Sumitomo CAK-0057-EX Instruction Manual

Te ch n ic a l In f or m at io n

KOUTURIGISHI-1078H

Optical Connector Termination Tool

CAK-0057-EX

Instruction Manual

2011-03-16

SUMITOMO ELECTRIC INDUSTRIES, LTD.

★The information contained herein is presented only as a guide for the applications
of our products. No responsibility is assumed by SUMITOMO ELECTRIC for any
infringements of patents or other rights of the third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent
rights of SUMITOMO ELECTRIC or others
★The information contained here may be changed without prior notice. It is therefore
advisable to contact SUMITOMO ELECTRIC before proceeding with the design of
equipment incorporating this product.

© Sumitomo Electric Industries, Ltd.

CONTENTS

Page

1. Outline 3

1.1 Scope 3

1.2 Features 3

2. Composition of CAK-0057-EX 4

2.1 Composition diagram of CAK-0057-EX 4

2.2 Component parts of CAK-0057-EX 4

3. Component parts of optical connector 5

3.1 Parts list of optical connector 5

3.2 Conceptual diagram for assembly of optical connector 6

4. How to use a microscope 7

4.1 Inspection of a cut face of optical fiber 7

4.2 Batteries exchange 7

5. Assembling procedure for H-PCF cables / cords 8

5.1 Preparatory work for optical fiber cable 8

5.2 Preparatory work for the optical fiber cord 9

5.3 Preparatory works for the ferrule attaching process 9

5.4 Attaching the ferrule 13

5.5 Cleaving the optical fiber 15

5.6 Inspection of the end surface of the cleaved optical fiber 16

5.7 Assembly of the optical connector CF-2071 18

5.8 Assembly of the optical connector CF-1071,CF-1571 21

6. Cable end installation 22

7. Ordering information 23

8. Trouble shooting 24

1

2

Caution

,fingers or other parts of a body.

Be careful not to be stuck with tip of optical fiber in eyes,

It may cause lose sight or other serious injuries.

Handle the tools and connector component parts with care

Caution

not to get injured or damage them.

Don't put fingers or other parts of a body between the blades
of ferrule assembly tool JRFK-57 in use. It may cause injury.

Caution

Use tools according to this instruction manual.
Wrong usages may cause injury , damage of the tool or sub-

Attention

standard assembled connector.

To ol k it C AK - 00 57 i s de s ig ne d on ly fo r o ur a p pl ic ab le
connectors described on the page 3.
Don't use for any other products. It may damage the tool.

Attention

For the quality assurance of the applied fiber optic data-link
systems, please make sure to perform the optical loss tests

Attention

after assembling connectors.

2. Composition of CAK-0057-EX

2.1 Composition diagram of CAK-0057-EX

6

5

4

3

2

1

2.2 Component parts of CAK-0057-EX

1

Optical fiber cleaver

2

Ferr

ule assembly tool

3

Microsc

ope CAT-0057B

1

CR-CF2071

5

Scissors

-

1

6

-

1

7

Instruction manuals (English) KOUTURIGISHI-1078

1

Carrying case

4

Cap remover

Prod

uct name of component

No.

1

1

JRF

K

-57

Quantity Sub code

FOCUS200-

EX

1

4

3. Component parts of optical connector CF-1071,CF-1571,CF-2071

3.1 Parts list of optical connector

No.

Product

name

Item CF-1071 CF-1571 CF-2071

Figure

Code FL-CF1071

1 Ferrule

Quantity 1 2

5

Figure

Code Collar 4511

2 Collar

Quantity 1 2

Figure

Code VJA7084 CB-CF2071

3

Cord
Bush

Quantity 1 1

Figure

Code VJM7069 SP-CF1071

4

Coil

Spring

Quantity 1 2

Figure

Code VJA7218 CP-CF2071

5

Plug

Cap

Quantity 1 1

Figure

Code VJA7219-S1 VJA7217-S1 CS-CF2071

6

Plug
Case

Quantity 1 1 1

Figure

Code VJA7115 DC-CF2071

7

Dust

Cap

Quantity 1 1

Note (1) The quantity is the requirement for a piece of the fiber optic connector.

3.2 Conceptual diagram for assembly of optical connector

Plug Case

Ferrule

Collar

Coil S

p

rin

g

Plug Cap

コードブッシ

光ファ

イバコー

Cord Bush

Plug Case

Ferrule

Collar

Coil Spring

Plug Cap

光ファ

イバコー

Optical Fiber Cord

Optical Fiber Cord

Cord Bush

（1）CF-1071

（2）CF-1571

Optic

al Fiber Cord

6

Collar

Plu

g

Ca

p

Cord Bush

F

errule

Plug Case

（3）CF-2071

Coil Spring

4. How to use a microscope

4.1 Inspection of a cut face of optical fiber

Open the arms, then a lamp inside turns on.

Insert the ferrule into the hole of the ferrule

adaptor ,and then the face of the cut fiber and the

ferrule can be seen by adjusting focusing dial.

Attention: When the microscope is not in use, close its

arms to prevent batteries from exhausted.

Focusing dial

Ferrule adaptor

1. open

4.2 Batteries replacement

Open the arms and slide the cover in the direction

shown by “ “, then there appears the battery

container.

Attention: When the microscope is not in use, close

its arms to prevent batteries from exhausted.

2. slide

Cover

1. open

OPEN

7

5. Assembling procedure for H-PCF cables/cords.

5.1 Preparatory work for optical fiber cables
(The work shown in this page is mentioned only for cables. In case of cords, please skip it and start
from the next page.)

8

Fig.3

(1) Remove the sheath by using your own

knife. (Fig.3)

Remove length ----- 200mm (Reference
value)

Fig.4

(2)

Cut off the hold tape, the filler and the
filler cords at the end of the sheath with
the scissors to expose the optical fiber
cords and the central strength member .
(Fig. 4 to 5)

Strength member

Optical fiber cord

Fig.5

Protective boot

Fig.6

(3) Insert the optical fiber cords and the

tension member into the protective boot
and cover the end of the sheath with the
protective boot. (Fig. 6)

5.2 Preparatory work for the optical fiber cord.

Fig.7

Fig.8

130±20mm

CF-257

1

CF-2071

CF-1071・CF-1571

(1) Ins

ert the optical fiber cord from the

bottom(smaller) mouth of the cord bush.

(Fig.7)

(2) Insert the gap at the end of the connection

part of the optical fiber cord, and then by
tearing the optical fiber cord, separate it into
simple cord each. ( Only for the duplex cord.)

Separation length ----- 130

+

-

20 mm (Fig.8)

5.

3. Preparatory work for the ferrule attaching process

Fig.10

(1) I

nsert the cord into the outer
jacket remover of the ferrule
assembly tool from its front
face (label face) , and then
grasp the handle and pull
the cord back straight. In this
way, the outer jacket (black)
of the optical fiber is removed.
(Fig.9 ,10)
Remove length ----- 35 mm

Fig.9

Outer

j

acket remover

Max 1mm

Note：T

he difference in jacket lengths
should be no more than 1mm.
(Fig.11) Otherwise the optical
fiber may bend when the connector
is assembled.

（Fig

. 11）

Fig.12

Note：F

or remove length please refer to
the label that has 35mm width.
（Fig. 12）

9

10

補強材

最

大1mm

心線

Protective coating

Strength member

Collar

Max.1mm

撚り合わせる

Fold and strand the
strength member tightly

(Fig. 15)

(Fig. 13)

(Fig. 14)

(2) Fold bac

k the strength member yarn
at about two strands and then insert
the optical fiber into the collar . (Fig.

13)

(3) Ins

ert the collar into the cord jacket.

Note: Please make the collar projected from

the cord jacket by no more than 1mm.
(Fig.14)

(4) Keep the strength member folded and

strand it tightly. (Fig.15)

(5) P

ut the optical fiber in protective coating
remover through guide hole from front
face (label face). (Fig.16 ,17)

(Fig. 17

)

Protective coating remover
(gu

ide hole)

Note:

Be careful not to nip the strengt h

member between the blade of the
remover, or the blades will be
damaged.

(Fig. 16

)

(6) Grasp the handle and pull the fiber back

straight. (Fig.18)

(Fig.18)

(Fig.1

9)

0-5

mm

Note: T

he remaining length of the protective

coating should be less than 5mm. (Fig.19)

(7) Adjust the length of the strength member

to 5 to 6mm with scissors. (Fig.20)

5 to 6mm

(Fig.2

0)
Note: Make sure to

leave the strength
member 5 to 6mm. This is necessary
to get the pullout strength between
the optical fiber cord and the ferrule.
(Fig.21)

(Fig.2

1)

11

Caution

12

When the blades of the protect coating remover are broken or the procedure is out
of accord with this manual, during the stripping of the protective coating, it may happen
that the plastic cladding of the optical fiber is damaged (surface of the cladding is whitened
or becomes glittering). In this case, the optical fiber may be broken at the point of the
damage in the succeeding assembling process or in the connector under use, because the
cladding of H-PCF is a vital part to insure its high-strength and high-reliability by
protecting the silica core. So please do not forget to perform the following proof test before
proceeding the next step in order to make sure that there are no damage on cladding
whether the the surface of the cladding is whitened or not.

Bend the optical fiber

（Important）

(8) Hold the optical fiber cord (black,

2.2mm dia.) by a hand and tip the
bare optical fiber (core & cladding) 3
to 4 times gently with a finger of
another hand so that the fiber bend
+-120 degrees. And squeeze the
surface of the whole length of the
bare optical fiber about ten times
from the protective coating end to the
fiber end.

(Fig.22)

Squeeze through the fingers

If th

e cladding is damaged, the fiber
is broken down through these
screening processes. (Fig.22 to 23)
Finally observe the bare optical fiber
against a black background so that
the damage of the cladding can be
seen white like. (Fig.24)

Note: Be careful not to damage the

cladding by scratching the fiber
surface with nails.

(Fig.2

3)

Note: Eye glasses or Protecting goggle is

recommended to save your eyes
from particles of the broken fiber.

Note: Particles of the broken fiber should

be collected by adhesive tape or
other method to avoid that they
harm human bodies.

Observe against
black background

(Fig.2

4)

5.4 Attaching the ferrule

(1) F

ix the coil spring onto the optical fiber

cord. (Fig.25)

Coil spring

(Fig.2

5)

Note:

When assembling duplex type
connectors, perform the operations from
this step to "5.5 cleaving of the optical
fiber" separately for each core of the
optical fiber.

(2) Ins

ert the optical fiber into the ferrule.

(Fig.27)

(Fig.26)

Note: Make sure to insert the optical fiber

cord into the ferrule exactly until the
folded strength member projects no
more than 2mm from the bottom of
the ferrule.(Fig.27)

(Fig.2

7)

The tip of the strength
member should be seen

Strength member should
Be folded back

Ferrule

(3) S

et the flange of the ferrule inserted the
optical fiber on press-in blade.
Note the set direction. (Fiber cord
should be to ferrule guide.)
(Fig.28 ,29)

Flange

Ferrule guide

Ferrule press－in blade

Ferrulie guide

Optical fiber

Ferrule

(Fig.2

9)

(Fig.2

8)

13

14

(4) Grasp the handle till it goes no more touching

on the limit screw. (Fig.30,31)
This makes the ferrule pressed axially and
shortened, and the optical fiber is held inside.

handle

limit screw

(Fig.30)

(Fig.31)

(5) S

et the ferrule onto ferrule guide putting the
flange of the ferrule on the ferrule guide from
inside. (Fig.32,33)

Flange

Ferrule guide

(Fig.3

3)

Ferrule g

uide

Flange

Ferrule

(Fig.3

2)

(Fig.3

4)

handle

(6) Gr

asp the handle till it goes no more touching
on the limit screw, with pushing the optical
fiber cord slightly toward the ferrule in order
not to get out the cord from the ferrule.
(Fig.34,35)
This makes the outer jacket of the cord and
the strength member grasped between the
collar and the ferrule.

limit screw

Lightly stretch

(Fig.3

6)

(Fig.3

5)

(7) Lightly stretch the ferrule from the optical

fiber cord by hands to confirm that the
optical fiber cord is tightly fixed onto the
ferrule. (Fig.36)

5.5 Cut the fibers (at the face of the ferrules)
Please see the instruction manual for respective connector and the tool kit except for the procedure
shown bellow.

15

(1) Hold the cleaver with your right hand as shown in the

left photo.

(2) Make sure that there are no fiber chips or other waste

remained on fiber chuck.

Don’t hold the cleaver covering
fiber chuck with the hand as
shown in the right photo.
Fiber chip at the fiber chuck may
hurt the hand.

(3) Let the optical fiber coming out of the ferrule through

the front slit, then insert the ferrule into the hole for
ferrule. Then make sure that the ferrule is put in
deep enough for the front face of it to be on the blade.

Note : Don’t let the optical fiber
through the hole for ferrule.
It may break the fiber.

(4) Direct the hole for ferrule upward, and slowly, press

up the lever to the end, then the optical fiber will be
cut properly.

＊Don’t touch the ferrule when
pressing the lever. It can cause poor
cleave quality.

＊Don’t press up the lever fast. It
can cause poor cleave quality.

＊The lever should be pressed up to
the end. When the optical fiber is
cut, the fiber chuck is slide back.

＊Hole for ferrule should face
upward when pressing the lever.
Otherwise, the optical fiber may be
cut at a little out of the face of
ferrule.

(5) Release the lever, and take out the chip of optical

fiber from fiber chuck with tweezers.

Chips or particles of optical fibers can hurt human body. Be careful
not to be stuck.

Hole for ferrule

Fiber chuck

lever

No remained fiber

Bad example

！ Attention

Front slit

(2)

(1)

！ Attention

Bad example

Hole for ferrule

Upward

Slowly, press
up the lever
to the end.

Bad
example

Close to
each other

Slide
back

No

t finished

Finished

Bad example

If the fiber chip is
short, insert tweezers
from this small slit to
pick it up

！ Attention

(Important)

5.6 Inspection of the end surface of the cleaved optical fiber.

Inspect the finished end surface of the
optical fiber with using the microscope
CAT-0057B. (Fig.42)
(Pleas see page 7 for detail.)

* Make sure to perform also the optical

power test by using the optical power
tester.

* Inspect the face with revolving the

ferrule.

* Inspect the face with lighting the another

end of the optical fiber.

* The faces of the optical fibers, together

with those of the ferrules, will be seen
with a microscope. compare them with
examples shown next page. If they
correspond to any of sub-standard
samples, retry from the first stop.

(Fig.42)

Cladding

Face of the cleaved
optica

l fiber

ゴミ

(Fig.43)

Microscope

Face of th

e ferrule

(Satisfactory sample)
The face if the core is smooth and the
length of the crack is less than 1/10 of the
core diameter.
(Fig.44)

Crack

(Fig.44)

T

he faces of the optical fibers, together
with those of the ferrules, will be seen
with a microscope.
(Fig.43)

Core

16

(Sub-standard sample)
The length of cutting flaw is more
than 1/8 of the core diameter.
(Fig.45)

(Fig.45)

Cutting flaw

(Fig.4

6)

(Sub-stan

dard sample)
Cutting face isn't right angled to the axis
of the fiber.
(Fig.48)

(Sub-standard sample)
The length of the crack is more than 1/10
of the core diameter.
(Fig.46)

(Sub-standard sample)
Hackle is observed on the face.

Crack

(Fig.47)

Hackle

17

Dark image

(Fig.4

7)

(Fig.48)

NOTE: When the quality of the faces of optical fiber get poor frequently, please move the blade

to shift the cutting potion reference in page 25.

5.7 Assembly of the optical connector CF-2071
(See 5.8 for CF-1071 and CF-1571)

(1) Insert the both ferrules into holes on the

plug case from inside, and fix the cord bush
onto the groove on the plug case. (Fig.49)

18

Plug cap

Cord bush stopper

Center guide pin

Side guide pin

Coil spring stopper

Cord bush

Coil spring

Guide groove taper

(2) Put th

e coil springs within the hollow inside the

plug case. (Fig.50)

Make sure that the each coil spring doesn't get on
the rim of the hollow.

(3) Put the plug cap into the plug case taking care

that the ferrules,the coil springs and the cord
bush don't get out of their places.(See below
and Fig51,52)

･This procedure will be easier when the plug case
is held slightly inclined as shown in Fig.51,52.

･Plug cap should be pushed in being kept parallel
to the plug case.(Fig.52)

･The spring stopper on the plug cap should go
along the taper part of the guide groove inside
the plug case, so that the stopper will hold the
end of the coil spring correctly.(Fig.52)

･The cord bush stopper on the plug cap should go
into the hole on the cord bush.(Fig.52)

･A center guide pin and two side guide pins on
the plug cap should go into respective holes on
the plug case.(Fig.52)

(Fig.50)

(Fig.49)

Make sure that the each coil
spring doesn't get on the rim of
the hollow.

(Fig.5

1)

Ferrule

Plug case

(Fig.52)

(4) Push in the plug cap completely. (Fig.53)

Attent

ion:

-Don't push on a latch arm especially a lock
release button. Stresses given on the latch arm
may break it and cause latch lock failure. (Fig.54)

(Fig.5

3)

Lock release button

Latch arm

Attent

ion:

-Incorrect placement of coil springs or ferrules
may cause interference against the plug cap.
When the plug cap isn't put in completely, remove
the plug cap and retry with new plug case and
plug cap.(They may be damaged with put-in and
remove procedure.)

(Fig.5

4)

Attent

ion:

White marking arranged
symmetrical position

-Set th

e ferrules so that the white mark on the
optical fiber cord connected to one connector may
be symmetrical to that on the optical fiber cord
connected to another. (Fig.55)

(Pay attention to the positions of the

light-emission and light reception sides of the
two optical connectors.)

(Fig.55)

19

When pull the cord,
the ferrules are also
moved back .

When release,
ferrules return to
the original position.

(5) T

o examine the connector assembled
correctly , pull the optical fiber cord lightly
(<20N) on and off holding the plug case ,
and see if the ferrules move to it. (Fig.56)
If not, there may be something wrong
inside.
P

lease disassemble and check up.

(Fig.56)

(6) The

plug cap put in the plug case may be
removed by pushing out the center guide pin on
the plug cap through the center hole of the plug
case (Fig.57) by the cap remover. Put the cap
remover on an appropriate table setting its
center pin to the center hole on the plug case,
and then hold the sides of plug case by both
hands and push it down strongly (Fig.58).

Attention:
･Once a plug cap is removed, the plug cap and the
plug case should be replaced with new ones.(They
may be damaged with put-in and remove
procedure.)
･Remove operations should be done with care to
prevent human body from getting hurt. Especially,
if it is done with holding the cap remover by your
hand, you may be injured by the unexpected
situations, such as the pin slipped out from the cap
remover. So this operations must be done with
putting the cap remover on an appropriate table.
･Remove operations should be done with care not to
damage the optical fibers and coil springs.

Center hole

(Fig.57)

(Fig.58)

20

5.8 Assembly of the optical connector CF-1071,CF-1571

Flat

surface

③

② ①

(1) F

ix the plug cap onto the cord bush.

(shown as ① in Fig.59 and Fig.60)

(2) Assembly of the plug case.

(shown as ② in Fig.59 and Fig.60)

Note: The flange of the ferrule has two flat
surfaces to prevent the ferrule rotation.
When assembling the single fiber type optical
connectors (CF-1071&CF-1571), insert the
ferrule into the plug case so that the flat
surfaces of the ferrule contact both the right
and left sides of the ferrule
insertion hole of the plug case. If not, the
ferrule doesn`t go out of the plug case enough
and it cause coupling loss increase.
(Fig.61)

(3) To e xa mine t he co nn ec to r a ss em bl ed

correctly , pull the optical fiber cord lightly

( <20N) on and off holding the plug case ,

and see if the ferrules move to it. (Fig.56)

If not, there may be something wrong

inside. Please disassemble and check up.

Note: Disassembling should be done with care
to prevent human body from getting hurt

.

Note: Disassembling should be done with care
not to damage the optical fibers and coil
springs.

CF-1071(Fig.59)

Flat

surface

③

② ①

CF-1571(Fi

g

.60)

×

(Bad)

○

(Good)

3mm

1mm

(Fi

g

.61)

21

Note: Onc

e a plug cap is removed, the plug cap
and the plug case should be replaced with new
ones.(They may be damaged with put-in and
remove procedure.)

6. Cable end installation

(1) Fix the cable holding back the central tension member so that the optical

fiber cords are not stretched.

(2) Use cable holder or so for the cable not to sway.

(Be careful not to press the cable and fiber cords with the holder.)

(3) Keep minimum radius bend of both cables and optical fiber cords.

Hold back the central tension member.

22

A

nother example to hold back the

tension member

Use cable holder or so.

Keep minimum radius bend.

(Fig.62)

7. Ordering information
Please specify product name

, product code and number of products required.

7.1 Optical connector termination tool kit

23

7.2 Optic

al connector

Product name Product code Sales unit (s

et)

Optical Connector Termination Tool Kit CAK-0057-EX

Optical Fiber Cleaver FOCUS200-EX

Ferrule Assembly Tool JRFK-57

1

Product name Product code Sales unit (set)

CF-1071

CF-1571

Optical Connector

CF-2071

Ferrule

(Note)

FL-CF1071Plus

S-201

S-202

Protective Sleeve

S-204

50

Note: A set of "FL-CF1071Plus" contains a ferrule "FL-CF10

71" and a collar

"4511"

24

8. Trouble shooting

Trouble Typical causes and treatments

Reference

(1)

It is difficult to insert the
collar into the outer jacket
properly.

* The strength member is put aside.
[Please fold back the strength member at about two

strands.]

5.3 (2)

(2)

When striping off the
protective coating
(semitransparent),the
optical fiber is pulled out
from the outer jacket.

* If the length of fiber optic cord is short, please

wind the fiber optic cord twice or three times
around your fingers when you strip off the
protective coating.

5.3 (6)

(3)

A

fter the stripping of the
protective coating, the fiber
is easily broken by the
bending or squeezing test.
Or, after stripping the
protective coating, white
powder-like resin is observed
on the surface of the
cladding.

* A part of the strength member yarn is crimped by

guides or blades of the protective coating remover
of the ferrule assembly tool.

* The blade of the protective coating remover of the

ferrule assembly tool is damaged by the
improper crimping of the strength member yarn
or silica core.

[Be careful not to grip the strength member yarn

with blades of the ferrule assembly tool.]

5.3 (6)

(4)

It is difficult to insert the
optical fiber cord into the
ferrule.

* The strength member is put aside.
* The protective coating (semitransparent) is not

properly removed from the end of the jacket
(black).
[Maximum remaining length:5mm]

* Separation of the duplex cord into 2 simplex

cords is not symmetric

5.4 (2)

5.3 (6)

5.3 (1)

(5)

At the stretching test
between ferrule and cord,
the cord is pulled out from
the ferrule.

* The length of the remained strength member
yarn is too short.

[Remaining length: 5 to 6 mm]

* A collar is not inserted into the jacket.

[Please do not forget to insert the collar.]
* The ferrule is not on the correct position
when it is cramped.
* The fiber cord is pulled out from the ferrule
when cramping the ferrule.
[Please push the cord slightly when cramping the
ferrule.]

5.3 (7)

5.3 (2)

5.3 (5)

5.4 (6)

(6)

Fiber isn't cleaved by pulling
the trigger or cleaved fiber
surface is not good.

* There remain fiber chips or other wastes on fiber
chuck of the cleaver.
* The ferrule isn't put deeply enough into the hole
of the cleaver.
* The fiber isn't held properly in the ferrule.

[Please check the ferrule press-in procedure. ]
* The blade of the cleaver is damaged.

5.5 (2)

5.4 (3),(4)

(7)

(Only for single fiber type
connectors) Fiber output
power is not satisfactory.

* The ferrule may not be set correctly.

5.8 (2)

(8) Maintenance of fiber cleaver FOCU200-EX

In the case the quality of the faces of optical fiber
get poor frequently, please move the blade to shift
the cutting portion by following procedure.

＊ The estimated life for cutting at the one portion

of blade is about 300 cuttings.

(1) With a hex wrench (size 1.5mm), screw down

the two hexagon bolts on the blade positioning
plate to allow it move. (Fig.64)

＊Don’t screw down the hexagon bolts more than 5 turns.
It can cause the cleaver trouble.
＊Don’t screw down any other hexagon bolts other than

size1.5mm. It can cause the cleaver trouble.

(2) Hold the blade positioning plate and slide it to

the direction of an arrow just one division of
scale at a time. (Fig.65)

(3) Screw up the two hexagon bolts on the blade

positioning plate, avoiding pushing it
sideward. (Fig.66)

＊ Don’t push the blade positioning plate sideward. It can

cause the cleaver trouble.

(4) Try the operation of cutting fiber in practice. In

case that the fiber can’t be cut or the fiber is
broken before pressing up the lever, once screw
down the two hexagon bolts, and then retry the
process (3).

＜Front panel＞

Whole length of the blade will be used up at reaching fifth divisio

xchangeable at the manufacturer works. Please contact the sales agency.

n of the scale. The blade is

e

The blade
positioning plate

The scale

The hexagon bolts
（2 peace）

Slide the panel
one division of
scale

Screw down
Two hex bolts

The blade
positioning plate

The window
(the blade is seen
in the window)

Screw up the
two hexagon
bolts

Fig.64

！ Attention

！ Attention

Don’t push the plate sideward.

Fig.66

Fig.65

Fig.63

The

window

25

Cleaning the fiber chuck

In the case that fiber is broken
repeatedly at the chuck before
cutting, it is attributed to the fact
that chips or particles of optical
fibers are caught in the fiber chuck.

Please clean up the fiber chuck by
the following procedure.

(1) Insert a piece of clean cloth to

the gap between fiber chuck.

（Fig.69）

＊ Don’t use the dirty cloth or

breakable cloth. There is a
possibility of the trouble become
worse.

＊ Insert the cloth to the bottom. There

is a possibility that chips or particles
of optical fiber can’t be cleaned up.
（Fig.70）

(2) With inserting cloth, press up

the lever. It cause that cloth is
hold with chuck.（Fig.71）

＊ Please look that cloth is held with

chuck.（Fig.72）

(3) With holding cloth chucked,

pull cloth out of chuck obliquely
upward.（Fig.73）

＊ Don’t pull cloth in a horizontal

direction. There is a possibility that
the blade is damaged.（Fig.74）

＊ Cloth should be pulled out to the

end.

It is normal that cloth is caught by

cam.

＊ In the case that snips of cloth are

remained in chuck, insert tweezers
to pick it up.（Fig.75）

After you clean the fiber chuck, please check the problem is resolved by actually cutting the
fiber. In the case that the problem is not resolved despite several cleaning, please contact the sales
agency.

Fig.68

10mm

Fiber chuck

26

×

Bad Example

Hold

Fiber chuck

！ Attention

Fig.67

Fig.71

Fig.75

Fig.73

Fig.69

Fig.70

Fig.74

Fig.72