Philips makes no warranty of any kind with regard to this material, including, but
not limited to, the implied warranties of merchantability and fitness for a particular
purpose. Philips Medical Systems shall not be liable for errors contained herein or for
incidental or consequential damages in connection with the furnishing, performance
or use of this material.
This document contains proprietary information that is protected by copyright. All
rights are reserved. No part of this document may be photocopied, reproduced or
translated to another language without prior written consent of Philips Medical
Systems.
The information contained in this document is subject to change without notice.
Philips assumes no responsibility for the use or reliability of its software on
equipment that is not furnished by Philips.
Purchase of this instrument confers no express or implied license under any Nellcor
patent or copyright to use this instrument with any fetal oximetry sensor that is not
manufactured or licensed by Nellcor.
Dinamap is a trademark of General Electric.
Press-Mate is a trademark of the COLIN Corporation.
Federal Law (US) restricts this device to sale by or on the order of a physician.
Caution
Failure on the part of the responsible individual hospital or institution
employing the use of this equipment to implement a satisfactory
maintenance schedule may cause undue equipment failure and possible
health hazards.
ii
Printing History
New editions are complete revisions of the manual. Update packages, which are issued
between editions, contain additional and replacement pages to be added to the manual. The
dates on the title page change only when a new edition or a new update is published.
This guide tells you how to install, service, and repair an Series 50 A (M1351A) and an
Series 50 IP/IP-2 (M1353A) fetal monitor. Throughout this book, the M1353A is referred
to as the IP-2. This also covers the IP, unless stated otherwise. It describes the system
hardware and software, and tells you how to test the system and diagnose operating and
service problems.
It gives instructions for both the Series 50 A and the Series 50 IP/IP-2 monitors. The
features available on the monitor you are installing or servicing depend on which options
have been purchased. If your monitor does not have a described parameter, you can skip
that part of the instruction and move on to the next point.
Who Should
Read This Guide
What to do
Next
Repair Strategy
The manual is for anyone who services and repairs Series 50 A (M1351A) and Series
50 IP/IP-2 (M1353A) fetal monitors. You must understand English and be familiar with
current conventional technical terms.
Familiarize yourself with the contents of this guide before attempting to install or service the
monitor.
Reading operating error messages and the error log helps you to determine whether a fault is
a hardware or software problem. Faults may be repaired by replacing a board when possible,
or exchanging the monitor. Repair or replacement of components on the boards should not
be attempted.
After any repairs you must carry out the following tests:
!Performance test, by running the Self Test (see page 65).
!Quick Test (see page 66).
!Parameter Test (see page 68).
You must also perform the appropriate safety tests (see the section “Safety Testing” on
page 100).
A series of preventive maintenance tasks and performance assurance tests must be carried
out regularly to ensure the proper functioning of the monitor: these are described in
“Regular Maintenance” on page 96.
Chapter 1 General Information 1
Conventions and Symbols Used in this Guide
Conventions and Symbols Used in this Guide
This guide uses the following conventions for notes, cautions, and warnings:
Warning
A warning alerts you to a potential serious outcome, adverse event or safety
hazard. Failure to observe a warning may result in death or serious injury to
the user or patient.
Caution
A caution alerts you to situations where special care is necessary for the safe
and effective use of the product. Failure to observe a caution may result in
minor or moderate personal injury or damage to the product or other
property, and possibly in a remote risk of more serious injury.
Note— A note calls your attention to an important point in the text.
On your monitor, this sign indicates that there is detailed
information in this book and the Instructions For Use which
you must read before proceeding with your task
Equipotential Terminal
This symbol is used to identify terminals which are connected together, bringing various
parts of an equipment or system to the same potential, not necessarily being earth potential
(the value of potentials of earth may be indicated adjacent to the symbol).
Protective Earth Terminal
This symbol identifies the terminal for connection to an external protective earth.
2Chapter 1 General Information
Initial Inspection
Initial Inspection
The monitor and any supporting options ordered are supplied packed in protective
shipping cartons. Before unpacking, visually check the packaging and ensure that there are
no signs of mishandling or damage.
Claims for
Damage
If the shipping cartons show signs of having been mishandled, contact the carrier and
arrange for his agent to make an inspection.
If any of the equipment supplied is damaged, you should contact both the carrier and your
local Philips Medical Service Organization. Arrangements will then be made for repair or
replacement, as appropriate.
RepackingYou are advised to retain the original packing carton and material. You will find it useful if it
becomes necessary to return a piece of equipment to Philips for service. If you need to
repack the equipment but cannot locate the original packing materials, Philips can advise
you on alternatives.
Chapter 1 General Information 3
Overview
Overview
This guide describes three different Series 50 Fetal Monitor models:
!M1351A Single Ultrasound model (with US and Toco channels).
!M1351A Dual Ultrasound Twins model (with US1, Toco and US2 channels).
!M1353A model (with US1, Toco and US2/ECG channels).
The M1351A single and double ultrasound model is for external monitoring of FHR and
uterine activity in the antenatal period from early gestation (approximately 20 to 25 weeks)
to term. The M1353A is for monitoring FHR, including twins, maternal heart rate and
uterine activity. FHR and uterine activity can be monitored externally in the antenatal
period from early gestation to term, and internally throughout labor and delivery. The basic
capabilities of the three models are summarized in the table below.
Table 1-1 Fetal Monitor Parameters
Parameter
M1351A
Single
M1351A
Twin
M1353A
Monitor FHR using ultrasound YesYesYes
Monitor twin FHRs using ultrasound No YesYes
Monitor twins using DECG and ultrasound No No Yes
Monitor FHR using DECG No No Yes
Monitor uterine activity using Toco extYesYesYes
Monitor IUP No No Yes
Monitor maternal heart rate NoNoYes
Detect fetal movements
1
YesYesYes
Mark events YesYesYes
Record nursing notes
1
Transmission of fetal trace information
1
Fetal trace memory
1
YesYesYes
Yes Ye s Yes
Yes YesYes
Interfacing to fetal pulse oximetry Yes Yes Yes
1. May be ordered as an option for all models
4Chapter 1 General Information
Major Keys and Parts at a Glance
Major Keys an d Parts at a Glance
Figure 1-1 General Layout of the Series 50 A and Series 50 IP-2 Fetal
Monitors
Chapter 1 General Information 5
Major Keys and Parts at a Glance
10. Recorder on/off key
11. Event marker key (Alert acknowledge key)
12. Paper advance key
13. Loudspeaker
14. Battery compartment
15. Paper table
16. Service socket
17. Series 50 A: US2 Socket (not present on Single Ultrasound model)
18. Toco socket
19. Series 50 A: Single Ultrasound Model: US Socket
20. Socket for remote event marker
21. Lock-release button
22. Combined interface module
23. Integrated carrying handle
24. Cable clamp
1. Mains socket
2. Monitor on/off switch
3. Equipotential grounding point
4. Monitor on/off light
5. Display panel
6. Time and date key
7. Paper speed key
8. Test key
9. Recorder on/off light
Series 50 IP-2: US2/ECG Socket
Double Ultrasound Model: US1 socket
Series 50 IP-2:US1 socket
6Chapter 1 General Information
Monitor Control and Display Panel
Monitor Control and Display Panel
M1351A Single
Ultrasound
Model
M1351A Dual
Ultrasound
Twins Model
Figure 1-2 Layout of the Monitor Control and Display Panel
1.Monitor On/Off Light.
2.Telemetry Indicator. On when the Fetal Telemetry Receiver is connected and
switched on.
3.Function Key. Used to switch FMP and Fetal Alerting on and off.
4.US Display. Shows the FHR detected by the US transducer.
5.US Signal Quality Indicator. Indicates the quality of the signal detected by the US
transducer:
"Green (optimum).
"Yellow (fair to potentially poor).
"Red (unacceptable).
6.US Speaker Light. On when you are hearing the US heartbeat.
7.US Volume Keys. Sets the volume and selects the US heartbeat.
8.Toco Display. Shows uterine activity.
9.Toco Baseline Key. Zeroes the Toco display and trace to 20 units.
1.Monitor On/Off Light.
2.Telemetry Indicator. On when the Fetal Telemetry Receiver is connected and
switched on.
3.Function Key. Used to switch Twins Offset, FMP, and Fetal Alerting on and off.
4.US1 Display. Shows the FHR detected by the US1 transducer.
Chapter 1 General Information 7
Monitor Control and Display Panel
5.US1 Signal Quality Indicator. Indicates the quality of the signal detected by the US1
transducer.
6.US1 Speaker Light. On when you are hearing the US1 heartbeat.
7.US1 Volume Keys. Sets the volume and selects the US1 heartbeat.
8.Toco Display. Shows uterine activity.
9.Toco Baseline Key. Zeroes the Toco display and trace to 20 units.
10. US2 Display. Shows the FHR detected by the US2 transducer.
11. US2 Signal Quality Indicator. Indicates the quality of the signal detected by the US2
transducer.
12. US2 Speaker Light. On when you are hearing the US2 heartbeat.
13. US2 Volume Keys. Sets the volume and selects the US2 heartbeat.
M1353A Model 1.Monitor On/Off Light.
2.Telemetry Indicator. On when the Fetal Telemetry Receiver is connected and
switched on.
3.Function Key. Used to switch Twins Offset, Logic, FMP, and Fetal Alerting on and
off.
4.US Display. Shows the FHR detected by the US transducer.
5.US1 Signal Quality Indicator. Indicates the quality of the signal detected by the US1
transducer:
6.US1 Speaker Light. On when you are hearing the US1 heartbeat.
7.US1 Volume Keys. Sets the volume and selects the US1 heartbeat.
8.Toco Display. Shows uterine activity.
9.Toco Baseline Key. Zeroes the Toco display and trace to 20 units (when monitoring
externally) or 0 units (when monitoring internally).
10. US2/ECG Display. Shows the FHR detected by the ECG transducer.
11. US2/ECG Signal Quality Indicator. Indicates the quality of the signal detected by the
ECG transducer.
12. US2/ECG Speaker Light. On when you are hearing the ECG heartbeat.
13. US2/ECG Volume Keys. Sets the volume and selects the ECG heartbeat.
8Chapter 1 General Information
Accessories
Accessories
Series 50 A
(M1351A)
The following accessories are supplied as standard with the Monitor:
!One external Toco transducer (M1355-60011).
!One ultrasound transducer (M1356-60011) (or two with the Dual Ultrasound
Model).
!Two reusable transducer belts (M1562A) (or three with Dual Ultrasound Model).
Modem Interface Module allows the transmission of fetal
J15
1
Series 50 A
trace data from a Series 50 A to a receiver (e.g., an OB
TraceVue system)
Fetal Movement ProfileC02Series 50 A and Series 50 IP
IUP Pressure Transducer (CPJ840J5)C07Series 50 IP
Disposable IUP Catheter. This includes 1 x box M1333A
C08
2
Series 50 IP
(containing 10 catheters) disposable intrauterine sensor-tip
pressure catheters and M1334A reusable connector cable
1. Options J10, J13, J14 and J15 cannot be fitted at the same time
2. Not available in all countries.
Chapter 1 General Information 11
Accessories
AccessoriesOptionModel
Service and Installation Guide0B3Series 50 A and
Series 50 IP
Installation and Operating Guide Video
•VHS ⁄ NTSC
0B5 Series 50 A and
Series 50 IP
•VHS ⁄ PAL
Wall mounting kit1AB Series 50 A and
Series 50 IP
Paper take-up tray
1
1ACSeries 50 A and
Series 50 IP
Angled mounting kit1ADSeries 50 A and
Series 50 IP
Mobile cart2AE Series 50 A and
Series 50 IP
1. Not compatible with the wall mounting kit.
12Chapter 1 General Information
Monitor
2
Technical Specifications
Power
Requirements
The monitor is set for the correct voltage at the factory. Before you connect power, however,
ensure that the voltage label shows the correct setting for your country.
Operating Voltage:100V - 120V∼ or 220V - 240V (±10%).
Line Frequency:50 to 60Hz ±5%.
Power Consumption:25VA max.
Battery Type:2 x 1.5V (AA size). Lifetime > 1 year.
EnvironmentThe monitor should be used in an environment which is reasonably free from vibration,
dust, corrosive or explosive gases, extremes of temperature, humidity, etc. It operates within
specifications at ambient temperatures between 0 and 55°C. Ambient temperatures which
exceed these limits can affect the accuracy of the monitor and cause damage to the
components and circuits. Allow at least 5cm (2in) clearance around the monitor for proper
air circulation.
Operating Temp:0 to +55°C (32°F to 131°F).
Storage Temp:-40 to +75°C (-40°F to 167°F), excludes transducers: -40 to
Relative Humidity:5 to 95%.
+60°C (-40°F to +140°F)
Weight and
Height:115mm (4.5in).
Dimensions
Width:340mm (13.4in).
Depth:308mm (12.1in).
We ig ht :5.74kg (12.6lb) (without transducers).
Chapter 2 Technical Specifications 13
Monitor
Displays
Numerical Display M1351A Single
Ultrasound Model:One heart rate display (orange) and one uterine activity display
(green).
M1351A Dual
Ultrasound Twins Model: Two heart rate displays and one uterine activity display.
M1353A Model:Two heart rate displays and one uterine activity display.
Ty pe :7-segment LEDs (10mm).
FHR Range:50 to 240 bpm.
Uterine Activity Range:-99 to +127 relative units.
Instrument Display Telemetry Mode is displayed if Option J10 is fitted and an M2720A Avalon CTS Cordless
Fetal Transducer System or M1310A or 80240A Fetal Telemetry System is connected and
switched on.
M1351A Single
Ultrasound Model:One signal quality indicator.
M1351A Dual
Ultrasound Twins Model: Two signal quality indicators.
M1353A Model:Two signal quality indicators.
InputsM1351A Single
Ultrasound ModelUS socket accepts the M1356A ultrasound transducer. Toco
M1351A Dual
Ultrasound Twins Model US1 and US2 sockets accept M1356A ultrasound transducers.
M1353A ModelUS1 socket accepts the M1356A ultrasound transducer. Toco
socket accepts the M1355A Toco transducer. Socket for the
Remote Event Marker (15249A), and another for servicing. The
monitor automatically selects the correct operating mode.
Toco socket accepts the M1355A Toco transducer. Socket for the
Remote Event Marker (15249A), and another for servicing. The
monitor automatically selects the correct operating mode.
socket accepts the M1355A external Toco or the M1350A/
8040A compatible internal Toco transducer. US2/ECG socket
accepts either the M1356A ultrasound transducer, or the
M1364A DECG/MECG patient module or the M1357A
DECG or the M1359A MECG transducer. There is a socket for
the remote event marker (15249A), and another for servicing.
The monitor automatically selects the correct operating mode.