Invivo Millennia 3155MVS User manual

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Invivo Research, Incorporated
Millennia®3155MVS/3155A Monitors
Service Manual
INVIVO
RESEARCH
INCORPORATED
12601 Research Parkway
Orlando, FL 32826
1-800-331-3220
1-407-275-3220
www.invivoresearch.com

TABLE OF CONTENTS
Paragraph Number Page Number
i
List of Figures ............................................................... iii
General Service Precautions ................................................... iv
MRI Service Precautions .......................................................v
User Responsibility ......................................................... vii
1.0 THEORY OF OPERATION ............................................ 1-1
1.1 General Description .................................................... 1-1
1.1.1 System Parameters ............................................... 1-2
1.1.2 User Interface ................................................... 1-2
1.1.3 Versatility ...................................................... 1-2
1.2 Power Supply ......................................................... 1-3
1.2.1 AB69 and AB69A Location ........................................ 1-3
1.2.2 Charger Circuit .................................................. 1-3
1.2.3 Power On/Off System ............................................ 1-4
1.2.4 +5 and +3.3 Vdc Power Supplies .................................... 1-5
1.2.5 +12 and -12 Vdc Supplies ......................................... 1-6
1.2.6 Clock Generator ................................................. 1-7
1.2.7 Audio ......................................................... 1-7
1.2.8 Power Sense for POWER GOOD ................................... 1-7
1.2.9 Battery/AC Power Sense .......................................... 1-7
1.2.10 Recorder Power ................................................. 1-8
2.0 CALIBRATION AND VERIFICATION .................................. 2-1
2.0.1 Required Test Equipment. ......................................... 2-1
2.0.2 Agents Test Equipment. ........................................... 2-1
2.1 Turning the Monitor On ................................................. 2-1
2.2 Front Panel Control Verification .......................................... 2-2
2.2.1 Rotary Knob Verification .......................................... 2-2
2.2.2 Control Key Verification .......................................... 2-3
2.3 System Cold Start Procedure ............................................. 2-5
2.4 Sound System Verification and Adjustment ................................. 2-5
2.5 Time Set Verification ................................................... 2-6
2.6 Store and Recall Setups ................................................. 2-7
2.6.1 Cold Start Verification ............................................ 2-8
2.7 Remote Communication System Verification ................................ 2-8
2.7.1 Remote Parameter Verification ..................................... 2-9
2.8 Recorder Verification ................................................... 2-9
2.9 Agents Verification (Millennia®3155A Only) ............................... 2-10
3.0 ASSEMBLY/DISASSEMBLY PROCEDURES ............................ 3-1
3.0.1 Required Tools. ................................................. 3-1
3.1 Monitor Disassembly/Reassembly ......................................... 3-1
3.2 AB69 and AB69A Removal/Replacement .................................. 3-1
3.3 EMI Gasket Removal/Replacement ........................................ 3-2
3.4 Battery Removal/Replacement ............................................ 3-2
3.5 DC Fuse Removal/Replacement .......................................... 3-3
3.6 AS153/AS153J Removal/Replacement ..................................... 3-3
3.6.1 AC Fuse Removal/Replacement .................................... 3-3
3.7 Anesthetic Oxygen Sensor Removal/Replacement (Millennia®3155A Only) ....... 3-3
3.8 HE61 Radio Antenna Removal/Replacement ................................ 3-4

TABLE OF CONTENTS
Paragraph Number Page Number
ii
4.0 ADJUSTMENT PROCEDURES ........................................ 4-1
4.1 Introduction. .......................................................... 4-1
4.2 Setup ............................................................... 4-1
4.3 Power Supply Calibration ............................................... 4-2
4.4 Agents Adjustment Procedure (Millennia®3155A Only). ....................... 4-4
4.5 Clock Adjustment Procedure. ............................................ 4-6
5.0 PROGRAMMING INSTRUCTIONS .................................... 5-1
5.1 Introduction .......................................................... 5-1
5.2 Required Test Equipment ................................................ 5-1
5.3 Com24 Setup ......................................................... 5-1
5.4 Monitor Setup ........................................................ 5-2
5.5 HE60 Programming for Single 3155 Communications ......................... 5-3
5.6 HE60 Programming for 3150/AS163 Communications ........................ 5-5
5.7 AB182B Programming for Dual 3155 Communications ........................ 5-7
6.0 TROUBLESHOOTING FLOW CHARTS ................................ 6-1
Appendix A: List of Symbols ................................................ A-1
Appendix B: Repair .........................................................B-1
Appendix C: Warranty ......................................................C-1
Appendix D: Electromechanical Specifications ................................. D-1

LIST OF FIGURES
Figure Number Page Number
iii
1-1. Sample 3155A Telecommunications Link Label .............................. 1-2
2-1. The Millennia®3155MVS/3155A Monitor Front Panel ........................ 2-3
4-1. Power Supply Test Setup ................................................ 4-2
4-2. TF0088 Assembly Instructions ........................................... 4-4
B-1. Sample Monitor ID Label ...............................................B-1
B-2. Sample Assembly/Subassembly Label ......................................B-2

iv
GENERAL SERVICE PRECAUTIONS
Obtain a thorough understanding of each of the following precautions before attempting to perform
any disassembly or service procedure. Damage to the instrument or injury to yourself may result if
these precautions, as well as common sense, are not used.
Service to this product should be performed at the recommended intervals only by trained, qualified
service personnel familiar with the operation and service documentation for this monitor.
Shock Hazard exists when this monitor is operated without the chassis cover. Use caution when
working on units with power applied.
Always disconnect monitor from AC Main Power before performing service on internal assemblies.
Due to the monitor's internal battery, power may be present even when disconnected from the AC
Main Power. When necessary, disconnect the internal battery prior to performing service.
For continued protection against fire hazard, replace fuses with same type and rating only.
Always follow proper electrostatic discharge (ESD) procedures during component and assembly
handling to prevent static discharge damage to sensitive parts.
Use only replacement parts specified in this manual; ensure that defective or worn parts are properly
disposed of in accordance with local regulations.
When cleaning the unit, do not permit liquid to enter the case. When cleaning, use proper materials
and ensure total dryness before powering the monitor. Use care that cleaning fluids do not attack
plastic or painted surfaces (e.g., avoid ammonia, phenol or acetone based cleaners that may damage
the monitor surface). Use care that wiping rags do not abrade the surfaces.
Assembly hardware has been secured with a thread locking agent. After several assembly/
disassembly cycles new locking agent will be required. (Use Loctite 42540 or similar type for use
near PVC or acrylic plastics.)
In general, handle all Printed Circuit Boards by their edges. Oils, sweat,dirt, etc. can induce leakage
paths in high impedance circuits which impede their operation. Such contamination will also
promote corrosion of circuits yielding a long term reliability problem.
Avoid rough handling of all exposed chassis parts and front panel overlay. These parts can be
scratched causing obtrusive cosmetic defects.

v
NOTE
In addition to these precautions, cautions and warnings are
located in paragraphs 3.1 (Page 3-1), 4.0(Page 4-1), Section
6 (Pages 6-1 through 6-10) and Appendix B (Page B-2).
CAUTION
Federal law in the USA and Canada restricts this device to sale by, or on the
order of, a licensed medical practitioner.
NOTE
Use only Invivo Research Fiber Optic Sensors with this monitor.
MRI SERVICE PRECAUTIONS
This monitor is not intended for use in the presence of FLAMMABLE ANESTHETICS. An
explosion hazard exists.
Never immerse the monitor in any fluid or attempt to clean it with liquid cleaning agents. An
electrical hazard exists.
Do not remove the monitor's cover. A shock hazard exists.Refer servicing to qualified personnel
only.No repair should be undertaken or attempted by anyone not having a thorough understanding
of the repair and safety assurance of patient monitors.
Risk of RF current burn. Cableswhich become inadvertently looped during MRI act as conductive
lines for RF induced currents. When lead wires or other cables form conductive loop in contact with
the patient's tissue, minor to severe burning can result.
Perform the following to minimize risk of RF current burn:
1. Place cables and lead wires neatly in straight alignment with no looping.
2. Keep the length of lead wires and patient cable within the bore to a minimum.
3. RF burn risk increases when multiple sensors/cables are in use. Such combinations
are not recommended.
4. The high radio frequency (RF) power used in MR scanning poses an ever-present risk
of excessive heat at the monitoring sites and, therefore, the risk of RF current burn.
Should power levels greater than S.A.R. of 4 w/kg peak (0.4 w/kg average) be
used, the risk of patient burn greatly increases. As a result, monitoring of ECG
or Respiration (derived from ECG leads) at power levels of greater than 4 w/kg peak
(0.4 w/kg average) is not recommended for the general patient population. Such
monitoring should only be attempted on conscious patients with good temperature
reflex so they may warn the operator of excessive heat at the monitoring sites.
5. High RF Power may cause patient heating or burns. For scans with average
S.A.R. > 1 w/kg, limit scan time to 5 minutes and pause at least 3 minutes
between scans to allow ECG Cable to cool.

vi
MRI Compatibility
The QuadtrodeTM MRI ECG Electrode Pad, and ECG Patient Lead Wires and Cable,
are compatible with Magnetic Resonance Imaging (MRI) Systems within the following
guidelines:
!MRI Systems with static magnetic field strengths up to 1.5 Tesla.
!Usable within the MRI system bore with Specific Absorption Ratios (S.A.R.'s)
up to 4.0 w/kg (peak). Use with higher S.A.R.'s greatly increases the risk of
patient burns.
!Non-magnetic materials are used in the construction of these assemblies.
!If scanned directly across the plane of the ECG electrode element, aslightimage
distortion may be seen at the skin surface where the electrode element is
positioned.