Mortara Instrument ELI 100 User manual

REF 9507-008-50 REV E1
ELI 100 Service Manual
CAUTION: Federal law restricts this device to sale by or on the order of a physician.

®
Copyright© 1996-2006
by Mortara Instrument, Inc.
7865 N. 86th Street
Milwaukee, Wisconsin 53224
This document contains confidential information that belongs to Mortara Instrument, Inc. No part of this document may be
transmitted, reproduced, used, or disclosed outside of the receiving organization without the express written consent of Mortara
Instrument, Inc. Mortara is a registered trademark of Mortara Instrument, Inc. ELI 100 is a trademark of Mortara Instrument,
Inc.

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Table of Contents
1 General
Service Manual Purpose ......................................................................................................1-1
User Safety Information ........................................................................................................1-1
Periodic Safety Inspections .....................................................................................1-1
Proper Power Cord ..................................................................................................1-1
Proper Fuse .............................................................................................................1-1
Do Not Operate in Explosive Atmospheres .............................................................1-1
Use Only Safe Methods of Interconnection .............................................................1-1
Do Not Mount Product above Patient ......................................................................1-1
Recommended Accessories ....................................................................................1-1
Sterilizing this Product .............................................................................................1-2
Liquid Spills .............................................................................................................1-2
System Information Log ...........................................................................................1-2
Product Information .................................................................................................1-2
Equipment Symbols ..............................................................................................................1-2
Symbol Delineation ..................................................................................................1-2
2 Maintenance and Cleaning
Introduction (Maintenance and Cleaning) .............................................................................2-1
Recommended Cleaning Supplies .......................................................................................2-1
List of Repair Materials .........................................................................................................2-1
Cleaning and Inspection Techniques ...................................................................................2-2
Interior Cleaning ...................................................................................................................2-2
Magnetic Cleaning ................................................................................................................2-2
Printed Circuit Board Cleaning .............................................................................................2-2
Metallic and Plastic Parts Cleaning ......................................................................................2-3
Exterior Cleaning ..................................................................................................................2-3
Printhead Cleaning ...............................................................................................................2-3
Inspection of Writer Assembly Harness ...............................................................................2-3
Printhead Adjustment ...........................................................................................................2-3
Exterior Inspection ................................................................................................................2-4
Interior Visual Inspection ......................................................................................................2-4
Preventive Maintenance Schedule .......................................................................................2-4
Cover Assembly Removal / Installation ................................................................................2-5
Writer Removal / Installation .................................................................................................2-5
Printhead Removal / Installation ...........................................................................................2-5
Paper Drive Motor Removal / Installation .............................................................................2-6
Printed Circuit Board Assembly Removal / Installation ........................................................2-6
Keyboard Removal / Installation ...........................................................................................2-6
LCD Removal / Installation ...................................................................................................2-7
Batteries Removal / Installation ............................................................................................2-7

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3 Technical Description
Introduction (Technical) ........................................................................................................3-1
Processor Module (MPM) .....................................................................................................3-1
Modem Module (MMM) ........................................................................................................3-1
Main System Board ..............................................................................................................3-2
RS-232 Level Serial Port / High Speed Serial Port .................................................3-2
Writer Interface ........................................................................................................3-2
Writer Motor Control.................................................................................................3-2
Printhead Signal and Power Interface .....................................................................3-3
Keyboard Interface ..................................................................................................3-3
LCD Interface ..........................................................................................................3-3
Patient Input .............................................................................................................3-4
Speaker Interface ....................................................................................................3-4
Power Management Circuit .....................................................................................3-4
Power Supply ........................................................................................................................3-5
AC Input Power .......................................................................................................3-5
Battery Connections ................................................................................................3-5
Battery Charger and Printhead Supply ....................................................................3-5
5V Logic Supply .......................................................................................................3-5
5V Back-up Supply ..................................................................................................3-6
12V Programming Supply ........................................................................................3-6
Block Diagram ......................................................................................................................3-7
Keyboard Matrix ....................................................................................................................3-8
Battery Charging ...................................................................................................................3-8
Interconnection Diagram ......................................................................................................3-9
Interconnection List ..............................................................................................................3-10
RS-232 / High-Speed Serial Data Port ....................................................................3-10
AC Power Input .......................................................................................................3-10
Battery Input ............................................................................................................3-10
Writer Motor .............................................................................................................3-10
Writer Control / Power .............................................................................................3-11
Patient Input .............................................................................................................3-11
LCD Display Interface ..............................................................................................3-12
Spare Slot ................................................................................................................3-12
MPM Board Slot ......................................................................................................3-12
Keyboard Interface ..................................................................................................3-12
Engineering Debugger Interface .............................................................................3-13
4 Final Assembly
Parts List #1 - Final Assembly ................................................................................................4-1
Modem Card Optional Assembly Procedure ..........................................................................4-3
Modem Options ......................................................................................................................4-4
Final Assembly Notes ............................................................................................................4-5

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5 Base Assembly
Parts List #2 - Base Assembly ..............................................................................................5-1
Base Assembly Notes ..........................................................................................................5-3
6 4” Writer Assembly
Parts List #3 - Writer .............................................................................................................6-1
Writer Assembly Notes..........................................................................................................6-3
7 Printed Circuit Boards
Introduction to Printed Circuit boards....................................................................................7-1
Motherboard Ref: 26025-002-50 .............................................................................7-2
Motherboard Board Assembly Notes ......................................................................7-5
Motherboard Schematic Sheet 1 .............................................................................7-6
Motherboard Schematic Sheet 2 .............................................................................7-7
Motherboard Schematic Sheet 3 .............................................................................7-8
Motherboard Schematic Sheet 4 .............................................................................7-9
Motherboard Schematic Sheet 5 .............................................................................7-10
Processing Module (MPM) Board Ref: 26025-005-50.............................................7-11
Processing Module Assembly Notes Ref: 26025-005-50.........................................7-12
Processing Module (MPM) Board Ref: 26025-005-51.............................................7-14
Processing Module Assembly Notes Ref: 26025-005-51.........................................7-15
8 Testing and Troubleshooting
Equipment Required .............................................................................................................8-1
Introduction to Testing and Troubleshooting ........................................................................8-1
Fault Isolation Table .............................................................................................................8-1
Fault Isolation Table continued .............................................................................................8-2
Diagnosis ..............................................................................................................................8-2
1.0 AC On - Blank LCD, No Pixels Illuminated ........................................................8-2
2.0 AC On - Bar Across Top of LCD or Faint Illumination of Pixels ........................8-3
3.0 DC On - "Battery Low" Message Appears on Display .......................................8-3
4.0 DC On - No Response When DC 'ON' Key is Pressed .....................................8-3
5.0 Writer Test - Printing too Light or Too Dark or Uneven .....................................8-3
6.0 Writer Test - Gaps in Printing, Missing Dots, or No Printing at All ....................8-4
7.0 Writer Test - No Motor Drive .............................................................................8-4
8.0 Modem Test - No Dial-Tone or Touch-Tone Audio ...........................................8-5
Performance Testing ............................................................................................................8-5
Introduction to Performance Testing .......................................................................8-5
Equipment Required ................................................................................................8-5
Test Equipment Set-Up ...........................................................................................8-6
Initial Set-Up ............................................................................................................8-6
Noise Test ...............................................................................................................8-7
ECG, Keyboard and Cable Test ..............................................................................8-8
Rhythm Test ............................................................................................................8-8
Lead Fail Test ..........................................................................................................8-9
Directory Test ..........................................................................................................8-9
Transmit/Receive Test .............................................................................................8-10

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Direct Receive .........................................................................................................8-10
Modem Transmission ..............................................................................................8-11
Modem Receive .......................................................................................................8-11
Writer Self Test ........................................................................................................8-12
Description of Leakage Tests ..................................................................................8-12
Leakage Tests .........................................................................................................8-12
Earth Leakage Current Measurement .....................................................................8-12
Chassis Leakage Current Measurement .................................................................8-14
Patient Leakage Current Measurement ..................................................................8-15
Line Voltage Applied to Patient Connection Leakage Current Measurement .........8-16
Ground Integrity Test ...............................................................................................8-16
Appendix A Testing and Troubleshooting
Traces ...................................................................................................................................A-1
Appendix B Modem Module(s) (MMM)
Introduction to Modem Module(s) (MMM) ............................................................................B-1
Modem Module (MMM) 2 MRAM PCB Ref: 26025-003-50...................................................B-2
Modem Module (MMM) 2 MRAM PCB Ref: 26025-003-50 Assembly Notes .......................B-3
Modem Module (MMM) 16 MRAM PCB Ref: 26025-003-51.................................................B-6
Modem Module (MMM) 16 MRAM PCB Ref: 26025-003-51 Modification Notes..................B-7
Appendix C Mortara Receiver Module(s) (MRM)
Introduction to Mortara Receiver Module(s) (MRM) .............................................................C-1
Mortara Receiver Module (MRM-915) PCB Ref: 26125-001-50...........................................C-1
Mortara Receiver Module (MRM-915) PCB Ref: 26125-001-50 Assembly Notes................C-2
Mortara Receiver Module (MRM-2500) PCB Ref: 26125-002-50.........................................C-4
Mortara Receiver Module (MRM-2500) PCB Ref: 26125-002-50 Modification Notes ..........C-6
Index.............................................................................................................................................I-1
Figures
Table 1 - Preventative Maintenance Schedule ...........................................................................2-4
Block Diagram - AC Power .........................................................................................................3-7
Keyboard Matrix ..........................................................................................................................3-8
Interconnection Diagram 1 ..........................................................................................................3-9
4-a Completed Final Assembly ...................................................................................................4-2
4-b Assembling Modem Card ......................................................................................................4-3
4-c Modem Installation ................................................................................................................4-4
4-d Label Placement on Writer ...................................................................................................4-5
4-e Serial Number and Part Number Label Placement on Bottom of Unit .................................4-6
4-f Label Placement on Unit ........................................................................................................4-7
4-g Label Chart ...........................................................................................................................4-7
4-h Ground Label Placement on Unit ..........................................................................................4-8
4-i Cover on Base Installation .....................................................................................................4-9
4-j Writer Door Installation ...........................................................................................................4-10
4-k Writer Installation ..................................................................................................................4-11
4-l LCD and Keyboard Installation ..............................................................................................4-12

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4-m Tape Placement ...................................................................................................................4-13
5-a Complete Base Assembly .....................................................................................................5-2
5-b Installing Tie Downs ..............................................................................................................5-3
5-c Labeling and Assembly of Batteries ......................................................................................5-4
5-d Installing Printed Circuit Board .............................................................................................5-5
6-a Complete Writer Assembly ...................................................................................................6-2
6-b Addition of Date Code Label and Bench testing ...................................................................6-3
6-c Installing Printhead and Copper Braid Cable ........................................................................6-4
6-d Installing E-Rings to Cover ...................................................................................................6-5
6-e Installing Main Pivot Shaft ....................................................................................................6-6
6-f Installation of Spring Bar ........................................................................................................6-7
6-g Installing Slider Plate ...........................................................................................................6-8
6-h Installing Alignment Deflector Shaft ......................................................................................6-9
6-i Installing Floating Cover and Grounding Gaskets .................................................................6-10
6-j Detail of Spring .......................................................................................................................6-11
6-k Installing Latch and Springs ..................................................................................................6-12
6-l Installing Slide Shaft, Bearing and Spring .............................................................................6-13
6-m Lower Chassis Complete .....................................................................................................6-14
6-n Completion of Lower Chassis ...............................................................................................6-15
6-o View of Bottom of Paper Trough ...........................................................................................6-16
6-p Installation of 48 Tooth Gear ................................................................................................6-17
6-q Installation of Platen and Gears ............................................................................................6-18
6-r Installation of Motor and Sound Dampeners..........................................................................6-19
7-a Motherboard ..........................................................................................................................7-2
7-b Motherboard 'X-Y' Coordinates .............................................................................................7-3
7-c Installation Details .................................................................................................................7-4
7-d Modification Detail .................................................................................................................7-4
7-e Sheet 1 of Motherboard Schematics ....................................................................................7-6
7-f Sheet 2 of Motherboard Schematics .....................................................................................7-7
7-g Sheet 3 of Motherboard Schematics ....................................................................................7-8
7-h Sheet 4 of Motherboard Schematics ....................................................................................7-9
7-i Sheet 5 of Motherboard Schematics ......................................................................................7-10
7-j Processing Module (MPM) Printed Circuit Board Ref: 26025-005-50....................................7-11
7-k Processing Module Card (MPM) 'X' & 'Y' Coordinates Ref: 26025-005-50 and -51..............7-13
7-l Processing Module (MPM) Printed Circuit Board Ref: 26025-005-51....................................7-14
7-m Sheet 1 of 3 Schematics for MPM Printed Circuit Board Ref: 26025-005-50 and -51.........7-16
7-n Sheet 2 of 3 Schematics for MPM Printed Circuit Board Ref: 26025-005-50 and -51..........7-17
7-o Sheet 3 of 3 Schematics for MPM Printed Circuit Board Ref: 26025-005-50 and -51..........7-18
Table 2 - Default Parameters ......................................................................................................8-6
Table 3 - Lead Fail Test ..............................................................................................................8-9
8-a Measuring Device Forms ......................................................................................................8-13
8-b Chassis Leakage ..................................................................................................................8-14
8-c Patient Sink Current ..............................................................................................................8-15
8-d Patient Source Current ..........................................................................................................8-16
A-a Trace 1 - Noise / Drift Test ...................................................................................................A-1
A-b Trace 2 - 12-Lead Auto ECG ................................................................................................A-2
A-c Trace 3 - Rhythm Strips ........................................................................................................A-3
A-d Trace 4 - Directory ................................................................................................................A-4
A-e Trace 5 - Writer Self Test .....................................................................................................A-5
B-a Modem Module (MMM) 2 MRAM Printed Circuit Board Assembly Ref: 26025-003-50........B-2
B-b Views and Details for Mounting Crystal.................................................................................B-3
B-c Modem Module (MMM) 2 MRAM Board 'X' & 'Y' Coordinates Ref: 26025-003-50...............B-4
B-d Modem Module (MMM) 2 MRAM Schematic Ref: 26025-003-50.........................................B-5
B-e Modem Module (MMM) 16 MRAM Printed Circuit Board Assembly Ref: 26025-003-51......B-6
B-f Installation of C27 and D100..................................................................................................B-7
B-g Installation of R8 and C101...................................................................................................B-7

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B-h Installation of R102................................................................................................................B-8
B-i Installation of R101.................................................................................................................B-8
B-j Installation of CR2 ..................................................................................................................B-9
B-k Modem Module (MMM) 16 MRAM Schematic Ref: 26025-003-51.......................................B-10
C-a Mortara Receiver Module (MRM-915) PCB Assembly Complete Ref: 26125-001-50..........C-1
C-b Shield Can Installation Holes................................................................................................C-2
C-c Installation of Shield Can.......................................................................................................C-2
C-d Installation of Connectors......................................................................................................C-3
C-e Mortara Receiver Module (MRM-2500) PCB Assembly Complete Ref: 26125-002-50........C-4
C-f Installation of Connectors.......................................................................................................C-5
C-g Installation of MDC-2500 Assembled Printed Circuit Board .................................................C-6