Siemens SIRECUST 1280 User manual

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SIEMENS
System SIRECUST
SIRECUST 1280/1281 Bedside Monitors
Service Manual
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[_SIRECUST 1281 [SIEMENS ) (SIREM SIEMENS (S'REM SIEMENS )

Copyright © SIEMENS AG 1990
All rights reserved.
Reproduction in any manner, in whole or in part, in English or in other languages, except for brief excerpts in reviews or
scientific papers, is prohibited without prior written permission of SIEMENS AG.
Copyright © SIEMENS AG 1990
Alle Rechte vorbehalten.
Nachdruck, auch auszugsweise oder in Ubersetzung, ist ohne Genehmigung der SIEMENS AG verboten.
Copyright © SIEMENS AG 1990
Droits de reproduction réservés.
Ce document, al’exception de quelques passages pour des revues ou articles scientifiques, ne peut étre reproduit, traduit,
en tout ou partie, que sur autorisation écrit de SIEMENS AG.
Copyright © SIEMENS AG 1990
Es propiedad © SIEMENS AG, 1990
Todos los derechos reservados.
Se prohibe la reproducción en parte o completa en español o en cualquier otra lengua, con excepción de breves pasajes
para reseñar o para documentos científicos, sin previo permiso de Siemens AG.
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System SIRECUST
1280/1281 Bedside Monitor
Service Manual

SIRECUST 1280/1281 BEDSIDE MONITOR - SERVICE MANUAL
TABLE OF CONTENTS
Chapter 1. INTRODUCTION
Chapter 1 contains general information about the monitors and about the manual.
Chapter 2. MONITOR OPERATIONS
Chapter 2 contains brief descriptions of monitor operations, both as a standalone
system and as a sub-system of a SIRENET network.
Chapter 3. INTERNAL MONITOR FUNCTIONS
Chapter 3 details operation of sub-systems within the monitor from a functional block
diagram perspective.
Chapter 4. REMOVING/INSTALLING SYSTEM COMPONENTS
Chapter 4 lists step-by-step procedures for disassembling and reassembling the
monitor, and for removing and installing replaceable components and sub-
assemblies.
Chapter 5. FUNCTIONAL VERIFICATION
Chapter 5 outlines procedures for verifying proper operation of monitors, in
accordance with SIEMENS specifications, and references appropriate service
procedures in the event of a possible malfunction.
Chapter 6. TROUBLESHOOTING
Chapter 6 provides a logical procedure for isolating and identifying causes of
possible malfunctions, and refers service personnel to appropriate Sections in the
Manual for procedures to correct the malfunction.
Chapter 7. CALIBRATION/ADJUSTMENT
Chapter 7 describes recommended procedures for calibrating and adjusting the
monitors circuits to maintain optimum performance of the monitor in accordance with
SIEMENS specifications.
IT,

TABLE OF CONTENTS (Continued)
Appendix A. REPLACEMENT PARTS
Appendix A is a listing of replacement parts, and references assembly drawings to
indicate positioning of the parts within the monitor.
Appendix B. WIRING/SCHEMATIC DIAGRAMS
Appendix B consists of an overall monitor wiring diagram and a set of schematic
diagrams for the printed circuit boards contained within the monitor.
Appendix C. PC BOARD JUMPER SETTINGS
Appendix C consists of a set of drawings which show the positioning of jumpers on
the printed circuit boards.
Appendix D. GLOSSARY OF SIGNALS
Appendix D is a listing of the signals found on each of the printed circuits within the
monitor.
Appendix E. SUPPLEMENTAL INFORMATION
Appendix E contains descriptions of buildable test equipment and a description of
the Self-test ERROR Codes and Messages provided by the monitor. It is also a
place within the Manual for retaining supplemental information that is distributed to
the field from time to time.
Appendix F. FUNCTIONAL VERIFICATION/PERFORMANCE CHECKLISTS
Appendix F contains forms for recording results of periodic maintenance and
functional verification.

CHAPTER 1
INTRODUCTION
TABLE OF CONTENTS
1.1. Service Manual Overview
1.1.1. Structure of the Manual
1.2. Safety Summary ...........................,..,,.,,.....
1.3. SIRECUST 1280/1281 Monitors
1.8.1. General Overview ..................................,...
1.3.2. Alarm Handling ...............................,,,,,...
1.3.8. Monitor Control .......................................
1.3.4. Monochrome vs Color Displays
1.3.5. The SIRENET Network
1.3.6. Standalone Operation
a
1.4. Parameter Cartridges
1.5. Technical Data... ，
1.6. Maintenance Recommendations
1.6.1. Cleaning and Disinfecting ....................,............
1.6.2. Optimizing Monitor Performance
LIST OF FIGURES
Figure 1-1: Technical Data .............................,........
Figure 1-1: Technical Data (Continued)

E331.E2501.061.21.02.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
1. INTRODUCTION
1.1. Service Manual Overview
This Manual contains information to
enable qualified service personnel to
service SIRECUST 1280/1281 monitors at
the replaceable module level. In light of
the state-of-the-art technology used in
SIEMENS equipment, proprietary nature
of the software, and specialized equip-
ment required in the replacment of some
individual components, SIEMENS recom-
mends troubleshooting and repair only to
the board or replaceable part level.
Replaceable parts are items that can be
replaced with minimal or no desoldering
of circuit components. Replacement of
components other than those listed in
Appendix A should be performed at
SIEMENS service depots.
1.1.1. Structure of the Manual
The Manual has been structured to facili-
tate rapid and effective servicing of
SIRECUST 1280/1281 monitors.
Chapter 1. Introduction: provides
general information about the monitors
and about the manual.
Chapter 2. Monitor Operations: contains
brief descriptions of monitor operations,
both as a standalone system and a sub-
system of a SIRENET network.
Chapter 3. Internal Monitor Functions:
details operation of sub-systems within
the monitor from a functional block
diagram perspective.
Chapter 4. Removing/Installing System
Components: lists step-by-step proce-
dures for disassembling and reassembling
the monitor, and for removing and install-
ing replaceable parts and sub-systems.
Chapter 5. Functional Verification:
outlines procedures for verifying proper
operation of monitors, in accordance with
SIEMENS specifications, and references
appropriate service procedures in the
event of a possible malfunction.
Chapter 6. Troubleshooting: provides a
logical procedure for isolating and
identifying causes of possible mal-
functions, and refers service personnel to
appropriate Sections in the Manual for
procedures to correct the malfunction
Chapter 7. Calibration/Adjustment:
describes recommended procedures for
maintaining optimum performance of the
monitor.
Appendix A. Replacement Parts List
Appendix B. Wiring/Schematic Diagrams
Appendix C. PC Board Jumper Settings
Appendix D. Glossary of Signals
Appendix E. Supplemental Information
Functional Verification/
Performance Checklists
Appendix F.
1.2. Safety Summary
CAUTION statements identify conditions
Or practices that can result in damage to
equipment or other property.
CAUTION: Printed circuit boards in this
monitor contain components which are
easily damaged by Static-electricity. Open
the monitor only in a static-protected
environment. Observe proper servicing
procedures to prevent damage to the
equipment resulting from static discharge.
WARNING statements identify conditions
or practices that can result in personal
injury.
WARNING: Do not operate this product
in the presence of flammable gasses or
liquids. If this device is used where
flammable anesthetics, skin cleansers, or
disinfectants are employed, the possibility
of an explosion cannot be excluded. This
Page 1-1

ЕЗЗТ.Е2501.001.21.0=.Ое
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
product must be operated only in strict
conformance with local fire prevention
regulations.
1.3. SIRECUST 1280/1281 Monitors
1.3.1. General Overview
SIRECUST 1280 and 1281 units are eight-
channel bedside patient monitors having
12" screens that incorporate two different
display technigues for presentation of
waveforms and alphanumerics. An XY-Z
display function draws waveforms as
continuous lines, while a conventional
raster mode produces letters, symbols,
and graphics. Through the use of indiv-
idual cartridges designed to convert
human physiological vital signs into
electrical signals, the monitors acquire,
process, display, store and transmit a
variety of waveforms, measured values
and derived patient parameters. Up to
eight physiological waveforms and twenty-
one calculated parameters can be
displayed simultaneously.
1.3.2. Alarm Handling
The monitor provides audible and visual
alarm indications. An alarm condition
exists whenever a parameter value is
outside a defined range, and for specific
technical situations such as loss of
electrode contact with a patient or the
occurrence of artifact in a monitored
signal. The three audible alarm levels are:
Advisory - low frequency tone
Serious - high frequency
tone
Life-threatening - distinctive two tone
In a multi-bedside environment, the
variable alarm tone makes it possible to
differentiate among the different alarm
grades. Two different keys are available
for handling audible alarms: one key
silences an individual alarm and another
suspends all alarms.
1.3.3. Monitor Control
A state-of-the-art TouchScreen User Inter- .
face with menu-driven function selection
controls the many functions of the
monitor. At the bedside, operating
commands are entered through the
TouchScreen in the form of specific KEY
sequences.
The TouchScreen contains both fixed
keys and program keys. Fixed keys are
defined for essential functions that must
always be quickly accessible. Specific
program keys appear on the screen
depending on the function involved. All
functions are menu driven. Monitor opera-
tions can also be controlled from a
central station if the monitor is connected
into a SIRENET network.
Refer to the System SIRECUST 1280/1281
Bedside Patient Vital Signs Monitor Oper-
ating instructions for the installed software
version, Order No. A91004-M3331-L079-
XX-7600, for a detailed description of
monitor operations and key seguences.
Monochrome vs Color
Displays
1.3.4.
SIRECUST 1280 and 1281 monitors differ
only in the color capability for displaying
waveforms. The “1" in 1281 designates a
multi-color display capability. A liquid
crystal shutter in front of the monochrome
CRT, enables SIRECUST 1281 monitors
to display waveforms in four (4) colors --
red, green, yellow and orange.
SIRECUST 1280 monitors display
waveforms only in yellow-green.
1.3.5, The SIRENET Network
As part of a centralized patient monitoring
system, SIRECUST 1280/1281 bedside
units can be connected to a central
station and SIREDOC recorders via a high
speed communication link, the SIRENET
network. Within the SIRENET network,
each device is interconnected to all other
devices in the network.

E331.E2501.061.21.02.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
1.3.6. Standalone Operation
Beginning with software version VEO, the
bedside monitor can directly initiate
SIREDOC recordings without being
connected into the SIRENET and a
central station. Up to two SIREDOC
recorders (S60 and/or S220) can be
connected to a standalone bedside
monitor.
1.4. Parameter Cartridges
Monitors have been designed to support
up to two remote cartridge units, called
SIREMs, each of which can accommodate
up to four (4) physiological parameter
cartridges. Patient data are digitized
inside the cartridges, and then transmitted
to the SIREM via infrared signals through
"windows" in the back plates of the
cartridges. The small compact size of a
SIREM allows it to be placed close to the
patient, while the monitor is mounted
elsewhere at a more convenient location
for easy accessibility by the nurse or
other staff members. Refer to the Operat-
ing Instructions (see Section 1.3.3) for a
description of all patient parameter
cartridges.
NOTE: Software versions up to and
including VEO support only 1 SIREM in a
single monitor.
1.5. Technical Data
Refer to Figure 1-1 for technical data
pertaining to System SIRECUST 1280
monochrome and 1281 color monitors.
Line Voltage Requirements
Power Consumption
(including 1 SIREM configured with
1 LIM cartridge, 1 Pressure cartridge,
and 1 pCO, cartridge)
Protective Class
Leakage current (housing)
Operating Temperature
Relative Humidity
TECHNICAL DATA: SIRECUST 1280/1281 MONITORS
90 to 132 VAC or 180 to 264 VAC, @ 48 to 62 Hz
155 W, SIRECUST 1280 (monochrome)
175 W, SIRECUST 1281 (color)
VDE 0750 Class 1, IEC 601-1 Class CF, UL544,
CSA 22.2 number 125
<100 uA @ 121 VAC 60 Hz (in accordance with UL544);
<500 uA © 242 VAC 50 Hz (in accordance with IEC 601-1)
Operation:+10°C to +40°C
Storage:-40°C to +75°C
Cooling Convection (no fan)
Operation: 30% < R.H. < 95%
Storage: 10% < R.H. < 100%
Color Housing: gray-white.
Front panel: gray-brown.
Rear: silver-metallic
Dimensions 10.5 in (266 mm) H x
17.25 in (439 mm) W x
14.25 in (860 mm) D
Weight 36 lb. (16.5 kg)
Figure 1-1: Technical Data
Page 1 - 3

E331 .E2501 .061.21.02.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
TECHNICAL DATA: SIRECUST 1280/1281 (Continued)
General Display Functions
Display Screen Size
Deflection Speed
Depiction mode
Trend
Brightness
SIRECUST 1280 - Monochrome display
Raster Resolution
X-Y Resolution/channel
Bandwidth
Depiction color
SIRECUST 1281 - Color Display
Raster Resolution
X-Y Vertical Resolution/channel
Bandwidth
Depiction Colors
12 in (30 mm) diagonal, 9 in (233 mm) x 7 in (170 mm) usable area
6.25, 12.5, 25, and 50 mm/s
“paper mode”
4 pages; up to 23 different parameters over 24 hours
Manually adjustable, automatic adjustment to ambient lighting
600 x 400 pixels
1920 pixels (horizontal) x 2040 pixels (vertical)
100 HZ at 13 mm, 50 mm/s
Yellow-green
480 x 320 pixels
1920 pixels (horizontal) x 2040 pixels (vertical)
100 HZ for curves 1 and 2, at 14 mm amplitude and 50 mm/s;
50 Hz for curves 3 thru 8, at 50 mm/s
Red, green, yellow, and orange
Figure 1-1: Technical Data (Continued)
1.6. Maintenance Recommendations
1.6.1. Cleaning and Disinfecting
Refer to the Operating instructions,
SIEMENS Order No. A91004-M3331-L079-
XX-7600 for recommendations regarding
regular cleaning and disinfecting.
1.6.2. Optimizing Monitor
Performance
To assure optimum performance of
SIRECUST 1280/1281 monitors, SIEMENS
recommends that a complete operational
check be performed annually. Follow the
procedures of Chapter 5, Functional Veri-
fication, and Chapter 7, Calibration/
Adjustment, Sections 7.1 and 7.2. Record
results on the form provided in
Appendix F.
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