Minxray Hf100 User manual

HF100

»

HF100H

SERVICE

MANUAL

MINXRAY...

3611

Commercial

Avenue

Northbrook,

Illinois

60062-1822,

U.S.A.

Phone:

(847)

564-0323

Fax:

(847)

564-9040

Toll

Free:

(800)

221-2245

HF100/HF100H

SERVICE

MANUAL

98JAN9

This

manual

is

established

for

repair:

adjustment

of

portable

x-ray

device

HF100

and

HF100H.

Copy

and

transfer

without

notice

is

prohibited.

contents

1.Introduction

2.Specifications

3.Operating

procedures

4.Pre-adjustment

5.Re-adjustment

ofkV

6.Re-adjustment

of

Pre-heat

time

and

mA

7.Re-adjustment

of

exposure

time

8.Sample

of

output

waveform

9.Circuit

diagram

10.Reference

materials

11

13

16

17

18

19

1.

Introduction

This

service

manual

is

applied

for

HF100

and

HF100H

x-ray

unit.

HF100H

is

human

use

version.

But

there

are

mechanical

and

electric

parts

which

are

not

exchangeable.

So,

replacement

on

repair

should

be

done

carefully.

Major

difference

between

HF100

and

HF100H

are

as

follows.

Parts

HF100

HF100H

Collimator

mounting

ring

for

R-120H

for

R70

Key

board

PC.Board

(M3107A)

20mA

for

HF100H

Timer

P.C.Board

(M3108A)

20mA

fixed

type

for

HF100H

Control

P.C.Board

(M9112)

exchangeable

Inverter

(M9111)

exchangeable exchangeable

Insert

Box

exchangeable exchangeable

|

Collimator

transformer

for

R-120H

for

R70

2.

SPECIFICATIONS

POWER:

Range

Minimum

voltage

with

no

load

---------

Maximum

voltage

with

no

load

--------

Frequency

Electricity

consumption

at

120V

------

Maximum

voltage

consumption

--------

100

~

130VAC

100VAC

140VAC

50/60Hz

minimum

20A

(40kV)

maximum

32A(100kV)

3.5kVA

+

10%

NOTE:

This

unit

would

be

severely

damaged

if it

is

used

with

incorrect

line

voltage.

OUTPUT

:

Inverter

:

120kHz

high

frequency

inverter

system

with

neutral

ground

circuit,

2kW

-

60kHz

inverter.

tube

potential

feedback

system

tolerance

+3kVor

+10%

Filament

circuit:

0.5

Watt

-

45kHz

inverter

tube

current

feedback

system

tolerance

+10%

pre-heat

time:

approximately

2sec.

WARM

UP

TIME:

Approximately

10

seconds

after

each

exposure

and

after

the

initial

Power

On.

X-RAY

OUTPUT

:

Maximum

tube

voltage:

100kV

+10%

Minimum

tube

voltage:

40kV

10%

(adjusted

at

97.5

—

99kV)

(adjusted

at

41

—

39kV)

kV

switch:

2kV

steps

tube

current

:

20mA

+10%

constant

(adjusted

at

19mA)

timer

range

-

HF100:

0.01

—

2.00

sec.

0.01

sec.

steps

HF100H

:

0.08

—

4.00

sec.

0.01

sec.

steps

(adjusted

at

each

value

£1%

of

time

base

pulse

of

100Hz)

X-RAY

TUBE

:

TOSHIBA

D-124S

focal

spot

size:

1.2mmX1.2mm

target

material:

tungsten

angle

:

16°

anode

heat

storage

capacity:

14kJ

(20.0kHU)

COLLIMATOR:

Continuously

adjustable

light

beam

type

with

central

ray

indicator,

and

cassette

size/distance

to

aid

in

correct

positioning.

R-120H

On

time

:

90

sec.

bulb:

Fuji

Lamp

Inc.,

No.

JC12V40W

product

life

:

longer

than

50

hours

Tlluminance

:

over

160

lux

at

21”

SID

Contrast

ratio:

over

3:1

at

3:1

at

21”

SID

R70

Refer

instruction

manual

of

Advantech.

FILTRATION:

inherent

filtration

2.2mm

Al

collimator

filtration

0.5mm

Al

total

filtration

2.7mm

Al

WEIGHT:

HF100

-----

16.5kgs

HF100H

---

18.5kgs

SIZE

:

HF100

---

29

cm

(W)

X

23

cm

(H)

X

40.0

cm

(L)

HF100H

---

29

cm

(W)

X

23cm

(H)

x

38.5

cm

(L)

POWER

CORD:

3.6m

EXPOSURE

CORD:

3.0m

3.

OPERATING

PROCEDURES

CONNECTION:

After

confirming

POWER

CORD

and

EXPOSURE

SWITCH

are

usual

condition,

connect

them

to

main

body

of

x-ray

unit

certainly.

(If

connector

has

lock,

confirm

it

is

locked.)

Confirm

POWER

SWITCH

is

OFF

and

connect

POWER

CORD

to

wall

receptacle

of

proper

mains.

(When

you

used

extension

cord,

3.5kW

should

be

obtained.)

POWER

ON:

Set

POWER

SWITCH

on

control

panel

to

on,

then

each

indicator

will

be

turned

on.

When

the

unit

is

warming

up,

exposures

can

not

be

taken.

After

approx.

10

sec.,

WARM

UP

indicator

will

go

off.

The

unit

is

now

ready

to

use.

CAUTION

DO

NOT

SWITCH

ON

AND

OFF

QUICKLY

IN

A

SHORT

TIME.

WHEN

TURNING

ON

AGAIN

AFTER

TRUNING

OFF,

WAIT

FOR

AT

LEAST

1

MINUTE.

OTHERWISE,

HIGH

FREQUENCY

INVERTER

CANNNOT

WORK

PROPERLY.

kV

SETTING:

Set

kV

in

the

range

of

40kV

to

LOOKV.

TIMER

SETTING:

Set

timer

in

the

range

of

(HF100

:

0.01

sec.

to

2.00

sec.)(HF100H

:

0.08

to

4.00

sec.)

depends

on

subject,

distance

and

screen/film

combination.

Time increments

are

0.01

sec.

ADJUSTMENT

OF

RADIATION

FIELD

:

Pressing

the

collimator

switch

will

illuminate

the

field

for

approx.

(HF100:

90sec.)

HF100H

:

30

sec).

Adjust

light

field

to

position

of

radiograph

by

two

knobs

for

adjustment

of

opening.

During

this

time,

use

the

adjustment

knobs

to

size

the

radiograph

as

you

need.

RADIOGRAPHY

:

Make

sure

that

WARM

UP

indicator

is

OFF

before

pressing

exposure

switch.

CAUTION

WARM

UP

INDICATOR

BECOMES

OFF

AFTER

10

SEC.

FROM

POWER

ON.

WARM

UP

INDICATOR

BECOMES

OFF

AFTER

10

SEC.

FROM

EACH

EXPOSURE.

IF

WARM

UP

INDICATOR

IS

ON,

RADIOGRAPHY

IS

IMPOSSIBLE.

Make

sure

all

WARNING

LAMPS

are

off.

After

all

safety

checks,

press

only

first

stage

of

EXPOSURE

SWITCH.

STANDBY

indicator

goes

off

after

1

sec.

Then,

unit

is

ready

for

exposure.

Press

second

stage

of

EXPOSURE

SWITCH.

X-RAY

indicator

is

lit

and

radiography

is

executed

for

the

time

set.

The

EXPOSURE

SWITCH

is

a

DEDMAN

style.

So,

if

the

button

is

released,

exposure

is

stopped.

So,

hold

the

button

until

exposure

is

complete.

WARM

UP

indicator

will

light

after

exposure.

X-RAY

BUZZER

is

ON

and

OFF

(only

HF

100).

-4-

NOTE:

The

first

stage

of

EXPOSURE

SWITCH

is

pre-heat

of

filament.

DON’T

KEEP

ONLY

FIRST

STAGE

OF

EXPOSURE

SWITCH

“ON”

LONGER

THAN

30

SEC.

POWER

OFF:

When

the

POWER

SWITCH

is

pressed,

all

of

indicators

on

the

control

panel

are

off.

WARNING

LAMP:

HF100/HF100H

have

2

kinds

of

warning

lamps.

If

either

of

them

is

lit,

x-

ray

cannot

be

generated.

Each

detail

is

as

follows.

KIND

OF

WARNING

LAMP

DETAILS

COUNTERMEASURE

WARM

UP

The

internal

circuit

is

|

Wait

until

light

goes

off.

warming

up.

ERROR

Unit

malfunction.

Stop

exposing

and

follow

steps

below.

x

If

ERROR

indicator

is

lit

even

when

EXPOSURE

SWITCH

BUTTON

is

released,

it

means

an

unusual

situation

has

been

occurred.

Therefore,

turn

off

POWER

SWITCH,

wait

3

minutes,

then

start

procedures

over

again.

This

unit

generates

x-ray

by

an

inverter.

Therefore,

it

requires

warm

up

time

to

be

stable

after

power

on

and

each

exposure.

When

WARM

UP

indicator

is

off,

warm

up

is

finished.

4.

PRE-ADJUSTMENT

+

Each

PC

Boards

deliverd

from

Mikasa

Factory

have

already

been

adjusted.

[L

24VDC

power

supply

adjustment]

(SVB24SB)

Check

output

(DCV)

at

Red

(+)

and

Black

(-)

wires.

-Adjust

VR

to

be

24VDC

+0.

3V

2.

M3108A

adjustmenti

(refer

page

7)

kV

adjustment:

kV

is

decreased

by

turning

clockwise.

|

1.

2.

This

adjustment

is

need

the

special

test

equipment

(HF

tester)

Check

the

DC

voltage

between

the

kV

test

point

(+)

and

(-)

on

the

HF

tester.

|

Set

the

kV

selector

to

100kV

and

turn

VRI

(M3108A)

so

that

the

DC

voltage

is

5.0

VDC.

Check

the

each

kV.

Finaly

check

the

kV

by

using

an

external

kV

tester

such

as

the

Victoreen

NERO.

The

readings

will

indicate

a

little

lower

than

the

actual

output

because

of

the

tester

dynamics

for

high

frequency

x-ray

production,

so

don't

adjust

over

97kV

as

indicated

by

testing

device.

mA

adjustment:

mA

is

decreased

by

turning

of

VR5

clockwise.

1.

2.

This

adjustment

is

need

the

special

test

equipment

(HF

tester)

Check

the

DC

voltage

between

the

mA

test

point

(+)

and

(-)

on

the

HF

tester.

Set

the

mA

indicator

to

20mA

and

turn

VR5

(M3108A)

so

that

the

DC

voltage

is

2.0

VDC.

Exposure

time

adjustment:

[Exposure

time

is

decreased

by

turning

clockwise.

Time

base

is

100

Hz

(

10

msec.).

When

short

of

JP2

is

pulled

out,

X-RAY

LED

is

lit

not

timer.

Measure

voltage

between

of

TIME

terminal

and

GND

terminal

by

Oscilloscope,

and

adjust

by

turning

VR6.

IMPORTANT

Disconnect

the

connector

JP2

on

M3108A

PC

board

before

pull

out

short

of

X-ray.

Otherwise,

inverter

board

will

work

and

X-ray

will

be

generated

unrelated

with

timer

setting

and

X-ray

unit

might

be

broken.

*

Put

in

and

pull

out

connectors

at

POWER

OFF.

12V

—

1

0mS

一

%

TIME

BASE

WAVEFORM

REFFRENCE:

There

are

three

short

pins

on

M3108A

(

LBD,

10SEC

and

TEST).

Each

factors

are

as

follows.

LBD:

When

put

in,

lighting

time

of

collimator

is

45

sec.

When

pull

out,

it

is

90

sec.

10SEC:

When

put

in,

WARM

UP

time

is

1

sec.

When

pull

out,

it

is

10

sec.

This

short

is

for

adjustment

at

factory

before

shipment.

So,

don't

use

the

unit

with

short

pin.

TEST:

Never

pull

out

this

short

pin.

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adjustments|

(

refer

page

9)

adjustment

of

followings

+

over

voltage

protection

circuit

(

VRI

)

+

over

current

protection

circuit

(

VR2

)

+

DC

voltage

adjust

circuit

(

VR3)

adjusting

the

DC

voltage

have

to

use

special

equipment.

(4.

M9112

PC

board

Adjustments|

(

refer

page

10)

Adjustment

of

frequency

of

Inverter

board.

(VRI)

Adjustment

of

Pre-heat

time.

(VR3)

Adjustment

of

kV.

(VR4)

Adjustment

of

mA.

(VR5)

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PC

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adjustment

has

to

be

done

after

connect

all

of

connectors

completely

But

actual

exposure

is

not

necessary.

*

Each

PC

boards

delivered

from

Mikasa

Factory

have

already

been

adjusted.

1.

Adjustment

of

VR3

(

DC370Y

)

Adjust

voltage

between

370V

(+)

and

GND

(-)

to

be

368.5

-

372V

by

turning

VR3.

Voltage

is

increased

by

turning

clockwise.

|

2.

Adjustment

of

VR2

(

Over

Current

Protection

circuit)

Adjust

voltage

between

OCP

(+)

and

GND

(-)

to be

1.09

-

1.11Y

by

turning

VR2.

[Voltage

is

increased

by

turning

clockwise.

|

3.

Adjustment

of

VRI

(

Over

Voltage

Protection

circuit

)

Adjust

voltage

between

OVP

(+)

and

GND

(=)

to

be

@V

by

turning

VRI.

Woltage

is

decreased

by

turning

clockwise.

|

If

actual

measured

voltage

would

be

B,

a

can

be

calculated

as

following.

a=B

x

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This

adjustment

has

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be

done

after

connect

all

of

connectors

completely.

But

actual

exposure

is

not

necessary.

*

Each

PC

boards

delivered

from

Mikasa

Factory

have

already

been

adjusted

1.

Adjustment

of

FQI

Adjust

frequency

between

FQ]

(+)

and

GND(-)

to

be

120kHz

by

turning

VRI.

[Frequency

is

increased

by

turning

clockwise.

2.

Check

of

FQ2

Check

if

frequency

between

FQ2

(+)

and

GND(-)

is

90kHz

+5%.

3.

Adjustment

of

Pre-Heat

voltage

Adjust

voltage

between

PRE

(+)

and

GND(-)

to

be

0.

43V

by

turning

VR3

Voltage

is

increased

by

turning

clockwise.

|

4.

Set

VR4

(=EP

SET)

to

be

center.

6.

Set

VR5

(=IP

SET)

to

be

center.

-

10

-

5.

Readjustment

of

kV

This

adjustment

has

to

be

done

after

connect

all

of

connectors

completely

Actual

exposure

is

not

necessary.

Note

1:

This

adjustment

requires

that

an

exposure

be

made.

Please

observe

all

radiation

precautions.

Note

2:

This

adjustment

must

be

done

whenever

an

insert

or

an

inverter

board

(M9101B

PCB)

is

replaced.

Equipment:

Dual

trace

storage

oscilloscope

and

DC

voltmeter.

Oscilloscope

settings:

Ep

@M9102B

Channel

1

|

Volt/Div.

Ip

@M9102B

Channel

2

0.5

Volt/Div

Time

10

mSec/Div

DC

Voltmeter:

Positive

prove

kV

@9102B

Negative

probe

chasis

ground

X-ray

unit

setting:

70kY

-

0.1

sec.

Adjustment

VR:

VR4

@M9112B

Check

the

kV by

oscilloscope,

and

adjust

average

of

peak

value

of

EP

wave

form

by

VR4

to

be

3.

4V.

After

the

adjustment,

set

X-ray

unit

to

100kV

and

adjust

average

of

peak

value

of

EP

wave

form

by

VR4

to

be

4.

4V.

CAUTION)

Check

the

kV

by

using

an

external

kV

tester

such

as

the

Victoreen

NERO.

And

do

not

adjust

over

100kV

as

kV

tester

has

deviation

of

+3kV

itself.

Adjust

between

97.5

て

99kV.

-

11-

5-1.

(Adjustment

of

70kV

by

turning

VR4]

Adjust

the CHI

Tek

Run:

SkS/s

4

Sample

1

ο

eee

wee

em

et

eee

tae

5-2.

[Adjustment

of

100kV

by

turning

VR4

(EP)

by

VR4

to

be

4.9V

+0.5V.

Adjust

the

CHI

Tek

Run:

SkS/5

Sample

we

7

m

It

pent

Soe

taht

at

инь

l

vp

Ανω

K

риа

вне

азов

B

ré

or

ry

—

koz

9

(EP)

by

VR4

to

be

3.4V

+0.5Y.

kV

is

increased

by

turning

clockwise.

|

art

]

-

ーー・ーー…

ーーーーーーーー・

ーー

Chit

High

34V

Chi

Max

3.72V

+

QD

TE

TM

ZT

τν

kV

is

increased

by

turning

clockwise.

Chi

High

3.94

V

ChI

Max

6.7

V

-

15

-

6.

Readjustment

of

Pre-Heat

and

mA

This

adjustment

has

to

be

done

after

connect

all

of

connectors

completely.

Actual

exposure

is

necessary

Note

1:

This

adjustment

requires

that

an

exposure

be

made.

Please

observe

all

radiation

precautions.

Note

2:

This

adjustment

must

be

done

whenever

an

insert

or

an

M9112

Board

is

replaced.

Equipment:

Dual

trace

storage

oscilloscope.

Oscilloscope

settings:

Ep

@M9112

Channel

I

1.0

Volt/Div.

Ip

@M9112

Channel

2

1.0

Volt/Div

Time

10

mSec/Div

X-ray

unit

setting:

60kY

-

0.1

sec.

80kY

-

0.1

sec.

Adjustment

VR:

VR3

@M9112

Set

kV

to

82kV・20mA.

Adjust

Pre-heat

time

to

30

msec

+10%.

[Pre-heat

time

is

decreased

by

turning

clockwise.

|

VR5

@M9112

Adjustment

of

mA.

Adjust

to

19mA.

-

13

-

6-1.

[Adjustment

of

Pre-heat

Time

by

turning

VR2-VR3|

1.

Pre-heat

Time

is

short.

Make

Pre-heat

Time

longer

by

turning

VR3

counterclockwise.

т

I |

1

!

1

ーーーーー

+

-----

+

ーーニニ

ーー

レー

ニニ

ーー

トーニニ

ーー

時

ニニ

ーー

ニー

トーー

ニ

ーー

キル

ニニ

ーー

ニー

キオ

ニニ

ーーー

キー

ニニニー

1 i

,

U

1

ἵ-----

ヒュ

ーー

ニー

トーー

ニ

ーー

ヒー

ニニーー

トーー

ニ

ーー

ニー

キー

ニニ

ーー

ネー

ニニ

こも

ニニ

ーー

ニー

ネー

ニー

ニーニー

1

!

{

giant

n

か

ーー

gie

piper.

i i

po.

rr

了----r-----r---~--r-----g-----r-----

1-----1-----1-----

1

bem

ーー

トー

ニニ

ニー

トー

ニニ

ーー

トー

ニー

ニオ

ト

<

ニー

ニキ

ーー

ここ

1

に

ーーここ

|

ーー

トーーーーー

ト

ーーーーー

L-

bo

Ed

i

|

ーーー

ト

ーー

ニーー

トニ

ーー

ニー

ヒー

ニー

トー

ニーーー

ニ

ーー

ニー

と

ーー

ニーー

も

ニニ

ーー

ニュ

ーー

ニニ

ニー

タ

ーー

ニーーー

i

1

,

:

|

ーーーーー

benne

peer

ーーー

ト

ーー

ニー

キー

ニー

る

ニー

ニーー

トーーーーー

ャ

ーー

ニー

ニャ

ーー

ニー

ネー

ニーーー

1 1

a +

!

|

1

—

一

>

20msec

+

CH2

(IP)

+

GND

level

2.

Pre-heat

Time

is

long.

Make

Pre-heat

Time

shorter

by

turning

VR3

clockwise.

トー

ニー

—

4

Omsec—

3.

Pre-heat

Time

is

correct.

トニ

ーーーー

ト

ーー

ニー

シー

ニニ

ーー

に

レー

ニーニー

|

ニー

テニ

ーー

ニー

ヒー

ニー

ニーーー

ヒ

ーー

ニー

に

ーー

ニニ

ーー

30msec

*

Acceptable

limit

20

msec

-

40

msec

-

14-

©

CH2

(IP)

+

GND

level

+

CH2

(IP)

を

GND

level

6-2.

lAdjustment

of

mA

by

turning

VRS)

X

Adjust

average

of

peak

value

of

IP

wave

form

to

be

1.

9V

by

turning

VRS.

XHF100:

80kV-20mA

|

-----

|

-----

|

-----

ее

----

"デー

=

に

キー

に

vr

za

İaşe

pde

p

maes

+

CHI

(E

P

)

—

+

CH2

(IP)

1

peo

1.9V

|

|.

1

«

GND

level

-

15

-

7.

Readjustment

of

exposure

time

This

adjustment

has

to

be

done

after

connect

all

of

connectors

completely.

Actual

exposure

is

necessary.

Note

1:

This

adjustment

requires

that

an

exposure

be

made.

Please

observe

all

radiation

precautions.

Check

the

exposure

time

by

using

an

external

exposure

time

meter

such

as

the

VICTOREEN

NERO.

X-ray

unit

setting:

82kV

-

0.5

sec.

Adiustment:

Exposure

time

is

decreased

by

turning

clockwise.

(VR6

on

the

M3108A

PC

board)

-

16

-

MinXray HF100 User manual

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