/4015/4011Revision A
1
A
A
1
2
3
Scanner (WP-M4595/4525/4521 only)
Table 2-2. List of Motors & Sensors (Scanner)
MechanismMotor or SensorNo.
Scanner mechanismScanner MotorA
CIS Unit1
Figure 2-3. Motors & Sensors (Scanner)
ADF (WP-M4595/4525/4521 only)
Table 2-3. List of Motors & Sensors (ADF)
MechanismMotor or SensorNo.
ADF mechanismADF MotorA
PE Sensor1
Document Sensor2
ADF Encoder3
Figure 2-4. Motors & Sensors (ADF)
Operating PrinciplesMotors and Sensors27
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Epson WP-M4595/4525/4521/4095/4015/4011Revision A
A
1
2
Option(2nd Cassette)
Table 2-4. List of Motors & Sensors (2nd Cassette)
MechanismMotor or SensorNo.
2nd cassetteASF MotorA
Paper Stopper Lever Sensor1
ASF Encoder2
Figure 2-5. Motors & Sensors (2nd Cassette)
Operating PrinciplesMotors and Sensors28
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Epson WP-M4595/4525/4521/4095/4015/4011Revision A
PF MotorPF Timing Belt
Left side of Printer Mechanism
PF Encoder
With cover
Without cover (light-emitting
and receiving devices)
PF Encoder
Light passes
Light does not pass
PF Scale
2.4 Optical Sensor Control
WP-M4595/4525/4521/4095/4015/4011 uses the optical sensor to control itself. The following describes the
operating principles of optical sensor control.
Control method
To ensure accurate printing, each part must be controlled to make an adequate amount (time) of movement. The
optical sensors read the amount (time) of movements as follows to printer to control it for achieving accurate printing.
1. Rotates the motors for control of the printer, and transmits drive force to the each part via the gear or the
timing belt.
2. The encoder reads the drive amount of each part from the scale one by one to printer to monitor that the part
drives for an adequate amount (time).
Controlled parts
The following table lists where the optical sensor control is used.
Table 2-5. Controlled Parts
ItemMotorScaleEncoderTransmission method
Paper feed/load mechanism
PF MotorPF ScalePF Encoder
Front ASF mechanism
(1st cassette)
Rear ASF mechanism
Carriage mechanismCR MotorCR ScaleCR EncoderCR Timing Belt
Front ASF mechanism
(2nd cassette
ADF mechanism
Note *1: Option
*1
)
*2
*2: WP-M4595/4525/4521 only.
ASF MotorASF ScaleASF EncoderGear
ADF MotorADF ScaleADF EncoderGear
Operating principles
The following describes the paper feed mechanism drive control as an example of the actual operation for the
optical sensor.
The PF scale consists of light-passing and light-blocking portions on its surface, and runs through the slit between
the encoder’s light-emitting and light-receiving devices. While the printer is operating, the encoder always emits
light from light-emitting device toward the light-receiving device, and the ligh t-receiving dev ice detects light when
the light is transmitted through the light-passing portion of the scale, and does not detect light when the light is
blocked by the light-blocking portion of the scale. Accord ing to the counts of light-detected and non detected times,
the printer controls paper feed drive direction and amount.
When the encoder cannot read light-emitting/blocking counts correctly due to the misalignment, broken or
contaminated scale, paper jam, foreign object and increasing a load, the fatal error occurs and the printer stops.
PF Timing Belt
ASF Timing Belt
Figure 2-6. PF Drive Control Section
Operating PrinciplesOptical Sensor Control29
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Epson WP-M4595/4525/4521/4095/4015/4011Revision A
Ink Supply Unit
(Ink Cartridge Holder - Ink Supply Tube)
Printhead
Ink Supply TubeInk Cartridge Holder
Buffer
Diaphragm Pump
Decompress Pump Unit
2.5 Ink Supply Mechanism
The following shows configurations of the ink supply mechanism.
The ink supply mechanism consists of the Decompress Pump Unit and the Ink Supply Unit composed of the Ink
Supply Tube, Diaphragm Pump, Buffer and Ink Cartridge Holder.
As the Decompress Pump Unit reduces the pressure inside the Diaphragm Pump, the Diaphragm Pump can suck
the ink inside the Ink Cartridge, and then the sucked ink is supplied to the Printhead through the Buffer and Ink
Supply Tube.
Figure 2-7. Ink Supply Mechanism
Operating PrinciplesInk Supply Mechanism30
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