Valleylab Force 4 User manual

FORCE

4

SERVICE

MANUAL

110V

VALLEYLAB,

INC.

VALLEYLAB

5920

LONGBOW

303

EFFECTIVITY DATE: May

PART

530-2300

NUMBER

PRINTED

DRIVE,

P.O.

IN

A

USA

BOX

TWX

1,

1985

945

100

9015,

910-940-2514

054

A

BOULDER,

COLORADO

80301

TABLE

OF

CONTENTS

SECTION

1.

INTRODUCTION

2.

INSTALLATION

3.

DESCRIPTION

4.

MONOPOLAR

CONFIGURATIONS

5.

TECHNICAL

6.

CIRCUIT

7.

TESTING

8.

TROUBLESHOOTING

9.

ASSEMBLIES

10.

PARTS

11.

WARRANTY

OF

AND

SPECIFICATIONS

DESCRIPTION

PROCEDURE

AND

LIST

CONTROLS

BIPOLAR

AND

ACCESSORIES

SCHEMATICS

&

INDICATORS

ELECTRO

SURGICAL

PAGE

1

2

4

13

15

21

43

50

76

116

135

LIST

OF

ILLUSTRATIONS

FIGURE

1 FORCE 4

INDICATORS

AND OUTPUTS ON FRONT PANEL

2 FORCE 4 CONTROL KEYBOARD ON FRONT PANEL

3 FORCE 4 REAR PANEL CONTROLS AND CONNECTORS

4

5

6

7

8
9

10
11

12

13
14

15
16

17

18

19/20

21/22

23/24

25/26
27/28

29/30

31/32

33/34

35/36

37/38

39/40

41/42

43/44

45/46

47/48

49/50

51/52

OUTPUT

OUTPUT

OUTPUT

BLOCK

TIMING
BLOCK

OUTPUT

FORCE4BLOCK

MONOPOLAR

BIPOLAR

TROUBLESHOOTING

FORCE4COMPONENT/CONNECTOR
FORCE4COMPONENT/CONNECTOR

SYSTEM

PCB

CPU

OUTPUT

INTERFACE

BIPOLAR
BIPOLAR

CLOCK/CONTROL
SENSE

DRIVER

STRIPLINE

MONOPOLAR

BIPOLAR

POWER

POWER

VOLTAGE

DIAGRAM

VS

VS

-

LOAD

LOAD -

VS

BIPOLAR

WAVEFORMS -

DIAGRAM-CONTROL

POWER

SUPPLY

SCHEMATIC

OUTPUT

OUTPUT

INTERCONNECT

INTERCONNECT

BOARD

ASSEMBLY/SCHEMATIC

BOARD

BOARD

OUTPUT

WAVEFORMS

WAVEFORMS

WAVEFORMS

LIST

ASSEEMBLY/SCHEMATIC

ASSEMBLY/SCHEMATIC

BOARD

CONTROLLER

BOARD

BOARD

BOARD

ASSEMBLY/SCHEMATIC

ASSEMBLY/SCHEMATIC

BOARD

ASSEMBLY/SCHEMATIC

DISPLAY

DISPLAY

BOARD

- MONOPOLAR

BIPOLAR

CONTROL

SETTING

STAGE

CLOCK/CONTROL

MODULE

TIMING

DIAGRAM

LOCATIONS-TOP
LOCATIONS-SIDE

SCHEMATIC

ASSEMBLY/SCHEMATIC

BOARD

ASSEMBLY/SCHEMATIC

ASSEMBLY/SCHEMATIC

BOARD

ASSEMBLY/SCHEMATIC

ASSEMBLY/SCHEMATIC

SPEAKER BOARD ASSEMBLY/SCHEMATIC

POWER

POWER

MONOPOLAR

BIPOLAR

POWER

SUPPLY

SUPPLY

OUTPUT

BOARD

CONTROLLER BOARD ASSEMBLY/SCHEMATIC

KEYBOARD/SCHEMATIC

KEYBOARD/SCHEMATIC

SUPPLY

MODULE/SCHEMATIC

ASSEMBLY/SCHEMATIC

BOARD

VIEW

VIEW

PAGE

4
8

11

18
19
20

27

35

36

41

42

68

70
72

77

78

98

80

81
84

86

88
90

92

94

96

98

100

102

104

106

108

110

112

114

LIST

TABLE

OF

TABLES

INPUT

SIGNALS

&

OUTPUT

ON

CPU

LINES

BOARD

-

BIPOLAR

PAGE

CONTROL

11

29

32

SECTION

INTRODUCTION

This

Service

the

Valleylab

sections

Testing

use

of

and

elect

directed

1

Manual

Model

covering

Troubleshooting

rosurgery

to

the

Operator's

covers

the

FORCE

Technical

is

beyond

Instruction

the

installation

4

Electrosurgical

Specifications,

of

the

Generator.

the

scope

Manual

and

basic

Generator.

of

this

provided

service

Circuit

Detailed

manual

by

instructions

Also

included

Descriptions

instructions

and

the

Valleylab.

and

in

reader

for

are
the

the

is

Valleylab,

in

equipment

obligation

and/or

sold

its

to

by

dealers

built

make

them.

and/or

the

and

representatives

sold

same

or

by

similar

them

reserve

at

changes

any

the

time

on

equipment

right

without

to

make

incurring

previously

changes

any

built

SECTION

INSTALLATION

2

INSTALLING

The

compact

unit

convenient

At

is

may

high

important that the vents on the rear

proper

closely

air.

top

and

POWER FOR THE

90-140

The

FORCE4is

voltages

of

brownouts

constant.

(nominal).

PROPER

THE FORCE 4

size

of

the

FORCE

4 system allows a variety

be placed on the mounting cart

and

power

cooling.

fitting

Under

rear

VAC,

with

The

GROUNDING

sturdy

settings

cabinet or

continuous

panel

FORCE

50

essentially

or

FORCE4is

table

For

this

to

feel

4

-

60

Hz

designed

power

or

cart.

considerable

reason

cart

use

for

extended

warm

perfect

surges

to

operate

the output

normally

to

power

the

which

the

output

available

is

and

FORCE

might

periods

touch.

over

regulation.

of

supplied

of

installations.

from

Valleylab, or on any

dissipated within the unit

sides

4 should not be

restrict

of

an

unusually

the

for

remain

the

free

time,

FORCE4will

operation

it

is

wide

This means

unobstructed for

installed

circulation

normal

range

that

always remain

on

120

and

for

of

in

volts

The

it

in a

of

the

input

case

AC

An

important

equipment

connected

flow

failure.

Undesirable

the

assure

the

POWER

Unless

equipped

meets

by
be

from

input

proper

FORCE

PLUGS

an

all

using

periodically

consideration

is

proper

to

the

generator

the

cabinet

60

Hz

60 Hz

4.

FOR

explosion-proof

with

requirements

extension

power

grounding

THE

an

approved

disassembled

grounding.

leakage

to

FORCE

for

cords

chassis

of

the

and

4

hospital

safe

or

in

assuring

the

unit

currents

unit.

polarity

connector

grounding.

3-prong

and

inspected

The

and

are

duty

to

patient

ground wire

insures

in

the

also

It

is

the

in

the

power

is

specified,

three-prong

Its

2-prong

by

safety

that

no

event

affected

qualified

of

responsibility

outlets

connector.

purpose

adapters.

while

in

the

dangerous

an

internal

by

the

the

110

should

The

maintenance

using

power

currents

polarization

of

furnishing

volt

This

not

connector

electrical

cable

electrical

the

user

power

FORCE

connector

be

defeated

should

personnel.

will

4

is

of

to

to

is

220

volt

volt

tandem

Hospital

volt

connectors

country

room.

connectors

AC

Grade

will

versions
blade

110

and

used

in

equip your

of

the

FORCE4are

connector

volt

connector. At present there are no Hospital

we do

other

FORCE

of

equivalent

not

countries.

4 with

have

access

The

the

shipped

quality

Valleylab

proper

with

and

to

all

connector

a

the

representative

standard

construction

various

for

your

U.S.A.

to

Grade

220

in

operating

220
the

220

volt
your

ROUTINE

The

Maintenance
repairing

the

replacement

PULL

We

year.

MAINTENANCE

solid-state

cords

cord

ON

recommend

it

THE

This

design

is

limited

and

should

problems.

CORD

ITSELF.

that

Service

AND

replacing

the

Manual

procedures. For major

your

Valleylab

information

representative.

needed

to

INSPECTIONS

of

the

to

periodic

be

replaced.

Cords should

FORCE4be

describes

repairs

repair

the

FORCE4assures

inspections.

accessories.

Proper

handling

always

inspected

the

recommended

the

If

desired,

FORCE

FORCE

4 can be returned

4.

virtually

Repair

Should

be

grasped

by

the

Valleylab

maintenance-free

should

breakage

will

hospital

minimize

by

the

inspection

will

supply

be

limited

or

wear

repair

plugs.

engineer

and check-out

to

Valleylab or

any

occur

DO

twice

parts

use.

to
to

and

NOT

a

or

SECTION

3

DESCRIPTION

OF CONTROLS AND

MICR08IPOU

R

INDICATORS

• • •

ACCCSSORT

iTVW

6)(16H9Y8)(7b)

mrumi

MONOPOLAR

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ITCH

(11)

wtts

(10

1

^!

com

rawcii

s2

2

1,2

4,5

6-9

10,11

12

13,14

3

15

16

Microbipolar

Monopolar

Alarm

and

Monopolar

REM

connector

Monopolar

Bipolar

Audio

Remote

THE

Output

Volume

Power

FORCE4INDICATORS

Power

Power-Cut

Mode

Power

Output

Indicators

-

Coag

Jacks

Jacks

Change

Indicator

FIGURE

AND

1

OUTPUTS

ON THE

FRONT

PANEL

A.

FRONT PANEL

1.

BIPOLAR

The

at

generator

2.

BIPOLAR

OUTPUT

word

the

Microbipolar

POWER

INDICATORS

ACTIVE

'WATTS'

is

keyed

READOUT

AND OUTPUTS

INDICATOR

will

be

Output Jack

in

the

illuminated

bipolar

(SEE

(3).

mode

when

may

FIG.

useful

Absence

indicate

1)

output

of

illumination

generator

power

is

available

when

the

malfunction.

This

mode

power,

generator

3.

BIPOLAR

This

will

accessories

when

4.

MONOPOLAR

The

the

monopolar

generator

5.

MONOPOLAR

This

mode

cut

generator

digital

(2,

Fig.

in

watts,

is

ACTIVE

receptacle

be

keyed

the

bipolar

CUT

backlit

cut

mode

output

is

CUT

digital

(2,

Fig.

power,

is

LED

2).

keyed

RECEPTACLE

will

by

and

OUTPUT

word

and

keyed

POWER

LED

2).

in

watts,

keyed

display

The number

which

in

the

accept

the

the

bipolar

foot

switch

ACTIVE

'WATTS'

useful

jacks

indicates

READOUT

display

The number

in

is

visible

will

bipolar

the

handswitch.

generator

button,

INDICATOR

will

output

(13) and

a

is

which

the

will

monopolar

when

displayed

be

delivered

mode.

three

prong

It

(18,

be

visible

power

(14).

malfunction.

visible

displayed

be

delivered

cut

will

is

Absence

when

mode.

the

predicts

to a 100

active

also

then

Fig.

when

is

available

the

predicts

generator

bipolar

accept

keyed

2),

is

the

generator

of

illumination

generator

the

to

a 300

the

level

ohm

two

by

pressed.

at

level

ohm

is

in

the

of

load

when

accessories

prong

the

foot

is

either

is

in

the

of

monopolar

load

ready

bipolar

active

switch

keyed

of

when

ready

when

the

and

in

the

the

the

6.

7.

ALERT

This

condition.

MODE

A.

INDICATOR

One

waveform.

selector

INDICATOR

LED

lamp

of

four

is

on

The

audio

LAMPS

CUT

mode

The mode may

push

buttons

whenever

alarm

indicators

(9,10,11,12;

will

be

the

sound

is

changed

generator

twice

illuminated

by

pressing

Fig.

2)

when

is

this

disabled

lamp

to

show

one

of

goes

the

the

by

on.

CUT

four

an

alarm

power

mode

Pure: 750 kHz

Blend

Blend

Blend

1:

2:

3:

50%

duty cycle,

25%

duty

25%

duty

pulses.

sinusoid

cycle,

cycle,

750

kHz

750

kHz

750 kHz

sinusoid j

sinusoid

sinusoid

plus

inductive

discharge

B. One

C. One

8.

RETURN

This

electrode

of

patient

is

The

rekeying

of

two

waveform.

(15,16;

SPRAY COAG:

SOFT

bipolar

is

STANDARD:

COAG:

of

by the

Fig.

two

output

PRECISE:

FAULT

LED

illuminates

connection, producing a

the

RF

current

connector ( 12

on.

alarm

The

can

the

COAG

Select

mode

by

indicators

pushing

is

one

3)

31

kHz

inductive

22

kHz

inductive

bipolar

power

push

buttons (5,6;

Output

100

ohm

Output power

power.

INDICATOR

audio

alarm

power

versus

power

at

50 and 200

load. j

at

if

the

returns

).

to

The

will

be cleared by releasing the

unit.

discharge

discharge j

mode

a 200

indicators

load

Fig.

2). j

ohm

FORCE4is

situation

the

generator

FORCE4is

sound

twice

illuminated

of

the

impedance

ohm

loads

load

keyed without a proper patient ^

where

disabled

when

to

show

mode

is

selector

illuminated

characteristics.

is

1/2

is

1/4

of

a

significant

by

some

path

so long

the

alert is first

hand

•

or footswitch

of

the

the

the

100

other

as

COAG

push

to

buttons

show

power

the

Selection

power

ohm

at

output

a

proportion j

the

than

indicator

the

detected.

and

then J

9.

REM

FAULT

This

alarm

condition

patient

the

alarm

30%

increase in resistance.

alarm
lowered

10.

MONOPOLAR

The

the

coagulation

monopolar

generator

INDICATOR

LED

illuminates

condition.

is

electrode

condition

is

first

and

COAG

backlit

output

is

is

a

within

word

keyed

(Return

when

For

a single-section patient electrode the

resistance

connector ( 12

is

a

resistance

detected.

the

acceptance

OUTPUT

mode and

ACTIVE

'WATTS"

jacks

may

useful

(13) and

indicate

Electrode

the

patient

greater

).

The

The

alarm

INDICATOR

will

be

output

a

Monitor)

electrode

than 16

For a

outside

audio

range.

visible

(14).

malfunction.

alarm

is

power

Absence

cleared

when

contact

ohms

between the

dual-section

the

range

will

the

is

available

of

sound

when

generator

of

illumination

monitor

patient

5 -

135

twice

the

resistance

at

senses

pins

ohms

is

either

an

alarm

of

the J

electrode

or

when

keyed

when

the j

is

of

the
the

a ^

in

12.

MONOPOLAR

COAGULATION

POWER READOUT

This

coagulation

when

PATIENT

This

monopolar

actuates

section

13.

MONOPOLAR

This

(Valleylab

output

button

14.

MONOPOLAR

accessories.

have

mode

digital

(2,

Fig.

the

generator

RETURN

2

pin

a

patient

ACTIVE

receptacle

can

(17,

or

coagulation

ACTIVE

receptacle

no

power

or

coagulation

LED

display

2).

power,

is

The

in

keyed

ELECTRODE

receptacle

procedures.

switch

electrode

accepts

within

RECEPTACLE-HAND

will

LectroSwitch)

be

activated

Fig.

This

available

accept

2)

is

mode power may be

RECEPTACLE - HANDSWITCH

will

output

mode

is

visible

number

watts,

in

displayed

which

the

RECEPTACLE

the

A

pin

the

receptacle

used

or

by

pressed

accept

if

power

for

three-prong

standard

the

is

activated

the

generator

may

when

will

monopolar

patient

on

contact

OR

FOOTSWITCH

one-prong

footswitch

or

by

keyed

the

be

keyed

three-prong

the

generator

predicts

be

delivered

coagulation

return

the

patient

to

indicate

area

(REM)

handswitching

active

when

the

handswitching

at

this

only

is

by

keyed

at

this

the

level

electrode

electrode

the

monitoring.

active

accessories.

the

monopolar

receptacle.

handswitching

the

handswitch

by

the

receptacle.

is

to

a

mode.

connector

use

accessory.

footswitch.

in

the

of

monopolar

300

ohm

connector

of

the

accessories

footswitch

and

ready

load

used

dual-

This

Cut

active

will

Cut

15.

16.

AUDIO

The

keyed

forward

volume

REMOTE

This

remote

When

off

VOLUME

volume

may

of

INDICATOR

lamp

power

the

by

switching

to

lamp

CONTROL

of

be

adjusted

increase

the

will

change

the

'bong'

be

is

to

cut

and

with

the

produced

illuminated

feature

on,

remote

standby

coag

this

volume,

(1,

audio

by

is

power

Fig.

tones

4-position

push

and

activated

it

alarm

the

changes

3).

produced

slide

back

conditions

audio

at

can

switch.

to

decrease

is

will

the

handswitching

occur.

when

not

'bong'

The

the

generator

Pull

the

volume.

adjustable.

once

lamp

the

switch

when

accessory.

is

turned

is

The

the

3-6

7-12
1,2

17,18

13,16

Bipolar

Monopolar
Standby,

Footswitch

Monopolar

Controls

CUT

Ready

Keying

COAG

controls

Mode

Selectors

controls

Selectors

THE

SSE4

CONTROL

FIGURE

KEYBOARD

8

2

ON

THE

FRONT

PANEL

B.

FRONT PANEL KEYBOARD CONTROLS

1.

STANDBY

In

suppressed.

be

2.

READY

this

blank.

MODE

MODE

mode

SELECTOR

the

Prior

The

generator

SELECTOR

generator

power

level

is

(SEE

cannot

in

FIGURE

settings

standby

be

when

2)

keyed

are

and

retained

power

is

the

but

first

audio

the

displays

applied.

alerts

are

will

3.

4.

5.

6.

7.

Pressing

alarms

BIPOLAR

push,

fully

This

button

the

power by one

the

display

BIPOLAR

Pressing

or

STANDARD

Pressing

PRECISE

Pressing

MONOPOLAR

This

button

increase

the

display

this

POWER

button

active.

INCREASE

increases

to

increase

POWER

this

DECREASE

button

continuously

MODE

MODE

this

this

CUT

SELECTOR

button

SELECTOR

button

POWER

increases

the

power

to

the

the

watt.

decreases

if

will

will

INCREASE

by

mode

places

BUTTON

bipolar

Holding

continuously

BUTTON

the

button

select

select

BUTTON

the

monopolar

one

watt,

maximum.

the

the

generator

power

the

to

bipolar

is

the

Standard

the

Precise

cut

and

holding

readout.

button

70

watts

held

power

in

down

power

down.

Bipolar

Bipolar

readout.

the

service

A

single

continuously

maximum.

display

mode.

mode.

button

with

by

A

single

down

push

will

outputs

will

will

one

watt

push

and

raise

cause

per

will

increase

8.

MONOPOLAR

Pressing
watt

9.

CUT

Pressing

per

MODE

CUT

POWER

this

button

push,

SELECTOR

this

button

DECREASE

or

continuously

-

PURE

will

decreases

CUT

select

BUTTON

the

if

a

monopolar

the

button

continuous

cut

mode

is

held

sinewave

power

down.

cut

display

waveform

by

one

output.

10.

CUT

MODE

SELECTOR

- BLEND 1

11.

12.

Pressing

output.

CUT

MODE

Pressing

sinewave

CUT

MODE

this

SELECTOR-BLEND

for

SELECTOR - BLEND 3

button

this

moderate

button

will

2 j

selects

hemostasis.

select

a

Pressing this button selects a cut

plus

hemostasis.

13.

MONOPOLAR

This

push

cause

14.

MONOPOLAR COAGULATION POWER DECREASE BUTTON

This

or

inductive

COAGULATION

button

will raise

a

continuous

button

continuously

discharge.

increases

the

increase.

decreases

when

POWER

the

power

the

it

is

This

INCREASE BUTTON

monopolar

by

one

coagulation

held

down.

a

50%

duty

cut

mode waveform

mode

is

the

coagulation

watt,

and

power

cycle

output

cut

waveform producing

sinewave

waveform

power

holding

display

the

by

cut

waveform

of

25%

of

duty

25%

cycle

sinewave

maximum

display. A single ^

button

one

watt

down

per

will j

push,

15.

COAG MODE

Pressing

repetition

16.

COAG MODE

Pressing

discharge

17.

FOOTSWITCH

Pressing

control.

18.

FOOTSWITCH

Pressing

SELECTOR-SPRAY

this

SELECTOR

this

this

this

button

rate

coagulation

button

at a lower

SELECTOR

button

SELECTOR-BIPOLAR

button

will

-

SOFT

will

repetition

- MONOPOLAR

places

places

COAG

select

waveform.

COAG

select

the

the

an

a

rate

(22

monopolar

bipolar

inductive

coagulation

KHz).

output

output

under

discharge

waveform

under

footswitch

with

with

footswitch

control.

a 31

KHz

inductive

keying

10

0

©

MONOPOLAR

FOOTSWITCH

21 21 A

BIPOLAR

FOOTSWITCH

Wiring

A

D

C

B

ACTIVE

COAG

footswitch

Ao

\o

Monopolar

cut

Diagrams

OU

OJ B

=*<>

=t^7

C Bipolar

ACTIVE

( °

A

D

C

B

Handswitch

^ r

i ;

JJandswitch

o

ASWITCH

O

° J

CUT

^7

;REMOTE

I

PUR

CHNG

L&C.CE5S.0B.Y

jACTIVE

SWITCH

/

f f

CASE

1

COAG/

O-i

O-l.m

UP.ACT1VATE

/^"CT*\

AfOOV

W

DOWN

i

COAG

!

in

B

CUT

SWITCH

B"

Th

ACTIVE

ACTIVE

1

CASE

ACTIVE

THE

FORCE4REAR

FIGURE

PANEL

3

CONTROLS

11

AND

CONNECTORS

REAR

1.

FOOTSWITCH

PANEL

CONTROLS

AND CONNECTORS

RECEPTACLE-MONOPOLAR/BIPOLAR

(SEE

FIG.

3)

This

connector.

2.

POWER

This

apply

3.

POWER

The

connected

4.

FOOTSWITCH

This

connector.

4-pin

SWITCH

power

power

CORD

line

toaproperly

three-pin

The

switch

and

cord

MS-type

wiring

includes

down

is

receptacle

diagram

to

shut

terminated

phased,

RECEPTACLE-BIPOLAR

MS-type

receptacle

a

circuit

power

accepts

is

shown

off.

in

a

grounded

accepts

in

Fig.

breaker.

grounded

receptacle.

the

3.A.

Press

3-pin

the

single-treadle

two-treadle

the

toggle

plug

and

footswitch

upward

should

footswitch

to

be

12

SECTION

4

MONOPOLAR

ELBCTROSURGICAL

&

ACCESSORIES

The

FORCE4features

these

HANDSWITCH

switching

switching
output

AND

outputs

pencil.

accessories

is

a

output

nonswitching

accessory

MONOPOLAR

Monopolar

The

or

CONFIGURATION

Accessories

FORCE

operation,

through

contacts

The

on

"active"

Models

the

the

Valleylab

either

E4001

the

since

receptacle.

most

footswitch

E6008

connected

back

generator

Bipolar

activated

4

switching

mixture

spark

standard

panel

has

and

to

in

only.

in

an

currents

of

energy

then

E6009

millijoule.

1/5000
operation.

of

the

BIPOLAR

CONFIGURATIONS

are

used

is

The

reduced

bipolar

by

4

has

the

the

radio

power

accessories

footswitch.

a

patient,

patient's

hand-switching

"Handswitch"

there

and

E4002

The

standard

accessories

controls

footswitches

the

FORCE4by

of

the

CUT/BLEND

The

FORCE4has

the

event

"intrinsically

are

flammable

which

The

energy

amount

three

separate

primarily

designed

MONOPOLAR

or

it

BIPOLAR

radio

frequency

frequency

and

returns

skin.

accessories

or

are

only

coagulation

active

directly

the

means

generator.

or

COAGasneeded.

that

gas

too

both

safe"

low

and

occurs

present

considered

in

for

ACCESSORY

can

be

output

and may he

current

to

"Accessory"

low,

"accessory"

current

are

The E6008

an

override

pedals

footswitch

to

oxygen.

at

the

in

a

outputs

monopolar

use

with

activated

which

(RF)

passes

the

generator

plug

switching

forceps

or

through

flow

designed

of

a

four-pin

circuit

are

cause

a

To

switch

the

FORCE4switching

conservative

which

configurations.

either

output

by

may

activated

grounded

from

into

receptacles.

voltages

also

jack

an

to

the

for

operating

footswitch

footswitch

The E6009

pushed

circuit.

spark

qualify

contacts

limit

may

be

activated.

switching

is

designed

the

footswitch.

be

used

by

either

output.

the

via

a

patient

the

three

All

between

plug

accessory.

into

will

appropriate

accept

pedals

activates

to

insure

simultaneously.

This

even

in

as

intrinsically

the

must be

for

safe,

The

forceps

for

with

switching

the

In

active

plate

banana

three

either

the

adapter.

Both

room

receptacle

use

activate

the

that

only

means

most

less

circuits

open-

Two

of

MONOPOLAR

or

a

use

with

The

third

or

switching

monopolar

accessory,

which

pin

jacks

pins

the

monopolar

plugs

the

and

on

are

pins.

of

The

Model

are

the

the

Force4in

COAG

is

The

FORCE

that

the

dangerous

safe,

the

than 1

is

about

contact

The

In

a

densities

Patient

monopolar

to

Return

configuration,

a

safe

Electrode

level.

a

return

electrode

13

is

used

to

limit

the

current

An

accepted

square

per

A

delicate

inches.

as

adherance

method

system

centimeter

hundred

Gelled

Valleylab

of

with

procedure

to

providing

electrosurgical

ground. The

returning

safety

through

from

standard

watts

foam

of

return

of

generator

which

pad

for

gelled

electrode

output.

uses

electrodes,

low

plate

area

(NFPA

power

and

Model E7503, 5, 6, 7 have come

manufacturer's

a

return

current

circuit

ground

patient

burns

the

fault

prevents

instructions,

return

circuit

in

the

is

under

connection.

which

patient

FORCE4operation

excessive

common

fault

or

foil

or

Bulletin

settings

conductive

into

they

The

continuously

circuit

and

thus

conditions.

electrodes

roughly 9

No.

requires

adhesive

common

can

be

FORCE4is

and

the

if

the

provides

is

or

10 square

76CM,

only

electrodes

usage and

an

effective

monitors

power

proportion

a

high

1.5

watts

Part

a

few

with

an

RF

the

distribution

of

degree

inches

II.)

square

such

proper

and

safe

grounded

flow

current

per

of

of

BIPOLAR

Bipolar

The

connected

is

output

CONFIGURATION

Accessories

most

limited

operates

impedance
coagulation

power

when

common

to

to

the

the

bipolar

BIPOLAR

tissue

at

characteristics

at

a

given

the

coagulation

lower

instruments

output

which

power

optimized

power

is

complete.

jacks.

is

grasped

levels

setting

are

In

than

for

and an

forceps,

bipolar

by

the

the

operation

jaws.

MONOPOLAR

desiccation.

automatic

the

jaws

The

of

the

FORCE

output

This

means

reduction

which

current

4 BIPOLAR

and has

of

are

flow

faster

output

14

SECTION

5

FORCE4TECHNICAL

OUTPUT

CUT

BLEND

BLEND

BLEND

WAVEFORM

750

1

2

750

750

3

750

discharge
kHz. Power

of

the

account

SPRAY

SOFT

MICROBIPOLAR

COAG

COAG

750 kHz damped

31

750 kHz damped

22

750

SPECIFICATIONS

kHz

sinusoid

kHz

bursts

kHz

bursts

kHz

bursts

damped

power

for

kHz.

KHz.

kHz

sinusoid,

is

into

the

of

sinusoid

of

sinusoid

of

sinusoidal

adjusted

a 300

remainder.

sinusoidal

sinusoidal

unmodulated

sinusoid

so

ohm

at

at

that

hursts

bursts

50%

duty

25%

duty

at

bursts,

the

load

cycle

cycle

25%

all

sinusoid

and

with a

with

duty

the

a

recurring

recurring

cycle

bursts

bursts

damped

repetition

repetition

at

31

at

31

plus

recurring

account

sinusoid

frequency

frequency

kHz.

kHz.

inductive

at

for

bursts

31

75%

of

of

OUTPUT

Mode

CUT

BLEND

BLEND
BLEND

SPRAY

SOFT
MICROBIPOLAR

Microbipolar

CHARACTERISTICS

(open

P-P

1

2

3

COAG

COAG

has

Maximum

circuit)

Voltage

2500

2800
3000

3400

9000

9000

400

selectable

Rated

Load

(Ohms)

300
300

300

300

300

300

100

output

proportional to I/R or I/R2 (Standard or

POWER

Three

Power

watts,

READOUTS

L.E.D.

readouts

whichever

displays

agree

is

(for

with

greater.

coag,

actual

cut

power

and

Maximum

Rated

(at

(Watts)

300

+

250

+

200

+

200

+

120

+

60+5
70

+ 8

characteristics:

Precise).

microbipolar)

into

rated

Power

Load)

20
20

20

20

10

load

power

indicate

to

within

Crest

At

Rated

+10%

1.9

2.6

3.7

4.4

9.0

13.0

1.6

approximately

output

+_

Factor

Load

§

100W

6

100W

6

100W

6

100W

§

50W

<?

30W

§

40W

10%

power.

or

5

15

LOW

FREQUENCY

LEAKAGE

(50/60

Hertz)

Source

Normal

Normal

Reverse

Sink

HIGH

Bipolar

Trip

Normal

A

conditions,

Patient

rms.

Return

current,

polarity,

polarity,

polarity,

current,

FREQUENCY

RF

capacitance

sensitivity:

trip

defeats output for a period

to

Electrode

Measurement

Measurement

Acceptable

Effective

Dual

area

Single

Mode

range

increases

selected

generator

140

RISK

leakage

a

trip

chassis

Frequency

Current

resistance

RF

mode

area

automatically

by

more

patient

intact

ground

ground

volts

PARAMETERS

current,

(mid

power

130+_15

occurs

voltage,

Monitor

140

1.5

ranges:

pad

resistance

5-135

mode

less

will

than

leads,

chassis

open,

open,

applied,

in

(REM)

kHz+_5

mA+_0.5

ohms

than 20

be

shut

30%

the

all

ground,

less

less

40

pf

setting)

pf

0.15

after

6-30

by

return

down

generator

outputs

than

than

all

output

seconds.

40

ohms

less

30uA

inputs,

of

pf

ohms.

electrode

and

tied

than

30uA

less

to

ground:

one

accessory

fault

will

be

together.

2.0uA

than

150

second

capacitance,

connector.

warning

shut

150uA

+_

down

mA

10%.

given.

and

rms.

Outside

an

Under

less

If

alarm

typical j

than

acceptance

resistance

given.

60

V i

COOLING

Natural

CONTROL

The

control

fluids

INDICATORS

The

RF

power

L.E.D.s,

or

fulgurate

Pure

are

Monopolar

Cut

used

tics.

tone

convection

PANEL

from

entering

indicators

is

available

two

or

with

REM

has

for

fault

and

panel

indicator

modes.

three

MBP

a

warning.

bipolar

cooled.

is

a

the

for

at

lamps

Four

available

to

indicate

"fault"

lamps

No

fan. }

flat

system.

COAG, CUT,

unit

indicator

sealed

output

are

Blend

either

indicator

There

indicate

unit

and

connections.

used

with

lamps

modes,

light

is

also

footswitch

16

with

MBP

will

COAG

are

Bl,

Standard

that

a

no

be

to

used

B2,

or

gives

return

function.

openings

illuminated

In

addition

indicate

with

or

B3.

Precise

CUT

an

fault

thus

only

to

either

to

indicate

Two

indicator

power

intermittant

indicator

preventing

when

the

digital

the

normal

either

characteris

800

light.

RF

lamps

Hz

AUDIO

VOLUME

Mode

Adjustable

REM

indicator

fault

FOOTSWITCH

Front

panel

Footswitch

footswitch

OUTPUT

When

power

power

POWER

an

of

of

display

will

range

INPUT

Nominal

Regulation

Operation

Frequency

POWER

tones:

external

tone

is

LOGIC

touch

function

pedals

ADJUSTMENT

"up"

that

button

function

that

for power

from1watt

SOURCE

voltage

range

range

45-64

65

volume

65

dba

buttons

selects

located

function

level

120

volts

95-140

80-140

Hertz

dba

at

starts

is

while

to

volts

volts

at 1

control.

1

meter

select

in

COAG

mode.

on

increased.

is

decreased.

adjusting

a

set

maximum.

rms

rms

rms

meter,

min.

monopolar

the

monopolar

the

instrument

maximum

Not

externally

standard

mode.

control

Whena"down"

The

operator

it

to

the

desired

adjustable.

output

panel

button

can view

or

bipolar

Depression

is

actuated,

is

actuated,

level.

the

Power

output.

of

L.E.D.

levels

both

the

the

CURRENT:

POWER:

LINE

REGULATION

Between

more

than

WEIGHT:

SIZE:

Idle:

Cut:

Coag:

Bipolar

Idle:

Cut:

Coag:

90

2%

38

6 X

and

or

lb,

13

0.4

900

375

140

2

17

X

10

4

3

50

watts.

22

amperes

amperes

amperes

amperes

watts

watts

watts

volts

kg.

inches,

maximum

maximum

maximum

maximum

maximum

maximum

maximum

input,

15

output

X

33X56

power

cm.

into

a

nominal

load

will

vary

no

Specifications

subject

to

change

without

notice.

17

l

CO

c

Ul

300

200

o

a.

100

100

200

500

1000

2000

RESISTANCE/OHMS

FIGURE

4

OUTPUT

POWER

VS

LOAD-MONOPOLAR

18

OUTPUT

CO

1

C

UJ

$

O

Ql

70

56

42

28

a

•

*

PRECISE

MBP

STANDARD

MBP

14

10

20

OUTPUT

50

POWER

100

RESISTANCE/OHMS

FIGURE

VS

LOAD

5

-

BIPOLAR

19

I

150

200

OUTPUT

500

1000

<

UJ

BIPOLAR

400

300

g

O

< .

200

100

0,000

8000

n

MONOPOLAR

10

20

30

CONTROL

40

SETTING

50

60

70

COAG

z°-

UJ

0.

o

6000

4000

2000

BLEND

3

CUT

0

MODE

MAXIMUM

OUTPUT

CONTROL

FIGURE

VOLTAGE

VS

20

SETTING

6

CONTROL

SETTING

SECTION

6

CIRCUIT

POWER

The

DESCRIPTIONS

SUPPLY

FORCE4power

required

across

the

detector

voltage.

all

connected

voltage.

board

has

transistors

use

extreme

Supply

The

-5V

Tl,

and

regulated

+5V

Supply

MODULE

by

the

output

capacitors.

There

The

the

mounted on

caution

supply

rectified

by

Ul.

supply

generator

transformer

are

four

together

large

high

voltage

when

originates

by

module

circuitry.

There

returns:

at

circuit

the

probing

on

CR2. The

primary

are

pins

board

output

large

the

generates

It

and

four

analog,

1-4

of

is

components.

heat

sink

the

board.

Supply

rectified

the

also

R3

supplies:

digital,

the

and

transformer

the

controller

are

Module.

regulated

contains

which

discharges

+5V,

Controller

The

connected

Input

AC

is

two

high

and

output

power

filtered

and

isolated

load

-5V,

voltage

PCB.

T2

directly

resistors;

the

output

+15V

Transformer

and

and

supplies the high

the

small

board

is

and

passed

by

to

the

C2,

DC

power

peak

high

chassis;

circuit

its

four

line;

through

C3

R2,

Tl

and

is

which

L07

constant

current

inductor

kHz.

reference

shuts

oscillator

+15V

This

CR01. The

a

the

pass

output

the

trigger

ripple,

provides

is

controlled

The

down

output

Supply

regulator

zener

reference,

device

exceeds

inductor

and

a switching supply with

the

60

current

increases

at

-0.

5v

of

1.25V

the

to

output

diode

on,

current

with

runs

overvoltage

microhenry

equal

and

7v

and

by

U01

output

to

oscillator

duty

lower

duty

uses

voltage

CR02

voltage

comparator

current

the

reference.

hysteresis.

at

varying

the

which

is

enable

cycle

a

passes

protection

switching

to

the

when Q04

inductor

has

divided

when

is

cycles.

buck

is

divided

inductor

divided

U05

increases

through

This

frequency

15V

load

down

the

pin

50%

turns

At this

regulator

input and

current.

is

off

current

an

internal

by

output

14

and

regulation

down

by

on

in

CR01.

and

by

firing

buck

inductor,

CR03

decreases.

R13,

and

turn

drops

with

R27, R38.

the

by

LI,

time,

pass

R34,

pass

the

Note

controls

duty

5V

output.

SCR01

When

holds

oscillator

R14

and

on

0.33

is

device

R35,

When

device

0.75

the

pass

that

cycles

U2

to

clamp

operating

Q04

is

the

input

The

duty

running

compared

Q04.

volts

accomplished

U05

the

as

and

the

via

mH

device

is

the

A

below

Q01

R37

output

Q02,

inductor,

wired

output

load

is

a comparator

the

at

on,

the

side

cycle

at

to

second

pin

by

and

catch

and

is

Q03.

is

shut

as

voltage

is

output.

a

nearly

inductor

of

of

about

an

internal

comparator

13.

gating

diode

compared

less

With

until

off

a

schmidt

varied.

the

Q04

25

The

the

to

than

the

the

and

and

21

Ancillary

detection

is

the

current

R33.

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integrated

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five

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temperature

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designed

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35

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note

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150

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the

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26

RF

750KHZ

POWER

750KHZ

RF

DC

FORCEPS

2

SENSORS

CURRENT

VOLTAGE.

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EFFICIENCY

GENERATOR
RF

HIGH

GENERATOR

ENABLE

RF

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CURRENT
RF

VOLTAGE
RF

MICROPROCESSOR

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REGULATED

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U301

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The

Control Board performs

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logic.

DS2E):

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microprocessor

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CPU

Board

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to

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70

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and

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output

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ADC

4)

level

watts.

digital

the

The

After

reads

From

delivered

or

down

Figure 4 shows

PRECISE. The

100

ohms,

PRECISE

to

(0 to

reset

KEY(NOT)

output

board

a

will

delay

the

the

power

to

achieve

the

mode

digital

line

line

voltage

be

RF

output

voltage

and

the

two

STANDARD

reduces

conversion

70

watts).

is

10

of

which

enabled.

AFB

volts.

about

ECONisset

holds

is

20

mS

voltage

and

current

the load

the

required

required power vs impedance

modes

the

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mode

output

identical

dropoff proportional to the square

5)

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it

line

then

is

processor

goes

unasserted.

back

checks

to

step

for

DSIE

3. Otherwise,

of

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power supply

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measurements

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power.

at

holds

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control

voltage

ECON

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at 16.4 watts/volt or 4.25

controller

set

so

circuit

current

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adjusts the

impedances

output

as

the

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resistance.

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conditions

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for

voltage

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set

the

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to

microprocessor

feedback

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below

generator

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rises,

zero

100

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the

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is

voltage

stabilize

computes

voltage

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still

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nominal m

volts

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disabled

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the

the

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up

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a

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keyed,

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U305 and

periodically

transistor

the

processor

out

within

and
off

used

the

reset

5

(NOT)

and C307

as

the

volt

the

reset

Q301

fails,

1

second.

low.

discharges.

reference

reference

associated

by the

at

20

MSEC

it

The 555

The

for

intervals,

will

timer

CR301

voltage

the

gates

form a

processor.

stop

ADC.

output

will

is

for

issuing

the

'watchdog'

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keeping

these

is

pulled

reinitialize

a

precision

DAC

and

28

processor

the

voltage

pulses

low,

when

2.5

is

amplified

which

timer

the

volt

pulses

across

and

forces

generator

reference

which

the

by

the base

C309

555

will

key

(NOT)

is

U312

to

must be

of

low.

time

high

turned

which

become

If

is

TABLE 1 INPUT & OUTPUT

ANALOG/

NAME

DIGITAL

LINES

VOLTS

- BIPOLAR

DESCRIPTION

CONTROL

DSE

DSIE

DS2E

ECON

DCSEN

ISEN

VSEN

AFB

KEY

D

D

D

A

A

+12

+12

+12

+5

+5

+5

+5

+5

+5

Master

Desiccate

Desiccate

Note:

Test

Analog Power

Watts

Scaled

Scaled

RMS

Scaled

Volts

Analog

20

Low on

Stage

Desiccate

Mode

Mode

DSE

Routine

DC

Supply

RF

RF Load

RMS VSEN =

Drive

Volts

key

DSIE

Set

Load

to

enables

Enable

1

Enable

2

Enable

Voltage:

Voltage:

Current:

Voltage:

ISEN@100

Switching

RF

-

DS2E

drive

From

Causes

1

1

Volt:

1

Volt

1

ohm

Supply:

to

CPU

Volt

Volt

Board

entry

20

=

Load

the

=

Volts

2.56

=

1

Volt

Output

to

16.4

ma

25.6

=

RESET

FSDS

HSDS

+5

Low

on

Footswitch

Handswitch

29

RESET

holds

Desiccate

Desiccate

the

Power

Enable

Enable

Supply

off.

CENTRAL

The

functions

provide
which

the

purposes

be

treated

The

second

of

the

conditions.

interpreting
analog

when

control

keyed

voltage

audio

tones

produced.

assurance

PROCESSOR

of

the

interface

status

of

discussion,

as

an

function

generator

In

key

and

EREM

(REM

associated

A

"watchdog"

of

proper

UNIT

the

of

extension

of

in

addition

closures,

voltage

generate

output)

program

(CPU)

CPU

through

various

the

the

response

ECON

the

with

BOARD

Board

systems

front

of

the

CPU

to

to

the

(energy

associated

must

keying

timer

operation.

fall

which

panel

CPU

Board

operator

interfacing

CPU

be

sensed

under

into

the

within

keyboard

Board.

is

to

Board
control)

logic

and

program

two

FORCE

the

provide

input

with

must

input

and

various

categories,

4

is

generator

and

control

as

well

displays

calculate

which

to

processed

alert

control

controlled

display

as

scales

other

on

provides

the

first

are

displayed.

assemblies

of

other

various

and

and

the

circuits.

the

conditions

being

and

subsystems

internal

sensing

generate

output

CPU

card

must

continuous

to

through

For

will

and

the

power

Analog

and

be

The

8039

CPU

address/data

bits

line

at

U403
status

K1102,

addressing

of

allowing

the

is

address

positive

a

bidirectional

of

11

strobes

and

asamultiplexed

Keyboard/display

segment

closure

interface

The

configured

every

displays

of

card.

display

as

10.3mS

accordingly.

which

accessing

Front
scan

8279

low,

Logic

lines

is

software

is

panel

lines

are

thus

input

allowing

stored

only

the

switches

are

internally

a

in

control.

addresses

bus

at

the

transition

front

the

data

4

interface

various

consists

an

while

This

updated

display.

common

key

is

read

the

a

and

the

the

instruction

panel

isobloc

transfer

bit

and

eight

switches

8

by

data

are

biased

closure

input

64

bit

4K

lower

negative

of

the

16

bit
lamps,

circuit

is

address/data

U410

status

of

eight

8

matrix.

the

corresponding

is

stored

as

needed,

arranged

to

the

high.

will

similarly,

to

be

sensor

bytes

four

transition

fetched

PSEN(NOT)

I/O

via

and

and

seven

LED

be

with

sensed.

RAM

of

bits

expander

enables

and

the

bus

3

to

LEDs

read

The

in

a

thus

as

elements

array.

The

sensed

which

program

of

from

steering

resets

lower

when

8

line

on

the

handswitch

segment

eight

segment

64

bit

freeing

Return

scan

as

tri-state

Input

port

of

U407

line.

through

4

this

front

displays

display

in

lines

a

logic

data

may

memory

2.

the

ALE

to

the

bits

device

decoder

displays

drive

the

an

lines

buffers

is

be

via

U406

(address

be

transferred

which
and

cut

"watchdog"

of

port

is

U402

panel

related

and

are

RAM

processor

8

by8matrix

RLO

are

sequentially

zero

updated

accessed

latches

the

relays

2

accessed.

drive

assembly,

eight

scanned

lines

internal

through

on

one

enabled

the

CPU

which

logic

from

every

as

latch

are

needed

multiplexed

the

lower

enable)

to

the

controls

K1101

timer.

functions

the

eight

sense

from

mode

sequentially

asserted

to

the

continually

in

which

RL7

of

asserted

return

by

the

10.3mS

8

bus

the

and

U403

7

the

the

lamps

8279

the
the

line.

scan

and

under

30

ECONisproduced by

current

selecting

executingaMOVX

low

address

order

to

FB,

voltage

via

eight

which

address

instruction.

bits

selects

U416,

a

converter.

line

to

address

the

ten

bit

U416

A2 and

Data

is

FA,

BYTE2(N0T)

digital

is

addressed

strobing

transferred

then

writing

input

to

the

mode

analog

as

WR(NOT)

in

the

for

converter

external

two

bytes

high

U416.

memory by

(write)

by

order

and

U415,

line

writing

two

bits

a

chip

by

the

to

Keying

level

ECON

through

input

volts,

keying

U417

EREM

requires

will

executing

Sections

the

generator

for

the

mode

is

calculated

is

the

input

is

every

and

ports

released,

an

1 and 2

presence

and

eight-bit

20

WR(NOT)

640 microseconds.

be

interrupted

a

MOVX

1

and

providesasignal

U421

and

U428. The

multiplied

strobing

address

which

level

V0L1

drives

will

and

through

chime-like

U418 and

every

20

by

the

the

CS(NOT)

F7. U420

the

be

constant

V0L2

the

keyboard

tone

then

mS.

initiates

actuated

and

written

the

mode

of

produce

analog

mS.

2

read

of

to

The

are

via

instruction

U421

a

variable

audio

ratio

line

is

a medium

loudspeaker

when

volume

control

interface

will

diminishing

be

is

of

U414

and function

a

REM

an

alert

to

conversion

enabled

When

the

are

a

level

data

of

power

located

the

created

the

the

following

retrieved

to

U416. Mode

and

buffers

from

enables

fault

digital

INTR(NOT)

two

in

U418

switches

level

or

return

indication.

converter

is

initiated

by

a

MOVX

the

at

address

tone

gain audio

at

PIN 8

write

conversion

line

EF.

oscillator

amplifier

of

U421

(U418) / 255. The

by

executing

OP-AMPina

in

the

generator

U410.

by

first

to

is

in

When

zero

the

writing

program sequence. The power

RAM

and

the

and

U411

cease

fault

instruction

and

bridge

control

keyed,

control

an

alert

in

function

and

condition

which

when

is

conversion

which

comprised

is

the

a

MOVX

panel

and

the

55

successive

required

enables

U413.

and

ECONisset

processes

the

chip

at

complete,

runs

level

audio

write

amplifier

LS1701. The

will

beafunction

panel,

condition

maximum

When

will

continuously

of

at

level

which

audio

value

are

the keying

cancel

analog

select

address

the

processor

data

section

PIN 1

is

instruction

configuration

are

is

present,

steps

for

written

to

zero

the

input

line

EF

and

read

and

3

of

U421

set

audio

of

read

level

occuring

by

of

by

to

a

to

U404

event

or

less

enables.

U405

is

a "watchdog"

of

a CPU

by

the

The

during

the

failure.

CPU,

timer

"Power

timer

will

is

reset

On"

which

It

is

time

by

sequence.

a

out

defeats

oneshot

causing

the

master

all

mode and

timer

output

31

reset

which

PIN 3

generated

function

if

not

to

go

reset

low

by

enables

every

defeating

two

sections

in

500

the

mS

all

of

TABLE

2

SIGNALS

ON

CPU

BOARD

SIGNAL

HS1CT
HS2CT

HS2CG

HS2UP

HSDS

FUNCTION

Program

(Not)
(Not)
(Not)

(Not)

(Not)

Handswitch

voltage

Footswitch
Footswitch

Handswitch

Handswitch

Handswitch

Handswitch

Most

Significant

Least

Return

CoHesive

Desiccate

Desiccate

COAG2Enable

Significant

Fault

vs.

Mode2Enable

Mode1Enable

COAG1Enable

Blend

Blend

Power

Pure

Desiccate

COAG

CUT

3
1

Control

CUT

Enable

Enable

Enable
Enable

Enable

Enable

CUT Lamp

COAG

Desiccate

Cut

Lamp

Relay

(Bipolar)

Enable

Handswitch

Accessory

Signal

Clock

Internal

Remote

Return

REM

Fault

Relay

to

check

Fault

Power

Fault

Lamp

Footswitch

Footswitch

(Not)
(Not)

Audio

Audio

Ready
Standby

Output

Output

for

CUT
COAG
1 CUT

2

Increase

Desiccate

Bit

(Hi

for

Single

(Soft)

(Spray)

Voltage

Relay

Enable

Enable

OPI

Lamp

Change

Lamp

Select

Select

to

Speaker

to

Speaker

REM

Enable

Enable

Enable

2 CUT

2 COAG

Enable

Power

(Bipolar)

of

Bit

of

fault)

Pad

Lamp

101-107

Lamp

Bipolar

Monopolar

Enable

Volume

Volume

Switch

(Precise)

(Standard)

on

Input

Input

Interface

PCB

32

CLOCK/CONTROL

The

Clock/Control

initiate

supply

to

the

signals

or

saturation

The

in

U615,

and

bursts

used

voltage

card

board

is

gated

for

in

and

from

generates

a

the

terminates

signals.

derived

with

and

is

HW

sets

reset,

flip-flop

To

discuss

The

coag

U607/6,

a

In

from

32

used

the

(VR).

reset

control

and

transistor

also

exceeds

At

the

terminates

U605

on

that

the

drive

transformer

pulse

pulse

output

terminated

the

instance,

below

high.

increases

HW

by

width

(CSCG). When

OND

voltage

the

clamp

If

well

going

the

high,

same

BOARD

terminate

are

the

of

dual

by

the

coag

the

the

the

kHz

as

maximum

It

the

by

Q602

on

three

primary.

possible)

via

by

HW

on

if

CSCG

CSCG

amount.

PCB

by

generating

a

750

sense

the

output

six

4

bit

the

cut

blend

modes.

on

drive

cut

hemostasis

repetition

a

flip-flop

occurs

in

circuitry

pulse

sequence

HW

which

and

allows

the

off

C601

inputs

signal

CSCG

U601.

via

U605/6.

C601

above

and

which

doesn't

voltage

occurs

U602's

generates

each

kHz

board;

clock

counter.

clock

outputs.

modes,

rate

on

time

at

width

goes

drive

the

high

HW,

OND

The

primary

or

until

occurs

For

on

soon

the

C602

CGVCM

the

RF

pulse.

Vs,

the

clock

and

CSCT,

transistors.

signals

The

enable

MC

The

gate

at

U601/2

G

is

window

(16

reset

in

the

a 4

kHz

controlling

control

is

initiated

high

current

by

speed

CGVCM,

goes

current

the

U619/4

a maximum

Pulse

is

the

occur

C602

and

after

clamp

signal

on

It

power

mode

CSCG,

by

master

(CCE)

is

not

clock,

independently

derived

(HW).

kHz

in

circuits

coag

and

circuitry,

at

the

source

forcing

comparator

and

high

sense

clears

pulse

width

average

then

the

HW

voltage

(OND)

also

and

controls

supply

enable

S, OS, which

dividing

clock

to

provide

gated

(G),

from

HW

and

in

coag

controlling

modes.

is

mode

the

power

we

by

CL

same

the

initiating

increases
PCB

regulation

C601's

coag

goes

going

Q601

G

width

value

and

time.

high.

flip-flop

generates

the

pulse

high

high,

off

(OFD)

programming

signals

down

signal

in

pure

controls

of

MC.

2).

independent.

In

the

CL

The

supply

will

which

sets
HW

to

charge

When

U602

output

changing

until

flip-flop

CSCG

of

voltage

there

never

is

the

starts

then

and

control

the

high

from

indicate

the

(MC)

25%

and

cut.

the

any

the

clock

is

not

output

last

set

examine

flip-flops

high

capacitor

the

Q

output

HW

the

COAG

and

done

flip-flop

decreases

as

the

will

be

the

OND

voltage

voltage.

the

current

750 kHz

occurs

50%

Neither

off

other

coag

(CL)

mode

clock

VR

point.

COAG

turns

voltage

(CGVCM)

of

goes

current

terminates

occurs

by

changing

soon

voltage

a

delay

will

signals

CPU

CPU

at

duty

drive

on

modes

are

dependent

pulse

is

is

used

in

off

goes

are

the

low

and

output.

until

as

be

power

Input

and

four

limits

clock

750

kHz

cycle

clock

and

drive

G

signals

width.

voltage

as

detail.

U601/4,

clamp

C606;

on

C606

high.

high

and

output

(maximum

sense

the

OND

For

it

HW

goes

on

C601

between

delayed

to

is

is

a

HW

is

is

Two

additional

step

microseconds

until

SS.

the

circuit

saturation

circuits

It

is

after

coag

is

a_

(S)

pulse

one

millisecond

or

oversaturation

are

generated

HW

goes

is

involved

when

low.

over

HW

Its

and

one-shot

(OS)

with

goes

function

prevent

which

pulses.

33

the

coag

high

false

is

pulse.

and

is

to

computations.

triggered

persists

stop

The

the

first

by

is

single

for

about

microprocessor

The

second

the

sense

5

PCB

The

one-shot

also

shorter

The

width.

on

which

The

clock

The

CSCT

LED,

drives

CUT

C610

is

CUT

flip-flop

or

CR601,

Voltage

supply

The

test

U606/10,

the

flip-flop.

The

power

set

by
integrated
to

either

pulses

and

set

pulse

The

to

the

enabled

flip-flop

cleared

the

mode

point

for

U606/11

supply

the

by

4.0

output

the

coag and

and

width

MC

clock

rapid

by

output

saturation

indicates

operation

VMO/CMO

is

set

VR

clock

U621/14

or

2.4V

(M)

boosts

is

unclamps

ramp

the

is

by

the

passes

exceeds

set

point

to

by

asserts

cut

the

controlled

on

CCE

clock.

comprised

current

signal

current

(VMO)

8V

is'

also

and

controller

and

cleared

generate

the

R645,

pulse

power

C604

C604.

of

through

(S)

mode

with

and

done

forces

the

sense

as

the

Vs.

R646,

OFD

width

supply

in

and

C610

U610/4

a

the

operation

S

in

generator

at

VMO

by

and

control

set

a

U603

is

cut

gate

input

control

the

operation

uses

S

In

the

R647

terminates

point

manner

compares

driven

and

(CSCT)

array

VR

clock

flip-flop

or

OS.

dessicate

network.

circuits

voltage.

similar

by

U607/9.

pulse

U612

to

transmission

(CMO)

always

is

driving

until

The

any

output

in

to

a

slowly

transmission

It

is

from

which

with

rate

U606/4,

occurs

when

CSCT

flip-flop

or

COAG

CSCT

a

the

direction

the

varying

set

the

sense

selects

gate

in

when

high

the

occurs,

U605/10.

mode

pulses.

COAG

voltage

gate

by

U611/3

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the

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the

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11

SCHEMATIC

42

SECTION

7

TESTING

OPERATIONAL

The

PROCEDURE

purpose

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waveforms.

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test

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CALIBRATION

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best

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procedure

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Circuit

volts.

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controller

for

controls

test

test

a

meter

point

Board.

Board.

and

point

reading

7

test

and

2

44

4.

Adjust

A.

B.

the

Set

Attach

the

High

COAG

a

300

Voltage

display

ohm

load

Clamp:

to

30

from

watts.

the

ACTIVE

output

to

the

PATIENT

output.

C. Key

D.

E.

F.

5.

Potentiometers

power

ohm

A.

B.

C.

D.

generator

Remove

Adjust

Attach
CR3

on

COAG.
positive

peak

volts

adjustments

wattmeter.

Set

R801,

Set

CUT

300

watts

Set

CUT

watt

one

turn.

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COAG

for

120

the

the

an

an

Slowly

voltage.

voltage

while

display

display

in

PURE CUT.

watts

in

300

ohm

COAG

display

oscilloscope

output

increase

is

making

R801

of

R802

output

display

to

at

at

output

SPRAY

load.

module

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475

volts.

this

and

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the

mid-setting.

300

in

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1

watt

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at

120

in

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to

1.

with

and

the

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adjustment.

on

FORCE

watts

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and
steps

watts

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a

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chassis

COAG

on

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the

4.

and

adjust

power
the

not

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adjust

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and

power

or

and

adjust

100X

ground.

display

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let

PCB

steps

R806

R802

C

should

probe

the

are

on

if

R805

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peak

A

on

the

R802

be

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Key

and

critical

through

the

Sense

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on

30+_5

the

observe

so

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voltage

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the

the

unit

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PC

PC

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watts.

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exceed

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in

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the

peak

maximum

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of

475

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for

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than

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watt

turn.

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display

watts.

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in

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the

the

display

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steps

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step

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through

power

power

PCB),

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300

at

display

and

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steps

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using

less

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and

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than

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45

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PCB)

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if

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the

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than

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1

one

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output

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the

power.

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at 1 watt or +

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to

300

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the

generator.

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the

power. - T

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output

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power

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in

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to

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orFis

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the

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the

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output

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of

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power

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display

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power

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the

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power

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PCB),

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output

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setting

repeat

less

until

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and

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watt

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of

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then

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20

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and

key

5

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and

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PCB)

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key

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is

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or

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or

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generator

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7.

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more

until

at

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calibration

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watt

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by

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at

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watts,

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a

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the

generator

the

output

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the

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verify

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power

power

2

1

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power

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for

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and

output

display

300

check

check

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ohm

to

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75

of

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load

for

for

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200

watts,

46

200

and

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watts

watts

select

watts.

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power

power

select

output.

output.

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on

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the

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sense

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the

3.
board

generator

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until

9.

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terminals

and

B.

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control

C.

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control

Output

key

R244

R245

the

of

the

board

board

Power

wattmeter

the

generator.

on

flickers.

on

flickers.

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bipolar

the

bipolar

the

bipolar

with

output

This

This

a

100

jack.

output

sets

output

sets

board

the

board

the

ohm

load

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current

voltage

the

until

until

across

power

CR303 on

sense.

CR304

sense.

the

level

on

two

to

the

the

outside

40

watts

bipolar

bipolar

D. Check

RETURN

Equipment

1.

0-250

2. 300

3.

1200

4.

40

E.F.

PROCEDURE:

1.

Insert

ACTIVE

unit

2.

Insert

ACTIVE

displays

current

3.

Repeat

FAULT

needed:

mA

ohm

and

pf,

Johnson,

from

that

TEST

RF

meter.

non-inductive

550

ohm

110

pf,

300

ohm

to

GROUND.

footswitch.

550

ohm

to

PATIENT.

as

in

returning

step

2

the

output

PROCEDURE

non-inductive

150

pf

Part

No.

load

Set

resistor

step

through

for

Bl,

power

resistance

capacitor

154-8

from

ACTIVE

CUT

Return

from

Key

unit

1.

Return

the

B2,

B3

is

resistance

(3KV

variable

display

fault

ACTIVE

from

chassis

and

40+_4

(350

to

Fault

SOFT

watt

rated)

capacitor.

PATIENT.

to

150W

should

to

footswitch

and

COAG.

watts.

rated).

(30

watt

or

and

not

GROUND.

should

not

through

Insert

trip

rated).

COAG

Insert

with

trip

1200

display

in

any

CUT

indicating

the

ohm

mode.

300

and

patient

to

ohm

load

55W,

load

SPRAY

excessive

terminal.

from

key

from

COAG

4.

5.

6.

Repeat

Attach
picofarad

GROUND.

watts.

SPRAY

COAG.

Attach
picofarad

GROUND.

watts.

Repeat

steps

a 40

Key

Current

a 40

Key

Return

for

1,

2,

picofarad

capacitor

unit

should

picofarad

capacitor

unit

fault

Bl,

B2,

3

for

from

in

capacitor

from

in

B3

and

Handswitch

capacitor

ACTIVE

CUT.

be

less

ACTIVE

CUT.

should

SPRAY COAG.

output.

from

through

Increase

than

from

through

Increase

trip

before

47

ACTIVE

CUT

250

ACTIVE

CUT

to

0-250

Level

mA.

to

0-250

Level

current

GROUND.

RF

Control

Repeat

GROUND.

RF

Control

reaches

Attach

milliamp

from 1

for

Bl,

Attach

milliamp

from 0

250

another

meter

to

B2,

B3

another

meter

to

milliamps.

40
to

300

and

110

to

300

7.

Attach

terminal

watts.

picofarads.

B2,

B3

a 40

open.

Return

and

picofarad

Key

SPRAY

Key

fault

unit

COAG.

capacitor

the

should

as

unit

above.

not

in

from

PURE

trip.

Return

ACTIVE

CUT

Now,

fault

with

to

CUT

change

should

GROUND.

Level

the

trip.

Leave

Control

capacitor

Repeat

patient

at

150

to

150

for

Bl,

RETURN ELECTRODE MONITOR

Connect

connector.

5.00V

value

resistance

gradually

ohms).

Continue

alert

Repeat

resistance

resistance

alert

LINE

This

The

The

IK ohm

capacitor

frequency

has
calculated

the

2.0

a

variable

at

J101/19

at which

again

and

Decrease

to

again

above

should

FREQUENCY

test

measures

FORCE4is

current

resistor

is

noise

little

resistor.

microamps

Set

the

record

decrease

turns

test

to

150

and

record

remain

(50/60HZ)

left

is

measured

connected

generated

effect

from

I^E/R,

The maximum

leakage

resistance

resistance

or

J401/22.

the

REM

to

50

the

resistance

on

(5+^2

set-up

ohms.

off

potentially

ON

to

ground

on

is

(REM)

TEST

across

to

Decrease

alert

ohms

and

wait

the

value

and

the

resistance

ohms).

utilizing

Note

value

below

CURRENT LEAKAGE

BUT

at

NOT

that

which

this

dangerous

KEYED.

indirectly

from

across

the

where

the

by

the

50/60

R = IK ohms

acceptable

0.002

volts

PROCEDURE

the

150

ohms

the

turns

for

at

which

note

and

a

the

REM

value

by

observing

each

IK

ohm

oscillator

Hz

leakage

voltage

(2

millivolts).

PATIENT

and

adjust

resistance

off

(130

six

seconds.

the

REM

that

record

non-REM-type

REM

alert

and

TEST

50/60

the

alert

turns

turn

on

PROCEDURE

Hz

the

front

panel

resistor

inside

current.

andEis

across

terminals

+_

20

alert

REM

the

connector.

is

again

leakage

voltage

jack.

to

the

the

using

R118

gradually

for

a

and

ohms)..Decrease

Increase

alert

value

on.

off

currents.

turns

(20

if

the

on

again

at

which

Set

Gradually

j^ 5 ohms).

above.

developed

A

0.15

remove

unit.

any

trace

This

Leakage

voltage

the

measured

IK ohm

a

REM-type

reading

record

resistance

(70

turns

the

variable

decrease

across

microfarad

of

capacitor

current

resistor

the

the

+_

off.

REM

REM

high

across

for

of

10

a

is

INPUT

CIRCUIT:

0.15

mf

VW

1000

48

10.2

—y\AA-

ohms

ohms

NOTE:

current

make

keyed,

millivolts

of

currents

a

sophisticated

Because

in

the

50/60

there

of

do

not

of

RF

Hz

can

50/60

the

signals

leakage

be

measuring

change

extreme

measurement

as

much

Hz.

significantly

when

This

difference

the

generator

as

9000

ratio

techniques.

when

volts

(110

when

in

the

peak

db)

In

the

magnitude

is

keyed,

unit

is

to

of

voltages

practice,

unit

is

keyed.

peak

keyed.

of

it

the

is

of

would

the

50/60

very

When

RF

50/60

Hz

difficult

the

compared

require

Hz

leakage

unit

to

the

use

leakage

to

is

20

Third

the

maximum

50

test.

The

AWG

wire

wire

The

leads

and

transformer

secondary.

The

in

current

BIPOLAR

measured.

to

wire

plug

millivolts.

typical
line

leakage

leakage

line

the

current

series

this

and

voltage

cords.

frequency

when a

chassis.

with

should

OUTPUT

test

leakage

connecting

value

and

should

110

with

is

be

RF

the

The

readings

across

Commercially

calculated

the

ground. Caution:

outputtothe other

current

of

Longer

are

not

be

sink

volt,

The

a

120K

110

less

LEAKAGE

RF

leakage

will

is

the

the

IK

50

microamps
line

recommended.

less

than

leakage

50/60

voltage

ohm

from

volt

than

150

TEST

are

Accidental

result

measured

IK

ohm

available

cords

10

is

Hz

current

the

source

microamps.

PROCEDURE

current

made

in

by

ohm

resistor

resistor

is

valid

or

extension

With

microamps.

the

current

potential

source

voltage

and

to

earth

with

an

connection

instant

opening

for

leakage

for

the

is

applied

should

limiting

measured

the

PATIENT

ground from

RF

ammeter from

of

destruction

the

green

from

testers

factory

50

microamps

cords

chassis

may

installed

will

FORCE4turned

that

will

pass

between

be

a

resistor

across

or

the
either

the

meter

of

the meter.

grounding

to

leakage

be

increase

into

110

in

a IK ohm

ACTIVE

bipolar

from

ground.

used

10

off,

a

PATIENT

volt

series

jacks.

bipolar

one

wire

would
for

foot
the

the

the

patient

isolation

resistor

output

bipolar

this

16/3

third

third

lead

with

This

output

at

The

be

a

is

Connect a 250

milliamp

ground. Connect a 40

may

be approximated

bench.

leakage

CHASSIS

Check

chassis

resistance

four

impedance

longer

Set

to

GROUND

for

and

wire

cords

the

ground

INTEGRITY

the

existence

the

third

when

resistance

of

measuring

0.1

is

not

Bipolar

should

ohm

recommended.

RF

ammeter from one

picofarad

by

level

not

TEST

of

wire

this

measuring

is

for

capacitor

draping

exceed

to

a 10

20

150

PROCEDURE

a

low

impedance

ground

technique

the

plug.

impedance

standard

49

of

from

foot

watts

milliamps.

be

connection

To

(0.1

used.

10

foot,

and

avoid

the

bipolar

the

other

accessory

key

any

ohm),

the

it

cord

between

problems

is

The recommended

16/3

AWG

output

output

to

across

generator.

the

with

recommended

maximum

line

cord.

jacks

ground.

the

test

The

generator

contact

that

Use

to

RF

a

of

SECTION

8

TROUBLESHOOTING

I.

Introduction

The

FORCE

.generator

Replacement

greatly

module

returned

In

this

boards

these

II.

Symptoms

Each

a

particular

to

your

Symptom 1 - No

simplify

will

to

procedure

or

connections.

symptom

unit.

fault

PROCEDURES

4

is

should

of

a

help

Valleylab

connectors.

listed

assembly.

monopolar

lights

a

modular

consider

suspected

stocking

defective

troubleshooting.

isolate

the

refers

for

technician

Power

RF

on

the

repair

should

to

Check

output.

front

unit

malfunction.

or

is

a

particular

this

panel.

and

anyone

the

modules

module

Replacement

partial

instructed

be

list

Display

credit.

OFF

to

Audio

attempting

can

of

Defective

to

when

procedure

determine

works

either

tones

listed

save

normally.

in

a

suspected

unplug

and

which

CUT,

hours

making

to

in

boards

printed

in

some

are

COAG

repair

Section
of

time

defective

or

breaking

cases

applicable

No

alert

are

the

10.

and

can

circuit

normal.

be

to

or

Symptom

Symptom

2 - No RF

3 -

Symptom 4 -

Symptom 5 -

Symptom 6 -

output

alert

are

normal.

defective

One

or

must

CUT,

be

COAG,

Incorrect

tones.

All

displays,

display

output

normal.

display

current

Unit

appears

briefly

mode.

or

fault

more

activated

settings.

in

settings.

shut-off.

on

in

Also,

and

you

RF

or

Bipolar

audio

audio

monopolar

Output

non-functional.

power-up

monopolar

lights

indicator

follow

have

at

on

first

a

modes

for

CUT/COAG

tones

However, when

or

modules

High

or

power-down.

CUT

front

this

followed

lamps

display

to

correct.

bipolar

J1103

voltage

modes

panel.

procedure

out

setting

activate

warning

settings

modes

thru

power

Display

only

Audio

if

procedure

(CUT,

RF

tones,

RF

J1107

supply

Unit

will

or

COAG

both

COAG,

greater

indicator

or

power

are

is

may

is

modes

tones

CUT

1.0.

MBP).

than

for

correct

increased,

30%

may

dead,

not

in

and

3

lamps.)

alarm

or

more

fail

go

or

activate

only.

CUT,

COAG

(FORCE 4

watts

warning

at

at

higher

into

flickers

in

No

COAG

are

in

low

power

below

over-

any

50

Symptom

7 -

REM

circuit

terminating
impedance

defective.

impedance

is

incorrect.

is

REM

present,

alarm

enables

or

REM

even

does

though

not

alarm

proper

when

Symptom

Symptom

Symptom

Symptom

NOTE:

8 -

Return

9 -

Front

(cannot

OK.

10-Inability

11

- No

For

bipolar

activates

JXXX

Schematic,

Fault

Panel

(See

number

Figure

be

changed

Symptom

to

output.

normally.

defective.

displays

6)

key

one

identification,

17.

show

by

or

incomprehensible

power

all

Monopolar

buttons).

handswitches.

output

refer

OK.

All

to

pattern

power

Audio

System

or

supplies

tone

Interconnect

are

in

frozen

check

bipolar

52

SYMPTOM

NO

MONOPOLAR

FRONT

1

PANEL.

RF

AUDIO

OUTPUT.

TONES

DISPLAY

IN

CUT,

WORKS

COAG

NORMALLY.

ARE

NORMAL.

NO

ALERT

OR

FAULT

LIGHTS

ON

1.1

IF

SIGH

CONNECTIONS

FROM
TO TRANSFORMER
FACE

ASSY

(FIG.23)

(FIG.15).

ON

STRIPLINE

OK,

GO

1.21

SUPPLY
PROBABLY

BE

AT

IF

ON

+15V

CHECK

TO

FUSt;

HIGH
OK.

OR

VOLTAGE

STRIPLINE

ASSY

RELAYS

PCB.

SYMPTOM

IS

VOLTAGE

CHECK

OV.

IS

(FIG.

INITIAL

CHECK

POINT

(FIG.

OK,

PCB

16)

PROCEDURE

FOR

2

OF

45).

CHECK

(FIG.35)

TO

TO FRONT PANEL

K1101,

IF

ALL

CHECK

2.

GOOD,

TP

(FIG.

U

51)

THEN

SECTION

WHICH

HIGH

POWER

ALL

INTER

ASSY

K1102,

OUT

POWER

SHOULD

VOLTAGE

IS

1.0

SUPPLY

60+2V

CONTROLLER

1.2

LESS,

(FIG.

1.211

SAME

(FIG.

PROBLEM

Q2006,

CHECK

IF

WAVEFORM

Q1904

TO

T2

ON

IF

CHECK

51)*

IF

PCB.

14).

T1901

ON

ON

TEST

PCB

HIGH

VOLTAGE

Fl

TP 8

COMPARE

IF

IS

U2003,

OR

R8

ON OUTPUT PCB

IS

FIG.

FIG.

51.

IS

ON

POWER

IS

HIGH,

WAVEFORM

U2004,

SUPPLY

CHECK TP 5 ON

WITH

IS

J2001,

ON CONTROL

CORRECT, CHECK

43.

ALSO CHECK WIRING

AT

10V

OR

MODULE

PHOTO

# 1

NOT CORRECT

Q2005,

PCB.

(FIG.

ALSO

43).

Q1901-

1.212

(VP7)

52

IF

AND RDY

TP 8

(PIN

IS

LOW, CHECK -H.5V

3,

J2003)

(FIG.

45).

1.22

IF

POWER

COMPARE

NOT

REPLACE

Fl

SUPPLY

WITH

IS

OPEN,

CONTROLLER

PHOTO # 1

FUSE.

h

CHECK TP 5 ON

PCB

(FIG.

(FIG.

14).

45).
DO

1.221

IF

ASYMMETRICAL,

FIG.

FIG.

RECT,

FIG.

WAVEFORM

45.

43.

CHECK

45

OR

RETURNS

WAVEFORM

REPLACE

ALSO

IF

WAVEFORM

U2003,

T1901

CHECK

U20U4,

ON

FOLLOW

IS

INCORRECT,

y.2005,

yl901-yl904

IS

FIG.

STEP

STILL

J2001,

43.

1.222.

Q2006

INCOR

OK

ON

ON

R8 ON

WHEN

1.2121

± ,5V,

LIMITED

THE

HIGH

OUTPUT

PCB.

HIGH

REMOVE,

MODULE

RETURNS.

IF

THEN

BECAUSE

VOLTAGE.

MODULE,

REACTIVATE

VOLTAGE

ONE

J1103-J1107

SB?

POWER

(+6QV)

IS

LOW

SUPPLY

OF

EXCESSIVE

REMOVE

J1103

SSE4

IDLE.

BY ONE,

UNTIL

AND TP 7 IS

IS

LOAD

THE

ON

THE

STRIPLINE

AND

CHECK

CONTINUE

EVERY

HIGH

+15V

CURRENT

ON

FIRST

FOR

TO

OUTPUT

VOLTAGE

1.222

CHECK

IF

Q1901-Q1904

DEFECTIVE

UNIT.

ON

Fl

IF

POWER

STAYS

(+60V)

1.2121.

1.21211

REPAIR

CHECK

REPAIRED

OUTPUT

CHECK

(TEKTRONIX

WITH

TESTING

TO

7.4.

1.21212

RETURN,
PCB

Ql, CR2, CR3.

EACH

PHOTO

CHECK

OR

PARENT

WAVEFORMISCORRECT AT TP

Q's;

Fl

SUPPLY

GOOD

DOES

IF

DEFtCTIVE

AND

AT

A

MODULE

P6021,

# 2 (FIG.

PROCEDURE

HIGH

IF

SEARCH

(FIG.

REPLACE

FAILS

MODULE

BUT HIGH

NOT

RETURN,

HIGH

REINSTALLED,

SETTING

WITH

OR

SECTION

VOLTAGE

HIGH

FOR

PCB

(FIGS.

AGAIN

VOLTAGE

OUTPUT

WHEN

OF

A

EQUIV.)

14).

VOLTAGE

SHORT

43).

Fl.

SUSPECT CR4

(FIG.

VOLTAGE

FOLLOW

MODULES ARE

CHECK

10W

CURRENT

THEN

7.

CLAMP

IN

35

AND

REPLACE

TURN

51).

IDLE

STEP

RETURNS,

MODULES.

POWER

IN

COAG.

PROBE

COMPARE

FOLLOW

BE

SURE

SECTION

DOES

STRIPLINE

NOT

18).

5,

ON

IF

1.2122
J401

PIN

MONOPOLAR

1.2123

GO

TO

SYMPTOM

IF

10,

DISPLAY

IF

RDY

TP

J402

7

6.

IS

HIGH,
PIN

BOARD.

IS

NOT

34,

CHECK

FOR

AT

+15V

FIG.
RDY

±

19,

FROM

.5V,

53

SYMPTOM

NO

FAULT

FOLLOW

FOLLOWED

INITIAL

PUT

EXTENDER

TP601,

PHOTOS

ACTIVATE

"G".

2.2

AND

THESE

THE

"Gw

WIDTH

SHOULD

OF

THE

FOR

WHEN

MAXIMUM,

PULSE

2

RF

OUTPUT

LIGHTS

THIS

PROCEDURE

PROCEDURE

CLOCK/CONTROL

CARD

SIGNAL

# 3

SSE4

IF

"G"

OFD*

AT PINS 8, J OF FIG. 29.

WAVEFORMS

WAVEFORMS.

OF

THE

VARY

MODE

EXAMPLE,

ACTIVATED

THEN

WIDTH

IN

PROCEDURE

AND

THRU

IN

IS

WAVEFORMS

WITH

BEING

PURE

OND

CUT

IN

MONOPOLAR

ON

FRONT

2.0

BOARD

OBSERVE

7

*

EACH

MODE

CORRECT,

SHOULD

HOWEVER,

THE

ACTIVATED.

CUT

WITH

SHOULD

(SAME

1.0.

WAVEFORM

COMPARE

ON

OBSERVE

BE

OND

DISPLAY

HAD

FOOTSWITCH

AS

PANEL.

IF

J601

FIGURE

AND

SIMILAR

THE

NO

HAVE

NG*).

CUT

BOTH

OBSERVE

PULSE

AND

SETTING

BUT

OUTPUT

WITH

14.

OND

OFD

IF,

FULL

MODES

AUDIO

CUT

ON

ON

TO

AT

AND

ONLY

TONES

COAG

2.1

OR

IN

ARE

COAG

CUT,

DEFECTIVE

IF

MODE, EXAMINE

ON CLOCK CONTROL PCB

88).

CHECK

(FIG.

CHECK

U616

WAVEFORMS

2.21

STILL

ON

IF

Y401,

19).

U615,

ON

IF

NO

THE

(PHOTO

# 8 )

2.22 IF

750KHZ

FIG.

(FIG.

OND,

RF

DRIVER

OND

CHECK PIN

PIN

L,

CSCG

PCB

(FIG.

29).

MODES

COAG

IS

750KHz

WAVEFORM

U405,

IF

ONLY.

ARE

NORMAL.

AND

YOU

NOT

CORRECT

WAVEFORM

(FIG.

U412

WAVEFORM

NO

HAVE

29,

IS

INCORRECT,

ON

CPU

IS

ALERT

AT

CORRECT,

U614, U608, U609, U610,

29.

8

OFD

OUTPUT,

PCB

OR

K,

C3CS FOR CUT

FOR

).

ARE

(PINS

OFD

COAG

REFER

OK

CHECK

9,

BUT

T/ON,

10

TO

THERE

FIG.

IS NOT CORRECT,

MODES,

MODES

ON

ALSO,

FIRST

IN

ANY

PIN

PHOTO

BOARD

TIMING

T/OFF

33)

AND

CONTROL

OR

W

IS

54

2.211

THERE

IS

IF

T/ON,

NO

•2U04-O.1106 ON

IF

THEY

ARE

OK,

T/OFF

RF

OUTPUT,

STRIPLINE

GO

TO

STEP

ARE

THEN

PCB

1.2.

OK,

BUT

CHECK

(FIG.35).

2.212

CHECK

IF £1106 IS OK,

£1002,

2.221

CSCT

THEN

"ECON",

19).

.3"

DISPLAY.

TEST.

2.222

CSCG

THEN

2.221.

AT

VDC

58W

IF

Q1006

Q1008,

IF

SHOULD

PROBLEM

TP

"ECON"

IF

SHOULD

FOLLOW

"ECON"

IN

T/ON,

THERE

BE

404

FOR

CUT

THERE

COAG

ON

CR1001,

AT

IS

ON

SHOULD

150W

BE

AT

THE

SHOULD

1.

T/OFF

DRIVER

CHECK

IS

+12V.

IN

SENSE

THE

MUST

IS

+12V.

SAME

ARE

NOT

PCB

Q1007, O.10U,

CR1002.

NO

CUT

IF

PCB

CPU

BE

APPROX.

IN

PURE

BE

ACTIVATED

NO

COAG

IF

PROCEDURE

BE

3.5

CORRECT,

(FIG. 33).

RF

OUTPUT.

IT

IS

NOT,

OR

SIGNAL

BOARD

(FIG.

2.1

CUT

RF

OUTPUT,

IT

IS

+

.3

NOT

VDC

2.223 IF THERE IS NO CUT RF OUTPUT,

CSCT

SHOULD

ACTIVATED. IF
OUTPUT,

COAG

MENTS

IS

DESCRIBE

CLOCK/CONTROL

U602
COAG,
TIMING

AND

BE

CSCG

ACTIVATED.

ASSOCIATED

AND

U603

WAVEFORMS

AT

SHOULD

PCB

-1-12

THERE

THE

IS

FOR

(FIG.

VDC

IS

BE

AT

IF

THESE

SYMPTOM,

DEFECTIVE.

CIRCUITRY
CUT.
8 ).

WHEN

NO

+12

CUT

COAG

VDC

THE

REFER

WHEN

STATE

THE

CHECK

FOR

ON

TO

AS

TO

IS

RF

2.2211
VARY

U416

CHECKJ12

WITH

ON

IF

DISPLAY

CPU

01

"ECON"

BOARD

FOR

IS

AT

SETTING,

(FIG.

INTEGRITY.

0V

OR

CHECK

19).

DOES

NOT

U415,

ALSO

+

2.2212

SENSE PCB

Q809, U802, £810,

IF

"ECON"

O.801,

IS

CORRECT,-

CHECK

U801, U808, U805,

AND

vj811.

55

SYMPTOM

3

3.1

DS1303

DS1213

ONE OR

AT

A

DISPLAY

ACTIVATE

ONLY

FOR

FOR

COAG.

MORE

RF

ONE

BIPOLAR,

RF INDICATOR LAMPS OUT (CUT, COAG, MBP)

SETTING

INDICATOR

LAMP

DS1205

INITIAL

DETERMINE

OUT.

GREATER

LAMPS.)

PROCEDURE

REPLACE

FOR

CUT,

THAN

WHICH

3 WATTS

3.0

LAMPS

IN

CUT,

ARE

OUT.

3.2

ALL

CUT

AT

5 WATTS AND OBSERVE LE J

ON INTERFACE PCB

RESEMBLE PHOTO # 9

CUT

IS

NOT

OV

WHEN

(SSE4

MUST BE ACTIVATED

COAG, OR BIPOLAR

THREE LAMPS

ACTIVATED.

CUT

IS

ACTIVATED.

OUT.

(FIG.

(FIG.

MODES

ACTIVATE

101-16

23).

LE SHOULD BE

LE SHOULD

14).

TO

IN

WHEN

AT

3.21

STILL

(FIG.

DISPLAY

LE

OUT.

19)

(FIG.

SIGNAL

SUSPECT

OR

37).

CORRECT,

U403

U1202

ON

ON

ALL

LAMPS

CPU

PCB

MONOPOLAR

3.22

TO

D1213

IF

ZS"

GROUND

•WHEN CUT

LAMPS

INTERFACE

CR103,

IF

U403

U1202

C123,

LAMPS

(FIG.

(FIG.

SIGNAL INCORRECT.

AND OBSERVE

IS

ACTIVATE,

PCB.

DON'T

19)

CHECK

CR108,

ACTIVATE,

OR MONOPOLAR

37).

D1205, D1303,

KEYED

PROBLEM

CR104

SHORT

AT

5

(J101,

ON

FIG.

CHECK CPU

DISPLAY

WATTS.

IS

U1Q9,

23.

ZS

IN

56

SYMPTOM

4

INCORRECT

4.1

IDENTICAL

Q401

4.2

CHECK
WAVEFORM

Hz FOR

TP

COMMON

IF

ON

IF

405

ON

AUDIO

COAG

TO

CPU

PCB

AUDIO

PIN

SHOULD

CUT,

FOR 6

TP

FOR

CUT/COAG

INITIAL

ISOLATE

COAG,

DESCRIPTION

ADJUSTMENT, NO

AUDIO

CUT

AUDIO

(FIG.

ABSENT

6

OF

U421

BE 2

lKHz

FOR COAG.

VOLT

P-P

406.

WARNING

PROCEDURE

TONES,ORFOR

4.0

MALFUNCTION TO MODE, (CUT

ALARM, OR

TONE

TONE,

ALL

THREE) AND TO

(VOLUME TOO

VOLUME

SOUNDS

CHECK

AT

ALL.)

HIGH,

19).

OR

DISTORTED,

ON

VOLTS

WITH

FIG.

P-P

ALSO

SCOPE

AT

CHECK

PROBE

19.
400

ALARM

WARNING

TONES.

NO

4.21

IF

SIGNAL

ON

U421,

CORRECT, BUT ' SIGNAL AT TP

INCORRECT,

U418.

4.22

CHECK
C416, C417,

(FIG.

IF

CHECK

19)

SIGNAL

OSCILLATOR

AND

U421, U420,

ON

U421

COMPONENTS

ASSOCIATED

IS

PARTS.

PIN

6

405

U419,

INCORRECT,

R417,

IS

IS

4.3

IF

AUDIO FOR ALARM TONE

WITH VOLUME

CUT,

COAG DOES NOT

SWITCH,

CPU

VOLUME

VOL

IF
PCB.

VOL

AND THRU

(FIG.18).

CHECK VOL

PCB

(FIG.

LOGIC

2

VOL

SIGNALS

IF

1,

VOL 2 ON SPEAKER PCB

1

ARE

NOT,

SWITCH,

19)

IS:

VOLUME

VERY

HI
LO

VERY

OK,

VERIFY

PARENT

OR

VARY

1,

VOL 2

PINS

HI

LO

PROBLEM

PCB

IF

WITH

SIGNALS

F AND

CORRECT

CONNECTIONS

AUDIO

6.

IS

SIGNALS

(FIG.

VARIES

FOR

VOLUME

THE

IN

CPU

41)

ON

57

SYMPTOM

ALL

DISPLAYS,

HOWEVER,
MODES

AT

HIGHER

CURRENT

5

IS

SHUT-OFF.

WHEN
30%

DISPLAY

AUDIO

SETTINGS

OR

MORE

TONES

ARE

BELOW

SETTINGS.

CORRECT.

INCREASED,

NORMAL.

HIGH

RF POWER

POWER

OUTPUT

VOLTAGE

CORRECT

OUTPUT

MODULES

POWER

AT

IN

J1103

SUPPLY

LOW

DISPLAY

MONOPOLAR

THRU

MAY

J1107

GO

SETTING.

OR

MAY

INTO

BIPOLAR

FAIL

OVER-

INITIAL

USING

P6021

CURRENT
COAG

FIGURE

WILL

WAVEFORM

PROCEDURE

AC

OR

IN

A?

14,

BE

MUCH

EQUIVALENT.

AN

X100

PCB

(FIG.

ACTIVATE

OUTPUT

100
OUTPUT.

11.

CR602

IT

UNIT

SHOULD

WATTS.

WHEN

ON

SHOULD

IS

NOT

AT

ACTIVATED

CURRENT

EQUIV.)

EACH

A

SETTING

PHOTO 8 2 .

LESS

SHOULD

ALSO

PROBE

ON

35).

SSE4

WITH

E8.

USE

COMPARE

CUT

IS

CLOCK/

COME

ON

COME

ON

5.0

PROBE

(TEKTRONIX

MEASURE COLLECTOR

MODULE

OF

J1103-J1107

25

WATTS.

PEAK

THAN PHOTO 8 2 ,

LOOK

MONITOR

E8

(PHOTO

FOOTSWITCH

ACTIVATE

A

WITH

ACTIVATED,.

CONTROL

FOR

IN

IN

OF

300

FIG.

ANY

COAG.

THE

810,

OHM

BOARD

.3

CUT

VOLTAGE

PURE

14,

NOTICE

SECONDS

CURRENT

GENERALLY

WITH

STRIPLINE

FIG.

14)

TO

GIVE

CUT

LOAD

PHOTO

(FIG.29)

WHEN

MODE.

IN

SEE

BUT

AT

AT

LED

5.1

IF

CR602

DOES

NOT

KEYED,

CHECK

5.2
DURING

MODE

ON THE

811)

A

8

IT

NORMALLY

31.

THAN

THIS

POWER

OVER-SATURATION

3

+3VDC

WHEN

CUT

PAST

100

THE

J,

IF

THE WHOLE

IS

STRIPLINE

MAY BE

MINIMUM

IF

6 V

INDICATES

SUPPLY

(VS)

ON

WHEN

THE

MODE,

+4V

WATTS

ACTIVATED,

ON

COME

It CIRCUIT

OS,

PINS

CR602

INCORRECT.

VOLTAGE

ADJUSTED

THIS

FOR

IS

FIG.

THE

GENERATOR

THIS

WHEN

IN

PURE

THE

ON

BRIEFLY

P,

COMES

PERIOD

PCB

MINIMUM

THE

THAT

NOT

CONDITION.

45.

GENERATOR

VOLTAGE

THE

POWER

CUT.

CLOCK/CONTROL

WHEN

IS

9 ON

FIG.

ON

AND

THAT

THE

WAVEFORM

(FIG.

IT

OF

+15V.

WITH

IS

R803

VOLTAGE

ACTIVATION

THE

HIGH

RESPONDING

IT

SHOULD BE

ACTIVATED

SHOULD

SETTING

PCB

CUT

IS

DEFECTIVE.

31.

STAYS

14),

A

AT

PHOTO

ON

CUT

E2

SHOULD SHOW

THIS

ON

MEASURE

FIG.

IS

LESS

PERIOD,

VOLTAGE

TO

IS

THE

TP

AT

IS

IDLING.

IN

ANY

GO UP

IS

AT

5.3

PROCEDURE

WATTS
PLACE
MEASURE

NOT EXCEED

116

VOLTAGE.

58

IF

WITH

PROBE

WATTS

THE

ALL

5.0,

THE

475V

IN

WAVEFORMS

ACTIVATE

OUTPUT

ON

PEAK

PEAK.

COAG

OPEN

STRIPLINE

VOLTAGE.

AND

LOOK

COAG

CIRCUITED.

PCB

IT

IF

OK,

NOTE CLAMP

OK

AT

E8.

SHOULD

GO TO

IN

58

5.1i

FIRST

IF

.3

CHECK
CIRCUITRY

S OR

SECONDS OF

U806,

ON THE

OS

U807,

SENSE

IS

NOT LOW FOR THE

ACTIVATION

AND

PCB,

ASSOCIATED

FIG.

IN

CUT,

31.

5.12

.3

IF

SECONDS

S,

OF

OS

ARE

ACTIVATION

LOW

H, A 1 MS ONE-SHOT SIGNAL

4.

IF

M

IS

NOT

ENABLED,

U619, U614, U613, U611,

5.21

PROPERLY",

SUPPLY,

ASSOCIATED
SHOULD

VOLTAGE

COLLECTORS

AT

5.22

+4V

ACTIVATED

CHECK VR

TIMING

U616,

+15V

IF

CHECK

INCREASE

MINIMUM.

IF

TP 3

OR

PIN

DIAGRAM

U621,

TP 3

THEN

PROBLEM

U2007,

PARTS.

FROM

NECESSARY

VOLTAGE

(VS)

HIGHER

AT

150

6 OF

(FIG.

AND

ASSOCIATED

(VS)

R2061,

THE

60V

TO KEEP THE

(E2

DOES

WHEN

WATTS

U616

8).

FOR

THE

FIRST

IN

CUT,

CHECK

AT

U618,

CHECK

CR602

DOES

IS IN

HIGH

RAMP

U2008,

VOLTAGE

U618,

POWER

AND

UP TO THE DC

ON STRIPLINE)

NOT RAMP UP TO

THE

SSE4

IN

CUT,

(FIG.

CHECK

PARTS.

THEN

29).

U60S,

PIN

UP

IS

SEE

5.31

BUT

ON

5.32

VOLTAGE

CIRCUITRY

U1002,

DRIVER

CONNECTIONS

POWER

CONNECTIONS

THROUGH THE

IF

VOLTAGE

FIG.

33

IF

Q1001,

PCB

SUPPLY

CLAMP

EXCEEDS

FOR

NO

EXCEEDS

IS

TO

TO

PARENT

DOES

475V.

CLAMP

500V,

DEFECTIVE.

AND

ASSOCIATED

(FIG.

R3,

MODULE

THIS

PCB

SEEM

485V,

33).

750

TO

BE

ADJUST

IS

NOTICED

THE

CHECK

ALSO

OHM, ON THE

(FIG.

RESISTOR

(FIG.

18).

WORKING

R1001

CLAMP

U1001,

PARTS'

CHECK

TRAVEL

AND

ON

51).

59

SYMPTOM

6

UNIT

OR

INITIAL

CHECK

SUPPLY

CHECK

CHECK

CHECK

PROCEED

REPLACE

BLOWS
CR2001,

LOOK

THE

THE

OVER-VOLTAGE

Fl

TO

APPEARS

POWER-DOWN.

PROCEDURE

+15V

SUPPLY

CONTROLLER PCB

+5V

SUPPLY

-5V

SUPPLY

Fl

ON

FIG.

WITH

6.1-6.3.

AND

REACTIVATE

AGAIN,

R2002,

FOR

+15V

BLOW.

R2001

EXCESSIVE

SUPPLY.

NON-FUNCTIONAL.

UNIT

WILL

6.0

AT

TP

7 ON POWER

(FIG.

AT

PIN

4

AT

PIN

5

51.

IF

Fl

IF

Fl

UNIT.

CHECK

Q2001,

ON

FIG.

EXTERNAL

SCR2001,

CROWBARS,

NOT

OF

OF

IS

45.

LOAD

SCR2002,

CAN

45).

P2003.

P2003.

IS

BLOWN,

IF

Q2002,

ALSO

CAUSE

DISPLAY

ACTIVATE

OK,

Fl

ON

IS

IN

DEAD,

ANY

MODE.

6.1

REGULATION,

STEP

Q2001,

+1SV

SUPPLY

U2006

CIRCUIT.

6.2

REGULATION,

MODULE

ABOVE

SUPPLY

FAILURE

(FIG.

REGULATION.

OR

IF

6.2.

SUPPLY

IF

IF

-3.5V,

21)

FLICKERS

+15V

FIRST

IF

Q2002,

WITH

WILL

THERE

THE

CHECK

(FIG.

THROUGH

OF

<J± ON ANY

CAN CAUSE

BRIEFLY

IS

MORE THAN

-5V

R2002,

R34

CURRENT

IS

-5V

51).

IT

WILL

CHECK

SUPPLY

(FIG.

AN

SUPPLY

Ul,

IF

DISABLE

Q2007

-5V

ON

.5V

-5V

IS

R2001.

45).

LIMIT

EXTERNAL

IS

CR2

-5V

SUPPLY

(FIG.

OUTPUT

TO GO OUT

POWER-UP

OUT OF

SUPPLY,

OK,

CHECK

ADJUST

+15V

THROUGH

SHORT

OUT

ON

SUPPLY

GOES

THE

+15V

45).

MODULE

OF

OF

6.3

OUT

OF

SUPPLY.

U2001,

WILL

EXCEEDS

6.4

DISPLAY

IF

+5V

REGULATION,

IF

Q2004

CURRENT

1.7

IF

IS

SUPPLY

+15V

ON

FIG.

LIMIT

AMPS.

ALL

SUPPLIES

SCRAMBLED,

IS

MORE

FIRST

SUPPLY

IS

45.

IF

EXTERNAL

GO TO SYMPTOM

ARE

THAN

CHECK

OK,

+5V

CHECK

SUPPLY

OK

,3V

+15V

LOAD

AND

9.

60

SYMPTOM

REM

CIRCUIT

IMPEDANCE

7

IS

DEFECTIVE.

PRESENT,

OR,

REM

REM

ALARM

DOES

NOT

ENABLES

ALARM

EVEN

WHEN

THOUGH

IMPEDANCE

PROPER

IS

INCORRECT.

TERMINATING

7.1

IS

IF

EREM

IS

SV +

.IV,

IN

CPU BOARD. REPLACE CPU

INITIAL

CHECK

150

PROCEDURE

J101

PINS

OHMS

TERMINATING

THEN PROBLEM

U414

OR

REPLACE ENTIRE PCB AND RETURN FOR

REPAIR.

7.0

19,

W FOR EREM »

IMPEDANCE.

7.2

CHECK

EREM

U105,

COMPONENTS

SHOULD

U108,

OF

IMPEDANCE.

IF

ADJUSTMENT

IS

U104, U108,

SHOW A

PIN

7.5V

SV

AT

EREM

IS

OUT

R118

VERY

ON

LOW,

FIG.

140

CHECK

23.

KHZ

1 SHOULD SHOW A

AT

150

OHMS

OF

(FIG.

AND

SQUARE

REGULATION,

23).

L101,

U103,

ASSOCIATED

U104

PIN

WAVE.

D.C.

LEVEL

TERMINATING

IF

1

61

SYMPTOM

8

RETURN

FAULT

DEFECTIVE.

INITIAL

NOTICE

IS

ACTIVE

(FIG.

WHEN

150

AND A

TERMINAL

SHOULD

CAPACITOR

PROCEDURE

WHETHER

RESPONDING

TO

GROUND.

21)

SSE4

IS

WATTS

150pf

TO

BE

IS

U109

ACTIVATED

WITH

CHASSIS

LESS

REMOVED.

8.0

THE

RETURN

TO

CAPACITIVE

CHECK

PIN

2 FOR

OUTPUT

CAPACITOR

THAN

INTERFACE

IN

OPEN

FROM

GROUND.

+.3V

FAULT

LOAD

+.8V

PURE

CIRCUITED

WHEN

ALARM

FROM

PCB

+

,2V

CUT

AT

ACTIVE

VOLTAGE

150pf

8.1

IF

CORRECT,

JlOl

PIN

CAPACITOR

CHECK FOR
IS

REMOVED.

CORRECT,
SAME

RTF

VOLTAGE

CHECK FOR

17,

U

IS

INSERTED

LOGIC

LO

IF

SUSPECT

SIGNAL

AT

AT

(FIG.

(OV)

JlOl

CPU

CPU

U109

LOGIC

PCB.

J401,

23)

WHEN

PIN

PIN

HI

WHEN

AS

17,

CHECK

PIN

2

IS

(+5V)

AT

150pf

IN

8.0.

CAPACITOR

U

IS

FOR

X.

8.2

IF

VOLTAGE
CORRECT, CHECK
ON

INTERFACE

PCB

AT

T101,

(FIG.

U109

T103,

23).

PIN

2

CR106,

IS

IN

U109

62

SYMPTOM

9

FRONT

OK.

9.1

PANEL

(SEE

IF

DISPLAY(S)

OPERATIONAL,

CHECK

INDIVIDUAL

PROBLEMS

(FIG.

37).

SYMPTOM

SOME

U1201,

ARE

DISPLAYS

SEGMENTS

BUT

CHECK

U1202,

DISPLAY

CONFINED

6)

J1201

SHOW

INITIAL

DETERMINE
IN

OR WHETHER

RECOGNITION.

ARE

MISSING

OTHERWISE

RA1201.

DS1202-1212

TO

ONE

INCOMPREHENSIBLE

PROCEDURE

IF

SOME

AN

OTHERWISE

PATTERN

FROM

ARE

INTEGRITY.

REPLACE

IF

DISPLAY.

PATTERN.

9.0

SEGMENTS

OPERATIONAL

IS

SCRAMBLED

9.2

SCRAMBLED,

CPU

IF

U403, U407,

PROBLEM

ALL

ARE

DISPLAY,

(FIG.

PROBLEM

POWER

MISSING

BEYOND

IF

PERSISTS,

DISPLAY

SUSPECT

19).

IS

STILL

U410

SUPPLIES

INTERNAL

RESET

APPARENT,

ON

REPLACE

IS

POWER

FIG.

CHECK

HOPELESSLY

CPU

FAULT

SWITCH.

REPLACE

19.

PCB.

IN

IF

63

SYMPTOM

10

INABILITY

INITIAL
DETERMINE

MODES

BOTH.

TO

KEY

PROCEDURE

IF

ONLY,

ONE

OR

ALL

10.0

PROBLEM

IS

BIPOLAR MODES

HANDSWITCHES.

MONOPOLAR

ONLY,

OR

10.1

ONLY

VDC.

SHOULD

ACTIVATED.

LOW, CHECK

INCORRECT,

IF

CHECK

HSDS

BE

PROBLEM

C232

PIN

LOW

IF

Q213,

CHECK

5

C232

U209.

IS

(FIG.

OF

WHEN

T203.

IN

BIPOLAR

25)

MBP

OUTPUT

HANDSWITCH

VOLTAGE

IF

FOR

IS

HSDS

MODE

5-8

BOARD

IS

TOO

IS

10.2

ONLY,

ON

U101,

23).

WITH

U101,

AT

NOTED.

LM339

U101

U102

IF

PROBLEM

MEASURE

THE

U102 ON

ALL

MEASUREMENTS

REFERENCETO^d7

TO

\57

AT

CI32

+5V

FOFALL

PIN

2
2

13

13

9
9
2

1

8 MODE

2

1
9

9

MODE

HANDSWITCH

ALL

HANDSWITCH

ALL

SAMPLE

SAMPLE

HANDSWITCH

ALL

HANDSWITCH

ALL

SAMPLE
SAMPLE

MEASUREMENTS

IS

IN

MONOPOLAR

FOLLOWING

INTERFACE

TOR

OTHERS

OTHERS

LOW

HIGH

OTHERS

OTHERS

HIGH

MUST

AT

U102,

COAG

CUT

CUT

COAG

VOLTAGES

PCB

BE

C101

EXCEPT

ONLY

ONLY

ONLY

ONLY

MODE

(FIG.

MADE

FOR

SAMPLE

AS

DC

VOLTS

0

6-8

0

6-8

0

3-5

0

6-8

0

6-8

0

3-5

64

10.21

ARE

OK,

ALSO

(FIG.

PROBLEM

IF

CHECK

23).

IS

ALL

CHECK

CTE,

IN

VOLTAGES

OPI101-107
CGE

IF

OPI101-107

CPU

PCB.

PINS

ON

R,

UlOl,

(FIG.

13

ON

ARE OK,

U102

23).
J104

10.22

INCORRECT,

MINIMUM.

REPLACE

P102-105

IF

THEM.

TO

VOLTAGES

CHECK

ALSO

CHECK

FRONT

ClOl,

CHECK

PANEL.

ON

HY101,

WIRE

UlOl,

C132

U102

FOR 6 VDC

HY102

HARNESS

ARE

OR

FROM

65

SYMPTOM

NO

BIPOLAR

NORMALLY.

11

OUTPUT.

MONOPOLAR

OUTPUT

OK.

AUDIO

TONE

IN

BIPOLAR

ACTIVATES

INITIAL

CHECK

PCB.

PROCEDURE

FUSE

(FIG.

25).

F201

11.0

ON

BIPOLAR

U.l

(FIG.

SSE4

OUTPUT

IF

V5).

IS

Q211, Q201. Q211

IF

Q2U

AND GO TO

FUSE

IS

IT

ACTIVATED

OR

Q201

STEP

11.2.

OK,

CHECK

SHOULD

IN

IS

IS

BAD,

HV

BE

100V

BIPOLAR.

AN

FET

REPLACE

PIN

CHECK

DEVICE.

7, H

WHEN

THEM

11.2

Q201, Q202.

LEAVE

U201

VDC

SHOULD

IS

ACTIVATED

66

IF

FUSE

PIN

WHEN

BE

14

FUSE

OUT.

SSE4

9V

REPLACE

(FIG.

PULSED

IN

IS

BLOWN,

OBSERVE

25).

IS

NOT

AT

BIPOLAR.

CHECK

IF

NECESSARY.

WAVEFORM

IT

SHOULD

ACTIVATED.

30KHZ

WHEN

Q211,

BE

SSE4

AT

4

IT

11.11

PIN

IT

VATED.

IF

HV

IS

NOT

14

ON CLOCK/CONTROL PCB

SHOULD

ALSO

BE

HI

CHECK

WHEN

AT

U621.

100V,

BIPOLAR

CHECK DSE

(FIG.

29).

IS

ACTI

11.12

CHECK

25).

BIPOLAR

BIPOLAR

F201

SHOULD

lOOmS

ALSO

U.

OK,

BIPOLAR.

RESET

BOTH

AND

CHECK

21

REPLACE

IF

HV

IS

IS

OBSERVE

START

AFTER

PIN

IF

WAVEFORM

IF

IS

OK,

PIN

SIGNALS

NOT

ACTIVATED.

LOW

BIPOLAR

W

F201.

F201

Q211, Q201, Q202.

THRU

Q210

IF

Q211

CONTINUES TO

TO

FAIL,

GO TO

BLOW,

11.1.

Q211,

P

AND

KEY

Q201

PIN

SHOULD BE

ACTIVATED,

AFB

AND

GO

FOR6mHz

PIN

IS

LOW

REMOVE

16.

HIGH

ACTIVATED.

CLOCK.

AT U201 PIN

REACTIVATE SSE4 IN

FAILS

ALSO

WAS

AGAIN,

CHECK

BAD.

OR PARTS CONTINUE

ARE

OK,

T

(FIG.

HI

WHEN

WHEN

FUSE

AFB

WITHIN

14

RECHECK

Q207

IF

FUSE

IS

11.121

IF

RESET. KEY, CLOCK OR AFB

ARE INCORRECT, PROBLEM

BIPOLAR CONTROLLER

BIPOLAR

11.122

PCB

kHz

kHz

MODE. CHECK

SQUARE WAVE

CONTROLLER

IF

ALL

SIGNALS

ARE

OK,

CHECK

WAVEFORM, CHECK

ONLY

WHEN

ACTIVATED

Q211

WHEN

ACTIVATED

PCB.

U204

U203

GATE

IS

PCB.

FROM

PIN

PIN

PROBABLY

CONTROLLER

11

3 FOR

IN

FOR 8

IN

BIPOLAR.

IN

REPLACE

FOR

750
750

BIPOLAR

VOLTS

67

ALL

WAVEFORMS

HORIZONTAL
VERTICAL

SEEN

ACROSS A

SENSITIVITY-lOus/cm

SENSITIVITY-500V/cm

300

OHM

LOAD

CUT @

300

SPRAY COAG @

116

W

W

FIGURE

MONOPOLAR OUTPUT WAVEFORMS

12

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200

200

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12

CONTINUED

69

KEY MBP

Q211

GATE

2V/div
luS/div

SETTING
300 OHM LOAD

KEY

STD

- 40W

MBP

Q211 DRAIN

50V/div
luS/div

SETTING -40W

100 OHM LOAD

BIPOLAR

FIGURE

OUTPUT

70

13

WAVEFORMS

KEY

STD

MBP

RF OUTPUT
50V/div

luS/div

SETTING - 40W

100 OHM LOAD

ov

am

KEY

STD

MBP

Q203 COLLECTOR

20V/div
20uS/div
SETTING -1W

100 OHM LOAD

KEY

STD

MBP

Q201 EMITTER

20V/div

20uS/div

SETTING

100

OHM

- 1W
LOAD

FIGURE

13

CONTINUED

UNKEYED

Q213 COLLECTOR

5V/div

5uS/div

SIGNAL COLLECTOR CURRENT

OUTPUT

RED

KEY

CONTROL SETTING 58 WATTS

BOARD

WIRE

COAG

LOOP

(SEE

FIGURE

300 OHM LOAD

21)

SIGNAL

POWER

TEST

F2

(8

HV

SWITCHING

SUPPLY

CONTROLLER

POINT5(SEE

AMP)

REMOVED

FIGURE

BOARD

46)

FIGURE

TROUBLESHOOTING

72

SIGNAL

CLOCK/CONTROL BOARD

TEST

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14

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G

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601

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FIGURE

30)

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FIGURE

T/OFF

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34)

9

SSE4

BIPOLAR

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19)

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