GE Corometrics 250cx Series User manual

Corometrics™ 250cx Series Monitor
Service Manual
GE Healthcare
Corometrics 250cx Series Monitor English
2036947-001 Revision J
© 2013 General Electric Company.
All Rights Reserved

Corometrics™ 250cx Series Monitor
Service Manual
GE Healthcare
Corometrics 250cx Series Monitor English
2036947-001 Revision J
© 2013 General Electric Company.
All Rights Reserved

© 2005 - 2013 by General Electric Company
All rights reserved. General Electric Company reserves the right to make changes in specications and features
shown herein, or discontinue the product described at any time without notice or obligation. Contact your
GE Representative for the most current information. SuperSTAT™ is the property of GE MEDICAL SYSTEMS
Information Technologies, a GE Healthcare Company which is a division of General Electric Corporation. GE and
GE Monogram are trademarks of General Electric Company. All other company and product names mentioned
may be trademarks of the companies with which they are associated.
Warranty
This product is sold by GE Healthcare with a GE repair warranty period of 12-month to cover labor and parts*
(except for the expendable parts like fuses or batteries which have a 30-day warranty) under the terms and
conditions set forth in the GE Healthcare Warranty Statement presented to the customer at the point of sale.
* The warranty time may vary in some regions. Refer to the warranty information provided at the point of sale.

(BG)
ПРЕДУПРЕЖДЕНИЕ
Това упътване за работа е налично само на английски език.
• Ако доставчикът на услугата на клиента изиска друг език, задължение на клиента е
да осигури превод.
• Не използвайте оборудването, преди да сте се консултирали и разбрали упътването
за работа.
• Неспазването на това предупреждение може да доведе до нараняване на
доставчика на услугата, оператора или пациентa в резултат на токов удар,
механична или друга опасност.
(ZH-CN)
警告
本维修手册仅提供英文版本。
• 如果客户的维修服务人员需要非英文版本，则客户需自行提供翻译服务。
• 未详细阅读和完全理解本维修手册之前，不得进行维修。
• 忽略本警告可能对维修服务人员、操作人员或患者造成电击、机械伤害或其他形式的
伤害。
(ZH-HK)
警告
本服務手冊僅提供英文版本。
• 倘若客戶的服務供應商需要英文以外之服務手冊，客戶有責任提供翻譯服務。
• 除非已參閱本服務手冊及明白其內容，否則切勿嘗試維修設備。
• 不遵從本警告或會令服務供應商、網絡供應商或病人受到觸電、機械性或其他的危
險。
(ZH-TW)
警告
本維修手冊僅有英文版。
• 若客戶的維修廠商需要英文版以外的語言，應由客戶自行提供翻譯服務。
• 請勿試圖維修本設備，除非您已查閱並瞭解本維修手冊。
• 若未留意本警告，可能導致維修廠商、操作員或病患因觸電、機械或其他危險而受
傷。
(HR)
UPOZORENJE
Ovaj servisni priručnik dostupan je na engleskom jeziku.
• Ako davatelj usluge klijenta treba neki drugi jezik, klijent je dužan osigurati prijevod.
• Ne pokušavajte servisirati opremu ako niste u potpunosti pročitali i razumjeli ovaj
servisni priručnik.
• Zanemarite li ovo upozorenje, može doći do ozljede davatelja usluge, operatera ili
pacijenta uslijed strujnog udara, mehaničkih ili drugih rizika.

(CS)
VÝSTRAHA
Tento provozní návod existuje pouze v anglickém jazyce.
• V případě, že externí služba zákazníkům potřebuje návod v jiném jazyce, je zajištění
překladu do odpovídajícího jazyka úkolem zákazníka.
• Nesnažte se o údržbu tohoto zařízení, aniž byste si přečetli tento provozní návod a
pochopili jeho obsah.
• V případě nedodržování této výstrahy může dojít k poranění pracovníka prodejního
servisu, obslužného personálu nebo pacientů vlivem elektrického proudu, respektive
vlivem mechanických či jiných rizik.
(DA)
ADVARSEL
Denne servicemanual ndes kun på engelsk.
• Hvis en kundes tekniker har brug for et andet sprog end engelsk, er det kundens ansvar
at sørge for oversættelse.
• Forsøg ikke at servicere udstyret uden at læse og forstå denne servicemanual.
• Manglende overholdelse af denne advarsel kan medføre skade på grund af elektrisk
stød, mekanisk eller anden fare for teknikeren, operatøren eller patienten.
(NL)
WAARSCHUWING
Deze onderhoudshandleiding is enkel in het Engels verkrijgbaar.
• Als het onderhoudspersoneel een andere taal vereist, dan is de klant verantwoordelijk
voor de vertaling ervan.
• Probeer de apparatuur niet te onderhouden alvorens deze onderhoudshandleiding werd
geraadpleegd en begrepen is.
• Indien deze waarschuwing niet wordt opgevolgd, zou het onderhoudspersoneel, de
operator of een patiënt gewond kunnen raken als gevolg van een elektrische schok,
mechanische of andere gevaren.
(EN)
WARNING:
This service manual is available in English only.
• If a customer’s service provider requires a language other than English, it is the
customer’s responsibility to provide translation services.
• Do not attempt to service the equipment unless this service manual has been consulted
and is understood.
• Failure to heed this warning may result in injury to the service provider, operator, or
patient from electric shock, mechanical hazards, or other hazards.
(ET)
HOIATUS
See teenindusjuhend on saadaval ainult inglise keeles
• Kui klienditeeninduse osutaja nõuab juhendit inglise keelest erinevas keeles, vastutab
klient tõlketeenuse osutamise eest.
• Ärge üritage seadmeid teenindada enne eelnevalt käesoleva teenindusjuhendiga
tutvumist ja sellest aru saamist.
• Käesoleva hoiatuse eiramine võib põhjustada teenuseosutaja, operaatori või patsiendi
vigastamist elektrilöögi, mehaanilise või muu ohu tagajärjel.

(FI)
VAROITUS
Tämä huolto-ohje on saatavilla vain englanniksi.
• Jos asiakkaan huoltohenkilöstö vaatii muuta kuin englanninkielistä materiaalia,
tarvittavan käännöksen hankkiminen on asiakkaan vastuulla.
• Älä yritä korjata laitteistoa ennen kuin olet varmasti lukenut ja ymmärtänyt tämän
huolto-ohjeen.
• Mikäli tätä varoitusta ei noudateta, seurauksena voi olla huoltohenkilöstön, laitteiston
käyttäjän tai potilaan vahingoittuminen sähköiskun, mekaanisen vian tai muun
vaaratilanteen vuoksi.
(FR)
ATTENTION
Ce manuel d’installation et de maintenance est disponible uniquement en anglais.
• Si le technicien d’un client a besoin de ce manuel dans une langue autre que l’anglais, il
incombe au client de le faire traduire.
• Ne pas tenter d’intervenir sur les équipements tant que ce manuel d’installation et de
maintenance n’a pas été consulté et compris.
• Le non-respect de cet avertissement peut entraîner chez le technicien, l’opérateur ou le
patient des blessures dues à des dangers électriques, mécaniques ou autres.
(DE)
WARNUNG
Diese Serviceanleitung existiert nur in englischer Sprache.
• Falls ein fremder Kundendienst eine andere Sprache benötigt, ist es Aufgabe des Kunden
für eine entsprechende Übersetzung zu sorgen.
• Versuchen Sie nicht diese Anlage zu warten, ohne diese Serviceanleitung gelesen und
verstanden zu haben.
• Wird diese Warnung nicht beachtet, so kann es zu Verletzungen des
Kundendiensttechnikers, des Bedieners oder des Patienten durch Stromschläge,
mechanische oder sonstige Gefahren kommen.
(EL)
ΠΡΟΕΙΔΟΠΟΙΗΣΗ
Το παρόν εγχειρίδιο σέρβις διατίθεται μόνο στα αγγλικά.
• Εάν ο τεχνικός σέρβις ενός πελάτη απαιτεί το παρόν εγχειρίδιο σε γλώσσα εκτός των
αγγλικών, αποτελεί ευθύνη του πελάτη να παρέχει τις υπηρεσίες μετάφρασης.
• Μην επιχειρήσετε την εκτέλεση εργασιών σέρβις στον εξοπλισμό αν δεν έχετε
συμβουλευτεί και κατανοήσει το παρόν εγχειρίδιο σέρβις.
• Αν δεν προσέξετε την προειδοποίηση αυτή, ενδέχεται να προκληθεί τραυματισμός στον
τεχνικό σέρβις, στο χειριστή ή στον ασθενή από ηλεκτροπληξία, μηχανικούς ή άλλους
κινδύνους.

(HU)
FIGYELMEZTETÉS
Ezen karbantartási kézikönyv kizárólag angol nyelven érhető el.
• Ha a vevő szolgáltatója angoltól eltérő nyelvre tart igényt, akkor a vevő felelőssége a
fordítás elkészíttetése.
• Ne próbálja elkezdeni használni a berendezést, amíg a karbantartási kézikönyvben
leírtakat nem értelmezték.
• Ezen gyelmeztetés gyelmen kívül hagyása a szolgáltató, működtető vagy a beteg
áramütés, mechanikai vagy egyéb veszélyhelyzet miatti sérülését eredményezheti.
(IS)
AÐVÖRUN
Þessi þjónustuhandbók er aðeins fáanleg á ensku.
• Ef að þjónustuveitandi viðskiptamanns þarfnast annas tungumáls en ensku, er það
skylda viðskiptamanns að skaa tungumálaþjónustu.
• Reynið ekki að afgreiða tækið nema að þessi þjónustuhandbók hefur verið skoðuð og
skilin.
• Brot á sinna þessari aðvörun getur leitt til meiðsla á þjónustuveitanda, stjórnanda eða
sjúklings frá raosti, vélrænu eða öðrum áhættum.
(IT)
AVVERTENZA
Il presente manuale di manutenzione è disponibile soltanto in lingua inglese.
• Se un addetto alla manutenzione richiede il manuale in una lingua diversa, il cliente è
tenuto a provvedere direttamente alla traduzione.
• Procedere alla manutenzione dell’apparecchiatura solo dopo aver consultato il presente
manuale ed averne compreso il contenuto.
• Il mancato rispetto della presente avvertenza potrebbe causare lesioni all’addetto alla
manutenzione, all’operatore o ai pazienti provocate da scosse elettriche, urti meccanici
o altri rischi.
(JA)
このサービスマニュアルには英語版しかありません。
• サービスを担当される業者が英語以外の言語を要求される場合、翻訳作業はその業
者の責任で行うものとさせていただきます。
• このサービスマニュアルを熟読し理解せずに、装置のサービスを行わないでくださ
い。
• この警告に従わない場合、サービスを担当される方、操作員あるいは患者さんが、
感電や機械的又はその他の危険により負傷する可能性があります。
(KO)
경고
본 서비스 매뉴얼은 영어로만 이용하실 수 있습니다.
• 고객의 서비스 제공자가 영어 이외의 언어를 요구할 경우, 번역 서비스를 제공하는
것은 고객의 책임입니다.
• 본 서비스 매뉴얼을 참조하여 숙지하지 않은 이상 해당 장비를 수리하려고 시도하지
마십시오.
• 본 경고 사항에 유의하지 않으면 전기 쇼크, 기계적 위험, 또는 기타 위험으로 인해
서비스 제공자, 사용자 또는 환자에게 부상을 입힐 수 있습니다.

(LV)
BRĪDINĀJUMS
Šī apkopes rokasgrāmata ir pieejama tikai angļu valodā.
• Ja klienta apkopes sniedzējam nepieciešama informācija citā valodā, klienta pienākums
ir nodrošināt tulkojumu.
• Neveiciet aprīkojuma apkopi bez apkopes rokasgrāmatas izlasīšanas un saprašanas.
• Šī brīdinājuma neievērošanas rezultātā var rasties elektriskās strāvas trieciena,
mehānisku vai citu faktoru izraisītu traumu risks apkopes sniedzējam, operatoram vai
pacientam.
(LT)
ĮSPĖJIMAS
Šis eksploatavimo vadovas yra tik anglų kalba.
• Jei kliento paslaugų tiekėjas reikalauja vadovo kita kalba – ne anglų, suteikti vertimo
paslaugas privalo klientas.
• Nemėginkite atlikti įrangos techninės priežiūros, jei neperskaitėte ar nesupratote šio
eksploatavimo vadovo.
• Jei nepaisysite šio įspėjimo, galimi paslaugų tiekėjo, operatoriaus ar paciento sužalojimai
dėl elektros šoko, mechaninių ar kitų pavojų.
(NO)
ADVARSEL
Denne servicehåndboken nnes bare på engelsk.
• Hvis kundens serviceleverandør har bruk for et annet språk, er det kundens ansvar å
sørge for oversettelse.
• Ikke forsøk å reparere utstyret uten at denne servicehåndboken er lest og forstått.
• Manglende hensyn til denne advarselen kan føre til at serviceleverandøren, operatøren
eller pasienten skades på grunn av elektrisk støt, mekaniske eller andre farer.
(PL)
OSTRZEŻENIE
Niniejszy podręcznik serwisowy dostępny jest jedynie w języku angielskim.
• Jeśli serwisant klienta wymaga języka innego niż angielski, zapewnienie usługi
tłumaczenia jest obowiązkiem klienta.
• Nie próbować serwisować urządzenia bez zapoznania się z niniejszym podręcznikiem
serwisowym i zrozumienia go.
• Niezastosowanie się do tego ostrzeżenia może doprowadzić do obrażeń serwisanta,
operatora lub pacjenta w wyniku porażenia prądem elektrycznym, zagrożenia
mechanicznego bądź innego.
(PT-BR)
AVISO
Este manual de assistência técnica encontra-se disponível unicamente em inglês.
• Se outro serviço de assistência técnica solicitar a tradução deste manual, caberá ao
cliente fornecer os serviços de tradução.
• Não tente reparar o equipamento sem ter consultado e compreendido este manual de
assistência técnica.
• A não observância deste aviso pode ocasionar ferimentos no técnico, operador ou
paciente decorrentes de choques elétricos, mecânicos ou outros.

(PT-PT)
ATENÇÃO
Este manual de assistência técnica só se encontra disponível em inglês.
• Se qualquer outro serviço de assistência técnica solicitar este manual noutro idioma, é
da responsabilidade do cliente fornecer os serviços de tradução.
• Não tente reparar o equipamento sem ter consultado e compreendido este manual de
assistência técnica.
• O não cumprimento deste aviso pode colocar em perigo a segurança do técnico, do
operador ou do paciente devido a choques eléctricos, mecânicos ou outros.
(RO)
ATENŢIE
Acest manual de service este disponibil doar în limba engleză.
• Dacă un furnizor de servicii pentru clienţi necesită o altă limbă decât cea engleză, este
de datoria clientului să furnizeze o traducere.
• Nu încercaţi să reparaţi echipamentul decât ulterior consultării şi înţelegerii acestui
manual de service.
• Ignorarea acestui avertisment ar putea duce la rănirea depanatorului, operatorului sau
pacientului în urma pericolelor de electrocutare, mecanice sau de altă natură.
(RU)
ОСТОРОЖНО!
Данное руководство по техническому обслуживанию представлено только на
английском языке.
• Если сервисному персоналу клиента необходимо руководство не на английском, а на
каком-то другом языке, клиенту следует самостоятельно обеспечить перевод.
• Перед техническим обслуживанием оборудования обязательно обратитесь к
данному руководству и поймите изложенные в нем сведения.
• Несоблюдение требований данного предупреждения может привести к тому, что
специалист по техобслуживанию, оператор или пациент получит удар электрическим
током, механическую травму или другое повреждение.
(SR)
UPOZORENJE
Ovo servisno uputstvo je dostupno samo na engleskom jeziku.
• Ako klijentov serviser zahteva neki drugi jezik, klijent je dužan da obezbedi prevodilačke
usluge.
• Ne pokušavajte da opravite uređaj ako niste pročitali i razumeli ovo servisno uputstvo.
• Zanemarivanje ovog upozorenja može dovesti do povređivanja servisera, rukovaoca ili
pacijenta usled strujnog udara ili mehaničkih i drugih opasnosti.
(SK)
UPOZORNENIE
Tento návod na obsluhu je k dispozícii len v angličtine.
• Ak zákazníkov poskytovateľ služieb vyžaduje iný jazyk ako angličtinu, poskytnutie
prekladateľských služieb je zodpovednosťou zákazníka.
• Nepokúšajte sa o obsluhu zariadenia, kým si neprečítate návod na obluhu a
neporozumiete mu.
• Zanedbanie tohto upozornenia môže spôsobiť zranenie poskytovateľa služieb,
obsluhujúcej osoby alebo pacienta elektrickým prúdom, mechanické alebo iné
ohrozenie.

(ES)
ATENCION
Este manual de servicio sólo existe en inglés.
• Si el encargado de mantenimiento de un cliente necesita un idioma que no sea el inglés,
el cliente deberá encargarse de la traducción del manual.
• No se deberá dar servicio técnico al equipo, sin haber consultado y comprendido este
manual de servicio.
• La no observancia del presente aviso puede dar lugar a que el proveedor de servicios, el
operador o el paciente sufran lesiones provocadas por causas eléctricas, mecánicas o
de otra naturaleza.
(SV)
VARNING
Den här servicehandboken nns bara tillgänglig på engelska.
• Om en kunds servicetekniker har behov av ett annat språk än engelska, ansvarar
kunden för att tillhandahålla översättningstjänster.
• Försök inte utföra service på utrustningen om du inte har läst och förstår den här
servicehandboken.
• Om du inte tar hänsyn till den här varningen kan det resultera i skador på
serviceteknikern, operatören eller patienten till följd av elektriska stötar, mekaniska faror
eller andra faror.
(SL)
OPOZORILO
Ta servisni priročnik je na voljo samo v angleškem jeziku.·
• Če ponudnik storitve stranke potrebuje priročnik v drugem jeziku, mora stranka
zagotoviti prevod.·
• Ne poskušajte servisirati opreme, če tega priročnika niste v celoti prebrali in razumeli.·
• Če tega opozorila ne upoštevate, se lahko zaradi električnega udara, mehanskih ali
drugih nevarnosti poškoduje ponudnik storitev, operater ali bolnik.
(TR)
DİKKAT
Bu servis kılavuzunun sadece ingilizcesi mevcuttur.
• Eğer müşteri teknisyeni bu kılavuzu ingilizce dışında bir başka lisandan talep ederse,
bunu tercüme ettirmek müşteriye düşer.
• Servis kılavuzunu okuyup anlamadan ekipmanlara müdahale etmeyiniz.
• Bu uyarıya uyulmaması, elektrik, mekanik veya diğer tehlikelerden dolayı teknisyen,
operatör veya hastanın yaralanmasına yol açabilir.

© 2013 by General Electric Company. All rights reserved. 2036947-001 xiii
Table of Contents
Compliance........................................................................................................................................................................xviii
Components of the Certied Systems ..................................................................................................................xviii
Component Description...............................................................................................................................................xviii
Exceptions..........................................................................................................................................................................xviii
Monitor System EMC: Immunity Performance..................................................................................................xviii
About this Manual.................................................................................................................. 1
Scope and Intended Users .............................................................................................................................................1
Conventions............................................................................................................................................................................1
User Responsibility..............................................................................................................................................................1
References...............................................................................................................................................................................2
Denitions of Terms............................................................................................................................................................2
Symbols....................................................................................................................................................................................3
Important Safety Information ............................................................................................ 5
Warnings, Cautions and Notes......................................................................................................................................6
Electromagnetic Interference ........................................................................................................................................9
Chapter 1: System Description......................................................................................... 11
1.1 System Overview....................................................................................................................................................... 11
1.2 Front Panel Controls, Indicators, and Connectors ..................................................................................... 13
1.3 Display Description................................................................................................................................................... 15
1.3.1 Primary Labor Parameters..................................................................................................................... 16
1.3.2 Additional Parameters ............................................................................................................................. 16
1.3.3 Waveform....................................................................................................................................................... 16
1.3.4 Time................................................................................................................................................................... 16
1.3.5 Softkeys........................................................................................................................................................... 16
1.4 Rear Panel Descriptions ......................................................................................................................................... 19
1.5 Peripherals Description........................................................................................................................................... 21
1.5.1 CorometricsTM 340 Telemetry and Mini Telemetry ..................................................................... 21
1.5.2 Quantitative Sentinel/Perinatal System ........................................................................................... 22
1.5.3 Exergen® TAT-5000TM..............................................................................................................................................................22

xiv 2036947-001 © 2013 by General Electric Company. All rights reserved.
Table of Contents
1.5.4 DINAMAP®Models PRO Series 100-400 and ProCare ............................................................... 22
1.6 Theory of Operation ................................................................................................................................................ 23
1.6.1 Digital System Processor (DSP) / Display Board........................................................................... 23
1.6.2 Main Board..................................................................................................................................................... 25
1.6.3 User-Interface Keypad & Volume/Alarm Keypad Boards........................................................ 26
1.6.4 Video Decoder Board ................................................................................................................................ 26
1.6.5 Recorder Board ............................................................................................................................................26
1.6.6 Communications Board ........................................................................................................................... 26
1.6.7 MSpO2Connector Board ......................................................................................................................... 26
1.6.8 MSpO2Carrier Board................................................................................................................................. 27
1.6.9 FECG/UA Board............................................................................................................................................. 27
1.6.10 MECG Board................................................................................................................................................27
1.6.11 Dual Ultrasound Board.......................................................................................................................... 27
1.6.12 Isolated Power Supply Board.............................................................................................................. 28
1.6.13 Front-End Motherboard......................................................................................................................... 28
1.6.14 Memory Battery........................................................................................................................................28
Chapter 2: Installation ........................................................................................................ 29
2.1 Time Required for Installation.............................................................................................................................. 29
2.2 Environmental Requirements .............................................................................................................................. 29
2.3 Tool Requirements .................................................................................................................................................... 29
2.4 Installation Procedure ............................................................................................................................................. 29
2.4.1 Strip Chart Recorder Paper Load......................................................................................................... 29
2.4.2 Peripheral Connections............................................................................................................................ 31
2.4.3 Power Cord Attachment........................................................................................................................... 31
2.4.4 System Conguration ............................................................................................................................... 31
Chapter 3: Maintenance and Checkout .......................................................................... 35
3.1 Procedures Schedule............................................................................................................................................... 35
3.1.1 Environmental Requirements................................................................................................................ 36
3.2 Tool Requirements .................................................................................................................................................... 36
3.3 Maintenance and Checkout Procedures........................................................................................................ 36
3.3.1 Visual Inspection..........................................................................................................................................36
3.3.2 Cleaning (Thermal Print Head) .............................................................................................................. 37
3.3.3 Transducer Checks..................................................................................................................................... 37
3.3.4 Functional Checks....................................................................................................................................... 38
3.3.5 Pattern Memory Check............................................................................................................................. 49
3.3.6 NIBP Calibration Check............................................................................................................................. 52
3.3.7 Electrical Safety Tests ............................................................................................................................... 52

© 2013 by General Electric Company. All rights reserved. 2036947-001 xv
Table of Contents
Chapter 4: Calibration......................................................................................................... 55
4.1 Calibration Schedule................................................................................................................................................ 55
4.2 Environmental Requirements .............................................................................................................................. 56
4.3 Tool Requirements .................................................................................................................................................... 56
4.4 Calibration Procedures ........................................................................................................................................... 56
4.4.1 NIBP Calibration Check............................................................................................................................. 56
4.4.2 Recorder Photosensors Check.............................................................................................................. 59
4.4.3 Recorder Calibration (osets) Check.................................................................................................. 61
Chapter 5: Diagnostics and Troubleshooting ................................................................. 63
5.1 General Troubleshooting Table........................................................................................................................... 63
5.2 Ultrasound Troubleshooting Table.................................................................................................................... 67
5.3 FECG Troubleshooting Table ................................................................................................................................ 69
5.4 External Uterine Activity Troubleshooting Table......................................................................................... 70
5.5 Internal Uterine Activity Troubleshooting Table ......................................................................................... 72
5.6 MECG Troubleshooting Table............................................................................................................................... 73
5.7 Blood Pressure Troubleshooting Table............................................................................................................ 73
5.8 Maternal Pulse Oximetry Troubleshooting Table ....................................................................................... 75
5.9 Main Board Troubleshooting – Voltage Checks .......................................................................................... 76
5.10 FECG/UA Board Troubleshooting – Voltage Adjustments.................................................................... 77
5.11 Recorder Troubleshooting .................................................................................................................................. 77
5.11.1 Vertical Oset Adjustment ................................................................................................................... 77
5.11.2 Horizontal Oset Adjustment.............................................................................................................. 79
5.11.3 Light Printing............................................................................................................................................... 80
Chapter 6: Repair and Replacement Procedures ........................................................... 85
6.1 Top Cover, Top Cover Gasket, and Timekeeping RAM Chip Replacement...................................... 86
6.2 Speaker Replacement............................................................................................................................................. 87
6.3 DSP/Display Board Replacement....................................................................................................................... 88
6.4 Communication Board Replacement............................................................................................................... 89
6.5 Pneumatics Assembly Replacement................................................................................................................ 90
6.6 Main Board Replacement...................................................................................................................................... 92
6.7 Display Assembly Replacement......................................................................................................................... 93
6.8 Power Switch Assembly Replacement............................................................................................................ 95
6.9 Trim Knob Control Assembly Replacement .................................................................................................. 96
6.10 Keypads Replacement......................................................................................................................................... 97
6.11 Main Power Supply / Fan Replacement....................................................................................................... 99

xvi 2036947-001 © 2013 by General Electric Company. All rights reserved.
Table of Contents
6.12 Dual Ultrasound Board Replacement .........................................................................................................101
6.13 FECG/UA Board and MECG Board Replacement....................................................................................102
6.14 SpO2Carrier Board (with Nellcor/Masimo SpO2 Module) Replacement....................................103
6.15 Isolated Power Supply Board Replacement.............................................................................................104
6.16 Front-end Motherboard Replacement........................................................................................................105
6.17 Recorder Assembly and Recorder Door Button Replacement........................................................107
6.18 Recorder Board Replacement.........................................................................................................................109
6.19 Recorder Stepper Motor Replacement .......................................................................................................110
6.20 Recorder Paper-Out/Paper-Low Photosensor Replacement...........................................................111
6.21 Recorder Paper-Loading Photosensor Replacement ..........................................................................113
6.22 Recorder Thermal Print Head Replacement ............................................................................................114
6.23 Front Bezel Replacement..................................................................................................................................115
Chapter 7: Service Parts ................................................................................................... 117
7.1 Illustrated Parts........................................................................................................................................................118
7.2 Labels............................................................................................................................................................................123
7.3 Power Cords...............................................................................................................................................................124
7.4 FRU List.........................................................................................................................................................................125
Appendix A: Technical Specications............................................................................. 131
A.1 General Product Specications........................................................................................................................132
A.2 Strip Chart Recorder Specications................................................................................................................133
A.3 Operating Modes Specications......................................................................................................................134
Appendix B: Alarm Summary .......................................................................................... 141
Appendix C: Electromagnetic Compatibility ................................................................ 143
C.1 Manufacturer’s Guidance and Declaration – Electromagnetic Emissions...................................143
C.2 Manufacturer’s Guidance and Declaration – Electromagnetic Immunity...................................144
C.3 Recommended Separation Distances...........................................................................................................146
C.4 Compliant Cables and Accessories.................................................................................................................146
Appendix D: PS320 Fetal Simulator Setup ..................................................................... 149
D.1 Parts Required..........................................................................................................................................................149
D.2 PS320 Fetal Simulator Setup.............................................................................................................................150
Appendix E: Service Mode Screens.................................................................................. 153

© 2013 by General Electric Company. All rights reserved. 2036947-001 xvii
Table of Contents
E.1 Service Lock Screen................................................................................................................................................154
E.2 Install Options Screens..........................................................................................................................................155
E.3 Printing Setup Information..................................................................................................................................159
E.4 Communications Setup Screen.........................................................................................................................159
E.5 Error Log Screen.......................................................................................................................................................160
E.6 Diagnostic Control Screen...................................................................................................................................161
E.7 J102 Screen................................................................................................................................................................162
E.8 NIBP Calibration Screen........................................................................................................................................163
E.9 Setup Screen Defaults...........................................................................................................................................163
E.9.1 Operator Setup Screens.........................................................................................................................164
E.9.2 Service Mode Screens.............................................................................................................................167
Appendix F: CPU Software Upgrade................................................................................ 169
F.1 Tool Requirement.....................................................................................................................................................169
F.2 Upgrade Procedure.................................................................................................................................................169
Appendix G: CorometricsTM 325 Simulator Setup and Use.......................................... 171
G.1 Simulator Setup .......................................................................................................................................................171
G.2 Alarms Check............................................................................................................................................................171
G.3 MECG Input Check..................................................................................................................................................174
G.4 FECG Input Check....................................................................................................................................................175
G.5 Ultrasound Input Check.......................................................................................................................................177
G.6 Uterine Activity Check ..........................................................................................................................................178
G.7 Pattern Memory Check ........................................................................................................................................179
G.8 Dual Heart Rate Check (Non-Pattern, FECG/US Modes) .......................................................................180
G.9 Dual Heart Rate Check (Non-Pattern, Dual US Modes) .........................................................................181
G.10 Fetal Movement Detection Check................................................................................................................182

xviii 2036947-001 © 2013 by General Electric Company. All rights reserved.
Compliance
A GE brand Corometrics™ 250cx Series Monitor bears CE mark CE-0459 indicating its conformity with the
provisions of the Council Directive 93/42/EEC concerning medical devices and fullls the essential requirements
of Annex I of this directive.
The device is manufactured in India; the CE mark is applied under the authority of Notied Body GMED (0459).
The country of manufacture and appropriate Notied Body can be found on the equipment labeling.
The product complies with the requirements of standard EN 60601-1-2 “Electromagnetic Compatibility—
Medical Electrical Equipment” and standard EN 60601-1 “General Requirements for Safety.”
Components of the Certied Systems
The IEC electromagnetic compatibility (EN) standards require individual equipment (components and
accessories) to be congured as a system for evaluation. For systems that include a number of dierent
equipment that perform a number of functions, one of each type of equipment shall be included in the
evaluation.
The equipment listed below is representative of all possible combinations. For individual equipment
certication, refer to the appropriate declarations of conformity.
Component Description
• 250cx Series Maternal/Fetal Monitor
• Model 146 Fetal Acoustic Stimulator
• Intrauterine Pressure Transducer
• FECG Cable/Legplate
• Ultrasound Transducers (x2)
• Blood Pressure Hose and Cu
• MSpO2 Interconnect Cable and Sensor
• MECG Cable
• FECG/MECG Adapter Cable
• Remote Event Marker
• RS-232C Interconnect Cables (x3)
• Central Nurses Station Interconnect Cable
• Model 2116B Keyboard and Interconnect Cable
• Model 1563AAO Telemetry Cable
• Exergen® TAT-5000™
• External 15” display
Exceptions
None
Monitor System EMC: Immunity Performance
Be aware that adding accessories or components, or modifying the medical device or system may degrade the
EMI performance. Consult with qualied personnel regarding changes to the system conguration.

About this Manual
Scope and Intended Users
This service manual describes the installation, maintenance, checkout, calibration and repair of the
CorometricsTM 250cx Series monitor. The intended users for this service manual are biomedical engineering
service providers of the hospitals and GE service personnel.
Conventions
WARNING:
A WARNING statement is used when the possibility of injury to the patient or the operator
exists.
CAUTION:
A CAUTION statement is used when the possibility of damage to the equipment exists.
SENSITIVE TO ELECTROSTATIC DISCHARGE CAUTION
An electrostatic discharge (ESD) Susceptibility symbol is displayed to alert service personnel
that the part(s) are sensitive to electrostatic discharge and that static control procedures must
be used to prevent damage to the equipment.
User Responsibility
This Product will perform in conformity with the description thereof contained in this manual and
accompanying labels and/or inserts, when assembled, operated, maintained and repaired in accordance
with the instructions provided. This Product must be checked periodically. A defective Product should not be
used. Parts that are broken, missing, plainly worn, distorted or contaminated should be replaced immediately.
Should such repair or replacement become necessary, GE Healthcare recommends that a telephone or
written request for service advice be made to the nearest GE Healthcare Regional Service Center. This Product
or any of its parts should not be repaired other than in accordance with written instructions provided by GE
Healthcare and by GE Healthcare trained personnel. The Product must not be altered without GE Healthcare’s
prior written approval. The user of this Product shall have the sole responsibility for any malfunction that
results from improper use, faulty maintenance, improper repair, damage or alteration by anyone other than GE
Healthcare.
This Product is intended for use by clinical professionals who are expected to know the medical procedures,
practices, and terminology required to monitor obstetrical patients. This manual documents all possible
parameters available in the CorometricsTM 250cx Series monitor. It is the responsibility of each hospital to
ensure that the Labor and Delivery sta is trained in all aspects of the selected model. The CorometricsTM 250cx
Series monitor is designed to assist the perinatal sta by providing information regarding the clinical status of
the mother and fetus during labor. The monitor does not replace observation and evaluation of the mother and
fetus at regular intervals, by a qualied care provider, who will make diagnoses and decide on treatments or
© 2013 by General Electric Company. All rights reserved. 2036947-001 1

interventions. Visual assessment of the monitor display and strip chart must be combined with knowledge of
patient history and risk factors to properly care for the mother and fetus.
WARNING:
This device shall not be repaired other than in accordance with written instructions provided
by GE Healthcare and by GE Healthcare trained personnel.
CAUTION:
Untied States federal law restricts this device to sale by or on the order of a licensed medical
practitioner.
References
The following table lists other manuals pertaining to the CorometricsTM 250cx Series monitor service manual:
References Orderable Part Number
CorometricsTM 250cx Series Monitor Operator’s Manual (English) 2036946-001
CorometricsTM Model 340 Service Manual 2006920-001
Mini Telemetry System Service Manual 2049821-001
Fluke® PS320 Fetal Simulator User’s Manual Visit www.ukebiomedical.com
Maternal/Fetal Monitoring Clinical Application Operator’s Manual 15457AA
CorometricsTM Fetal Acoustic Stimulator Operator’s Manual 1168AA
Denitions of Terms
Term Denition
BPM Beat Per Minute
ECG Electrocardiogram
ESD Electro Static Discharge
FECG Fetal Electrocardiogram
FHR Fetal Heart Rate
FAST Fetal Acoustic Stimulation Test
FMD Fetal Movement Detection
HBC Heart Beat Coincidence
INOP Inoperable
IUPC Intra-Uterine Pressure Catheter
LCD Liquid Crystal Display
MECG Maternal Electrocardiogram
NIBP Non-Invasive Blood Pressure
REM Remote Event Marker
SpO2 Pulse Oximeter Oxygen Saturation
TOCO Non-invasive method of measuring uterine activity
2 2036947-001 © 2013 by General Electric Company. All rights reserved.
About this Manual