JUKI FX-1 Operating manual

High-Speed Modular Mounter
FX-1/FX-1R
MAINTENANCE GUIDE
JUKICORPORATION
ELECTRONICASSEMBLY&
TESTSYSTEMSDIVISION
SMTCENTER

(1) This manual or software may not be copied or reproduced (duplicated), in whole or part,
without the express prior written consent of JUKI Corp.
(2) This manual is subject to change without notice.
(3) This manual is written as carefully as possible. However, if you have a question,
or find a mistake or missing information, contact our dealers or JUKI Corp.
(4) JUKI Corp. is not responsible for any defects or malfunction due to your abnormal
operation.
Im
p
ortant

Warning For the safe operation of machinery!!
All personnel engaged in the operation of the chip placer and its accessories (here after
referred to as "machines") including the operators, service and maintenance personnel are
required to read through this safety warning to make familiar with its handling to prevent
accidents and injuries.
This "Warning: For the safe operation of machinery" instructions contain aspects that are
not included in the instruction sheet attached to the product.
The following symbols are used throughout this instructions and on the product for the better
understanding of various warning labels. Please make yourself familiar with the contents
and act accordingly.
1) Danger levels
Dangerous
Parts of machinery the negligence or mishandling of which
committed during the operation, maintenance or other services on
such parts will lead to severe accidents involving serious personal
injuries or even death.
Warning
Parts of machinery the negligence or mishandling of which
committed, or are left unattended, during the operation, maintenance
or other services on such parts may cause potential danger to the
personnel which may lead to injuries and/or even death.
Attention
Parts of machinery the negligence or mishandling of which
committed, or are left unattended, during the operation, maintenance
or other services on such parts may cause the medium-to-light level
of hazards to the personnel involved.
2) Warning, prohibition and directive marks
Warning, prohibition and directives are marked with the following symbols:
Warning marks
Your hands or clothes may get
caught by the machines.
Beware of moving parts.
Contacts with them may cause
injuries.
High voltage!!
Beware of electric shocks.
Beware of hot parts.
Contacts with them may cause a
burn.
Beware of movable parts.
Contacts with them may cause
injuries.
If any load is imposed or you
lay your hand on the machine,
it may be damaged.
Directive symbols
It symbolizes a contact to a
grounding wire. It indicates the direction of turn.
Matters of Caution Regarding Safety
I

To prevent accidents due to electric shock, turn off power supply if it is necessary to
open the electrical equipment box. For added precaution, open the lid of the box only
after a lapse of more than five minutes.
DANGER
Basic Matters of Precaution
1. Be sure to read all documents included in this Manual and the attached booklet
before using this machine. Also, keep this Manual carefully so as to be able to
read it whenever necessary.
2. Contents of this Manual include items that are not included in specifications of the
machine purchased.
3. The machine should be operated only by the operator who has learned how to run
it.
4. Regarding the repair or maintenance (excluding daily inspection and other matters
specified in the Manual), ask our company or its agent to do it.
5. General maintenance, inspection, and repair (matters specified in this Manual) shall
be conducted only by specialized maintenance engineers who have finished the
maintenance course specified by our company.
With regard to repair (matters specified in this Manual), use genuine parts of our
company.
Safety Equipment, Alarm Label
1. In order to prevent accidents due to nonpresence of safety equipment, start to
operate this machine only after confirming that the equipment is suitably installed at
the specified position.
2. If the safety equipment is dismantled, be sure to attach it to its original position, and
confirm that it operates normally.
3. Make sure that the warning label stuck to the machine will be always clearly visible.
If it has been peeled off or stained, order new labels from our company and
exchange old labels with new ones.
4. If the safety equipment is damaged, remove it. Never operate the machine. If
you operate the machine without the safety equipment, it may lead to severe
accidents involving serious personal injuries or even death.
Application
1. Never use this machine for purposes other than its original application.
Our company will not be responsible in the case of its use for other application.
2. Do not remodel this machine. Our company will not be responsible for any
accident arising as a result of its remodeling.
Operational Training
1. To prevent accidents due to unaccustomed handling, operation of this machine
must be limited to operators who have participated in the operation training
specified by our company and have appropriate knowledge and operating skills.
CAUTION
II

To turn off power supply means to turn off
a power supply switch and then to draw out
a power plug from a receptacle or to
separate the power cable from the supply
side.
Hereinafter the same.
Situations in Which It Is Necessary to Turn Off Power Supply
1. In the case of an abnormality or an accident, or in the event of power failure,
immediately turn off power supply.
2. In order to prevent accidents due to unintended start-up of the machine, carry out
inspection, repair, or cleaning of the machine only after turning off power supply.
3. When drawing out the power supply plug, do it by holding the plug itself, not the
cord.
Matters of Caution at Each of Its Use Stages
Transport
1. When lifting the machine or moving it, take sufficient safety measures so that no
dropping accidents will occur.
Unpacking
1. Read all instructions shown on the transport-use container.
2. Never cut tapes with a cutter.
3. Retain delivery-use materials.
Installation
1. To prevent the occurrence of any accident due to unintended moving of the
machine in operation, make casters float using a height adjuster.
2. Install this machine at a flat position.
3. To prevent the occurrence of electric shock, power leakage, or fires, use attached
products regarding cables, and link them to the specified positions.
4. To prevent electric shock, power leakage, or fires, make sure that irrational force
will be applied to the cables while the machine is in operation.
5. Securely fix the power supply plug and the connector of an I/F cable. When
drawing out the power supply plug or the I/F cable, do it by holding the connector
unit.
Before Operation
1. To prevent accidents to human bodies, make sure before supplying power that
there is no damage, coming off of parts, or loosening of connectors and cables.
2. To prevent bodily accidents, never put in your hand into the driving unit.
CAUTION
III

Greasing
1. Regarding greasing, use Albania Grease.
2. To prevent the occurrence of an inflammation or rash, immediately wash the
related portions if grease adheres to your eyes or other parts of your body.
3. If grease is mistakenly swallowed, immediately consult a physician to prevent
diarrhea or vomiting.
Maintenance
1. To prevent accidents due to unaccustomedness, repair and adjustment shall be
conducted by maintenance engineers who are versed in the machine. In
replacing parts, use genuine parts of our company. We will not assume any
responsibility for an accident due to the use of non-genuine parts.
2. To prevent accidents or electric shock due to unaccustomedness, entrust electrical
repair or maintenance work (including wiring work) to persons versed in electricity,
or ask engineers of our company or its sales company to do it.
3. To prevent accidents due to unintended start-up of the machine, conduct repair or
adjustment only after removing air supply pipes and discharging residual air.
4. To prevent bodily accidents, confirm after such work as repair, adjustment, or parts
replacement that no screws or nuts are loosened.
Use Environment
1. Use the machine in the environment free from effects of noise sources (magnetic
waves), such as high-frequency welders, in order to prevent accidents due to
erroneous actions.
2. In order to prevent accidents due to erroneous actions, use the machine in the
environment where source voltage surpasses 200V (220V, 240V)±10%.
3. In order to prevent accidents due to erroneous actions, do not use the machine in
the environment where the supplied air pressure is 0.5 to 1.0MPa.
4. To ensure safety, use the machine under the following environment:
Ambient temperature during operation + 10°C - +35°C
Relative humidity during operation 50% or less (35°C)
90% or less (20°C)
5. To prevent accidents due to breakdown of electric/electronic parts, turn on power
supply sufficiently after the fear of dew condensation is eliminated, because such
condensation may occur when the machine is rapidly moved from a cold place to a
warm location.
6. To prevent accidents due to breakdown of electric/electronic parts, stop the use of
the machine during lightning, and draw out the power supply plug.
CAUTION
IV

CAUTION Label Sticking Positions
[Front view][Rear view]
CAUTION label
for high voltage
CAUTION label
for movin
g
p
arts
CAUTION label
for getting caught
CAUTION label
for movin
g
p
arts
[Right side view][Left side view]
V

Matters of Caution for Safe Use of
FX-1 Series
DANGER
1. To prevent accidents due to electric shock, do not open the
electrical equipment box while power supply is on.
2. To prevent electric shock, do not operate the machine, with the
grounding line unlinked.
CAUTION
1. To prevent damage to human bodies, do not operate the
machine, with the safety cover or equipment removed.
2. To prevent damage to human bodies, make sure that hair,
clothes, etc., will not be caught by the conveyor chain.
Also, keep off gloves.
3. To prevent damage to human bodies, turn off power supply
during maintenance (greasing, adjustment, and daily inspection).
4. To prevent damage to human bodies, use an earth leakage
breaker for the power line.
CAUTION
1. Windows NT (including the Ethernet communication function) is
adopted as the Operating System of this machine.
If you install on this machine any software not designed for this
machine, we cannot guarantee that the machine functions
properly. if you move, rename or copy a file stored in the
hard disk drive, we cannot guarantee that either.
• Should the machine not properly due to any operation above,
replace your hard disk drive with new one and your data may
be lost.
CAUTION
1. A UPS is incorporated into this machine to protect a production
program and any other data at power failure.
To prevent a battery built into the UPS from degrading, do not
leave this machine without turning it on for six months or longer.
• Only when the main circuit breaker and main switch are set
to ON, this machine is assumed to be turned on.
VI

FX-1/FX-1R Maintenance Manual
CONTENTS
[1] X-Y UNIT.................................................................................................1-1
1-1. Replacing the Timing Belt and Adjusting the Belt Tension....................................1-1
1-1-1. Timing Belt YM..................................................................................................................... 1-1
1-1-2. YB-Belt................................................................................................................................. 1-2
1-1-3. Adjustment Procedure ......................................................................................................... 1-3
1-1-4. Measurement Positions and Specification Values................................................................ 1-3
1-1-5. Adjusting Method ................................................................................................................. 1-4
1-2. Replacing the Pulleys............................................................................................1-5
1-2-1. Replacing the Pulley YA....................................................................................................... 1-5
1-2-2. Replacing the Pulley YM ...................................................................................................... 1-5
1-2-3. Replacing the Pulley YB....................................................................................................... 1-5
1-3. Replacing the Servomotors...................................................................................1-5
1-4. Replacing the Magnescale (For FX-1R, see Section 1-8.) ....................................1-6
1-4-1. X-axis Magnescale Affixing Position (For FX-1R, see Section 1-8-1.) ................................. 1-6
1-4-2. Y-axis Magnescale Affixing Position (For FX-1R, see Section 1-8-2.).................................. 1-7
1-4-3. Gap of Magnescale (For FX-1R, see Section 1-8-4.)........................................................... 1-7
1-5. Replacing the Limit Sensor and the X-Axis Home Position Sensor.......................1-8
1-5-1. Replacing the XL-, XR-, and XC-limit sensors,
XL- and XR-near sensors, XL- and XR-ORG sensors ......................................................... 1-8
1-5-2. Replacing the YB- +/−limit sensors and YB-near sensor...................................................... 1-8
1-6. Replacing the Home Position Sensor....................................................................1-9
1-6-1. Y-Axis................................................................................................................................... 1-9
1-7. Replacing the Plastic Rail ...................................................................................1-10
1-7-1. Replacing the X-Axis Plastic Rail ....................................................................................... 1-10
1-7-2. Replacing the Y-Axis Plastic Rail ....................................................................................... 1-11
1-8. Replacing the magnescale (FX-1R) ....................................................................1-12
1-8-1. X-axis magnescale affixing position (FX-1R) ..................................................................... 1-12
1-8-2. YB-axis magnescale affixing position (FX-1R) ................................................................... 1-13
1-8-3. YA-axis magnescale affixing position (FX-1R) ................................................................... 1-13
1-8-4. Gap of magnescale (FX-1R) .............................................................................................. 1-14
[2] HEAD UNIT.............................................................................................2-1
2-1. Replacing and Adjusting the Head ........................................................................2-1
2-1-1. MNLA Head.......................................................................................................................... 2-1
2-2. Replacing the Motor ..............................................................................................2-4
2-2-1. Z-Motor (MNLA Head).......................................................................................................... 2-4
2-2-2. θ-Motor (MNLA Head) .......................................................................................................... 2-6
i
Rev. 2.00

FX-1/FX-1R Maintenance Manual
2-3. Replacing the Z-Sensor ........................................................................................2-7
2-3-1. MNLA Head.......................................................................................................................... 2-7
2-4. Replacing the Laser Sensor ..................................................................................2-8
2-4-1. Replacing the MNLA ............................................................................................................ 2-8
2-5. Replacing the Head Up Spring..............................................................................2-9
2-5-1. MNLA Head.......................................................................................................................... 2-9
2-6. Replacing the Belts .............................................................................................2-10
2-6-1. MNLA Head........................................................................................................................ 2-10
2-7. Replacing the Spline Housing .............................................................................2-11
2-8. Replacing the Nozzle Outer Shaft Assembly.......................................................2-12
2-9. List of Readjustment Items After Replacement ...................................................2-13
[3] PARTS AROUND THE HEAD .................................................................3-1
3-1. Replacing the Ejector Unit.....................................................................................3-1
3-2. Replacing the Bad Mark Sensor............................................................................3-2
3-2-1. Sensor Assembly .................................................................................................................3-2
3-2-2. Adjusting the Sensor Height................................................................................................. 3-2
3-2-3. Amplifier............................................................................................................................... 3-3
3-2-4. Assembling the Fiber Unit to the Amplifier ........................................................................... 3-3
3-2-5. Setting the Switches on the Bad Mark Sensor Assembly..................................................... 3-3
3-2-6. Running the bad mark sensor cables................................................................................... 3-3
3-2-6. Running the bad mark sensor cables................................................................................... 3-4
3-3. Replacing the HMS ...............................................................................................3-5
3-3-1. Replacing the HMS Head .................................................................................................... 3-5
3-3-2. Replacing the HMS Amplifier ............................................................................................... 3-5
3-3-3. Sticking the Label................................................................................................................. 3-6
3-3-4. Mounting the Board..............................................................................................................3-6
3-3-5. Running the HMS cables ..................................................................................................... 3-7
3-3-6. Adjusting the HMS Height.................................................................................................... 3-9
3-4. Replacing the Head Board ..................................................................................3-10
3-4-1. Replacing the Head Main Board ........................................................................................ 3-10
3-4-2. Replacing the Sensor Relay Board Assembly.................................................................... 3-11
[4] OCC ASSEMBLY ....................................................................................4-1
4-1. Replacing the OCC Assembly...............................................................................4-1
4-2. Replacing the CCD Camera and Lens ..................................................................4-2
4-3. Replacing the OCC Coaxial/Angle Light Board Assemblies..................................4-3
4-4. Replacing the Lens Filter and Light Filter..............................................................4-4
4-5. Adjusting the Focus...............................................................................................4-5
ii
Rev. 2.00

FX-1/FX-1R Maintenance Manual
4-6. Adjusting the OCC Light Quantity .........................................................................4-6
4-7. List of Readjustment Items After Replacement .....................................................4-6
[5] BOARD TRANSPORT UNIT ...................................................................5-1
5-1. Replacing the Transport Belt.................................................................................5-1
5-2. Replacing the Transport Pulley .............................................................................5-2
5-2-1. CONVEYOR PULLEY A: E21117150A0 .............................................................................. 5-2
5-2-2. CONVEYOR PULLEY B: E20897210A0.............................................................................. 5-2
5-3. Replacing the IN and OUT Motors ........................................................................5-3
5-4. Replacing the CENT Motor and AWCC Motor ......................................................5-5
5-5. Adjusting the Width Adjust Link Belt (CENTER)....................................................5-7
5-6. Adjusting the Width Adjust Link Belt (IN/OUT) ......................................................5-8
5-7. Replacing the IN and OUT Sensors ......................................................................5-9
5-8. Replacing the WAIT Sensor and C OUT 2 Sensor..............................................5-10
5-8-1. Replacing the Fiber............................................................................................................ 5-10
5-8-2. Replacing the Amplifier Unit ............................................................................................... 5-11
5-9. Replacing the STOP and C OUT Sensors ..........................................................5-12
5-10. Replacing the Stopper Cylinder...........................................................................5-14
5-11. Replacing the STBL Home Position Sensor........................................................5-15
5-12. Replacing the T-PIN Sensor................................................................................5-16
5-13. Adjusting the Position in the Y-direction (Outer Shape Reference)...................5-17
5-14. Replacing the Check Cylinder (Outer Shape Reference)....................................5-17
5-15. Adjusting the Check Cylinder Speed...................................................................5-18
5-16. Replacing the Centering Pin................................................................................5-19
5-17. Replacing the STBL Motor ..................................................................................5-20
5-17-1. Adjusting the Gap between Torque Supporter and STBL Motor......................................... 5-20
5-17-2. Adjusting the Tension of the STBL Driving Timing Belt ...................................................... 5-21
5-17-3. Placing the Support Table Surface Horizontally ................................................................. 5-21
5-18. Replacing the STBL Encoder ..............................................................................5-22
5-19. Layout of solenoid valves....................................................................................5-23
5-20. Replacing the support pin detection sensor ........................................................5-24
5-21. Replacing the YA-motor ......................................................................................5-25
5-21-1. Replacing the YA-motor ..................................................................................................... 5-25
5-21-2. Adjusting the Z-phase of the YA-ball screw........................................................................ 5-26
[6] CAL BLOCK ............................................................................................6-1
6-1. Replacing the CAL Block Board Assembly............................................................6-1
6-2. Replacing the Ejector ............................................................................................6-2
6-3. Replacing the Vacuum Calibration Sensor............................................................6-3
iii
Rev. 2.00

FX-1/FX-1R Maintenance Manual
[7] ATC .........................................................................................................7-1
7-1. Replacing the Air Cylinder.....................................................................................7-1
7-2. Replacing the ATC OPEN and CLOSE Sensors...................................................7-4
7-3. Adjusting the Speed Controller..............................................................................7-4
[8] FEEDER BANK AND REPLACEMENT TABLE (OPTIONAL).................8-1
8-1. Overall Drawing.....................................................................................................8-1
8-2. Replacing the Drive Cylinder.................................................................................8-2
8-3. Adjusting the Speed Controller of the Drive Cylinder ............................................8-4
8-4. Replacing the Feeder Bank Board and Feeder I/F Board .....................................8-5
8-5. Replacing the Bank-Up Cylinder ...........................................................................8-6
8-6. Adjusting the Speed Controller of the Bank-Up Cylinder
(Optional Replacement Table) ..............................................................................8-7
8-7. Replacing the Bank-Up Detection Sensor (Optional Replacement Table) ............8-8
8-8. Replacing the Selector Switch (Optional Replacement Table) ..............................8-9
8-9. Replacing the Roller Lever (Optional Replacement Table) .................................8-10
[9] PNEUMATIC UNITS ...............................................................................9-1
9-1. Replacing the Main Pressure Detection Cable Assembly .....................................9-1
9-2. Replacing the Filter Element .................................................................................9-2
[10] SWITCHES ...........................................................................................10-1
10-1. Replacing the Push-Button Switch ......................................................................10-1
10-2. Replacing the EMERGENCY STOP Switch ........................................................10-3
10-3. Replacing the Cover Open Switch ......................................................................10-5
10-3-1. Switch Main Unit ................................................................................................................ 10-5
10-3-2. Operation Key .................................................................................................................... 10-6
[11] REPLACING AND ADJUSTING THE FEEDER FLOAT SENSOR........ 11-1
[12] OTHER UNITS......................................................................................12-1
12-1. Replacing the FDD (Floppy Disk Drive) ..............................................................12-1
12-2. Replacing the CD-ROM Drive .............................................................................12-2
12-3. Replacing the LCD Monitor .................................................................................12-3
12-3-1. Replacing the LCD Monitor ................................................................................................ 12-3
12-3-2. Setting up the touch panel (optional) ................................................................................. 12-4
12-3-3. Replacing the LCD back light............................................................................................. 12-5
12-3-4. Adjusting the LCD .............................................................................................................. 12-6
12-4. Replacing the SSD..............................................................................................12-8
12-4-1. Required Components ....................................................................................................... 12-8
12-4-2. Replacing the HDD ............................................................................................................ 12-9
iv
Rev. 2.00

FX-1/FX-1R Maintenance Manual
12-4-3. Setting up the BIOS ......................................................................................................... 12-10
12-4-4. Setting Up the Network (This setup is performed when communicating with the HLC) ... 12-13
12-4-5. Installing the FX-1-series System Programs and Flexline DB.......................................... 12-31
12-4-6. Changing the WindowsNT Product ID.............................................................................. 12-36
12-4-7 Restoring the C drive to the initial status
(status that the C drive has been updated previously.) .................................................... 12-38
[13] ELECTRICAL COMPONENTS .............................................................13-1
13-1. Layout of Electrical Components.........................................................................13-1
13-1-1. Part Names ........................................................................................................................ 13-1
13-2. Layout of Top of Base Frame..............................................................................13-2
13-2-1. Part Names ........................................................................................................................ 13-2
13-3. Power Supply Unit...............................................................................................13-3
13-3-1. Structure of Power Supply Unit .......................................................................................... 13-3
13-4. Control Unit .........................................................................................................13-6
13-4-1. Structure of Control Unit..................................................................................................... 13-6
13-4-2. CPU Board (40003280) ..................................................................................................... 13-8
13-4-3 Position board (12-axis: L901E621000, 24-axis: L901E721000) ....................................... 13-9
13-4-4. Bus Bridge Board (40003313).......................................................................................... 13-10
13-4-5. MCM (Multi Nozzle Control Module) Board (E9609729000) .............................................13-11
13-4-6. SAFETY Board (40007368) ............................................................................................. 13-12
13-4-7. BASE FEEDER Board Assembly (40007370).................................................................. 13-14
13-4-8. I/O Control Board (40001943).......................................................................................... 13-16
13-4-9. Light Ctrl Board (40001918)............................................................................................. 13-18
13-4-10. IP-X3 Board (40001920) .................................................................................................. 13-19
13-4-11. POS-CNN board (40007372) ........................................................................................... 13-21
13-4-12. SCALE-I/F board (40013604) .......................................................................................... 13-21
13-5. X-Y Unit.............................................................................................................13-22
13-5-1. Structure of X-Y Unit ........................................................................................................ 13-22
13-5-2. XY-Axis Driver Indication Display..................................................................................... 13-23
13-5-3. Scale I/F Unit ................................................................................................................... 13-23
13-5-4. Magnescale detector (Used in FX-1; not used in FX-1R)................................................. 13-24
13-6. Z-θUnit .............................................................................................................13-25
13-6-1. Structure of Z-θUnit......................................................................................................... 13-25
13-6-2. LED Indications................................................................................................................ 13-26
13-7. Transport Unit ...................................................................................................13-27
13-7-1. Structure of Transport Unit ............................................................................................... 13-27
13-7-2. Adjusting the CONVEYOR Board .................................................................................... 13-28
13-7-3. Adjusting the Stepping Driver........................................................................................... 13-29
v
Rev. 2.00

FX-1/FX-1R Maintenance Manual
13-7-4. Thermal sensor board...................................................................................................... 13-31
13-8. Head Unit ..........................................................................................................13-32
13-8-1. Boards Used on the Head Unit ........................................................................................ 13-32
13-8-2. Adjusting the Boards of the Head Unit ............................................................................. 13-33
13-9. Covers...............................................................................................................13-35
13-9-1. Structure of Operation Unit .............................................................................................. 13-35
13-9-2. Jumper Settings of OPERATION PCB ASM (40012048) ................................................. 13-35
13-9-3. Mounting the Switches on the OPERATION SW PCB ASM............................................. 13-36
13-9-4. Jumper switch settings of operation sw PCB ASM (40012050) ....................................... 13-40
13-10. UPS (40003292) ...............................................................................................13-41
13-10-1. Checking the UPS Battery (E9659729A000) Voltage ...................................................... 13-41
13-10-2. Replacing the UPS Battery .............................................................................................. 13-42
13-11. HOD ..................................................................................................................13-45
13-11-1. Adjusting the light quantity of the HOD LCD .................................................................... 13-45
13-11-2. Replacing the HOD LCD .................................................................................................. 13-46
13-12. BANK/FPI-F(R) board assembly .......................................................................13-48
[14] AUTO BOARD WIDTH ADJUSTMENT.................................................14-1
14-1. Assembling the AWC Bracket .............................................................................14-1
14-2. Assembling to the Machine Main Unit .................................................................14-2
14-2-1. Mounting the AWC Bracket Assembly................................................................................ 14-2
14-3. Mounting the Origin Switch Dog..........................................................................14-3
14-4. Running the cables and setting up the driver ......................................................14-4
[15] FEEDER POSITION INDICATOR (FPI)................................................15-1
15-1. Detaching the FPI from the Machine Main Unit...................................................15-1
15-2. Structure of components inside FPI ....................................................................15-2
[16] FX-1 JIG LISTS.....................................................................................16-1
Note) The YA-axis described in this manual is equivalent to the Y-TBL-axis.
vi
Rev. 2.00

FX-1/FX-1R MaintenanceManual
DANGERTo prevent any trouble caused by accidental machine start, always
shut-down the power before starting the maintenance and
adjustment work.
[1] X-Y UNIT
1-1. Replacing the Timing Belt and Adjusting the Belt Tension
1-1-1. Timing Belt YM
(1) Remove the pulley cover.
(2) Remove the timing belt YB. (See section 1-1-2.)
(3) Loosen the SL6062592TN.
(4) Loosen the tension of the timing belt YM using the SM6085502TS.
(5) Loosen the SL6062592TN and replace the YA-pulley bracket assembly.
(It is impossible to replace only the timing belt YM. Always replace the YA-pulley bracket
assembly.)
∗Apply Loctite 277 to the SL6062092TN fixing the YB-belt joint and tighten it firmly.
(6) Reassemble the components in the reverse order of disassembly. Adjust the tension levels of
the timing belt YM and YB-belt.
(See the adjustment procedure on page 1-3.)
YBL-MOTOR ASM: L808E3210A0
YBR-MOTOR ASM: L808E2210A0
Chassis, Y-axis frame
YA-pulley bracket
blyassem
YA-PULLEY BRACKET L ASM:
L142E0210A0
YA-PULLEY BRACKET R ASM:
L142E1210A0
Figure 1-1-1-1
1-1
Rev. 2.00

FX-1/FX-1R MaintenanceManual
1-1-2. YB-Belt
To make the work efficient, remove the side cover. Remove the side cover mounting screws to pull
out the cover.
(1) Remove the SL6063092TN fixing the YB-belt joint to the X-beam end.
(2) Loosen the SL6062092TN fixing the YB-pulley bracket assembly.
(3) Loosen the SM6084002TN to detach the YB-pulley bracket assembly.
(4) Remove the SL6041292TN fastening the YB-belt to replace the YB-belt.
(5) Reassemble the components in the reverse order of disassembly.
Apply Loctite 277 to the SL6062092TN fixing the YB-belt joint and tighten it firmly.
(6) Adjust the tension of the YB-belt. (See the next page.)
From X-beam end
YB-BELT: 40000732
Figure 1-1-2-1
YB-PULLEY BRACKET L ASM: L140E4210A0
YB-PULLEY BRACKET R ASM: L140E5210A0
Chassis, Y-axis frame
Figure 1-1-2-2
1-2
Rev. 2.00

FX-1/FX-1R MaintenanceManual
1-1-3. Adjustment Procedure
(1) Make measurements with a Yunitta's tension meter placed at the positions indicated by the
arrows in the figure below and check to make sure that the values are within the specification
value range.
(Note 1) Measure the belt tension by tapping the center of the belt with a stick. At this
time, put the microphone so that it receives the vibration produced at the center
of the belt in the width direction. (When receiving the vibration produced at both
ends, the measured value may become 30N larger than that obtained at the
center. Strictly observe this point.)
(Note 2) Since the tension of the X- or Y-motor belt may vary depending on the
orientation of the motor pulley, measure the tension at the position shown in
Figure 1-1-4-2.
(2) Tension meter input values Table 1-1-3-1
Belt type Belt unit weight
(g/m･mm) Belt width
(mm) Belt span (mm)
Timing belt YM 2.5 40 93
YB belt 3.8 70 988
1-1-4. Measurement Positions and Specification Values
(1) Measure the belt tension at the positions shown in the figure below.
1-3
Figure 1-1-4-1 Figure 1-1-4-2
Table 1-1-4-1
Belt type Factory default setting Readjustment on market
YB BELT 1100 ±50N 800N or more
TIMING BELT YM 290 ±50N 160N or more
Measure and adjust the tension at the setscrew
position A or B.
Pulley set screw
position B
Pulley set screw
position A
Front
Y-belt
Y-belt
Rear
Y-axis
X-motor belt
Rev. 2.00

FX-1/FX-1R MaintenanceManual
1-1-5. Adjusting Method
(1) Timing belt YM
1. Loosen the SL6062592TN fixing the YB-motor bracket.
2. Adjust the tension using the SM6085502TN.
3. Tighten the SL6062592TN firmly
YBL-MOTOR ASM: L808E3210A0
YBR-MOTOR ASM: L808E2210A0
YA-PULLEY BRACKET L ASM:
L142E0210A0
YA-PULLEY BRACKET R ASM:
L142E1210A0 Chassis, Y-axis frame
Figure 1-1-5-1
(2) YB belt
1. Loosen the SL6062092TN fixing the YB-pulley bracket.
2. Adjust the tension using the SM6084002TN.
3. Tighten the SL6062092TN firmly
YB-BELT: 40000732
YB-PULLEY BRACKET L ASM: L140E4210A0
YB-PULLEY BRACKET L ASM: L140E5210A0
Chassis, Y-axis frame
Figure 1-1-5-2
1-4
Rev. 2.00

FX-1/FX-1R MaintenanceManual
1-2. Replacing the Pulleys
1-2-1. Replacing the Pulley YA
(1) Carry out the replacement work in the same manner as for the timing belt YM in 1-1-1.
1-2-2. Replacing the Pulley YM
(1) Carry out the replacement work in the same manner as for the timing belt YM in 1-1-1.
1-2-3. Replacing the Pulley YB
(1) Carry out the replacement work in the same manner as for the timing belt YB in 1-1-2.
1-3. Replacing the Servomotors
(1) Carry out the replacement work in the same manner as for the timing belt YM in 1-1-1.
1-5
Rev. 2.00

FX-1/FX-1R MaintenanceManual
1-4. Replacing the Magnescale (For FX-1R, see Section 1-8.)
(1) Detach the magnescale head from the bracket.
(2) Detach the old magnescale.
(3) Degrease the magnescale mounting surface and magnescale completely.
Note 1: Before replacing the magnescale, leave a new magnescale near the machine for
1 hr. or longer so that its temperature becomes the same as that of the machine.
Note 2: It is recommended to use "Mechafine Mate" for the degreasing agent.
Note 3: Horizontal deviation amount of the magnescale to the specification value:
± 0.1mm or less
Note 4: Before replacing the Y-axis magnescale, paint it evenly with a black oil felt pen.
1-4-1. X-axis Magnescale Affixing Position (For FX-1R, see Section 1-8-1.)
(1) Put the φ4-parallel pin at eight locations of the X-beam.
(2) Affix the magnescale with the φ4-parallel pins used as guide.
φ4-parallel pin
Magnescale
Figure 1-4-1-1
1-6
Rev. 2.00