Epson Stylus Photo R800 Service Manual
SERVICE MANUAL
Color Inkjet Printer
EPSON Stylus Photo R800
SEIJ03012
PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment.
DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing
procedures preceded by DANGER Headings.
WARNING Signals a precaution which, if ignored, could result in damage to equipment.
The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.
DANGER
1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR
PROCEDURES.
2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL
ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.
3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO
DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER
ELECTRONIC COMPONENTS.
WARNING
1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.
2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE
EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.
3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING
PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.
4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST
STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.
5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE
ICs OR OTHER NON-APPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.
About This Manual
This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. The instructions and
procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page.
Manual Configuration
This manual consists of six chapters and Appendix.
CHAPTER 1.PRODUCT DESCRIPTIONS
Provides a general overview and specifications of the product.
CHAPTER 2.OPERATING PRINCIPLES
Describes the theory of electrical and mechanical operations of
the product.
CHAPTER 3.TROUBLESHOOTING
Describes the step-by-step procedures for the troubleshooting.
CHAPTER 4.DISASSEMBLY / ASSEMBLY
Describes the step-by-step procedures for disassembling and
assembling the product.
CHAPTER 5.ADJUSTMENT
Provides Epson-approved methods for adjustment.
CHAPTER 6.MAINTENANCE
Provides preventive maintenance procedures and the lists of
Epson-approved lubricants and adhesives required for servicing
the product.
APPENDIX Provides the following additional information for reference:
• Connector pin assignments
• Exploded diagram & Parts List
• Electric circuit boards components layout
• Electrical circuit boards schematics
Symbols Used in this Manual
Various symbols are used throughout this manual either to provide ad ditional
information on a specific topic or to warn of possible danger present during a
procedure or an action. Be aware of all symbols when they are used, and
always read NOTE, CAUTION, or WARNING messages.
Indicates an operating or maintenance procedure, practice or
condition that is necessary to keep the product’s quality.
Indicates an operating or maintenance procedure, practice, or
condition that, if not strictly observed, could result in damage to,
or destruction of, equipment.
May indicate an operating or maintenance procedure, prac tice 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.
Indicates an operating or maintenance procedure, practice or
condition that, if not strictly observed, could result in injury or loss
of life.
Indicates that a parti cu la r ta sk mu st be ca rr i ed o ut ac co rd ing to a
certain standard after disassembly and before re-assembly,
otherwise the quality of the components in question may be
adversely affected.
Revision Status
Revision Date of Issue Description
A December 16, 2003 First Release
B May 27, 2004 Correction of the misspellings
CONTENTS
Chapter 1 PRODUCT DESCRIPTION
1.1 Overview.......................... ... ... .......................................... .... ... ... ... ........... 9
1.2 PG Setting ....................................... .......................................... ... ......... 10
1.3 Functions ........ ... ... .... ... ... ... ... .... ... .......................................... ... ... .... ... .. 11
1.3.1 Control Panel ............. ... .... ... ... ... .... ... .......................................... .. 11
1.3.2 Switches ............................ ... ... ... .......................................... .... ..... 11
1.3.3 Indicators ........................................................... ... ......................... 11
1.3.4 Switch Functions ............................................................... ... .... ... .. 11
1.3.5 Indicator Display in Normal Mode ................................................. 12
1.3.6 Error Status ....... ... ... ... ... .......................................... .... ... ... ... .... ... .. 13
1.4 Casing Specifications .................................... .... ... ... ... ... .... ... ... ... .... ... .. 14
1.5 Accessories .............. ............................................................................ 14
Chapter 2 OPERATING PRINCIPLES
2.1 Overview.......................... ... ... .......................................... .... ... ... ... ......... 16
2.2 Printer Mechanism ............... .......................................... .... ... ............... 16
2.2.1 Carriage Mechanism .. ... .... ... ... ... .... .......................................... ... .. 17
2.2.2 Printhead Specifications ....................... ... .... ... ... ... ... .... ... ... ... ......... 20
2.2.3 Paper Feeding Mechanism ........................................................... 20
2.2.4 Paper Loading Mechanism ........................................................... 24
2.2.5 Ink System Mechanism ................................................................. 26
2.2.6 Ink Sequence .......................................... .... ... ... ... ... .... ... ... ............ 28
2.2.7 Paper Cutter Mechanism .............................................................. 30
2.2.8 Power-On Sequence ..................................................................... 32
2.3 Electrical Circuitry Operating Principles................................ ....... ... .. 33
2.3.1 Power Supply Circuit Operating Principle ..................................... 33
2.3.2 C550 MAIN Circuit Operating Principle .................................... ... .. 34
3.1 Overview ............................................................................................... 38
3.1.1 Troubleshooting according to panel messages ............................ 38
3.1.2 Superficial Phenomenon-Based Troubleshooting ......................... 62
Chapter 4 DISASSEMBLY & ASSEMBLY
4.1 Overview ............................................................................................... 73
4.1.1 Precautions ................................................................................... 73
4.1.2 Tools to Be Used ............... .... ... ... ... ... .... ... ... ... .... ... ... ... ... .... ... ... ... . 74
4.1.3 Screw List ..................................................................................... 75
4.1.4 Pre-Shipment Checks ................................................................... 76
4.2 Disassembly ......................................................................................... 77
4.2.1 Removing the Housings ................................................................ 78
4.2.2 Stacker Assy. ................................................................................ 82
4.2.3 Waste Ink Pads ............................................................................. 84
4.2.4 ASF Assy. ..................................................................................... 86
4.2.5 Removing the Boards ................................................................... 90
4.2.6 Disassembling the Printer Mechanism .......................................... 96
4.2.7 Removing the Motors .................................................................. 130
4.2.8 Removing the Sensors ................................................................ 133
Chapter 5 ADJUSTMENT
5.1 Adjustment Items and Overview....................................................... 140
5.1.1 Servicing Adjustment Item List .................................................... 140
5.1.2 Replacement Part-Based Adjustment Priorities .......................... 143
5.1.3 Required Adjustment Jigs, Tools and Like .................................. 145
5.2 Adjustments........................................................................................ 145
5.2.1 PF Belt Tension Adjustment ....................................................... 145
5.2.2 PG Adjustment ............................................................................ 147
Chapter 3 TROUBLESHOOTING
Chapter 6 MAINTENANCE
6.1 Overview.......................... ... ... .... ... .......................................... ... ... .... ... 153
6.1.1 ROM Replacement ..................... .... ... ... ... .... ... ... ... ... .... ... ... .......... 153
6.1.2 Cleaning .. ... ... .... .......................................... ... ... ... ... .................... 153
6.1.3 Service Maintenance ................................................................... 154
6.1.4 Lubrication ......................... ... ... .......................................... ... .... ... 155
Chapter 7 APPENDIX
7.1 Connector Summary .......................................................................... 162
7.1.1 Connectors and Pin Layouts ....................................................... 162
7.2 Exploded Diagram........................................................................... ... 163
7.3 Parts List for EPSON Stylus Photo R800 ......................................... 170
7.4 Component Layout............................................................................. 172
7.5 Circuit Diagram............................... .......................................... ... .... ... 174
PRODUCT DESCRIPTION
CHAPTER
1
EPSON Stylus Photo R800 Revision A
1.1 Overview
The Stylus Photo R800 is a photo printer designed for a wide range of users
from individual users to commercial users. As a successor to the Stylus Photo
950/960, this consumer middle high model is capable of CD-R/DVD-R printing
and roll paper cutter functions.
This product has the following features.
FEATURES
High Color Print Quality
High photo quality thanks to Photo Mach technology
Achievement of higher quality using microweaves and super
microweaves
High resolution printing of 5760 x 1440dpi, world's minimum dot 1.5pl
MSDT
High-speed printing
Two Different Interfaces Supported
USB 2.0 (HS compatibility)
IEEE-1394
Compact, space saving
Windows/Macintosh Exclusive
Multi-size Capable ASF
ASF equipped as standard supports forms ranging from business cards to
A4.
CSIC-compatible Independent Ink Cartridge
Roll paper compatibility
Note"*1": When user performs the "Auto nozzle check and cleaning", Prints
nozzle check pattern and automatically checks print head nozzles. If they are
clogged, performs head cleaning. If they are not recovered, and perfor ms head
cleaning and detection up to tree times.
Figure 1-1. Product Appearance
Fast, 4-side borderless printing compatibility
Two-sided printing compatibility
Prevention of platen printing by optical sensor
CD-R/DVD-R printing compatibility by front loading
Business card, card photo printing compatibility
Auto Nozzle Check and Cleaning*1
PRODUCT DESCRIPTION Overview 9
EPSON Stylus Photo R800 Revision A
1.2 PG Setting
As this printer uses an Auto PG (APG), an appropriate PG position is set according to the used paper type.
The following table indicates the PG positions, the main applications of each position, and the relationships between the two sensors used with the APG.
Table 1-1.
Application
Printing • Special thick paper • Plain paper
Non-printing
PG value 1.2mm 1.7mm 2.1mm 4.5mm –
Sensor PG (-) PG (Typ.) PG (+) PG (++) Release
APG Sensor 1 OFF OFF OFF OFF OFF
APG Sensor 2 ON ON ON OFF OFF
PG (-) PG (0) PG (+) PG (++) Release
• Special thin paper
• PG(-) rub avoidance
• Standby position
–
after power-on (For
bottom stacker)
PG Position
• Envelope
• PG(0) rub avoidance
–
• CD-R/Board paper
• Initialization at
power-on
• Cleaning (wiping)
–
• Waiting for CD-R/
Board paper to be
fed
• Paper jam removal
PRODUCT DESCRIPTION PG Setting 10
EPSON Stylus Photo R800 Revision A
1.3 Functions
1.3.1 Control Panel
The appearance of the control panel is shown below.
Ink LED Paper LED
Ink switch
Roll paper switch
Figure 1-2. Control Panel Appearance
1.3.2 Switches
Paper switch
Power LED
Power switch
1.3.4 Switch Functions
FUNCTIONS IN NORMAL STATUS
Table 1-2. Normal-status Functions
Switch Function
Power switch • Power On/Off
Paper switch
Ink switch
Roll paper
switch
Note : When the prin ter has frozen, hold down the Power switch and Ink switch for 7
seconds to forcibly switch power off.
• Loads or Ejects the Paper.
• In the condition of printing, cancel the print job.
• Starts the Cleaning of head with 3 second pushing.
• Moves the Carriage to ink cartridge change position.
• When Carriage is on the ink cartridge change position, return
carriage from ink cartridge change position.
• Loads the Roll paper.
• Back out the roll paper with 3 second pushing.
• Move to tear off position / Return from tear off position.
• When the cutter is set, cuts the paper.
• When the photo album is used, ejects the paper forwards only.
(At this mode, the printer can't move the cutter and can't move
backwards.)
Power switch
Paper switch
FUNCTION AT POWER-ON
Ink switch
Roll paper switch
1.3.3 Indicators
Power LED : Green
Switch Function
Paper switch Starts status printings.*
Note "*1 ": Status printings prints firmware version, ink counter and nozzle check
patterns.
Table 1-3. Power-on Function
1
Paper LED : Red
Ink LED : Red
PRODUCT DESCRIPTION Functions 11
EPSON Stylus Photo R800 Revision A
1.3.5 Indicator Display in Normal Mode
Table 1-4. Printer Condition and LED Status
Printer status Error status
Idle – On – – 20
Data Processing – Blink – – 19
Pause *
Ink Sequence Processing – Blink – – 17
Ink Cartridge Change Mode – Blink – – 16
PG Release Processing – Blink Blink Blink 15
Ink Low (warning) – – – Blink 14
Tear Off Status 11h – – – 13
Paper Mismatch Error 0Ch Fast Blink – 12
Paper Out 06h – On – 11
Ink Out 05h – – On 10
No Ink Cartridge or Ink Cartridge Error 05h – – On 9
Paper Jam Error 04h – Blink – 8
Card Loading Error 2Ah – Fast Blink – 7
Cutter Jam Error 1Dh –| Blink 2 – 6
Cover Open Error 02h – Blink 2 Fast Blink 5
Reset Input – On On On Å|
Fatal Error 00h Off Fast Blink Fast Blink 4
Cutter Position Error 1Ch Off Blink 2 Blink 2 3
Maintenance Request
Power Off – Fast Blink Off Off 1
1
Note: • "–" : Don't care
• Blink : 0.5sec on + 0.5sec off repetition
• Blink 2 : 0.2sec on + 0.2sec + 0.2sec on + 0.4sec off repetition
• Fast Blink : 0.1sec on + 0.1sec off repetition
• Blink alternately 1 : 0.5sec on + 0.5sec off repetition
• Blink alternately 2 : 0.5sec off + 0.5sec on repetition
Status 05h – – – 18
10h Off
Power Paper Ink Priority
Indicators
Blink
Alternately 1
Blink
Alternately 2
2
Note"*1": When the Photo album paper is end, the printer goes to this status.
PRODUCT DESCRIPTION Functions 12
EPSON Stylus Photo R800 Revision A
1.3.6 Error Status
If any of the following states is detected, this printer is put in an error status a nd
turns the interface signal -ERROR "Low" and BUSY "High" to inhibit data input.
At this time, the printer is automatically disabled from printing. However, when
communication is being made using the IEEE1284.4 protocol, communication
with the printer is enabled.
General error
After the cause of this type of error is removed, the printer can resume its
operation from where it stopped due to the error
Table 1-5. General error
Error Status Occurring Condition Resuming Condition
Paper Mismatch
Error
Paper Out When printer fails to load a sheet, it
Ink Out When the printer runs out the most
No Ink Cartridge/
CSIC Error
Paper Jam Error • Failure of ejecting a sheet
Card Loading
Error
If the paper path specified by the
print data is different from the
printer's real paper path, the printer
goes to this error.
goes Paper Out Error.
part of the ink of any one color, it
warns Ink Low and keeps printing.
When the printer runs out the whole
ink of any one color, it stops printing
and indicates Ink Out Error. User is
requested to install a new InkCartridge in this state.
When printer detects that Ink
Cartridge comes off, it goes this error
mode.
• Failure of loading a sheet to the
loading position
When the card was loaded to the
wrong position, the printer goes this
error.
Change the printer's
paper path to the one
specified by the data.
Set the paper to the ASF
and push the Paper
switch.
Install the new Ink
Cartridge.
Install the new Ink
Cartridge.
Remove the jammed
paper.
Set an A4 paper to the
ASF, and press the
Paper switch. If the card
couldn't eject at your first
try, repeat again the
same method.
Table 1-5. General error
Error Status Occurring Condition Resuming Condition
Cutter Jam Error When Cutter can't cut the paper, it
goes Cutter Jam Error.
Cover Open Error When the cover is opened at
Economy printing mode, the printer
goes this error.
Switch power off and
recheck the cutter state.
When a paper jam has
occurred, clear the
paper.
Close the cover.
Fatal error
After the cause of this type of error is removed, the printer cannot return to
normal unless it is powered off and then on again
Table 1-6. Fatal error
Error Status Occurring Condition Resuming Condition
Fatal Error When detecting a Fatal Error such as
a carriage control error, the printer is
placed in an error status.
Cutter Position
Error
Maintenance
Request
When Cutter can't return to cutter
home position, it goes Cutter Position
Error.
When the total quantity of ink wasted
through the cleaning and flushing is
reaches to the limit, printer indicates
this error and stops.
Turn off and turn on.
Switch power off and
recheck the cutter state.
When a paper jam has
occurred, clear the
paper.
Replace the Waste Ink
Pads in the printer
enclosure by a service
person.
PRODUCT DESCRIPTION Functions 13
EPSON Stylus Photo R800 Revision A
1.4 Casing Specifications
EXTERNAL DIMENSIONS
When tucked : 495 (width) x 305 (depth) x 193 mm (height)
When used : 495 (width) x 644 (depth) x 322 mm (height)
WEIGHT
7.0kg
EXTERNAL DIMENSION DIAGRAM
322
193
305
644
495
1.5 Accessories
STANDARD ACCESSORIES
Setup guide : 1 set
Ink Cartridge (one for each of 8 colors) : 1 set
CD-ROM (Printer driver utility) : 1 set
CD/DVD tray : 1 set
CD/DVD print position check sheet : 1 set
8cm CD/DVD attachment : 1 set
Roll paper holder : 1 set
Power cord : 1 set
CONSUMABLES AND OPTIONS
Ink cartridges
Gloss Optimizer: T0540
Black : T0541
Cy an : T0542
Magenta : T0543
Yellow : T0544
Red : T0547
Matte Black : T0548
Blue : T0549
Roll paper auto cutter
(Cutter, paper support basket, instruction manual) : PMA4RAC3
USB cable : USBCB2
Figure 1-3. External Dimension Diagram
PRODUCT DESCRIPTION Casing Specifications 14
OPERATING PRINCIPLES
CHAPTER
2
EPSON Stylus Photo R800 Revision A
2.1 Overview
This chapter explains the operating princ i ple s of th e mech an ica l sect ion s an d
electrical circuits in this product. The main components of this product are as
follows.
Control circuit board : C550 MAIN
Power supply circuit board : C550 PSB/PSE
Control panel board : C550 PNL
2.2 Printer Mechanism
Like the conventional model, this product uses DC motors as power sources.
The following table describes the motor types and their applications.
Table 2-1. Various Motors
Motor Name Type Applications/Functions
Used for carriage driving. Makes little noise
during driving. The CR linear scale and CR
encoder sensor are used to control the motor.
Power source to drive the Paper loading rollers
at the time of fixed-value paper loading or paper
feed/eject operation. To grasp the paper feed
pitch, the precision gear surface is fitted with the
PF scale and the PF encoder sensor is used to
control the motor.
Power source to drive the Carriage Unit at the
time of PG setting. The two APG Sensors and
Carriage Shaft are driven vertically to control the
motor.
Performs the paper feed operation of the ASF.
Because of a stepping motor, this motor does
not require a scale, photo sensor and like to be
fitted to grasp the driving conditions.
Drives the pump, wiper, etc. of the Ink System.
Because of a stepping motor, this motor does
not require a scale, photo sensor and like to be
fitted to grasp the driving conditions.
CR Motor
PF Motor
APG Motor
ASF Motor
Pump Motor
DC motor with
brushes
DC motor with
brushes
DC motor with
brushes
4-phase, 48-pole
PM type
stepping motor
4-phase, 48-pole
PM type
stepping motor
The basic structure of the mechanism has the following features.
The se nsor dedicated to Auto Bi-D adjustment and auto nozzle check is
installed.
The following shows the outline of the printer mechanism.
PF Encoder
Sensor
Paper Eject
Roller (front)
PG Release
Sensor
Paper Eject
Roller (rear)
PF Roller
PW Sensor
Ink Mark
Sensor
Carriage
Unit
CR Scale
Ink System
Unit
Pump Motor
Carriage
Shaft
PF Scale
APG Sensors
PF Motor
APG Motor
Timing Belt
CR Encoder
Sensor
LD Roller
Retard
Roller
PE Sensor
ASF Motor
CR Motor
Figure 2-1. Printer Mechanism Outline
OPERATING PRINCIPLES Overview 16
EPSON Stylus Photo R800 Revision A
2.2.1 Carriage Mechanism
The Carriage mechanism consists of the Carriage Motor (CR Motor), Carriage
Shafts, Platen Gap Adjustment Mechanism, Carriage Lock Mechanism, and
others.
2.2.1.1 Carriage Mechanism
The following indicates the Carriage driving DC motor specifications.
Table 2-2. CR Motor Specifications
Item Specifications
Type DC motor with brushes
Drive voltage +42V ± 5% (voltage applied to driver)
Winding resistance 24.4Ω ± 15%
Inductance 17.5mH ± 25%
Drive method PWM, constant-current chopping
Drive IC A6615
Closed loop control based on the CR Motor (DC Motor) and CR Encoder
Sensor has advantages in stabilized print quality and silent operation.
Heat generation control
Using low-cost DC motors, this product grasps the variations of the torque
constants, coil resistances and power supply board output voltages of the
individual DC motors adequately to carry out heat generation control
according to individual differences.
CR variation measurement sequence
The variations of the torque constant, coil resistance and power supply
board output voltage of the motor are measured in a CR variation
measurement sequence when the CR mechanical load is in the initial
status and saved into the EEPROM (A6<H>). According to the variations
(individual differences) measured in this sequence, the voltage is corrected
to make the drive current value constant (without an individual difference)
according to the variations (individual differences) measured in this
sequence.
CR measurement sequence
To set the appropriate drive current value according to the variation of the
CR mechanical load, the mechanical load is measured in a CR
measurement sequence and saved into the EEPROM A4<H>, A5<H> in a
power-on or IC change sequence. However, if 46 is saved at the EEPROM
A4<H> and 05 at A5<H>, Fatal error will occur since too large load is
applied to the CR drive system.
The above control and sequences correct the drive current value of the CR
Motor according to not only the mechanical load but also the variations of the
motor and like. In addition, the resultant CR drive current value is used to
calculate a heating value, and when the specified heating value is reached,
wait time is provided per CR path for printing.
OPERATING PRINCIPLES Printer Mechanism 17
EPSON Stylus Photo R800 Revision A
2.2.1.2 Carriage Home Position Detection
As in the conventional model, the Carriage Home Position is detected using the
drive current of the CR Motor and the speed/position signal of the CR Linear
Encoder.
The basic home position detection sequence is as described below.
1. The CR linear encoder pulse counter in the CPU is reset by the
initialization operation performed at power-on.
2. When the CR Motor rotates counterclockwise, the Carriage Unit moves
from left to right. When the following conditions are satisfied, the CPU
assumes that the Carriage Unit made contact with the right frame.
The ASIC detects 862/1500 counts or more in the PWM output under
CR Motor load positioning control.
P1 (number of output pulses from when power is switched on until the
Carriage Unit makes contact with the right frame) is 12 steps or less.
3. When the CR Motor rotates clockwise, the Carriage Unit moves from right
to left. When the following conditions are satisfied, the CPU assumes that
the Carriage Unit reached the CR lock confirmation position.
The ASIC detects 483/1500 counts or more in the PWM output under
CR Motor load positioning control.
A difference between P1 and P2 (number of output pulses from when
the Carriage Unit made contact with the right frame until it reaches the
Carriage lock confirmation position) is 12 steps or less.
4. When the CR Motor rotates counterclockwise to move the Carriage from
left to right and the CPU detects 862/1500 counts or more in the PWM
output under CR Motor load positioning control, the printer judges it as
contact with the frame.
5. When a difference between P1 and P3 (number of output pulses from
when the Carriage Unit reached the Carriage lock confirmation position
until it makes contact with the right frame) is 4 steps or less, the printer
judges that the Carriage Unit is in the home position.
The IC14 (ASIC) sets the drive current value adequate for the Carriage Unit
motion and outputs it to the motor driver.
Based on the signal output from the IC14 (ASIC), the IC5 (Motor Driver)
outputs the CR Motor drive current to the CR Motor.
2.2.1.3 Sequence Used for PW Detection
The PW (paper width detection) Sensor installed on the Carria ge Unit bottom is
used to control the printer according to various sequences.
The following briefly describes the PW Sensor operating principle.
A dark voltage is measured by the PW Sensor in three places on the right end
plane (area without the absorber) of the Front Paper Guide every time power is
switched on, and the measurement values are saved into the EEPROM as
threshold values.
Threshold value > detection voltage: Paper present
Threshold value < detection voltage: Paper absent
The following sequences are performed .
Off-paper printing prevention control
Before start of printing (immediately after the end of paper locating), or
during printing, whether paper is present or not is detected to prevent offpaper printing on the Paper Guide by borderless printing used in a wrong
way. (This applies to only the left or right end of the paper.)
This control applies to only the four-side borderless mode.
CD-R center detection control
When printing is not being performed, the PW detector is used to detect
the center of CD-R. Refer to "2.2.3.4 CD-R Printing Mechanism (p.23)" for
details.
Board paper/roll paper leading edge detection control
Control exercised to detect the user-preset board paper leading edge, or
control carried out to detect the roll paper edge. Therefore, the PW sensor
does not detect a paper leading edge at the time of ASF cut sheet feeding.
OPERATING PRINCIPLES Printer Mechanism 18
EPSON Stylus Photo R800 Revision A
Off-range restriction control
At the time of frameless printing, a paper leading edge is detected using
the PW Sensor to restrict the frameless off-range am o un t.
Complete frameless mode
Control is performed to print the print data 3mm larger at top, 5mm
larger at bottom, and 2.5mm lager at left and right than the detected
paper size.
Roll paper mode
In the left and right frameless mode, control is performed to print the
print data 2.5mm lager at left and right than the detected paper size.
PW sensor dark voltage (VH) measurement
PW sensor dark voltage (VH) measurement is performed at the following
timings and locations and used to calculate the threshold value of whether
paper is present or not.
Cut sheets, Roll paper
The dark voltage is measured and updated at every power-on, and th e
threshold value (VS) is calculated and saved in the EPROM area as a
PW detection level.
• Threshold value > detection voltage: Paper present
• Threshold value < detection voltage: Paper absent
CD-R Tray
When a CD-R is used, the dark voltage is measured on the CD-R tray,
and the threshold value (VS) is then calculated and saved in the
EPROM area as a PW detection level.
• Threshold value > detection voltage: CD-R present
(tray home position detected)
The measurement voltage in the presence of the CD-R is saved into
the EEPROM as a white level. The white level value is used to check
the sensor deterioration condition during servicing or like.
• If the measurement value of the white level is close to that of the PW
detection level, it means that the sensor is dirty or deteriorated.
2.2.1.4 APG (Auto PG) Mechanism
The following indicates the APG DC motor specifications.
Table 2-3. APG Motor Specifications
Item Specifications
Type DC motor with brushes
Drive voltage +42V ± 5% (voltage applied to driver)
Winding resistance 64.7Ω ± 15%
Inductance 37.6mH ± 25%
Drive method PWM, constant-current chopping
Drive IC A6615
The APG Motor (DC Motor) and two APG Sensors automatically adjust the PG
amount according to the paper.
APG Motor
PG Cam
Carriage Shaft
Figure 2-2. APG Mechanism
Carriage Unit
OPERATING PRINCIPLES Printer Mechanism 19
EPSON Stylus Photo R800 Revision A
2.2.2 Printhead Specifications
The Printhead of this product is a F-Mach head.
The following shows the arrangement of the nozzles and the color
arrangement of each nozzle line when they are viewed from behind.
0.071mm
(1/360inch)
7.620mm
(216/720inch)
2.258mm
(64/720inch)
Line A
Figure 2-3. Nozzle Rear View
7.620mm
(216/720inch)
2.258mm
(64/720inch)
Line C
Line B
Carriage moving direction
(64/720inch)
Line E
Line D
31.89mm
41.66mm
(216/720inch)
2.258mm
Line F
7.620mm
2.258mm
(64/720inch)
Paper feeding
Line G
Line H
direction
0.141mm
(1/180inch)
2.2.3 Paper Feeding Mechanism
The paper feeding mechanism indicates the me ch a nism tha t feed s pa pe r or
CD-R Tray to the PF Roller Shaft.
CD-R Tray
PE Sensor
Star Wheel Rollers
Board Paper
Paper eject roller (front) Paper eject roller (rear)
Figure 2-4. Paper Feeding Mechanism
Cut sheet
PF Roller
Roll paper
Table 2-4. Relationships between Nozzle Lines and Color Arrangement
Line Ink
AYellow
B Magenta
C Cyan
D Matte-black
EPhoto-black
F Red
GBlue
H
Gloss Optimizer
OPERATING PRINCIPLES Printer Mechanism 20
EPSON Stylus Photo R800 Revision A
2.2.3.1 ASF Paper Feeding Mechanism
The following indicates the ASF Assy. driving stepping motor specifications.
Table 2-5. ASF Motor Specifications
Item Specifications
Type 4-phase, 48-pole PM type stepping motor
Drive voltage Bipolar drive/constant-current drive
Winding resistance +42 V ± 5% (voltage applied to driver)
Inductance 7.4Ω ± 10% (per phase at 25°C)
Drive method 12.0mH ± 20% (1kH, 1Vrms)
The drive of the ASF Motor is transmitted to the LD Roller in the following path.
LD Roller Drive Transmission Path
ASF Motor Pinion Gear
⇒ Combination Gear 29, 11 ⇒ Paper Back Cam
⇒ LD Roller
ASF Motor
Paper Back Cam
Driven by the ASF Motor, the ASF Assy. performs the following feeding
operation.
1. When a paper feeding command is issued from the PC or the Paper Switch
of the panel is pressed after power-on, the driving force of the ASF Motor
begins to be transmitted to the LD Roller.
2. The flag of the Paper Back Cam moves away from the home position of the
ASF Sensor and the LD Roller rotates.
3. When the LD Roller rotates one turn and the flag of the Paper Back Cam
returns to the home position of the ASF Sensor again, the LD Roller stop s
rotating.
2.2.3.2 Manual Paper Feeding Mechanism (Board Paper)
To enable direct printing onto thick paper and CD-R label, this product has the
mechanism to feed paper from the printer front manually.
1. When the Stacker is lifted, the close signal of the PG Release Sensor is
transmitted to the APG Assy. in the following order.
PG Release Sensor
⇒ Main Board ⇒ Relay Board ⇒ APG Motor
⇒ APG Assy.
2. Driven by the APG Motor, the APG Assy. sets the PG position to PG
release to release the Upper Paper Guide (Driven Roller).
3. Along the Paper Feed Guide of the Stacker, match the leading edge (front
side) of the board paper to the marking position of the Stacker.
After the above operation, press the Paper Switch. When the PE Sensor
detects that the paper is present, it detects the leading edge of the paper, and
LD Roller Shaft
Figure 2-5. LD Roller Drive Transmission Path
Combination Gear 29, 11
the printer performs paper locating and then enters the standby status.
OPERATING PRINCIPLES Printer Mechanism 21
EPSON Stylus Photo R800 Revision A
2.2.3.3 Roll Paper Feeding
Since panel operation in the roll paper mode differs from the above operation,
the differences of panel operation after roll paper feeding will be described.
1. When roll paper is fed, the PE Sensor detects the paper, and after 3
seconds have elapsed, the paper is fed.
2. The PW Sensor check for the leading edge of the paper, and if it detects
the paper, the printer operates in the Cutter Self-Cleaning Mode.
3. The printer back-feeds the paper to the paper print starting position.
At this time, panel Switch operation is invalid, and the definitions of the panel
operation and Paper Switch differ between cut sheets and roll paper.
The following describes a difference between Panel Switch operations
performed when roll paper is fed and performed when roll p aper printing data is
received from the PC.
When roll paper is fed
Pressing the Roll Paper Switch for more than 3 seconds back-feeds the
leading edge of the roll paper to the PE Sensor (the Paper LED blinks). In
this state, draw the roll paper and press the Paper Switch to return to the
panel operation that enables paper feeding from the ASF.
When roll paper printing data is received (when cutter is fitted)
When data is "No auto cut"
1. After end of printing, press the Roll Paper Switch. This feeds the
separation position in the print data to the roll paper cut position.
2. After the paper is cut, the leading edge of the paper retu rn s to th e
print starting position.
When data is "Standard 1 cut" or "Specific 2 cuts"
When roll paper printing data is received (when cutter is not fitted)
1. After end of printing, press the Roll Paper Switch.
2. A tear-off line is printed, and the roll paper is fed to the roll paper
cut position.
3. After cutting the roll paper with a pair of scissors or like, Press the
Roll Paper Switch. This returns the leading edge of the paper to
the print starting position.
1. The roll paper is cut automatically at every separation of the print
data.
2. After the paper is cut, the leading edge of the paper retu rn s to th e
print starting position.
OPERATING PRINCIPLES Printer Mechanism 22
EPSON Stylus Photo R800 Revision A
2.2.3.4 CD-R Printing Mechanism
CD-R tray home position detection sequence
Lift the Stacker (PG Release Sensor: Close), insert the CD-R Tray into the
specified position, and press the Paper Switch. This starts the following
operation.
When the close signal of the PG Release Sensor is detected, no paper is
fed from the ASF if the Paper Switch is pressed. In this case, the Paper
Switch executes a CD-R Tray home position detection sequence.
1. When the APG Assy. is driven, the PG position is set to "++" and
the Driven Roller of the Upper Paper Guide presses the CD-R
Tray.
2. When the Carriage Unit moves leftward and the PW Sensor
detects the CD-R, the Carriage Unit returns to the carriage home
position (HP).
3. After waiting for about 5 seconds at the carriage HP, the Carriage
Unit moves to the CD-R Tray HP detectable position (right end of
the CD-R Tray).
4. The CD-R Tray is pulled in the ASF direction, the PW Sensor
detects the CD-R Tray HP, and then the Carriage Unit moves to
the center of the CD-R Tray.
5. When the PW Sensor detects the white marking in the center of
the CD-R Tray, the CD-R Tray is fed in the paper ejection
direction.
6. The Carriage Unit moves leftward, the PW Sensor detects the left
side white marking, then the Carriage Unit moves rightward, and
the PW Sensor detects the right side white marking.
7. The Carriage Unit moves to the center of the CD-R Tray, and the
PW Sensor starts detection in the back-and-forth direction of the
CD-R. After the leading edge of the CD-R is detected, the CD-R
Tray is fed in the paper ejection direction, and the trailing edge of
the CD-R is detected. After that, the CD-R Tray is fed to the center
of the CD-R in the paper ejection direction.
8. The Carriage Unit moves leftward, and the PW Sensor starts
detection in the horizontal direction of the CD-R. After the left end
of the CD-R is detected, the Carriage Unit moves rightward, and
the right end of the CD-R is detected.
9. The Carriage Unit moves to the CD-R Tray HP detectable position
and stops there, and then the CD-R Tray is fed in the ASF
direction.
10. When the CD-R Tray stops operating, the Carriage Unit moves to
the carriage HP and stands by.
If the CD-R Tray HP, white marking or CD-R cannot be detected in any
specified step operation in the CD-R Tray HP detection sequence, the CD-R
Tray is ejected and Paper Out Error is displayed.
PW Sensor
Carriage Unit
CD-R Tray
CD-R home position
Figure 2-6. CD-R Printing Mechanism
OPERATING PRINCIPLES Printer Mechanism 23
EPSON Stylus Photo R800 Revision A
2.2.4 Paper Loading Mechanism
The Paper Loading Mechanism is designed to transfer the paper fed from the
ASF, Roll Paper Guide or Board Paper Guide or the CD-R fed from the CD-R
Tray according to the print data.
2.2.4.1 Paper Loading Mechanism
The following indicates the paper loading driving DC motor specifications.
Table 2-6. PF Motor Specifications
Item Specifications
Type DC motor with brushes
Drive voltage +42V ± 5% (voltage applied to driver)
Winding resistance 22.3Ω ± 25%
Inductance 17.3mH ± 25%
Drive method PWM
Drive IC A6615
Like the CR Motor, a DC motor is used as the PF Motor in this product.
Closed loop control based on the DC Motor and Rotary Encoder has the
following advantages.
Improved paper feed accuracy
Paper feed amount control
The driving force of the PF Motor is transmitted to the PF Roller and Paper
Eject Roller in the following path.
PF Roller Drive Transmission Path
PF Motor Pinion Gear
⇒ PF Timing Belt ⇒
Combination Gear 36.294, 45.5 ⇒ PF Roller Shaft
Paper Eject Roller (front) Drive Transmission Path
PF Motor Pinion Gear
⇒ PF Timing Belt ⇒
Combination Gear 36.294, 45.5 ⇒ Spur 31.5 ⇒ Spur 54 ⇒
Paper Eject Roller (front)
Paper Eject Roller (re ar) Drive Transmission Path
PF Motor Pinion Gear
⇒ PF Timing Belt ⇒
Combination Gear 36.294, 45.5 ⇒ Spur 31.5 ⇒ Spur 54 ⇒ Spur 18 ⇒
Spur 15.5
⇒ Spur 18 ⇒ Paper Eject Roller (rear)
The following shows the part names and outline of the drive transmission path.
Paper is transferred in the above driving force transmission path.
Combination Gear
36.294, 45.5
PF Timing Belt
Pinion Gear
Spur 18
Spur 31.5
PF Motor
Spur 15.5
Front Paper
Guide
Spur 54
Spur 18
PF Roller
Paper Eject
Roller (front)
Paper Eject
Roller (rear)
Figure 2-7. Paper Loading Mechanism 1
OPERATING PRINCIPLES Printer Mechanism 24
EPSON Stylus Photo R800 Revision A
The fed paper is detected by the PE Sensor, and its leading edge is then
transferred to the front of the Front Paper Guide.
To eliminate the deflection of the paper, the paper is then returned toward the
ASF Assy. by the specified number of steps according to the paper feed mode.
The paper is transferred again to the specified paper locating position of the
Front Paper Guide.
Print Head
Paper
Paper eject roller (front) Paper eject roller (rear)
Star Wheel Rollers
Driven Roller
PF Roller
Figure 2-8. Paper Loading Mechanism 2
2.2.4.2 PF Measurement Sequence
The mechan ical load in the pap er loading path is measured in the following
cases to perform control so that an adequate current value is set according
to the mechanical load.
When power is switched on
When the Ink Cartridge is replaced
When the removal or fitting of the cutter is recognized in the paper feed
sequence
When the mech anical load in the paper loa ding p ath reaches the specified
value, Fatal Error is displayed. (When the cutter is not fitted)
When the cutter is fitted, the mechanical load when the cutter is fitted is
measured and reflected on the control since the mechanical load of the
cutter must be taken into consideration to set the adequate current value.
OPERATING PRINCIPLES Printer Mechanism 25
EPSON Stylus Photo R800 Revision A
2.2.5 Ink System Mechanism
The Ink System Mechanism consists of the following mechanisms.
Pump Unit (including the CR Lock Lever)
Cap Unit
2.2.5.1 Pump Unit
The Pump Unit is designed to suck ink from the Print Head or Cap Unit. The
Cap Unit has a built-in Head Cleaning Wiper.
The following indicates the Pump Unit driving stepping motor specifications.
Table 2-7. Pump Motor Specifications
Item Specifications
Type 4-phase, 48-pole PM type stepping motor
Drive voltage Bipolar drive/constant-current drive
Winding resistance +42 V ± 5% (voltage applied to driver)
Inductance 10.3Ω ± 10% (per phase at 25°C)
Drive method 13.4mH ± 20% (1kH, 1Vrms)
The following operations are performed when the drive of the Pump Motor is
transmitted to the Pump Unit.
Table 2-8. Pump Motor Rotation Directions and Functions
Pump Motor Rotation Direction* Functions
• Cap closing
CW direction
CCW direction
• Ink suction
• Wiper resetting
• CR Lock setting
• Cap opening
• Pump release
• Wiper setting
• CR Lock resetting
2.2.5.2 Drive Transmission Path to Pump Unit
The drive of the Pump Motor is transmitted to the Pump Unit in the following
path.
Moto r Pinion Gear
⇒ Combination Gear 10.2, 21.2 IS
⇒ Spur Gear 20.4 IS ⇒ Pump Unit
The following shows the internal part names and operation outline of the Pump
Unit.
<Pump Unit inside>
Combination Gear 10.2, 21.2 IS
Spur Gear
20.4 IS
Motor Pinion Gear
Figure 2-9. Outline of Pump Unit Inside
Note: As the rotation directions of the motor, CW indicates a clockwise
direction, and CCW indicates a counterclockwise direction, as seen
from the output shaft side of the motor mounting plate.
OPERATING PRINCIPLES Printer Mechanism 26
EPSON Stylus Photo R800 Revision A
The following shows the Pump Unit operating principle.
Cap Unit Side
To Waste ink pad
Figure 2-10. Pump Unit Operating Principle
Ink suction
1. The Pinion Gear of the Pump Motor rotates in the CW direction.
2. The Roller turns and simultaneously presses the tube.
3. Ink is fed from the Cap Unit toward the Waste Ink Pad.
Pump release
1. The Pinion Gear of the Pump Motor rotates in the CCW direction.
2. The Roller moves away from the tube and releases the tube.
3. Ink is not sucked.
2.2.5.3 Cap Unit
The Cap Unit is designed to bring the Cap into close contact with the Print
Head surface and suck ink by the driving force of the Pump Unit to secure air
tightness in the Cap.
When the printer is in a standby status or its power is OFF, the Cap Unit
prevents the ink from thickening.
Ink is fed to the Waste Ink Pad in the following path.
Ink Cartridge
The following diagram shows the outline of Cap Unit operation.
Print Head
⇒ Head Cavity ⇒ Cap ⇒ Waste Ink Pad
Carriage Unit
Cap
Slider cap rises to perform
capping.
Figure 2-11. Capping Mechanism
OPERATING PRINCIPLES Printer Mechanism 27
EPSON Stylus Photo R800 Revision A
2.2.6 Ink Sequence
The following ink sequence is executed according to various timer, counter,
flag and other information saved on the EEPROM.
CSIC-related sequence
The ink type code stored in the CSIC Memory Chip is identical regardless
of the Japanese domestic or overseas cartridges, and is saved at the Main
Board EEPROM.
At power-on, data is read from each color CSIC and the CSIC data status
is made valid. If the data read from each CSIC has any problem, Ink
cartridge error or Ink end error is displayed.
After CSIC operation is checked, the ink consumption of the I/C currently
installed per color is compared with the ink consumption saved in the
printer EEPROM, and control is performed under the following conditions.
When current I/C consumption differs (from ink consumption in
EEPROM)
1. On the assumption that the I/C has been changed at power-off, the
first I/C flag is reset.
2. The installation count in the printer EEPROM is updated for the
CSIC. In the CSIC information replacement sequence, the CSIC
side ink consumption data is updated to the ink consumption data
in the printer EEPROM.
3. The used model name data on the I/C side is rewritten.
Note: Reason why the used model name data is rewritten from the
printer to the I/C: To grasp which printer used the I/C removed.
4. The change flag 2 (flag that indicates change CL) is set and CL is
executed.
When current I/C consumption is the same (as ink consumption in
EEPROM)
1. When the initial filling flag is set and the CSIC side ink
consumption is 0, the printer judges that initial filling is not yet
performed.
(The printer before initial filling judges that the I/C is fitted in a
power-off status.)
2. Installation count updating, CSIC information replacement, and
initial filling are executed in this order.
3. If the initial filling flag is not set, the printer judges that I/C change
was not made at power-off and regards the CSIC data as valid.
Data is written to the CSIC at the following timings.
At powe r- of f
In the power saving mode
At the tim e of Ink C artr i dg e re pla ce m en t
At the time of cleaning
1. Data is read from the CSIC and developed in the RAM on the Main
Board.
2. The data is compared with the ink consumption in the printer
EEPROM. If the data are the same, the data is written to the CSIC.
If they are different, only the consumed difference is added and
written to the CSIC. When cleaning is performed, the CL count is
also written, and when the I/C is changed, the installation count is
also written.
OPERATING PRINCIPLES Printer Mechanism 28
EPSON Stylus Photo R800 Revision A
Initial ink filling
When the printer is powered on for the first time after the purchase of the
product, the printer executes the initial ink filling operation to fill the ink
cavities of the Head with ink. When the initial ink filling operation is
performed properly, the printer clears the flag in the EEPROM so that initi al
ink filling operation will not be performed when it is powered on next. The
Stylus Photo R800 requires about 150 seconds to perform the initial ink
filling operation and consumes about 1/ 7 of the new ink cartridge.
If the sequence does not end normally during initial filling, the initial filling
flag is not cleared and the CL operating flag is set. Because of these flags,
when powered on next time, the printer assumes that it was powered off for
some reason during initial filling and executes CL3 instead of the initial
filling sequence. (On the conventional mode, initial filling was executed
again. However, when this operation was performed, ink was wasted and
therefore CL3 is executed to cover the ink filling performance.)
When the initial filling flag is set and the CL operating flag is not set, the
printer assumes that the initial filling was not executed at all (power was
switched on but the cartridges were not set), and when the printer is
powered on next time, it executes initial filling.
Change cleaning
Change CL1 is executed when Ink Cartridge change is made.
Change CL1: 3.4g (0.425g per color)
Manual cleaning
This product provides three different manual cleanings to remove ink
coagulated by air bubbles, viscous material or foreign matter. Perform the
following manual CL operations by operating the panel or using the utility
included in the printer driver.
Independently of the printing path after the previous CL, perform manual
CL from CL1 to CL3 in order if the cumulative printing timer counter is less
than 7min. Only when the cumulative printing timer counter is more than
7min, execute only CL1.
CL1: 1.704g (0.213g per color)
CL2: 4.488g (0.561g per color)
CL3: 7.120g (0.890g per color)
Wiper operation
Clean the nozzle surface with the right-half rubber part of the wiper.
Flushing operation
Prevent color mixture. Stabilize the ink surface inside the nozzles.
If the remaining ink amount of the I/C is short or the I/C is in an Ink Low/Out
status, all manual cleanings are disabled and STM3 shows the condition.
OPERATING PRINCIPLES Printer Mechanism 29
EPSON Stylus Photo R800 Revision A
Timer cleaning
Ink is consumed depending on the combination of the cumulative printing
timer, cumulative cleaning count and cleaning timer.
Flushing
Two different flushing operations are executed for the following reasons.
Periodic flushing
This is done to prevent ink viscosity in the Print Head nozzles from
increasing during continuous printing. A specific small amount of ink is
discharged into the Cap according to the Periodic flushing timer.
Periodic large-amount flushing
This is done to prevent ink viscosity in the Print Head nozzles from
increasing during continuous printing. A large amount of ink is
discharged into the Cap according to the Periodic large-amount
flushing timer.
2.2.7 Paper Cutter Mechanism
The Paper cutter mechanism consists of such main parts as the Cutter Motor,
left and right HP Sensors (2 pcs. in all), Relay Board, Paper Eject Roller and
Paper Holddown Flap in the Cutter unit.
Operation during printing
When the Cutter Blade starts cutting, the Paper Hold-down Flap rises.
The paper is held and simultaneously cut.
The HP Sensors installed on both ends of the Cutter operating area
detect the Cutter Blade position.
The HP Sensors detect whether the Cutter Blade operates properly,
and Cutter Position Error or Cutter Jam Error is displayed according to
the operating condition.
Paper Holddown Flap
Left HP
Sensor
Right HP Sensor
Cutter Blade
Cutter Motor
Paper Eject Roller
Relay Board
Figure 2-12. Paper Cutter Mechanism
OPERATING PRINCIPLES Printer Mechanism 30
EPSON Stylus Photo R800 Revision A
2.2.7.1 Cutter Initialization Sequence
When the Cutter is fitted, the Cutter initialization sequence is executed if the
printer has confirmed that the Cutter has been fitted (the Power Switch blinks
about 5 seconds).
Cutter Initialization Sequence
The initialization sequence is performed to securely put the Cutter Blade in
a standby position detected by the right HP Sensor if the Cutter Blade is
not detected by the right HP Sensor.
The initialization operation is not performed if the Cutter Blade is in the
right HP Sensor position when the Cutter is fitted.
During Cutter operation, Cutter Position Erro r or Cutter Jam Erro r ma y oc cur .
These errors are explained below.
If the Cutter Blade cannot reach the left or right HP Sensor, the Cutter
Blade is returned to the HP Sensor located in the motion starting position
(right HP Sensor).
Cutte r Ja m Err or
Indicates that the Cutter Blade can return to the HP Sensor position in
the motion starting position within 3 seconds.
Cutter Position Error
Indicates that the Cutter Blade cannot return to the HP Sensor p osition
located in the motion starting position within 3 seconds.
Paper cutting by the Cutter consists of the basic cutting sequences 1 and 2.
Basic cutting sequences 1
Means movement from the right HP Sensor to the left HP Sensor. At this
time, as soon as the Cutter Blade starts moving from the right HP Sensor,
the Timer starts. If the left HP Sensor does not detect the Cutter Blade
within 3 seconds, the Cutter initialization sequence is executed and then
Cutter Jam Error or Cutter Position Error occurs.
Basic cutting sequences 2
Means movement from the left HP Sensor to the right HP Sensor. At this
time, if the Cutter Blade cannot move from the left HP Sensor to the right
HP Sensor within 3 seconds, Cutter Position Error occurs.
2.2.7.2 Cutter Self-cleaning
This sequence indicates the operation performed to hold down and remo ve the
ink, which may stick to the Plate above the Paper Hold-down Fl ap (Plate where
the paper print surface comes into contact), with the leading edge of the fed roll
paper.
The Cutter Blade must be operated left-to-right to operate the Paper Holddown Flap. At this time, the Cutter Blade generates operating noise during
Cutter self-cleaning when the roll paper is fed.
2.2.7.3 Cutter Cleaning (Driver Side)
This sequence is executed on the driver side. By cutting the roll paper three
times at intervals of 7cm, the ink that may stick to the Cutter Blade is removed
to clean the Cutter Blade.
OPERATING PRINCIPLES Printer Mechanism 31
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