JUKI FX-3R Operating manual

High-Speed Modular Mounter
FX-3R
MAINTENANCE GUIDE
JUKI CORPORATION
CUSTOMER SUPPORT DEPARTMENT
ELECTRONIC ASSEMBLY SYSTEMS BUSINESS UNIT

(1) No part of this document may be copied or reproduced without the prior permission of
JUKI Corporation. (Including software and program)
(2) The contents of this document are subject to change without notice.
(3) This manual is prepared with extreme care. However, if you have any question or find
any error or omission in writing, contact our dealer or JUKI Corporation.
(4) JUKI Corporation shall disclaim all the responsibility for any trouble resulting from the
user's abnormal operation regardless of Item (3).
(5) Windows is a registered trademark of Microsoft Corporation USA.
The company names and product names mentioned in this document are generally registered
trademarks or trademarks of the respective companies.
Important

FX-3R Maintenance Guide
i
Rev. 1.00
[1] X-Y UNIT.................................................................................................1-1
1-1. Replacing the Magnescale .....................................................................................1-1
1-1-1. X-Axis Magnescale Affixing Position.................................................................................... 1-2
1-1-2. Y-Axis Magnescale Affixing Position.................................................................................... 1-3
1-1-3. Clearance of the Magnescale .............................................................................................. 1-4
1-1-4. Re-obtaining the Parameters after Replacement of the Magnescale................................... 1-4
1-2. Replacing the Limit Sensor and Origin Near Sensor ..............................................1-5
1-2-1. Replacing the X+/−Limit Sensor and X-Near Sensor .......................................................... 1-5
1-2-2. Replacing the Y +Limit Sensor and YB-Near Sensor........................................................... 1-6
1-2-3. Replacing the X-axis Interference Sensor (Y-C Sensor)...................................................... 1-7
1-3. Replacing the Cable Bear.......................................................................................1-8
1-3-1. Replacing the X-Axis Cable Bear......................................................................................... 1-8
1-3-2. Replacing the Y-Axis Cable Bear......................................................................................... 1-9
1-4. Replacing the Roller Lubrication Part ...................................................................1-10
[2] HEAD UNIT.............................................................................................2-1
2-1. Replacing and Adjusting the Head .........................................................................2-1
2-2. Replacing the Motor ...............................................................................................2-7
2-2-1. Replacing the Z-Motor ......................................................................................................... 2-7
2-2-2. Replacing the θ-Motor.......................................................................................................... 2-9
2-3. Replacing the Laser Sensor (LNC60)...................................................................2-10
2-4. Replacing the Head Up Cylinder ..........................................................................2-11
2-5. Replacing the Belts...............................................................................................2-12
2-5-1. Replacing the Timing Belt Z ............................................................................................... 2-12
2-5-2. Replacing the Timing Belt θ............................................................................................... 2-12
2-6. Replacing the Z-Slide Shaft ..................................................................................2-13
2-7. Readjustment After Replacement of Head Unit ....................................................2-14
[3] PARTS AROUND THE HEAD .................................................................3-1
3-1. Replacing the Solenoid Valves ...............................................................................3-1
3-2. Replacing the Filter.................................................................................................3-3
3-3. Replacing the Bad Mark Sensor .............................................................................3-4
3-3-1. Sensor Assembly .................................................................................................................3-4
3-3-2. Adjusting the Sensor Height................................................................................................. 3-5
3-3-3. Amplifier............................................................................................................................... 3-5
3-3-4. Assembling the Fiber Unit to the Amplifier ........................................................................... 3-6
3-3-5. Amplifier Setting................................................................................................................... 3-7
3-3-6. Manual Setting Method for the F70R Fiber Sensor Amplifier............................................... 3-8
3-4. Replacing the HMS.................................................................................................3-9

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Rev. 1.00
3-4-1. Replacing the HMS Head .................................................................................................... 3-9
3-4-2. Replacing the Amplifier ........................................................................................................ 3-9
3-4-3. Sticking the Label............................................................................................................... 3-10
3-4-4. Adjusting the HMS Height.................................................................................................. 3-10
3-5. Replacing the Head Board ...................................................................................3-11
3-5-1. Replacing the Head Main Board ........................................................................................ 3-11
3-6. Replacing the ZT-Driver Board .............................................................................3-12
3-6-1. Replacing the ZT-Driver Board .......................................................................................... 3-12
[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........................................................................................4-4
4-5. Adjusting the Focus ................................................................................................4-6
4-6. Adjusting the OCC Light Quantity...........................................................................4-7
4-7. Replacing the Solder Recognition Light Board .......................................................4-8
4-8. Readjustment After Replacement of OCC Unit.......................................................4-9
[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. Transport Pulley A Assembly: E21117150A0 ...................................................................... 5-2
5-2-2. Transport Pulley B Assembly: E20897210A0 ...................................................................... 5-2
5-3. Replacing the STATION, IN, OUT, and JOINT Motors...........................................5-3
5-4. Replacing the IN and OUT Sensors .......................................................................5-4
5-5. Replacing the WAIT, STOP, and C-OUT Sensors..................................................5-5
5-5-1. Replacing the Fiber.............................................................................................................. 5-5
5-5-2. Replacing the Amplifier Unit................................................................................................. 5-5
5-5-3. Adjusting the Sensitivity of the WAIT/STOP/C-OUT Sensor................................................ 5-7
5-6. Replacing the Stopper Cylinder ............................................................................5-10
5-7. Replacing the Support Table Home Position Sensor
(BU Home Position Sensor)..................................................................................5-11
5-8. Replacing the T-PIN Sensor (Optional) ................................................................5-11
5-9. Replacing the Pusher Y Cylinder (Outer Shape Reference).................................5-12
5-10. Replacing the Centering Pin (Optional) ................................................................5-13
5-11. Replacing the Support Table Motor (BU Motor)....................................................5-14
5-11-1. Adjusting the Gap between Torque Supporter and Support Motor ...................................... 5-15
5-11-2. Adjusting the Tension of the Support Table Driving Timing Belt ........................................ 5-15
5-11-3. Placing the Support Table Surface Horizontally................................................................. 5-15

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Rev. 1.00
5-12. Replacing the Support Table ENC........................................................................5-17
5-13. Replacing the Backup Stopper (for EN Type Only) ..............................................5-18
5-14. Auto PWB Width Adjustment................................................................................5-21
5-14-1. Replacing the AWC Motor.................................................................................................. 5-21
5-14-2. Replacing the AWC Origin Sensor..................................................................................... 5-22
5-14-3. Replacing the Transport Stopper Interference Sensor....................................................... 5-22
5-15. Replacing the Barcode Reader (On-Demand Production, Option for SCS)..........5-23
[6] CAL BLOCK ............................................................................................6-1
6-1. Replacing the CAL Board Assembly.......................................................................6-1
[7] ATC .........................................................................................................7-1
7-1. Replacing the Air Cylinder ......................................................................................7-1
7-2. Replacing the ATC OPEN and CLOSE Sensors ....................................................7-2
7-3. Adjusting the Speed Controller ...............................................................................7-3
[8] FEEDER BANK, REPLACEMENT TABLE AND ELECTRIC BANK
(OPTIONAL) ...........................................................................................8-1
8-1. Common Parts and Units for Mechanical Feeder and Electric Feeder ...................8-1
8-1-1. Replacing the Bank-Up Cylinder .......................................................................................... 8-1
8-1-2. Adjusting the Speed Controller of the Bank-Up Cylinder (Optional Replacement Table)..... 8-2
8-1-3. Replacing the Bank-Up Detection Sensor (Optional Replacement Table) ........................... 8-2
8-1-4. Replacing the Selector Switch (Optional Replacement Table)............................................. 8-3
8-1-5. Replacing the Roller Lever (Optional Replacement Table) .................................................. 8-3
8-1-6. Replacing the Cables and Connectors of Replacement Table (For Intelli trolley) ................ 8-4
8-1-7. Replacing the Antenna of the Replacement Table (For Intelli trolley) .................................. 8-6
8-2. Bank and Replacement Table for Mechanical Feeder............................................8-8
8-2-1. Overall Drawing ................................................................................................................... 8-8
8-2.2. Replacing the Drive Cylinder................................................................................................ 8-9
8-2-3. Adjusting the Speed Controller of the Drive Cylinder ......................................................... 8-10
8-2-4. Replacing the Feeder Bank Board (Optional) .................................................................... 8-10
8-2-5. Replacing the Bank PCB ................................................................................................... 8-11
8-3. Replacement Table for Electric Feeder ................................................................8-12
8-3-1. Overall Drawing (Replacement Table for ETF) .................................................................. 8-12
8-3-2. Overall Drawing (Lifter Unit)............................................................................................... 8-14
8-3-3. Replacing the Bank PCB ................................................................................................... 8-15
8-3-4. Replacing the Connector Cable ......................................................................................... 8-16
8-3-5. Replacing the Connector for Off-line Setup ....................................................................... 8-17
8-3-6. Replacing the ETF Incorrect Insertion Detection Sensor ................................................... 8-18
8-4. Electric Fixed Bank (Optional) ..............................................................................8-21
8-4-1. Overall Drawing .................................................................................................................8-21

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Rev. 1.00
8-4-2. Replacing the Outer Bank PCB and Connector Cable....................................................... 8-23
8-4-3. Replacing the Connector for Off-line Setup ....................................................................... 8-23
8-4-4. Replacing the ETF Incorrect Insertion Detection Sensor ................................................... 8-23
[9] PNEUMATIC UNITS ...............................................................................9-1
9-1. Replacing the Digital Pressure Switch (Positive Pressure).....................................9-1
9-1-1. Adjusting the Digital Pressure Switch (Positive Pressure) ................................................... 9-1
9-2. Replacing the Filter Element...................................................................................9-3
9-3. Replacing the Digital Pressure Switch (Negative Pressure) ...................................9-4
9-3-1. Adjusting the Digital Pressure Switch (Negative Pressure).................................................. 9-4
9-4. Replacing the Vacuum Pump Parts........................................................................9-6
[10] SWITCHES ...........................................................................................10-1
10-1. Replacing the Push-Button Switch .......................................................................10-1
10-2. Replacing the EMERGENCY STOP Switch .........................................................10-2
10-3. Replacing the Cover Open Switch........................................................................10-3
10-3-1. Switch Main Unit ................................................................................................................ 10-3
10-3-2. Operation Key .................................................................................................................... 10-4
10-4. Replacing the Push-Button Switch (CE Marking Machine)...................................10-5
[11] REPLACING AND ADJUSTING THE FEEDER FLOAT SENSOR........ 11-1
[12] OTHER UNITS......................................................................................12-1
12-1. LCD Monitor .........................................................................................................12-1
12-1-1. Replacing the LCD Monitor ................................................................................................ 12-1
12-1-2. Setting Up the Touch Panel (TECNART, TM150-JDA03).................................................. 12-2
12-2. Replacing the System Disk...................................................................................12-4
12-2-1. Replacing the SSD............................................................................................................. 12-4
12-2-2. Setting Up the BIOS........................................................................................................... 12-6
12-2-3. Setting Up the Network (This setup is required when communicating with the IS.) ......... 12-11
12-2-4. Installing the FX-3R System Programs and Flexline DB.................................................. 12-21
12-2-5. Upgrading the FX-3R System Version ............................................................................. 12-32
12-3. HUB-BOX (RFID Applicable Option) ..................................................................12-37
[13] ELECTRICAL COMPONENTS .............................................................13-1
13-1. Layout of Electrical Components ..........................................................................13-1
13-2. Layout of Top of Base Frame ...............................................................................13-2
13-3. Power Supply Unit ................................................................................................13-2
13-3. Power Supply Unit ................................................................................................13-3
13-3-1. Structure of Power Supply Unit .......................................................................................... 13-3
13-4. Control Unit.........................................................................................................13-16
13-4-1. Structure of Control Unit .................................................................................................. 13-16

FX-3R Maintenance Guide
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Rev. 1.00
13-4-2. CPU Board (40107372) ................................................................................................... 13-17
13-4-3. Position Board (40044540) .............................................................................................. 13-18
13-4-4. cPCI-8994 Board (40048003) .......................................................................................... 13-19
13-4-5. ETHER-MAIN Board (40048066)..................................................................................... 13-20
13-4-6. IP-X5 Board Assembly (40047528).................................................................................. 13-21
13-4-7. MOUSE/KEYBOARD Selector (40003281)...................................................................... 13-22
13-4-8. SUPERIMPOSE Board (40048082)................................................................................. 13-24
13-4-9. ATX Power Supply (40048006)........................................................................................ 13-26
13-4-10. Battery Unit (40048007) ................................................................................................... 13-28
13-5. X-Y Unit ..............................................................................................................13-30
13-5-1. Structure of X-Y Unit ........................................................................................................ 13-30
13-5-2. Display Indication of XY Servo Amplifier.......................................................................... 13-31
13-6. Z-θUnit...............................................................................................................13-32
13-6-1. Structure of Z-θUnit......................................................................................................... 13-32
13-6-2. LED Indications................................................................................................................ 13-33
13-7. Transport Unit.....................................................................................................13-34
13-7-1. Structure of Transport Unit............................................................................................... 13-34
13-7-2. Adjusting the BASE-CARRY Board (40047559) .............................................................. 13-44
13-7-3. Adjusting the Stepping Driver........................................................................................... 13-44
13-8. Head Unit............................................................................................................13-47
13-8-1. Adjusting the Boards of the Head Unit ............................................................................. 13-47
13-9. Covers ................................................................................................................13-49
13-9-1. Structure of Operation Unit .............................................................................................. 13-49
13-9-2. Jumper Switch Settings on the Operation Board Assembly............................................. 13-49
13-9-3. Mounting Switches onto the Operation Switchboard........................................................ 13-51
13-10. Replacing the Fuse of the AC Input Unit ............................................................13-58
13-11. Other Boards ......................................................................................................13-59
13-11-1. XY-RELAY Board (40047558) ......................................................................................... 13-59
13-11-2. FEEDER Board (40047560)............................................................................................. 13-61
13-12. Adjusting the Dial of the Vacuum Pump Electromagnetic Switch
(Thermal Protector) ............................................................................................13-62
[14] FEEDER POSITION INDICATOR (FPI)................................................14-1
14-1. Detaching the FPI (Front) from the Machine Main Unit ........................................14-1
[15] TAPE CUTTER (OPTIONAL)................................................................15-1
15-1. Overall Drawing ....................................................................................................15-1
15-1-1. Tape Cutter for Electric Fixed Bank Specification .............................................................. 15-2
15-2. Replacing the Tape Cutter Main Unit....................................................................15-3
15-2-1. Assembling and Adjusting the Lower Discharge Guide ..................................................... 15-8

FX-3R Maintenance Guide
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Rev. 1.00
15-3. Replacing the Movable Cutter Blade (Bottom Blade) of the Tape Cutter............15-10
15-4. Replacing the Fixed Cutter Blade (Upper Blade) of the Tape Cutter ..................15-12
15-5. Grease up...........................................................................................................15-13
[16] FX-3R JIG LISTS ..................................................................................16-1

FX-3R Maintenance Guide
1-1
DANGER
To prevent any trouble caused by accidental machine start, always
shut-down the power before starting the maintenance and
adjustment work.
The XY-axis uses a very strong magnet.
•Do not put any metallic object close to the magnet surface. Once the
magnet attracts a metallic object, this object cannot be removed due to
strong magnetic force.
•Before starting the maintenance work, take off precision portable devices,
such as a wrist watch from your body.
•Do not allow personnel who uses a precision medical device, such as an
artificial cardiac pacemaker, etc to carry out the maintenance work.
[1] X-Y UNIT
1-1. Replacing the Magnescale
(1) Detach the magnescale head from the bracket.
(2) Peel off the old magnescale.
(3) Degrease the magnescale mounting surface and magnescale completely.
Note 1: Before replacing the magnescale, put the magnescale near the machine and leave
it for 1 hr. or longer to make the temperature of the magnescale similar to that of the
machine.
Note 2: “Mecha fine mate” is recommended for the degreasing agent.
Note 3: Deviation amount when compared to the specified value of the magnescale in the
X-direction:
± 0.1 mm or less.
Note 4: Do not put any magnet, such as magnetized screwdriver or support pin close to the
magnescale. Doing so may cause the magnescale to malfunction.
Note 5: The magnescale has a correct orientation. Affix it in the direction shown in the figure
below.
LR RR
LF RF
40091396
40048080（For XL）
Magnescale Y
40048026
Magnescale X
(∗S/N: Serial No. of the magnescale)
Figure 1-1-1 Affixing Orientation of the Magnescale (Main Body Top View)
Rev. 1.00

FX-3R Maintenance Guide
1-2
Rev. 1.00
1-1-1. X-Axis Magnescale Affixing Position
(1) Affix the magnescale while guiding it using the X_MSC install jig.
The affixing starting line for the LF/RF is indicated by the mark-off line on the left side when
viewed from the front and that for the LR/RR is indicated by the mark-off line on the left when
viewed from the rear.
Adjust the position of the Z-phase marking on the magnescale side to the mark-off line, and
then affix the magnescale.
Specification value: Magnescale affixing position (Displacement in the direction parallel with the
head movement) ±0.1mm
Figure 1-1-1-1 Mounting Example of X_MSC Install Jig
40069368
X_MSC install jig
Magnescale

FX-3R Maintenance Guide
1-3
Rev. 1.00
1-1-2. Y-Axis Magnescale Affixing Position
(1) Affix the magnescale while aligning the center portion with the top surface of the Y-frame C and
its side surface with the rail side surface of the Y-frame S.
Specification value: Magnescale affixing position (Displacement in the direction parallel with the
head movement) ±0.1mm
Figure 1-1-2-1 Y-Axis Magnescale Affixing Position
(Left Figure shown above: Y-frame C, Right Figure shown above: Y-frame S)
Y-frame C
Y-frame S
Alignment with
this surface Alignment with
this surface
Label side
72±１mm
Figure 1-1-2-2 Y-frame C Affixing Position Figure 1-1-2-3 Y-frame S Affixing Position
115±1mm
Label side

FX-3R Maintenance Guide
1-4
1-1-3. Clearance of the Magnescale
(1) Loosen the screws fixing the sensor and put the clearance jig with a thickness of 0.25 mm in
the clearance between the magnescale and sensor head.
(2) Tighten the set screws of the sensor head to remove the clearance jig with a thickness of
0.25±0.1 mm.
0.25±0.1mm
Figure 1-1-3-1 X-Axis Side
0.25 ±0.1 mm
0.25 ±0.1 mm
Y-frame C
Y-frame S
Figure 1-1-3-2 Y-Axis Side
1-1-4. Re-obtaining the Parameters after Replacement of the Magnescale
Follow the work steps stated in section 2.3, Y Setup of the MS parameters to obtain the offset
amount of the right origin position to the left origin position.
Make the correction so that the machine status becomes the factory-settings.
∗“Y Setup”operation is performed based on the preconditions that the mechanical squareness
has been adjusted completely.
If the mechanical squareness deviates, it is necessary to adjust the mechanical squareness.
(See “X/Y Unit” in the QA Table.)
Rev. 1.00

FX-3R Maintenance Guide
1-5
1-2. Replacing the Limit Sensor and Origin Near Sensor
(1) When replacing only the sensor, it is not necessary to adjust the position.
(2) When replacing the sensor together with the bracket, it is necessary to adjust the position.
∗The home position of the X-axis is the Z-phase of the magnescale. Therefore, there is no home
position sensor for the X-axis.
1-2-1. Replacing the X+/−Limit Sensor and X-Near Sensor
X NEAR SENSORX +LIMIT SENSOR
(X -LIMIT SENSOR is located on
the right of the X-axis.)
Figure 1-2-1-1 Adjusting the Sensors on the X-Axis
(1) When the distance between each rubber stopper and the XM base A (or B) becomes 5 mm,
make the adjustment so that each limit sensor is turned ON, and then secure each limit sensor
with the screws.
Rev. 1.00

FX-3R Maintenance Guide
1-6
1-2-2. Replacing the Y +Limit Sensor and YB-Near Sensor
(1) When the distance between each rubber stopper and the Y linear base becomes 5 mm, make
the adjustment so that each limit sensor is turned ON, and then secure each limit sensor with
the screws.
YB NEAR SENSOR
Y LINEAR BASE Y +LIMIT SENSOR
(Since two X-beams are provided on
the Y-axis, Y +LIMIT SENSOR is
mounted at two locations.)
RUBBER STOPPER
Figure 1-2-2-1 Replacing the Y +Limit Sensor and YB-Near Sensor
Rev. 1.00

FX-3R Maintenance Guide
1-7
Rev. 1.00
1-2-3. Replacing the X-axis Interference Sensor (Y-C Sensor)
(1) When the distance between each rubber stopper and the Y linear base becomes 5 mm, make
the adjustment so that each limit sensor is turned ON, and then secure each limit sensor with
the screws.
Figure 1-2-3-1 Replacing the X-axis Interference Sensor (Y-C Sensor)
Interference Sensor (Y-C Sensor)
Y-limit bracket YY
Y-limit dog
Y-linear base
Y-linear base
Clearance: 0.8 to 1.5
(Target value: 1.0 mm)
Figure when viewed
from opposite side
Y-linear base
Rubber stopper
Switch is turned
ON at a distance
of 5 mm.

FX-3R Maintenance Guide
1-8
1-3. Replacing the Cable Bear
1-3-1. Replacing the X-Axis Cable Bear
(1) Remove the screws and hexagon nuts fixing the X-cable bear.
(2) Open the flap of the X-cable bear, disconnect the cables, and replace the cable bear.
(3) Apply the grease evenly to four surfaces inside the cable bear.
(The reference applying amount is that whitish grease can be checked.)
(4) Reassemble the parts and components in the reverse order of disassembly. At this time, pay
special attention so that any cables are not entangled inside the cable bear.
∗After the grease has been applied, check the cables in the cable bear. When necessary, apply
the grease again.
GERALYN grease (MGREAS400GA)
SL3061232TN
Washer assembled
round screw, M6 ×12 NM6060001SC
Hexagon nut M6
40046786
X-cable bear
Figure 1-3-1-1 X-Axis Cable Bear
Rev. 1.00

FX-3R Maintenance Guide
1-9
1-3-2. Replacing the Y-Axis Cable Bear
(1) Remove the screws and hexagon nuts fixing the Y-cable bear.
(2) Open the flap of the Y-cable bear, disconnect the cables, and replace the cable bear.
(3) Apply the grease evenly to four surfaces inside the cable bear.
(The reference applying amount is that whitish grease can be checked.)
(4) Reassemble the parts and components in the reverse order of disassembly. At this time, pay
special attention so that any cables are not entangled inside the cable bear.
∗After the grease has been applied, check the cables in the cable bear. When necessary, apply
the grease again.
GERALYN grease (MGREAS400GA)
40046709
Y-cable bear
SL6061292TN
SEMS cap bolt with washer M6 ×12
Figure 1-3-2-1 Y-Axis Cable Bear
Rev. 1.00

FX-3R Maintenance Guide
1-10
1-4. Replacing the Roller Lubrication Part
(1) Remove the screws that secure the lubrication unit.
(2) Insert a precision screwdriver (−) into the portion
indicated by an arrow shown in the Fig. on the right
to detach the lubrication part from the bracket.
Lubrication unit
Fixing screw
Scraper
(3) Prepare a new lubrication part. Fit the spring part to the lubrication part and assemble it into the
bracket.
Lubrication part (replacement part)
Spring part (replacement part)
Bracket
Surface A
(4) To assemble the lubrication part, make the surface shown in the Fig. on the right in step (2) and
press-fit the lubrication part while applying the force to the surface A.
(5) Assemble the lubrication unit and scraper into the roller using the fixing screws.
Adjust the position so that the clearance between the scraper part and roller traveling surface is
0.1 to 0.2 mm, and then tighten the screws firmly.
Rev. 1.00

FX-3R Maintenance Guide
2-1
DANGER
To prevent any trouble caused by accidental machine start, always
shut-down the power before starting the maintenance and
adjustment work.
The XY-axis uses a very strong magnet.
•Do not put any metallic object close to the magnet surface. Once the
magnet attracts a metallic object, this object cannot be removed due to
strong magnetic force.
•Before starting the maintenance work, take off precision portable devices,
such as a wrist watch from your body.
•Do not allow personnel who uses a precision medical device, such as an
artificial cardiac pacemaker, etc to carry out the maintenance work.
[2] HEAD UNIT
2-1. Replacing and Adjusting the Head
∗This section describes an example that uses the head of the LF-device. This description also
applies to other heads.
∗Tie-up bands need to be cut during the maintenance work. However, this work step is not
described in this section.
Start the replacement work after the main pressure of the main unit has been shut down.
1) Detach the head core base assembled into the head main stay.
2) Detach the head main stay/stay stands L･R.
3) Detach the head cable guide.
4) Detach the head fan.
5) Disconnect the connectors (Z･θmotor connectors and optical fibers, etc.) from three
ZT-driver boards.
6) Detach the ZT-driver support.
7) Disconnect the Z-motor driver cables and air tubes from the Z-power connector base.
8) Detach the Z-power connector base.
9) Detach the LNC60 encoder and disconnect the 1394 cable.
10) Disconnect the φ4-air tube from the union Y for the head up cylinder.
11) Detach the air cylinder. (See section 2-4.)
12) Detach the head cover.
13) Disconnect the air tube and detach the solenoid valve together with the SV support A.
14) Remove the assembly screws while holding the head by hand so that it does not fall
down. Pull out two parallel pins and raise the head unit to detach it. At this time, pay
special attention so that the head is not in contact with other parts.
∗Take great care since adjustment shims may be put between the XM base and head
bracket.
15) Reassemble the components in the reverse order of disassembly.
16) Put shims to make the adjustment so that the distance between the jig nozzles put in
parallel is within 0.03 mm of head offset in the Y-direction. (The target value is 0.02 mm.)
Rev. 1.00

FX-3R Maintenance Guide
2-2
Rev. 1.00
17) Assemble the head main stay. First, push the head main stay against the bottom of the
head main base and assemble them. After that, adjust the height levels of the stay
stands L･R and Z-power connector base, and then assemble them.
The Fig. below shows the LF head. Replace other head in the same manner as
described above.
∗Apply Loctite 242 to the head assembly screws (6 pcs.) and assemble them with a
tightening torque of 7.0N･m.
∗After the head has been replaced, MS parameters need to be input again. For details
about input items, see section 2-7.