GymnaUniphy Thermatur 250 User manual

Service

Instructions

for

the

Contents

一

一下

=

下

BRON

-人

NN

2.2

2.3

2.4

2.5

3.1

3.2

3.3

3.4

3.5

3.6

3.7

thermatur

(Issue:

Construction Casing Frame Control Cable

Electrical Power

Relay

Controlcomputer Interface

Amplifier

i

desk

connections

and

functional

supply

PCB

(A100),

(A200)

(A500).……… ぼ …… せ …

(A300).… せせろ

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descriptionS......................

high-voltage

(A4400).....................................................

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Magnetronanddecouplingunit(A003,A004)..........................................

Testoftheunit...........................................

Testofthepowersupply...............................................

Test

of

the

Test

and

Test

and

Test

of

the

Test

of

the

Fregquency

magnetron calibration adjustment

high-voltage

magnetron

measurement

coil

control...

of

the

high-voltage

of

the

RF

switching-off

current

sise

power

m250

01.

12.

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transformer

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7 8 8 9

9 11 11 11

4.1

4.2

4.3

4.4

4.5

7.1

7.2

7.3

7.4

Test

instructions

Interface

Amplifier

Rectifier

Relay

Control

Hints

High-voltage Measurement

Test

Measurement

(A500).........................,,....,.....

(A300).................

(A600)

PCB

computer

fortroubleshooting(Table

for

sub-assembly

O

of

the

for

(AZ200)

sise

test

of

the

leakage

protective

of

earth

the

insulation

printed

circuit

replacement...

current

connector..….............................................

resistance

boards

2)................................................................

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of

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(PCBSs)

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Annexes:

Structural Overall Overall

Overall

Relay Relay

Relay Rectifier

Rectifier Rectifier Amplifier Amplifier

Amplifier

view view

view

PCB PCB

PCB

(Wiring

(Component (List

Interface

interface Interface

Control Control

Control

computer computer

computer

drawings

of

the

of

the

of

the

(Wiring (Component

(List

of

diagram)

of

replaceable (Wiring (Component (List

(Wiring

(Component (List

diagram)

of

replaceable

diagram)

of

replaceable

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(List

unit

(Block

unit

(Block

unit

(mains

diagram)

diagram) diagram)

arrangement)

replaceable

arrangement)

parts)

arrangement)

parts)

arrangement)

parts)

diagram)

of

replaceable

circuit)

parts)

arrangement)

parts)

(Fig. 1 and

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2)

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922.017-010:000(2)

.

922.017-010:000(2)

serial

no.

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115-Vac

.

922.017-010:000(3)

serial

no.

0087

for

230-Vac

serial

no.

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for

115-Vac

922.017-160:000

922.017-170:000

922.017-180:000

922.017-190:000

922.017-190:000 521

995

151

3

521

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151 3 page

521

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151 3 page 1 to

Sp

S1 Sp

S

Sp

S1

page

sheet sheet

units units

sheet

units units

page

6

5

5 5

6

1.1 & 2

1.1

to

4

1

The of

them

Construction

microwave

can

be

therapy

blocked.

unit

"thermatur

m250"

is a portable

stand-type

unit

on

guide

rollers,

two

Fig. 1 and 2 show

1.1

After

screwing

disconnected. accessible.

When

taking

conductor

1.2

By

unit.

1.3

The

screws (15) plug

earthing

Casing

loosening

out

the

face

off

the rear

and

Frame

means

control

can

of

Control

(15).

be

tightened

desk

Through

connections

contact.

the

Then,

mains

additional

the

face

is

removed

wall

desk

is

to

principle

three

clamping

screws

the

face

the

these

cord

disconnected.

welded

fastened

the

openings

after

the

control

of

design

(13)

the

wail

can

rear

screws

holders

at

the

in

alignment

computer

of

screws

face

be

completely

screws

are

to

the

upper

the

face

of

the

unit.

(4)

wall

can

(14)

for

be

unscrewed

frame

brackets

wall,

the

desk.

X401,

(hexagon

be

retracted

removed,

fastening

carries

of

the

which

For

X402

socket

and

the

rear

and

the

plug

the

individual

are

frame

closed

by

dismounting

and

X403,

head

screws, 3 mm)

the

earthing

main

sub-assemblies

wall

are

connectors

sub-assemblies

means

by

the

caps

the

desk

to

the

mains

contact

accessible.

of

earthing

of

the

four

(7),

the

disconnect

switch

and

(12)

are

For

of

the

desk

screws

the

and

The

plug

connections

(11)

is

pressed

For

dismounting

and

take

off

ATTENTION:

1.4

The earthing

The

in

accordance

the The

(A001),

supply

earthing

bottom

Three

other.

there

Cable

unit

is contact.

mains

drawer.

primary

mains

(A100)

lines

of

secondary

The

separately

out

the

knob

The

connections

to

be

connected

connection

with

cable

filter

and

connecting

the

frame.

cable

DC

supply

to

the

main

of

the

desk.

Control

(lift

spacers

element

the

voltage

harnesses

(A002),

the

are

to

Relay

computer

cover

transformers

the

harnesses

power

interface

is

(A500)

switch

by

loosely

the

mains

of

the

version

contain

PCB

(1001

casing

connect

lead

from

and

are

easily

PCB

(printed

means

inserted

unit

(cf.

the

(A200),

parts

of a small

between

via a removable

(combined

name

interconnections

mains

and

T002).

to

the

individual

the

A100

control

computer

accessible

circuit

screwdriver

PCB

power

element

plate);

the

switch

The

centralized

electronic

sub-assembly

(A400).

when

board)

the

unscrew

and

desk!

cord

equipped

A001)

fuse

between

(S001),

primary

contains

elements

mains primary

harnesses

earthing terminal

sub-assemblies

to

the

complete

the

loosen

the

with a non-fused

the

are

accommodated

connection

terminals

also

amplifier

rocker

fastening

screw).

fuse

elements

element

of

contain

X001

among

A300

and

switch

nuts

in

power

the

at

the

each

from

The

case.

plug

connections

are

self-interlocking

and

can

only

be

separated

by

drawing

at

the

socket

-4-

2

The which assemblies not

technical

Therefore, the the there available

By help

The

signal

2.1

For

Electrical

microwave

fulfil

completely

defective

on

the

description

for

the

overall

flows.

Power Relay

decreasing

arranged

ADVANCED

It

delivers

correct

the

After the

(T002;

fuse In

transformer protected

At

on At

dropped

smaller

accurate

the

function

+15-V

switching

fan

motor

3.4

F2

=

dependence

first

K3

the

Relay

the

rest

and,

mains

voltage

software.

and

therapy

sophisticated

special

available

or

economical

the

work

sub-assembly,

sub-assembly

the

same

as

replacement

of

service

view

is

supply

PCB

the

ELECTRONIC

the

required

is

realised

circuits.

V/11.5

1.0

is

at

the

is

condition

Both

on

the

for

cooling

A).

A

arranged

on

the

switched

primary

switching

PCB

the

therefore,

voltage

of

the

functional

unit functions.

measuring

to

the

reasons.

of

the

service

measuring

sub-assembly.

functions

man

to

quickly

given

(A200)

RF

in

(A100),

interference mains

(type

+5-V

by

resistors

mains

the

Fan

and

on

operation

on

side

and

then

inrush

and

when

the

K1

attracts

switching

descriptions

thermatur

For

repairing instruments service

its

replacement

is

to equipment

and

the

man

at

be

sent

possible

and

safely

block

diagram

high-voltage

radiation

input.

and the

voltage

magnetron

heater

the

by

the

by

the

current

the

transformation

A

switching

NA

075

+15-V

resistor

are

accommodated

the

transformer

Relay

conditions,

K2,

PCB.

relay

slow-acting

approximately

of

the

mains

and

increases

point

depends

m250

and

or

which

the

customer

and,

to

the

used

error

eliminate

consists

as well

testing

if

required,

manufacturer

for

the

sources

and

transformer

into

the

power

P403)

voltages. R28

supply

(M001)

is

=

4.7

voltage

and

used

The

are

i.

e.

if

RF-power

mounted

on

fuse

100

high-voltage

voltage

ratio

exceeds

of

the

on

the

of

different

as

exact

devices

cannot

is

production.

any

shows

mains

are

be

operated

mainly

re-adjustment

and,

these

error.

the

electrical

(T001),

network

supply

to

supply

minimum

Q

for

the

+5-V

on

the

Amplifier

the

applies

heater

to

transformer

separately

output

the

Relay

F1

=

3.15

A.

ms

later.

Due

transformer

the

nominal

the

high-voltage

transformation

power

range

electronic

testing

restricted

After

Service

of

all

load

and

necessary

at

after

the

this,

Instructions

rectifier

the

mains

the

electronic

current

resistor

PCB.

the

switching

protected

is

desired,

PCB.

There,

to

this

is

reduced.

voltage

transformer

ratio

by

selected

sub-assemblies

tuning

which

the

to

the

of

parameters.

repair,

the

these

are

customer

localization

it

is

PCB

is

shall

sub-

not

due

Then,

tested

again

be

interconnections

filter

company

(A600)

FARNELL

and

(A200)

sub-assemblies.

required R27

for

the

by

the

it

time

adjusted

about

and

power

is

delay

small.

is

for

=

150

Q

supply,

magnetron

slow-acting

high-voltage

electrically

and

K1

With

10 %.

defined

The

or to

of

a

and

is

the

for

R1

is

a

by

Thus, tion decreased.

For PCB.

The magnetron corresponding

inputs

the

mains

percentage

magnetron

Due

to

high-voltage

current,

of

the

voltage

of

the

operation

the

full-wave

divider

accommodated

measuring

Interface

fluctuations

high

voltage

the

voltage

rectification

(R2

to

signals

PCB.

decreasingly

and,

therefore,

of

the

R3)

and

on

the

for

the

extend

that

high-voltage

voltage

current

computer.

is

measurement

Rectifier

of

transformer

not

smoothed.

PCB,

D13

to

the

are

is

the

high-voltage

working

resistors

used

an

overvoltage

range

is

rectified

(R5

for

the

side.

The

of

the

magnetron

on

the

to

R10)

preparation

preventer

fluctua-

is

Rectifier

for

the

of

the

for

the

2.2

The

D/A messages

The

nels channels

(AD2)

acteristic

the

A

D/A integration converter

D3 D05),

In process impedance

realised

For

program

man

Control

converters

analogous

the

resolution

of

or

CW

impedance

Interface

converter

controls

and

D6

current-divider

accordance

conditions

by

unit

diagnosis

routines

with

respect

computer

PCB

contains

and

peripheral

as

well

as

all

controls.

multiplexer

of

which

them

are

used

(continuous-wave)

of

the

PCB.

is

realised

circuit

are

of

the

(N1A). the

current

used

as

drivers

switch

with

the

mode

(high-voltage,

the

radiator)

micro-controller.

as

well

are

integrated

to

error

(A400)

the

micro-controller

circuits,

and

A/D converter

is

10

bit

for

measuring

mode

radiators

by

By

means

in

(D03,

of

the

control,

as

program

elimination.

(RK2).

the

pulse-length

of

the

magnetron

for

the

D04),

operation,

magnetron

which,

(Cf.

(INTEL

time

and

integrated

in

the

input

the

(AD1),

the

digital

magnetron

regulation

monitoring

in

mains

The

Amplifier

coil

signals

time

current,

case

also

clause

of

87C196),

power

high-voltage

indicators,

in

voltage

frequency

measuring

modulator

PCB

and,

thus,

required

blocking

and

output

mains

and

monitoring

by

means

error,

give

5.

Hints

the

8-K

LEDs

the

micro-controller

range

(S),

between

magnetron

(SYNCH)

voltages

integrated

the

output

the

to

(OFF)].

power

frequency,

of

information

for

required

magnetron

control

selected

of

all

the

"watch-dog"

trouble

EPROM

for

operation

0

current

and

in

the

processor

signal

additional

parameters

current.

the

by

to

the

(A01)

unit

the

shooting).

with

A/D

and

condition

realise 8 chan-

and

+5

V.

Five

in

pulsed

additional

are

provided

[relays

user

characteristic

required

(D1)

user

and

of

the

and

method,

or

char-

D/A

(D01,

the

are

service

on

an

2.3

The and

Magnetron

In

the

netron

generated computer

(AD2)

measuring After

Interface

the

calculation

stand-by

current

in

switching

magnetron

measured

Switching

In

the

smallest

PCB

(R5,

In

the

medium

Rectifier

PCB

current:

is

led

PCB

via

the

pulsed

channels

on

current

and

evaluated

over

power

R6

and

power

are

(A500)

interconnects

of

analogous

mode,

simulated

to

the

IC1

operates

on

the

input

R48,

R6

mode.

prior

to

switching

the

high

voltage

flows

through

by

the

magnetron-current

R7

in

range

to

range

the

of

R10)

VT4

current

the

values

the

Rectifier

of

the

and

TP2

In

service

the

analogous

the

are

included

is

path.

process

are

as

50-mA

analogous

in

the

operations

on

the

constant-current

performed

PCB

multiplexer

CW-mode

the

high

and

constant-current

through

current-divider

inputs

measuring

thermatur

switched

in

m250

the on

by

computer

on

it

is

voltage.

resistors

of

the

ranges:

all

current

the

processor.

signals.

this

PCB.

source.

the

probe

(AD1)

and

used

source

via

of

the

to

on the

processor.

probe

resistors

path.

The

adaptation

In

this

resistances.

the

processor

resistors

check

is

the

switched

Rectifier

arranged

Only

R6

and

of

levels

process a mag-

The

voltage

on

the

R23,

R9

magnetron-current

off.

Then,

PCB

and

on

the

R7

to

R10

drop

Control

and

TP3

the

real

can

Rectifier

of

the

be

In

the

largest

as

probe

This

switching-over

ranges,

approximately

power

resistors

range

(cf.

Table

realises

the

VT5

is

1,

X402/5,

that,

maximum

switched

X403/7).

despite

resolution

on

the

different

by

of

the

processor.

magnetron

the

A/D

Then,

currents

converter

is

always

only

in

R7

to

the

individual

used.

R10

are

used

power

Magnetron

magnetron

With

U2

and

D5.

by

service

overcurrent:

by

a

means

provide Resetting

staff

overcurrents

high-voltage

possible

only

is

S1.

of

mA

900

=

(I

switching-off

switching

by

5

+

signal

%)

and

that

off

and

independent

stored

is

on

in

again

of

the

IC6

mains

computer

flip-flop

voltage

function

indicated

and

or

by

1C3

the

Relay

triggering:

Independent

Control voltage of series

400 bridges Switching

IC4,

the

Determination

Together

the

By connected

selected.

computer

relay

high-voltage

the

resistor

with

ms

series

the

off

and

VT3

high-voltage

with

output

means

voltage

of

can

High-voltage

Through

about

by

voltage

subtracted

R2

333,

applies

in

position

the

of

and

PCB

arranged

(R1

respect

the

K1,

transformer

of

R37

the

be

on

transformer

the

on

to

resistor

high-voltage

provided

additional

the

additional

the

which

of

output

determined.

measurement:

arranged

R4,

to

arrives

the

measurement

at

OP2/2

the

of

computer-port

a

Relay

the

low,

Relay

VT1.

voltage

impedance

amplifier

PCB).

The

the

and

transformer

the

on

case

in

measured

is

the

on

magnetron

PCB

the

IC6

assigned

high-voltage

PCB,

relay

overvoltage

of

characteristic

additional

this

On

Rectifier

converter

point

provide

to

overcurrent

VT1

bit,

thus,

and,

high-voltage

VT2

and

relay

delayed.

not

is

are

impedance

computer

the

by

characteristic

basis

PCB,

OP2/1

(MP6).

6

measurement

a

flip-flop,

triggered

is

high

the

transformer

switched

are

accommodated

K2,

transformer

switching

for

used

undervoltage

or

impedance

of

via

admissible

the

R16,

and

that

so

reference

A

the

IC5

by

voltage.

is

on

directly

is

of

radiator:

the

of

radiator

the

A/D

the

impedance

power

the

TP6

exactly

voltage

Us

watch-dog

switches

and

keep

To

switched

time

a

with

the

on

connected

primary

the

over

mains.

the

forms

converter.

and,

range

voltage

high

thousandth

one

generated

A/D

the

to

output

the

inrush

the

first

at

on

delay

PCB,

relay

the

to

winding

voltage

a

the

thus,

automatically

is

(U,),

of

in

converter

the

on

mains-

current

via

about

of

then

mains.

of

divider

radiator

divided

high

the

1C2

of:

a

is

Mains

On

tapped

urement

freguency

Rectifier

the

at

point

produced

seguence

current

and

2.4

From

amplifier (magnetron consisting

By

of input

the

R7,

the

Amplifier

R10

magnetic

or

analogous

synchronization:

PCB

high-voltage

the

(MP6)

6

and

OP1

by

used

is

well

as

(A300)

output

delivers

of

high-level

signal

a

blocked)

1C1

and

R13,

to

current

input).

U

the

differentiated

is

IC4,

computer

the

control

to

as

the

of

voltage

-15V

to

IC2.

R18,

R17,

independent

result

voltage

high transformer.

and

which

in

corresponds

to

magnetron

the

converter

D/A

across

(maximum

and

T1

magnetron

control

the

T2

of

generated

is

part

A

forms

the

(U

magnetron

magnetic

digital

the

voltage

the

blocking;

full-wave

by pulsating

this

of

basis

the

double

the

to

measurement-value

current.

coil

5

to

0

=

control

current)

input

applying

low-level

of

provided

V)

coil

D02

at

rectification

voltage

DC

sguare-wave

the

mains

the

generation

the

on

the

in

means

by

additionally

analogous

the

enables

the

of

applying

pulse

freguency.

of

Computer

of

between

the

bridge

range

enables

output

control

coil

voltage

the

meas-

at

seguence,

pulse

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high-voltage

the

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V

+15

circuit

blocking

the

by

D02

the

(open

With

low-level

then

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magnetron

R27

and

at

power

the

output

voltage

R28

are

D02

the

amplifier

signal

travel.

used

in

the

pre-loading

control

of

voltage

IC1

operating

of

IC1 so that a bridge

thermatur

resistors

m250

required

-7-

applying

as

summing

is

provided

for

at

A01

amplifier

the

switching

arrives

amplifier.

becomes

with

the

an

power

inverting

As a power

earth-freely

supply.

amplifier

reality.

controllable

OP1

amplifier,

This

enables

and

IC2

a

coil.

2.5

The a

compact

for

For

voltage

rent

The voltage for

A

thermo-switch

lines

therefore,

3

Testing

-

Magnetron

magnetron

sub-assembly

medical

therapeutic

operation

of

3.4 V (11.5

of

approximately

decoupling

for

determining

harmonic

th1

and

protects

Test

devices

Leakage

and

decoupling

(Richardson

for

purposes.

it

requires a high

A)

and

+1.5 A to

unit

contains a filter

the

scattering

(5002)

th2

this

of

the

and

current

the

is

switch

magnetron

unit

measuring

unit

(A003,

Electronics

Company)

generating a microwave

voltage

for

-1.5

additional

energy

screwed

interrupts

instruments:

instrument

of À =

the

power

A.

for

separating

characteristic

suppression.

on

the

from

damage

(up

device

2.6

control

sheet-metal

primary

by

to 4 kV)

A004)

type

YJ

radiation

kV

to

3.1

through

the

high-frequency

impedance

frame

circuit

overheating,

of

1530

(f = 2.45

kV

(i ~ 20

the

of

the

e.

SP

including

GHz)

mA

magnetic

of

the

radiator

the

magnetron.

high-voltage

g.

in

case

decoupling

of

to

800

field

of

energy

as

transformer

of

fan

unit

suitable

power

mA), a heater

the

coil a cur-

from

the

DC

well

as

filters

Through

failure.

the

and,

is

-

Earthing-conductor

-

Line-voltage

-

Digital

-

Two-channel

-

GHz-frequency

-

Load

-

Additional

-

Microwave

-

Load

-

DC

-

Adapter

-

Laboratory

-

Measuring

multimeter

resistor 50

with

40-dB

resistor

voltage

cable

testing

regulator

instrument

oscilloscope

meter

©, 0 to 3 GHz;

attenuating

attenuators

power

source

power

lines

meter

for

continuous

600 V to

50

Q,

supply

and

RG

parts

device

25

A,

260

V

(1

A,

10

A)

250

W; S <

output

(calibrated) 6 dB,

(e.

213/U,

unit

(calibrated)

g.

NRV

operation

3000

V

Lemosa

2 x

30

by

Rhode & Schwarz 50

V,2A

1.15

10

dB

O, 0 to 3 GHz,

connector/N

Comp.)

250 W to

connector

including

500

W, S <

probe

1.5

3.1

Test

of

Remove

voltage

the

transformer.

Separate: X402

(on

X504

(on

X305

(on

Switch

on

the

power

fuse

A400), A500),

A300).

mains

the

supply

(3.15

F1

voltage,

on

A)

the fan

A200

interrupt

or

starts

the

running.

primary

connection

at

the

high-

1/pin 3/pin 4/pin

X503

1/pin 3/pin 4/pin

2/pin 4/pin

3/pin

Test

check

of

off

Voltage

Pin Pin

Plug Voltage

Pin Pin Pin

Voltage Pin Pin

Switch

Disconnect Switch

Measure (positive

5 5 6

on

5 5 6

1 1 1

the

X306.

the

pole

X305

at

V

+5

V

+15

V

-15

A300.

X504

at

+5

+15

V

-15 X403:

at

+5

+15

V

-15

mains

18

voltage,

magnetron

mains

at

Vd.c.

red

the

voltage.

(nominal

the

in

V V

coil

21

to

marking).

voltage):

+0.25V

V/-1.5

+2

V/-2

+1.5

range

+0.25V

V/-1.5

+2

+1.5

+0.25V

V/-1.5V

+2 +1.5

plug

control

Vd.c.

of

V/-2

the

on

the

at

V

V.

10

+

Uy

V V.

V.

connector.

magnetron

%:

coil

Connect

Measure

Connect

Measure Measure

Switch

Re-connect

Switch

Check

X306/3

off

on

at

(positive

Check

the

MP2

at

X307/4:

at

X306/4

at

MP2

at

X307/4:

the

X306.

the

magnetron

the

at

pole

mains

earth

to

on

+5

to

on

mains

the

current:

(MP1

about

V

about

+9

via

about

-8

A300:

voltage.

coil:

marking).

red

IN < 0.9

V.

an

V.

18

A500).

on

V.

-9

8.2-kQ

+8

Vd.c.

Αρης.

resistor

V.

21

to

(MP2

Vd.c.

on

A500).