GE Corometrics 250cx Series

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5-12 250cx Series Maternal/Fetal Monitor Revision C

2036947-001

Troubleshooting: Diagnostic Control Screen

Recorder Top View

Recorder Right Side View

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Main Page

Table of Contents7
Introduction15
Revision History15
Safety Information17
Responsibility of the Manufacturer17
Responsibility of the User17
References to Persons, Places, and Institutions17
Hazard Definitions18
Product Specific Hazards19
Cautions22
Electromagnetic Interference23
Equipment Symbols24
Service Requirements25
Equipment ID25
Intended Audience26
Intended Use26
Related Manuals27
Equipment Overview29
Equipment Description31
Front Panel Description32
Front Panel Displays35
Display Example36
Setup Screens36
Softkeys36
Mode Title Softkeys36
Waveform Softkeys37
Dedicated Softkey Area37
Rear Panel Description40
Optional Components42
Software Upgrades42
Adding Spectra Alerts42
Adding Fetal Movement Detection42
Peripheral Components42
Nellcor® Puritan Bennett Model N-200 Maternal Pulse Oximeter42
Nellcor Puritan Bennett Model N-400 Fetal Pulse Oximeter43
DINAMAP Models PRO Series 100-400 and Procare44
Centricity Perinatal (QS)44
Exergen® TAT-500044
GE Healthcare Protocols45
250Plus Protocol45
115 And 115X/R Protocols45
Theory of Operation46
Systems Overview46
Installation55
Tools Required57
Connections57
Fetal Acoustic Stimulator57
Remote Marks Connector57
ECG out Connector57
J101 Connector (Model 340 Telemetry System Interface)58
J109, J110, and J111 Connectors (RS-232C)59
Power60
J112 (External Display Connector)61
Self-Test Routine61
Battery-Backed RAM Status62
Setup63
Loading Strip Chart Recorder Paper63
Mounting a Strain Gauge66
Setup Screens66
Service Mode Screens66
Service Lock Screen67
Install Options Screens68
Printing System Setup Information74
Communications Setup Screen75
Baudrate75
Mode75
Configuration Switches76
Factory Defaults77
Maintenance81
Maintenance Schedule83
Visual Inspection84
Cleaning85
Monitor Exterior85
Display86
Tocotransducer and Ultrasound Transducer86
Leg Plates and MECG Cables86
Maternal NIBP Cuffs and Hoses87
Periodic Thermal Printhead Cleaning88
Cleaning the UA Strain Gauge88
Disposal of Product Waste89
Patient Applied Parts89
Packaging Material90
Monitor90
Electrical Safety Tests90
Initial Conditions90
AC Line90
Ground Impedance90
Chassis Leakage91
Patient-To-Ground Leakage for MECG/FECG91
Patient-To-Line (ISO) Leakage for MECG/FECG91
Patient-To-Ground Leakage for IUP92
Patient-To-Line (ISO) Leakage for IUP92
Patient-To-Ground Leakage for US1/US292
Patient-To-Line (ISO) Leakage for US1/US293
Patient-To-Ground Leakage for Spo293
Patient-To-Line Leakage for Spo293
Dielectric (Hi-Pot) Tests94
Checkout96
General96
Equipment Required97
Self-Test Routine97
Front Panel Button Test99
Connecting the Simulator99
MECG Test100
FECG Test103
Ultrasound Test106
Fetal Movement Detection Test108
Ultrasound Transducer Test109
Uterine Activity Test110
Testing the Tocotransducers112
Strain Gauge Transducer Test113
Pattern Memory Test114
Dual Heart Rate Test (Non-Pattern)115
FECG/US Modes115
Dual Ultrasound Modes116
Alarm Test117
Mspo Test119
NIBP Calibration and Testing120
Purpose120
Required Hardware120
General Calibration Sequence121
Calibration Verification121
Calibrate Transducers121
Overpressure Detection122
System Leakage122
Display Check123
Checking a Display123
Verifying the DSP Board Operation123
External Display124
Maternal Spo 2 Calibration124
Hardware Switches124
Main Board SW1 Switch Settings125
J102 Analog Output Connector DAC Static Test125
Verification126
RS-232C Connector Loopback Test128
Making a Loopback Test Connector128
Testing the Port(S)128
Calibration130
Before You Begin Electronic Calibration130
General130
Handling Precautions130
Power Supply Voltages-Verification130
Main Board Power Supply Voltages130
Isolated Power Supply Board Voltages131
Isolated FECG/UA Board Voltages131
Recorder Photosensor Calibration132
Adjusting the Paper-Low Photosensor132
Adjusting the Paper-Out Photosensor132
Adjusting the Paper-Loading Sensor133
Repair Log134
Preventative Maintenance Inspection Report135
Configuration135
Tools Required135
Visual Inspection135
Comments139
Troubleshooting141
Diagnostic Tests143
Main Motherboard and DSP Board Self-Test143
Monitor Self-Test143
Error Log Screen143
Diagnostic Control Screen145
Recorder Calibration Test146
CPU Version146
DSP Version146
Run Time147
Recorder Time147
Recorder Servicing147
Faqs156
System Troubleshooting177
General Troubleshooting186
Ultrasound Troubleshooting187
FECG Troubleshooting187
External Uterine Activity Troubleshooting188
Internal UA Troubleshooting189
MECG Troubleshooting189
Blood Pressure Troubleshooting190
Maternal Pulse Oximetry Troubleshooting191
Parts List, Drawings, and Replacement193
Ordering Parts195
Service Parts195
Field-Replaceable Units (Frus)196
FRU List196
FRU Main Reference Guide Drawing198
Assembly/Disassembly of Frus200
2025177-003 Speaker200
2025177-037 Main Board200
2025177-005 DSP Board201
2025177-006 Main Power Supply202
2025177-007 Dual Ultrasound Board202
2025177-008 FECG/UA Board203
2025177-009 Isolated Power Supply Board204
2025177-010 Spo2 Carrier Board with Nellcor Mspo2 Module204
2025177-013 Front-End Motherboard206
2025177-036 Chassis207
2025177-016 COMM Board210
2025177-017 Recorder Assembly210
2025177-018 Recorder Board212
2025177-019 Cables213
2025177-020 Pneumatics Assembly214
2025177-021 Display Assembly215
2025177-022 Front Bezel216
2025177-023 Keypads218
2025177-026 Trim Knob and Encoder219
2025177-027 Power Switch Assembly220
2025177-028 Main Power Supply221
2025177-029 MECG Board222
2025177-031 Top Cover Gasket223
Technical Specifications225
General Monitor227
Operating Modes228
Strip Chart Recorder235
Alarms Summary237
Electromagnetic Compatibility243
Electromagnetic Compatibility (EMC243
Guidance and Manufacturer's Declaration - Electromagnetic Emissions243
Guidance and Manufacturer's Declaration - Electromagnetic Immunity244
Recommended Separation Distances246
Compliant Cables and Accessories247

GE Corometrics 250cx Series

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