JUKI KE-1070 Operating manual

High-Speed Chip Shooter
KE-1070/1070C/2070C/2070
High-Speed Flexible Mounter
KE-1080/2080/2080R
MAINTENANCE GUIDE
Contact [e-mail] for PA R T II
PA R T I
CUSTOMER SUPPORT DEPARTMENT

Important
(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

(4) JUKI Corporation shall disclaim all the responsibility for any trouble resulting
from the user's abnormal operation regardless of Item (3).
(5) Microsoft, Windows are registered trademarks or trademarks of Microsoft
Corporation in the United States and /or other countries.
The company names and product names mentioned in this document are
generally registered trademarks or trademarks of the respective companies.

Maintenance Guide
i
Table of 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 XM .................................................................................................................. 1 - 1
1-1-2. Timing Belt XB ................................................................................................................... 1-3
1-1-3. Timing Belt YM .................................................................................................................. 1 - 6
1-1-4. Timing Belt YB ................................................................................................................... 1-7
1-2. Replacing the Pulleys ....................................................................................... 1 - 10
1-2-1. Replacing the Pulley XA .................................................................................................. 1-10
1-2-2. Replacing the Pulley XM (X-Motor Assembly) ................................................................ 1-10
1-2-3. Replacing the Pulley YA .................................................................................................. 1-10
1-2-4. Replacing the Pulley YM (Y-Motor Assembly) ................................................................ 1-10
1-2-5. Replacing the Pulley YB .................................................................................................. 1-10
1-3. Replacing the Servomotors .............................................................................. 1 - 11
1-3-1. Replacing the X-Motor ..................................................................................................... 1- 11
1-3-2. Replacing the Y-Motor ..................................................................................................... 1- 11
1-4. Replacing the Magnescale ............................................................................... 1 - 12
1-4-1. Magnescale Affixing Position .......................................................................................... 1 -12
1-4-2. Clearance of the Magnescale .......................................................................................... 1 -14
1-4-3. Clearance between the Sensor Head and the Y-Axis Linear Way (for Y-Axis Only) ..... 1-16
1-5. Replacing the Limit Sensor and the X-Axis Home Proximity Sensor ................ 1 - 17
1-5-1. Replacing the X-Axis Limit Sensor and the X-Axis Home Proximity Sensor .................. 1-17
1-5-2. Replacing the Y-Axis Limit Sensor and the Y-Axis Home Proximity Sensor .................. 1-18
1-5-3. Replacing the Y-Axis Limit Sensor and the Y-Axis Home Proximity Sensor
󴅻KE-1070C/2070C󴅼 ......................................................................................................... 1 -19
1-6. Replacing the Home Position Sensor ............................................................... 1 - 20
1-6-1. X-Axis .............................................................................................................................. 1 - 20
1-6-2. Y-Axis .............................................................................................................................. 1 - 20
1-7. Replacing the Plastic Rail ................................................................................. 1 - 21
1-7-1. Replacing the X-Axis Plastic Rail X-Axis Plastic Rail (Part No. 40046023) ................... 1-21
1-7-2. Replacing the Y-Axis Plastic Rail Y-Axis Plastic Rail (Part No. 40046022) ................... 1-22
1-8. Replacing the Cables in the X/Y Veyor-Cable .................................................. 1 - 23
1-8-1. Removing the X Cable .................................................................................................... 1-23
1-8-2. Checking the Cable Marking (X) ..................................................................................... 1-25
1-8-3. Assembling the Cable...................................................................................................... 1-26
1-8-4. Separating the Fusion-bonded Parts of the Cables ........................................................ 1-28
1-8-5. Removing the Y Veyor-Cable .......................................................................................... 1 - 29
1-8-6. Placing Marks on the Y Veyor-Cable .............................................................................. 1-29

Maintenance Guide
ii
1-8-7. Assembling the Cables .................................................................................................... 1 - 30
1-8-8. Wiring around the Head .................................................................................................. 1-35
1-9. Replacing the Cables in the X/Y Veyor-Cable (KE-2080R) .............................. 1 - 36
1-9-1. Removing the X Cable .................................................................................................... 1-36
1-9-2. Checking the Cable Marking (X) ..................................................................................... 1 -39
1-9-3. Assembling the Cable...................................................................................................... 1-41
1-9-4. Separating the Fusion-bonded Parts of the Cables ........................................................ 1-43
1-9-5. Removing the Y Veyor-Cable .......................................................................................... 1 - 44
1-9-6. Placing Marks on the Y Veyor-Cable .............................................................................. 1-44
1-9-7. Assembling the Cables .................................................................................................... 1 - 45
1-9-8. Wiring around the Head .................................................................................................. 1- 50
[2] HEAD UNIT ....................................................................................... 2-1
2-1. Replacing and Adjusting the Head ..................................................................... 2 - 1
2-1-1. LNC Head .......................................................................................................................... 2-1
2-1-2. IC Head (KE-1080/2080) ................................................................................................... 2-3
2-1-3. IC Head (KE-2080R) ......................................................................................................... 2-4
2-2. Replacing the Motor ........................................................................................... 2 - 4
2-2. Replacing the Motor ........................................................................................... 2 - 5
2-2-1. Z-Motor (LNC Head) .......................................................................................................... 2 -5
2-2-2. -Motor (LNC Head) .......................................................................................................... 2-7
2-2-3. Z-Motor (IC Head) ............................................................................................................. 2 - 8
2-2-4. -Motor (IC Head: KE-1080/2080) .................................................................................. 2 - 10
2-2-5. -Motor (IC Head: KE-2080R) ......................................................................................... 2 - 11
2-3. Replacing the Z-Sensor .................................................................................... 2 - 12
2-3-1. LNC Head ........................................................................................................................ 2 - 12
2-3-2. IC Head ............................................................................................................................ 2 - 13
2-4. Replacing the T-Sensor (KE-2080R) ................................................................ 2 - 14
2-5. Replacing the Laser Sensor ............................................................................. 2 - 15
2-5-1. Replacing the LNC .......................................................................................................... 2 -15
2-5-2. Replacing the Point Sensor (KE-1080/2080) .................................................................. 2-16
2-5-3. Replacing the FMLA (KE-2080R) .................................................................................... 2-18
2-6. Replacing the Head Up Cylinder ...................................................................... 2 - 20
2-7. Replacing the Belts ........................................................................................... 2 - 21
2-7-1. LNC Head ........................................................................................................................ 2 - 21
2-7-2. IC Head ............................................................................................................................ 2 - 22
2-8. Replacing the Z-Slide Shaft .............................................................................. 2 - 24
2-9. List of Readjustment Items after Replacement ................................................. 2 - 25

Maintenance Guide
iii
[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 ............................................................................................................. 3-1
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 (F10R Amplifier) ............................................ 3-3
3-2-5. Setting the Switches on the Bad Mark Sensor Assembly (F10R Amplifier) ..................... 3-4
3-2-6. Assembling and Setting the F70R Fiber Sensor Amplifier ................................................... 3-4
3-2-7. Manual Setting Method for the F70R Fiber Sensor Amplifier ........................................... 3-7
3-3. Replacing the HMS ............................................................................................. 3-8
3-3-1. Replacing the HMS Head ................................................................................................ 3-8
3-3-2. Replacing the Amplifier .................................................................................................... 3-8
3-3-3. Sticking the Label ............................................................................................................. 3-9
3-3-4. Adjusting the HMS Height ................................................................................................ 3-9
3-4. Replacing the Head Board ............................................................................... 3-10
3-4-1. Replacing the Head Main Board .................................................................................... 3-10
[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 Front/Angle Light Board Assembly ..................................... 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. Offset Placement after Solder Screen-Printing Light (Option) ............................ 4-7
4-7-1. Replacing the Offset Placement after Solder Screen-Printing Light ................................. 4-7
4-7-2. Adjusting the light quantity of the Offset Placement
after Solder Screen-Printing Light .................................................................................... 4-8
4-8. List of Readjustment Items after Replacement ................................................... 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 IN and OUT Motors ...................................................................... 5-3
5-4. Replacing the CENTER Motor ............................................................................ 5-4
5-5. Replacing the IN and OUT Sensors ................................................................... 5-5

Maintenance Guide
iv
5-6. Replacing the WAIT Sensor ............................................................................... 5 - 6
5-6-1. Replacing the Fiber ........................................................................................................... 5 - 6
5-6-2. Replacing the Amplifier Unit .............................................................................................. 5-7
5-7. Replacing the STOP and C. OUT Sensors ......................................................... 5 - 8
5-8. Replacing the Stopper Cylinder .......................................................................... 5 - 9
5-9. Replacing the Support Table Home Position Sensor
(BU Home Position Sensor) .............................................................................. 5 - 10
5-10. Replacing the T-PIN Sensor (Optional) ............................................................ 5 - 11
5-11. Replacing the Pusher Y Cylinder (Outer Shape Reference) ............................. 5 - 12
5-12. Replacing the Pusher X Cylinder (Outer Shape Reference/Optional Unit) ....... 5 - 13
5-13. Replacing the Pressure Reducing Valve .......................................................... 5 - 13
5-14. Replacing the Centering Pin (Option) ............................................................... 5 - 14
5-15. Replacing the Support Table Motor (BU Motor) ................................................ 5 - 15
5-15-1. Adjusting the Gap between Torque Supporter and Support Motor .................................. 5 -15
5-15-2. Adjusting the Tension of the Support Table Driving Timing Belt .................................... 5-16
5-15-3. Placing the Support Table Surface Horizontally ............................................................. 5-17
5-16. Replacing the Support Table ENC .................................................................... 5 - 18
5-17. Backup Stopper (for CE Type Only) ................................................................. 5-19
5-18. Solenoid Valve .................................................................................................. 5 - 20
5-18-1. Solenoid Valve (KE-1070C) ............................................................................................ 5-20
5-18-2. Solenoid Valve (KE-2070/2080/2080R/1080) ................................................................. 5-21
[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 Load Cell...................................................................................... 6 - 3
[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] VCS ................................................................................................... 8-1
8-1. Replacing the CCD Camera Lens
(It is recommended to replace the VCS camera assembly.) ............................... 8 - 1
8-2. Replacing the Standard VCS󳰲Optional VCS Switching Cylinder ...................... 8 - 3
8-3. Replacing the Light Boards................................................................................. 8 - 4
8-3-1. Transmission Light Board, Coaxial Light Board ................................................................ 8-4
8-3-2. Downward Light Board, Side Light Board ......................................................................... 8-5

Maintenance Guide
v
[9] FEEDER BANK AND REPLACEMENT TABLE (OPTIONAL) .......... 9-1
9-1. Overall Drawing .................................................................................................. 9 - 1
9-2. Replacing the Drive Cylinder .............................................................................. 9 - 2
9-3. Adjusting the Speed Controller of the Drive Cylinder .......................................... 9 - 4
9-4. Replacing the Feeder Bank Board and Feeder I/F Board ................................... 9 - 5
9-5. Replacing the Bank-Up Cylinder ......................................................................... 9 - 6
9-6. Adjusting the Speed Controller of the Bank-Up Cylinder
(Optional Replacement Table) ............................................................................ 9 - 7
9-7. Replacing the Bank-Up Detection Sensor (Optional Replacement Table) .......... 9 - 8
9-8. Replacing the Selector Switch (Optional Replacement Table) ........................... 9 - 9
9-9. Replacing the Roller Lever (Optional Replacement Table) ............................... 9 - 10
[10] PNEUMATIC UNITS ........................................................................ 10-1
10-1. Replacing the Digital Pressure Switch .............................................................. 10-1
10-1-1. Adjusting the Digital Pressure Switch ............................................................................. 10-1
10-2. Replacing the Filter Element ............................................................................. 10-3
10-3. Replacing the Vacuum Meter ........................................................................... 10-4
10-4. Replacing the Vacuum Pump Parts (Optional Unit) .......................................... 10-5
10-4-1. For KE-2070 Rev. E, KE-2080 Rev. G, KE-2080R Rev. A or Earlier ............................. 10-5
10-4-2. For KE-2070 Rev. F, KE-2080 Rev. H, KE-2080R Rev. B or Later ................................ 10-6
[11] SWITCHES ....................................................................................... 11-1
11-1. Replacing the Push-Button Switch ................................................................... 11-1
11-2. Replacing the EMERGENCY STOP Switch ..................................................... 11-2
11-3. Replacing the Cover Open Switch (KE-2070/2080/2080R/1070/1080) ............ 11-3
11-3-1. Switch Main Unit .............................................................................................................. 11-3
11-3-2. Switch Main Unit (KE-1070C/2070C) .............................................................................. 11-4
11-3-3. Operation Key .................................................................................................................. 11-6
11-4. Replacing the Push-Button Switch (CE Marking Machine) ............................... 11-7
[12] REPLACING AND ADJUSTING THE FEEDER FLOAT SENSOR .. 12-1
[13] OTHER UNITS ................................................................................ 13-1
13-1. Replacing the Image Monitor ............................................................................ 13-1
13-1-1. Replacing the CRT Monitor with the LCD Monitor .......................................................... 13-1
13-1-2. Replacing the Image Monitor (LCD) ................................................................................ 13-5
13-2. Replacing the FDD (Floppy Disk Drive) (Optional Unit) .................................... 13-6

Maintenance Guide
vi
13-3. Replacing the LCD Monitor............................................................................... 13-7
13-3-1. Replacing the LCD Monitor ............................................................................................. 13-7
13-3-2. Replacing the Backlight of the LCD Monitor ................................................................. 13-10
13-3-3. Jumper settings for RS232C CHANGE PCB ASM ....................................................... 13-11
13-3-4. Setup and connection when the optional rear monitor is used ..................................... 13-12
13-4. Replacing the System Disk ............................................................................. 13-14
13-4-1. Replacing the SSD ........................................................................................................ 13-14
13-4-3. Setting Up the BIOS ...................................................................................................... 13-16
13-4-4. Setting Up the Network
(This setup is performed when communicating with the HLC) ..................................... 13-24
13-4-5. Installing the KE2000-series System Programs and Flexline DB ................................. 13-34
13-4-6. Upgrading the System Version...................................................................................... 13-43
13-5. Replacing the Load Cell Amplifier (Optional Unit) ........................................... 13-47
[14] ELECTRICAL COMPONENTS ........................................................ 14-1
14-1. Layout of Electrical Components ...................................................................... 14-1
14-1-1. Part Names (KE-1070/1070C/1080) ............................................................................... 14-1
14-1-2. Part Names (KE-2070/2070C/2080/2080R) ................................................................... 14-2
14-2. Layout of Top of Base Frame ........................................................................... 14-3
14-2-1. Part Names ...................................................................................................................... 14-3
14-3. Power Supply Unit ............................................................................................ 14-4
14-3-1. Structure of Power Supply Unit ....................................................................................... 14-4
14-4. Control Unit ..................................................................................................... 14-12
14-4-1. Structure of Control Unit ................................................................................................ 14-12
14-4-2. CPU Board (Old Board: 40044475, New Board: 40107372) ........................................ 14-15
14-4-3. Position Board (40044540) ............................................................................................ 14-17
14-4-4. IEEE1394A Board (40150021) ...................................................................................... 14-18
14-4-5. Bus Bridge Board (40003313)
....................................................................................... 14-19
14-4-6. SAFETY Board (40136685) .......................................................................................... 14-20
14-4-7. BASE FEEDER Board Assembly (40001941) .............................................................. 14-24
14-4-8. I/O Control Board Assembly (40001943) ...................................................................... 14-26
14-4-9. Adjusting the Light Ctrl Board Assembly (40001904)
and Light Ctrl Board (50) Assembly (40001918) .......................................................... 14-28
14-4-10. IP-X3R Board Assembly DIP switches settings ............................................................ 14-29
14-4-11. XY Relay Board (40044557) ......................................................................................... 14-30
14-4-12. I-CX Board Assembly (40031754) ................................................................................ 14-31
14-4-13. MCM (Multi Nozzle Control Module) Board (E9610729000) (KE-2080R Only) ............ 14-33

Maintenance Guide
vii
14-5. X-Y Unit .......................................................................................................... 14-34
14-5-1. Structure of X-Y Unit ...................................................................................................... 14-34
14-5-2. Display Indication of XY Servo Amplifier ....................................................................... 14-35
14-6. Z- ........................................................................................................... 14-36
14-6-1. Structure of Z- ...................................................................................................... 14-36
14-6-2. LED Indications ............................................................................................................. 14-37
14-7. Transport Unit ................................................................................................. 14-38
14-7-1. Structure of Transport Unit ............................................................................................ 14-38
14-7-2. Adjusting the CARRY Relay Board ............................................................................... 14-45
14-7-3. Adjusting the Stepping Driver ........................................................................................ 14-46
14-8. Head Unit........................................................................................................ 14-48
14-8-1. Boards Used on the Head Unit...................................................................................... 14-48
14-8-2. Adjusting the Boards of the Head Unit .......................................................................... 14-48
14-9. Covers ............................................................................................................ 14-58
14-9-1. Structure of Operation Unit ............................................................................................ 14-58
14-9-2. Jumper Switch Settings on the Operation Board Assembly (40001953)
and Operation Board Assembly [EN] (40001954) ........................................................ 14-58
14-9-3. Mounting Switches onto the Operation Switchboard .................................................... 14-60
14-10. UPS (Old Board: 40003292, New Board: 40095745) ..................................... 14-66
14-10-1. Checking the UPS Battery (40011120) Voltage ............................................................ 14-66
14-10-2. Replacing the UPS Battery ............................................................................................ 14-67
14-11. Replacing the Fuse of the AC Input Unit ........................................................ 14-70
[15] AUTO BOARD WIDTH ADJUSTMENT ........................................... 15-1
15-1. Assembling the AWC Bracket ........................................................................... 15-1
15-2. Assembling to the Machine Main Unit .............................................................. 15-2
15-2-1. Mounting the AWC Bracket Assembly ............................................................................ 15-2
15-2-2. Mounting the AWC Bracket Assembly ............................................................................ 15-3
15-3. Mounting the Origin Sensor Dog ...................................................................... 15-4
15-4. Support Pin Detection Sensor .......................................................................... 15-5
15-4-1. Mounting the Support Pin Detection Sensor ................................................................... 15-5
15-5. Bundling the Support Pin Detection Sensor...................................................... 15-7
15-5-1. Mounting the Support Pin Detection Sensor (Bundling the Cables) ............................... 15-7
15-5-2. Mounting the Support Pin Detection Sensor (Bundling the Cables) ............................... 15-8
15-6. Adjusting the Sensor ........................................................................................ 15-9
15-7. Mounting the Driver Bracket ............................................................................. 15-9
15-8. Setting the Driver ............................................................................................ 15-10
15-9. Mounting the Support Pin Sensor Dog ........................................................... 15-11

Maintenance Guide
viii
[16] FEEDER POSITION INDICATOR .................................................... 16-1
16-1. Detaching the FPI (Front) from the Machine Main Unit .................................... 16-1
16-2. Detaching the FPI (Rear) .................................................................................. 16-2
[17] PLACEMENT MONITOR (OPTIONAL) ........................................... 17-1
17-1. Replacing the LNC61/62................................................................................... 17-1
17-2. Replacing the EPV61/62................................................................................... 17-2
17-3. Replacing the Head Up Cylinder (KE-2080/2080R) .......................................... 17-3
17-4. Obtaining the Offset after Replacement ........................................................... 17-5
17-5. Checking the Images after Replacement .......................................................... 17-6
17-5-1. Calibration Application ..................................................................................................... 17-6
17-5-2. EPV Calibration ............................................................................................................... 17-9
[18] CVS (OPTIONAL) ........................................................................... 18-1
18-1. Replacing the CONTACT SUB UNIT ................................................................ 18-1
18-2. Replacing the PCB ........................................................................................... 18-4
[19] IS (OPTIONAL) ............................................................................... 19-1
19-1. Replacing the MPC and HUB ........................................................................... 19-1
19-1-1. HUB BOX Attached outside Machine .............................................................................. 19-1
19-1-2. HUB BOX Attached inside Machine ................................................................................ 19-4
19-2. Replacing the Cable and Connector of Collective Exchange Carriage ............. 19-9
19-3. Replacing the Antenna of Collective Exchange Carriage ............................... 19-10
[20] Traceability /On-demand (OPTIONAL) .......................................... 20-1
20-1. Replacing the RS-232C Port Expansion Board ................................................ 20-1
20-2. To replace the barcode reader: ........................................................................ 20-2
[21] JIG LISTS ........................................................................................ 21-1
21-1. KE-1070/1070C Jig Lists .................................................................................. 21-1
21-2. KE-1080/2070/2080/2080R Jig Lists ................................................................ 21-3
Appendix
1. Checking the Board Function Rev., Board Pattern Rev., and DIP SW ..................... A-1
2. Checking the Board Rev. on the Mounter Main Unit
(For KE-1070/70C/2070/80/80R) ....................................................................... A-2

Maintenance Guide
1-1
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
If a tension of any belt drops below the criteria value, you must adjust it.
For details about the criteria value, see “Readjustment on market” of Specification values on
page 1-4.
1-1-1. Timing Belt XM
To carry out the work efficiently, detach the side cover. Remove the cover fixing screws and slide
the cover toward the rear to detach the side cover.
(1) Remove the SM1051052TN (3 pcs.), SL6051292TN (1 pc.) and SL6061092TN (2 pcs.)
fixing the CB support. (No right side cover is equipped.)
If the belt has been replaced, measure the tension again after
several days have elapsed.
Figure 1-1-1-1
CB support
DANGER
Caution

Maintenance Guide
1-2
(2) Loosen the NM6050001SC, and then SM8053002TP that applies the tension to the timing
belt XM.
(3) Remove the timing belt XB. (See section 1-1-2.)
(4) Remove the SL6064092TN fixing the XA-pulley bracket assembly, and SL6062092TN fixing
the XA-pulley base to detach the XA-pulley bracket assembly.
(5) Remove the SL6062092TN fixing the motor assembly to detach the X-motor assembly.
(6) Replace the timing belt XM.
(7) Reassemble the components in the reverse order of disassembly.
(8) Adjust the tensions of the timing belts XM and XB. For details, refer to the description of
timing belts XM and XB on QA Table, XY Unit (1). (See also Adjustment Procedure on page
1-4.)
Figure 1-1-1-2
*
This figure shows the left side of
the unit when viewed from the
side. (The right side has the
same structure.)
X-motor assembly
X-frame end
XA-pulley
bracket assembly
Timing belt XM

Maintenance Guide
1-3
X-belt support assembly
Head plate
Figure 1-1-2-1
X-belt tensioner
X-belt support (2)
X-belt stay
1-1-2. Timing Belt XB
(1) Remove the SL6053592TN (2 pcs.)
and SL6052592TN (2 pcs.),
then detach the head plate
and the X-belt support
assembly.
(2) Loosen the X-belt tension
adjustment screw (SM6057552TP).
(3) Remove the SM6042092TN
sandwiching the timing belt to
replace the belt.
(4) Sandwich the timing belt XB by the
X-belt support (2) and X-belt tensioner,
and secure them using the SM6042092TN.
At this time, apply Loctite 277 to the
SM6042092TN and tighten the
SM6042092TN evenly with a
tightening torque of 5 N󴇘m.
(5) Reassemble the components
in the reverse order of disassembly.
(6) Adjust the tension of the timing belt XB.
(See the adjustment procedure on page 1-4.)
Figure 1-1-2-2

Maintenance Guide
1-4
<Adjustment Procedure>
 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.
 When adjusting the X-motor belt, measure the tension at several positions (at least
five positions) while rotating the pulley and check that the averaged value is within the
specification value range.
 Tension meter input values
Belt type Model Belt unit weight
(g/m󴇘mm)
Belt width
(mm)
Belt span
(mm)
Timing belt XM All models 2.5 20 119
Timing belt XB All models 3.8 60 1157
 Position of measurement
 Specification values
1. Factory default setting
X-belt (timing belt XB): 1070  50N
X-motor belt (timing belt XM): 175  20N
2. Readjustment on market
X-belt (timing belt XB): If the tension becomes less than 650N, readjust
the belt tension.
X-motor belt (timing belt XM): If the tension becomes less than 100N, readjust
the belt tension.
X-axis
Rear
X-belt
X-motor
belt
Front
Y-axis
Rear
Y-belt
Y-belt
Front
Y-motor bracket

Maintenance Guide
1-5
 Adjusting method
 Timing belt XM
 Loosen the SL6051692TN
fixing the X-motor.
 Loosen the NM605001YN
and adjust the tension
using the SM8053002TN.
 Tighten the SL6051692TN
firmly. (Tightening torque:
15 N󴇘m)
 Lock the NM6050001TN.
 Timing belt XB
 Loosen the SL6052592TN
fixing the X-belt support L
and X-belt support R.
 Adjust the tension using the
SM6057552TP.
 Tighten the SL6052592TN
firmly. (Tightening torque:
8.5 N󴇘m)
X-axis frame
assembly
X-belt support assembly

Maintenance Guide
1-6
1-1-3. Timing Belt YM
(1) Detach the pulley cover.
(2) Remove the timing belt YB. (See section 1-1-4.)
(3) Loosen the SL6061492TN fixing the Y-motor assembly.
(4) Loosen the SM6041202TN to loosen the tension of the timing belt YM.
(5) Loosen the SL6064092TN to detach the YM-bracket assembly.
(6) Loosen the SL6063592TN to replace the YA-pulley bracket assembly.
(Replacement of only the timing belt YM is not allowed. Always replace the YA-pulley
bracket assembly as a set.)
(7) Reassemble the components in the reverse order of disassembly. Then adjust the tensions
of the timing belts YM and YB. (See the adjustment procedure on page 1-8.)
Figure 1-1-3-1
Y-axis frame

Maintenance Guide
1-7
1-1-4. Timing Belt YB
To carry out the work efficiently, detach the side covers. Remove the cover fixing screws and
slide the cover toward the rear to detach the side cover.
(1) Remove the SL6062092TN fixing the Y-belt support (1) to the X-frame end.
 If it is not easy to remove it, use a heat gun or other tool to heat the connection part
before removing it.
(2) Loosen the SL6062592TN fixing the YB-pulley bracket assembly.
(3) Loosen the SM6084002TN to detach the YB-pulley bracket assembly.
(4) Remove the SL6041292TN sandwiching the timing belt YB. Replace the timing belt YB.
(5) Reassemble the components in the reverse order of disassembly. Adjust the tension of the
timing belt YB. (See also Adjustment Procedure on page 1-8.)
Apply Locktite 242 to SL6062092TN.
Figure 1-1-4-1
Figure 1-1-4-2
Y-belt support (2)
Timing belt YB
To the X-frame end assembly
Y-belt support (1)
Timing belt YB
(From the rear side)
Y-axis
frame
YB-pulley bracket
assembly

Maintenance Guide
1-8
<Adjustment Procedure>
 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.
 When adjusting the Y-motor belt, measure the tension at several positions (at
least five positions) while rotating the pulley and check that the averaged value is
within the specification value range.
 Tension meter input values
Belt type Model Belt unit weight
(g/m󴇘mm)
Belt width
(mm)
Belt span
(mm)
Timing belt YM All models 2.5 40 93
Timing belt YB
1070M/1070CM
2070M/2080M 3.8 70 1115
1070L/1070CL/1080L/
2070L/2070CL/2080L 3.8 70 1221
1080E/2080E 3.8 70 1325
 Position of measurement
 Specification values
1. Factory default setting
Y-belt (timing belt YB): 1230  50N
Y-motor belt (timing belt YM): 325  20N
2. Readjustment on market
Y-belt (timing belt YB): If the tension becomes less than 800N, readjust
the belt tension.
Additionally, the difference between the left and
right belt tension values does not exceed 100N.
Y-motor belt (timing belt YM): If the tension becomes less than 190N, readjust
the belt tension.
X-axis
Rear
X-belt
X-motor
belt
Front
Y-axis
Rear
Y-belt
Y-belt
Front
Y-motor bracket

Maintenance Guide
1-9
 Adjusting method
 Timing belt YM
 Loosen the SL6061492TN fixing
the Y-motor.
 Adjust the tension using the
SM6041602TN.
 Tighten the SL6061492TN firmly.
(Tightening torque: 10 N󴇘m)
 Timing belt YB
 Loosen the SL6062592TN fixing
the YB-pulley bracket.
 Adjust the tension using the
SM6084002TN.
 Tighten the SL6062592TN firmly.
YB-bracket
Timing belt YB
Y-axis frame

Maintenance Guide
1-10
1-2. Replacing the Pulleys
1-2-1. Replacing the Pulley XA
Carry out the replacement work in the same manner as for the timing belt XM in 1-1-1.
1-2-2. Replacing the Pulley XM (X-Motor Assembly)
Carry out the replacement work in the same manner as for the timing belt XM in 1-1-1.
1-2-3. Replacing the Pulley YA
Carry out the replacement work in the same manner as for the timing belt YM in 1-1-3.
1-2-4. Replacing the Pulley YM (Y-Motor Assembly)
Carry out the replacement work in the same manner as for the timing belt YM in 1-1-3.
1-2-5. Replacing the Pulley YB
Carry out the replacement work in the same manner as for the timing belt YB in 1-1-4.