ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means (electronic, mechanical, photocopying, recording or otherwise)
without prior written approval from the author. The author reserves the right to revise this publication
and to make changes in it at any time without obligation of the author to notify any person or organization of such revisions or changes.
All precautions have been taken to avoid errors or misrepresentations of facts, equipment, or products.
However, the manufacturer does not assume any liability to any party for loss or damage caused by errors
or omissions.
The machine technology is protected by - but not limited to - the following patents:
• U.S. 4,955,305
• U.S. 6,823,807
• U.S. 5,603,462
• U.S. 5,832,853
• U.S. 6,445,970 B1
• U.S. 6,732,668 B2
• U.S. 6,729,255
• U.S. 6,871,605
• U.S. D 474,785 S
• U.S. 6,736,077 B2
• CH 693569 A5
• EP 0 666 351 B1
• more patents pending
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About This Manual
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This manual contains instructions on repairs and adjustments to the embroidery machine, in addition to
other technical information.
If you do not fully understand any information in this manual, you are advised to contact your local au-
thorized technical support provider for assistance.
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Scope of Manual
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This technical manual is a guide to performing repairs and adjustments that go beyond routine operator
maintenance.
Although these procedures are best understood and performed by professional service technicians in
conjunction with specic factory technical training, much of the information in this manual is a useful
reference for others who might possess appropriate technical aptitude and skills.
Note: This manual is written for individuals with adequate knowledge, Melco certied training
•
or equivalent and experience in the use of tools required. No attempt is made to explain how
to use tools required to make repairs to the machine other than graphical depictions within the
procedures involved.
This technical manual species that certain functions are to be performed only by authorized service technicians. This is because specialized training and/or special tools or xtures are required in order to per-
form the function correctly. Performing repairs to the machine may result in damaged components, poor
machine performance, and potential injury to the technician or operator.
If you do not fully understand any information in this manual, contact technical support for assistance
before performing the procedure. The technical support staff are professional service technicians trained
on this equipment. They have acquired technical expertise through experience and technical training.
Additionally, certied equipment technicians routinely receive up to date servicing information to further
enhance their product knowledge.
This technical manual is presented in six sections:
1. Introduction to the manual and various service requirements
2. General information and specications containing all of the engineering settings and specications
you need to know when adjusting the machine
3. Lubrication schedules and procedures
4. Service and repair - detailed instructions to service and repair the machine
5. Options - maintenance and repair of optional equipment
6. Troubleshooting - a troubleshooting guide for problems commonly encountered with the machine.
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Standard Conventions and Denition of Terms
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Throughout this manual abbreviations and specic terms may be used. When abbreviations or technical terms are used, they are dened through the use of pop-up hot spots, which opens a dialog box to
explain their meaning. Hot spot text is green and underlined. To access a pop-up hot spot simply click the
underlined word to read its explanation.
Certain procedures in the manual require actions such as pressing a certain key, or typing some letters on
the computer keyboard. The following is a list of some of the more commonly used conventions found in
this manual:
• To indicate a key on the computer keyboard, the key in question is enclosed in brackets, for example: Press the [Enter] key to initiate the application.
• A key on the interface keyboard is represented by a picture of that key.
Attention Styles:
Occasionally in the manual, special attention is required. In these situations, certain images and text styles
are used to attract your attention to a particular message. The following styles are used to denote certain
types of messages.
WARNING!! Situations which may result in personal injury if not performed correctly.
•
CAUTION!! Situations that might result in damage to equipment or property but is not likely to
•
result in personal injury.
IMPORTANT: Situations critical to correct machine operation that is not likely to result in damage
•
to the machine or personal injury.
NOTE: Important information that is signicant, but not likely to result in interference to correct
•
machine operation.
TIP: Helpful information that might make a procedure easier or more efcient.
•
When a reference to a part description is in bold type, that reference is the actual part description as
listed in the machine parts manual. The parts manuals are unique for each machine depending on serial
number and date of build. For part numbers, pictures, and assembly diagrams, refer to the parts manual
issued for that particular machine.
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Regulatory Notices
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(U.S.) The FCC (Federal Communications Commission) mandates that if a user makes changes or modi-
cations to the machine not expressly approved by the manufacturer, the user’s authority to operate the
machine may be voided.
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Best Maintenance Repair Practices
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The procedures presented in this manual are to be considered best maintenance repair practices. These
procedures are intended to optimize the performance and durability of your machine. Best maintenance
repair practices are to be performed using the correct tools and xtures while adhering to all safety precautions appropriate for each job.
WARNING!! Personal injury may result if proper precautions are not observed. Remove rings,
•
watches, and any other metallic objects from hands and wrists before servicing the machine.
Remove metallic articles from shirt pockets to prevent them from falling into the machine. Do
not allow loose clothing or long hair contact moving parts of the machine. Under certain conditions of machine failure, the moving parts of the machine may not be controllable by normal
means. At these times, the machine may operate without notice.
CAUTION!! Use extreme care not to drop metallic objects, tools, or other conductive material on
•
the main Printed Circuit Board (PCB) when you have the base cover removed. If you drop such
objects on the main PCB, it can severely damage the electronics which will be very expensive to
repair.
Maintenance Philosophy:
The maintenance philosophy used in this manual is to isolate potential problems within the system to the
smallest practical replacement assembly. Therefore, components are typically not repaired, but rather, a
circuit board or mechanical subassembly may be replaced.
In the process of isolating problems in the machine, the person performing the troubleshooting must also
practice good troubleshooting techniques. Good troubleshooting techniques include, but are not limited
to, guarding against static electricity that can result in further damage to machine components, and only
replacing one part at a time to enable identication of the defective part after the machine is repaired.
WARNING!! Failure to practice Best Maintenance Repair Practices may result in injury to person-
•
nel performing the work and/or damage to the equipment. The warranty is exclusive of, and
may be VOID if poor maintenance practices have caused damage to the equipment.
Dust:
As with any electronics, the worst source for contamination for the PCBs and the Control PCB is dust.
Although great care has been made during the design of the electronics in the machine, dust accumulation may cause failure of the machine if it is allowed to accumulate.
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CAUTION!! DO NOT use solvents of any type on the printed circuit boards (PCBs) or sensors.
•
Solvents will damage the electronic components. Use only compressed air to clean these items.
Using compressed air, blow the dust away from sensors and off the PCB’s in the machine. In addition,
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minimize dust accumulation cleaned on all exposed surfaces. Excessive dust will reduce the useful life
span of the machine.
Sensors should be cleaned with dry, compressed air during each of the lubrication cycles. Dust accumulation in the base around the control PCB should be blown out every month or whenever the base cover is
removed for any type of maintenance.
Liquid Cleaning Compounds:
Never spray liquid cleaning compounds directly onto the machine, especially if it is turned on or connected to an electrical supply outlet. Always spray cleaning compounds onto a rag and wipe the machine
clean. Liquid cleaners can, if sprayed directly on the machine, get onto electrical components and short
them out. Optical sensors are very sensitive and may be damaged by liquid cleaning compounds.
Obstructions:
Obstructions of machine movements can cause severe damage. Obstructions include things like fabric
getting caught in the gears, loose hardware left inside the machine, thread accumulation around the
grabber blade, Velcro, and anything that hinders the machine’s moving parts. It is very important to clear
obstructions from any subsystem immediately before damage or excessive wear occurs.
Use Proper Parts For The Job
It is very important that you use the proper parts for the job, especially needles. Refer to the Operator
Manual for information on needle selection. Using the wrong needle will increase the frequency of frays
and thread breaks and will decrease performance of the machine.
Avoid using substandard substitute parts on the machine. Always use manufacturer distributed parts or
better to ensure superior quality output of your machine. When considering buying substitute parts, i.e.,
hardware, it is strongly recommended that you consult Technical Support and obtain the specications to
ensure that you get the equivalent grade or better parts.
Use The Correct Tools When Making Repairs
Always use the correct tools when making repairs or performing maintenance on the machine. No attempt has been made in this Manual to explain what tools to use. It is assumed that the person who
makes repairs or performs maintenance on the machine has the proper technical aptitude and training to
allow them to do so. Using tools incorrectly or using the wrong tools can cause damage to the machine
and result in personal injury.
The use of poor quality tools such as multimeters and mechanical measuring devices can produce unpredictable and often unsatisfactory results. Always purchase tools for repair or maintenance on the machine
that are of standard design and professional quality. You may if desired, consult Technical Support for
assistance in recommending such tools as multimeters and measuring devices before you purchase them.
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Drive Belt Tensions:
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CAUTION! Damage to the machine may result if belt tensions are improperly adjusted. All drive
•
belts require special procedures and tools for setting the proper tensions. If the tension adjustments are made without using the proper procedures and tools (and without training in some
cases), poor performance, excessive wear, damaged components, personal injury, and voided
warranty may result.
Scheduled Maintenance:
Scheduled maintenance is lubrication, cleaning, measurements, and inspections that are specied on a
periodic schedule.
Scheduled maintenance is prescribed in the operator manual for the machine. Failure to perform scheduled maintenance will result in poor performance and eventual failure of the machine. In addition, failure
to perform the maintenance prescribed in the operator manual can affect warranty protections.
Lubrication:
Lubrication should be done whenever a part is replaced or repaired and as prescribed according to the
Lubrication Specications. When applying lubricants to any parts, use only the approved lubricants and
application methods specied in the Lubrication Specications.
CAUTION! Damage to the machine will result if inadequate or excessive lubrication is applied
•
to machine parts. Failure to adhere to lubrication specications will result in premature wear,
poor performance, and potential warranty issues.
Torque Measurements:
Apply proper torque to all screws, bolts, and nuts or similar parts used in the machine. Torque specications are provided for a reason. They have been developed from years of experience with the parts
involved. Avoid guessing at the torque applied to a part and measure it, especially where measurement is
specied.
CAUTION!!Inadequate torque can result in premature failure of the part involved, usually
•
causing it to come loose. Excessive torque usually results in stress to the part that will not always be detectable. The part can fail later during machine operation and can cause catastrophic machine failure.
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Grounding and Static Electricity
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WARNING!! It is very important that the power cord is plugged into a properly wired electri-
•
cal outlet. Failure to have a properly wired outlet may result in damage to the equipment and
personal injury. It is recommended that a licensed electrician be consulted to ensure that the
electrical outlet is properly wired and grounded. If a properly wired electrical outlet is not used
for the source supply voltage to the system, electrical failures may result.
Static Electricity:
As with all computerized equipment, your machine is sensitive to static electricity. Any time work is
performed inside covered areas of the embroidery machine, the person performing the work must use
a static grounding strap or take adequate steps to dissipate static build-up prior to touching electronic
components.
WARNING!! Failure to use a grounding strap, or failure to practice other good maintenance/
•
repair techniques may cause damage to the machine and possible personal injury.
CAUTION!! Unless otherwise specied within these procedures, DO NOT disconnect the
•
electrical supply input cord from the machine or the electrical input source outlet. Doing so will
remove the ground connection needed to dissipate the electrical static build-up prior to working on the internal components in the machine. Always make contact with the exterior metal
portion of the machine for about one minute to dissipate any electrical static build-up in your
body before touching any electronic component of the machine, especially the main board.
Grounding Strap Use:
A grounding strap should be connected properly to ensure that static charge on the person’s body is neutralized to the chassis ground of the embroidery machine when working in the electronic areas under the
covers. Proper connection is provided at any bare (unpainted) metal surface or any other surface (such as
a ground screw head) that is known to be an earth ground. If a ground strap is not used or is not available, touch the chassis for about a minute to dissipate any static build-up before you touch any electronic
component inside the machine (with the machine turned off and the power input cord connected to an
electrical outlet).
WARNING!! DO NOT attempt to use any grounding strap that is not specically designed for
•
static use. A “straight-wire” grounding device (one without built-in resistance) will place the
operator in danger of exposure to dangerous voltages. It is recommended that the static strap
be checked during daily use for proper resistance protection.
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CAUTION !! Use extreme care not to damage the cable and protective coating during assem-
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•
bly. If the protective coating is damaged, the cable will wear out very fast impacting the quality
of the sew outs.
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Machine Orientation
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The references in the manual to certain sections of the machine are oriented as if you were facing the
front of the machine as shown below. Example: The “left” arm cover is on the left side of the machine
when you face it from the front, but is on the right side if you face it from the rear. The part however, is
called the “left” arm cover since it is installed on the left side, oriented as you face the machine from the
front.
Left SideRight Side
The left and right sides of the machine are oriented just as if you were facing it from the front side of the
machine directly.
The rear of the machine refers to the entire back side of the machine.
The front part of the machine refers to the entire front section of the machine.
The upper arm assembly, lower arm assembly, needlecase, user interface, and thread tree refer to the
entire individual assembly and associated components.
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Safety Issues
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Voltages
WARNING!! Lethal voltages exist inside the power supply unit, at the back side of the electrical
•
supply input connector, and in the wires between the two. If you plan to do any work with any
of these components, turn the power switch off and disconnect the electrical input supply cord
from the machine.
WARNING!! DO NOT disassemble the power supply unit. It contains no customer or eld ser-
•
viceable parts. The internal components in the power supply unit may contain dangerous voltages even when the power is disconnected. Disassembling the power supply can cause severe
injury resulting from electrical shock, and may void the warranty.
WARNING!! DO NOT operate the machine with the lower rear cover removed, except when
•
indicated by the instructions in this manual. Operating the machine without the covers creates
a risk of severe electrical related injury.
Hazardous Material Notices:
WARNING!! The lubricants specied in this Manual contain known carcinogens. Do not allow
•
lubricants to come into contact with your eyes, mouth, or nose. Always wash your hands thoroughly after performing lubrication procedures.
WARNING!! When using solvents to clean components in the machine, always ensure adequate
•
ventilation. Allow all solvents to completely evaporate before turning the machine back on to
prevent shorting out electrical components. Vapors from most solvents are both toxic and ammable. Dispose of rags soaked with solvent properly.
Moving Parts:
WARNING!! Do not operate the machine without the covers being installed. Moving parts can
•
cause crushing and pinching injuries. In addition, fabric and other materials can get caught in
the moving belts and gears and damage the machine.
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WARNING!! Do not attempt to pull on or trim threads near moving needles. This can result in
•
painful injury.
Warranty Considerations
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Many areas of maintenance in this manual require factory trained personnel to ensure proper service. Any
service that is improperly performed may void the warranty.
Items that are marked “...should be done by an authorized service technician” should be performed by
a repair technician that has been authorized by the manufacturer. Performance of these items requires
special training and/or tools and involves a great deal of difculty. If technician only items are repaired/installed incorrectly, it will void all applicable warranty considerations and can cause further damage to the
machine.
The use of other than manufacturer issued or recommended parts, hardware and lubricants can affect
warranty considerations. It is strongly recommended that you use only products from the manufacturer
or products recommended by technical suppport on your embroidery machine(s).
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Explanation of Machine Symbols
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These labels are placed on the machine at specied locations to warn you of certain machine hazards.
Caution!!
Indicates a machine component will move. Keep clear!
Shock Hazard. No user replaceable parts behind this label. Do not open!
Moving gears. Keep clear!
Vertical Pinch Point. Keep clear!
Horizontal Pinch point. Keep clear!
Needle Pinch point. Keep clear!
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Keypad Operations
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FunctionPress these key(s)Keypad PicturesNotes
To Start SewingStart
Press the stop key to
stop sewing
To Stop SewingStop
Cuts power to the
motors.
Emergency Stop
E-Stop
Select MachineCenter
To move the hoop upHoop + Down Arrow
To move the hoop down Hoop + Up Arrow
To move the hoop leftHoop + Right Arrow
To move the hoop rightHoop + Left Arrow
+
+
+
+
Press the start key to
start sewing
To release, turn a quarter turn in the direction of the arrows and
release.
Selects the machine
to be displayed in the
software
Always trace after
moving
Always trace after
moving
Always trace after
moving
Always trace after
moving
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FunctionPress these key(s)Keypad PicturesNotes
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To move the hoop down
and to the left (moves
Hoop + Right + Up
+ +
Always trace after
moving
needle position up and
to the right in relation to
the hoop)
To move the hoop up
and to the left (moves
Hoop + Right + Down
+ +
Always trace after
moving
needle position down
and to the right in relation to the hoop)
To move the hoop down
and to the right (moves
Hoop + Left + Up
+ +
Always trace after
moving
needle position up and
to the left in relation to
the hoop)
To move the hoop up
and to the right (moves
Hoop + Left + Down
+ +
Always trace after
moving
needle position down
and to the left in relation to the hoop)
To center the current
Hoop + Center
hoop
Clears and ignores
Hoop + Adjustment
the “Trim Required”
message.
To trace the designHoop + Trace
+
+
Center hoop before
beginning to sew
This indicates to the
machine that no thread
is through the cloth.
Repeat to trace again
To frame back one stitch
at a time
To frame forward one
stitch at a time
To increase the sewing
speed
To decrease the sewing
speed
To move the needlecase
to the right
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Hold down the Frame
Back key
Hold down the Frame
Forward key
Adjustment + Up Arrow
Adjustment + Down
Arrow
Needlecase key + Right
Arrow
+
+
+
+
Press the stop key to
stop framing
Press the stop key to
stop framing
The speed will increase
50 spm each time
pressed
The speed will decrease
50 spm each time
pressed
FunctionPress these key(s)Keypad PicturesNotes
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To move the needlecase
to the left
To color change to the
next color
To color change to the
previous color
Return to Previous Stitch Left Arrow + Right
To turn the laser onLaser
Toggle front grabberAdjustment + Center
Trim ImmediateAdjustment +
To manually feed threadLaser + Up Arrow
Needlecase key + Left
Arrow
Needlecase key + Up
Arrow
Needlecase key + Down
Arrow
Arrow
Needlecase
+
+
+
+
+
+
+
If a hoop has been
moved during the sewing of a design, pressing
this combination will
move the hoop back to
the position of the most
recent stitch to sew.
This will allow you to
see the active needle
position
Toggle to thread the
needle
Manually feeds thread
on the current needle
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Keypad Buttons
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Trace Button
The trace button is used to trace the design, a method used to help the operator determine if the design
is properly centered and ts within the hoop used.
+ To trace a design, press the Hoop button and the Trace button.
Arrow Up Key (Y-Axis Back)
+
+ The hoop key and the arrow up key performs a manual jog, moving the stitch point to the top
of the design. The hoop actually moves towards the front of the machine.
+
The needle case moves to the next color.
The sew speed (stitches per minute) is increased.
Color Change/Needle Case
When used in conjunction with the arrow keys, the machine will perform a color change function (moving the hoop) or move needle case left or right.
+
+
+
+
Needle case to the left
Needle case to the right
Color change to next color
Color change to the previous color
Arrow Left Key (X-Axis Left)
+
the right.
The machine performs a “manual jog”, moving stitch point left. The hoop actually moves to
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+
The needlecase moves to the left.
Arrow Right Key (X-Axis Left)
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+ The machine performs a “manual jog”, moving stitch point right. The hoop actually moves to
the left.
+
The needle case moves to the right.
Center Key
+ When used with the hoop key , the machine moves to hoop center.
+ When used with the adjustment key, the machine toggles the safety grabber in and out. This
is helpful in tucking threads back into the trap behind the needles for moving the grabber out of the way
for changing of threading a needle.
Pressing the Center key will select the machine to be displayed in the software.
Adjustment Key
The adjustment key is used to adjust the thread feed or the machine speed.
+ Adjustment key and the Arrow Up key increase the sew speed (stitches per minute).
+ Adjustment and Arrow Down key decrease the sew speed (stitches per minute)
+ Adjustment and the Center key toggles the safety grabber in and out (for needle threading
access)
Arrow Down Key (Y-Axis Forward)
+
+ The Arrow Down key with the Hoop key performs a manual jog, moving the stitch point towards the bottom of the design. The hoop actually moves towards the back of the machine.
The Arrow Down key the Needle Case key moves to the previous color.
+ The Arrow Down key with the Adjustment key decreases the sew speed of the machine.
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Hoop Key
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The Hoop key is used to move the position of the needle in relation to the hoop.
+ The Hoop Key and the Arrow Up key move the needle position up, towards the top of the
hoop (moves the hoop forward, toward the front of the machine.
+ The Hoop Key and the Arrow Down key move the needle position down, towards the bottom
of the hoop (moves the hoop towards the back of the machine).
+
to the right)
+ The Hoop Key and the Arrow Right key moves the needle position to the right (moves the
hoop to the left)
+ The Hoop Key and the Center key moves the hoop to hoop center position
The Hoop Key and the Arrow Left key moves the needle position to the left (moves the hoop
Step Back Key
The step back key moves the machine backwards on the design (to a lower numbered stitch point).
This allows the operator to restitch a certain portion of a design if needed.
Step Forward Key
The step forward key moves the stitch point in the design forward (to a higher numbered stitch
position).
Laser Key
Press and hold the laser key to turn the laser on. The laser stays on as long as the key is pressed.
+ You can also press and hold the laser key , then press the up arrow to manually feed thread
on the current needle. This function is useful when threading a needle because it can be used to supply
more thread (replacing the need to lift the pinch roller and pull out more thread).
Start Button
Pressing the start button while the machine is not running and is at the start of a design will start the
sewing of the design.
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Pressing the start button while the machine is stopped will re-start the machineat the stitch number
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where the machine was stopped.
Stop Button
The stop button stops the machine operation but does not disconnect electrical supply to the motors and
electronics.
Do not confuse this button with the Emergency Stop button. The machine can still start if there
•
is a machine fault somewhere. The stop button does not disconnect power from the motors or
internal components.
Emergency Stop Button
The emergency stop button breaks the electrical circuit to all of the motors to prevent its operation.
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LED Indicator
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The Status Indicator LED is illuminated when the machine is turned ON.
The LED color and whether it is blinking indicates the machine status or if it has a fault.
Status Light ConditionDenitionAction to Take
Green (blinking)Machine is on, but no RSA les
Start software, check connections
loaded yet
Green (continuous)Machine is on and ready for
operation
Red (blinking slow)Indicates a thread breakRe-thread the needle with thread
break
Red (blinking fast)Indicates the machine has run
Replace the bobbin
out of bobbin thread
Red (continuous)Indicates the machine is in E-Stop
engaged mode
Release the red emergency stop
button
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