Ohmeda 5120 Oxygen Monitor User manual

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5120

Oxygen

Monitor

Service

Manual

BOC

Health

Care

Addendum

Service

0178-0164-000

For

Manual

Contract

to

the

Stock

(04

Number

5120

Oxygen Number

87

R)

DLA120-87-C-4281

Monitor

NOTE:

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dry

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and

Addendum

No.

0178-0166-000

(01

88)

a

Ohmeda Service

5120

Oxygen

Manual

Monitor

This

document

disclosed

Ohmeda,

Copyright

is

to

anyone,

Ohmeda

1987

The

not

to

without

Drive,

BOC

be

reproduced

the

Madison,

Group

in

express

Wisconsin,

Inc

any

manner,

authorization

53707

nor

of

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are

the

Product

contents

Service

herein

Department,

to

be

A

Important

The

information

models

of

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of

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proper

service the

with because repair

individual's

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maintenance

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5120

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4

TABLE

OF

CONTENTS

Precautions

Introduction

System

Software

JO

DESCEIPETON

1.1

General

1.2

Model

1.3

Accessories

1.4

Specifications

2.0

Theory

2.1

Power

2.2

Microcomputer:

2.3;

1€D

2.4

Backrighte

2.5

Front Panel

2.6

Sensor

2.1

D/A - A/D

2-8

Audio

2.9

Watchdog

2.1

0

MAM

ZE

1

Analog

3.0

Test

3.1

Special

3.2

Functional

3.3

Calibration

3.4

Final

(Warnings

Installation

Versions

Features

Variations

of

Operation:

Supply

Display

Input

Alarm

OULPUE

Output

and

Calibration

Tools

Test

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Circuit

2

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Switches

Circuit

Converter

and

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5.1

How

5.2

How

5.3

How

5.4

How

6.0

Parts

5120 Accessories: Monitor Control

Control

Display Display Display

Mist

of

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to

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to

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replace

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and

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the

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Page

iii

5

Precautions

A

CAUTIONS:

This

to

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Use

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damage

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charge

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anti-static

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workstation;

static

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monitor,

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strap

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Page

iv

5120

Oxygen

Monitor

INTRODUCTION

This

manual

competent

in

proper

to

restore

If

you

Operation

monitor

The

monitor

damage by

ESD,

System

The

carried

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When

internal

System,

connector.

contains

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operating

it

are not

and

used

is

contains

by

electrostatic

service

Installation

5120

Oxygen

from

it

an

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used

batteries.

the

to

meet

familiar

Maintenance

what

and

the

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place

ideal II

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stand-alone

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monitors.

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Service

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Page

v

|

Figure

|

Page

vi

1.

Ohmeda

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DESCRIPTION

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Page

1-1

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of

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put

Page

1-2

Section

1.0

1ο

1.2

Model

A

single

all

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as

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use

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Description

Page

5

1-3

1.3

Accessories

Several

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Page

1-4

Section

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3.

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Jack

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Description

Page

1-5

1.4

Specifications

NOTE:

and

Unless

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Performance

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specifications

calibrated

DISPLAY

RANGE:

DISPLAY

RESPONSE

DRIFT

MONITOR

RANGE:

otherwise

change

to

Specifications:

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RESOLUTION:

UPDATE:

TIME,

LINEARITY:

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change 20

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monitor

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reading

in

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oxygen

at

period

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is

properly

concentration

25

°C

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(77

°F)

¡RATING ‘ANGE:

TEMPERATURE

COMPENSATION

SENSOR

LIFE:

TEMPERATURE

RANGE:

#5,

+15"

12

months,

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о

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Page

1-6

Section

1.0

ALARM

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VISUAL

SYSTEM:

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Alphanumeric

out Alphanumeric

BATT Continuously

indicators

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of

OK

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selected

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or

intermittently

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yellow

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whenever

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Page

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Section

2.0 26

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Page

12.

2-12

Digital-to-Analog

Converter

Section

2.0

2.7

D/A - A/D

Converter

2

The

digital-to-analog performs described

converter

Integrated

a

current

input

a

voltage

1.138

The

reference reference

reference

output

two

in

as

which

terminals.

by

volts.

diode

comparators

sensor The

amplifier

outputs

microprocessor

The

microprocessor

to

convert

10-bit

digital

functions: section

described

Circuit

U104

is

proportional

The

amplifier

voltage

(VR102)

voltage

of

the

D/A

(U107).

from

One

and each

(U102).

uses

the

battery voltage

number.

converter

it

2.11

and

here.

is

output

U105.

(U104-15)

and

(Vref)

converter

comparator

the

other

comparator

a

"successive

(U104

generates

is

a

10-bit

to

current

The

output

is

an

adjustment

is

set

(U105-7)

comparator

are

or

the

part

CMOS

the

of

generated

to

measures

connected

the

and

its

associated

analog

of

the

analog-to-digital

D/A

converter

digital the

D/A

voltage

by

resistor

-1.138

is

volts

connected the

measures

approximation

sensor

amplifier

output

value unit

range

a

fixed

voltage

to

inputs

voltage

that

present

is

converted

is

voltage

(R138).

(section

to

from

battery

conversion

voltage

circuitry)

as

produces

at

from

two

0

3.3).

voltage

the

voltage.

on

the

routine"

to

its

to

a

©

Resistors outputs

To

minimize

powered is

turned

and

turned

Auto-Zero

The

"auto-zero

voltage

sensor

(using sensor output output,

determine

into

the

offset

R118

to

when

on

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of

voltage. U109,

and

the

inverting

help

power

the

when

off

when

the

switch

to

finally,

sensor

is

always

and

R121

eliminate

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conversion

the

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logic"

sensor

The

microprocessor A)

the

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provide

oscillations.

on

the

analog

is

a

software

amplifier

and

measures

amplifier

subtracts

voltage.

of

positive.

a

batteries

routine

to

digital

(U111)

(using

the

A

negative

the

amplifier

slight

is

routine

grounds

the

offset

hysteresis

the

in

software

and

offset

U109,

offset

comparators

effect.

that

subtracts

the

input

voltage,

switch

from

via

the

R131

to

Transistor

routine

measures

it

of

B) output

voltage

to

the

are

is

the

from

the connects

and

measures voltage

is

ensure

comparator

only

Q106

executed,

offset

the

amplifier

the

to

injected

that

Theory

of

Operation

Page

2-13

vs

do

CRION

Figure

2.8

Audio

+

È

2

È

13.

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AUDIO

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kHz.

frequency

transducer

CR101

the

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red red

yellow

the

for the

audible

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oscillator

R111

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resistor

across

inductive

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and

yellow

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watchdog

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load

on

(U103)

of

and

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R137

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load

driven is

driven

timer

the

R137

the

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power

alarm

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by

transducer

of

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are

by

0202 by

in

case

directly

supply.

consists

can

capacitors disconnecting

to

FET

Q103

transducer

located

via

9203

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of a microprocessor

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generate

version

is

set

C110

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eliminates

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on

port

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when

the D5

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tone

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by

the

and

capacitor

lower

the

output

the it

alarm

of

the

B4

of

battery

transducer

of

either

555

timer.

RC

time

C111

frequency

voltage

is

turned

silence

microprocessor.

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failure.

to

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C111

of

the

microprocessor

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(A101)

1

The

(0102

to

oscillator.

spike

off.

switch.

the

kHz

of

Q102).

open).

1

kHz.

generated

Page

2-14

Section

2.0 5

ENABLE DISPLAY

LINE

SHIFT

TO

REGISTERS

Figure

2.9

Watchdog

14.

TONE

το

AUDIO

FREQUENCY

Watchdog

Timer

To

AUDIO

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CR112-1

CR112-3 CR112-2

CR112-4

the

charges

0101

processor

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to

a

square

turned

discharge

enable

the

pulls

turns

selects

turns

timer

coupled

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associated

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on

circuit

some

wave

load

off

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lines

remote

the

error.

of

(C107)

capacitor

and

operating

capacitor

low

yellow

low

(1

audio

is

The

about

to

the

to

blank

alarms

Alarm

LED

kHz)

alarm.

used

display

to

processor,

50

Hz

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diode

(C106)

for

C106

the

through

Output

alarm audio

detect

when

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port

rectifier

to

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some

turning

reason,

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isolation

line

indicator

tone

when

B6.

about

lines

0101

low

(see

the

operating

This

circuit

5

volts.

high.

the

on

When

(see

turned

diode

section

(see

section

processor

correctly,

square

(CR108/CR113)

The

load

and

pulling

pack

section

2.8).

stops

wave

voltage

resistor

on,

0101

CR112.

2.10).

2.8).

is

the

Theory

Operation

of

Page

2-15

FROM

WATCHDOG

TIMER

ALARM

OUT

Mode

3103-3

"a

10K

uloz

PP

87

ALARM

EXT

|

Figure

2.10

When watchdog

about

static

Refer

When When pulses conditions

sent.

low.

OUTPUT

Alarm

an

1

discharge

to

no an

corresponding

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when

15.

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alarm

timer,

mA

of

Figure

alarm alarm

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pulses

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SILENCE

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16,

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prioritized

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+5

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Figure

to

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17,

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and

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is

CR119,

Figure

OUTPUT OUTPUT

only

is

the

microprocessor,

pulled

CR120,

18.

is

emits

which

the

highest

ALARM

to

be

not

necessary.

"|:

low.

high

connected

and

a

exists.

priority

OUTPUT

U108

R123

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series

or

provides

provide

4.5

Alarm

remains

to

by

volts). of

10

code

ALARM

the

ms

is logic

External

An

input

connected

alarm

The

maintain

A allowed.

Page

input

maximum

2-16

just

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as

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an

alarm

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high-to-low

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4

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the

monitor.

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switch audible

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17.

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J103-3

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18.

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GND

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condition

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Qb

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一

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Operation

Page

2-17

TO

A/D

COMPARATORS

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2.11

The

analog

with

The

microprocessor

converts

connected

switch value, buffered

at

the

is

updated

19.

Analog

the

input

to an

(U109,

the

by

monitor's

Output

output

to

the

switch

the

every

Analog

voltage

analog

switch

high

Output

consists

outputs

voltage

sample-and-hold

D).

is

opened.

input

Output

10

ms.

of a sample-and-hold

coming

When

jack

from

a

10-bit

(see

the

The

impedance amplifier

(J103).

the

section

capacitor

voltage

D/A

digital

The

analog

converter

value

2.7).

(C113)

is

across

sample-and-hold

which

This

through

charged

the

(U105)

capacitor

register

(U104).

the

voltage

the

to

the

and

available

register

(U105)

D/A

is

analog

new

is

Page

2-18

Section

2.0

au

3.0

TEST

The

oxvgen

specific

An

external

to

compensate

AND

CALIBRATION

sensor

concentration

calibration

for

is

the

an

expendable

of

control

decrease

oxygen

item

decreases

(CAL)

in

output

whose

is

provided

gradually

(21%

output

for

02

calibration).

current

with

the

for

time.

operator

a

Additionally,

must

the

The

whenever

checked

If does

be

calibrated

linearity

monitor

whenever

the

monitor

not

corrected

CAUTION:

to

damage

work

to

using.

Use

at

a

discharge

Handle

an

anti-static

as

of

contains

the

monitor

function

before

This

monitor

by

electrostatic

static

accumulated

the

specified

to

the

cannot

as

control

circuit

container

"100%

oxygen

other

is

serviced

monitor

be

calibrated

specified,

returning

contains

workstation;

static

boards

in

the

Operator's

02",

at

sensor.

controls

or

does

not

a

malfunction

the

monitor

electronic

discharge.

charges

by

for

transport.

regular

which

whose

perform

or

if it

When

wear

from

their

Manual,

intervals,

must

calibration

to

be

calibrated

to

specifications.

can

be

is

indicated

clinical

components

disassembling

a

static

you

and any

nonconductive

the

monitor

to

verify

should

calibrated

which

use.

that

are

the

control

tool

edges.

be

but

must

susceptible

monitor,

wrist

you

strap

are

Test

and

Calibration

Page

3-1

3.1

Special

Tools

Required

for

Calibration

Along

the

The

fully

test

1.

2,

| |

3.

4.

with equipment 5100

variable

oxygen

charged

and

generate

Static

workstation

Digital!

Multimeter

(DMM)

Variable

Power

Oscilloscope

standard

listed

monitor.

power

cells

control

DC

Supply

tools

in

supply

to

for

Figure

is

discharged

corresponding

3M

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Beckman

22

+/-

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0-5

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15

(or

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electronic

20

is

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to

cells)

alarms

Model

Stock

Model

megohm

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Stock

volts,

Model

MHz

Dual

equivalent)

Stock

required

simulate

which

and

8005

No.

input

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No.

0-100

No.

Trace

No.

service

to

the

indicators.

(or

equivalent)

175-2311-000

3020

impedance,

175-2273-000

ma

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Scope

175-2302-000

and

troubleshooting,

check

battery

and

oxvgen

(or

equivalent),

calibrate

output

monitor

©

(from

must

Figure

20.

Tools

and

Test

Equipment

Section

3.0

si

3.2

Functional

Checkout

Procedure

Inspect Inspect

Plug

applicable,

If

Note:

replace

repeat

1.

Set

a.

b.

c.

d.

2.

Press

Verify

and

3.

Press

Verify

4.

Press

the the

the

If

the

this

the

The red

The

that

monitor's

sensor

during

batteries

procedure.

Batt

audio

BATT

display

and

that

the

and

that

and

assembly

turn

this

Power

and

yellow

tone

OK

message

release

the

backlight

release

backlight

hold

housing

the

and

into

Modulus

cord

procedure,

with

switch

sounds

indicates

the

BATT

the

OK

the

Circuit

housing

three,

LEDs

briefly.

and

a

GOD

message

turns

(XO

turns

and

Output/Sensor

Sensor

the

System's

II

the

size

to

On

flash

backlight

value

/Batt

on.

/Batt

off

Test

damage.

for

input

monitor

C,

alkaline

and

verify

briefly.

appear

for % 02.

Test

appears

Test

(BATT

switch

switch.

switch

OK

jacks

connector.

master

indicates

the

for

about

again.

message

and

verify

for

switch

LOW

batteries

following.

about

5

seconds

appears

the

damage.

Off.

to

BATT,

and

5

seconds.

for

following.

5

sec.).

While

press

Note:

2

minutes,

If

required,

5.

a.

The

audio

b.

The

four

(BATT

c.

The

displayed

d.

The red

e.

The

display

holding

the

alarm

If

the

Display

The

Verify

messages,

Note:

to

Rev

and

Test:

first

that

For

3.0,

messages

individually

tone

messages

OK,

LOW

and

yellow backlight

the

Circuit

silence

following

monitor

enter

test

light

the

checks

each

Software

the

should

in

sounds

are

BATT,

digits

LEDs

Test

switch

tests

will

System

the

segment

in

sequence.

prior

segments

light

sequence.

briefly.

displayed

HIGH

are

is

02,

between

are

on.

switch

(MW)

are

not

automatically

Test

individual

of

the

LOW

lit.

pressed,

to

completed

Mode

digits,

02).

88

and

enter

return

again

segments

followed

102.

the

System

in

approximately

to

complete

of

DI

LI

normal

the

by

HIGH

Test

operation.

the

LCD

the

02

Mode.

tests.

display.

four

Test

Calibration

and

Page

3-3

Press

6.

the

Low

The

the

Alarm

02

Alarm

displayed

value

selected

Silence

Limit

number

switch

Switch

(along

by

the

to

Test:

with

Low

enter

the

02

alarm

the

LOW

limit

test.

message)

thumbwheel

should

switch.

match

Press

7.

Press

7a.

Rotate

and that

the

High

The

the

Rotate and

the

Input

Note: prior

both

verify

the

monitor

Alarm

02

Alarm

displayed

value

both

verify

Alarm

Offset

This to

Rev.

Low

that

Silence

Limit

number

selected

High

that

Silence

Voltage

test

3.0.

02

thumbwheel

a

matching

displays

switch

Switch

by

02

thumbwheel

a

matching

switch

is

only

(along

the

Test:

included

number

a

10

to

Test:

with

High

number

to

switches

appears

for any

enter

the

02

alarm

switches

appears

enter

in

through

switch

the

limit

through

the

on

02

on

the

test.

message)

the

test.

using

all

10

display.

setting

thumbwheel

all

10

display.

Software

digits

below

should

switch.

digits

Verify

10.

match

Press

8.

Press

Verify

Note:

Due

changing

the

Alarm

Battery

Verify

is

between

displayed

The

batteries

Fresh

(1.5

the

batteries

volts

Alarm

that

of

Voltage

that

the

to

electrical

the

Silence

the

35

and

number

series.

in

x

3

Silence

displayed

Least

switch

test:

backlight

52.

is

The

should

batteries

switch

value

noise

in

Significant

to

enter

is

on

times

10

backlight

display

x

10).

to

is

between

the

analog ground

Digit

the

and

that

combined

the

loads

approximately

exit

the

08

is

normal.

the

System

and

70.

circuit,

test.

displayed

voltage

batteries

45

Test

Mode.

value

of

for

the

testing.

three

Page

3-4

Section

3.0

Alarm

Function

Tests

©

@

9.

10.

11.

Set

the

Set the

If

required,

between

Verify

Low

O2

Adjust

verify

and

a.

The

b.

The red

a.

The

Press

is

silenced

High

02

Adjust

is

greater

Low

02

High

18

and

that

no

Alarm

the

CAL

the

oscillating

alarm

LOW

02

the

alarm

and

Alarm

the

CAL than

alarm

O2

alarm

adjust

25.

alarms

Test:

control

following.

indicator

message

silence

that

Test:

control

25

limit

the

are

so

two-tone

appears

it

so

and

verify

to

CAL

control

active.

that

sounds.

(LED)

switch

resumes

that

18.

25.

the

flashes.

on

the

and

sounding

the

so

that

displayed

display.

verify

after

displayed

following.

the

that

displayed

value

the

30

value

is

less

audio

seconds.

value

than

tone

is

18

12.

This each

a.

The

b.

The

a.

The

Press

is

the

silenced

Adjust

(calibrate

completes of

the

intermittent

yellow HIGH

alarm

02

message

alarm

and

the

CAL

control

to

room

the

functional

tests,

it is

low-tone

indicator

silence

that

air).

ready

appears

switch

it

does

so

sounds.

(LED)

on

and

not

that

checkout

the

for

calibration;

flashes.

the

verify

resume

displayed

procedure.

display.

that

sounding

the

value

If

refer

audio

after

is 21

the

to

tone

30

monitor

section

seconds.

passed

3.3.

Test

and

Calibration

a

3.3

Calibration

Do

not

Checkout

calibrate

Procedure

the

(section

monitor

unless

3.2).

it

has

passed

the

Functional

CAUTION: to

damage

work

to

using.

Use

To

at

discharge

an

prepare

If

set

Unplug

Remove

d.

Replace

Test

Refer

Es

and

Measure The

This

by

electrostatic

a

static

accumulated

Handle

anti-static

the

applicable,

it

on a static

the

Calibration

to

Figure

the

voltage

monitor

contains

control

the

circuit

container

monitor

remove

for

control

Sensor

back

Sensor

assembly.

housing.

assembly.

Procedure:

21.

voltage between

should

be

electronic components

discharge.

workstation;

static

boards

charges

for

by

transport.

calibration,

the

monitor

workstation.

TP4(+)

5.25

+/-

their

from

0.25

When wear

from

nonconductive

its

and

volts.

disassembling a

static

you

mounted

TP2(-).

control

and

that

the

any

tool

edges.

location

are

monitor,

wrist

you

susceptible

strap

are

and

Measure

The

voltage

Measure

The

voltage

If

required,

Measure

The

voltage

If

required,

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the

Measure

The

voltage

Adjust The

Note:

the

voltage

If

cartridges

the

voltage

for

example,

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the

(calibrate

the

voltage

should

the

voltage between

should

adjust

the

voltage between

should

adjust

monitor's

the

voltage

should

monitor's

between

the

monitor

that

have

(in

millivolts)

29%

monitor's

to

room

between

be

R138.

be

R139.

between

be

CAL

TP9

been

should

air).

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-1.138

+0.71

CAL

control

+0.200

control

and

cannot

read

CAL

control

TP10(+)

+/-

TP3(+)

TP7(+)

+/-

TP9(+)

TP2

be

in

is

0.25

+/-

0.004

0.03

to

+/-

0.006

to

should

adjusted

use

for a long

equal

0.290

to

and

volts.

and

volts.

and

volts.

display

and

display

to

+/-

display

TP2(-).

volts.

now

be

to

36%

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006

volts.

20%.

36%.

+0.360

(normal

time),

displayed

21%

+/-

for

verify

number,

0.006

that

volts.

Page

3-6

Section

3.0

Control

(circuit

e o o

Board

side)

oc

Ji

=

V

Ref

(-1.138

R138

—

R139

V

Bias

(+0.71

Adj

м)

V)

|

о

9

o

9 o 8

o

|

o

9

o

o o o

Aa

R137

Audio

Test

TP1.

TP2.

РЗ.

TP4.

TP5.

Frequency

Points

Audio

Ground

Ref

+5

volts

Proc

Adj

OK

Figure

Test

J103-1 Output

and

21.

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Test

TP8.

TP9.

TRIO.

Points

and

Calibration

TP6.

TP7.

=5

Test

Alarm

V

Test

Analog

volts

Bias

Points

Out

Controls

J104-8

Sensor

Page

3-7

Figure

|

Page

22.

3-8

Battery

Test

Verification

Section

3.0

42

Refer

8.

9.

10.

to

Remove

Connect

terminals

Slowly reduce

alarm

This

A

"Low

a. Ῥ.

c.

11.

Reduce Batteries"

This

The

a.

b. c.

d.

Figure

the

a

is

should

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low-tone

The

yellow

The

LOW

the

should

"Discharged

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intermittent

The

yellow

The

LOW

The

numeric

22

batteries

power of

the

activated.

occur

alarm

BATT

power alarm

occur

alarm

BATT

message

display

from

supply

monitor

power

+3.4

at

alarm

beeps

consists

three

indicator

message

supply

activated.

is

+3.0

at

Batteries"

low-tone

indicator

to

the

and

supply

+/-

is

voltage

+/-

is

blank.

the

monitor.

positive

adjust

voltage

0.15

of

times.

(LED)

displayed.

further

0.1

alarm

consists

sounds.

(LED)

displayed.

the

volts.

the

is

volts.

is

and

negative

supply

until

following.

lit.

until

of

flashing.

to

the

batterv

4.5

volts.

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following.

Battery"

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Adjustment

12.

Set the

Jumper The low

Connect Verify

If

required,

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perform

completes

the

of

the

power

J105-1

alarm

an

oscilloscope

that

the

Final

Audio

supply

to tone

the

adjust

monitor's

Test

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to

ground

should

frequency

R137.

and

Frequency

4.5

volts.

(TP2).

sound

between

of

the

calibration.

Sensor

Linearity

(1

kHz).

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and

displayed

ground.

waveform

Reassemble

Check

is

the

(section

1000

monitor

3.4).

+/-

and

50

Hz.

Test

and

Calibration

Page

3-9

3.4

Final

Test

and

Sensor

Linearity

Check

After monitor's

concentration

required

NOTE:

the

1.

Set HIGH

2.

Turn

(see

3.

Introduce and

Adjust

Remove

oe

The

21%

sensor

6.

To

(or

NOTE:

enable

monitor readings

to

verify

the

High

02

alarm.

the note

allow

the the

display

+/-

1

If

the

cartridge

to a desired

has

of

oxygen

02

monitor

below).

the the

CAL probe

must

digit.

display

the

HIGH

been

throughout

greater

the

linearity

alarm

On

and

oxygen display

Control

is

sensor

from

stabilize

is

not

linear

O2

High

calibrated,

its

measurement

than

of

limit

to

until

the

not

alarm,

O2

switch

allow

into

stabilize

the

"100%"

within

and

set

alarm

verify

99%

the

it

to

a

display 02

three

the

must

the

limit).

the range

("100%").

oxygen

to

stabilize

"100%"

(approximately

and

+/-

be

High

sensor.

"00"

to

concentration

indicates

expose

minutes

1%

replaced

O2

tolerance

accuracy

using

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disable

for

five

two

it

to

and

(see

alarm

of

a

test

99% 02.

limit

is

the

minutes.

of

minutes).

room

indicate

range note

the

oxygen

air.

the

below).

to

"30"

Before

and

minutes.

the

monitor

test. installed,

cartridge

just

If five

removed allowed disconnected

of

layer

(if

of

If in

time is

linear.

additional

and

testing

allow

sensor

In

before

the

sensor

minutes

12

hours.

that

disconnected

the

cell.

doubt,

of

successful,

repeat

the

sensor

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five

(cartridge)

for

at

least

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was

from

to

disconnect

However,

where

the

five

removed

testing.

assembly

or if

its

stabilize

(or

The

accumulates

allow

the

time

the

test.

monitor,

to

stabilize

minute

assembly

24

hours

a

new

minute

from

has

the

new

protective

for

removed

stabilization

on

and

exposed

the

monitor

and

perform

sensor

if

the

test

for

the

monitor

turn

stabilization

sensor stabilization

its

been

sensor

packaging,

as

many

from

the

can

the

for

has

immediately

cartridge

sealed

disconnected

cartridge

hours

its

packaging),

is

required

galvanic

to

oxygen)

to

stabilize

this

be

assumed

is

not

to

monitor

at

least

time

been

test.

successful,

stabilize

connected

assumes

protective

the as

cell

impeding

to be

on

five

assumes

preceding

has

been

for

has

been

monitor

the

sensor up to

to

remove

of

the

for

the

If

the

allow

(up

that

to

the

this

that

packaging

more

the

test

to

the

than

previously

must

has

a

maximum

an

sensor

output

presumed

24

hours)

be

been

oxide

Page

3-10

Section

3.0 Qu

4.0

TROUBLESHOOTING

Before normal

--

servicing

operation.

Refer

chapters

should

correctly.

--

Refer to

help

CAUTION: to

damage

work

to using. Use

4.1

Let

at a static

discharge

Handle

an

anti-static

Troubleshooting

the concentrate Theory

that

of

is

assigned

power

supply

the

to

the

Operation

of

this

function

to

this

chapter

locate

This

monitor

by

electrostatic

control

accumulated

the

symptoms

on

be

the

Operation).

common

to

to a specific

circuits

monitor,

manual

and

to

and

correct

contains

circuit

container

Procedur

your

circuit

If

those

circuit,

or in

one

and

Maintenance

to

learn

determine

and the

the

electronic

discharge.

workstation;

static

charges

boards

for

guide.

that

If controls

several

functions.

the

microprocessor

should

thoroughly

how a properly

what

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following

malfunction.

When wear

from

by

their

transport.

only

a

that

symptoms

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a

malfunction

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and

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monitor

chapters

components

disassembling a

static

you

and

nonconductive

single

function

are

present,

is

most

circuits.

understand

to

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is

not

in

this

that

are

the

control

any

tool

edges.

is

(see

locate

cannot

likely

its

doing

manual

susceptible

monitor,

wrist

you

not

section

a

circuit

be

logically

in

strap are

working,

2.0,

the

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in

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the

1.

2.

3.

disassembling

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steps

these

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the

1

replace

malfunction

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and

causes

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and

2

voltages

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the

using

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of

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the

and

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verify

listed

housing

and

of

the

are

the

schematic

monitor,

that

there.

as

minus

calibration

board

5

missing

or

following

(section

in

manual

the

shown

volt

or

locate

Figure

refer

to

for

malfunction

in

section

power procedure

cannot

the

your

as

2.1,

Power

31

the

troubleshooting

this

is

5.1.

supplies

(section

adjusted

be

specific

guide.

Supply

(section

product.

not

caused

as

detailed

cause

Circuits

6.0).

Perform

by

3.3).

specifications,

to

the

of

guide

the

any

in

of

Notes

Page

4-2

Section

4.0 4

5.0

REPAIR

PROCEDURES

This

the

common

CAUTION: to

work

to

using. Use

5.1

Refer

1.

2.

3.

section

5120

damage

at a static

discharge

an

How

Place

Remove

housing

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housing

contains

Oxygen

service

This

by

electrostatic

accumulated

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to

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to

Figure

the

in

holding

from side

Monitor.

techniques.

monitor

control

the

circuit

container

the

23.

monitor

four

place.

screws

the

procedures

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contains

discharge.

workstation;

static

boards

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face

front

to

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down

(one

housing

side

for

replacing

not

covered

electronic components

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charges

by

their

for

transport.

on

a

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in

each

steady,

until

it

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from

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comes

you

nonconductive

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gently

loose.

the be

and

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replaced

that

control

any

edges.

Workstation.

hold

rock

components

by

observing

are

susceptible

the

monitor,

wrist

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the

back

you

back

of

strap

are

To

4.

5.

6.

Replace

Lay

Align

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into

Secure

Test

= 一一

the

place.

the

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back

cutouts

pressure

housing

monitor

一

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housing

for

一

over

with equally

with

proper

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the

four

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the

monitor.

modular

to

all

corner

operation

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connectors.

four

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corner,

screws.

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一一 -一

一

to

press

section

一

1

| |

| | |

| |

the

cover

3.2).

L

Figure

Repair

č

23.

Procedures

How

to

a

Remove

the

E

Back

Housing

3

Page

=

5.2

How

to

Replace

the

Control

Board

Refer

Ee

2.

3.

To

Replace

to

Remove

board

The single

a.

Pull

until

b.

From until

c.

While Display the

NOTE:

board

Figure

the

the two

to

Control

row

up

the

Control

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assemblv.

the

24.

back

the

front

board

connectors.

on

the

circuit

front

it

clears

holding

board

knob

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housing

hex

nuts housing.

plugs

lower

of

the

both connectors,

board

for the

Save

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(refer

(split

into

To

end

board

the

monitor,

housing.

sides

until

calibration

it

for

to

lockwasher)

the

remove

of

the

clears

of

the

alternately

it

comes loose

use

section

Display the

Control

board

the

push

Control

pot

with

5.1).

which

board

(at

mounting

the

alarm

board

pull

from

is

not

the

replacement

hold

with

board,

modular

screws.

limit

in

up

on

the

part

the

two

8-pin

connectors)

switch

the

area

each

Display

of

the

circuit

Control

side

board.

circuit

of

the

of

board.

@

4.

5.

6.

7.

8.

9.

10.

Place

the

surface

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holding

position the

alarm

respective

Align the

While

board

components

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the

mating

holding

aligned

that

mounting

Replace Replace

Test

the

flat disc

facing

the

monitor

limit

cutouts.

two

connectors

together

the

screws

the

mounting

the

back

monitor

knob

out).

the

Control

switch

connectors

both

(in

sides

the

until

alarm

are

housing.

for

on

board

assembly

and

on

the

of

area

the

limit

in

hardware

proper

the

with

over

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calibration

each

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the

monitor

of

the

connectors

switch,

place.

(split

operation

shaft

the

side

display)

of

the

component

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of

the

board.

assembly

are

the

CAL

lockwasher

(refer

CAL

board

control

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press

fully

control

with

to

control

side

into

board

and the

the

mated.

knob,

section

(grooved

up,

aligning

their

Control

two

and

hex

nut).

3.2).

о

with

Page

5-2

Section

5.0

4%

|

=

|

static Control

|

Workstation

| I

I I

|

=

©

Hex

Nut

* T Split

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= =

=

ーー

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Figure

Repair

Procedures

24.

How

to

Replace

the

Control

Board

Page

5-3

na

5.3

How

to

Replace

the

Display

Board

Refer

1.

2.

3.

4.

To

Replace

5.

6.

7.

8.

to

Figure

Remove

housing.

Lift

Ensure front

Position the respective

Replace Replace Replace

Test

the

housing.

LCD

the

Display

the

that

the

display

the the the

monitor

25.

back

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four

Display

cutouts.

housing

the

lens

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and the

Display Control back

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screws

board

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board's

Board.

housing.

for

(refer

that hold

out

for

the

board

control

proper

to

of

the

LCD

into

the switches

mounting

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section

to

section

the

front

display

Display

front

screws.

(refer

5.1).

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board

housing.

is

in

housing

fit

properly

to

place

making

section

to

the

in

into

front

the

sure

3.2).

@

that

their

|

o

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Control

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|

Figure

|

| | |

25.

How

|

to

|

Replace

|

the

|

| 1 |

Display

I

Board

|

и

J

©

Page

5-4

Section

5.0

5.4

How

to

replace Battery

Terminals

O

A

Refer

Le.

Open

2.

Remove

in

3.

The

Note: terminal

replace

4.

To

a.

b.

a

d.

to

Figure

the

place

center

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(B)

these

replace

Remove

Control

Replace

screw

battery

Replace

with

front

the

(four

screws

are

is

hex

26.

cover

back

terminals

terminals,

the

board

the

power

the

plate

screws).

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also used

positive

back

two

to

affected terminal

tight

to

Control

nut).

and

(with

are

hold

further

housing

hex

nuts

the

in

the

board's

Replace

remove

now

the

to

mount

or

front

housing

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the

batteries.

label)

loose

positive

disassemblv

negative

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(split

housing.

back

that

for

terminal

the

Control

end

to

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lockwasher)

making

to

ensure

board.

mounting hardware

housing.

holds

replacement.

is

terminals,

sure

the

board,

required.

5.1).

which

that

proper

(A)

terminals

and

the

therefore,

hold

the

mounting

transfer

(split

negative

to

the

of

lockwasher

4.

5.

6.

7.

8.

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Place and

properly

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in

their

Replace

Test

proper

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each

the

monitor

operation

to

center

back

oriented

plate

front

batteries.

section

terminal

plate

making

housing

for

3.2).

over

the

(positive

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channels.

of

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lower

terminals

the

terminals

Note

4

Orientation

Label

edge

with

down).

are

of

the

properly

the

label

front

showing

seated

housing.

Figure

Repair

26.

Procedures

How

to

Replace

the

Control

Board

Page

5-5

Notes

Page

5-6

Section

5.0

6.0

PARTS

For

External

For

Accessories

For

Monitor

For

Control

For

Display

For

Display

LIST

Components

Assembly Board

Board Board

AND

,

SCHEMATICS

...

.

. . :

with

socketed

edge-connected

LCD

display

LCD

dis

play

see

see see

see

Figure Figure

Figure Figure Figure Figure

27

28

29 30 32 34

Item

pero»

Ohmeda

Description

Sensor

Assembly

(does

not

Sensor Batteries Front O-ring O-ring

include

Cartridge

(3),

Housing

(outside) (inside)

5120

en

Monitor

Item

size

C,

with

2)

alkaline

O-rings

Stock

No.

0237-2030-700

0237-2034-700

Obtain

locally

0237-2035-800

0210-0503-300 0210-0499-300

and

5120

Schematics

Figure

Parts

27.

List

Oxygen

Monitor

Page

6-1

_.

Item

&

Description

Sensor

Oz

Socket,

1. Dome

2

3.

O-Ring

Seating

Nut,

4. Nut,

5.

Chain

$.

Plug

à

O-Ring

B.

Chain

€.

d.

Ring,

e.

Coupling,

Probe 0237-2031-800

o...

Jam

Plug

&

only

split

Chain/Bead

Holder

......

:

1111111/10212-1052-200

111.

=

...

Stock

0236-0015-535

1110210-0704-300

0402-1707-535

1

0402-1531-835

No.

5

6e

22

mm

Tee

0212-0763-100

©

Manifold

©

Sensor

Cord

0237-2040-880

Cord, 6 feet

069011570819

extended

Extension

Kit

Coupler,

Modular

128-000-005

(=

Mounting

237-2032-700

1.

Knob

with

2.

Extrusion,

3.

Stud,

Clamp

4.

Disk,

Mounting..

Back

Clamp

Assembly

Stud

Assembly,

Clamp.

-1/4-20x1.431..

Duplex

0690-1950-247

Jack

Figure

Page

6-2

28.

Accessories:

Standard

and

Optional

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LIST

OF

ILLUSTRATIONS

Figure

Figure Figure Figure Figure Figure Figure Figure

Figure

Figure Figure

Figure

Figure Figure

Figure Figure Figure

Ohmeda

Standard

wi

Optional

5120

UA

Power

Microcomputer

JO

Input/Output

LCD

DO

Backlight

+

o

Front Panel

II

Sensor

125

Digital-to-Analog Audio

13.

14.

Watchdog:

so

Alarm

16.

Remote

17.

Alarm

18.

Alarm

19.

Analog

20.

Tools

21

Test

22.

Battery How

23.

How

24.

25.

How

26.

How

27.

5120

Accessories:

28. 29%

Monitor Control

30.

Control

31.

Display Display

33%

Display

34.

5120

Oxygen

Accessories

Oxygen

Supply

Monitor,

Circuit

Si

Ports.

Display

epi

еек

Switches

Input

Alarm

Output

Alarm

Output

and

Timer’

Circuit

Converter

Alarm

«2

не

Pulse

Waveforms

Interface Circuitry

Output

and

Points

to

Remove

to

Replace

to

Replace

to

Replace

Oxygen

Test

and

Test

Monitor

Assembly Board

Board

Eo

Eguipment

Calibration

Verification

the

Back

the

Standard

.....

Assembly

Schematic

Assembly

Schematic

Assembly

Monitor:

. . .

.

. .

Block

.

<

500 . . . . .

Indicators

eso

la

Code

.

ek

o в

Housing

Control Display Control

..

and

.

(for

Diagram

o

do

。

.

ODO

on

tro

Board Board Board

Optional

.

・

socketed.

5

eage-connected

à

πο.

LCD

display)

LCD.

displ

ay

|

ロビピロ

ee

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1

ららら

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ロロ

のの

ののの

のの

の

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나 da

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NH

-

UEL

NH

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IO O

Parts

List

and

Schematics

Page

6-9

/

Ohmeda 355

Invemess Englewood 303 799

Rapidfax

Telex

4947238

A

Division

Regional Eastern

Fort

Lee

One

Executive

Fort

Lee

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Midwestern

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Arlington

312 364

800 372

Pacific 5635 W Las Suite

406 Pleasanton 800 227 800 772

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4565

Winters

Atlanta

800

241

404

449

Drive

CO

8333

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of

The

Service

Region

Executive

NJ

07024

0443

Outside

6100

In

Region

Heights

7090

5867

Region

Positas

CA

2054

Outside

3517

In

Region Chapel

GA

30360

4300

Outside

7990

In

80112

6614

BOC

Drive

NJ

Heights

IL

94577

CA

GA

South

5810

Group

Offices

Park

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Rd

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Blvd

CA

Rd

GA

Inc

International Europe,

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Latin

10700 N Kendall Suite

Miami Telex

Southeast #06 5611 N Bridge Singapore Telex

Middle Elizabeth Harlow Essex England Telex

Africa

Way

CM19

817566

America,

301

FL

33176

810

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Asia

01

Eng

Cheong

0719

RS35276

East,

Nigeria

Way

CM19

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Caribbean

Dr

Road

5AB

Tower

National

Ohmeda 4507 C Mills

Atlanta

800 404

Canada

Service 172

Rexdale 416 243

Telex

Service

Place

GA

241 691

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Center

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Southwestern

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Greenview

Grand

Prairie

800

433

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Region

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TX

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TX

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TX

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12

87

0178 04 87 B 01

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©

The

BOC

Chg

0164

in

000

0102

USA

Group

Inc

Ohmeda 5120 Oxygen Monitor User manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Addendum

Precautions

INTRODUCTION

Accessories

Specifications

microcomputer

Backlight

Calibration