201681 Rev.

B
Table of Contents
1 - Introduction ............................................................................................................ 1-3
Copyright Notice ........................................................................................................... 1-3
Trademarks ................................................................................................................... 1-3
Restricted Sale .............................................................................................................. 1-3
Disclaimer ..................................................................................................................... 1-3
Address / Telephone ..................................................................................................... 1-4
Applicability ................................................................................................................... 1-4
Purpose ......................................................................................................................... 1-4
Important Safety Notice ................................................................................................ 1-4
Intended Use ................................................................................................................. 1-4
Certifications ................................................................................................................. 1-4
Symbols and Descriptions ............................................................................................ 1-5
WARNINGS ................................................................................................................ 1-12
CAUTIONS ................................................................................................................. 1-13

2 - Maintenance and Checkout ................................................................................ 2-15

Recommended Maintenance Schedule ...................................................................... 2-15
MEDRAD Service ....................................................................................................... 2-15
Inspection Procedures ................................................................................................ 2-16
Single and Dual Head .......................................................................................... 2-16
Syringe Heat Maintainer ...................................................................................... 2-16
Display and Base ................................................................................................. 2-16
Wall Bracket ......................................................................................................... 2-16
Adjustable Height Pedestal .................................................................................. 2-17
CS Mounting Systems ......................................................................................... 2-17
ISI ........................................................................................................................ 2-17
Electrical Leakage Check ........................................................................................... 2-18
Ground Continuity Check ............................................................................................ 2-18
Cleaning and Operational Checkout ........................................................................... 2-18
System Labels ............................................................................................................ 2-19
Power Up .................................................................................................................... 2-19
Programming .............................................................................................................. 2-19

3 - Troubleshooting .................................................................................................. 3-21

System Malfunction Codes ......................................................................................... 3-21
General Troubleshooting Guidelines .......................................................................... 3-21
System Messages ....................................................................................................... 3-22
Type 1 Messages ................................................................................................ 3-22
Type 2 Messages ................................................................................................ 3-22
Type 3 Messages ................................................................................................ 3-23
White Screen/System Lock Up Condition ................................................................... 3-24
Listing of Type 3 Errors ............................................................................................... 3-24

4 - Theory of Operation ............................................................................................ 4-33

Single Head Interconnect Drawing ............................................................................. 4-34
Dual Head Interconnect Drawing ................................................................................ 4-36

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 MEDRAD Stellant CT Injection System

Display Unit ................................................................................................................. 4-38

Display - Block Diagram Description ........................................................................... 4-38
Display Top Block Diagram ......................................................................................... 4-40
PCMCIA Block Diagram .............................................................................................. 4-41
Base Unit - Block Diagram Description ....................................................................... 4-42
Three Phase Motor Function Operation ...................................................................... 4-42
Base Unit Block Diagram ............................................................................................ 4-44
Single Head Block Diagram Description ..................................................................... 4-45
Power Drive Card - Block Diagram Description .......................................................... 4-47
Single Head Block Diagram ........................................................................................ 4-48
Dual Head Block Diagram ........................................................................................... 4-49
Cable Wiring Pin Out Diagrams .................................................................................. 4-50

5 - Disassembly / Assembly & Replacement Parts ................................................ 5-51

Parts List Components ................................................................................................ 5-51
Symbols Guide ............................................................................................................ 5-52
Drawings ..................................................................................................................... 5-52
Display ................................................................................................................. 5-53
Base ..................................................................................................................... 5-65
Single Head ......................................................................................................... 5-74
Dual Head ............................................................................................................ 5-96
ISI 800 ............................................................................................................... 5-119
ISI 700 ............................................................................................................... 5-121
Pedestal ............................................................................................................. 5-123
Miscellaneous Replacement Parts ............................................................................ 5-124

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 1 - Introduction

1 - Introduction
Copyright Notice Copyright 2006 by MEDRAD, INC.. All rights reserved. No part of this manual may be
reproduced in any form without prior written permission of MEDRAD. Printed and assembled in
the U.S.A.

Trademarks MEDRAD Stellant CT®, Qwik-Fit Syringe ®, FluiDot ®, Quality for Life ®, and MEDRAD ® are
registered trademarks of MEDRAD, INC.

Restricted Sale Federal (U.S.A.) law restricts the sale of this device on or by the order of a physician.
Disclaimers
MEDRAD makes no warranties on the contents of this manual, and specifically disclaims any
implied warranties of merchantability or fitness for any purpose.
MEDRAD reserves the right to change specifications and the contents of this manual without
obligation.

Disclaimer External wiring modification disclaimer: MEDRAD disclaims liability for any modifications or
interfaces with other equipment which are not in conformity with the specifications and
information contained within this manual. Such unauthorized action could jeopardize injector
operation, safety, or reliability.
Accessory equipment connected to the MEDRAD Stellant CT Injector must be certified
according to IEC 60601-1 standards. Furthermore, all configurations shall comply with the
system standard IEC 60601-1-1. Anyone who connects additional equipment to the signal
input or output, configures a medical system, and is therefore responsible that the system
complies with the requirements of the system standard IEC 60601-1-1. To obtain on-site
consulting or consulting references, contact MEDRAD Service.
All drawings in this manual are for reference purposes only, and may not reflect the
construction of units produced prior to the publication of this manual. Reproduction quality of
these drawings may have been effected by the level of reduction required. Call MEDRAD
Service if assistance in drawing interpretation is required.
The Stellant CT Injector is not for portable use.

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 MEDRAD Stellant CT Injection System

Address / Telephone If you experience problems with the MEDRAD Stellant CT System, contact your MEDRAD
authorized dealer or:

MEDRAD, INC. MEDRAD Europe B.V. Nihon MEDRAD KK

One Medrad Drive Postbus 205 9F Central Shin-Osaka Building
Indianola, Pa 15051-0780 6190 AE Beek 4-5-36, Miyahara, Yodogawa-ku
U.S.A The Netherlands Osaka, 532-0003
Phone: 412 767-2400 Phone: +31(0)43-3585601 Japan
Fax: 412-767-4128 Fax: +31(0)43-3656598 Phone: +81-6-6350-0680
Fax: +81-6-6398-0670

Applicability This manual applies to the MEDRAD Stellant CT Injection System.

Purpose The purpose of this manual is intended to provide instructions for servicing the MEDRAD
Stellant CT Injection System safely and accurately. It is intended for those qualified to service
the injection system, whether they be MEDRAD Service Personnel, Certified Laboratory
Service Technicians or MEDRAD authorized international dealers.

Important Safety The information in this manual is intended for people with adequate backgrounds and
Notice experience in electronics and electromechanical devices. Any attempt to repair a sophisticated
medical device such as the injector may result in personal injury, property damage, or patient
injury.

Intended Use Refer to the Stellant CT Injection System operation manual.

Certifications MEDRAD Stellant CT Injection Systems are equipped to operate at 100 - 240 VAC, 50/60 Hz,
and designed to be in compliance with EN 60601 -1 (Safety), and EN 60601-1-2 (EMC/
Emissions).

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 1 - Introduction

Symbols and The following international symbols are used on the MEDRAD Stellant CT Injector and
Descriptions throughout this manual.

Attention, consult accompanying instructions.

Indicates that this device conforms to the requirements of the European Medical Device
Directive 93/42/EEC.

Indicates on/off switch for the Control Room Unit.

Indicates hazardous voltages.

Indicates alternating current.

Identifies a type BF applied part complying with EN 60601-1 standards.

Indicates the injection system is Class 1 medical equipment as defined by EN 60601-1

standards.

Identifies the degree of protection against fluid as drip proof.

Identifies connection of the handswitch.

Forward and Reverse Piston Controls.

Identifies the direction of manual knob rotation relative to plunger movement.

Identifies the ENABLE key.

Indicates the AIR EXPELLED button on the injector head. When illuminated yellow on the
touch screen, also indicates that the operator has acknowledged inspecting the fluid path for
air.

Identifies the Equipotential connection.

Identifies the Earth Ground point.

Identifies the Service Connection Port.

Indicates design for indoor use only.

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 MEDRAD Stellant CT Injection System

Indicates the presence of no serviceable parts.

Identifies the Control Room Unit brightness controls.

Indicates the Protocol Lock is engaged.

Start / Hold.

Stop.

Reset.

Help.

Setup.

Labels on the system or statements in this manual preceeded by any of the following words
and/or symbols are of special significance, intended to help you to operate the system in a safe
and successful manner:

Protocol is unlocked or unengaged.

Phase View.

Profile Preview.

Pressure Graph View.

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 1 - Introduction

ISI Symbols

Indicates scanner hookup.

Indicates DC power.

Indicates injector hookup.

Identifies the CAN Interface TRANSMIT LED.

Identifies the CAN Interface RECEIVE LED.

Identifies the Ethernet LINK LED.

Identifies the Ethernet ACTIVITY LED.

DO NOT dispose of in municipal waste. Wheeled bin symbol indicates separate collection for
electrical and electronic equipment. (WEEE Directive 2002/96/EEC).

Symbols on the Power Switch: I - On

O - Off

The following icons may appear on the injector screen when using ISI 700:
The user is not able to arm the injector. The injector is configured for ISI, and it is
communicating to the ISI module. The injector and ISI module are functional, but the scanner
signals are in a state that will NOT allow arming the injector.
The injector is configured for ISI and it is communicating to the ISI module. The scanner
signals are in a state that will allow arming the injector.

Communication is lost between the injector and the ISI module.

OR
The ISI module is in need of repair. Refer to the ISI System Messages section of this manual.

The following icons may appear on the injector screen when using ISI 800:

(No Highlight) Indicates that communication between the injector and the MEDRAD ISI 800
Module has been established.

(Highlighted in Yellow) Indicates that communication between the Injector and the scanner has
been established.

(No Highlight) Indicates that communication has been lost between the injector and the
MEDRAD ISI 800 Module. The MEDRAD ISI 800 Module may be in need of repair. Refer to the
ISI 800 System Messages section of this manual.

(Highlighted in Yellow) Indicates that the injector is working in conjunction with the scanner
("coupled"). This symbol will only appear on the screen when the system is in Control or
Tracking modes.

(No Highlight) Indicates whether or not the injection protocol has been locked. When this icon
is highlighted in yellow, the protocol has been locked.

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 MEDRAD Stellant CT Injection System

NOTE: The configurations below are determined by the scanner manufacturer. Refer to the
scanner manufacturer instructions for further information.

Indicates that the injector will request the initiation of a procedure. When either or both system
symbol is gray, that system is not ready and the injection will not proceed. When both symbols
are highlighted in yellow, both systems are ready and the injection can proceed.

Indicates that the scanner will request the initiation of a procedure. The Start Button has been
locked out on the Injector. When either or both system symbol is gray, that system is not ready
and the injection will not proceed. When both symbols are highlighted in yellow, both systems
are ready and the injection can proceed.

Indicates that the procedure request can be initiated from EITHER the scanner or the injector.
When either or both system symbol is grayed out, that system is not ready and the injection will
not proceed. When both symbols are highlighted in yellow, both systems are ready and the
injection can proceed.

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 1 - Introduction

Additional Information Regarding Compliance to IEC 60601-1-2 / 2001 2nd Edition

This section is intended to reflect conformance to IEC-60601-1-2 / 2001 2nd edition Standards.

CAUTIONS
The following statements are cautions. Cautions advise of circumstances that could result in damage to the device.
Read and understand these cautions before operating the injector system.

Injector may disarm or fail to operate when exposed to high magnetic fields. Portable and mobile RF communications
equipment can affect the injector.

FOR PROPER OPERATION, use only accessories and options provided by MEDRAD that are designed specifically for
the injector system. Other non-MEDRAD approved accessories or options may cause equipment damage or may result in
increased emissions or decreased immunity of the injector system. Injector system accessories listed in it’s operation manual
comply with the requirements of electromagnetic emissions and immunity standards IEC-60601-1-2 / 2001 2nd edition.

DO NOT USE INJECTOR ADJACENT TO OR STACKED WITH OTHER EQUIPMENT. If adjacent or stacked use is necessary,
the injector should be observed to verify normal operation in the configuration in which it will be used.

Recommended separation distances between

portable and mobile RF communications equipment and the injector
The injector is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the
user of the injector can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the injector as recommended below, according to the maximum output power of the
communications equipment.

Rated maximum output power Separation distance according to frequency of transmitter

of transmitter m
W
150 KHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2.5 GHz
d = [3.5/V1] p d = [3.5/E1] p d = [7/E1] p

0.01 0.12 0.12 0.23

0.1 0.37 0.37 0.74

1 1.17 1.17 2.33

10 3.69 3.69 7.38

100 11.67 11.67 23.33

For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters (m) can be estimated
using the equation applicable to the frequency of the transmitter, where p is the maximum output power rating of the transmitter in watts (W)
according to the transmitter manufacturer.

NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency applies.

NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects and people.

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 MEDRAD Stellant CT Injection System

INJECTOR REQUIRES SPECIAL PRECAUTIONS REGARDING EMC. Install and put into service according to the EMC
information provided below:

Guidance and manufacturer's declaration - electromagnetic emissions

The injector is intended for use in the electromagnetic environment specified below. The customer or user of the injector should assure that it is
used in such an environment.
Emissions test Compliance Electromagnetic environment - guidance
RF emissions Group 1 The injector uses RF energy only for its internal function. Therefore,
CISPR 11 its RF emissions are very low and are not likely to cause any
interference in nearby electronic equipment.
RF emissions Class B The injector is suitable for use in all establishments, including
CISPR 11 Stellant domestic establishments and those directly connected to the public
Harmonic emissions Class B low-voltage power supply network that supplies buildings used for
IEC 61000-3-2 Stellant domestic purposes.
Voltage fluctuations/flicker Complies
emissions
IEC 61000-3-3

Guidance and manufacturer's declaration - electromagnetic immunity

The injector is intended for use in the electromagnetic environment specified below. The customer or user of the injector should assure that it is
used in such an environment.
Immunity test IEC 60601 test level Compliance level Electromagnetic environment - guidance
Electrostatic discharge +6 kV contact +6 kV contact Floors should be wood, concrete or ceramic tile. If
(ESD) +8 kV air +8 kV air floors are covered with a synthetic material, the
IEC 61000-4-2 relative humidity should be at least 30%.
Electrical/fast transient/ +2 kV for power supply lines +2 kV for power supply lines Mains power quality should be that of a typical
burst +1 kV for input/output lines +1 kV for input/output lines commercial or hospital environment.
IEC 61000-4-4
Surge +1 kV differential mode +1 kV differential mode Mains power quality should be that of a typical
IEC 61000-4-5 +2 kV common mode +2 kV common mode commercial or hospital environment.
Voltage dips, short <5% UT <5% UT Mains power quality should be that of a typical
interruptions and voltage (>95% dip in UT) (>95% dip in UT) commercial or hospital environment. If the user of
variations on power for 0.5 cycle for 0.5 cycle the injector requires continuous operation during
supply input lines power mains interruptions, it is recommended the
IEC 61000-4-11 40% UT 40% UT injector be powered from an uninterruptible power
supply or battery.
(60% dip in UT) (60% dip in UT)
for 5 cycles for 5 cycles

70% UT 70% UT
(30% dip in UT) (30% dip in UT)
for 25 cycles for 25 cycles

<5% UT <5% UT
(>95% dip in UT) (>95% dip in UT)
for 5 sec for 5 sec
Power frequency 3 A/m 3 A/m Power frequency magnetic fields should be at levels
(50/60 Hz) characteristic of a typical location in a typical
magnetic field commercial or hospital environment.
IEC 61000-4-8
NOTE UT is the a.c. mains voltage prior to application of the test level.

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 1 - Introduction

Guidance and manufacturer's declaration - electromagnetic immunity

The injector is intended for use in the electromagnetic environment specified below. The customer or user of the injector should assure that it is
used in such an environment.
Immunity test IEC 60601 test level Compliance level Electromagnetic environment - guidance
Portable and mobile RF communications equipment
should be used no closer to any part of the injector,
including cables, than the recommended separation
distance calculated from the equation applicable to
the frequency of the transmitter.
Recommended separation distance
Conducted RF 3 V rms 3 V rms d = 1.17 p
IEC-61000-4-6 150 kHz to 80 MHz
Radiated RF 3 V/m 3 V/m d = 1.17 p 80 MHz to 800 MHz
IEC 61000-4-3 80 MHz to 2.5 GHz
d = 2.33 p 800 MHz to 2.5 GHz

Where p is the maximum output power rating of the

transmitter in watts (W) according to the transmitter
manufacturer and d is the recommended separation
distance in meters (m).

Field strengths from fixed RF transmitters, as

determined by an electromagnetic site survey,a
should be less than the compliance level in each
frequency range.b

Interference may occur in the vicinity of equipment

marked with the following symbol:

NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.

NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects and people.
a Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur
radio, AM and FM radio broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF
transmitters, an electromagnetic site survey should be considered. If the measured field strength in the location in which the injector is used
exceeds the applicable RF compliance level above, the injector should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as reorienting or relocating the injector.

b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.

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 MEDRAD Stellant CT Injection System

Introduction to Warnings and Cautions

This manual contains important information about safe servicing of the MEDRAD Stellant CT
Injection System.
MEDRAD urges the service technician to read this manual carefully, become familiar with the
procedures and system functions that it describes, and follow its recommendations to assure
proper servicing of the system.
Warning labels on the MEDRAD Stellant CT system or Warning statements in this manual
preceeded by any of the following words and/or symbols are of special significance:
WARNING: Indicates a potentially hazardous situation. If not avoided, this could result in
death or serious injury.

WARNING: Indicates electrical hazards which could result in death or serious injury.

CAUTION: Indicates potential hazards or unsafe practices which could cause product,
system, or property damage.

NOTE: Indicates helpful information is being offered.

WARNINGS Injury may result from exposure to hazardous voltages existing within the system. The
system should be opened and serviced by qualified service personnel only. Disconnect the
system from line power before cleaning or attempting to perform any maintenance.

Explosion hazard in the presence of flammables. Do not use the system in the presence
of anesthetic gases and equipment.

Patient or operator injury can occur from use of worn power cords or control cables.
Examine power cords and cables for cuts, frays, or any other visible damage. Do not use the
system if any of the cords or cables show signs of damage. Any damaged or worn connection
cables or power cords should be replaced.

Unsafe operation may result from using improper accessories and replacement parts.
Use only accessories, options, and parts designed for this system, and provided by MEDRAD.

Fire hazard: to avoid an electrical fire, assure the correct type of fuse is used for
replacement. The fuse must be replaced with type T, 250V, 3.15 A fuse by qualified personnel
only.

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 1 - Introduction

CAUTIONS Damage may occur as a result of failure to follow electrostatic discharge (ESD)
protection practices. ESD protection practices must be followed when servicing any
component of this system.

Damage can occur as a result of incorrect voltages. Check the voltage and frequency
marked on the back of the Power Supply. Ensure that the outlet providing power to the injector
supplies a voltage, frequency, and volt-ampere rating within the range specified on the unit.

Environmental damage may result from improper disposal of system components or

accessories. Electronic assemblies contain potentially hazardous materials. Follow all local
regulations for the recycling or disposal of electronic assemblies, or contact MEDRAD Service
for assistance.

Damage can occur as a result of abrupt interruption or application of supplies. To avoid

damage to sensitive circuits on the boards, disconnect the power cord before removing or
replacing PC boards.

Allow system temperature to stabilize before use. To avoid damage to sensitive electronic
circuits, allow the system to stabilize to room temperature before servicing when exposed to
extreme temperature changes.

Perform regular preventive maintenance. To ensure that your MEDRAD Stellant CT System
remains properly calibrated, and that all primary and backup circuits are functioning properly,
regular preventive maintenance is recommended. An annual preventive maintenance package
is not included in the new machine warranty. Contact your local MEDRAD Service
Representative for details.

Damage may result from improper or careless cleaning methods. While cleaning any
outside portion of the system, avoid allowing any water to seep inside system components.

NOTE: All relevant guidelines for institutional, local, or national safety recommendations
related to cable routing and installation should be followed.

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 MEDRAD Stellant CT Injection System

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 2 - Maintenance and Checkout

2 - Maintenance and Checkout

This section contains recommended procedures for maintenance, and an operational checkout
of the MEDRAD Stellant CT Injection System. Routine maintenance and inspection will:

• Ensure continued performance of the injection system

• Reduce the possibility of equipment malfunction

Recommended Your MEDRAD Stellant CT Injection System must be properly maintained to ensure that it is in
Maintenance Schedule peak operating condition. Your individual maintenance system and schedule depends upon
how your injection system is used, the type of procedures performed, and frequency of use.
The following maintenance schedule is recommended for the system:

Daily:
The piston rod or rods should be thoroughly cleaned after each use. Before use each day, the
system should be cleaned and inspected, using the procedures outlined in this section. Ensure
that all system safety and warning labels are in place and are legible.

Monthly:
Once a month, the entire system should be thoroughly inspected and cleaned, and an
Operational Checkout should be performed.

Annually:
As part of an annual maintenance program performed by a qualified MEDRAD Service
Representative or authorized dealer, both Electrical Leakage and Ground Continuity checks
should be performed.

NOTE: Local regulations or hospital protocol may require electrical leakage checks at more
frequent intervals. If this applies, local regulations for leakage must be followed.

MEDRAD also recommends that a complete system calibration and performance checkout be
performed annually. Contact MEDRAD Factory Service, or your local MEDRAD office for
complete details.

In the United States, Canada, Japan, and Europe, the MEDRAD Service Department offers
Preventive Maintenance Programs. These annual programs greatly assist in maintaining
accuracy and reliability, and can also extend the life of the system. Contact MEDRAD for
details. In Europe, contact your local MEDRAD office or your local authorized dealer for further
information. Refer to the back of the title page of this manual for address, telephone and FAX
information.

NOTE: Failures which occur due to lack of proper maintenance will not be covered under
warranty.

MEDRAD Service MEDRAD Service will make available upon request:

• Circuit diagrams, component parts lists, or other information that will assist qualified
technicians to repair components classified as repairable.
• On site consulting upon request

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 MEDRAD Stellant CT Injection System

Inspection Procedures The following procedures are recommended for daily inspection of all components in the
MEDRAD Stellant CT Injection System. If any defects are detected, either repair the system, or
call MEDRAD for service. Do not use the system until the problem is corrected.

Single and Dual Head 1. Inspect the housing for any damage or cracks that could allow fluid to leak inside, or
weaken the structural integrity of the unit.
2. Inspect all cables connected to the unit: Look for cuts, cracks, worn spots or other obvious
damage to the cables. Ensure that all connectors are properly seated.
3. Inspect for contrast media build-up in the syringe interface area. Follow the cleaning
guidelines outlined in this section.
4. Ensure that all mounting bolts and screws are secure.
5. Inspect the pivot points. The head and support arm must pivot freely.
6. Ensure that the keypad is clean and free of cracks.

NOTE: All relevant guidelines for institutional, local, or national safety recommendations
related to cable routing and installation should be followed.

Syringe Heat 1. Ensure that the device is warm to the touch while attached to the head.
Maintainer 2. Ensure that the LED indicator is not illuminated or flashing.
3. Inspect the cable and conncector for cracks, worn areas, or other obvious damage.
4. Ensure the heater has extension cable attached P/N 3013737.

Display and Base 1. Inspect all cables connected to the unit: Look for cuts, cracks, or worn spots, or other
obvious damage. Ensure that all connectors are properly seated.
2. Inspect the housing for any damage or cracks that could allow fluid to leak inside, or
weaken the structural integrity of the unit.

Wall Bracket 1. Inspect all parts of the bracket for cracks and other defects that would weaken the
assembly.
2. Ensure that the bracket is securely attached to the wall.
3. Ensure that all cables are secured to the display control unit and do not interfere with the
movement of the mounting bracket.

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 2 - Maintenance and Checkout

Adjustable Height 1. Inspect the stand, base and support arm for cracks and other defects that could weaken
Pedestal the structure.
2. Ensure all mounting bolts and screws are secure.
3. Ensure that the casters roll smoothly with no binding or scraping.
4. Ensure all locking mechanisms on the casters are functional.
5. Verify that the vertical height adjustment of the column shaft moves freely without binding
or scraping.

CS Mounting Systems 1. Inspect all parts of the arm and mounting system for cracks and other defects that would
weaken the system.
2. Ensure that the mounting system is securely assembled, with no loose parts. The area
should be stable with the head installed.
3. Ensure that the arm moves smoothly in all directions, with no binding or scraping.
4. Verify that all cabling is tied back and does not interfere with the movement of the
supporting parts or the injector head.

NOTE: All relevant guidelines for institutional, local, or national safety recommendations
related to cable routing and installation should be followed.

ISI 1. Inspect all parts of the ISI, ensure all cables are secured to the ISI.
2. Ensure ISI cables are free of cuts, cracks or other obvious damage.

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 MEDRAD Stellant CT Injection System

Electrical Leakage To ensure safe operation of the MEDRAD Stellant CT Injection System, an electrical leakage
Check check must be part of regular maintenance.
Use a commercial leakage tester such as one of the following:

MANUFACTURER MODEL
Bio-Tek Instruments, Inc. Model 601 PRO
Electrical Safety Analyzer
Bender Unimet 1000 ST
Bapco IEC601L

1. With the AC ground open, power applied, and the line at normal, leakage should be less
than 100 micro amps at 110V or 300 micro amps at 220 V.
2. With the AC ground open, power applied and the line reversed, leakage should be less
than 100 micro amps at 110V or 300 micro amps at 220 V.
3. Disconnect the leakage test device.

Ground Continuity A ground continuity check must also be part of regular maintenance of the MEDRAD Stellant
Check CT system.
1. Disconnect the system from the power source.
2. Using an ohm meter, measure the resistance between the ground terminal, the power
cord and the equipotential connector on the Base and the front casting of the head. The
resistance measured must be less than 0.2 ohms.

Cleaning and Cleaning Guidelines

Operational Checkout
Deposits of contrast media can interfere with proper operation of the MEDRAD Stellant CT
Injection System. The following guidelines should be followed when removing deposits, or
cleaning any portion of the system.
WARNING: Serious injury or death may result from exposure to hazardous voltages
existing within the system. Disconnect the system from line power before cleaning or
attempting to perform any maintenance. Ensure that the system is completely dry before
connecting to the power source and applying power.
CAUTION: Improper or careless cleaning methods may result in equipment damage. Do
not soak or immerse any part of the injection system in water. While cleaning any outside
portion of the system, avoid allowing any water to leak inside system components.
• If contrast medium has leaked inside any component of the system, the affected
subassembly should be disassembled and cleaned. This cleaning procedure can be done
in the field by trained MEDRAD Service personnel, or returned to MEDRAD Service.
• Care must be taken not to get water or cleaning solutions inside any system components.
Do not use strong industrial cleaning agents or solvents such as acetone. Warm water
and a mild disinfectant such as antibacterial hand soap are all that is required.
• To clean the syringe interface area of the injector head, fully retract the piston. Using a
paper towel moistened with warm water or a mild disinfectant, gently wipe the inner
syringe installation area. Do not insert any sharp instruments into this area during the
cleaning process.

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 2 - Maintenance and Checkout

Operational Checkout
A basic functional checkout of the MEDRAD Stellant CT Injection System should be included
as part of regular maintenance. Verifying proper operation of the injection system will help in
detection of any problems that may not be noticed in day to day operation. The following
procedure represents a suggested series of activities which encompass typical operation of the
system. Read the following procedure carefully before beginning the checkout. If problems are
detected, refer to the General Troubleshooting Procedure.

CAUTION: Any problems detected during this or any other procedure should be
corrected before using the injection system in patient procedures.

System Labels Ensure that all system safety and warning labels are in place and legible.

Power Up 1. Apply power to the system.

2. Verify that the Safety screen is displayed after system diagnostics occur.
3. Press Continue to acknowledge the messages on the Safety screen.
4. Verify that audible tones are functioning on the Display Control Unit and injector head.
5. Verify that the following controls are functioning properly.
• Forward and Reverse
• Start
• Stop
• Fill
6. Verify that the arm lights on the injector head are functioning.

Programming 7. After the Main screen is displayed, verify that the following controls are functioning
properly.
8. At the rear of the Display, press the Display Brightness Up key until the screen is
lightened to its fullest extent. Press the Display Brightness Down Key until the screen is
darkened to its fullest extent. Adjust the screen appearance to return to a desirable
contrast level.
9. Fully advance and reverse the pistons by using the ENABLE key and the forward/reverse
controls.
10. Ensure the Auto Dock, Auto Advance, and Auto Retract are enabled.
11. Verify that both pistons respond to the forward and reverse controls.

Enter the following protocol:

Dual Flow Rate

Phase Syringe Flow Rate Volume

Phase 1: Syringe A: 10 ml/s 70 ml

Phase 2: Syringe B: 2.5 ml/s 29 ml

Phase 3: Syringe A: 5.0 ml/s 100 ml

Phase 4: Syringe B: 0.1 ml/s 1 ml

2 - 19
 MEDRAD Stellant CT Injection System

Single Flow Rate

Phase Syringe Flow Rate Volume

Phase 1: Syringe A: 10 ml/s 70 ml

Phase 2: Syringe A: 2.5 ml/s 29 ml

Phase 3: Syringe A: 5.0 ml/s 100 ml

Phase 4: Syringe A: 0.1 ml/s 1 ml

12. Install empty syringes(s) and ensure the piston automatically docks with syringe plunger.
The plunger(s) should advance to full forward position.
13. Fully reverse the plunger(s).
14. Arm in single mode and inject. In one of the phases, activate the HOLD feature for at
least 10 seconds.
15. Press Start/Hold again. Verify the injection completes normally, and the Injection
Complete screen values are similar to the protocol values.
16. Advance plunger(s) to the full forward position, remove syringes(s) and ensure the
piston(s) automatically retracts.
17. Inspect the heat maintainer. Make sure it is warm and the fault indicator is not illuminated
while attached to the head.

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 3 - Troubleshooting

3 - Troubleshooting
System Malfunction Conditions can occur which will prevent the injection system from being armed, or even
Codes interrupt an injection that is in progress. These conditions may be operator induced or caused
by a system malfunction. Error Codes which inform the user of these conditions are displayed
on the control panel.

General Consider the following guidelines before troubleshooting any condition. These guidelines may
Troubleshooting help in resolving the condition quickly: Remember, try the simple things first.
Guidelines
CAUTION: Damage may occur as a result of failure to follow electrostatic
discharge (ESD) protection practices. ESD protection practices must be followed
when servicing any component of this system.

CAUTION: Damage could result from improperly handled components. Before

touching any of the circuit cards in the system, discharge yourself to grounded metal.
If memory components are to be shipped, place the components in conductive
carriers (as supplied through MEDRAD).

CAUTION: Disconnect the power cord before removing or replacing PC boards.

Sensitive circuits on the boards can be damaged by abrupt interruption or application
of supplies.

• Try removing the power cord from the power source for one minute. Allow the system to
reset completely, then reapply power and retry. The condition could be intermittent, or
caused by a voltage transient. If the condition persists, continue troubleshooting.
• To verify the existence of a condition, attempt to recreate the problem. Follow the
Checkout Procedure outlined in Section 2 of this manual to check for proper (or improper)
operation of the system.
• Some faults can be caused by a noisy electrical environment. If these conditions persist,
contact MEDRAD Factory Service* for further assistance.
* Indicates contact MEDRAD Factory Service or an Authorized Dealer.

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 MEDRAD Stellant CT Injection System

System Messages The system will display messages on the screen as conditions or events occur. There are three
basic types of messages:

Type 1 Messages Type 1 messages provide information regarding the current system status, and will clear
automatically. These messages typically display in the lower right corner of the screen.

Type 2 Messages Type 2 messages convey information that must be explicitly acknowledged before proceeding.
Press the button(s) within the yellow dialog box to dismiss the message.

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 3 - Troubleshooting

Type 3 Messages Type 3 messages are system malfunction messages which require power to be removed from
the system. Some Type 3 messages provide suggestions to prevent the condition from
recurring. If the condition cannot be corrected, record the code and number from the lower left
corner of the dialog box, then call MEDRAD Service for assistance.

WARNING: Patient injury may result from a system malfunction. If a system

malfunction occurs, immediately remove and disconnect the system from the patient.
If a fault message is displayed that cannot be corrected, and/or the system is not
operating correctly, do not use the injection system. Call MEDRAD for assistance.

Type 3 errors are divided into categories of function level. Each category is also divided into
specific errors. Below is a list of the categories and suggested repair sequences. These are to
be tried in order, not to be performed all at once. Before replacing any parts, cycle power to
injector. This will initiate a system self-test. If this does not correct the problem, replacement of
the Display, Base, or Head as needed is suggested. For further assitance, contact MEDRAD
Service or an authorized dealer.

NOTE: Replacement of the Servo/CPU Card requires calibration/verification.

3 - 23
 MEDRAD Stellant CT Injection System

White Screen/System A white screen that displays, “MEDRAD” indicates a communication or software problem.
Lock Up Condition
• Software mismatched between Display and Head. Software update needed.
• Faulty Head extension cable. Replace Head extension cable.
• Replace the Servo/CPU card

Listing of Type 3 CAL - Calibration

Errors Errors with a prefix of CAL mean that the system has found an error with the system calibration
values missing or corrupt.
• Calibrate system potentiometer, flex ring and pressure.
• Replace the Servo/CPU Card.

DOCK SENSA - Docking Senor A

Errors with a prefix of DOCK SENSA mean that the system has detected that Piston A docking
sensor is closed with no syringe attached on side A.
• Verify syringe is installed correctly.
• Clean syringe interface area.
• Replace size Sensor A.

DOCK SENSB - Docking Senor B

Errors with a prefix of DOCK SENSB mean that the system has detected that Piston B docking
sensor is closed with no syringe attached on side B.
• Verify syringe is installed correctly.
• Clean syringe interface area.
• Replace size Sensor B.

ENCA - Encoder A
Errors with a prefix of ENCA indicate a problem with the Encoder on motor A or the associated
circuitry.
• Ensure P4 is connected.
• Replace the Power Drive card.
• Replace the motor.

ENCB - Encoder B (Dual only)

Errors with a prefix of ENCB indicate that the system has found a problem with the Encoder on
motor B or the associated circuitry.
• Ensure that P4 is connected correctly.
• Replace the Power Drive card.
• Replace the motor.

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 3 - Troubleshooting

FRA - Flex RingA

Errors with a prefix of FR indicate a problem with the Flex Ring on side A.
• Clean housing.
• Replace housing

FRB - Flex RingB

Errors with a prefix of FR indicate a problem with the Flex Ring on side B.
• Clean housing.
• Replace housing

HOVER - Switch Card

Errors with a prefix of HOVER indicate that the system has found a problem with the head,
DCU overlay switch card or the associated circuitry.
• Ensure there where no switches pressed during power up diagnostic test.
• Ensure that the head cable is seated properly.
• Replace the switch card of the module posint the error.
• Replace the Servo/CPU card.

HSW - Handswitch
Errors with a prefix of HSW indicate a problem with the Handswitch or associated circuitry.
• Ensure handswitch is is properly seated.
• Replace handswitch.
• Replace CPU card in moduel where handswitch is installed.

HUB - Ethernet Hub

Errors with the prefix HUB, have detected a problem in the Ethernet HUB or the associated
circuitry.
• Ensure all cables are fully connected into the HUB (power and communication).
• Replace the HUB.

ICD - Interface/Switch Card In Display

Errors with a prefix of ICD indicate a problem with the Display Interface Card in the Display top
section or the associated circuitry.
• Ensure the card has all the connectors fully seated.
• Replace the Display Interface Card.
• Replace the SBC Card.

ICE - Interconnect Card Base

Errors with a prefix of ICE indicate a problem with the Expansion Base Interface Card or the
associated circuitry.
• Ensure that the card connectors are fully seated.
• Replace the Base Interface Card.

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 MEDRAD Stellant CT Injection System

ICS - Interface Card In Head Unit

Errors with a prefix of ISC indicate a problem with the Head Interface Card(s) or the associated
circuitry.
• Ensure that the Head connectors are fully seated.
• Replace the Head Interface Card.
• Replace the Servo/CPU card.

MOTA - Motor A
Errors with a prefix of MOTA indicate a problem with motor A or the associated circuitry during
the H Bridge test.
• Ensure that P3 is connected correctly onto the Power Drive card.
• Replace the Power Drive card.
• Replace the motor.

MOTB - Motor B (Dual only)

Errors with a prefix of MOTB indicate a problem with motor B or the associated circuitry during
the H Bridge test.
• Ensure that P3 is connected correctly onto the Power Drive card.
• Replace the Power Drive card.
• Replace the motor.

PCMCIA - PCMCIA Card

Errors with a prefix of PCMCIA indicate a problem with the PCMCIA card or the associated
circuitry.
• Remove and re-apply power to the unit. This will trigger a self-test that will attempt to
verify proper unit operation. If the problem is corrected, there was probably a voltage
transient in the unit, now cleared, enabling system use.
• Ensure that the card is fully seated into the SBC card.
• Replace the PCMCIA card.
• Replace the SBC card.

POTA - Pot A
Errors with a prefix of POTA indicate a problem with the Potentiometer A or the associated
circuitry.
• Remove and re-apply power to the unit. This triggers a self-test that will attempt to verify
proper unit operation. If the problem is corrected, there was probably a voltage transient in
the unit, now cleared, enabling system use.
• Ensure the connector is fully seated on the interface card.
• Realign potentiometer A.
• Replace potentiometer A.
• Replace Head Interface Card.
• Replace the Servo/CPU card.

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 3 - Troubleshooting

POTB - Pot B (Dual only)

Errors with a prefix of POTB indicate a problem with Potentiometer B or the associated
circuitry.
• Remove and re-apply power to the unit. This triggers a self-test that will attempt to verify
proper unit operation. If the problem is corrected, there was probably a voltage transient in
the unit, now cleared, enabling system use.
• Ensure the connector is full seated on the Interface card.
• Realign potentiometer B. Align with gear train and recalibrate.
• Replace Potentiometer B.
• Replace Head Interface Card.
• Replace the Servo/CPU card.

POWR - Power Drive Card

Errors with a prefix of POWR indicate a problem with the power card or the associated circuitry.
• Verify power supply voltages are at the Power Drive card.
• Ensure that connectors are fully seated.
• Replace the Power Drive card.
• Replace the Servo/CPU Card.

PRSSRA - Pressure Transducer A

Errors with a prefix of PRSSRA indicate a problem with Pressure Transducer A or the
associated circuitry.
• Verify Power Supply voltages are a the Power Drive Card.
• Ensure the Transducer connector is fully seated on the Interface Card.
• Replace the Interface card.
• Replace the Servo/CPU card.

PRSSRB - Pressure Transducer B (Dual only)

Errors with a prefix of PRSSRB indicate a problem with the Pressure transducers B-side or the
associated circuitry.
• Ensure the Transducer connector is fully seated on the Interface Card.
• Replace the Interface card.
• Replace the Servo/CPU card.

RATE - Over Rate Injection

Errors with a prefix of RATE indicate that the system has detected an
over rate condition.
• Verify Calibration
• Ensure potentiometers are fully seated into gears.
• Replace potentiometer of the side with the problem.
• Replace the motor of the side with the problem.
• Replace the Servo/CPU card.

3 - 27
 MEDRAD Stellant CT Injection System

SBC - Single Board Computer (SBC)

Errors with a prefix of SBC indicate a problem with the Single Board Computer or the
associated circuitry.
• Ensure the card has all the connectors fully seated.
• Replace the SBC card.
• Replace the Display Interface Card.

SER - Servo/CPU Card

Errors with SER typically indicate the Head Card. This may be a condition that must be
corrected, or simply an electrical transient that disrupted the system. Try the following:
• Remove and re-apply power to the unit. This triggers a self-test that will attempt to verify
proper unit operation. If the problem is corrected, there was probably a voltage transient in
the unit, now cleared, enabling system use.
• If the problem continues, replace the Servo/CPU card.
• If the condition persists, call MEDRAD Factory Service.

SSD - Start Switch (Display)

Errors with a prefix of SSD typically indicate a problem with the Start Switch. If a Start Switch is
not present, contact MEDRAD Service. If one is present, try the following to return the injector
to service:
• Check the Start Switch connection at the Display to assure the connector is fully seated. If
the connection is loose, remove and reattach the connector.
• Cycle power to the unit to reset the system.
• Disconnect the patient and perform a trial injection using the Start Switch. If the system
performs correctly, return the system to use.
• If the error reappears, remove the Start Switch.
• Cycle power. If the error is resolved, order a replacement Start Switch.
• If the error persists, contact MEDRAD Service.

SSH - Start Switch (Head)

Errors with a prefix of SSH typically indicate a problem with the Start Switch. If a Start Switch is
not present, contact MEDRAD Service. If one is present, try the following to return the injector
to service:
• Check the start switch connection at the Head to assure the connector is fully seated. If
the connection is loose, remove and reattach the connector.
• Cycle power to the unit to reset the system.
• Disconnect the patient and perform a trial injection using the Start Switch. If the system
performs correctly, return the system to use.
• If the error reappears, remove the Start Switch.
• Cycle power. If the error is resolved, order a replacement

3 - 28
 3 - Troubleshooting

SW - Software Problem
Errors with SW typically indicate a problem with internal software. This may be a condition that
must be corrected, or simply an electrical transient that disrupted the system. Try the following:
• Remove and re-apply power to the unit. This triggers a self-test that will attempt to verify
proper unit operation. If the problem is corrected, there was probably a voltage transient in
the unit, now cleared, enabling system use.
• If the problem continues, contact MEDRAD to reload software.
• If the problem continues, replace the SBC card.
• If the problem continues, replace the Servo/CPU card.

SWMTCH - Software Mismatch

Errors with SWMTCH typically indicate a problem with internal software not matching between
the Head and the Display. This may be a condition that must be corrected, or simply an
electrical transient that disrupted the system. Try the following:
• Remove and re-apply power to the unit. This triggers a self-test that will attempt to verify
proper unit operation. If the problem is corrected, there was probably a voltage transient in
the unit, now cleared, enabling system use.
• If the problem continues, contact MEDRAD to reload software.

SWSBC - CPU software

Errors with a prefix SWSBC typically indicate a problem with internal software on the display
CPU card. Try the following:
• Remove and re-apply power to the unit. This triggers a self-test that will attempt to verify
proper unit operation. If the problem is corrected, there was probably a voltage transient in
the unit, now cleared, enabling system use.
• If the problem continues, contact MEDRAD to reload software.
• If the problem continues, replace the SBC card.

SWSER - Servo software

Errors with a prefix SWSER typically indicate a problem with internal software on the Head
CPU card. Try the following:
• Remove and re-apply power to the unit. This triggers a self-test that will attempt to verify
proper unit operation. If the problem is corrected, there was probably a voltage transient in
the unit, now cleared, enabling system use.
• If the problem continues, contact MEDRAD to reload software.
• If the problem continues, replace the Servo/CPU card.

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 MEDRAD Stellant CT Injection System

SYR SENA - Size Sensor A

Errors with a prefix of SSSA indicate a problem with the size sensor on A side or the
associated circuitry.
• Ensure no syringes are on during self test.
• Remove and re-apply power to the unit. This triggers a self-test that will attempt to verify
proper unit operation. If the problem is corrected, there was probably a voltage transient in
the unit, now cleared, enabling system use.
• Ensure the connector between the Syringe Size Sensing Module and the Head Interface
Card is fully seated.
• Replace the Size Sensing Assembly.
• Replace the Interface Card.

SYR SENB - Size Sensor B (Dual only)

Errors with a prefix of SSSB indicate a problem with the size sensor on B side or the
associated circuitry.
• Ensure no syringes are on during self test.
• Remove and re-apply power to the unit. This triggers a self-test that will attempt to verify
proper unit operation. If the problem is corrected, there was probably a voltage transient in
the unit, now cleared, enabling system use.
• Ensure the connector between the Syringe Size Sensing Module and the Head Interface
Card is fully seated.
• Replace the Size Sensing Assembly.
• Replace the Interface Card.

TCHSCR - Touch Screen

Errors with a prefix of TCHSCR indicate a problem with the touch screen or the associated
circuitry.
• Ensure that nothing is pressing the touch screen during self test.
• Remove and re-apply power to the unit. This triggers a self-test that will attempt to verify
proper unit operation. If the problem is corrected, there was probably a voltage transient in
the unit, now cleared, enabling system use.
• Recalibrate the Touch Screen
• Insure ribbon cable for the Touch Screen to the SBC is fully connected.
• Replace the Touch screen.
• Replace the SBC card.

UOM - Unintended opposite motion

Errors with the prefix UOM indicate that a software routing running the DSP did not report in the
allowed time.
• Remove and re-apply power to the unit. This triggers a self-test that will attempt to verify
proper unit operation. If the problem is corrected, there was probably a voltage transient in
the unit, now cleared, enabling system use.
• Replace the Servo/CPU card.

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 3 - Troubleshooting

VOL - Over Volume Injection

Errors with a prefix of VOL indicate that the system has detected an over volume condition.
• Ensure potentiometers are fully seated into gears.
• Replace potentiometer of the side with the problem.
• Replace the motor of the side with the problem.
• Replace the Servo/CPU card.

3 - 31
 MEDRAD Stellant CT Injection System

3 - 32
 4 - Theory of Operation

4 - Theory of Operation
The Stellant system consists of 3 basic parts:
• Display Unit
• Base Unit
• Head Unit (Single or Dual)

Each component in the system is interconnected with an external cable from the Base Unit, the
system center.

In this section, basic circuit block descriptions of each of the sub-systems are explained. A
block diagram of each primary component is followed by a functional block description for each
of the sub-systems.

Description Page

Single Head Interconnect Drawing 4-32

Dual Head Interconnect Drawing 4-34

Display Block Diagram Description 4-36

Display Top Block Diagram 4-38

PCMCIA Block Diagram 4-39

Base Unit Description 4-40

Three Phase Motor Function 4-40

Base Unit Block Diagram 4-42

Single Head Block Diagram Description 4-43

Power Drive Card Block Diagram Description 4-45

Single Head Block Diagram 4-46

Dual Head Block Diagram 4-47

Cable Wiring Pin Out 4-48

4 - 33
 MEDRAD Stellant CT Injection System

Single Head Interconnect Drawing

4 - 34
 4 - Theory of Operation

Single Head Interconnect Drawing

4 - 35
 MEDRAD Stellant CT Injection System

Dual Head Interconnect Drawing

Dual Head Interconnect Drawing

4 - 36
 4 - Theory of Operation

4 - 37
 MEDRAD Stellant CT Injection System

Display Unit The Display interface board is the primary PCB in the Display enclosure. Support circuits are
placed on this PCB including the physical support for the SBC. All connectors and switches,
such as the start switch and interface cable from the Base are terminated at the Display
interface card.

Display - Block Brightness Control

Diagram Description Two buttons. One button sends a voltage to the up count of an up-down counter, increasing the
count to increase the amount of voltage sent to the inverter card; the other button causes the
counter to count down, decreasing the voltage sent to the inverter card. This inverter card
output is also sent to the SBC card for monitoring.

CCFT Inverter
The brightness on the LCD is developed by the use of two CCFT (Cold Cathode Filament
Tube). The CCFT inverter supplies a regulated, adjustable AC potential across the CCFT to
start and maintain fluorescence. The brightness control input of 0-3 VDC is inversely
proportional to the intensity of light emitted by the CCFT.

+12VDC Regulator
The +15 VDC power supply feeds power to a regulator providing a +12 VDC power level to the
CCFT inverter board required to light the CCFT on the LCD panel and supplies power to the
audio amplifier.

+5VDC Regulator
The +15 VDC power supply feeds power to a regulator providing a +5 VDC power level to most
logic circuits.

+3.3VDC Regulator
The +15 VDC power supply feeds power to a regulator providing a +3.3 VDC power level to
most logic circuits.

+12VDC Audio Regulator

The +15 VDC power supply feeds power to a regulator providing a +12 VDC power level to the
CCFT inverter board required to light the CCFT on the LCD panel and supplies power to the
speaker amplifier.

4 - 38
 4 - Theory of Operation

Single Board Computer (SBC)

The SBC is the master controller for system functions and system communications.
• Ethernet interface: 10Base T
• PCMCIA Interface*
• Power Management
• LCD Panel Interface

Speaker Amplifier
The amplifier is driven by an audio signal provided by the SBC card the signal is amplified and
sent to the speaker located on the rear cover. Volume and pitch are controlled by the SBC card.

PCMCIA Card
This card contains the Real Time Clock for the system, 32 Kbytes of Non-Volatile (NV) ram and
256 Kbytes of Boot Flash.

Start Switch
The start switch signals are buffered by the Display interface card and sent to the SBC card.
The signals are fed through a set of normally open and normally closed contacts along with
Start Switch Present line.

Arm light drive for Start Switch

The start switch contains an LED driven from a drive circuit on the Display Interface card from
the SBC.

Touch Screen
The touch screen is an analog output device that is run directly from the SBC card.

LCD
The primary visual interface to the operator is a 640 x 480 Color Liquid Crystal Display (LCD)
panel with a physical dimension of 10.4” diagonally. This is driven directly from the SBC card.

On/Off Switch
The on/off switch provides the means to power down the system. The +15 VDC main power is
switched through a single pole, single throw lighted switch. The light is run off +5VDC

DCU Copilot
This signal enables and disables the +5VDC regulator on the Base Interface Card.

Power Down Indicator

This circuit provides an early warning to the processor when the +15VDC supply rail decays to
+12VDC.

*Depending on system configuration, this may not be present.

4 - 39
 MEDRAD Stellant CT Injection System

Display Top Block Diagram

4 - 40
 4 - Theory of Operation

PCMCIA Block Diagram

4 - 41
 MEDRAD Stellant CT Injection System

Base Unit - Block This unit supplies and controls DC power for the system. It is a communicaton interface
Diagram Description between the Head and the Display and any external communication inputs.

Ethernet Hub
The Ethernet hub is the connection point for all Ethernet communications. The network is
arranged in a star topology with each segment (SBC, FO communications, Service Port, and
an external interface) connecting to a port on the hub. Packets received on one port are copied
to all other ports, allowing all ports on the network to see all packets. The hub is powered by
the 5 volts from the Base interface cards.

Power Sense
The Power sense circuit watches a dedicated digital line (DCU Co pilot) between the Display
and Base for an indication that the Display unit has been turned on. The circuit then energizes
the 5 VDC power to the Base circuitry and HUB.

48 V Switch Circuitry
From the power supply, 48 volts is fed onto the base interface card. On the base interface card
it is filtered and monitored so that it does not fluctuate from 48 volts. If the 48V drops to 42V for
more than 2 seconds, the monitoring circuits disable the switching circuit to shut off the 48
volts feeding the head. Normal operation of the 48V switch cirucuit is controlled by the power
sense line via the 5 volt VCC. Without 5 volts VCC, the 48 volts will not be switched to the
head.

Three Phase Motor To understand how the Drive Card works, one must have a good understanding of how the
Function Operation entire servo system works, which includes the Servo/CPU Card, the Base Interface card and
the BLDC (Stepper) motor. One must also understand BLDC motor principles and
commutation techniques. This is a basic explanation on how motor stator excitation is
performed, so as to produce rotary motion.
COMMUTATION TABLE
CW ROTATION
POWER AMPLIFIER OUTPUT
∅A ∅B ∅C
L H X
L X H SYRINGE A
BLDC MOTOR
X L H
H L X A C

H X L
B

X H L
PHASE A

PHASE B

PHASE C

LEGEND:
L - Low Side H - High Side X - OFF ACH
ABH

The commutation table shown above shows the AAH

switching order that the power amplifier FETs

must follow in order to cause clockwise motor AAL

shaft movement. The first 60× of rotation is

ABL
ACL

accomplished by setting ABH and AAL high

while holding all other signal low. Current is Figure 1
sourced from Phase B of the bridge, and sunk
through Phase A as shown in Figure 1.

4 - 42
 4 - Theory of Operation

The next 60° of rotation is caused when ABH is shut off, AAL is left on, and ACH is switched
on. Current sinking will still occur through the Phase A motor winding, however, current will now
be sourced through Phase C as shown in Figure 2.
SYRINGE A
BLDC MOTOR

A C

PHASE A

PHASE B

PHASE C
ACH
ABH

AAH

AAL

ABL
ACL

Figure 2
Once complete, then AAL is switched to the off state, and ABL is switched on, while ACH is
kept on. The current sinking path is now transferred to Phase B. By following the commutation
table, one can see that for a 360× cycle, each switching device is held on for 120× thus
allowing current to flow through that particular phase for 120×. Figure 3 is a graphical display of
the current flow through the motor windings for the given example.

ELECTRICAL DEGREES

0-59 60-119 120-179 180-239 240-299 300-359

MOTOR CURRENT

Phase A

Phase B

Phase C

Figure 3

4 - 43
 MEDRAD Stellant CT Injection System

Base Unit Block Diagram

4 - 44
 4 - Theory of Operation

Single Head Block The head consists of 6 separate cards and the mechanical drive. The cards are:
Diagram Description • Power Regular card
• Servo/CPU card
• Head interface card
• Power Drive card (2 needed for a dual head)
• LED Card
• Syringe size sensing assembly (Two needed for Dual)

Power card
The power card is to regulate power from the base unit and distribute it ot the other cards.

Block diagram Descriptions

Heat Maintainers
The heat maintainer runs on the 48 V supplied from the base units.

5V DC Regulator
This cirucuit uses a 5V DC switching regulator to produce a +5V supply for the head circuitry.
This voltage is derived from the +15V DC from the base.

Servo/CPU Card
The CPU/Servo card contains a microprocessor that performs the following functions in the
head:
• Card power management
• Data management I/O - two ports
• Footswitch control
• Network communications in conjunction with the Tower
• Motor Drive control
• JTAG - programming port - not used.

Head Interface Card

The Head card is the electrical interconnect point between the internal electronics of the head
to the Servo CPU card.

Block Diagram Descriptions

POT_REF Regulator
This circuit uses a +4.096 VDC reference to produce the +4.096V at the 0.05 Amps reference
voltage for the potentiometers. This voltage is derived from +5 VDC.

Potentiometer Buffers
The Pot signals are routed to the Servo/CPU. This signal is buffered and filtered on the Head
interface card before being routed to the Servo/CPU.

Pressure V+ Loopback
This signal monitors a reference voltage from the top of the pressure bridge. The reference is
an output from the pressure sensor and is buffered before being sent to the Servo/CPU card
where it is monitored as a critical voltage.

4 - 45
 MEDRAD Stellant CT Injection System

Pressure Buffered
The signal from the pressure sensor is sent to the Servo/CPU card. It is buffered and filtered on
the Head Interface card.

Pressure A Syringe
This circuit uses a full Wheatstone bridge arrangement to produce a differntial signal which
corresponds to the force applied to the rear plate due to the pressure in the syringe. This signal
is sent to the Servo/CPU card.

Start Switch Interface

Start switch signals are conditioned and routed to the Servo/CPU card through the Head
Interface card. The signals pass through a set of normally open and normally closed contacts
along with the Hand Switch Present line.

Hand Switch Arm Light Drive

The Hand Switch Arm Light drive signal comes from the Servo/CPU card to a driver on the
Head Interface card.

LED Board
LEDs on the board are driven by the A driver on the Head Interface card.

Potentiometer A
The Pot provides an analog signal from 0 to 4.096 VDC indicating the absolute position of the
piston during power up. It also serves as a backup to the syringe encoder during a move. This
signal is buffered and filtered in the Head Interface card and passed to the Servo/PCPU card.

Flex Ring Sensor

The Flex Ring system is an electro/mechanical design this is used by the Stellant Dual and
Single Syringe injector to determine if a syringe or adapter has been inserted or removed from
the injector assembly.

Autodocking Sensor
The Autodocking sensor consits of a spring energized mechinical pin whie, when depressed,
interrupts an optical path, thereby closing a transistor switch. The sensor is used to determine
when the piston has encountered the rear of the syringe, known as the plunger.

Speaker Drive - Head

The speaker on the head is a piezo device (buzzer) that is driven by an external oscillator
residing on the Head Interface board. A resistor controls the oscillator frequency.

Syringe Size Sensing (SSS)

The SSS Module consists of 2 PCBs containing an LED and an array of photodiodes, as well
as various alignment/focus mechanical components. The LED illuminates the Syringe whie,
through a series of grooves, disperses the light in a characteristic pattern unique for a particular
syringe, or Pre-filled Adapter.

4 - 46
 4 - Theory of Operation

Power Drive Card - SYRINGE A PWM ISOLATION

Block Diagram This block provides electrical isolation of the Pulse Width Modulation (PWM) switching signals
Description for Syringe A. These signals are generated on the Servo/CPU Card via DSP A and are used to
command and control the power amplifier current delivery to the motor.

SYRINGE A DRIVER
The Syringe Driver stage performs voltage translation and current capacity enhancement to
the PWM signals for the Syringe motor. Once the PWM signals have passed through the
isolation barriers, they are routed to the Driver circuits. It is the responsibility of the Driver to
translate the 0-5V PWM signals to 0-12V on the low channels, and 0-12V plus boost voltage on
the high side. The Driver has the capacity of sinking and sourcing high switching currents
normally associated with power FETs. The Drive Inhibit signal disables the Driver output
signals. When Drive Inhibit is active high, the outputs are disabled. When low, the outputs are
enabled. The Driver has builit-in shoot-through protection to inhibit high side and low side out-
puts from being turned on simultaneously.

SYRINGE A POWER AMPLIFIER

The Syringe Power Amplifier is configured in a 3-phase bridge arrangement comprising 6 N-
Channel Enhancement mode power FETs. Each bridge leg is configured in a high-low
arrangement with a motor phase (A,B, or C) tapped at the junction of the upper and lower
power FET. The Syringe Power Amplifier converts the low level PWM signals from DSP on the
Servo/CPU to high current motor signals that are used for the excitation of the stator windings
of the Syringe BLDC motor. The switching rate for the Power Amplifier is approximately 16
KHz.

DRIVE INHIBIT CONTROL

This block provides shutdown control of the Drivers, which in turn disable the Syringe Power
Amplifiers. This signal is generated on the Servo/CPU card and is passed through optical
isolation circuitry where it is applied to the Shutdown pins of all drivers. When Drive Inhibit is
active high, the outputs of all drivers are disabled.

DRIVE INHIBIT STATUS

This block is a feedback to the Servo/CPU card indicating the status of the Drive Inhibit signal.
This signal is optically isolated from the drive section of the board.

SYRINGE BRIDGE CURRENT TEST FEEDBACK

This block is responsible for measuring, isolating and filtering each Syringe Power Amplifier
bridge node voltage. The rationale is: During bridge testing, these nodes will provide vital
voltage information back to the Servo/CPU Card on the status of the bridge and motor
windings. By exploiting the resonant frequency of the motor windings series inductance and
distributed capacitance, each phase of the bridge can be excited with a single, short duration
pulse. These pulses would be long enough to induce current into the motor windings but not
long enough to produce motion. By observing the voltage at each node during excitation, the
status of both the bridge and motor windings can be ascertained.

HIGH SIDE BOOST

The HIGH SIDE BOOST block is to generate a floating voltage that is applied to the high-side
FET gates at the Driver stage. This voltage (VBOOST) allows the gate voltage of the high side
FETs to remain elevated above the source voltage when that particular leg of the bridge is
sourcing motor current.

+5VDC REGULATOR
This block provides 5VDC power to the motor side of the following subsystems for both Syringe
A and B axes: Bridge Test Current Feedback, PWM Isolation, Drivers.

4 - 47
 MEDRAD Stellant CT Injection System

Single Head Block Diagram

4 - 48
 4 - Theory of Operation

Dual Head Block Diagram

4 - 49
 MEDRAD Stellant CT Injection System

Cable Wiring Pin Out Diagrams

4 - 50
 5 - Disassembly / Assembly & Replacement Parts

5 - Disassembly / Assembly &

Replacement Parts
When troubleshooting the Stellant Injection System, it may be necessary to order replacement
parts for a given assembly. This section contains information regarding individual assemblies of
the system. Each primary assembly has a corresponding Parts List and Parts Diagram,
specifying components that may require replacement.

When ordering replacement parts, contact Medrad Service, or your authorized Medrad dealer.

Parts Lists and Diagrams are arranged in the following sequence:

Display 5-3 P/N 3007032

Base 5-15 P/N 3007039

Single 5-24 P/N 3007040 or 3007062

Dual 5-46 P/N 3007033 or 3007038

ISI 800 5-117 P/N 3012987

ISI 700 5-119 P/N 3010435

Pedestal 5-121

Misc. 5-122

Parts List Each Parts Lists contains the following information:

Components
1. Item Number
This number refers to the labels of all items specified in the parts diagrams.

2. Part Description
This information, useful in part identification, is a brief description of all items specified in the
parts diagrams.

3. Part Number
Used specifically for ordering purposes, these numbers are the primary designators of all
system components, and should be used when ordering any Medrad replacement parts.

4. Quantity
This number represents the quantity of like pieces that are used in the represented assembly.

NOTE: Replacement of rear plate, pots, single or dual housing, or Servo/CPU PCB will require
calibration.

5 - 51
 MEDRAD Stellant CT Injection System

Symbols Guide The table below is a reference guide for the symbols displayed in the drawings on the following
pages.

Cautions & Warnings

WARNING: Hazardous voltages exist within the Stellant Injection System that can
shock, burn, or cause death. To avoid injury, the system should be opened and serviced by
qualified service personnel only. Disconnect the system from line power before cleaning or
attempting to perform any maintenance.

WARNING: Immediately disconnect the patient from the injector if any system
malfunction occurs. If a system malfunction message appears, do not attempt to use the
sytstem until the source of the condition has been identifiied and corrected by qualified service
personnel. Do not attempt to recreate any fault conditons while the injector is connected to a
patient.

CAUTION: Electrostatic Discharge (ESD). Failure to follow ESD protection practices

may result in equipment damage. ESD protection practices must be followed when servicing
any component of this system.

Drawings See the Assemby / Disassembly drawings and Replacement Parts listing
below.

5 - 52
 5 - Disassembly / Assembly & Replacement Parts

Display

ITEM PART NUMBER DESCRIPTION QTY

1 600-5007-400 Foot 7

2 3007413 Stand Display 1

3 Screw #8 - 32 x 3/4” 3

4 201829 Label, Static Discharge 1

5 - 53
 MEDRAD Stellant CT Injection System

Display

ITEM PART NUMBER DESCRIPTION QTY

1 Screw PH #8 - 32 x 1/2” 7

2 3007412 Hinge 1

5 - 54
 5 - Disassembly / Assembly & Replacement Parts

Display

5 - 55
 MEDRAD Stellant CT Injection System

Display

ITEM PART NUMBER DESCRIPTION QTY

1 3007646 Speaker 1

2 3008892 Speaker Bracket 1

3 Screw PH #8 - 32 x 1/8” 2

4 3005273 Switch Boot 1

1 2 3

5 - 56
 5 - Disassembly / Assembly & Replacement Parts

Display

ITEM PART NUMBER DESCRIPTION QTY

1 3007163 Enclosure 1

2 Screw PH #8 - 32 x 3/8” 3

3 3008313 Clamp 1

4 Screw PH #8 - 32 x 3/8” 1

5 3007641 PWR Switch 1

6 201459 Label 1

7 Label S/N 1

3
5

5 - 57
 MEDRAD Stellant CT Injection System

Display

ITEM PART NUMBER DESCRIPTION QTY

1 3006662 DCU Audio Cable 1

2 3007630 Touchscreen cable 1

5 - 58
 5 - Disassembly / Assembly & Replacement Parts

Display

ITEM PART NUMBER DESCRIPTION QTY

1 3005101 Cable DC PWR to SBC 1

2 3004546 Cable Ethernet 1

3 3007629 Inverter Cable 1

2
ETHERNET

5 - 59
 MEDRAD Stellant CT Injection System

Display

ITEM PART NUMBER DESCRIPTION QTY

1 3007163 Screw PH #4 - 40 x 3/8” 6

2 3012914 PCB PCMCIA* 1

3 3006351 Retainer Bracket 1

4 Screw PH #4 - 40 x 3/8” 1

5 3006249 Inverter 1

*Not required if SBC cord is P/N 3011679

4
5
3

5 - 60
 5 - Disassembly / Assembly & Replacement Parts

Display

ITEM PART NUMBER DESCRIPTION QTY

1 3004212 Single Board Comp Strong Arm* 1

1 3011679 Single Board Comp Super H* 1

*Order same card cumer as removed.

5 - 61
 MEDRAD Stellant CT Injection System

Display

ITEM PART NUMBER DESCRIPTION QTY

1 3007247 PCB Interface 1

2 Screw PH #6 - 32 x 1/4” 4

3 3004545 30 Pin RBN Cable 1

4 3004544 40 Pin RBN Cable 1

3 4

5 - 62
 5 - Disassembly / Assembly & Replacement Parts

Display

ITEM PART NUMBER DESCRIPTION QTY

1 3004231 LCD DIsplay 1

2 3007411 LCD Bracket 1

3 Screw PH #6 - 32 x 1/4” 8

4 3007333 Cable SBC To LCD 1

5 3007642 Keyboard Cable 1

4
3

5 - 63
 MEDRAD Stellant CT Injection System

Display

ITEM PART NUMBER DESCRIPTION QTY

1 3007164 Display Bezel 1

2 3007438 Rubber Keypad 1

3 Screw PH #6 - 32 x 1/4” 5

4 3007383 Touchscreen 1

5 - 64
 5 - Disassembly / Assembly & Replacement Parts

Base

ITEM PART NUMBER DESCRIPTION QTY

1 202036 Patent Label 1

2 201428 Warning Label 1

3 98411-T-148 EQL POT Label 1

4 3008312 FO Plugs 2

1
2

5 - 65
 MEDRAD Stellant CT Injection System

Base

ITEM PART NUMBER DESCRIPTION QTY

1 3007204 Base Bottom 1

2 600-5007-400 Rubber Feet 6

3 528-1450-001 YEL/GRN washer 1

4 528-4057-001 Brass Plug 1

5 3009074 Line Pwr Filter 1

6 Screw FH #4 32 x 1/2” 2

7 3009595 Fuse 2

8 528-8704-001 Lock washer 1/4” 1

9 528-8501-001 EQL POT Nut 1

10 3004653 Filter Bracket 1

10
9 2

3
4

7
6

5 - 66
 5 - Disassembly / Assembly & Replacement Parts

Base

ITEM PART NUMBER DESCRIPTION QTY

1 3008893 GND Stud 1

2 605-0010-000 Star Washer #10 5

3 3007713 Cable GND Kit 1

4 3007712 Pwr Input Kit 1

5 604-1132-380 Nut #10 2

5 2

2
4

5 - 67
 MEDRAD Stellant CT Injection System

Base

ITEM PART NUMBER DESCRIPTION QTY

1 3007203 Cover 1

2 601-0440-180 Ret Screws D-SUB 2

3 528-1450-001 Serial Tag 1

4 618-0832-999 Captive Screw #8 2

5 3008316 Captive Screw #8 2

6 3000221 Standoffs 6

7 3008631 Cover Cap 1

8 3005973 O-ring 4

9 3009553 Retainer 1

10 3009554 Cable Tie Reusable 1

2
4 7
6

3
9

10

5 - 68
 5 - Disassembly / Assembly & Replacement Parts

Base

ITEM PART NUMBER DESCRIPTION QTY

1 3007700 Cable Pwr 48VDC 1

2 3011929 Cable Pwr 15V 1

P
3009209

5 - 69
 MEDRAD Stellant CT Injection System

Base

ITEM PART NUMBER DESCRIPTION QTY

1 3010582 HUB 1

3 3007298 Interface PCB 1

4 3010581 Interface Bracket 1

6 Screw PH #6 32 x 3/8” 2

7 3010583 Cable Pwr to HUB 1

8 3004546 Cable Ethernet 4

1 4

7 3 5

5 - 70
 5 - Disassembly / Assembly & Replacement Parts

Base

ITEM PART NUMBER DESCRIPTION QTY

1 3007471 Pwr Supply Bracket 1

2 3011921 Power Supply 1

3 Screw PH #8 32 x 1/4” 4

4 Screw PH #8 32 x 3/8” 2

5 - 71
 MEDRAD Stellant CT Injection System

Base

ITEM PART NUMBER DESCRIPTION QTY

1 3007480 Pwr Supply Bracket 1

2 3007384 Pwr Supply 1

3 602-0832-120 REC PN HD #8 4

4 602-0632-380 REC PN HD #6 2

3 1

5 - 72
 5 - Disassembly / Assembly & Replacement Parts

Base

ITEM PART NUMBER DESCRIPTION QTY

1 3009209 Base Bottom Assy 1

2 3007416 Chassis 1

3 Screw PH #8 32 x 1/2” 4

5 - 73
 MEDRAD Stellant CT Injection System

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007652 Lens 1

2 3008786 Lens Gasket 1

3 Screw #6 - 32 x 5/8” 2

4 3007654 Knob 1

1
3

5 - 74
 5 - Disassembly / Assembly & Replacement Parts

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 Screw #8 - 32 x 1/2” 4

2 3008351 Cable Retainer 1

3 Screw #2 - 56 x 5/16” 2

4 3007724 Gasket A/R

2 4

5 - 75
 MEDRAD Stellant CT Injection System

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3010079 Bottom Cover 1

2 3007801 Cable, Heat Maintainer 1

3 Screw #4 - 40 x 1/4” 2

4 3007789 Hand Switch Cable 1

5 3009198 Plug 1

6 Serial Label 1

7 3009649 Ferrite Core128A2432-0A21 1

8 3009662 Ferrite Core (0443665801) 1

9 201966 HS & Heat Maintainer Label 1

1
3

5
2

5 - 76
 5 - Disassembly / Assembly & Replacement Parts

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3009235 Top Cover 1

2 Screw #8 - 32 x 1/2” 4

5 - 77
 MEDRAD Stellant CT Injection System

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007476 Overlay PCB 1

2 3013785 Overlay Gasket 1

3 3008164 Overlay Rubber, S 1

3 3008165 Overlay Rubber, SX 1

4 3008162 Overlay Graphics, S 1

4 3008163 Overlay Graphics, SX 1

OVERLAY

MODEL ITEM 3 (RUBBER) ITEM 4 (GRAPHICS)

3007040 3008165 3008163

3007062 3008164 3008162

5 - 78
 5 - Disassembly / Assembly & Replacement Parts

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3008849 Standoff 15/16 4

2 3008102 LED PCB 1

3 Screw #6 - 32 x 3/8” 4

4 3008787 LCD PCB Gasket 1

5 3009701 Cable Tie Mount 1

6 3009648 Ferrite Core 1

7 715-0096 003 Cable Tie 1

1
2

4
3

6
5

5 - 79
 MEDRAD Stellant CT Injection System

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007260 CPU / Servo PCB Strong arm* 1

1 3011677 CPU / Servo PCB Super H* 1

2 628-1434-631 Standoff #6 - 32 plastic 6

3 3009649 Ferrite Core 1

* Order same card number as removed.

5 - 80
 5 - Disassembly / Assembly & Replacement Parts

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3012531 Power Cord 1

2 539-0550-000 Hose Clamp 1

3 3003725 Lock Washer #10 1

4 602-1032-380 Screw #10 - 32 1

5 3009650 Ferrite core 1

6 715-0096-003 Cable Tie 1

4 3
1

5 6

5 - 81
 MEDRAD Stellant CT Injection System

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007297 PWR Regulator PCB 1

2 Screw #6 - 32 x 3/16” 3

3 3010112 Cable, CPU / Servo to PRC 1

5 - 82
 5 - Disassembly / Assembly & Replacement Parts

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007293 PWR Drive PCB 1

2 Screw #6 - 32 x 3/16” 3

3 3007695 Cable, CPU / Servo to PDC 1

5 - 83
 MEDRAD Stellant CT Injection System

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3010111 Cable, CPU / Servo to Interface 1

2 3007790 Cable, PRC to Interface 1

3 3007802 Cable, Arm Lamp 1

4 3009701 Mount, Cable tie 1

5 3009648 Ferrite Core 1

6 715-0096-003 Cable Tie 1

2 3
6

5
4

5 - 84
 5 - Disassembly / Assembly & Replacement Parts

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3011704 Interface PCB 1

2 Screw #6 - 32 x 3/16” 4

3 3009701 Cable Tie Mount 2

4 280-2643-665 Ferrite core 2

5 715-0096-003 Cable Tie 2

1 2

3 5 4
4 5 3

5 - 85
 MEDRAD Stellant CT Injection System

Single Head

ITEM P/N Old Style P/N New Style PART NUMBER DESCRIPTION QTY
1 3007094 3013103 Window

2 3008365 3013101 Gasket

3 3009210 Single Housing 1

4 3009234 3013368 Size Sensing Kit* 1

5 3009341 Nylock Nut #10 4

6 Screw #4 - 40 x 3/8” 2

Old Style Size Sensor will only fit in Old Style front housing. If replacing housing (#3), you must order New
Style Size Sensor (#4).
*Size Sensing Kit comes with window, board, gasket and screws.

5 DO NOT
New Style Old Style (2 boards) OVERTIGHTEN

1
2

5 - 86
 5 - Disassembly / Assembly & Replacement Parts

Single Head

ITEM P/N STYLE A P/N STYLE B PART NUMBER DESCRIPTION QTY

1 3008704 3010914 Plunger Sleeve 1

2 3007318 3010898 Plunger 1

3 3008615 3010900 Plunger Boot 1

4 3007314 Plunger Pin 6

5 3008336 Spring 1

6 3007313 Sensor Pin 1

7 3007332 3010912 Piston Wedge 1

8 3008334 Dowel Pin 1

9 3008553 Set Screw 2

10 N/A 3008336 Spring 1

4 5
3

8
1
7
2
6

Style A
Style B

8
8

10

5 - 87
 MEDRAD Stellant CT Injection System

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 Screw 1/4 - 20 x 3/4” 2

2 3008784 Front Mounting Plate 1

3 3008991 Gasket 1

4 3007331 Outer Piston Sleeve 1

5 3012696 Wiper Seal 1

3
1

5 - 88
 5 - Disassembly / Assembly & Replacement Parts

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 403003602 Pully Washer 1

2 401000423 Belt Pulley 1

3 607-0074-580 Washer 1

4 609-1420-999 Nut 1/4-20 1

5 682-7090-306 Timing Belt 1

2
4

5 - 89
 MEDRAD Stellant CT Injection System

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3009042 Bearing 1

2 3009129 Shim 1

3 401000422 40 Tooth Gear 1

4 682-4812-480 Idler Gear 1

5 - 90
 5 - Disassembly / Assembly & Replacement Parts

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 717-4016-120 Foam Tape 1

2 Screw #4 - 40 x 3/8” 1

3 3009101 Flex Cable Plate 1

4 3000253 Screw 1/4 - 20 2

5 - 91
 MEDRAD Stellant CT Injection System

Single Head

ITEM STYLE PART NUMBER DESCRIPTION QTY

1 A 3008242 Sensor Cable 1

1 B 3011186 Sensor Cable 1

2 3007317 Sensor Retainer 1

3 Screw #2 - 56 x 7/16” 2

1
1
3

5 - 92
 5 - Disassembly / Assembly & Replacement Parts

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3008554 Knuckle Stub 1

2 3008362 Gasket 1

3 Screw #8 - 32 x 1 3/4” 2

4 3008850 Bellville Washer 1

5 3007720 Knuckle Washer 1

6 3008338 Knuckle Adjustment 1

7 3008110 Knuckle Assembly 1

8 3008810 Knuckle Bushing 1

9 3007721 Knuckle Plug 1

10 3009103 Magic Bar 1

3 10
2

5
6

1
4

8 7
9

5 - 93
 MEDRAD Stellant CT Injection System

Single Head

ITEM STYLE PART NUMBER DESCRIPTION QTY

1 401000447 Washer 1

2 A 3007320 Inner Piston 1

2 B 3010899 Inner Piston 1

3 3007694 Ballscrew 1

5 - 94
 5 - Disassembly / Assembly & Replacement Parts

Single Head

ITEM PART NUMBER DESCRIPTION QTY

1 3009207 Rear Plate 1

2 3009204 POT 1

3 403002877 48 Tooth Gear 1

4 3007304 DC Motor 1

5 Screw #4 - 40 x 1/4” 3

6 401000421 Drive Pulley 1

7 645-5144-210 Retaining Ring 1

1 2

5
6
7

5 - 95
 MEDRAD Stellant CT Injection System

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007653 Lens 1

2 3008786 Lens Gasket 1

3 Screw #6 - 32 x 5/8” 2

4 3007654 Knob, Green 1

5 3009013 Knob, blue 1

1
3

4
5

5 - 96
 5 - Disassembly / Assembly & Replacement Parts

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 Screw #8 - 32 x 1/2” 4

2 3008340 Cable retainer 1

3 Screw #4 - 40 x 3/8” 2

4 3007724 Gasket A/R

4
2
3

P/N 3007789

P/N 3007801

5 - 97
 MEDRAD Stellant CT Injection System

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3010080 Bottom Cover 1

2 3007801 Maintainer Cable 2

3 3007789 Handswitch Cable 1

4 Screw #4 - 40 x 1/4” 2

5 3009198 Plug 2

6 201423 Serial Tag 1

7 3009629 Ferrite Core 2

2
4

6 3

5 - 98
 5 - Disassembly / Assembly & Replacement Parts

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007477 PCB Overlay 1

2 Screw #6 - 32 x 3/8” 1

3 3008167 Overlay Rubber 1

4 3008166 Overlay Graphics 1

5 3013784 Overlay Gasket 1

6 3009236 Top Cover 1

7 Screw #8 - 32 x 1/4” 4

1
2

5 - 99
 MEDRAD Stellant CT Injection System

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3009232 Standoff 4

2 3008103 LED PCB 1

3 Screw #6 - 32 x 3/8” 4

4 3008787 Dual PCB Gasket 1

5 3008906 Cable Mount 1

6 Screw #6 - 32 x 3/16” 1

7 715-0096-003 Cable Tie 1

1
2

5 6 7

5 - 100
 5 - Disassembly / Assembly & Replacement Parts

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3012520 Power Cord 1

2 539-0550-000 Hose Clamp 1

3 3003725 Lock Washer #10 1

4 Screw #10 - 32 x 3/8” 1

5 3008906 Cable Mount 3

6 Screw #6 - 32 x 3/16” 3

7 715-0096-003 Cable Tie 6

3
4

5 6

5 - 101
 MEDRAD Stellant CT Injection System

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007431* Servo PCB Strong Arm 1

1 3011675* Servo PCB Super H 1

2 628-1434-631 Standoff 5

3 3008723 Offset Standoff 1

4 Screw #6 - 32 x 1/2” 1

*Order same card number as removed.

4 2

5 - 102
 5 - Disassembly / Assembly & Replacement Parts

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007297 PWR Regulator PCB 1

2 Screw #6 - 32 x 3/16” 4

3 3010112 Cable, Servo to PRC 1

1
3

5 - 103
 MEDRAD Stellant CT Injection System

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007293 Power Drive Card 2

2 Screw #6 - 32 x 3/16” 6

3 3008392 Cable, Servo To PDC 2

3
2

5 - 104
 5 - Disassembly / Assembly & Replacement Parts

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007790 Cable, Inter To PRC 1

2 3007802 Cable, Inter To Arm Lamp 2

2
1

5 - 105
 MEDRAD Stellant CT Injection System

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3011778 Interface PCB 1

2 Screw #6 - 32 x 3/16” 4

3 280-0443-163 Ferrite 1

4 717-4016-120 Foam Tape A/R

5 3007781 Cable, Servo To Inter 1

1
3 4

5 - 106
 5 - Disassembly / Assembly & Replacement Parts

Dual Head

ITEM P/N Old STYLE P/N New STYLE PART NUMBER DESCRIPTION QTY
1 3009211 Dual Housing 1

2 3009341 Nylock Nut #10-32 6

3 3009234 3013368 Size Sensor Kit* 2

4 3007094 3013103 Window 1

5 3008365 3013101 Gasket 1

6 3007803 Cable, Size Sensing 2

7 Screw, #4 - 40 x 3/8” 4

Old Style Size Sensors will only fit on Old Style front housing. If replacing (P/N 1) you must order New Style sensors (P/N 3).
*Size Sensing Kit comes with window, board, gasket and screws.

4
5

3
2
7
Old Style (2 boards)

6
New Style

5 - 107
 MEDRAD Stellant CT Injection System

Dual Head

ITEM P/N STYLE A P/N STYLE B PART NUMBER DESCRIPTION QTY

1 3008704 3010914 Rubber Sleeve 2

2 3008615 3010900 Plunger Boot 2

3 3007318 3010898 Plunger 2

4 3007314 Plunger Pins 12

5 3007332 3010912 Piston Wedge 2

6 3007313 Sensor Pin 2

7 3008336 Spring 2

8 3008334 Dowel Pin 2

9 3008553 Set Screw 2

10 N/A 3010911 Spring 2

8
7
4
3

5 1

6 8

10

Style A Style B

5 - 108
 5 - Disassembly / Assembly & Replacement Parts

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 717-4016-120 Foam Tape 2

2 3009101 Flex Cable Plate 2

3 Screw #4 - 40 x 3/8” 4

1
3

5 - 109
 MEDRAD Stellant CT Injection System

Dual Head

ITEM STYLE PART NUMBER DESCRIPTION QTY

1 A 300733 Outer Piston Sleeve 2

1 B 3007331 Outer Piston Sleeve 2

2 3008785 FNT Mounting Plate 1

3 3000253 Screw 1/4 - 20 x 3/4” 4

4 3008991 Gasket 2

5 3012696 Wiper Seal 2

5 - 110
 5 - Disassembly / Assembly & Replacement Parts

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 682-4812-480 Idler Gear 2

2 3008724 Cable Router 1

3 Screw #6 - 32 x 3/8” 2

4 403003602 Pulley Washer 2

5 401000423 Belt Pulley 2

6 607-0014-580 Washer 2

7 600-1420-919 Lock Nut 1/4 - 20 2

8 682-7090-306 Timing Belt 2

2
3
4

5
7
8

5 - 111
 MEDRAD Stellant CT Injection System

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3009042 Bearing 2

2 3009129 Shim 2

3 401000422 40 Tooth Gear 2

1
2
3

5 - 112
 5 - Disassembly / Assembly & Replacement Parts

Dual Head

ITEM STYLE PART NUMBER DESCRIPTION QTY

1 A 3008242 Sensor Cable 2

1 B 3011186 Sensor Cable 2

2 3007317 Sensor Retainer 2

3 Screw #2 - 56 x 7/16” 4

1
3
1

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 MEDRAD Stellant CT Injection System

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3008781 Left Magic Bar 1

2 Screw 1/4 20 x 3/4” 4

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 5 - Disassembly / Assembly & Replacement Parts

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007308 Right Magic Bar 1

2 3008554 Knuckel Stub 1

3 3008362 Gasket 1

4 Screw #8 - 32 x 1 3/4” 2

5 3008850 Bellville Washer 1

6 3007720 Knuckle Washer 1

7 3008338 Knuckle Adjustment 1

8 3008110 Knuckle Assembly 1

9 3008810 Knuckle Bushing 1

10 3007721 Knuckle Plug 1

2 3
6
7

5
10 9
8

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 MEDRAD Stellant CT Injection System

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3007694 Ballscrew 2

2 401000447 Washer 2

3 3007320 Piston 2

3 3010899 Piston 2

3
2
1

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 5 - Disassembly / Assembly & Replacement Parts

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3009204 POT 2

2 403002877 48 Tooth Gear 2

3 401000421 Drive Pulley 2

4 645-5144-210 Retaining Ring 2

3 2
4

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 MEDRAD Stellant CT Injection System

Dual Head

ITEM PART NUMBER DESCRIPTION QTY

1 3009208 Rear Plate 1

2 3007304 DC Motor 2

3 Screw #4 - 40 x 1/4” 6

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 5 - Disassembly / Assembly & Replacement Parts

ISI 800

ISI 800 (3012987) Part numbers and descriptions on next page.

2
3

1 4
5
7
6 8
273 9
10
26 11
25 12
13
24
23
14
15
22

20

19 16
18 17
21

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 MEDRAD Stellant CT Injection System

ISI 800

ITEM PART NUMBER DESCRIPTION QTY

1 3011217 Screw, 4M x 20M 4

2 3012984 Top, Enclosure 1

3 3011055 Gasket 1

4 3012979 Supply, Power 1

5 602-0440-140 Screw, 4-40 x 1/4 4

6 3004653 Plate, Backing 1

7 3010164 Gasket, Line Filter 1

8 528-8501-001 Nut, 08-0501 1

9 604-1132-380 Nut, Hex, 10-32 2

10 528-8704-001 Lock Washer, External 3

11 3013141 Switch and wiring 1

12 3013289 Set screw, Socket 1

13 528-8704-001 Lock washer, external 1

14 528-1450-001 Washer, color code 1

15 528-4057-001 Plug, Brass 1

16 3011210 Fuse 2

17 603-0440-120 Screw, 4-40 x 1/2 2

18 3001201 Module, Power 1

19 3010700 Pipe, Light 5

20 3000221 Screw, Jack 4

21 600-5007-400 Foot, Black 4

22 3012983 Enclosure, Bottom 1

23 3013012 Assembly, PCB 1

24 3014626 PCB Assembly 1

25 3013027 Standoff, 2-56 x 3/8 4

26 3011216 Screw, 4M x 5M 4

27 3008881 Screw, 2-56 x 3/16 4

Not Shown:

3013141 AC supply harness

3010698 DC supply harness

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 5 - Disassembly / Assembly & Replacement Parts

ISI 700

ISI 700 (3010435) Part numbers and descriptions on next page.

25 1

3
24
5
23 4
6
22 7
21
20 8
9
10
19 11
18 12

15
16 13
17 14

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 MEDRAD Stellant CT Injection System

ISI 700

ITEM PART NUMBER DESCRIPTION QTY

1 3011055 Gasket 1

2 3010883 Power Supply 1

3 602-0440-140 Screw 4-40 x 1/4 4

4 3004653 Backing Plate 1

5 604-1132-380 1-=32 Hex Nut 1

6 528-8704-001 External Lock Washer 1

7 3008893 Ground Stud 1

8 528-8501-001 08-0501 Nut 1

9 528-8704-001 External Lock Washer 1

10 528-1450-001 Color Code Washer 1

11 528-4057-001 Brass Plug 1

12 603-0440-120 4-40 x 1/2 screw 2

13 3011210 5 x 20 MM fuse 2

14 3001201 Power Module 1

15 3010164 Line Filter Gasket 1

16 3010700 Light Pipe 1

17 3000221 Jack Screw 4

18 600-5007-400 Black Foot 4

19 3011054 Bottom Enclosure 1

20 3005960 6-32 x 1/2 screw 4

21 3010231 PCB Assembly 1

22 3010695 PCB Assembly 1

23 3011216 4M x 5M screw 4

24 3011217 4M x 20M screw 4

25 3011053 Enclusre Top 1

Not shown:

3009929 AC power harness

96406-T-148 GND wire harness

3010698 DC power harness from supply

3004546 Ethernet cable

3005101 DC power harness to SBC

3007333 Flat cable to SBC

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 5 - Disassembly / Assembly & Replacement Parts

Pedestal

ITEM PART NUMBER DESCRIPTION QTY

1 3006942 Support Arm 1

2 3013602 Post 1

3 404003227 Tray 1

4 3013104 Caster (not locking) 1

5 3013105 Caster (locking) 1

6 404002295 Telescoping Pole 1

7 3011608 Knob 1

2
7

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 MEDRAD Stellant CT Injection System

Miscellaneous Replacement Parts

Part Number Item

Manuals

201071 Operation Manual - English

201612 Operation Manual - Chinese

201614 Operation Manual -Danish

201615 Operation Manual - Dutch

201617 Operation Manual - French

201618 Operation Manual - German

201619 Operation Manual - Greek

201620 Operation Manual - Italian

201611 Operation Manual - Japanese

201621 Operation Manual - Norwegian

201623 Operation Manual - Portuguese

201624 Operation Manual - Spanish

201625 Operation Manual - Swedish

201681 Service Manual

201682 Service Schematic Manual

Language Conversion Instructions

3009261 Language Conversion - English

3009264 Language Conversion - Dutch

3009266 Language Conversion - French

3009267 Language Conversion - German

3009269 Language Conversion - Italian

3009274 Language Conversion - Spanish

3009275 Language Conversion - Swedish

3009270 Language Conversion Japanese

Heat Maintainer

3009708 Heat Maintainer FLS with Ferrite (Single Head)

3009707 Heat Maintainer PLS with Ferrite (Single Head)

3013737 Heat Maintainer Extension Cable

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 5 - Disassembly / Assembly & Replacement Parts

3007871 Heat Maintainer FLS

3007872 Heat Maintainer PFS

Syringe Adapter

3009580 Japanese 150PF Syringe Adapter Assembly

3008169 Japanese 100 PF Syringe Adapter Assembly

Cables

3007644 5 ft. Base to Display Cable

3007643 25 ft. Base to Display Cable

3008612 25 ft. Head Ext. Cable

3008613 50 ft. Head Ext. Cable

3008614 75 ft. Head Ext. Cable

3007782 100 ft. Head Ext. Cable

Power Cords

535-0127-012 International Power Cord

535-0243-012 N. America and Japan Power Cord

3013369 Chinese Power Cord

Wall Mount

401000775 Wall Mount System

750001967-2 CS Ceiling Mount System

750001967-3 CS Wall Mount System

3008277 Adjustable Height Pedestal

Hand Switch

3006265 Hand Switch

3009704 Handswitch with Ferrite (Single Head)

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