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GE Giraffe OmniBed Carestation CS1 Service Manual

GE Giraffe OmniBed Carestation CS1
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C-1
Appendix C: RS-232 Serial Data
Note: In the event of a power failure, all serial communication will cease until power is restored.
C.1 RS-232 Connector
The Nurse Call and the serial data output share the same female, nine pin, d-type connector.
Pin 2: Receive Data (incubator input)
Pin 3: Transmit Data (incubator output)
Pin 5: Gnd (Signal Ground)
C.1.1 Cable Requirements
The user interface cable must have capacitance less than 1500 pF. It should be a shielded cable such as
Belden 9611 with AMP shielding kit 748046-1 and ferrule 747579-8.
C.2 Data Stream
The data stream from the Giraffe products is repeated every two seconds. The RS-232 parameters are
19200 bps baud rate, no parity, 8 data bits, and one stop bit. The data is in ASCII format; the string is
described below:
HYB_1.40,36.1,OPEN,28.3,33.0,36.5,100,N,N,C,00,063,D,L,02043,0000,00,43,000,000,03,00
!
Warning: The computer or RS-232 monitor’s user program must continuously check the data
link. The program should constantly verify connection to the control panel and check for
updated data.
HYB This is the product code.
HYB represents an OmniBed.
INC represents an incubator.
1.40 This is the control board software revision (thermoregulation in the startup screen).
36.1 Temperature from Patient Probe #1.
OPEN Temperature from Patient Probe #2. OPEN represents no probe connected.
28.3 Air display temperature from the compartment probe.
33.0 Desired Environmental Temperature (DET). In Air Mode, this is also the air control
temperature.
36.5 Patient control temperature.
100 Heater power.
N Patient mode. This is either P or N.
N Open bed mode. This is either O or N.

Table of Contents

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GE Giraffe OmniBed Carestation CS1 Specifications

General IconGeneral
Temperature Range20°C to 39°C (68°F to 102°F)
Temperature Control Range (Air Mode)20°C to 39°C (68°F to 102°F)
Servo Humidity Accuracy±5% RH
Oxygen Range21% to 65%
Trend Data StorageUp to 72 hours
TypeIncubator
Weight340 lbs (154 kg)
Mattress Size66 cm x 48 cm (26 in x 19 in)
Temperature Control Range (Skin Mode)34°C to 37°C (93°F to 99°F)
Humidity Range30% to 95% RH
Power Requirements100-240 VAC, 50/60 Hz
FeaturesIntegrated scale

Summary

Revision History

Service Language Disclaimer

Safety and Regulatory Information

Warnings

Critical safety instructions for device operation and maintenance.

Cautions

Precautions to prevent damage to the device or potential hazards.

Symbols

Explanation of symbols used on the device and in the manual.

Regulatory

Information regarding compliance with directives and standards.

User Responsibility

Defines user obligations for proper operation, maintenance, and repair.

About this Manual

Intended Audience

Identifies the target users for this service manual.

Technical Competence

Specifies the necessary qualifications for performing service.

Conventions

Explains the use of warnings, cautions, notes, and symbols.

Chapter 1: Functional Description

1.1 Control Board

Detailed description of the microcontroller and its peripherals.

1.2 Relay Board

Explanation of safety relays and solid-state relays for heater control.

1.3 Infant Care Single Board Computer (ICSBC)

Overview of the microprocessor-based User Interface controller.

1.4 Alarm Board

Description of visual alarm indicators and hands-free alarm silence.

1.5 Power Supply

Details on the switching power supply and voltage distribution.

1.6 Peripheral Components

Identifies transformers and other essential peripheral components.

1.8 Servo Controlled Oxygen Option

Functional description of the oxygen sensing and delivery system.

1.9 Humidifier

Explanation of the humidifier's water path and steam generation.

1.10 System Logs

Information on accessing and storing system failure logs.

1.11 Front View

Identification of key features on the front of the device.

1.12 Probe Panel

Details on probe connectors and standby power switch.

1.13 Side View

Identification of features on the side of the device.

1.14 Rear View

Identification of ports and connectors on the rear of the device.

Chapter 2: Installation and Service Checkout

2.1 Installation

Procedures for setting up the device and releasing shipping locks.

2.2 Service Checkout

Steps to verify device operation and readiness before clinical use.

Chapter 3: Calibration and Maintenance

3.1 Service Maintenance Schedule

Recommended maintenance intervals and procedures.

3.2 Special Tools

List of required tools for recommended service procedures.

3.3 System Calibration

Procedure for calibrating system voltages and line settings.

3.4 Humidifier Calibration

Steps for calibrating the humidity sensor.

3.5 Servo Controlled Oxygen Calibration

Procedure for calibrating the servo-controlled oxygen system.

3.6 Scale Calibration

Instructions for calibrating the integrated weight scale.

3.7 Electrical Safety Tests

Guidelines for performing ground continuity and leakage current tests.

3.8 Line Voltage Calibration

Procedure for calibrating the device's line voltage settings.

Chapter 4: Understanding the Service Interface

4.1 Powering the Device

Instructions on how to safely turn the device on and off.

4.2 Accessing Service Mode

Steps to enter the device's service mode for advanced functions.

4.3 Understanding the Service Interface Layout

Overview of the service screen structure and navigation.

4.4 Static Features

Description of features available on all service screens.

4.5 Setup

Configuration options to customize device behavior and display.

4.6 Calibration

Access to calibration status and procedures for various systems.

4.7 Set Time

Procedure to set the device's real-time clock for time and date.

4.8 Upgrade

Instructions for updating the device's software.

Chapter 5: Troubleshooting

5.1 Troubleshooting Symptoms

Guides for diagnosing issues based on observed symptoms.

5.2 Additional Troubleshooting Tips

Provides further guidance for measurements and failure diagnosis.

5.3 Switches/Thermostat

Information on checking switch statuses and thermostat resistance.

5.4 Servo Controlled Oxygen

Troubleshooting specific to the servo-controlled oxygen system.

5.5 Status

Displays status of continuous self-tests and software revisions.

5.6 Switches

Shows the status of all device switches (open or closed).

5.7 Error

Lists chronological logs of system errors with numbers and dates.

5.8 Alarm Test

Procedure to test the functionality of alarm indicators and buzzer.

5.9 Diagnostic Readings

Provides status readings and allows testing of DAC voltage.

Chapter 6: Alarms and System Failure Codes

6.1 Alarms

Descriptions of alarms requiring service personnel interaction.

6.2 System Failure Codes

Explanation of system failure codes and recommended actions.

Chapter 7: Repair Procedures

7.1 Canopy Removal for Service

Step-by-step guide for safely removing the canopy assembly.

7.2 Porthole Door Replacement

Procedure for replacing the porthole door and its components.

7.3 Display Head Removal

Instructions for removing the display module and its housing.

7.4 Right Rail Assembly Repair Procedures

Detailed steps for repairing the right side rail assembly.

7.5 Left Rail Internal Repairs

Procedures for internal repairs on the left side rail assembly.

7.6 Radiant Heater Assembly Repair Procedures

Steps for disassembling and repairing the radiant heater assembly.

7.7 Compartment Sensor Repairs

Guidance on replacing or servicing the compartment sensor.

7.8 Removing the Upper End Cap Spring

Procedure for replacing the spring in the upper end cap.

7.9 Lower Device Repairs

Instructions for accessing and repairing components in the lower device.

7.10 Bed Tilt Brake Pad Replacement

Procedure for replacing the tilt brake pad assembly.

7.11 Wheel Replacement

Steps for replacing the device's wheels.

7.12 Humidifier Assembly Repairs

Detailed instructions for disassembling and repairing the humidifier.

7.13 Control Panel and Display Module Procedures

Procedures for servicing the control panel and display module.

7.14 Control Board

Steps for removing and replacing the main control board.

7.15 Relay Board

Instructions for removing and replacing the relay board.

7.16 Solid State Relays

Procedure for replacing solid state relays.

7.17 Power Supply

Steps for replacing the device's power supply unit.

7.18 Servo Controlled Oxygen Service Procedures

Procedures for servicing the servo-controlled oxygen system.

7.19 Display Module Repairs

Instructions for repairing various components of the display module.

7.20 Clock Battery Replacement

Procedure for replacing the device's internal clock battery.

7.21 Display Harness Connections

Diagrams and information on display harness connections.

Chapter 8: Illustrated Parts

8.1 Probe Housing

Illustrated parts list for the probe housing assembly.

8.2 Display Module

Illustrated parts list for the display module components.

8.3 Electrical Enclosure

Illustrated parts list for the electrical enclosure components.

8.4 Electronic Enclosure Ground Stackup

Diagrams showing the ground stackup for the electronic enclosure.

8.5 Harnesses

List of harnesses and their connections to the relay board.

8.6 Humidifier Transformer and RS-232

Illustrated parts list for humidifier transformer and RS-232 components.

8.7 Bed and Side Panels

Illustrated parts list for the bed and side panel components.

8.8 Wire Covers

Illustrated parts list for the wire covers.

8.9 Radiant Heater and Canopy

Illustrated parts list for the radiant heater and canopy assemblies.

8.10 Chassis

Illustrated parts list for the main chassis components.

8.11 Humidifier

Illustrated parts list for the humidifier assembly.

8.12 Elevating Base

Illustrated parts list for the elevating base components.

8.13 Uprights and Lift Rail Components

Illustrated parts list for uprights and lift rail components.

8.14 Compartment Sensor

Illustrated parts list for the compartment sensor.

8.15 Servo Control Oxygen

Illustrated parts list for the servo control oxygen system.

8.16 Storage Drawer

Illustrated parts list for the storage drawer assembly.

8.17 Options

List of available optional accessories for the device.

8.18 Options PNs

Part numbers for available optional accessories.

8.19 Labels

Illustrations and part numbers for various device labels.

8.20 PCB Layouts

Diagrams showing the layout of components on PCBs.

8.21 Wiring Diagrams

Schematic diagrams illustrating electrical connections.

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