Mindray Datascope Trio Service Manual

Service Manual

Service Manual

Trio™ is a U.S. trademark of Mindray DS USA, Inc.

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®

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is a registered trademark of Velcro Industries B.V.

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Masimo SET

is a U.S. trademark of Mindray DS USA, Inc.

®

is a U.S. registered trademark of Masimo Corp.

Copyright © Mindray DS USA, Inc., 2008. All rights reserved. Contents of this publication may not be reproduced in any

orm without permission of Mindray DS USA, Inc.

0070-10-0591-01 Trio™ Service Manual

Tabl e o f Co nt en ts

Foreword....................................................................................................................................................... iii

Warnings, Precautions And Notes ....................................................................................................................iii

Warning........................................................................................................................................................iii

Theory of Operation ......................................................................................................... 1 - 1

Introduction.................................................................................................................................................... 1 - 1

Hardware Overview ....................................................................................................................................... 1 - 3

Power Supply Board (Lead Acid Battery) .................................................................................................... 1 - 3

Power Supply Board (Lithium Ion Battery).................................................................................................... 1 - 5

CPU Board (Main Control Board) .............................................................................................................. 1 - 6

Keypad Board......................................................................................................................................... 1 - 9

Keypad Board......................................................................................................................................... 1 - 10

Keypad Board......................................................................................................................................... 1 - 11

TR60-C Recorder ..................................................................................................................................... 1 - 12

Serial Interface Converter Board ....................................................................................................................... 1 - 14

Parameter Circuit Descriptions .......................................................................................................................... 1 - 15

ECG ...................................................................................................................................................... 1 - 15

Respiration ............................................................................................................................................. 1 - 15

NIBP ...................................................................................................................................................... 1 - 16

..................................................................................................................................................... 1 - 16

SpO

2

Temperature............................................................................................................................................ 1 - 17

IBP (optional) .......................................................................................................................................... 1 - 17

Calibration/Maintenance .................................................................................................. 2 - 1

Calibration Introduction ................................................................................................................................... 2 - 1

Warnings and Guidelines................................................................................................................................ 2 - 1

Test Equipment and Special Tools Required........................................................................................................ 2 - 1

Calibration and System Checks ........................................................................................................................ 2 - 2

Device Appearance and Installation Checks................................................................................................ 2 - 2

Maintenance Menu.................................................................................................................................. 2 - 2

Safety Tests............................................................................................................................................. 2 - 11

Testing Each Parameter.................................................................................................................................... 2 - 12

ECG and RESP........................................................................................................................................ 2 - 12

NIBP ...................................................................................................................................................... 2 - 12

..................................................................................................................................................... 2 - 13

SpO

2

TEMP ..................................................................................................................................................... 2 - 14

IBP......................................................................................................................................................... 2 - 14

Parts ................................................................................................................................ 3 - 1

Exploded Views of the Trio Monitor................................................................................................................... 3 - 1

Parts Listing .................................................................................................................................................... 3 - 12

Repair Information ........................................................................................................... 4 - 1

Introduction.................................................................................................................................................... 4 - 1

Single Temp Cable Assembly ........................................................................................................................... 4 - 10

ECG Cable Assembly...................................................................................................................................... 4 - 10

Troubleshooting .............................................................................................................................................. 4 - 11

Module-level Troubleshooting .................................................................................................................... 4 - 11

Disassembly Instructions................................................................................................................................... 4 - 14

Tools Needed ......................................................................................................................................... 4 - 14

Removal of the Front Housing.................................................................................................................... 4 - 14

Removal of Display .................................................................................................................................. 4 - 14

Removal of Thermal Printhead Recorder...................................................................................................... 4 - 14

Removal of PCB Chassis Assembly............................................................................................................. 4 - 15

Removal of Display Mounting Plate............................................................................................................ 4 - 15

Replacement of 3V Lithium Cell Battery....................................................................................................... 4 - 15

Trio™ Service Manual 0070-10-0591-01 i

Tabl e o f Co nte nt s

Removal of Power Supply Assembly........................................................................................................... 4 - 15

Removal of PCB Chassis Rear Panel Plate ................................................................................................... 4 - 15

Removal of NIBP/IBP PCB Mounting Plate .................................................................................................. 4 - 16

Removal of Handle .................................................................................................................................. 4 - 16

ECG Cable ESIS and Non ESIS ........................................................................................................................ 4 - 17

ECG Shielded Lead Wires ............................................................................................................................... 4 - 18

Trio Wall Mounts and Rolling Stand .................................................................................................................. 4 - 20

Appendix ......................................................................................................................... 5 - 1

System Alarm Prompts ..................................................................................................................................... 5 - 1

ii 0070-10-0591-01 Trio™ Service Manual

Foreword Introduction

Foreword

This service manual gives a detailed description of the Trio Portable Patient Monitor,
including, circuit descriptions, test procedures and a spare part listing. This manual is
intended as a guide for technically qualified personnel during repair, testing or calibration
procedures.

Warnings, Precautions And Notes

Please read and adhere to all warnings, precautions and notes listed here and in the
appropriate areas throughout this manual.

A WARNING is provided to alert the user to potential serious outcomes (death, injury, or
serious adverse events) to the patient or the user.

A CAUTION is provided to alert the user to use special care necessary for the safe and
effective use of the device. They may include actions to be taken to avoid effects on patients
or users that may not be potentially life threatening or result in serious injury, but about which
the user should be aware. Cautions are also provided to alert the user to adverse effects on
this device of use or misuse and the care necessary to avoid such effects.

A NOTE is provided when additional general information is applicable.

Warning

WARNING: The NIBP pneumatic test (specified in the EN 1060-1

standard) is used to determine if there are air leaks in the
NIBP airway. If the system displays the prompt that the
NIBP airway has air leaks, please contact the manufacturer
for repair.

CAUTION: To ensure continued use of the Factory Defaults when the

unit is powered off and on, save the Factory Defaults as the
User Default Configuration after reassembly.

Trio™ Service Manual 0070-10-0591-01 iii

Introduction War nin g

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iv 0070-10-0591-01 Trio™ Ser vice Manual

1.0

Display

Recorder

Keyboard

Main
control
board

Power

Network
interface
(future)

ECG/RESP/TEMP NIBP

SpO

2

IBP

Medical Staff

Patient

Theory of Operation

1.1 Introduction

The Trio portable patient monitor uses a parameter module as the basis for acquiring patient
data. The results are transmitted to the main control board to process and display the data
and waveforms. CPU board commands and status messages of modules are transmitted via
databus. The structure of the entire system is shown in the figure below.

Trio™ Service Manual 0070-10-0591-01 1 - 1

FIGURE 1-1 System Structure Diagram

Introduction Theory of Operation

As shown in the above figure, the four parameter modules execute real-time monitoring of
NIBP, SpO

, ECG/RESP/TEMP and IBP through the use of blood pressure cuffs and patient

2

cables. The patient data is transmitted to the CPU board for display. When required, data
may be printed out via the recorder.

1 - 2 0070-10-0591-01 Trio™ Service Manual

Theory of Operation Hardware Overview

Host P .C.B .

ECG/RES

P/TEMP

P. C. B .

SPO2

NIBP

Module

IBP

P.C . B.

TFT Display

83 inchs

800 X 600

4

Power Supply PCB

Key &

Alarm P

.C.B .

Recorder Modul e

Recorder P.S.

Battery

ECG

IBP

NIBP

SPO2

VGA

interface

Analog

output

Speak er

Alarm

LED

P5P

10

P13

P8

P14

P9

P6

P

17 (FOR 509C)

P11

P12

NET

Interface

P15

J2

J3

P16

J6

J5

J4

J7

J9

J8

X
1

X

2

X
3

X4

X5 X6

X7

X8

X9

X10

X11 X21

X14

X15

X16

P1

P2 (CRT)

A4(TFT_DIGTAL)

P3 (FOR 9000

VGA)

P7(BDM

)

ECG

Cable

SpO2

Sensor

Cuff

IBP Cable

Main

Power

Input

TO
X4

From J2

FAN

TEMP

TEMP
Sensor

Serial Coverter

P.C . B

J2

J

1

Serial

interface

1.2 Hardware Overview

FIGURE 1-2 Connection Diagram

1.2.1 Power Supply Board (Lead Acid Battery)

P/N 0671-00-0235

Trio power supply board specifications:

•AC input voltage:100~250 VAC

•AC input current: <1.6 A

•AC voltage frequency: 50/60 HZ

•Two-way output voltage: 5 V/12 V, normal working current is 1.5 A for 5 V, 2 A
for 12 V

•Two-way output voltage has functions of short-circuit, over-current and over-voltage
protection

•The power board has reset function

•The power board can manage the charging process of lead-acid battery
(12 V/ 2.3 AH). The charging time is 8 hours maximum.

NOTE: Power Supply Board must be connected to resistive load to

operate properly and avoid damage due to an overcurrent
condition.

Trio™ Service Manual 0070-10-0591-01 1 - 3

Hardware Overview Theory of Operation

AC

input

AC/DC

12V output

REC POWER

SOURCE

Power on/off

control circuit

5VDC-DC
converter

Voltage

test

Battery

and

Charging

Management

Circuit

FIGURE 1-3 Block diagram of Trio power supply board

Key Test Points

NO. NAME LOCATION FUNCTION

1Rectified voltageC12 Primary rectified voltage, range: 107~354 V

2RTN1 C12 negative

3Driving

waveform

4VIN C19 positive

5GND C19 negative

65B C47 positive

75 V ZD3 cathode 5 V output, voltage range is 4.75~5.25 V

812 V ZD3 cathode 12 V output, voltage range is 11.0~13.0 V

electrode

Q1.1 There is a driving waveform of about 100 KHZ

electrode

electrode

electrode

Primary ground

between Q1.1 and the negative electrode of C12

17.5 V provide input voltage for DC-DC

Secondary ground

5 V spare output, provide power for on/off circuit

1 - 4 0070-10-0591-01 Trio™ Service Manual

Theory of Operation Hardware Overview

AC

input

AC/DC

Li-ion

Battery and

Charging

Managerent

circuit

12V output

REC POWER

SOURCE

Power on/off control

circuit

5VDC-DC

BUCK

converter

Volta ge tes t

1.2.2 Power Supply Board (Lithium Ion Battery)

P/N 0671 -00-0051

Trio Power Supply board specifications:

•AC input voltage:110~240VAC+10%

•AC input current: <1.6A

•AC voltage frequency: 50/60+3HZ

•Two-way output voltage: 5V/12V, normal working current is 1.3A for 5V, 1.3A for
12V.

•Two-way output voltage has functions of short-circuit, over-current and over-voltage
protection.

•The power board has reset function.

•The power board can manage the charging process of li-ion battery (11.1V/4.4AH).
The charging time is 6.5 hours maximum.

FIGURE 1-4 Block diagram of Trio power supply board

Key Test Points

NO. NAME LOCATION FUNCTION

1Oscillator

2GND CC61 negative

3D-S waveformQ1.2 There is a waveform of about

4Driving

5Rectified

6VIN C18 positive

frequency

waveform

waveform

Pin 4 of U1 Generate a oscillating frequency about 100kHZ

electrode

Q1.1 There is a driving waveform of about 100KHZ,

D5 anode Secondary rectified voltage

electrode

Primary Ground

100KHZ,107~354V between Q1.2 and the
negative electrode of C12

15V between Q1.1 and the negative electrode of
C12

17.6V,provide input voltage for DC-DC

Trio™ Service Manual 0070-10-0591-01 1 - 5

Hardware Overview Theory of Operation

Key Test Points

NO. NAME LOCATION FUNCTION

712V C41 positive

85V C58 positive

9Feedback

voltage

electrode

electrode

R37 positive
electrode

12V output, voltage range is 11.0~13.0V

5V output, voltage range is 4.75~5.25V

There is a DC waveform of about 2.5V between
R37

1.2.3 CPU Board (Main Control Board)

P/N 0671-00-0056 or P/N 0671-00-0236

1.2.3.1 Overview

Power Supply Input Voltage: +12 V±5%; +5 V±5%

The main control board uses the Coldfire series embedded microprocessor 5206e
manufactured by Motorola Company. It also adopts 3.3 V low-voltage power supply to
reduce the power consumption. Other main components on the main control board include:
Flash, SRAM, FPGA, network controller, etc., all of which require 3.3 V power. The capacity
of the Flash is 2 MB or 4 MB*, which employs two parallel-connected 512K x 16 or 1M x
16* chips and therefore uses 32-bit character width to support CPU to operate at the highest
possible speed instead of accessing the DRAM for operation. The main control board has
also a 4 MB memory, which is made up of two parallel-connected 1M ×16-bit chips.
Because no executing program is required to be loaded, only one RTC is used. This chip uses
one 225maH dry cell as the spare power supply. In addition, one 2KB E2PROM is used to
store parameters. The main control board supports a resolution of 800 x 600 and provides
three interfaces: a LVDS interface, a 6 bit digital interface, and a VGA interface. The monitor
displays characters and waveforms, in the same color, on the screen. The support system
needs 10 serial ports, and the baud rate (4800/9600/19.2 K/38.4 K/76.8 K) can be
selected by software and interface buffer drives. The main control board adopts the network
controller AX88796 (3.3 V, 10 MHz), which has inside 16 K high-speed buffer SRAM. The
MAX5102 8-bit single-way D/A converter is used to fulfill analog output. The 5 V and 12 V
regulated voltage supplies are introduced from the power board, and therefore 3.3 V and

2.5 V working supplies are respectively generated. Among them, 2.5 V is to be used for the
internal verification of FPGA.

*Applies to P/N 0671-00-0056.

1 - 6 0070-10-0591-01 Trio™ Service Manual

Theory of Operation Hardware Overview

Flash/SRAM

Network

controller

Audio

alarm/spare
battery

DRAM

RTC/E PROM

2

Interrupt
management
circuit

I/O serial
interface

CPU

FPGA

Display
driving
circuit

FIGURE 1-5 Block Diagram of Trio CPU board

1.2.3.2 Detailed Description

3.3 V low-voltage power supply component is used. The external power is 5 V, which is
converted by the DC/DC converter into 3.3 V and 2.5 V, the latter voltage being especially
used for FPGA. The main control board is connected to external devices via corresponding
interfaces and input: the power supply connected to the interface board, the 9-way serial
port, TFT interface, analog VGA interface, network interface, analog output and a spare
serial port, etc. The BDM interface, on the board, is reserved for the purpose of software
testing and downloads.

CPU

Uses Coldfire 5206e. Clock rate is 54 MHz, working voltage is 3.3 V.

FLASH

Uses two parallel-connected 512K x 16 or 1M x 16* FLASH memories. The output terminal
PP1 of CPU is used to realize write-protection of FLASH. It is effective in low-level state.

*Applies to P/N 0671-00-0056.

DRAM

The Trio CPU main control board uses two parallel-connected 1M x 16 DRAM, which
construct 4M address space.

Trio™ Service Manual 0070-10-0591-01 1 - 7

Hardware Overview Theory of Operation

Display

The resolution is 800 x 600. Frequency is 38 MHz. It works in an appropriate SVGA mode.
VRAM adopts 16-bit structure and is divided into an alphanumeric character screen and a
waveform screen. To the left of the alphanumeric character screen is the corresponding
waveform screen. The character screen is used to display data and flashing alarming
parameters. The user can select the color of the waveform and alphanumeric characters for
each parameter.

LVDS Interface

By utilizing time-share sampling, the LVDS (Low Voltage Differential Signaling) interface
converts multi-channel CMOS/TTL signals into single channel, low-voltage, double-frequency
differential signals. LVDS interface is generally realized by a special integrated circuit. The
special LVDS chip used for display is DS90CF363A. This chip converts 18-bits of RGB data
and 3 bits of LCD timing and control data (21 bits of CMOS/TTL data) into 3 LVDS data
streams. Four differential signals including the 3 data streams and a phase-locked frequency
are transmitted to the display screen. The working frequency of DS90CF363A is 20~65
MHz.

Reset and Parameter Storage

The CPU board uses an integrated chip CAT1161, which controls both power-on reset and
parameter storage. This chip has an E2PROM with the capacity of 2K. It can be used to
modify and store various nonvolatile parameters of the host. The power-on reset and
WAT CH DO G f un ct io ns a re us ed to re al iz e r es et fu nction of the CPU board. When J1 is open
circuit, the software can also disable WATCHDOG by using the output signal PP0 of CPU in
order to realize the self test of WATCHDOG. The bus interface of this chip is I2C.

Network Controller

The network controller adopts special chip AX88796. Its working clock is 25 MHz. It also
has internal 16 K high-speed buffer SRAM. The data bus of this chip is 16-bit width.

Key Test Points

NO. NAME FUNCTION

1V33Digital supply voltage: +3.3 V

2V25FPGA supply voltage: +2.5 V

3V3 Lithium battery voltage: +3 V

4CLK CPU master clock: 54 MHz

5PCKFPGA and display clock: 38 MHz

6NCKNetwork chip clock: 25 MHz

7/RSTSystem reset signal

8/NINTNetwork chip interrupt signal

9DO Signal indicating successful FPGA configuration

1 - 8 0070-10-0591-01 Trio™ Service Manual

Theory of Operation Hardware Overview

CPU

(AT89C2051)

RAM

128 x 8

FLASH

4KX8

Watch dog

button and encoder

scan circuit

serial communication

Main control board

button

signal input

Sound

Effect

Control

speaker

Alarm indicator

control circuit

ENCODER

BUTTON

Volu me
Control

Lowpass

and

Bandpass

Filter

Power

Amplifier

LM386

1.2.4 Keypad Board

P/N 0671-00-0237

FIGURE 1-6 Keypad Block Diagram

1.2.4.1 Detailed Description

This circuit has three main parts:

1. Alarm Audio Signal Circuit: The alarm audio signal circuit is made up of components

including U3, U6, R8, R25, E6 (E1), R11, R12, R3 and R32. P3.3 is used to control the
length of the alarm sound. R8, E1 and E6 are used to generate the rise edge and the fall
edge of the sound signal. Q1 is used to make the rise edge and fall edge of the low­level alarm slower than those of medium/high-level alarm. D1 is used to generate the
heart beat and pulse tone. If P3.2 is high, the alarm square waveform of P3.5 will pass
and, as a result, control P3.2 to generate a "heart beat tone" or ‘‘rotary encoder tone’’.
R11, R12, R3, R32 and R18 together construct a variable voltage-dividing network
which, by controlling the state of RA and RB via U3, determines the sound volume level.

2. RC Bandpass Filter/Audio Amplifier: A one-stage RC bandpass filter is used to block the

low frequency component of the alarm signal (700 Hz. square wave) before it is input to
the audio amplifier, LM386. This bandpass filter is made up of R13, R28, C9, C15, RA
and the input resistance R in of LM386.

3. Alarm Indicator Control/Encoder and Key Scanning: The flashing of the alarm indicator

in red or green is controlled by the state of microchip P1.6 and P1.7. The
microprocessor scans the state of microchips P1.0~P1.2 to determine which key, or if
the encoder, is pressed. The microprocessor scans the state of microchips P1.4 and P1.5
to determine if the encoder is turned and in which direction it is turned.

Key Test Points

NO. NAME LOCATION FUNCTION

1VCC P4.4 Power input, range: 4.8~5.1V

2GND P4.5 Power supply and signal ground

3RST U1.1 CPU reset signal. At low level (<0.3V) when

4Crystal oscillatorX1.1, X.2 CPU crystal oscillator. Sine wave (1.5~3.5V)

operating normally

when operating normally

Trio™ Service Manual 0070-10-0591-01 1 - 9

Hardware Overview Theory of Operation

Watch dog

ENCODER

KEY

CPU

(AT89C51)

RAM

128 X 8

FLASH

4K X 8

Main Control

board (Host CPU Board)

Audio Process

Circuit

SPEAKER

LED

1.2.5 Keypad Board

P/N 0671-00-0058

FIGURE 1-7 Keypad block diagram

1.2.5.1 Detailed Description

This module detects key and encoder input signals, converts them into code then sends these
coded signals to the main board. The main control board (Host CPU board) in turn sends
commands back to the keyboard's control indicator and audio process circuits, which enable
or disable audio and visual alarm respectively, as required.

CPU

•Detects key and encoder input signals;

•Controls LED status;

•Controls Audio Process Circuit;

•Regularly zeroes Watchdog Timer;

•Communicates with main board.

Audio Process Circuit

Generates audio signals to drive the speaker.

Watchdog

•Upon power-up, supplies Reset signal to CPU;

•Provide functions of Watchdog Timer Output and voltage detection.

1 - 10 0070-10-0591-01 Trio™ Service Manual

Theory of Operation Hardware Overview

Watch dog

ENCODER

KEY

CPU

(PIC16F73)

RAM

192 X 8

FLASH

4K X 4

Main Control

board (Host CPU Board)

Audio Process

Circuit

SPEAKER

LED

Key Test Points

NO. NAME LOCATION FUNCTION

1VCC P4.4 Power input, range: 4.8~5.2V

2GND P4.5 Power supply and signal ground

3RST U1.10 CPU reset signal. At low level(<0.3V) when

4Crystal oscillatorX1.1,X.2 CPU crystal oscillator. Sine wave signal

operating normally

(1.5~3.5V) when operating normally

1.2.6 Keypad Board

P/N 0671-00-0064

FIGURE 1-8 Keypad block diagram

1.2.6.1 Detailed Description

This module detects keypad and encoder input signals, converts them into code and transmits
the code to the Host CPU board. The Host CPU board sends commands to the keyboard
which in turn controls the indicator and audio process circuits, activating audio and visual
alarms accordingly.

CPU

Trio™ Service Manual 0070-10-0591-01 1 - 11

The Keypad Board's CPU is responsible for the following functions:

•Detects keypad and encoder input signals

•Controls LED status

•Controls Audio Process Circuit

•Regularly zeroes Watchdog Timer

•Communicates with main board.

Hardware Overview Theory of Operation

Thermal Head

CPU

cpld 9536

Status Detec tion

Motor
driver

Signal & 5 V

DC/DC

12 V > 8 V

Audio Process Circuit

Generates audio signals to drive the speaker.

Watchdog

•Upon power-up, supply Reset signal to CPU

•Provide functions of Watchdog Timer Output and voltage detection.

Key test points

NO. NAME LOCATION FUNCTION

1.

2.

3.

4.

5V/5B J5 pin 1 Power input, range: 4.0~5.5V

GND J5 pin 2 Power supply and signal ground

RST J5 pin 3 CPU reset signal. At low level(<0.8V (during

normal operation)

Crystal oscillator X1 pin 1,X1 pin 2 CPU crystal oscillator. Sine wave signal

1.5~3.5V (during normal operation)

1.2.7 TR60-C Recorder

FIGURE 1-9 Block Diagram of TR60-C drive board

1.2.7.1 Detailed Description

Thermal Head

The thermal head, the core component in the TR60-C recorder, is the PTMBL1300A thermal
head, manufactured by the ALPS company.

1 - 12 0070-10-0591-01 Trio™ Service Manual

Theory of Operation Hardware Overview

CPU System

The CPU system is the core of the drive board. Its task is to receive the data from the host and
generate lattice messages after calculation using a specified algorithm. These messages are
then sent to the thermal head for printing. The CPU system can simultaneously collect data
from both the thermal head and the drive board and display data sent to the host.

Power Conversion

The recorder requires the system to provide two voltages: 12 V and 5 V. The 5 V is directly
driven by the logic and analog circuit of the drive board and the thermal head. Its current is
less than 150 mA. The 12 V is converted into 8 V (by the DC/DC on the board) to drive the
thermal head and the motor. The current required is determined by the printing content and
ranges from 0.5 A to 2 A.

Motor Drive

A small motor is used to control the paper movement at the thermal head. The processor on
the drive board uses two motor drives IC LB1843 V to control and drive the motor. These two
IC’s use constant current to control and drive the motor.

Status Detection

To c or re ct ly a nd s af el y co nt ro l an d dr iv e th e th er ma l he ad and t he m ot or, t he d ri ve b oa rd
must use the sensor inside the thermal head to detect the following signals: the position of the
chart paper, if the chart paper is installed and if the temperature of the thermal head has
exceeded the limit.

Key Test Points

NO. NAME LOCATION FUNCTION

112 V JP3.1 Power input, range: 10~18 V

2GND JP3.2 Power and signal ground

3 VPP U7.8 Power supply for heating thermal head and

4VCC U1.14 +5 V supply: 4.75~5.25 V

5RESETU3.10 CPU reset signal. At high level(>2.4 V) after

drive motor: 7.8 V~8.4 V

power-on

Trio™ Service Manual 0070-10-0591-01 1 - 13

Serial Interface Converter Board Theory of Operation

Host P .C.B.

P5

P10

P13

P8

P1 4

P9

P6

P1 7 ( F O R 5 0 9 C )

P11

P1 2

P1 5

P1 6

P1

P2 ( C R T )

P4(T FT_DIGTA L )

P3(FOR 900 0

VGA)

P7(BDM

)

Serial Coverter

P.C.B

J2

J1

Serial

interface

Converter Board

Tx

Rx

G

5V

Tx

Rx

G

TTL Level

RS232 Level

DB9 Socket

RS232

Converter

chip

1.3 Serial Interface Converter Board

The Serial Interface Converter Board is used to convert the TTL level (5V) to RS232 level.

1 - 14 0070-10-0591-01 Trio™ Service Manual

FIGURE 1-10 Serial Interface connection diagram

FIGURE 1-11 Block diagram of Serial Interface Converter Board

Theory of Operation Parameter Circuit Descriptions

1.4 Parameter Circuit Descriptions

1.4.1 ECG

The main functions concerning ECG are:

•Lead: 3-lead, 5-lead

•Lead Method; I, II, III, avR, avL, avF, V, CAL

•Floating Input

•Right-Leg Drive

•Lead-off Detection

The ECG circuit is responsible for processing the ECG signals of human body. The circuit
consists of following parts:

Input Circuit: The ECG electrodes are connected into the circuit through the cable.
This circuit is mainly used to protect ECG input stage and filter the signals so as to
remove the outside interference.

Buffer Amplifying Circuit: Used to convert the impedance of ECG signals, so as to
ensure that the ECG has a very high input impedance but only low output impedance.

Right-Leg Drive Circuit: The middle output point of the buffer amplifying circuit is
reversely amplified and then fed to the RL of the 5-lead ECG to maintain the human body
in a equipotential state. This method can reduce the interference and raise the common­mode rejection ratio of the circuit.

Lead-off Detection: Based on the theory that the lead-off may cause the output of the
buffer amplifying circuit to change, we can use the comparator to accurately determine
if the lead has fallen off. In this way, the level can also be converted into TTL level for the
MPU to test.

Main Amplifying Circuit: A measurement amplifier consisting of three standard
operation amplifiers.

Last Stage Processing Circuit: Used mainly to couple ECG signals, program control
of the gain amplifier, filter the waveform and move the level, amplify the signal and send
it to the analog-to-digital converter.

1.4.2 Respiration

Respiration is measured by the thoracic impedance method. When a person is breathing, his
chest moves up and down. This movement equals the impedance change between electrodes
RA and LL. The monitor converts the high-frequency signals passing through RA and LL into
amplitude-modulated high-frequency signals, which are then demodulated and amplified into
electronic signals varying with the respiration changes and then transmitted to analog-digital
converter. The RESP module is made up of a respiration circuit board and a coupling
transformer. The circuit includes stages such as: oscillation, coupling, demodulation,
preliminary amplification and high-gain amplification.

Trio™ Service Manual 0070-10-0591-01 1 - 15

Parameter Circuit Descriptions Theory of Operation

1.4.3 NIBP

The monitor measures non-invasive blood pressure using the oscillometric method. Detailed
measurement procedures follows:

1. Inflate the cuff encircled around the upper arm until the pressure in the cuff blocks the

blood flow in the artery of the upper arm.

2. Then deflate the cuff according to the requirement of the algorithm.

3. With the pressure decreasing in the cuff, the arterial blood will palpitate with the pulse,

which results in pulsation in the cuff. Through the pressure sensor, connected to the
bladder of the cuff, a pulsation signal synchronous with the patient's pulse will be
generated.

4. After being filtered by a high-pass filter (about 1 Hz), this signal becomes the pulsating

signal and is amplified. The amplified signal is then converted into a digital signal by
the A/D converter.

5. After processing this digital signal, systolic pressure, diastolic pressure and mean

pressure can be obtained. To avoid measurement errors, choose appropriate cuffs for
patient size. The NIBP module also has an overpressure protection circuit to prevent the
cuff from being inflated to a very high pressure.

The main operating modes of NIBP are:

A. Adult/Pediatric

B. Manual Measurement

C. Interval Measurement

1.4.4 SpO

SpO2 Plethysmograph measurement is employed to determine the oxygen saturation of
hemoglobin in the arterial blood. If, for example, 97% hemoglobin molecules in the red
blood cells of the arterial blood combine with oxygen, then the blood has a SpO
saturation of 97%. The SpO
shows the percentage of hemoglobin molecules which have combined with oxygen
molecules to form oxyhemoglobin. The SpO
signal and a plethysmograph. Arterial oxygen saturation is measured by a method called
pulse oximetry. It is a continuous, non-invasive, method based on the different absorption
spectra of reduced hemoglobin and oxyhemoglobin. It measures the amount of light that is
transmitted through patient tissue (such as a finger or an ear).

Select according to the patient size, weight and age.

Manual measurement is also called single measurement. It means the monitor only
performs one measurement for each time the NIBP key is pressed.

Interval measurement means to perform one measurement within selected time cycle.
Time intervals can be set up as: 1, 2, 3, 4, 5, 10, 15 and 30 minutes, 1, 2, and 4
hours, OFF, CONT. (Continuous). If set to continuous, the monitor will perform a
measurement continuously for 5 minutes then revert to an interval setting of 5 min.
Continuous measurement is effective in monitoring changes in blood pressure.

2

oxygen

2

numeric on the monitor will read 97%. The SpO2 numeric

2

/Pleth parameter can also provide a pulse rate

2

1 - 16 0070-10-0591-01 Trio™ Service Manual

Theory of Operation Parameter Circuit Descriptions

The sensor measurement wavelengths are nominally 660 nm for the Red LED and 940 nm for
the Infrared LED. Maximum optical power output for LED is 4 mW. The amount of light
transmitted depends on many factors, most of which are constant. However, one of these
factors, arterial blood flow, varies with time because it is pulsating. By measuring the light
absorption during a pulsation, it is possible to derive the oxygen saturation of the arterial
blood. Detecting the pulsation gives a pleth waveform and pulse rate signal. The SpO
and the pleth waveform can be displayed on the main screen.

value

2

1.4.5 Temperature

The temperature circuit can amplify and filter the input signal of the temperature probe and
then output it into the A/D sampling circuit on the ECG/RESP board. This circuit consists of
sampling switching, constant-current supply, signal amplifier, filter and probe detector. The
output signal of the circuit has clamping protection to ensure that the output voltage is less
than VCC. The circuit also has a self-calibrating function.

1.4.6 IBP (optional)

Invasive Blood Pressure monitors arterial pressure, central venous pressure and pulmonary
arterial pressure.

IBP may be measured by inserting the catheter into the appropriate blood vessel. The end of
the catheter, located outside the human body, should connect directly to the pressure
transducer.

Inject normal saline into the catheter. Since the liquid can transfer pressure, the pressure
inside the blood vessel can be transferred to the outside pressure transducer. In this way we
can obtain the waveform of the dynamic pressure inside the vessel. Systolic, diastolic and
mean pressures are calculated by using an algorithm.

Trio™ Service Manual 0070-10-0591-01 1 - 17

Parameter Circuit Descriptions Theory of Operation

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1 - 18 0070-10-0591-01 Trio™ Service Manual

2.0

Calibration/Maintenance

2.1 Calibration Introduction

The following procedures are provided to verify the proper operation of the Trio Monitor. A
menu driven interface is used to execute all verification tests.

2.2 Warnings and Guidelines

In the event that the instrument cover is removed, observe these following warnings and
general guidelines:

1. Do not short component leads together.

2. Perform all steps in the exact order given.

3. Use extreme care when reaching inside the opened instrument. Do not contact exposed

metal parts which may become ‘‘live’’.

4. Read through each step in the procedure, so it is understood prior to performing the

step.

2.3 Test Equipment and Special Tools Required

•Digital or Mercury Manometer w/bulb and valve 0-300 mmHg

•Test Chamber/Dummy Cuff (P/N 0138-00-0001-03)

•DVM

•Patient Simulator

•Safety Analyzer (Dempsy Model 431 or Equivalent)

•Metric Ruler

•PC or Laptop w/Windows 98 or above, CD-ROM drive, and Ethernet card installed

Trio™ Service Manual 0070-10-0591-01 2 - 1

Calibration and System Checks Calibration/Maintenance

2.4 Calibration and System Checks

2.4.1 Device Appearance and Installation Checks

Inspect the Trio Monitor to ensure that:

•The outer housing of the device is clean and has no scratches or cracks

•When shaking the device, there are no loose components

•All keys are smooth and free for operation

•Labels are complete, sufficient and accurate

•Standard configuration is complete and all connectors are installed securely

2.4.2 Maintenance Menu

The MAINTENANCE menu provides access to all user operable calibration checks. It also
provides access to certain technical information and settings. To access the

MAINTENANCE menu, turn the unit on, rotate the Navigator™ knob to highlight the
MENU icon at the bottom of the screen and push the knob to select the SYSTEM MENU.
From the SYSTEM MENU, select MAINTENANCE.

FIGURE 2-1 Maintenance Menu DIAP units (S/N MC15000-XX and above)

2 - 2 0070-10-0591-01 Trio™ Service Manual

Calibration/Maintenance Calibration and System Checks

FIGURE 2-2 Maintenance Menu (below S/N MC15000-XX)

2.4.2.1 Calibrations

Calibrations should be performed at least once a year. Calibrations should also be
performed after any preventive maintenance or repair of the Trio Monitor.

From the MAINTENANCE menu make the following selections to perform each specific
calibration or check.

Trio™ Service Manual 0070-10-0591-01 2 - 3

Calibration and System Checks Calibration/Maintenance

IBP Pressure Cal

The purpose of this calibration is to ensure that the system gives you accurate measurements.

FIGURE 2-3 IBP Calibration

WAR N I NG: Ne v e r perfor m this procedur e while p a tient i s being

1. Connect a Pressure Transducer Interface Cable from a Pressure Transducer
(Figure 2-3) to the IBP socket on the right side panel of the Trio

2. Open 3-Way Stopcock to atmosphere.

3. Perform zeroing procedure by selecting the IBP parameter menu, then selecting IBP
ZERO tile.

4. From IBP ZERO menu select IBP ZERO tile to zero the blood pressure channel.

5. Connect a Sphygmomanometer or a digital Manometer w/bulb to the Pressure

Transducer via a T fitting.

6. Close the 3-way Stopcock.

7. Manually pump the Manometer to a static value of 100 mmHg and close valve on bulb.

8. From the MAINTENANCE menu, select IBP PRESSURE CAL.

9. From IBP PRESSURE CAL menu, select the tile adjacent to CAL VALUE and set to 100

mmHg.

monitored.

2 - 4 0070-10-0591-01 Trio™ Service Manual

Calibration/Maintenance Calibration and System Checks

FIGURE 2-4 IBP Pressure Calibration Menu

10. Select CALIBRATE. The monitor will perform the calibration and display one of the

following calibration completion messages.

MESSAGE DESCRIPTION

SUCCESSFUL CALIBRATE Indicates Blood Pressure was calibrated successfully. No

SENSOR OFF, FAIL Check that sensor is connected, then proceed with

IN DEMO, FAIL Check that the monitor is not in DEMO mode. If message

PRESSURE OVER RANGE, FAIL Check that you have selected appropriate transducer value

further action required.

calibration. If message does not clear contact Customer
Service.

does not clear contact Customer Service.

in IBP CAL, then proceed with calibration. If message does
not clear contact Customer Service.

Trio™ Service Manual 0070-10-0591-01 2 - 5

Calibration and System Checks Calibration/Maintenance

DIGITAL OR
MERCURY
MANOMETER

500 ml.

TEST CHAMBER
P/N 0138-00-0001-03

BULB

hose

TRIO MONITOR

NIBP

NIBP CAL

Connect a test chamber (P/N 0138-00-0001-03) and a calibrated digital mercury
manometer with bulb via T fitting to the NIBP quick connect fitting of the Trio Monitor
(Figure 2-5.)

1. From the MAINTENANCE menu select NIBP CAL. The selected tile will now read
STOP CAL. The user may select this tile at any time to stop the test.

2. Using the bulb, inflate the pneumatic system so that the digital mercury manometer reads

0, 50 and 200 mmHg in turn. The difference between the indicated pressure of the
digital mercury manometer and the indicated pressure in the NIBP parameter tile of the
Trio Monitor should not exceed 3 mmHg. If it exceeds 3 mmHg, please contact a
service technician.

FIGURE 2-5 Diagram of NIBP Calibration

2 - 6 0070-10-0591-01 Trio™ Service Manual

Calibration/Maintenance Calibration and System Checks

P/N 0138-00-0001-03

hose

TRIO MONITOR

NIBP

TEST

CHAMBER

NIBP Pneumatic

WARNING: The NIBP pneumatic test (specified in the EN 1060-1

standard) is used to determine if there are air leaks in the
NIBP airway. If the system displays the prompt that the
NIBP airway has air leaks, please contact the manufacturer
for repair.

1. Connect a test chamber (P/N 0138-00-0001-03) to the NIBP quick connect fitting on the
Trio Monitor (Figure 2-7).

2. From the MAINTENANCE menu, select NIBP PNEUMATIC. The NIBP pump will

begin to run and the message STOP PNEUM will appear in the selected tile. The user
may select this tile at any time to end the test.

FIGURE 2-6 Maintenance Menu

3. The prompt Pneum testing… will appear at the bottom of the NIBP parameter area

indicating that the system has started performing the pneumatic test.

4. The system will automatically inflate the pneumatic system to about 180 mmHg.

After approx. 20 seconds, the system will automatically deflate, marking the completion of
the test.

If no message appears at the bottom of the NIBP parameter area, no air leaks exist.

If the message PNEUMATIC LEAK appears at the bottom of the NIBP parameter area, the
NIBP module may have air leaks. The user should first check for loose connections.

After confirming connections, the user should repeat the pneumatic test. If the PNEUMATIC

LEAK message still appears, please contact the manufacturer for repair.

FIGURE 2-7 Diagram of NIBP Air Leakage Test

Trio™ Service Manual 0070-10-0591-01 2 - 7

Calibration and System Checks Calibration/Maintenance

ECG Cal

1. Set ECG lead to I and ECG size to x1.

2. From The MAINTENANCE menu select ECG CAL. The message CALIBRATION
MODE will appear in red at the lower left of the ECG waveform area. The highlighted
tile will now read STOP CAL. The user may select this tile at any time to end the test.

3. A 1mV peak to peak square wave will appear in the ECG waveform area. This is the

Cal Pulse.

4. Measure the amplitude of the Cal Pulse with a metric ruler. The Cal Pulse should measure
1 cm +/- 5%.

5. Set ECG size to x 2. Cal Pulse should measure 2 cm +/- 5%.

6. Set ECG size to x .25. Cal Pulse should measure 25 mm +/- 5%.

7. Set ECG size to x .5. Cal Pulse should measure 50 mm +/- 5%.

8. If any measurements are out of tolerance range, please contact the manufacturer for

repair.

2.4.2.2 Technical Information and Settings

From the MAINTENANCE menu select each tile to access specific technical information or
settings.

Vers i on: This menu will display the current version of the unit's software.

FIGURE 2-8 Version Menu*

*Applies only to host software version 02.01.00 and greater.

2 - 8 0070-10-0591-01 Trio™ Service Manual

Calibration/Maintenance Calibration and System Checks

Error Log: This menu will display any system errors which may have occurred during

normal operation of unit. SCROLL or PRINT this information by selecting
the respective tiles

FIGURE 2-9 Error Log Menu*

Factory: This menu allows the unit to be preconfigured at the factory. This menu is

enabled with an access code, 762718, and should only be accessed as
necessary by Customer Service Personnel or by trained Bio-medical
technicians after replacing defective modules as a result of unit repair.

The Factory menu allows for configuration of:

Serial Port: This menu allows the user to configure the DIAP baud rate of the serial

output port. The choices are 9600 bps or 19200 bps.

•Language (English, Spanish*, French*, German*, Italian*, Chinese*).

•Module Options (ECG, Resp, SpO

, 1ch.Temp, 2ch.Temp*, NIBP, IBP,

2

Recorder).

Selections are enabled or disabled by checking or unchecking the box
which corresponds to each item in the menu.

NOTE: IBP and 2ch. Temp should not be enabled

simultaneously.

*Not available for domestic units.

Trio™ Service Manual 0070-10-0591-01 2 - 9

Calibration and System Checks Calibration/Maintenance

FIGURE 2-10 Factory Menu

Demo: This menu allows the unit to operate in Demonstration Mode. When the unit

is operating in Demonstration mode the word DEMO will be displayed on
the screen at all times. This menu is enabled with an access code and
should be used for demonstration purposes only.

FIGURE 2-11 Demo Menu

2 - 10 0070-10-0591-01 Trio™ Service Manual

Calibration/Maintenance Calibration and System Checks

2.4.3 Safety Tests

Equipment: Safety Analyzer (Dempsey Model 431 or equivalent).

2.4.3.1 Leakage Current Tests

Case Leakage

1. Plug the line cord of the unit into the safety analyzer.

2. Connect the case ground lead of the analyzer to the equipotential lug of the monitor (at

rear of monitor).

3. Perform the tests under the following conditions:

a. Case Grounded:

Normal polarity
Polarity with open neutral

b. Case Ungrounded

Normal polarity
Polarity with open neutral
Reverse polarity

4. Verify the current reading of the test is <100µA under normal operating conditions;
<300µA under a single fault condition for 120 VAC and <500µA under a single fault
condition for 230 VAC.

Patient Leakage

1. Perform the test under the following conditions:

a. Lead to ground: Sink current patient circuit (Test V Model 431 Dempsey)

b. Patient leakage with line voltage on leads

2. Connect the ground wire from the safety analyzer to the equipotential lug of the monitor.

3. Connect the ECG cable from the analyzer to the monitor.

4. On the safety analyzer, depress the APPLY 115 VAC button and note the reading.

5. Repeat the test for normal and open ground polarity combinations.

6. Verify the current reading s o f t h e test are <50µA under a single fault condition.

Trio™ Service Manual 0070-10-0591-01 2 - 11

Testi ng E ac h Pa ram et er Calibration/Maintenance

2.5 Testing Each Parameter

Test in g ea ch p ar am et er a nn ua ll y ensures the accuracy of the Trio Monitor. The following
tests should be used for verification of operation only. The following tests should not be
considered calibration procedures.

2.5.1 ECG and RESP

2.5.1.1 Test Equipment

•Patient Simulator

2.5.1.2 Test Procedures

1. Use a 5L patient cable and lead wires to connect a calibrated patient simulator to the
ECG connector of Trio.

2. Set ECG lead to lead II and ECG size to x1.

3. Check if ECG waveforms and RESP waveforms are displayed.

4. Set up the parameters of the simulator as follows:

HR=30 (gain × 4)
RR=15

5. Check if the displayed ECG and RESP waveforms, HR and RR values are correct.

6. Change the simulator configuration:

HR=240
RR=120

7. Check if the displayed ECG and RESP waveforms, HR and RR values are consistent with
the parameters set up on the simulator.

8. Remove ECG lead. In this condition, the Trio should immediately alarm and display
ECG LEAD OFF at the top right side of the Message Area.

2.5.2 NIBP

2.5.2.1 Test Equipment

•NIBP Simulator

•NIBP Dummy Cuff/Chamber

2 - 12 0070-10-0591-01 Trio™ Service Manual

Calibration/Maintenance Testing Each Parameter

2.5.2.2 Test Procedures

1. Use polyurethane tubing to connect the Trio Monitor to a calibrated NIBP simulator and
an NIBP Dummy Cuff/Test Chamber (P/N 0138-00-0001-03) via a T fitting.

2. Select Adult mode for both the NIBP simulator and the Trio Monitor.

3. Select a group of blood pressure values within the measurement range on the NIBP

simulator, such as:

Systolic = 90
Mean = 70
Diastolic = 60

4. From the NIBP SETUP menu set INTERVAL to 1 min.

5. Press the NIBP key on the front panel keypad.

6. Allow the Trio Monitor to acquire NIBP readings for 10 minutes. Check readings for

consistency. Reading should not deviate greater than +/- 5 mmHg.

NOTE: The actual measured values of Trio Monitor may not be

consistent with those selected on the simulator. This test is
implemented only to confirm repeatability of dynamic NIBP
readings. Accuracy can only be confirmed by performing
the NIBP CAL outlined in section 2.4.2.1 of this Manual.

7. Change the NIBP simulator Systolic, Mean and Diastolic settings, and test again

2.5.3 SpO

2

2.5.3.1 Test Equipment

•SpO2 simulator

2.5.3.2 Test Procedures

1. Connect the appropriate SpO2 probe to the SpO2 connector of the Trio Monitor.

2. Connect the SpO2 probe to a calibrated SpO2 simulator.

3. From the ECG SETUP menu set SOURCE to SpO

4. Set up the parameters of SpO2 simulator as following:

=98

SpO

2

PR=70

5. Check that the SpO2 and PR values displayed on the Trio Monitor are equal to the
SpO

simulator values +/- 2%.

2

6. Change the SpO

7. Check that the displayed values on Trio are equal to the SpO

+/- 2%.

8. Remove SpO2 sensor. Trio should immediately alarm and display the message SpO2
SENSOR OFF in the message area in the top right corner of the display.

and PR values on the simulator.

2

.

2

simulator values

2

Trio™ Service Manual 0070-10-0591-01 2 - 13

Testi ng E ac h Pa ram et er Calibration/Maintenance

2.5.4 TEMP

2.5.4.1 Test Equipment

•Patient Simulator

2.5.4.2 Test Procedures

1. Connect a 400 series TEMP test cable to the TEMP connector of the Trio Monitor.

2. Connect the 400 series test cable to a calibrated Patient Simulator.

3. Set the simulator to output a temperature of 34ºC.

4. Check that the displayed TEMP value on the Trio Monitor is 34ºC +/- .1ºC.

5. Change the simulator to output a value of 40ºC.

6. Check that the displayed TEMP value on the Trio Monitor is 40ºC +/- .1ºC.

2.5.5 IBP

2.5.5.1 Test Equipment

•Patient Simulator

2.5.5.2 Test Procedures

1. Use a pressure transducer cable to connect a calibrated Patient Simulator to the Trio
Monitor.

2. Set the IBP sensitivity of the simulator to 5uv/v/mmHg, and the static IBP value to
0mmHg. Set the IBP label to ART.

3. Perform zero calibration for IBP. Select the IBP PARAMETER menu to open the IBP
SELECT menu.

4. From the IBP SELECT menu select IBP ZERO.

5. From the IBP ZERO menu select IBP ZERO.

6. After the zero calibration is successful, return to the normal screen.

7. Set the Patient simulator to an IBP value of 100 mmHg.

8. From the MAINTENANCE menu, select IBP PRESSURE CAL.

9. From the IBP PRESSURE CAL menu, set CAL PRESSURE to 100 mmHg.

10. From the IBP PRESSURE CAL menu, select CALIBRATE.

11. After the calibration is successful, return to the normal screen.

12. Set the Patient Simulator to the following IBP static values: 40 mmHg, 100 mmHg, and

200 mmHg.

13. Check that the unit displays the following values respectively: 40± 1 mmHg, 100±
2 mmHg, and 200± 4 mmHg.

14. Set the Patient Simulator to output an arterial wave with a value of 120/80.

15. Check that the unit displays the following values: Systolic 120 +/- 2%, Diastolic 80

+/- 2%.

16. Confirm that the corresponding waveform is displayed correctly.

17. Unplug the IBP sensor. IBP SENSOR OFF should be displayed in the Message Area in

the top right corner of the display.

2 - 14 0070-10-0591-01 Trio™ Service Manual

3.0

2

74

75

2

3

1

See Figure 3-2

See Figure 3-6

See Figures 3-4 and 3-5

See Figure 3-3

Parts

3.1 Exploded Views of the Trio Monitor

FIGURE 3-1 Main Sub-Assembly

Trio™ Service Manual 0070-10-0591-01 3 - 1

Exploded Views of the Trio Monitor Parts

4

10

6

7

8

9

52

6

6

11

6

6

6

5

FIGURE 3-2 Front Panel Sub-Assembly

3 - 2 0070-10-0591-01 Trio™ Service Manual

Parts Exploded Views of the Trio Monitor

18

17

14

15

16

19

20

21

22

23

24

79

12

13

FIGURE 3-3 Rear Case Sub-Assembly

Trio™ Service Manual 0070-10-0591-01 3 - 3

FIGURE 3-4 Main Chassis Sub-Assembly (SLA)

71

25

27

28

29

30

32

33

34

35

38

73

43

26

31

42

See Figures 3-9 and 3-10

See Figure 3-11

See Figures 3-7 and 3-8

3 - 4 0070-10-0591-01 Trio™ Service Manual

Exploded Views of the Trio Monitor Parts

32

28

27

25

26

33

70

34

38

69

78

73

42

43

72

71

See Figures 3-9 and 3-10

See Figure 3-11

See Figures 3-7 and 3-8

Trio™ Service Manual 0070-10-0591-01 3 - 5

FIGURE 3-5 Main Chassis Sub-Assembly (Li Ion)

Parts Exploded Views of the Trio Monitor

Exploded Views of the Trio Monitor Parts

46

45

49

47

44A

44

48

FIGURE 3-6 Display Sub-Assembly

3 - 6 0070-10-0591-01 Trio™ Service Manual

Parts Exploded Views of the Trio Monitor

39

63

62

61

41

FIGURE 3-7 Masimo SPO2 Sub-Assembly

Trio™ Service Manual 0070-10-0591-01 3 - 7

Exploded Views of the Trio Monitor Parts

39

65

41

66

67

FIGURE 3-8 Nellcor SPO2 Sub-Assembly

3 - 8 0070-10-0591-01 Trio™ Service Manual

Parts Exploded Views of the Trio Monitor

54

52

55

56

57

58

61

64

50

60

59

FIGURE 3-9 Right Side Panel Sub-Assembly (Masimo)

Trio™ Service Manual 0070-10-0591-01 3 - 9

Exploded Views of the Trio Monitor Parts

54

52

55

56

57

58

59

60

50

68

65

FIGURE 3-10 Right Side Panel Sub-Assembly (Nellcor)

3 - 10 0070-10-0591-01 Trio™ Service Manual

Parts Exploded Views of the Trio Monitor

2

37

36

80

76

81

82

83

77

84

85

86

FIGURE 3-11 Rear Panel Sub-Assembly

Trio™ Service Manual 0070-10-0591-01 3 - 11

Parts Listing Parts

3.2 Parts Listing

REF. NUMBER PART NUMBER DESCRIPTION

1 0161-00-0023 Recorder

NS 0380-00-0456 Recorder door

NS 0380-00-0454 Recorder filler panel

NS 0334-00-2665 Label, Paper Reload

2 0211-00-0143 Cross panhead screw M3 x 6

3 0211-00-0142 Screw M3 x 40

4 0366-00-0110 Knob

5 0330-00-0041-01 Keypad overlay w/freeze key

5 0330-00-0041-21 Keypad overlay w/normal

screen

6 0380-00-0455 Front bezel w/glare screen

7 0380-00-0441 Alarm light lens

8 0671-00-0240 Alarm light panel PCB

9 0671-00-0237

0671-00-0064

10 0012-00-1488 Encoder Cable

11 0311-00-0133 Encoder PCB

12 0380-00-0439

0380-00-0524

13 0354-00-0114 Fan washer

14 0226-00-0029 Dowel

15 0367-00-0082 Handle shoe (mount)

16 0367-00-0081 Handle

17 0221-00-1027 Friction washer

18 0348-00-0203 Rubber bumper

19 0213-00-4013 Cross panhead tipless

20 0012-00-1487 Speaker cable assembly

21 0386-00-0292 Speaker Bracket

22 0380-00-0440 Battery door

23 0346-00-0050 Battery door tether

24 0348-00-0202 Foot

25 0671-00-0056 CPU Board with 4 MB RAM

26 0146-00-0078 3V lithium battery

27 0104-00-0037 NIBP assembly

28 0671-00-0241 IBP PCB

29 0441-00-0178 Main chassis

30 0012-00-1494 Cable, charge assembly, lead

Keypad PCB (Freeze Key)
Keypad PCB (Normal Screen
Key) for Serial Number
MC05000-XX or Greater

Back Housing, Trio w/RCD
for Serial Number lower than
MC05000-XX
Back Housing, Trio w/Serial
Port, Serial Number
MC05000-XX or Greater

tapping screw PT4 x 14

acid

3 - 12 0070-10-0591-01 Trio™ Service Manual

Parts Parts Listing

REF. NUMBER PART NUMBER DESCRIPTION

31 0386-00-0293 Bracket, charge assembly,

lead acid

32 0671-00-0239 ECG/RESP/TEMP PCB

33 0012-00-1491 ECG/RESP/TEMP Cable

34 0012-00-1477 Power Supply cable (J5/P12)

35 0671-00-0235 Power Supply board (SLA)

36 0386-00-0333 Rear Chassis Plate

37 0119-00-0197 Fan only

38 0012-00-1478 Power Supply cable (J4/P11)

39 0012-00-1492 SpO

41 0406-00-0831 SpO

Cable, to CPU board

2

Bracket

2

42 0214-00-0249 Spring, batter lever

43 0367-00-0083 Battery lever

44 0671-00-0250 HV Inverter PCB

44A 0349-00-0342 Mylar Shield

45 0160-00-0075 8.4"TFT Display screen

46 0012-00-1485 Cable, TFT screen

47 0406-00-0823 Display screen bracket

48 0012-00-1486 Cable, HV Inverter PCB to PS

49 0012-00-1484 Cable HV Inverter PCB to

Display

50 0380-00-0443 Connector panel

52 0213-00-4014 Cross slotted panhead

tapping screw M3 x 6

54 0012-00-1468 TEMP cable

55 0386-00-0295 TEMP connector panel

56 0219-00-0007 TEMP connector nut

57 0012-00-1466 IBP cable

58 0012-00-1465 ECG cable

59 0213-00-4015 Cross slotted panhead

tapping screw M2.5 x 8

60 0103-00-0535 Connector, ‘RECTUS‘

61 0012-00-1662 Masimo flex cable

62 0671-00-0243 MS-7 SpO

(below S/N 21963-I8)

0671-00-0271 MS-7 SpO

(S/N 21963-I8 and above)

bd., Masimo

2

bd., Masimo

2

63 0671-00-0246 MS-7 isolated power bd.,

Masimo

64 0380-00-0442 Cable shroud, Masimo

65 0012-00-1661 Nellcor SpO

66 0671-00-0066 Nell-3 SpO

connector., Trio

2

bd., Nellcor

2

67 0671-00-0247 Isolated power bd., Nellcor

68 0380-00-0444 Cable shroud, Nellcor

Trio™ Service Manual 0070-10-0591-01 3 - 13

Parts Listing Parts

REF. NUMBER PART NUMBER DESCRIPTION

69 0671-00-0051 Power Supply PCB, Lithium

Ion battery option

70 0386-00-0303 Charge Assembly, Lithium Ion

battery option

71 0436-00-0217 Recorder mounting plate

72 0441-00-0180 Main chassis, Lithium Ion

battery option

73 0380-00-0483 Base, battery latch

74 0211-00-1038 Screw, M4x10, Phillips, Pan

Head

75 0211-24-0306 Screw, M3x6 Phillips, Flat

Head

76 0012-00-1496 Cable, CPU board to Ethernet

77 0012-00-1497 Cable, CPU board to Analog

Out

78 0221-00-0142 Adjustment washer, Lithium

Ion battery option

79 0334-00-2634-03 Label, Rear info

80 0220-00-0098 Nut w/captive lock washer,

M3

81 0671-00-0069 Ethernet port board

82 0012-00-1659 Cable Assembly, converter

board to CPU board

83 0671-00-0068 Converter board, Serial Port

84 0136-00-0470 BNC socket, Analog Out

85 0012-00-1658 Cable assembly, Serial Port

86 0217-00-0038 Stud screw, Serial Port

See FIGURE 4-1 0012-00-1489 Cable, alarm to keyboard

See FIGURE 4-1 0012-00-1490 Cable, Recorder to PS board

See FIGURE 4-1 0012-00-1493 Cable, Recorder to CPU

board

See FIGURE 4-1 0012-00-1495 Cable, CPU board to VGA

See FIGURE 4-1 0012-00-1499 Cable, CPU board to NIBP

Module

See FIGURE 4-1 0012-00-1500 Cable, CPU board to

Keyboard

N/S 0334-00-2627-001 Parameter Connector panel

overlay w/Masimo IBP

N/S 0334-00-2627-004 Parameter Connector panel

overlay w/Masimo SPO

2

N/S 0334-00-2627-009 Parameter Connector panel

overlay w/Nellcor IBP

N/S 0334-00-2627-012 Parameter Connector panel

overlay w/Nellcor SPO

2

3 - 14 0070-10-0591-01 Trio™ Service Manual

4.0

Repair Information

4.1 Introduction

This chapter of the Service Manual provides the necessary technical information to perform
repairs to the instrument. The most important prerequisites for effective troubleshooting are a
thorough understanding of the instrument functions as well as an understanding of the theory
of operation.

Trio™ Service Monitor 0070-10-0591-01 4 - 1

Introduction Repair Information

This page intentionally left blank.

4 - 2 0070-10-0591-01 Trio™ Service Monitor

Repair Information Introduction

CPU BOARD 0671-00-0236 or 0671-00-0056

TFT LCD DISPLAY 0160-00-0075

KEYPAD

0671-00-0237 or 0671-00-00641

2

3

POW ER INPUT

250V /5 A

1

12V

GN D

5V

AC 2

AC 1

GN D

BCON

PC O

N

SD A

SC L

KT X D
GN D
5V

12V

GN D

12V

GN D

5V

KR X D

PL ED

GN D

BCON

PCO N

SD A

SCL

PL ED

GN D

GN D

KR X

D
GN D
5V
GN D
12V

KT X

D

12V

12V

GN D

GN D

12V

NRx D

NT x D

12V

ETx D
ERx D
GN D
12V

RRx D

RTx D

GN D

RRx D

RTx D

GN D

GN D

12V

NRx D

NT x D

Pum p

ETx D
ERx D
GN D
12V

DC /D C

SH

V -IN

L L-IN

L A-IN

RA -IN

RL

ECG CABLE ASS'Y 0012-00 1465

SH

V -IN

L L-IN

L A-IN

RA -IN

RL

AG 1

T2

AG 1

T1

SINGLE TEMP CABLE ASS'Y

AG 1

T2

AG 1

T1

1

2

FA N 0119-00-0197

GN D

18V

3.96x 3

GN D

0-

2-

GN D

CK +

VCC

GN D

GN D

2+

GN D

0+

1­1+

VCC

CK -

/T E

5V

GN D

GN D

CL K

NC

DCL

K

GN D

/B K

NC

PP5

PP7

DS O

GN D

PP4

PP6

/R ST

VCC

GN D

DS I

FG ND

BV-

BV+

MR ST

MR ST

PO N
PL ED

PO N
PL ED

2.0x 8

+18V

GN D

2.54x 4

2.0x 2

GN D
SCO N

GN D
SCO N

1

1

1

1

11

1

1

1

1

1

1

1

1

1

2.0x 4

ST xD
SR xD
GN D
12V

DC /D C

1

2.0x 4

ST xD
SRxD
GN D
12V

1

1

IR

RED

I+

I-

IBP CABLE ASS'Y. 0012-00-1466

B1 +
B1 ­AG
+5 V

B1 +
B1 ­Vs s
+5 V

5V

5V

5V

GN D

+18V

1

PB

1

Vb ak

Vb ak

GN D

0-

2-

GN D

CK +

VCC

GN D

GN D

2+

GN D

0+

1­1+

VCC

CK -

1

BA TT

ERY

BD.

BV-

BV+
PB

2.0x 8

2.54x 6

2.0x 6

2.54x 6

2.0x 6

2.54x 4

2.0x 3

2.54x 8 2.54x 8

2.0x2

2.54x 2

2.0x 2

2.0x 5

2.0x 4

2.0x 4 2.54x 4

2.0x 10x2

1.25x 15

2.54x 6

PE

Por t

1

GN D
GN D

NC
NC

GN D

12V
GN D
5V
BRG

12V
GN D
5V
BRG
NC

1

1

GN D

A

B

S2

GA B

GN D

VA B

ENC OD ER

A

B

S2

GA B

GN D

VA B

2.0x 6

2.0x6

11

1

1

NETWORK

AG ND

RXD-

RXD+

TXD-

TXD+

2.0x5

AG ND

RXD-

RXD+

TXD-

TXD+

1

0311-00-0133

HV+
HV-

HV-

HV+

0012-00-1488

0012-00-1484

0012-00-1468

0012-00-1491

0012-00-1485

0012-00-1500

0012-00-1486

0012-00-1494

(LEAD ACID)

0012-00-1478

0012-00-1477

0012-00-1493

0012-00-1499

0012-00-1481

0012-00-1490

ST xD
SR xD

GN D

12V

ST xD
SRxD

GN D

12V

DC /DC

NC

NC

OG

ND

NC

OG

ND

RXA

0

11

2.0x 4

1

2.0x 6

2.0x 4

NC

OG

ND

+5 V

TX A 0

NC

NC

OG ND

NC

OG ND

RXA 0

NC

D ET-

D ET+

NC

0671-00-0252

GN D

LE D +

D ET+

D ET-

LE D -

GN D

0012-00-1662

GN D

LE D +

D ET+

D ET-

LE D -

GN D

MS7 SPO2 PCB

MASIMO

MASIMO FLEX CABLE

0671-00-0243

MASIMO MS7 PLUG CONN BD.

0012-00-1492

SPEAKER ASS'Y (w/cable) 0012-00-1487

BACK LIGHT HV INVERTER

0671-00-0250

ECG/RESP/TEMP/MODULE 0671-00-0239

POWER SUPPLY BOARD 0671-00-0235

RECORDER 0161-00-0023

BACK LIGHT HV INVERTER

0671-00-0250

NET INTERFACE 0012-00-1496

NIBP MODULE 0104-00-0037

IBP MODULE 0671-00-0241

MASIMO
MS7 SPO2 ISOLATION POWER BOARD 0671-00-0246

FIGURE 4-1 Trio Signal Connection Diagram (Masimo SET®)

Trio™ Service Manual 0070-10-0591-01 4 - 3

Introduction Repair Information

POW

ER

SUPPLY BOARD

0671-00-0235

NIBP MODULE0104-00-0037

ECG/R

ESP/TEMP

MODUL

E

0671-00-0239

TFT LCD DISPLAY

0160-00-0075

KE

YPA

D

0671-00-0237 or
0671-00-0064

RECORDER MODULE

0161-00-0023

1

2

3

POWER INPUT

250V/5A

1

12V

GND

5V

AC2

AC1

GND

BCON

PCO

N

SDA

SCL

KTX D
GND
5V

12V

GND

12V

GND

5V

KRX D

PLED

GND

BCON

PCON

SDA

SCL

PLED

GND

GND

KRX

D
GND
5V
GND
12V

KTX

D

12V

12V

GND

GND

12V

NRxD

NTxD

12V

ETxDERx

D

GND

12V

RRxD

RTxD

GND

RRxD

RTxD

GND

GND

12V

NRxD

NTx D

Pump

ETxD
ERxD
GND
12V

DC/DC

SHV-INLL

-INLA

-INRA

-IN

RL

EC

G CABLE ASS'Y 0012-00 1465

SHV-INLL

-INLA

-INRA

-INRLAG1T2

AG1T1

DUAL TEMP CABLE ASS'Y

SINGLE TEMP CABLE ASS'Y

AG1T2

AG1T1

1

2

FAN 011 9-00 -0197

GND

18V

3.96x3

GND

0-

2-

GND

CK+

VCC

GND

GND

2+

GND

0+

1­1+

VCC

CK-

/TE

5V

GND

GND

CLK

NC

DCL

K

GND

/BK

NC

PP5

PP7

DSO

GND

PP4

PP6

/RST

VCC

GND

DSI

FGND

BV-

BV+

MRST

MRST

PON
PLED

PON
PLED

2.0x8

+18V

GND

2.54x4

2.0x2

GND
SCON

SPE

AKER ASS'Y (w/cable) 0012-00-1487

GN D
SCO N

1

1

1

1

11

1

1

1

1

1

1

1

1

1

2.0x4

IBP MODULE

(OPT.)

0671-00-0241

STxD
SRxD
GND
12V

DC/DC

1

2.0x4

STxD
SRxD
GND
12V

1

1

IR

RED

I+

I-

IBP CABLE ASS'Y. 0012-00-1466
(OPT.)

B1+
B1­AG
+5V

B1+
B1­Vss
+5V

5V

5V

5V

GND

+18V

1

PB

1

Vbak

Vbak

GND

0-

2-

GND

CK+

VCC

GND

GND

2+

GND

0+

1­1+

VCC

CK-

1

BA TT

ERY

B D .

BV-

BV+
PB

2.0x8

2.54x6

2.0x6

2.54x6

2.0x6

2.54x4

2.0x3

2.54x8 2.54x8

2.0x2

2.54x2

2.0x2

2.0x5

2.

0x4

2.0x4 2.5 4x4

2.0x10x2

1.25x15

2.54x6

PE

Port

1

GND
GND

NC
NC

GND

12V
GND
5V
BRG

BACK LI GHT

HV INV ERTER

0671-00-0250

12V
GND

5V

BRG

NC

1

1

GND

A

B

S2

GAB

GND

VA B

ENCODER

A

B

S2

GAB

GND

VA B

2.0x6

2.0x 6

1

1

1

1

NETWORK

RXD-

RXD+

TXD-

TXD+

2.0x5

AGND

AGND

RXD-

RXD+

TXD-

TXD+

1

0311-00-0133

BACK LI

GHT

HV INV ERTER

0671-00-0250

HV+

HV-

HV-

HV+

0012-00-1488

0012-00-1484

0012-00-1469

0012-00-1468

0012-00-1491

0012-00-1485

0012-00-1500

0012-00-1486

0012-00-1494

(LEAD ACID)

0012-00-1478

0012-00-1477

0012-00-1493

0012-00-1499

0012-00-1481

0012-00-1490

NET INTERFACE 0012-00-1496

REDGR

EEN

COM

REDGR

EEN

GND

1

2.0x3

1

ALARM LED PC BD. 0671-00-0240

GND

NC

AOUT

1

2.54x3

1
2

ANALOG OUTPUT

(BNC)

0012-00-1497

CPU PC BD.

NELLCOR ISOLATION POWER BD.

0671-00-0247

STxD
SRxD

GND

12V

STxD
SRxD
GND

12V

DC/DC

NELLCOR
SPO PCB

0671-00-0242

or

0671-00-0066

2

NC

OGND

+12V

OGND

TX A0

123456789101112131415

VGA OUTPUT

R
G
B
H
V

0012-00-1495

GND

1

NC

0012-00-1492

1

2.0x4

1

2.0x6

NC

+5VA

RXA0

OGND

NELLCOR

MP506 SpO2 CABLE ASS'Y

OGND

+5VD

OGND

OGND

0012-00-1661

0671-00-0236 or
0671-00-0056

4 - 4 0070-10-0591-01 Trio™ Service Manual

FIGURE 4-2 Trio Signal Connection Diagram (Nellcor)

Repair Information Introduction

FIGURE 4-3 CPU PCB Connector Reference

Trio™ Service Manual 0070-10-0591-01 4 - 5

Introduction Repair Information

FIGURE 4-4 Power Supply PCB (Lead Acid Battery) Connector Reference

4 - 6 0070-10-0591-01 Trio™ Service Manual

P2

BATTERY
(LI ION)

P4

POWER/P12

POWER/P11

P5

P6

P7

FAN DISPLAY

P3

REC

Repair Information Introduction

FIGURE 4-5 Power Supply Pcb (Lithium Ion Battery) Connector Reference

Trio™ Service Manual 0070-10-0591-01 4 - 7

Introduction Repair Information

This page intentionally left blank.

4 - 8 0070-10-0591-01 Trio™ Service Manual

Repair Information Introduction

1

2

3

Power Input

250V/5A

1

GND

RRxD

RTXD

1

2

Fan 0119-00-0197

1

Charge Ass'y BD. (Li ion) 0386-00-0303

NTC

VBAT

BC

PE

Backlight HV Inverter
0671-00-0250

12V
GN
5V

BRG

NC

1

5V

12V

GND

5V

AC2

AC1

GND

BCON

PCON

SDA

SCL

PLED

BC

12V

GND

17.6V

FGND

NTC

VBAT

1

1

1

1

GND

17.6V

1

BC

Vbak

P6

12V
GND

5V

BRG

1

I

NC
NC

GND

NC

VS

NC
VBAT
NC
NC

SDA
SCL

GND
PCON
12V

5B

5V

VC

17.6V

2.54x9x2

1

17 18

17.6V

1

GND

GND

GND

Power Supply Control Bd.

0012-00-1490

Power Supply Bd. (Li Ion) 0671-00-0051

To CPU PC BD. (P12)

To CPU PC BD. (P11)

To CPU PC BD. (P13)

Recorder Module 00161-00-0023

2

P1

P2

P7

P3

P5

P4

FIGURE 4-6 Power supply board (LI Ion battery) signal connection diagram

Serial Port Converter Board P/N 0671-00-0068

J1 J2

To C PU P C
BD. (P5)

RXD

TXD

11

12V

FIGURE 4-7 Serial Port Converter board signal connection diagram

TXD

RXD

GNDGND

To S er ia l Po rt

Trio™ Service Manual 0070-10-0591-01 4 - 9

Single Temp Cable Assembly Repair Information

1

3

2

1

2

180

Te mp e ra t ur e s oc k et

1 red T1
2 black AGND

4.2 Single Temp Cable Assembly

P/N 0012-00-1468

FIGURE 4-8 Single Temp Cable Assembly

4.3 ECG Cable Assembly

P/N 0012-00-1465

FIGURE 4-9 ECG Cable Assembly

4 - 10 0070-10-0591-01 Trio™ Service Manual

Repair Information Troubleshooting

4.4 Troubleshooting

During transportation, storage and use of the Trio Monitor, various factors may result in Trio
Monitor failures or affect normal operation of the device. Some of these factors include:
Unstable network voltage, changing environmental temperature, physical damage or
component aging. During failure conditions, qualified service technicians should perform
module-level service according to the failure classification listed in the table below. Module­level service is defined as analysis, replacement or test of any module or modules that may
be determined defective within the device. These modules include: Power board, main
control board, TFT assembly, cable or parameter module. The repair operation must be
conducted under specific environmental conditions by a qualified service technician with
access to special test equipment.

4.4.1 Module-level Troubleshooting

Device Failures

MESSAGE/PROBLEM REASON SOLUTION

No display after power-on Blown fuse Replace fuse

Power indicator does not light Power Supply defective Replace Power Supply

Fan does not run Defective component or PCB Replace component or PCB

No display after power-on or
black screen during operation,
however, power indicator lights
on and fan runs normally

Characters are displayed
normally, however waveforms
are displayed intermittently

An operation or measurement
function is disabled

Device responds slowly Poor performance of power

Main control board failure or
display failure

Data communication error
between main control board
and parameter module

CPU PCB or corresponding
parameter PCB damage

board

Poor performance of main
control board

Poor connection of power
supply or CPU PCB

Replace CPU PCB or Display
to confirm failure

Based on error prompt,
replace CPU PCB, ribbon
cable or parameter module to
confirm failure

Examine CPU PCB and
corresponding parameter
PCB

Check power supply and
grounding system

Replace Power Supply board

Replace CPU PCB

Replace or repair connectors

Display Failures

MESSAGE/PROBLEM REASON SOLUTION

When powering on the device,
there is no display or display
goes black during normal
operation

Trio™ Service Manual 0070-10-0591-01 4 - 11

HV inverter PCB damage Connect external VGA

display to confirm the Failure,
replace HV inverter PCB

Defective display cable Repair or replace cable

Damage of CPU PCB Replace CPU PCB

Troubleshooting Repair Information

Operation, Recording

MESSAGE/PROBLEM REASON SOLUTION

Keys or Navigator™ knob
disabled

Sound is distorted or mute Keypad failure Replace keypad

Recorder will not print Recorder has no paper or roller

Record paper skews Bad recorder paper installation

Keypad or Navigator knob is
damaged

Keypad cable is damaged Replace or repair keypad

Speaker or cable failure Replace speaker or cable

lever is not pressed down

Recorder failure Replace the recorder

Recorder cable is damaged Replace or repair the

or positioning

Replace keypad or Navigator
knob

cable

Install paper and press down
the roller lever

recorder cable

Adjust the installation of
recorder paper

Power Board Failure

MESSAGE/PROBLEM REASON SOLUTION

Fuse blows upon power-on Short-circuit in power supply or

other module

Fuse blows when all loads are
disconnected

Fuse blows after connecting a
specific PCB

Indicators of power and main
control board illuminated,
however, the fan does not run
and the keypad indicator does
not illuminate

Indicators of power and main
control board do not illuminate,
however, the fan runs normally
and the keypad indicator
illuminates

Power Supply failure Replace Power Supply

PCB may be defective Replace PCB

+12V DC power is damaged Replace the power supply

+5V DC power is damaged Replace the power supply

Replace module or PCS

Check after power-on

PCB

PCB

4 - 12 0070-10-0591-01 Trio™ Service Manual

Repair Information Troubleshooting

Parameter Failure

MESSAGE/PROBLEM REASON SOLUTION

No ECG waveform Poor connection of ECG

electrodes

No square waveform exists
during CAL self-test

RL electrode is disconnected Connect RL electrode

ECG/RESP module is damaged Replace ECG/RESP module

ECG waveform interference or
abnormal ECG waveform

Electrodes are connected
incorrectly

There are disconnected or
intermittent electrodes

AC power has no grounding
plug

ECG filter mode is incorrect Select appropriate filter mode

ECG/RESP module is damaged
or defective

No RESP waveform or
abnormal RESP waveform

Electrodes are connected
incorrectly

Patient is moving constantly Keep patient calm

ECG/RESP module is damaged
or defective

TEMP value is incorrect Temp sensor is poorly

connected

HR value is inaccurate ECG waveform intermittent Check ECG connections and

NIBP cuff cannot be inflated Airway is occluded or has

leakage

Blood pressure intermittently
cannot be measured

Blood pressure measurement is
inaccurate

No SpO

SpO

waveform SpO2 Sensor or SpO2 module

2

waveform interference Patient is moving Keep the patient calm

2

Cuff becomes loose or patient is
moving

Cuff size does not fit the patient Use the appropriate size cuff

NIBP module defective Replace NIBP module

is damaged

Ambient light is very intensive Dim the ambient lighting

value is inaccurate Dye has been injected into

SpO

2

patient's body

Use new electrodes to ensure
good contact

Replace ECG/RESP module

Correctly connect electrodes

Remove any electrodes that
are not used

Use grounded power cord
and outlet

Replace ECG/RESP module

Use RA-LL

(R and F)

electrode, connect correctly

Replace ECG/RESP module

Reconnect TEMP sensor

reconnect

Adjust or repair the airway

Keep the patient calm. Re­wrap the cuff correctly and
safely

Replace the sensor to confirm
the failure

Remove all dyes before
performing measurement

Trio™ Service Manual 0070-10-0591-01 4 - 13

Disassembly Instructions Repair Information

4.5 Disassembly Instructions

Before disassembling the unit, perform the following:

•Power down the unit and remove the line cord

•Remove all cable assemblies from the right side and rear of the unit

•Remove any batteries that were installed

•Perform all work on a properly grounded station

CAUTION: To ensure continued use of the Factory Defaults when the

unit is powered off and on, save the Factory Defaults as the
User Default Configuration after reassembly.

4.5.1 Tools Needed

•Phillips Screwdriver

•Slotted Screwdriver

•Awl or similar tool

4.5.2 Removal of the Front Housing

1. Remove two (2) 3 x 40 mm Phillips panhead screws at top right and left of rear housing.

2. Remove two (2) 3 x 5 mm Phillips flathead screws at front right and left of bottom

housing.

3. Carefully pull Front Housing Assembly forward and remove from rear housing.

4. Disconnect cable assemblies from connectors P3 (speaker cable assembly) and P4 (CPU

PCB to Keypad PCB cable assembly) of Keypad PCB.

4.5.3 Removal of Display

1. With Front Housing Assembly removed, place monitor face up on a flat surface.

2. Remove four (4) 2.5 x 6 mm Phillips panhead self tapping screws at corners of the 8.4"

TFT display.

3. Carefully lift display from mounting bracket.

4. Disconnect cable assembly from CN2 on the HV inverter PCB, and ribbon cable at

upper left of display.

4.5.4 Removal of Thermal Printhead Recorder

1. Open recorder door and remove paper roll, if installed.

2. Remove two (2) 3 x 6 mm Phillips panhead screws from rear of recorder paper

compartment.

3. Insert flat blade of screwdriver into tab slots at center right and center left of recorder

paper compartment.

4. Gently move tabs in toward center of paper compartment while pushing recorder out

from rear housing of unit.

4 - 14 0070-10-0591-01 Trio™ Service Manual

Repair Information Disassembly Instructions

4.5.5 Removal of PCB Chassis Assembly

1. Remove four (4) 3 x 6 mm Phillips panhead screws from rear housing.

2. Remove two (2) 4 x 10 mm Phillips panhead screws from bottom of rear housing.

3. Carefully pull entire PCB chassis assembly, along with right side parameter panel,

forward until it is completely removed from the rear housing.

4. Disconnect cable assemblies from connectors JP1 and JP3 of thermal printhead

Recorder.

4.5.6 Removal of Display Mounting Plate

1. Remove two (2) 3 x 6 mm Phillips panhead screws at left and right of HV inverter PCB.

2. Gently lift display mounting plate up from chassis assembly so that locking tabs at top of

mounting plate clear their slots.

3. Pull display mounting plate forward and away from chassis assembly.

4. Disconnect cable assemblies from P1 of CPU PCB (display cable assembly) and CN2 of

HV inverter PCB.

4.5.7 Replacement of 3V Lithium Cell Battery

1. With the display mounting plate removed, the CPU PCB is accessible. A 3volt Lithium

cell battery is installed in the battery socket at the lower center of the CPU PCB.

2. Using a small flat blade screwdriver, push the tab (located at the 7 o'clock position on

the battery holder) toward outer edge of battery socket.

3. The 3 volt lithium battery should pop out of holder. Remove and discard battery.

4. With positive (+) terminal facing up, push new 3 volt Lithium battery into battery holder

until tab locks battery in place.

4.5.8 Removal of Power Supply Assembly

1. Remove two (2) 3 x 6 mm Phillips panhead screws at front left and front center of PCB

chassis assembly.

2. Remove two (2) 3 x 6 mm Phillips panhead screws lower left side rear and lower right

side rear of PCB chassis assembly.

3. Remove cable assemblies from J2, J10, J4, J5, and J3 of Power Supply PCB.

4. Pull power supply assembly straight back from rear of PCB chassis assembly.

4.5.9 Removal of PCB Chassis Rear Panel Plate

1. Remove four (4) 3 x 6 mm Phillips panhead screws from rear panel of PCB chassis.

2. Remove rear panel plate. This will allow access to NIBP Module and optional IBP PCB.

Trio™ Service Manual 0070-10-0591-01 4 - 15

Disassembly Instructions Repair Information

4.5.10 Removal of NIBP/IBP PCB Mounting Plate

1. Remove two (2) 3 x 6 mm Phillips panhead screws at upper right side center and upper

left side center of PCB chassis assembly.

2. Remove one (1) 3 x 6 mm Phillips panhead screw at lower left of NIBP/IBP pcb

mounting plate.

3. If IBP PCB is installed, remove cable assemblies from PD1 and P2 of IBP PCB.

4. Remove cable assembly from P1 of NIBP PCB. Remove polyurethane hose from Rectus

fitting on parameter panel.

5. Lift NIBP/IBP PCB Mounting Plate up and out to remove. This will allow access to ECG/

RESP/TEMP PCB and SpO

PCB.

2

4.5.11 Removal of Handle

1. Remove two (2) 4 x 14 mm Phillips panhead self tapping screw at top inside front of

rear housing.

2. Push handle and handle shoes toward rear of rear housing until they are removed from

housing.

3. Use an awl or similar tool to push the pins through the shoes releasing the handle.

4 - 16 0070-10-0591-01 Trio™ Service Manual

Repair Information ECG Cable ESIS and Non ESIS

4.6 ECG Cable ESIS and Non ESIS

P/N 0012-00-1255-XX

-01 10’ Straight Non ESIS -05 10’ Straight ESIS

-02 20’ Straight Non ESIS -06 20’ Straight ESIS

FIGURE 4-5 ECG Cable ESIS and Non ESIS (P/N 0012-00-1255-XX)

ANSI/AAMI EC53-1995 IEC CONVENTIONAL STANDARD

LEAD COLOR LEAD COLOR

V Brown Chest (C) White

Right Arm (RA) White Right Arm (R) Red

Left Leg (LL) Red Left Leg (F) Green

Left Arm (LA) Black Left Arm (L) Ye ll ow

Right Leg (RL) Green Right Leg (N) Black

Trio™ Service Manual 0070-10-0591-01 4 - 17

ECG Shielded Lead Wires Repair Information

4.7 ECG Shielded Lead Wires

P/N 0012-00-1262-XX

-01 18" pinch 5 lead set Domestic -14 3/40" 2/60" pinch 5 lead set International

-02 24" pinch 5 lead set Domestic -07 18" pinch 3 lead set Domestic

-03 40" pinch 5 lead set Domestic -08 24" pinch 3 lead set Domestic

-04 18" pinch 5 lead set International -09 40" pinch 3 lead set Domestic

-05 24" pinch 5 lead set International -10 18" pinch 3 lead set International

-06 40" pinch 5 lead set International -11 24" pinch 3 lead set International

-13 3/40" 2/60" pinch 5 lead set Domestic -12 40" pinch 3 lead set International

FIGURE 4-6 ECG Shielded Lead Wires (P/N 0012-00-1262-XX)

4 - 18 0070-10-0591-01 Trio™ Service Manual

Repair Information ECG Shielded Lead Wires

GREEN

BLACK

RED

WHITE

BROWN

L" +/- 1.00"

GREEN

BLACK

RED

WHITE

BROWN

BLACK

YELLOW

GREEN

RED

WHITE

L" +/- 1.00"

BLACK

YELLOW

GREEN

RED

WHITE

BLACK

RED

WHITE

L" +/- 1.00"

TWO PINS
SHORTED

TWO PINS
SHORTED

KEYING BLOCKS

ARE TO BE THE SAME
COLOR AS LEAD WIRE

BLACK

RED

WHITE

YELLOW

GREEN

RED

L" +/- 1.00"

TWO PINS
SHORTED

TWO PINS
SHORTED

KEYING BLOCKS

ARE TO BE THE SAME

COLOR AS LEAD WIRE

YELLOW

GREEN

RED

LEAD

CONNECTOR

PATI EN T E ND

TERMINATION

SHIELD

P/N 0012-00-1261-XX

-01 18" snap 5 lead set Domestic -14 3/40" 2/60" snap 5 lead set International

-02 24" snap 5 lead set Domestic -07 18" snap 3 lead set Domestic

-03 40" snap 5 lead set Domestic -08 24" snap 3 lead set Domestic

-04 18" snap 5 lead set International -09 40" snap 3 lead set Domestic

-05 24" snap 5 lead set International -10 18" snap 3 lead set International

-06 40" snap 5 lead set International -11 24" snap 3 lead set International

-13 3/40" 2/60" snap 5 lead set Domestic -12 40" snap 3 lead set International

FIGURE 4-7 ECG Shielded Lead Wires (P/N 0012-00-1261-XX)

Trio™ Service Manual 0070-10-0591-01 4 - 19

Trio Wall Mounts and Rolling Stand Repair Information

Metric Panhead Screw M4X16
0211-13-0416-00

Trio Mouting Bracket Kit
0040-00-0338

4.8 Trio Wall Mounts and Rolling Stand

FIGURE 4-8 Mounting bracket kits

4 - 20 0070-10-0591-01 Trio™ Service Manual

Repair Information Trio Wall Mounts and Rolling Stand

Trio Wall Mount Kit

Trio VHM Wall Mount Kit

0040-00-0337-01

0040-00-0337-02

FIGURE 4-9 Mounting bracket kits

Trio™ Service Manual 0070-10-0591-01 4 - 21

Trio Wall Mounts and Rolling Stand Repair Information

FIGURE 4-10 Trio roll stand

Replacement Parts, Trio Rolling Stand

DESCRIPTION PART NUMBER

Trio rolling stand, value TRIOROLLSTD

Trio monitor mounting kit 0406-00-0856-01

Casters, Non locking 0401-00-0045

Casters, Locking 0401-00-0046

Utility basket 0202-00-0166

*Included in Trio Monitor Mounting Kit.

4 - 22 0070-10-0591-01 Trio™ Service Manual

5.0

Appendix

5.1 System Alarm Prompts

PROBLEM/MESSAGE REASON SOLUTION

BATTERY VOLTAGE TOO LOW When battery voltage is too

low, the monitor will
automatically shut down within
5 minutes

ECG WEAK SIGNAL The patient's ECG signal is too

weak

NO PULSE The patient's pulse signal is too

PNP The pacemaker is not paced Check the connection of the

PNC No pacemaker signal is

ECG LEAD OFF ECG lead is not connected

ECG V LEAD OFF The V lead wire of ECG is not

ECG LL LEAD OFF The LL lead wire of ECG is not

ECG LA LEAD OFF The LA lead wire of ECG is not

*XX represents all the parameter modules in the system such as ECG, NIBP, SpO

weak or non-existent

captured

correctly

connected correctly

connected correctly

connected correctly

Use AC power supply

Check if the electrodes and
lead wires are connected
correctly. Check the current
condition of the patient.

Check the connection of the
sensor. Check the current
condition of the patient.

pacemaker. Check the
connection of electrodes and
lead wires. Check the current
condition of the patient.

Check the connection of the
pacemaker. Check the
connection of electrodes and
lead wires. Check the current
condition of the patient.

Check the connection of ECG
lead wires

Check the connection of V
lead wire

Check the connection of LL
lead wire

Check the connection of LA
lead wire

, IBP module, etc.

2

Trio™ Service Manual 0070-10-0591-01 5 - 1

System Alarm Prompts Appendix

PROBLEM/MESSAGE REASON SOLUTION

ECG RA LEAD OFF The RA lead wire of ECG is not

connected correctly

ECG C LEAD OFF The C lead wire of ECG is not

connected correctly

ECG F LEAD OFF The F lead wire of ECG is not

connected correctly

ECG L LEAD OFF The L lead wire of ECG is not

connected correctly

ECG R LEAD OFF The R lead wire of ECG is not

connected correctly

SpO

SENSOR OFF SpO2 sensor is not connected

2

SpO

: INTERFERENCE Noise detected on the pulse

2

correctly

signal prevents pulse

Check the connection of RA
lead wire

Check the connection of C
lead wire

Check the connection of F
lead wire

Check the connection of L
lead wire

Check the connection of R
lead wire

Check the connection of
SpO

sensor

2

Decrease patient motion.
Check sensor.

discrimination

: PULSE SEARCH Hardware settings are being

SpO

2

adjusted in order to
discriminate a pulse waveform

Wai t seve ral secon ds for
saturation value to appear. If
it does not appear, do one of
the following:

•Change to site where
pulse is stronger if patient
is vasoconstricted

•Change or readjust
sensor if loose

: LOW PERFUSION Patient perfusion is low Check patient connection and

SpO

2

SpO

: TOO MUCH LIGHT There is too much ambient room

2

light for the sensor to function
properly

: UNRECOGNIZED

SpO

2

SENSOR

The sensor is not recognized by
the monitor

patient status

Minimize the room light
around the patient. Check
sensor.

Replace the sensor with a
recommended sensor from
Customer Service.

: COMMUNICATION

SpO

2

ERROR

The monitor and the SpO2
modules are not communicating
properly

Power the unit OFF/ON. If
problem persists, notify
hospital technician or
Customer Service.

: BOARD FAULT MasimoSET® board failed to

SpO

2

: SENSOR FAULT Defective Sensor Replace sensor

SpO

2

operate properly

TEMP SENSOR OFF TEMP sensor is not connected

correctly

IBP LEAD OFF IBP cable is not connected

correctly

ECG NOISE Excessive interference appears

on the ECG signals

Notify hospital technician or
Customer Service.

Check the connection of
TEMP sensor

Check the connection of IBP
cable

Check the connection of ECG
lead wires. Check the current
condition of the patient.

*XX ALM LMT ERR The alarm limit of XX parameter

has inadvertently deviated from

If message does not clear
contact Customer Service.

standard range

*XX represents all the parameter modules in the system such as ECG, NIBP, SpO

, IBP module, etc.

2

5 - 2 0070-10-0591-01 Trio™ Service Manual

Appendix System Alarm Prompts

PROBLEM/MESSAGE REASON SOLUTION

*XX RANGE EXCEEDED The measured value of XX

parameter has exceeded the

If message does not clear
contact Customer Service.

system measurement range

REAL CLOCK NEEDSET If the monitor displays 2000-1-

1, this system prompt reminds
the user that the current system
time is inaccurate

Reset the system time. After
setting the time, the user
should cycle power. This will
avoid any time storage
errors.

REAL CLOCK NOT EXIST The system has no cell battery

or the battery has run down

SYSTEM WD FAILURE The system has a fatal error or

SYSTEM SOFTWARE ERR

failure

SYSTEM CMOS FULL

Install or replace the cell
battery

Restart the system. If message
does not clear contact
Customer Service.

SYSTEM CMOS ERR

SYSTEM EPGA FAILURE

SYSTEM FAILURE2

SYSTEM FAILURE3

SYSTEM FAILURE4

SYSTEM FAILURE5

SYSTEM FAILURE6

SYSTEM FAILURE7

SYSTEM FAILURE8

SYSTEM FAILURE9

SYSTEM FAILURE10

SYSTEM FAILURE11

SYSTEM FAILURE12

KEYBOARD NOT AVAILABLE The keypad cannot be used Check the keys for abnormal

depression. Contact the
manufacturer for repair.

KEYBOARD COMM ERR The keypad has a failure Contact the manufacturer for

KEYBOARD ERROR

repair

KEYBOARD FAILURE

KEYBOARD ERR1

KEYBOARD ERR2

5V TOO HIGH The power supply has a failure Restart the system. If message

5V TOO LOW

POWER ERR3

does not clear contact
Customer Service.

POWER ERR4

12V TOO HIGH

12V TOO LOW

POWER ERR7

POWER ERR8

3.3V TOO HIGH

3.3V TOO LOW

*XX represents all the parameter modules in the system such as ECG, NIBP, SpO

, IBP module, etc.

2

Trio™ Service Manual 0070-10-0591-01 5 - 3

System Alarm Prompts Appendix

PROBLEM/MESSAGE REASON SOLUTION

CELL BAT TOO HIGH Cell battery is defective.

Incorrect cell battery installed

CELL BAT TOO LOW The cell battery has become

Replace the battery. If
message does not clear
contact Customer Service.

depleted. The cell battery is not
installed or the connection is
loose.

RECORDER SELF TEST ERR During the recorder self test,

there is a Recorder Module
communication failure

Execute Clear Record Task
function in the recorder setup
menu to reset communication
between the host and the
recorder. If message does not
clear contact Customer
Service.

RECORDER VLT HIGH The recorder module has

RECORDER VLT LOW

voltage failure

RECORDER HEAD HOT The continuous recording time

may be too long

Contact the manufacturer for
repair

After the recorder cools
down, use again. If the
problem still exists, contact
the manufacturer for repair.

REC HEAD IN WRONG
POSITION

The recorder roller lever is not
pressed down

Press down the recorder roller
lever

RECORDER OUT OF PAPER No paper is in the recorder Install paper into the recorder

RECORDER PAPER JAM The paper in the recorder is

jammed

RECORDER COMM ERR The communication of the

recorder is abnormal

Re-install the recorder paper
and try again

Execute Clear Record Task
from the recorder setup menu
to reset communication
between the host and the
recorder. If message does not
clear contact Customer
Service.

RECORDER PAPER W.P. The recorder paper is not

installed in the correction

Install the recorder paper in
the correct position

position

REC NOT AVAILABLE Cannot communicate with the

recorder

Execute Clear Record Task
from the recorder setup menu,
to reset communication
between the host and the
recorder. If message does not
clear contact Customer
Service.

NIBP INIT ERR NIBP initialization error Restart the system. If message

NIBP SELFTEST ERR

NIBP ILLEGALLY RESET During NIBP measurement,

illegal reset occurs

does not clear contact
Customer Service.

Check the airway of NIBP to
see if there are occlusions.
Then measure again. If the
problem persists, contact the
manufacturer for repair.

NIBP COMM ERR No NIBP communication Restart the system. If message

does not clear contact
Customer Service.

*XX represents all the parameter modules in the system such as ECG, NIBP, SpO

, IBP module, etc.

2

5 - 4 0070-10-0591-01 Trio™ Service Manual

Appendix System Alarm Prompts

PROBLEM/MESSAGE REASON SOLUTION

LOOSE CUFF The NIBP cuff is not connected

Re-connect the NIBP cuff.

correctly

AIR LEAK The NIBP cuff is not connected

correctly or there are leaks in
the airway

Check the connection of each
part or replace cuff and hose.
If message does not clear
contact Customer Service.

OVER PRESSURE NIBP is in an overpressure

condition.

Check for occlusion in cuff
and hose. Measure again. If
message does not clear
contact Customer Service.

SIGNAL SATURATED Problem occurs when

measuring NIBP. The system
cannot perform measurement,
analysis or calculation.

Check the connection of the
cuff and hose. Check
patient's condition. Measure
again, if the failure persists,
contact the manufacturer for
repair.

TIME OUT Problem occurs when

measuring NIBP. The system
cannot perform measurement,
analysis or calculation.

Check the connection of the
cuff and hose. Check
patient's condition. Measure
again, if the failure persists,
contact the manufacturer for
repair.

CUFF TYPE ERR NIBP cuff may be wrong size Check if the patient size is set

correctly. Replace existing
cuff with correct size cuff. If
the failure persists, contact
the manufacturer for repair.

PNEUMATIC LEAK NIBP airway has leaks Check the connection of cuff

and hose or replace cuff and
hose. If the failure persists,
contact the manufacturer for
repair.

MEASURE FAIL Problem occurs when

measuring NIBP. The system
cannot perform measurement,
analysis or calculation.

Check the connection of the
cuff and hose. Check
patient's condition. Measure
again, if the failure persists,
contact the manufacturer for
repair.

NIBP SYSTEM FAILURE Problem occurs when

measuring NIBP. The system
cannot perform measurement,
analysis or calculation.

Check the connection of the
cuff and hose. Check
patient's condition. Measure
again, if the failure persists,
contact the manufacturer for
repair.

*XX represents all the parameter modules in the system such as ECG, NIBP, SpO

, IBP module, etc.

2

Trio™ Service Manual 0070-10-0591-01 5 - 5

0070-10-0591-01 Revision G July 17, 2010

Mindray DS USA, Inc. • 800 MacArthur Boulevard • Mahwah, NJ 07430 • USA •
Dom. Customer Service: 1.800.288.2121 • Intl. Customer Service: +1.201.995.8000 •
Dom. Fax: [phone] • Intl. Fax: [phone] • www.mindray.com

Mindray Medical Netherlands B.V.• P.O. Box 26 • 3870 CA Hoevelaken • The Netherlands •
Tel: [phone] • Fa x: [phone]

Mindray (UK) Limited • 3 Percy Road • St. John’s Park • Huntingdon • Cambridgeshire PE29 6SZ •
United Kingdom • Tel: [phone] • Fax: [phone]

Mindray Medical France SARL • Europarc Créteil •123, Chemin des Bassins •
94035 Créteil Cedex • France • Tel: [phone] • Fax: [phone]

Mindray Medical German GmbH • Zwischen den Bächen 4 • 64625 Bensheim • Germany •
Tel: [phone] • Fa x: +4 9.62 51 .17 52 4-2 0

Mindray Medical International Ltd. • 2813 Office Tower, Convention Plaza • No 1 Harbour Road •
Wanchai • H ong Kong • Tel: [phone] • Fax: + 852 2344 8824

0002-08-8918