Nakamichi CR-3 Manual de usuario

Este manual sirve para los siguientes modelos

3

Tabla de contenidos

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-

Nakamichi

NAKA-00120

Service

Manual

Nakamichi

CR-3

CR-3A

CR-3E

CR-30

Discrete

Head

Cassette

Deck

CONTENTS

1.

2.

3.

4,

Toe

10.

11.

12.

13.

Geren

al

5556

212

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rato

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Procedures

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Cover

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and

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Cover

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5

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Jack

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Supply

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and

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Height

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Specifications:

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34

GENERAL

1.1.

Voltage

Selector

Voltage

selector

is

installed

on

the

rear

panel

for

Other

version

of

the

Nakamichi

CR-3.

This

voltage

selector

can

select

110, 127,

220,

or

240

V

at

customer’s

disposal,

1.2,

Package

Ass’y

and

Accessory

Ass’y

Schematic

ef,

No,

OFO4065A

OFO04066A

OF04067A

OF04101A

OF04087C

OF

04088C

OF03684A

0D04046A

0D04047A

OM034657A

OM05101A

OM05085A

OMO5056A.

OM05069A

OM05106A

OM05105A

OM05107A

0M05108A

0M05102A

OM05103A

Description

Package

Ass’y

Carton

Box

(CR-3)

Carton

Box

(CR-3A)

Carton

Box

(CR-3E)

Carton

Box

(CR-30)

Packing

L

Packing

R

Poly-Sheet

S

Warranty

Card

(CR-30)

User’s

Pack

(CR-30)

Voltage

Label

240V

(CR-3

(Australia)

&

CR-3E

(UK))

Voltage

Label

(CR-3

(Saudi

Arabia))

Point

of

Sale

Label

(CR-30)

Serial

No,

Label

(CR-3,

CR-3E

&

CR-30)

Serial

No,

Label

(CR-3A)

UL

Label

(CR-3A)

LA

Label

(CR-3A)

Canada

Label

(CR-3A)

UL/Canada

Label

(CR-3A)

Shipping

Label

Los

(CR-3A)

Shipping

Label

VAN

(CR-3A)

BEE

EN

Re

D

NRRR

RR

RRe

Schematic

Ref,

No.

Part

No.

Description

i—

0D03092B

0D04449A

0D04810A

OD04766A

0D04783B

0D04784B

0D04786B

OD04796A

0D04795A

OD04797A

0D04812A

0M03844B

DA04121A

Accessory

Ass’y

Poly-Bag

Important

Notice

(CR-3,

CR-3E

&

CR~30)

Important

Notice

(CR-3A)

General

Catalogue

(CR-3A)

Owner’s

Manual

(English/

German/French)

Owner’s

Manual

(Japanese)

Price

Card

(CR-30)

Tape

Catalogue

(CR-3A)

Tape

Catalogue

(CR-30)

Warranty

Card

(CR-3A)

Tape

Supplement

Power

Cord

Label

(CR-3E

(UK))

Pin

Cord

Ass’y

BEE

Eee

ee

2.

REMOVAL

PROCEDURES

2.1.

Top

Cover

Ass*y

and

Bottom

Cover

Ass’y

Refer

to

Fig,

2.1.

(1)

Loosen

F01

and

remove

FO2

(Top

Cover

Ass’y).

(2)

Loosen

F03

and

remove

F04

(Bottom

Cover

Ass’y).

Fig.

2.1

2.2.

Cassette

Case

Cover

Ass’y

Refer

to

Fig.

2.2.

(1)

Press

FO1

(Eject

Button)

to

open

FO2

(Cassette

Case

Cover

Ass’y).

(2)

Pull

FO2

(Cassette

Case

Cover

Ass’y)

upward,

Fig.

2.2

2.3.

Mechanism

Ass’y

Refer

to

Fig,

2,3,

(1)

Remove

the

Top

Cover

Ass’y

and

the

Bottom

Cover

Ass’y

referring

to

item

2.1,

(2)

Remove

the

Cassette

Case

Cover

Ass’y

referring

to

item

2.2,

(3)

Loosen

FO1,

F02

and

F03,

remove

F0O4,

and

disassemble

F05

(Mechanism

Ass’y).

Fig.

2.3

2.4.

Monitor

Switch

Joint

Refer

to

Fig, 2.4,

q@

(2)

Remove

the

Top

Cover

Ass’y

and

the

Bottom

Cover

Ass’y

referring

to

item

2.1.

With

pushing

F01

(Monitor

Switch

Joint)

in

the

direction

of

the

arrow

A,

pull

F01

(Monitor

Switch

Joint)

in

the

direction

of

the

arrow

B

to

remov

it.

'

Fig.

2.4

2.5,

Pin

Jack

P.C,.B.

Ass’y,

Power

Supply

P.C.B.

Ass’y,

and

Main

P.C.B.

Ass’y

Refer

to

Fig,

2.5,

Q)

(2)

(3)

(4)

)

(6)

Remove

the

Top

Cover

Ass’y

and

the

Bottom

Cover

Ass’y

referring

to

item

2.1,

Remove

the

Monitor

Switch

Joint

referring

to

item

2.4.

Loosen

F01

and

remove

F02

(Pin

Jack

P.C.B.

Ass’y).

Loosen

F03

and

remove

F04

(Power

Supply

P.C.B.

Ass’y).

Push

F05

(Hole

Plug)

with

the

top

of

screwdriver

to

remove

it.

Loosen

F06

and

lift

FO7

(Main

P.C.B.

Ass’y).

Note:

When

installing

the

Main

P.C.B.

Ass’y,

to

facilitate

instal-

lation,

place

the

Main

P.C.B.

Ass’y

so

that

the

tops

of

switches

on

the

Main

P.C.B,

Ass’y

come

in

contact

with

the

ends

of

push

buttons

as

shown

in

Fig.

2.6.

Fig,

2.6

2.6.

Front

Panel

Refer

to

Fig,

2.7,

(1)

Remove

the

Top

Cover

Ass’y

and

the

Bottom

Cover

Ass’y

referring

to

item

2.1,

(2)

Remove

the

Cassette

Case

Cover

Ass’y

referring

to

item

2.2.

(3)

Pull

out

F01,

FO2

and

FO3,

and

loosen

F04

and

F056,

(4)

With

pushing

claws

by

hand

as

shown

in

the

figure,

remove

F06

(Front

Panel),

2.7.

Bias

Tune

Volume

P.C.B.

Ass’y

Refer

to

Fig.

2.8.

@

(2)

(3)

(A)

(5)

Remove

the

Top

Cover

Ass’y

and

the

Bottom

Cover

Ass’y

referring

to

item

2.1.

Remove

the

Monitor

Switch

Joint

referring

to

item

2.4.

Remove

the

Main

P.C.B.

Ass’y

referring

to

item

2.5,

Remove

the

Front

Panel

referring

to

item

2.6.

i

Loosen

F01

and

FO2

with

a

special

nut

driver

or

with

pliers,

.and

remove

F038

(Bias

Tune

Volume

P.C.B,

Ass’y),

Main

RC.B.Assy

2.8.

Control

P,C.B,

Ass’y

Refer

to

Fig.

2.9,

q)

(2)

(3)

(4)

(6)

(6)

Remove

the

Top

Cover

Ass’y

and

the

Bottom

Cover

Ass’y

referring

to

item

2.1,

Remove

the

Mechanism

Ass’y

referring

to

item

2.3.

Remove

the

Monitor

Switch

Joint

referring

to

item

2.4,

Remove

the

Front

Panel

referring

to

item

2.6.

Loosen

FO1

and

F02

with

a

special

nut

driver

or

with

pliers

to

set

FO3

(Bias

Tune

Volume

P.C.B.

Ass’y)

free,

With

pushing

F03

(Bias

Tune

Volume

P.C.B.

Ass’y)

in

the

direction

of

the

arrow,

loosen

F04,

unhook

F05,

and

remove

F06

(Control

P.C.B.

Ass’y),

Fig.

2.9

2.9.

Head

Mount

Base

Ass’y

Refer

to

Fig.

2.10.

q@)

(2)

(3)

(4)

Remove

the

Top

Cover

Ass’y

and

the

Bottom

Cover

Ass’y

referring

to

item

2.1,

Remove

the

Mechanism

Ass’y

referring

to

item

2,3.

Loosen

F01

and

remove

F02

(Head

Mounting

Cover).

Loosen

FO3,

remove

FO4

and

FO05,

straighten

FOG

(Wire

Clamper),

and

lift

FO7

(Head

Mount

Base

Ass’y).

Note:

When

mounting

the

Head

Mount

Base

Ass’y,

follow

the

@)

(2)

(3)

(4)

5)

(6)

(7)

(8)

(9)

(10)

(11)

next

steps,

Refer

to

Figs.

2.11.1

and

2.11.2,

(a)

Insert

the

Plate

Washer

into

the

groove

of

the

shaft

by

hand

as

shown

in

Fig,

2.11.1.

:

(b)

Mount

F07

(Head

Mount

Base

Ass’y)

and

fasten

F03.

Then

push

the

Plate

Washer

with

a

blade

of

screw-

driver

to

set

the

Plate

Washer

free,

Refer

to

Fig.

2.11.2,

Fig.

2.10

TEST

TAPES

AND

GAUGES

400

Hz

Level

Tape

(DA09005B)

1

kHz

Track

Alignment

B

Tape

(DA09087B)

10

kHz

PB

Frequency

Response

Tape

(DA09003B)

15

kHz

PB

Frequency

Response

Tape

(DA09002B)

20

kHz

PB

Frequency

Response

Tape

(DA09001B)

15

kHz

Azimuth

Tape

(DA09004B)

3

kHz

Speed

and

Wow/Flutter

Tape

(DA039006C)

Tape

Travelling

Cassette

(DA09071A)

Reference

EXII

Tape

(DA09111A)

Reference

SX

Tape

(DA09110A)

Reference

ZX

Tape

(DA09109A)

Plate

Washer

R

Plate

Washer

L

-

Fig.

211.1

Fig,

2.11.2

2.10.

Power

Switch

Joint

Refer

to

Fig.

2.12,

(1)

Remove

the

Top

Cover

Ass’y

referring

to

item

2.1,

(2)

Pull

F01

(Power

Switch

Joint)

upward

to

remove

it,

Fuse

PC.B.

Assy

Fig,

2.12

(12)

EH

Tilt

Check

Gauge

S

(DA09088A)

(13)

Stroke

Check

Gauge

S

(DA09090A)

(14)

Tape

Guide

Height

Check

Gauge

S

(DAO9091A)

(15)

Tilt

Check

Gauge

S

(DA09039B)

(16)

Torque

Gauge

FWD

(DA09082A)

4.

MECHANICAL

ADJUSTMENTS

4.1,

Record

Head

and

Playback

Head

Tilt

Adjustment

Remove

the

Cover

Plate

Ass’y

by

loosening

two

screws

to

gain

access

to

the

head

block,

Refer

to

Fig.

4,1,

(1)

Remove

the

pad

lifter

from

the

playback

head,

(2)

Load

a

Tilt

Check

Gauge

S

(DA09039B)

in

the

cassette

deck,

(8)

Clip

the

grounding

terminal

of

the

Tilt

Check

Gauge

with

one

end

of

the

cord with

clip,

and

the

chassis

of

the

cassette

deck

with

the

other

end,

(4)

Remove

both

of

the

Height

Gears,

(5)

Set

the

cassette

deck

in

Play

mode.

Check

to

insure

whether

the

Beacons

Playback

Head

“Upper”

or

‘Lower’

and

Record

Head

‘“‘Upper’’

or

“Lower”

are

illuminating.

In

order

not

to

give

damages

onto

the

head

surfaces,

push

both

of

slide

knobs

of

the

Gauge

to

away

from

the

heads,

then

return

them

to

the

original

place

to

be

in

contact

with

record

head

and

playback

head

surfaces

after

Play

mode

is

securely

locked,

(6)

Beacon

Playback

Head

“Lower”

will

light

on

when

height

adjustment

screw

(PH)

turned

counterclockwise

but

play-

back

Head

“Upper”

when

clockwise.

Adjust

so

that

both

“Upper”

and

“Lower”

will

light

on

even

when

you

move

the

slide

knob

away

from

the

heads

and

then

return

it

to

the

original

place,

(7)

Same

procedures

will

apply

to

the

Beacons

Record

Head

“Upper”

and

‘Lower’,

except

for

the

height

adjustment

screw

(RH),

(8)

Set

the

cassette

deck

in

Stop

mode

and

fit

both

of

the

serrated

Height

Gears.

Then

set

the

cassette

deck

again

in

Play

mode

and

insure

all

of

the

4

Beacons

are

illuminating,

If

not,

(4)

through

(7)

will

have

to

be

repeated

till

satisfactory

results

are

obtained,

(9)

Mount

the

pad

lifter

on

the

Playback

head,

4.2,

Head

Base

Stroke

Check

Remove

the

Cover

Plate

Ass’y,

Refer

to

Fig,

4.2,

Note:

Before

you

conduct

this

adjustment,

afjust

with

a

“Tilt

Check

Gauge

8”

to

insure

freedom

from

tilt

on

the

play-

back

head

and

record

head,

(1)

Load

a

Stroke

Check

Gauge

S

(DA09090A)

in

the

cassette

deck,

(2)

Move

Record

Head

Indicator

and

Playback

Head

Indicator

to

the

direction

of

arrow

mark

“A”

with

your

finger

tip

and

then

set

the

cassette

deck

in

Play

mode.

Then

slowly

release

the

Indicators

and

insure

whether

each

of

the

Indicators

is

in

contact

with

record

and

playback

heads,

(3)

Check

to

insure

whether

the

line

“P”

on

the

Playback

Head

Indicator

meets

the

central

line

on

the

Indicator

Plate,

(4)

Check

to

insure

whether

the

line

“P”

on

the

Playback

Head

Indicator

locates

between

the

2

lines

on

the

Record

Head

Indicator,

thus

check

can

be

made

on

record

head

stroke,

4.3.

Erase

Head

Stroke

Adjustment

and

Tape

Guide

Height

Check

Remove

the

Cover

Plate

Ass’y

and

the

Head

Mount

Base

Ass’y,

Refer

to

Fig,

4.3,

(1)

Erase

Head

Stroke

Adjustment

(a)

Load

a

Tape

Guide

Height

Check

Gauge

S

(DA09091A)

in

the

cassette

deck,

;

(b)

Set

the

cassette

deck

in

Play

mode,

thus

check

can

be

made

on

erase

head

stroke

through

the

EH

Stroke

Indicator,

(c)

Check

to

insure

whether

the

erase

head

surface

is

aligned

with

red

line

on

the

EH

Stroke

Indicator.

If

not,

adjust

the

erase

head

stroke

by

loosening

screw

A

that

assembles

erase

head

with

erase

head

plate,

(a)

After

completion

of

adjustment,

screw

A

shall

be

locked

with

lock

tight

paint.

(2)

Supply

Tape

Guide

Height

Adjustment

(a)

Load

a

Tape

Guide

Height

Check

Gauge

S

(DA090914A)

in

the

cassette

deck,

(b)

Set

the

cassette

deck

in

Play

mode,

(ec)

Slide

the

Supply

Tape

Guide

Check

Bar

down

against

the

supply

tape

guide,

and

check

to

insure

that

the

Supply

Tape

Guide

Check

Bar

is

accepted

by

the

supply

tape

guide.

If

not,

adjust

the

supply

tape

guide

height

by

turning

screw

B.

(3)

Take-up

Tape

Guide

Height

Check

(a2)

Load

a

Tape

Guide

Height

Check

Gauge

S

(DA090914A)

in

the

cassette

deck.

(b)

Set

the

cassette

deck

in

Play

mode,

(c)

Slide

the

Take-up

Tape

Guide

Check

Bar

down

against

the

take-up

tape

guide,

and

check

to

insure

that

the

Take-up

Tape

Guide

Check

Bar

is

accepted

by

the

take-up

tape

guide.

Height

Gear

Stopper

(RH)

Height

Geor

(RH)

Height

Geer

(PH)

Height

Adj,

Screws(RH}

Indicator

Prate

Ploy

Mode

Height

Geor

Stopper

{PH}

Ploybock

Lower’

Fig.

4.1

Herght

Adj,

Screws(PH

Toke-up

Tape

Guide

Check

Bor

4.4,

Erase

Head

Height

and

Tilt

Adjustment

Refer

to

Fig,

4.4.

q@)

(2)

(3)

(4)

(5)

Remove

th

Cassette

Case

Cover

Ass’y,

Cover

Plate

Ass’y,

and

Head

Mount

Base

Ass’y.

Load

an

EH

Tilt

Check

Gauge

S

(DA090884A)

in

the

cassette

deck,

Set

the

cassette

deck

in

Stop

mode,

Check

to

insure

whether

one

of

the3

Beacons

is

illuminating,

Look

down

the

mirror

and

slowly

tum

the

Screw

“Height’’

counterclockwise

(or

clockwise)

so

that

the

two

horizontal

lines

on

the

mirror

will

become

superposed

on

the

line

(in

different

color)

of

the

erase

head,

and

check

to

insure

whether

the

first

Beacon

is

illuminating.

:

Turn

Screw

“‘Tilt’?

counterclockwise

(or

clockwise)

to

light

on

the

second

Beacon.

Excessive

turning

will

cause

the

first

(6)

(1)

(8)

Beacon

to

light

off.

Adjustments

of

Screw

“Tilt”

will

there-

fore

be

conducted

till

both

of

the

first

and

the

second

Beacons

illuminate.

:

Turn

Screw

“Azimuth”

counterclockwise

(or

clockwise)

to

light

on

the

third

Beacon,

Excessive

turning

will

cause

either

the

first

or

the

second

Beacon

to

light

off,

and

therefore

adjust

Screw

“‘Azimuth”’

until

all

of

the

3

Beacons

illuminate,

Check

to

insure

whether

the

horizontal

line

on

the

mirror

corresponds

to

that

on

the

erase

head.

If

not,

(4)

through

(7)

will

have

to

be

repeated

till

satisfactory

results

are

obtained,

After

completion

of

adjustment,.3

pes.

of

screws

shall

be

locked

with

lock

tight

paint,

Note:

Before

use

of

this

gauge,

check

to

insure

freedom

from

dust

Fig.

4.4

4.5.

Playback

Head

and

Record

Head

Height

Adjustment

and

Azimuth

Alignment

Refer

to

Fig,

4.5.

(1)

(a)

(b)

(c)

(a)

(e)

@)

Playback

Head

Height

Adjustment

and

Azimuth

Alignment

Set

the

Monitor

switch

to

Tape

and

connect

an

AC

voltmeter

to

the

Output

Jacks,

Load

a

1

kHz

Track

Alignment

B

Tape

(DA09087B)

and

set

the

cassette

deck

in

Play

mode.

Turn

the

PH

Height

Gear

until

the

outputs

of

both

channels

become

minimum,

Load

a

15

kHz

Azimuth

Tape

(DA09004B)

and

set

the

cassette

deck

in

Play

mode,

Turn

the

PH

Azimuth

Alignment

Screw

until

the

outputs

of

both

channels

become

maximum,

Repeat

above

steps

(b)

through

(e)

two

or

three

times

to

obtain

optimum

performance,

PHHeight

Adjustment

PH

Azimuth

Alignment

or

dirts,

or

overflow

in

the

groove

of

the

erase

head

surface.

(2)

‘Record

Head

Height

Adjustment

and

Azimuth

Alignment

(a)

Set

the

cassette

deck

in

Stop

mode,

(b)

Set

the

Monitor

switch

to

Tape,

Eq.

switch

to

70

ws

and

Tape

Selector

switch

to

ZX,

(c)

Load

a

reference

ZX

tape

and

connect

an

AC

voltmeter

to

Output

Jacks,

(d)

Feed

in

400

Hz

(0

dB)

to

the

Input

Jacks,

(e)

Set

the

cassette

deck

in

Record

and

Play

mode

and

tum

the

RH

Height

Gear

until

the

outputs

of

both

channels

become

maximum,

(f)

Feed

in

15

kHz

(—20

dB)

to

the

Input

Jacks

and

turn

the

RH

Azimuth

Alignment

Screw

until

the

outputs

of

both

channels

become

maximum,

(g)

Repeat

(d)

to

(f)

two

or

three

times

to

obtain

optimum

per-

formance.

RH

Height

Adjustment

{

{

RH

Azimuth

Alignment

Fig.

4.5

4.6.

Pressure

Adjustment

of

Take-up

Pressure

Roller

Refer

to

Fig.

4.6.

(1)

Set

the

cassette

deck

in

Play

mode.

(2)

Measure

the

torque

of

the

Take-up

Pressure

Roller

and

check

whether

the

torque

is

in

a

range

of

320

+50

g-cm,

(3)

If

torque

is

out

of

the

range,

correct

it

by

changing

the

instal-

lation

point

of

the

Pressure

Roller

Spring,

Fig.

4.6

4.7,

Tape

Travelling

Check

Load

and

play

back

a

Tape

Travelling

Cassette

and

check

the

following:

(1)

Tape

is

in

contact

with

heads

sufficiently.

(2)

Tape

waving

is

small

on

the

heads

and

pressure

rollers,

(8)

Tape

is

free

from

waving

or

slippage

from

the

tape

guides,

Fig,

4,7

4.8,

Eject

Damper

Adjustment

Refer

to

Fig,

4.8,

Load

a

cassette

tape,

and

with

opening

the

Cassette

Case

by

pressing

the

Eject

button

and

closing

it

by

hand,

adjust

the

speed

of

damper

action

by

the

Adjustment

Screw.

Increase

Domper

Adjustment

Screw

Eject

Domper

Fig.

4.8

4,9,

Reel

Motor

Speed

Adjustment

in

Play

Mode

(1)

To

warm-up

the

cassette

deck,

load

a

C-60

cassette

tape

and

set

the

cassette

deck

in

Play

mode,

(2)

After

more

than

four

minutes,

load

a

Torque

Gauge

FWD

(DA09082A)

and

set

the

cassette

deck

in

Play

mode,

(3)

Adjust

VR601

on

the

Main

P.C.B.

Ass’y

to

obtain

exactly

50

g-cm

on

the

torque

gauge.

.

4.10.

Tape

Speed

Adjustment

Refer

to

Fig,

4.9.

(1)

Connect

a

frequency

counter

to

the

Output

Jacks.

(2)

Load

a

3

kHz

Speed

and

Wow/Flutter

Tape

(DA09006C)

and

play

it

back,

(3)

Adjust

the

Tape

Speed

Adjustment

Volume

incorporated

in

the

Capstan

Motor

to

obtain

3,000

Hz

on

the

frequency

counter.

CCW:

Motor

drives

slowly.

CW:

Motor

drives

fast,

Increase

Capstan

Motor

Fig.

4.9

4.11,

Lubrication

The

tape

transport

is

of

a

lubrication-free

type

mechanism,

When

the

following

parts

are

replaced,

apply

the

specified

lubricant.

(1)

Molykote

(R)

Grease

(X5-6020)

Cam

Motor

Pulley

Thrust

portion

on

the

Capstan

Shaft

(2)

FLOIL

GB-TS-1

Washer

between

Ree!

Hub

Ass’y

and

Back

Tension

Spring

(3)

Diamond

Oi]

(EP-56)

Reel

Hub

Shaft

(4)

Anderol

456

Capstan

Shaft

Note:

We

suggest

that

you

use

the

above

specified

lubricant

or

equivalent

type.

The

company

dealing

in

the

above

lubricant

is

as

follows:

(a)

Molykote

(R)

Grease

(X5-6020)

Dowcorning

Co.,

Ltd.,

1-15-1

Nishishinbashi,

Minato-

ku,

Tokyo,

Japan

(b)

FLOIL

GB-TS-1

Kanto

Chemicals

Co.,

Ltd,,

2-7

Kanda

Sakuma-cho,

Chiyoda-ku,

Tokyo,

Japan

{c)

Diamond

Oil

(EP-56)

Mitsubishi

Oil

Co.,

Ltd.,

1-2-4

Toranomon,

Minato-ku,

Tokyo,

Japan

(d)

Anderol

456

Toyo

Kokusai

Oil

Co.,

Ltd.,

3-3-5

Hatchobori,

Chuo-

ku,

Tokyo,

Japan

PARTS

LOCATION

FOR

ELECTRICAL

ADJUSTMENT

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